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make upstream driver pluginable

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This commit is contained in:
Boshi Lian 2018-02-19 08:41:42 +08:00
parent 6d2f5aa8d0
commit e541eb6298
125 changed files with 10196 additions and 8230 deletions
Download patch file Download diff file Expand all files Collapse all files

20
Gopkg.lock generated
View file

@ -2,22 +2,10 @@
[[projects]]
branch = "master"
name = "github.com/glacjay/goini"
name = "github.com/jessevdk/go-flags"
packages = ["."]
revision = "fd3024d87ee21a36d3ccc4367f509fec89cd90ee"
[[projects]]
branch = "master"
name = "github.com/rakyll/globalconf"
packages = ["."]
revision = "7afbf15d8da4ed30174874a9db565d16755e99f7"
[[projects]]
branch = "master"
name = "github.com/spf13/pflag"
packages = ["."]
revision = "e57e3eeb33f795204c1ca35f56c44f83227c6e66"
revision = "96dc06278ce32a0e9d957d590bb987c81ee66407"
version = "v1.3.0"
[[projects]]
branch = "master"
@ -43,6 +31,6 @@
[solve-meta]
analyzer-name = "dep"
analyzer-version = 1
inputs-digest = "a45bf0b707bd655f13d5cd1ac7586dbc57f2eaee25ffc08bf9c3746189c686f3"
inputs-digest = "26b0711bf90deb21e94cf1291217773961e726ad2d2982d32cfb34b3ffbef73e"
solver-name = "gps-cdcl"
solver-version = 1

8
Gopkg.toml
View file

@ -21,14 +21,6 @@
# version = "2.4.0"
[[constraint]]
branch = "master"
name = "github.com/rakyll/globalconf"
[[constraint]]
branch = "master"
name = "github.com/spf13/pflag"
[[constraint]]
branch = "master"
name = "github.com/vvanpo/golang-pam"

0
sshpiperd/audit.go → sshpiperd/auditor/audit.go
View file

3
sshpiperd/challenger/challenger.go
View file

@ -2,8 +2,9 @@ package challenger
import (
"fmt"
"golang.org/x/crypto/ssh"
"sort"
"golang.org/x/crypto/ssh"
)
type Challenger func(conn ssh.ConnMetadata, client ssh.KeyboardInteractiveChallenge) (bool, error)

2
sshpiperd/challenger/pam_challenger.go
View file

@ -4,8 +4,8 @@ package challenger
import (
"fmt"
"golang.org/x/crypto/ssh"
pam "github.com/vvanpo/golang-pam"
"golang.org/x/crypto/ssh"
"os"
)

99
sshpiperd/cmd.go Normal file
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@ -0,0 +1,99 @@
package main
import (
// "fmt"
"os"
"github.com/jessevdk/go-flags"
"github.com/tg123/sshpiper/sshpiperd/upstream"
_ "github.com/tg123/sshpiper/sshpiperd/upstream/loader"
)
type subCommand struct{ callback func(args []string) error }
func (s *subCommand) Execute(args []string) error {
return s.callback(args)
}
func addSubCommand(parser *flags.Parser, name, desc string, callback func(args []string) error) {
_, err := parser.AddCommand(name, desc, "", &subCommand{callback})
if err != nil {
panic(err)
}
}
func addOpt(parser *flags.Parser, name string, data interface{}) {
_, err := parser.AddGroup(name, "", data)
if err != nil {
panic(err)
}
}
func main() {
parser := flags.NewNamedParser("sshpiperd", flags.Default)
parser.SubcommandsOptional = true
// version
addSubCommand(parser, "version", "show version", func(args []string) error {
showVersion()
return nil
})
dumpConfig := func(){
ini := flags.NewIniParser(parser)
ini.Write(os.Stdout, flags.IniIncludeDefaults)
}
// dumpini
addSubCommand(parser, "dumpconfig", "dump current config ini to stdout", func(args []string) error {
return nil
})
config := &piperdConfig{}
addOpt(parser, "sshpiperd", config)
// registry upstream
//upstreamOpt := make(map[string]interface{})
for _, n := range upstream.All() {
u := upstream.Get(n)
opt := u.GetOpts()
if opt == nil {
continue
}
_, err := parser.AddGroup("upstream."+u.GetName(), "", opt)
if err != nil {
panic(err)
}
//upstreamOpt[u.GetName()] = opt
}
if _, err := parser.Parse(); err != nil {
return
}
// TODO
// load from ini
//ini := flags.NewIniParser(parser)
//err = ini.ParseFile(globalConfig.Config)
//fmt.Println(err)
// start to serve
if parser.Active == nil {
showVersion()
dumpConfig()
startPiper(config)
}
}

159
sshpiperd/config.go
View file

@ -1,159 +0,0 @@
// Copyright 2014, 2015 tgic<farmer1992@gmail.com>. All rights reserved.
// this file is governed by MIT-license
//
// https://github.com/tg123/sshpiper
package main
import (
"flag"
"fmt"
"log"
"os"
"runtime"
"strings"
"text/template"
"github.com/rakyll/globalconf"
"github.com/spf13/pflag"
)
var version = "DEV"
var githash = "0000000000"
var (
config = struct {
ListenAddr string
Port uint
WorkingDir string
PiperKeyFile string
ShowHelp bool
Challenger string
Logfile string
ShowVersion bool
AllowBadUsername bool
NoCheckPerm bool
RecordTypescript bool
}{}
out = os.Stdout
configTemplate *template.Template
versionTemplate *template.Template
)
func initTemplate() {
configTemplate = template.Must(template.New("config").Parse(`
Listening : {{.ListenAddr}}:{{.Port}}
Server Key File : {{.PiperKeyFile}}
Working Dir : {{.WorkingDir}}
Additional Challenger : {{.Challenger}}
Logging file : {{.Logfile}}
`[1:]))
versionTemplate = template.Must(template.New("ver").Parse(`
SSHPiper ver: {{.VER}} by Boshi Lian<farmer1992@gmail.com>
https://github.com/tg123/sshpiper
go runtime : {{.GOVER}}
git hash : {{.GITHASH}}
`[1:]))
}
func initLogger() {
// change this value for display might be not a good idea
if config.Logfile != "" {
f, err := os.OpenFile(config.Logfile, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0644)
if err != nil {
logger.Printf("cannot open log file %v", err)
config.Logfile = fmt.Sprintf("stdout, fall back from %v", config.Logfile)
return
}
logger = log.New(f, "", logger.Flags())
} else {
config.Logfile = "stdout"
}
}
func initConfig() {
configfile := pflag.String("config", "/etc/sshpiperd.conf", "Config file path. Note: any option will be overwrite if it is set by commandline")
pflag.StringVarP(&config.ListenAddr, "listen_addr", "l", "0.0.0.0", "Listening Address")
pflag.UintVarP(&config.Port, "port", "p", 2222, "Listening Port")
pflag.StringVarP(&config.WorkingDir, "working_dir", "w", "/var/sshpiper", "Working Dir")
pflag.StringVarP(&config.PiperKeyFile, "server_key", "i", "/etc/ssh/ssh_host_rsa_key", "Key file for SSH Piper")
pflag.StringVarP(&config.Challenger, "challenger", "c", "", "Additional challenger name, e.g. pam, empty for no additional challenge")
pflag.StringVar(&config.Logfile, "log", "", "Logfile path. Leave empty or any error occurs will fall back to stdout")
pflag.BoolVar(&config.AllowBadUsername, "allow_bad_username", false, "Disable username check while search the working dir")
pflag.BoolVar(&config.NoCheckPerm, "no_check_perm", false, "Disable 0400 checking when using files in the working dir")
pflag.BoolVar(&config.RecordTypescript, "record_typescript", false, "record screen output into the working dir with typescript format")
pflag.BoolVarP(&config.ShowHelp, "help", "h", false, "Print help and exit")
pflag.BoolVar(&config.ShowVersion, "version", false, "Print version and exit")
pflag.Parse()
if _, err := os.Stat(*configfile); os.IsNotExist(err) {
if !pflag.Lookup("config").Changed {
*configfile = ""
} else {
logger.Fatalf("config file %v not found", *configfile)
}
}
gconf, err := globalconf.NewWithOptions(&globalconf.Options{
Filename: *configfile,
EnvPrefix: "SSHPIPERD_",
})
if err != nil { // this error will happen only if file error
logger.Fatalln("load config file error %v: %v", *configfile, err)
}
// build a dummy flag set for globalconf to parse
fs := flag.NewFlagSet("", flag.ContinueOnError)
ignoreSet := make(map[string]bool)
pflag.Visit(func(f *pflag.Flag) {
ignoreSet[f.Name] = true
})
// should be ignored
ignoreSet["help"] = true
ignoreSet["version"] = true
pflag.VisitAll(func(f *pflag.Flag) {
n := f.Name
if !ignoreSet[n] {
n = strings.TrimPrefix(n, "-")
fs.Var(f.Value, n, f.Usage)
}
})
gconf.ParseSet("", fs)
}
func showHelp() {
pflag.Usage()
}
func showVersion() {
versionTemplate.Execute(out, struct {
VER string
GOVER string
GITHASH string
}{
VER: version,
GITHASH: githash,
GOVER: runtime.Version(),
})
}
func showConfig() {
configTemplate.Execute(out, config)
}

23
sshpiperd/log.go Normal file
View file

@ -0,0 +1,23 @@
package main
import (
"log"
"os"
)
var (
logger = log.New(os.Stdout, "", log.Ldate|log.Ltime)
)
func initLogger(file string) {
// change this value for display might be not a good idea
if file != "" {
f, err := os.OpenFile(file, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0644)
if err != nil {
logger.Printf("cannot open log file %v", err)
return
}
logger = log.New(f, "", logger.Flags())
}
}

13
sshpiperd/registry/plugin.go Normal file
View file

@ -0,0 +1,13 @@
package registry
import (
"log"
)
type Plugin interface {
GetName() string
GetOpts() interface{}
Init(logger *log.Logger) error
}

46
sshpiperd/registry/registry.go Normal file
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@ -0,0 +1,46 @@
package registry
import (
"sort"
"sync"
)
type Registry struct {
driversMu sync.RWMutex
drivers map[string]interface{}
}
func NewRegistry() *Registry {
return &Registry{drivers: make(map[string]interface{})}
}
// copy from database/sql
func (r *Registry) Register(name string, driver interface{}) {
r.driversMu.Lock()
defer r.driversMu.Unlock()
if driver == nil {
panic("Register driver is nil")
}
if _, dup := r.drivers[name]; dup {
panic("Register called twice for driver " + name)
}
r.drivers[name] = driver
}
func (r *Registry) Drivers() []string {
r.driversMu.RLock()
defer r.driversMu.RUnlock()
var list []string
for name := range r.drivers {
list = append(list, name)
}
sort.Strings(list)
return list
}
func (r *Registry) Get(name string) interface{} {
r.driversMu.RLock()
defer r.driversMu.RUnlock()
return r.drivers[name]
}

76
sshpiperd/sshpiperd.go
View file

@ -1,58 +1,54 @@
// Copyright 2014, 2015 tgic<farmer1992@gmail.com>. All rights reserved.
// this file is governed by MIT-license
//
// https://github.com/tg123/sshpiper
package main
import (
"fmt"
"io/ioutil"
"log"
"net"
"os"
"golang.org/x/crypto/ssh"
"github.com/tg123/sshpiper/sshpiperd/challenger"
"golang.org/x/crypto/ssh"
"github.com/tg123/sshpiper/sshpiperd/upstream"
)
var (
logger = log.New(os.Stdout, "", log.Ldate|log.Ltime)
)
type piperdConfig struct {
Config string `long:"config" description:"Config file path. Higher priority than arg options and environment variables" default:"/etc/sshpiperd.ini" no-ini:"true"`
func showHelpOrVersion() {
if config.ShowHelp {
showHelp()
os.Exit(0)
}
ListenAddr string `short:"l" long:"listen" description:"Listening Address" default:"0.0.0.0" env:"SSHPIPERD_LISTENADDR" ini-name:"listen-address"`
Port uint `short:"p" long:"port" description:"Listening Port" default:"2222" env:"SSHPIPERD_PORT" ini-name:"listen-port"`
PiperKeyFile string `short:"i" long:"server-key" description:"Server key file for SSH Piper" default:"/etc/ssh/ssh_host_rsa_key" env:"SSHPIPERD_SERVER_KEY" ini-name:"server-key"`
Logfile string `long:"log" description:"Logfile path. Leave empty or any error occurs will fall back to stdout" env:"SSHPIPERD_LOG_PATH" ini-name:"log-path"`
if config.ShowVersion {
os.Exit(0)
}
UpstreamDriver string `short:"d" long:"upstream-driver" description:"Upstream provider driver" default:"workingdir" env:"SSHPIPERD_UPSTREAM_DRIVER"`
ChallengerDriver string `short:"c" long:"challenger-driver" description:"Additional challenger name, e.g. pam, empty for no additional challenge" env:"SSHPIPERD_CHALLENGER"`
}
func main() {
initConfig()
initTemplate()
initLogger()
func startPiper(config *piperdConfig) {
showVersion()
showHelpOrVersion()
// init log
initLogger(config.Logfile)
showConfig()
logger.Println("sshpiper is about to start")
// init upstream
upstream := upstream.Get(config.UpstreamDriver)
if upstream == nil {
logger.Fatal("upstream driver %v not found", config.UpstreamDriver)
}
upstream.Init(logger)
// TODO make this pluggable
piper := &ssh.SSHPiperConfig{
FindUpstream: findUpstreamFromUserfile,
FindUpstream: upstream.GetFindUpstreamHandle(),
}
if config.Challenger != "" {
ac, err := challenger.GetChallenger(config.Challenger)
// TODO move to plugin
if config.ChallengerDriver != "" {
ac, err := challenger.GetChallenger(config.ChallengerDriver)
if err != nil {
logger.Fatalln("failed to load challenger", err)
}
logger.Printf("using additional challenger %s", config.Challenger)
logger.Printf("using additional challenger %s", config.ChallengerDriver)
piper.AdditionalChallenge = ac
}
@ -92,18 +88,18 @@ func main() {
return
}
if config.RecordTypescript {
auditor, err := newFilePtyLogger(p.DownstreamConnMeta().User())
//if config.RecordTypescript {
// auditor, err := newFilePtyLogger(p.DownstreamConnMeta().User())
if err != nil {
logger.Printf("connection from %v failed to create auditor reason: %v", c.RemoteAddr(), err)
return
}
// if err != nil {
// logger.Printf("connection from %v failed to create auditor reason: %v", c.RemoteAddr(), err)
// return
// }
defer auditor.Close()
// defer auditor.Close()
p.HookUpstreamMsg = auditor.loggingTty
}
// p.HookUpstreamMsg = auditor.loggingTty
//}
err = p.Wait()
logger.Printf("connection from %v closed reason: %v", c.RemoteAddr(), err)

5
sshpiperd/upstream/loader/load.go Normal file
View file

@ -0,0 +1,5 @@
package loader
import (
_ "github.com/tg123/sshpiper/sshpiperd/upstream/workingdir"
)

33
sshpiperd/upstream/provider.go Normal file
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@ -0,0 +1,33 @@
package upstream
import (
"net"
"golang.org/x/crypto/ssh"
"github.com/tg123/sshpiper/sshpiperd/registry"
)
type UpstreamHandler func(conn ssh.ConnMetadata) (net.Conn, *ssh.SSHPiperAuthPipe, error)
type UpstreamProvider interface {
registry.Plugin
GetFindUpstreamHandle() UpstreamHandler
}
var (
drivers = registry.NewRegistry()
)
func Register(name string, driver UpstreamProvider) {
drivers.Register(name, driver)
}
func All() []string {
return drivers.Drivers()
}
func Get(name string) UpstreamProvider {
return drivers.Get(name).(UpstreamProvider)
}

9
sshpiperd/upstream/workingdir/config.go Normal file
View file

@ -0,0 +1,9 @@
package workingdir
var (
config = struct {
WorkingDir string `long:"workingdir" default:"/var/sshpiper" description:"Path to workingdir" env:"SSHPIPERD_WORKINGDIR" ini-name:"workingdir"`
AllowBadUsername bool `long:"workingdir-allowbadusername" description:"Disable username check while search the working dir" env:"SSHPIPERD_WORKINGDIR_ALLOWBADUSERNAME" ini-name:"workingdir-allowbadusername"`
NoCheckPerm bool `long:"workingdir-nocheckperm" description:"Disable 0400 checking when using files in the working dir" env:"SSHPIPERD_WORKINGDIR_NOCHECKPERM" ini-name:"workingdir-nocheckperm"`
}{}
)

37
sshpiperd/upstream/workingdir/plug.go Normal file
View file

@ -0,0 +1,37 @@
package workingdir
import (
"log"
"github.com/tg123/sshpiper/sshpiperd/upstream"
)
var logger *log.Logger
type plugin struct {
}
func (p *plugin) GetName() string {
return "workingdir"
}
func (p *plugin) GetOpts() interface{} {
return &config
}
func (p *plugin) GetFindUpstreamHandle() upstream.UpstreamHandler {
return findUpstreamFromUserfile
}
func (p *plugin) Init(glogger *log.Logger) error {
logger = glogger
logger.Printf("upstream provider: workingdir %v init", config.WorkingDir)
return nil
}
func init() {
upstream.Register("workingdir", &plugin{})
}

2
sshpiperd/workingdir.go → sshpiperd/upstream/workingdir/workingdir.go
View file

@ -3,7 +3,7 @@
//
// https://github.com/tg123/sshpiper
package main
package workingdir
import (
"bufio"

2
sshpiperd/workingdir_test.go → sshpiperd/upstream/workingdir/workingdir_test.go
View file

@ -3,7 +3,7 @@
//
// https://github.com/tg123/sshpiper
package main
package workingdir
import (
"bytes"

31
sshpiperd/ver.go Normal file
View file

@ -0,0 +1,31 @@
package main
import (
"os"
"runtime"
"text/template"
)
var version = "DEV"
var githash = "0000000000"
func showVersion() {
versionTemplate := template.Must(template.New("ver").Parse(`
SSHPiper ver: {{.VER}} by Boshi Lian<farmer1992@gmail.com>
https://github.com/tg123/sshpiper
go runtime : {{.GOVER}}
git hash : {{.GITHASH}}
`[1:]))
versionTemplate.Execute(os.Stdout, struct {
VER string
GOVER string
GITHASH string
}{
VER: version,
GITHASH: githash,
GOVER: runtime.Version(),
})
}

8
vendor/github.com/glacjay/goini/.gitignore generated vendored
View file

@ -1,8 +0,0 @@
.*.swp
*.[689]
[689].out
_obj
_test
_testmain.go

21
vendor/github.com/glacjay/goini/LICENSE.txt generated vendored
View file

@ -1,21 +0,0 @@
The MIT License (MIT)
Copyright (c) [year] [fullname]
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

7
vendor/github.com/glacjay/goini/Makefile generated vendored
View file

@ -1,7 +0,0 @@
test:
go test
format:
gofmt -w *.go
.PHONY: format test

5
vendor/github.com/glacjay/goini/README.md generated vendored
View file

@ -1,5 +0,0 @@
# goini
INI file parser in go.
# See Also
For real apps, you can use [TOML](https://github.com/BurntSushi/toml) instead, which is a better INI format :-)

0
vendor/github.com/glacjay/goini/empty.ini generated vendored
View file

18
vendor/github.com/glacjay/goini/example.ini generated vendored
View file

@ -1,18 +0,0 @@
#
# This is an example of ini file
#
[Pizza]
Ham = yes;
Mushrooms = TRUE;
Capres = 0;
Cheese = Non;
[Wine]
Grape = Cabernet Sauvignon;
Year = 1989;
Country = Spain;
Alcohol = 12.5;

267
vendor/github.com/glacjay/goini/ini.go generated vendored
View file

@ -1,267 +0,0 @@
package ini
import (
"bufio"
"bytes"
"fmt"
"io/ioutil"
"os"
"regexp"
"strconv"
"strings"
"unicode"
)
type Dict map[string]map[string]string
type Error string
var (
regDoubleQuote = regexp.MustCompile("^([^= \t]+)[ \t]*=[ \t]*\"([^\"]*)\"$")
regSingleQuote = regexp.MustCompile("^([^= \t]+)[ \t]*=[ \t]*'([^']*)'$")
regNoQuote = regexp.MustCompile("^([^= \t]+)[ \t]*=[ \t]*([^#;]+)")
regNoValue = regexp.MustCompile("^([^= \t]+)[ \t]*=[ \t]*([#;].*)?")
)
func MustLoadReader(reader *bufio.Reader) Dict {
dict, err := LoadReader(reader)
if err != nil {
panic(err)
}
return dict
}
func MustLoad(filename string) Dict {
dict, err := Load(filename)
if err != nil {
panic(err)
}
return dict
}
func LoadReader(reader *bufio.Reader) (dict Dict, err error) {
dict = make(map[string]map[string]string)
lineno := 0
section := ""
dict[section] = make(map[string]string)
for err == nil {
l, _, err := reader.ReadLine()
if err != nil {
break
}
lineno++
line := strings.TrimFunc(string(l), unicode.IsSpace)
if len(line) == 0 {
continue
}
for line[len(line)-1] == '\\' {
line = line[:len(line)-1]
l, _, err := reader.ReadLine()
if err != nil {
return nil, err
}
line += strings.TrimFunc(string(l), unicode.IsSpace)
}
section, err = dict.parseLine(section, line)
if err != nil {
return nil, newError(
err.Error() + fmt.Sprintf("':%d'.", lineno))
}
}
return
}
func Load(filename string) (Dict, error) {
file, err := os.Open(filename)
if err != nil {
return nil, err
}
defer file.Close()
reader := bufio.NewReader(file)
return LoadReader(reader)
}
func Write(filename string, dict *Dict) error {
buffer := dict.format()
return ioutil.WriteFile(filename, buffer.Bytes(), 0644)
}
func (e Error) Error() string {
return string(e)
}
func (dict Dict) parseLine(section, line string) (string, error) {
// commets
if line[0] == '#' || line[0] == ';' {
return section, nil
}
// section name
if line[0] == '[' && line[len(line)-1] == ']' {
section := strings.TrimFunc(line[1:len(line)-1], unicode.IsSpace)
section = strings.ToLower(section)
dict[section] = make(map[string]string)
return section, nil
}
// key = value
if m := regDoubleQuote.FindAllStringSubmatch(line, 1); m != nil {
dict.add(section, m[0][1], m[0][2])
return section, nil
} else if m = regSingleQuote.FindAllStringSubmatch(line, 1); m != nil {
dict.add(section, m[0][1], m[0][2])
return section, nil
} else if m = regNoQuote.FindAllStringSubmatch(line, 1); m != nil {
dict.add(section, m[0][1], strings.TrimFunc(m[0][2], unicode.IsSpace))
return section, nil
} else if m = regNoValue.FindAllStringSubmatch(line, 1); m != nil {
dict.add(section, m[0][1], "")
return section, nil
}
return section, newError("iniparser: syntax error at ")
}
func (dict Dict) add(section, key, value string) {
key = strings.ToLower(key)
dict[section][key] = value
}
func (dict Dict) GetBool(section, key string) (bool, bool) {
sec, ok := dict[section]
if !ok {
return false, false
}
value, ok := sec[key]
if !ok {
return false, false
}
v := value[0]
if v == 'y' || v == 'Y' || v == '1' || v == 't' || v == 'T' {
return true, true
}
if v == 'n' || v == 'N' || v == '0' || v == 'f' || v == 'F' {
return false, true
}
return false, false
}
func (dict Dict) SetBool(section, key string, value bool) {
dict.SetString(section, key, strconv.FormatBool(value))
}
func (dict Dict) GetString(section, key string) (string, bool) {
sec, ok := dict[section]
if !ok {
return "", false
}
value, ok := sec[key]
if !ok {
return "", false
}
return value, true
}
func (dict Dict) SetString(section, key, value string) {
_, ok := dict[section]
if !ok {
dict[section] = make(map[string]string)
}
dict[section][key] = value
}
func (dict Dict) GetInt(section, key string) (int, bool) {
sec, ok := dict[section]
if !ok {
return 0, false
}
value, ok := sec[key]
if !ok {
return 0, false
}
i, err := strconv.Atoi(value)
if err != nil {
return 0, false
}
return i, true
}
func (dict Dict) SetInt(section, key string, value int) {
dict.SetString(section, key, strconv.FormatInt(int64(value), 10))
}
func (dict Dict) GetDouble(section, key string) (float64, bool) {
sec, ok := dict[section]
if !ok {
return 0, false
}
value, ok := sec[key]
if !ok {
return 0, false
}
d, err := strconv.ParseFloat(value, 64)
if err != nil {
return 0, false
}
return d, true
}
func (dict Dict) SetDouble(section, key string, value float64) {
dict.SetString(section, key, strconv.FormatFloat(value, 'f', -1, 64))
}
func (dict Dict) Delete(section, key string) {
_, ok := dict[section]
if !ok {
return
}
delete(dict[section], key)
// If there are no items left in the section,
// delete the section.
if len(dict[section]) == 0 {
delete(dict, section)
}
}
func (dict Dict) GetSections() []string {
size := len(dict)
sections := make([]string, size)
i := 0
for section, _ := range dict {
sections[i] = section
i++
}
return sections
}
func (dict Dict) String() string {
return (*dict.format()).String()
}
func (dict Dict) format() *bytes.Buffer {
var buffer bytes.Buffer
for key, val := range dict[""] {
buffer.WriteString(fmt.Sprintf("%s = %s\n", key, val))
}
buffer.WriteString("\n")
for section, vals := range dict {
if section == "" {
continue
}
buffer.WriteString(fmt.Sprintf("[%s]\n", section))
for key, val := range vals {
buffer.WriteString(fmt.Sprintf("%s = %s\n", key, val))
}
buffer.WriteString("\n")
}
return &buffer
}
func newError(message string) (e error) {
return Error(message)
}

191
vendor/github.com/glacjay/goini/ini_test.go generated vendored
View file

@ -1,191 +0,0 @@
package ini
import (
"bufio"
"io/ioutil"
"os"
"strings"
"testing"
)
var (
dict Dict
err error
)
func init() {
dict, err = Load("example.ini")
}
func TestLoad(t *testing.T) {
if err != nil {
t.Error("Example: load error:", err)
}
}
func TestLoadFileWithSpaces(t *testing.T) {
if err := ioutil.WriteFile("testLoadFileWithSpaces.ini", []byte(" "), 0777); err != nil {
t.Error("Unable to write test file")
}
defer os.Remove("testLoadFileWithSpaces.ini")
if _, err := Load("testLoadFileWithSpaces.ini"); err != nil {
t.Error("Load: Couldn't load ini file with line consisting only of spaces.")
}
}
func TestWrite(t *testing.T) {
d, err := Load("empty.ini")
if err != nil {
t.Error("Example: load error:", err)
}
d.SetString("", "key", "value")
tempFile, err := ioutil.TempFile("", "")
if err != nil {
t.Error("Write: Couldn't create temp file.", err)
}
err = Write(tempFile.Name(), &d)
if err != nil {
t.Error("Write: Couldn't write to temp config file.", err)
}
contents, err := ioutil.ReadFile(tempFile.Name())
if err != nil {
t.Error("Write: Couldn't read from the temp config file.", err)
}
if string(contents) != "key = value\n\n" {
t.Error("Write: Contents of the config file doesn't match the expected.")
}
}
func TestGetBool(t *testing.T) {
b, found := dict.GetBool("pizza", "ham")
if !found || !b {
t.Error("Example: parse error for key ham of section pizza.")
}
b, found = dict.GetBool("pizza", "mushrooms")
if !found || !b {
t.Error("Example: parse error for key mushrooms of section pizza.")
}
b, found = dict.GetBool("pizza", "capres")
if !found || b {
t.Error("Example: parse error for key capres of section pizza.")
}
b, found = dict.GetBool("pizza", "cheese")
if !found || b {
t.Error("Example: parse error for key cheese of section pizza.")
}
}
func TestGetStringIntAndDouble(t *testing.T) {
str, found := dict.GetString("wine", "grape")
if !found || str != "Cabernet Sauvignon" {
t.Error("Example: parse error for key grape of section wine.")
}
i, found := dict.GetInt("wine", "year")
if !found || i != 1989 {
t.Error("Example: parse error for key year of section wine.")
}
str, found = dict.GetString("wine", "country")
if !found || str != "Spain" {
t.Error("Example: parse error for key grape of section wine.")
}
d, found := dict.GetDouble("wine", "alcohol")
if !found || d != 12.5 {
t.Error("Example: parse error for key grape of section wine.")
}
}
func TestSetBoolAndStringAndIntAndDouble(t *testing.T) {
dict.SetBool("pizza", "ham", false)
b, found := dict.GetBool("pizza", "ham")
if !found || b {
t.Error("Example: bool set error for key ham of section pizza.")
}
dict.SetString("pizza", "ham", "no")
n, found := dict.GetString("pizza", "ham")
if !found || n != "no" {
t.Error("Example: string set error for key ham of section pizza.")
}
dict.SetInt("wine", "year", 1978)
i, found := dict.GetInt("wine", "year")
if !found || i != 1978 {
t.Error("Example: int set error for key year of section wine.")
}
dict.SetDouble("wine", "not-exists", 5.6)
d, found := dict.GetDouble("wine", "not-exists")
if !found || d != 5.6 {
t.Error("Example: float set error for not existing key for wine.")
}
}
func TestDelete(t *testing.T) {
d, err := Load("empty.ini")
if err != nil {
t.Error("Example: load error:", err)
}
d.SetString("pizza", "ham", "yes")
d.Delete("pizza", "ham")
_, found := d.GetString("pizza", "ham")
if found {
t.Error("Example: delete error for key ham of section pizza.")
}
if len(d.GetSections()) > 1 {
t.Error("Only a single section should exist after deletion.")
}
}
func TestGetNotExist(t *testing.T) {
_, found := dict.GetString("not", "exist")
if found {
t.Error("There is no key exist of section not.")
}
}
func TestGetSections(t *testing.T) {
sections := dict.GetSections()
if len(sections) != 3 {
t.Error("The number of sections is wrong:", len(sections))
}
for _, section := range sections {
if section != "" && section != "pizza" && section != "wine" {
t.Errorf("Section '%s' should not be exist.", section)
}
}
}
func TestString(t *testing.T) {
d, err := Load("empty.ini")
if err != nil {
t.Error("Example: load error:", err)
}
d.SetBool("", "key1", true)
d.SetString("section1", "key1", "value2")
d.SetInt("section1", "key2", 5)
d.SetDouble("section1", "key3", 1.3)
d.SetDouble("section2", "key1", 5.0)
reader := strings.NewReader(d.String())
d2, err := LoadReader(bufio.NewReader(reader))
if err != nil {
t.Error("Example: load error:", err)
}
b, found := d2.GetBool("", "key1")
if !found || !b {
t.Errorf("Stringify failed for key1")
}
s, found := d2.GetString("section1", "key1")
if !found || s != "value2" {
t.Error("Stringify failed for section1, key1")
}
i, found := d2.GetInt("section1", "key2")
if !found || i != 5 {
t.Error("Stringify failed for section1, key2")
}
db, found := d2.GetDouble("section1", "key3")
if !found || db != 1.3 {
t.Error("Stringify failed for section1, key3")
}
db, found = d2.GetDouble("section2", "key1")
if !found || db != 5.0 {
t.Error("Stringify failed for section2, key1")
}
}

38
vendor/github.com/jessevdk/go-flags/.travis.yml generated vendored Normal file
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@ -0,0 +1,38 @@
language: go
go:
- 1.6.x
- 1.7.x
install:
# go-flags
- go get -d -v ./...
- go build -v ./...
# linting
- go get github.com/golang/lint
- go install github.com/golang/lint/golint
# code coverage
- go get golang.org/x/tools/cmd/cover
- go get github.com/onsi/ginkgo/ginkgo
- go get github.com/modocache/gover
- if [ "$TRAVIS_SECURE_ENV_VARS" = "true" ]; then go get github.com/mattn/goveralls; fi
script:
# go-flags
- $(exit $(gofmt -l . | wc -l))
- go test -v ./...
# linting
- go tool vet -all=true -v=true . || true
- $(go env GOPATH | awk 'BEGIN{FS=":"} {print $1}')/bin/golint ./...
# code coverage
- $(go env GOPATH | awk 'BEGIN{FS=":"} {print $1}')/bin/ginkgo -r -cover
- $(go env GOPATH | awk 'BEGIN{FS=":"} {print $1}')/bin/gover
- if [ "$TRAVIS_SECURE_ENV_VARS" = "true" ]; then $(go env GOPATH | awk 'BEGIN{FS=":"} {print $1}')/bin/goveralls -coverprofile=gover.coverprofile -service=travis-ci -repotoken $COVERALLS_TOKEN; fi
env:
# coveralls.io
secure: "RCYbiB4P0RjQRIoUx/vG/AjP3mmYCbzOmr86DCww1Z88yNcy3hYr3Cq8rpPtYU5v0g7wTpu4adaKIcqRE9xknYGbqj3YWZiCoBP1/n4Z+9sHW3Dsd9D/GRGeHUus0laJUGARjWoCTvoEtOgTdGQDoX7mH+pUUY0FBltNYUdOiiU="

16
vendor/github.com/spf13/pflag/LICENSE → vendor/github.com/jessevdk/go-flags/LICENSE generated vendored
View file

@ -1,19 +1,17 @@
Copyright (c) 2012 Alex Ogier. All rights reserved.
Copyright (c) 2012 The Go Authors. All rights reserved.
Copyright (c) 2012 Jesse van den Kieboom. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

135
vendor/github.com/jessevdk/go-flags/README.md generated vendored Normal file
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@ -0,0 +1,135 @@
go-flags: a go library for parsing command line arguments
=========================================================
[![GoDoc](https://godoc.org/github.com/jessevdk/go-flags?status.png)](https://godoc.org/github.com/jessevdk/go-flags) [![Build Status](https://travis-ci.org/jessevdk/go-flags.svg?branch=master)](https://travis-ci.org/jessevdk/go-flags) [![Coverage Status](https://img.shields.io/coveralls/jessevdk/go-flags.svg)](https://coveralls.io/r/jessevdk/go-flags?branch=master)
This library provides similar functionality to the builtin flag library of
go, but provides much more functionality and nicer formatting. From the
documentation:
Package flags provides an extensive command line option parser.
The flags package is similar in functionality to the go builtin flag package
but provides more options and uses reflection to provide a convenient and
succinct way of specifying command line options.
Supported features:
* Options with short names (-v)
* Options with long names (--verbose)
* Options with and without arguments (bool v.s. other type)
* Options with optional arguments and default values
* Multiple option groups each containing a set of options
* Generate and print well-formatted help message
* Passing remaining command line arguments after -- (optional)
* Ignoring unknown command line options (optional)
* Supports -I/usr/include -I=/usr/include -I /usr/include option argument specification
* Supports multiple short options -aux
* Supports all primitive go types (string, int{8..64}, uint{8..64}, float)
* Supports same option multiple times (can store in slice or last option counts)
* Supports maps
* Supports function callbacks
* Supports namespaces for (nested) option groups
The flags package uses structs, reflection and struct field tags
to allow users to specify command line options. This results in very simple
and concise specification of your application options. For example:
```go
type Options struct {
Verbose []bool `short:"v" long:"verbose" description:"Show verbose debug information"`
}
```
This specifies one option with a short name -v and a long name --verbose.
When either -v or --verbose is found on the command line, a 'true' value
will be appended to the Verbose field. e.g. when specifying -vvv, the
resulting value of Verbose will be {[true, true, true]}.
Example:
--------
```go
var opts struct {
// Slice of bool will append 'true' each time the option
// is encountered (can be set multiple times, like -vvv)
Verbose []bool `short:"v" long:"verbose" description:"Show verbose debug information"`
// Example of automatic marshalling to desired type (uint)
Offset uint `long:"offset" description:"Offset"`
// Example of a callback, called each time the option is found.
Call func(string) `short:"c" description:"Call phone number"`
// Example of a required flag
Name string `short:"n" long:"name" description:"A name" required:"true"`
// Example of a value name
File string `short:"f" long:"file" description:"A file" value-name:"FILE"`
// Example of a pointer
Ptr *int `short:"p" description:"A pointer to an integer"`
// Example of a slice of strings
StringSlice []string `short:"s" description:"A slice of strings"`
// Example of a slice of pointers
PtrSlice []*string `long:"ptrslice" description:"A slice of pointers to string"`
// Example of a map
IntMap map[string]int `long:"intmap" description:"A map from string to int"`
}
// Callback which will invoke callto:<argument> to call a number.
// Note that this works just on OS X (and probably only with
// Skype) but it shows the idea.
opts.Call = func(num string) {
cmd := exec.Command("open", "callto:"+num)
cmd.Start()
cmd.Process.Release()
}
// Make some fake arguments to parse.
args := []string{
"-vv",
"--offset=5",
"-n", "Me",
"-p", "3",
"-s", "hello",
"-s", "world",
"--ptrslice", "hello",
"--ptrslice", "world",
"--intmap", "a:1",
"--intmap", "b:5",
"arg1",
"arg2",
"arg3",
}
// Parse flags from `args'. Note that here we use flags.ParseArgs for
// the sake of making a working example. Normally, you would simply use
// flags.Parse(&opts) which uses os.Args
args, err := flags.ParseArgs(&opts, args)
if err != nil {
panic(err)
os.Exit(1)
}
fmt.Printf("Verbosity: %v\n", opts.Verbose)
fmt.Printf("Offset: %d\n", opts.Offset)
fmt.Printf("Name: %s\n", opts.Name)
fmt.Printf("Ptr: %d\n", *opts.Ptr)
fmt.Printf("StringSlice: %v\n", opts.StringSlice)
fmt.Printf("PtrSlice: [%v %v]\n", *opts.PtrSlice[0], *opts.PtrSlice[1])
fmt.Printf("IntMap: [a:%v b:%v]\n", opts.IntMap["a"], opts.IntMap["b"])
fmt.Printf("Remaining args: %s\n", strings.Join(args, " "))
// Output: Verbosity: [true true]
// Offset: 5
// Name: Me
// Ptr: 3
// StringSlice: [hello world]
// PtrSlice: [hello world]
// IntMap: [a:1 b:5]
// Remaining args: arg1 arg2 arg3
```
More information can be found in the godocs: <http://godoc.org/github.com/jessevdk/go-flags>

27
vendor/github.com/jessevdk/go-flags/arg.go generated vendored Normal file
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@ -0,0 +1,27 @@
package flags
import (
"reflect"
)
// Arg represents a positional argument on the command line.
type Arg struct {
// The name of the positional argument (used in the help)
Name string
// A description of the positional argument (used in the help)
Description string
// The minimal number of required positional arguments
Required int
// The maximum number of required positional arguments
RequiredMaximum int
value reflect.Value
tag multiTag
}
func (a *Arg) isRemaining() bool {
return a.value.Type().Kind() == reflect.Slice
}

163
vendor/github.com/jessevdk/go-flags/arg_test.go generated vendored Normal file
View file

@ -0,0 +1,163 @@
package flags
import (
"testing"
)
func TestPositional(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Positional struct {
Command int
Filename string
Rest []string
} `positional-args:"yes" required:"yes"`
}{}
p := NewParser(&opts, Default)
ret, err := p.ParseArgs([]string{"10", "arg_test.go", "a", "b"})
if err != nil {
t.Fatalf("Unexpected error: %v", err)
return
}
if opts.Positional.Command != 10 {
t.Fatalf("Expected opts.Positional.Command to be 10, but got %v", opts.Positional.Command)
}
if opts.Positional.Filename != "arg_test.go" {
t.Fatalf("Expected opts.Positional.Filename to be \"arg_test.go\", but got %v", opts.Positional.Filename)
}
assertStringArray(t, opts.Positional.Rest, []string{"a", "b"})
assertStringArray(t, ret, []string{})
}
func TestPositionalRequired(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Positional struct {
Command int
Filename string
Rest []string
} `positional-args:"yes" required:"yes"`
}{}
p := NewParser(&opts, None)
_, err := p.ParseArgs([]string{"10"})
assertError(t, err, ErrRequired, "the required argument `Filename` was not provided")
}
func TestPositionalRequiredRest1Fail(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Positional struct {
Rest []string `required:"yes"`
} `positional-args:"yes"`
}{}
p := NewParser(&opts, None)
_, err := p.ParseArgs([]string{})
assertError(t, err, ErrRequired, "the required argument `Rest (at least 1 argument)` was not provided")
}
func TestPositionalRequiredRest1Pass(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Positional struct {
Rest []string `required:"yes"`
} `positional-args:"yes"`
}{}
p := NewParser(&opts, None)
_, err := p.ParseArgs([]string{"rest1"})
if err != nil {
t.Fatalf("Unexpected error: %v", err)
return
}
if len(opts.Positional.Rest) != 1 {
t.Fatalf("Expected 1 positional rest argument")
}
assertString(t, opts.Positional.Rest[0], "rest1")
}
func TestPositionalRequiredRest2Fail(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Positional struct {
Rest []string `required:"2"`
} `positional-args:"yes"`
}{}
p := NewParser(&opts, None)
_, err := p.ParseArgs([]string{"rest1"})
assertError(t, err, ErrRequired, "the required argument `Rest (at least 2 arguments, but got only 1)` was not provided")
}
func TestPositionalRequiredRest2Pass(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Positional struct {
Rest []string `required:"2"`
} `positional-args:"yes"`
}{}
p := NewParser(&opts, None)
_, err := p.ParseArgs([]string{"rest1", "rest2", "rest3"})
if err != nil {
t.Fatalf("Unexpected error: %v", err)
return
}
if len(opts.Positional.Rest) != 3 {
t.Fatalf("Expected 3 positional rest argument")
}
assertString(t, opts.Positional.Rest[0], "rest1")
assertString(t, opts.Positional.Rest[1], "rest2")
assertString(t, opts.Positional.Rest[2], "rest3")
}
func TestPositionalRequiredRestRangeFail(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Positional struct {
Rest []string `required:"1-2"`
} `positional-args:"yes"`
}{}
p := NewParser(&opts, None)
_, err := p.ParseArgs([]string{"rest1", "rest2", "rest3"})
assertError(t, err, ErrRequired, "the required argument `Rest (at most 2 arguments, but got 3)` was not provided")
}
func TestPositionalRequiredRestRangeEmptyFail(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Positional struct {
Rest []string `required:"0-0"`
} `positional-args:"yes"`
}{}
p := NewParser(&opts, None)
_, err := p.ParseArgs([]string{"some", "thing"})
assertError(t, err, ErrRequired, "the required argument `Rest (zero arguments)` was not provided")
}

177
vendor/github.com/jessevdk/go-flags/assert_test.go generated vendored Normal file
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@ -0,0 +1,177 @@
package flags
import (
"fmt"
"io"
"io/ioutil"
"os"
"os/exec"
"path"
"runtime"
"testing"
)
func assertCallerInfo() (string, int) {
ptr := make([]uintptr, 15)
n := runtime.Callers(1, ptr)
if n == 0 {
return "", 0
}
mef := runtime.FuncForPC(ptr[0])
mefile, meline := mef.FileLine(ptr[0])
for i := 2; i < n; i++ {
f := runtime.FuncForPC(ptr[i])
file, line := f.FileLine(ptr[i])
if file != mefile {
return file, line
}
}
return mefile, meline
}
func assertErrorf(t *testing.T, format string, args ...interface{}) {
msg := fmt.Sprintf(format, args...)
file, line := assertCallerInfo()
t.Errorf("%s:%d: %s", path.Base(file), line, msg)
}
func assertFatalf(t *testing.T, format string, args ...interface{}) {
msg := fmt.Sprintf(format, args...)
file, line := assertCallerInfo()
t.Fatalf("%s:%d: %s", path.Base(file), line, msg)
}
func assertString(t *testing.T, a string, b string) {
if a != b {
assertErrorf(t, "Expected %#v, but got %#v", b, a)
}
}
func assertStringArray(t *testing.T, a []string, b []string) {
if len(a) != len(b) {
assertErrorf(t, "Expected %#v, but got %#v", b, a)
return
}
for i, v := range a {
if b[i] != v {
assertErrorf(t, "Expected %#v, but got %#v", b, a)
return
}
}
}
func assertBoolArray(t *testing.T, a []bool, b []bool) {
if len(a) != len(b) {
assertErrorf(t, "Expected %#v, but got %#v", b, a)
return
}
for i, v := range a {
if b[i] != v {
assertErrorf(t, "Expected %#v, but got %#v", b, a)
return
}
}
}
func assertParserSuccess(t *testing.T, data interface{}, args ...string) (*Parser, []string) {
parser := NewParser(data, Default&^PrintErrors)
ret, err := parser.ParseArgs(args)
if err != nil {
t.Fatalf("Unexpected parse error: %s", err)
return nil, nil
}
return parser, ret
}
func assertParseSuccess(t *testing.T, data interface{}, args ...string) []string {
_, ret := assertParserSuccess(t, data, args...)
return ret
}
func assertError(t *testing.T, err error, typ ErrorType, msg string) {
if err == nil {
assertFatalf(t, "Expected error: %s", msg)
return
}
if e, ok := err.(*Error); !ok {
assertFatalf(t, "Expected Error type, but got %#v", err)
} else {
if e.Type != typ {
assertErrorf(t, "Expected error type {%s}, but got {%s}", typ, e.Type)
}
if e.Message != msg {
assertErrorf(t, "Expected error message %#v, but got %#v", msg, e.Message)
}
}
}
func assertParseFail(t *testing.T, typ ErrorType, msg string, data interface{}, args ...string) []string {
parser := NewParser(data, Default&^PrintErrors)
ret, err := parser.ParseArgs(args)
assertError(t, err, typ, msg)
return ret
}
func diff(a, b string) (string, error) {
atmp, err := ioutil.TempFile("", "help-diff")
if err != nil {
return "", err
}
btmp, err := ioutil.TempFile("", "help-diff")
if err != nil {
return "", err
}
if _, err := io.WriteString(atmp, a); err != nil {
return "", err
}
if _, err := io.WriteString(btmp, b); err != nil {
return "", err
}
ret, err := exec.Command("diff", "-u", "-d", "--label", "got", atmp.Name(), "--label", "expected", btmp.Name()).Output()
os.Remove(atmp.Name())
os.Remove(btmp.Name())
if err.Error() == "exit status 1" {
return string(ret), nil
}
return string(ret), err
}
func assertDiff(t *testing.T, actual, expected, msg string) {
if actual == expected {
return
}
ret, err := diff(actual, expected)
if err != nil {
assertErrorf(t, "Unexpected diff error: %s", err)
assertErrorf(t, "Unexpected %s, expected:\n\n%s\n\nbut got\n\n%s", msg, expected, actual)
} else {
assertErrorf(t, "Unexpected %s:\n\n%s", msg, ret)
}
}

16
vendor/github.com/jessevdk/go-flags/check_crosscompile.sh generated vendored Executable file
View file

@ -0,0 +1,16 @@
#!/bin/bash
set -e
echo '# linux arm7'
GOARM=7 GOARCH=arm GOOS=linux go build
echo '# linux arm5'
GOARM=5 GOARCH=arm GOOS=linux go build
echo '# windows 386'
GOARCH=386 GOOS=windows go build
echo '# windows amd64'
GOARCH=amd64 GOOS=windows go build
echo '# darwin'
GOARCH=amd64 GOOS=darwin go build
echo '# freebsd'
GOARCH=amd64 GOOS=freebsd go build

59
vendor/github.com/jessevdk/go-flags/closest.go generated vendored Normal file
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@ -0,0 +1,59 @@
package flags
func levenshtein(s string, t string) int {
if len(s) == 0 {
return len(t)
}
if len(t) == 0 {
return len(s)
}
dists := make([][]int, len(s)+1)
for i := range dists {
dists[i] = make([]int, len(t)+1)
dists[i][0] = i
}
for j := range t {
dists[0][j] = j
}
for i, sc := range s {
for j, tc := range t {
if sc == tc {
dists[i+1][j+1] = dists[i][j]
} else {
dists[i+1][j+1] = dists[i][j] + 1
if dists[i+1][j] < dists[i+1][j+1] {
dists[i+1][j+1] = dists[i+1][j] + 1
}
if dists[i][j+1] < dists[i+1][j+1] {
dists[i+1][j+1] = dists[i][j+1] + 1
}
}
}
}
return dists[len(s)][len(t)]
}
func closestChoice(cmd string, choices []string) (string, int) {
if len(choices) == 0 {
return "", 0
}
mincmd := -1
mindist := -1
for i, c := range choices {
l := levenshtein(cmd, c)
if mincmd < 0 || l < mindist {
mindist = l
mincmd = i
}
}
return choices[mincmd], mindist
}

455
vendor/github.com/jessevdk/go-flags/command.go generated vendored Normal file
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@ -0,0 +1,455 @@
package flags
import (
"reflect"
"sort"
"strconv"
"strings"
"unsafe"
)
// Command represents an application command. Commands can be added to the
// parser (which itself is a command) and are selected/executed when its name
// is specified on the command line. The Command type embeds a Group and
// therefore also carries a set of command specific options.
type Command struct {
// Embedded, see Group for more information
*Group
// The name by which the command can be invoked
Name string
// The active sub command (set by parsing) or nil
Active *Command
// Whether subcommands are optional
SubcommandsOptional bool
// Aliases for the command
Aliases []string
// Whether positional arguments are required
ArgsRequired bool
commands []*Command
hasBuiltinHelpGroup bool
args []*Arg
}
// Commander is an interface which can be implemented by any command added in
// the options. When implemented, the Execute method will be called for the last
// specified (sub)command providing the remaining command line arguments.
type Commander interface {
// Execute will be called for the last active (sub)command. The
// args argument contains the remaining command line arguments. The
// error that Execute returns will be eventually passed out of the
// Parse method of the Parser.
Execute(args []string) error
}
// Usage is an interface which can be implemented to show a custom usage string
// in the help message shown for a command.
type Usage interface {
// Usage is called for commands to allow customized printing of command
// usage in the generated help message.
Usage() string
}
type lookup struct {
shortNames map[string]*Option
longNames map[string]*Option
commands map[string]*Command
}
// AddCommand adds a new command to the parser with the given name and data. The
// data needs to be a pointer to a struct from which the fields indicate which
// options are in the command. The provided data can implement the Command and
// Usage interfaces.
func (c *Command) AddCommand(command string, shortDescription string, longDescription string, data interface{}) (*Command, error) {
cmd := newCommand(command, shortDescription, longDescription, data)
cmd.parent = c
if err := cmd.scan(); err != nil {
return nil, err
}
c.commands = append(c.commands, cmd)
return cmd, nil
}
// AddGroup adds a new group to the command with the given name and data. The
// data needs to be a pointer to a struct from which the fields indicate which
// options are in the group.
func (c *Command) AddGroup(shortDescription string, longDescription string, data interface{}) (*Group, error) {
group := newGroup(shortDescription, longDescription, data)
group.parent = c
if err := group.scanType(c.scanSubcommandHandler(group)); err != nil {
return nil, err
}
c.groups = append(c.groups, group)
return group, nil
}
// Commands returns a list of subcommands of this command.
func (c *Command) Commands() []*Command {
return c.commands
}
// Find locates the subcommand with the given name and returns it. If no such
// command can be found Find will return nil.
func (c *Command) Find(name string) *Command {
for _, cc := range c.commands {
if cc.match(name) {
return cc
}
}
return nil
}
// FindOptionByLongName finds an option that is part of the command, or any of
// its parent commands, by matching its long name (including the option
// namespace).
func (c *Command) FindOptionByLongName(longName string) (option *Option) {
for option == nil && c != nil {
option = c.Group.FindOptionByLongName(longName)
c, _ = c.parent.(*Command)
}
return option
}
// FindOptionByShortName finds an option that is part of the command, or any of
// its parent commands, by matching its long name (including the option
// namespace).
func (c *Command) FindOptionByShortName(shortName rune) (option *Option) {
for option == nil && c != nil {
option = c.Group.FindOptionByShortName(shortName)
c, _ = c.parent.(*Command)
}
return option
}
// Args returns a list of positional arguments associated with this command.
func (c *Command) Args() []*Arg {
ret := make([]*Arg, len(c.args))
copy(ret, c.args)
return ret
}
func newCommand(name string, shortDescription string, longDescription string, data interface{}) *Command {
return &Command{
Group: newGroup(shortDescription, longDescription, data),
Name: name,
}
}
func (c *Command) scanSubcommandHandler(parentg *Group) scanHandler {
f := func(realval reflect.Value, sfield *reflect.StructField) (bool, error) {
mtag := newMultiTag(string(sfield.Tag))
if err := mtag.Parse(); err != nil {
return true, err
}
positional := mtag.Get("positional-args")
if len(positional) != 0 {
stype := realval.Type()
for i := 0; i < stype.NumField(); i++ {
field := stype.Field(i)
m := newMultiTag((string(field.Tag)))
if err := m.Parse(); err != nil {
return true, err
}
name := m.Get("positional-arg-name")
if len(name) == 0 {
name = field.Name
}
required := -1
requiredMaximum := -1
sreq := m.Get("required")
if sreq != "" {
required = 1
rng := strings.SplitN(sreq, "-", 2)
if len(rng) > 1 {
if preq, err := strconv.ParseInt(rng[0], 10, 32); err == nil {
required = int(preq)
}
if preq, err := strconv.ParseInt(rng[1], 10, 32); err == nil {
requiredMaximum = int(preq)
}
} else {
if preq, err := strconv.ParseInt(sreq, 10, 32); err == nil {
required = int(preq)
}
}
}
arg := &Arg{
Name: name,
Description: m.Get("description"),
Required: required,
RequiredMaximum: requiredMaximum,
value: realval.Field(i),
tag: m,
}
c.args = append(c.args, arg)
if len(mtag.Get("required")) != 0 {
c.ArgsRequired = true
}
}
return true, nil
}
subcommand := mtag.Get("command")
if len(subcommand) != 0 {
ptrval := reflect.NewAt(realval.Type(), unsafe.Pointer(realval.UnsafeAddr()))
shortDescription := mtag.Get("description")
longDescription := mtag.Get("long-description")
subcommandsOptional := mtag.Get("subcommands-optional")
aliases := mtag.GetMany("alias")
subc, err := c.AddCommand(subcommand, shortDescription, longDescription, ptrval.Interface())
if err != nil {
return true, err
}
subc.Hidden = mtag.Get("hidden") != ""
if len(subcommandsOptional) > 0 {
subc.SubcommandsOptional = true
}
if len(aliases) > 0 {
subc.Aliases = aliases
}
return true, nil
}
return parentg.scanSubGroupHandler(realval, sfield)
}
return f
}
func (c *Command) scan() error {
return c.scanType(c.scanSubcommandHandler(c.Group))
}
func (c *Command) eachOption(f func(*Command, *Group, *Option)) {
c.eachCommand(func(c *Command) {
c.eachGroup(func(g *Group) {
for _, option := range g.options {
f(c, g, option)
}
})
}, true)
}
func (c *Command) eachCommand(f func(*Command), recurse bool) {
f(c)
for _, cc := range c.commands {
if recurse {
cc.eachCommand(f, true)
} else {
f(cc)
}
}
}
func (c *Command) eachActiveGroup(f func(cc *Command, g *Group)) {
c.eachGroup(func(g *Group) {
f(c, g)
})
if c.Active != nil {
c.Active.eachActiveGroup(f)
}
}
func (c *Command) addHelpGroups(showHelp func() error) {
if !c.hasBuiltinHelpGroup {
c.addHelpGroup(showHelp)
c.hasBuiltinHelpGroup = true
}
for _, cc := range c.commands {
cc.addHelpGroups(showHelp)
}
}
func (c *Command) makeLookup() lookup {
ret := lookup{
shortNames: make(map[string]*Option),
longNames: make(map[string]*Option),
commands: make(map[string]*Command),
}
parent := c.parent
var parents []*Command
for parent != nil {
if cmd, ok := parent.(*Command); ok {
parents = append(parents, cmd)
parent = cmd.parent
} else {
parent = nil
}
}
for i := len(parents) - 1; i >= 0; i-- {
parents[i].fillLookup(&ret, true)
}
c.fillLookup(&ret, false)
return ret
}
func (c *Command) fillLookup(ret *lookup, onlyOptions bool) {
c.eachGroup(func(g *Group) {
for _, option := range g.options {
if option.ShortName != 0 {
ret.shortNames[string(option.ShortName)] = option
}
if len(option.LongName) > 0 {
ret.longNames[option.LongNameWithNamespace()] = option
}
}
})
if onlyOptions {
return
}
for _, subcommand := range c.commands {
ret.commands[subcommand.Name] = subcommand
for _, a := range subcommand.Aliases {
ret.commands[a] = subcommand
}
}
}
func (c *Command) groupByName(name string) *Group {
if grp := c.Group.groupByName(name); grp != nil {
return grp
}
for _, subc := range c.commands {
prefix := subc.Name + "."
if strings.HasPrefix(name, prefix) {
if grp := subc.groupByName(name[len(prefix):]); grp != nil {
return grp
}
} else if name == subc.Name {
return subc.Group
}
}
return nil
}
type commandList []*Command
func (c commandList) Less(i, j int) bool {
return c[i].Name < c[j].Name
}
func (c commandList) Len() int {
return len(c)
}
func (c commandList) Swap(i, j int) {
c[i], c[j] = c[j], c[i]
}
func (c *Command) sortedVisibleCommands() []*Command {
ret := commandList(c.visibleCommands())
sort.Sort(ret)
return []*Command(ret)
}
func (c *Command) visibleCommands() []*Command {
ret := make([]*Command, 0, len(c.commands))
for _, cmd := range c.commands {
if !cmd.Hidden {
ret = append(ret, cmd)
}
}
return ret
}
func (c *Command) match(name string) bool {
if c.Name == name {
return true
}
for _, v := range c.Aliases {
if v == name {
return true
}
}
return false
}
func (c *Command) hasCliOptions() bool {
ret := false
c.eachGroup(func(g *Group) {
if g.isBuiltinHelp {
return
}
for _, opt := range g.options {
if opt.canCli() {
ret = true
}
}
})
return ret
}
func (c *Command) fillParseState(s *parseState) {
s.positional = make([]*Arg, len(c.args))
copy(s.positional, c.args)
s.lookup = c.makeLookup()
s.command = c
}

582
vendor/github.com/jessevdk/go-flags/command_test.go generated vendored Normal file
View file

@ -0,0 +1,582 @@
package flags
import (
"fmt"
"testing"
)
func TestCommandInline(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Command struct {
G bool `short:"g"`
} `command:"cmd"`
}{}
p, ret := assertParserSuccess(t, &opts, "-v", "cmd", "-g")
assertStringArray(t, ret, []string{})
if p.Active == nil {
t.Errorf("Expected active command")
}
if !opts.Value {
t.Errorf("Expected Value to be true")
}
if !opts.Command.G {
t.Errorf("Expected Command.G to be true")
}
if p.Command.Find("cmd") != p.Active {
t.Errorf("Expected to find command `cmd' to be active")
}
}
func TestCommandInlineMulti(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
C1 struct {
} `command:"c1"`
C2 struct {
G bool `short:"g"`
} `command:"c2"`
}{}
p, ret := assertParserSuccess(t, &opts, "-v", "c2", "-g")
assertStringArray(t, ret, []string{})
if p.Active == nil {
t.Errorf("Expected active command")
}
if !opts.Value {
t.Errorf("Expected Value to be true")
}
if !opts.C2.G {
t.Errorf("Expected C2.G to be true")
}
if p.Command.Find("c1") == nil {
t.Errorf("Expected to find command `c1'")
}
if c2 := p.Command.Find("c2"); c2 == nil {
t.Errorf("Expected to find command `c2'")
} else if c2 != p.Active {
t.Errorf("Expected to find command `c2' to be active")
}
}
func TestCommandFlagOrder1(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Command struct {
G bool `short:"g"`
} `command:"cmd"`
}{}
assertParseFail(t, ErrUnknownFlag, "unknown flag `g'", &opts, "-v", "-g", "cmd")
}
func TestCommandFlagOrder2(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Command struct {
G bool `short:"g"`
} `command:"cmd"`
}{}
assertParseSuccess(t, &opts, "cmd", "-v", "-g")
if !opts.Value {
t.Errorf("Expected Value to be true")
}
if !opts.Command.G {
t.Errorf("Expected Command.G to be true")
}
}
func TestCommandFlagOrderSub(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Command struct {
G bool `short:"g"`
SubCommand struct {
B bool `short:"b"`
} `command:"sub"`
} `command:"cmd"`
}{}
assertParseSuccess(t, &opts, "cmd", "sub", "-v", "-g", "-b")
if !opts.Value {
t.Errorf("Expected Value to be true")
}
if !opts.Command.G {
t.Errorf("Expected Command.G to be true")
}
if !opts.Command.SubCommand.B {
t.Errorf("Expected Command.SubCommand.B to be true")
}
}
func TestCommandFlagOverride1(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Command struct {
Value bool `short:"v"`
} `command:"cmd"`
}{}
assertParseSuccess(t, &opts, "-v", "cmd")
if !opts.Value {
t.Errorf("Expected Value to be true")
}
if opts.Command.Value {
t.Errorf("Expected Command.Value to be false")
}
}
func TestCommandFlagOverride2(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Command struct {
Value bool `short:"v"`
} `command:"cmd"`
}{}
assertParseSuccess(t, &opts, "cmd", "-v")
if opts.Value {
t.Errorf("Expected Value to be false")
}
if !opts.Command.Value {
t.Errorf("Expected Command.Value to be true")
}
}
func TestCommandFlagOverrideSub(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Command struct {
Value bool `short:"v"`
SubCommand struct {
Value bool `short:"v"`
} `command:"sub"`
} `command:"cmd"`
}{}
assertParseSuccess(t, &opts, "cmd", "sub", "-v")
if opts.Value {
t.Errorf("Expected Value to be false")
}
if opts.Command.Value {
t.Errorf("Expected Command.Value to be false")
}
if !opts.Command.SubCommand.Value {
t.Errorf("Expected Command.Value to be true")
}
}
func TestCommandFlagOverrideSub2(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Command struct {
Value bool `short:"v"`
SubCommand struct {
G bool `short:"g"`
} `command:"sub"`
} `command:"cmd"`
}{}
assertParseSuccess(t, &opts, "cmd", "sub", "-v")
if opts.Value {
t.Errorf("Expected Value to be false")
}
if !opts.Command.Value {
t.Errorf("Expected Command.Value to be true")
}
}
func TestCommandEstimate(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Cmd1 struct {
} `command:"remove"`
Cmd2 struct {
} `command:"add"`
}{}
p := NewParser(&opts, None)
_, err := p.ParseArgs([]string{})
assertError(t, err, ErrCommandRequired, "Please specify one command of: add or remove")
}
func TestCommandEstimate2(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Cmd1 struct {
} `command:"remove"`
Cmd2 struct {
} `command:"add"`
}{}
p := NewParser(&opts, None)
_, err := p.ParseArgs([]string{"rmive"})
assertError(t, err, ErrUnknownCommand, "Unknown command `rmive', did you mean `remove'?")
}
type testCommand struct {
G bool `short:"g"`
Executed bool
EArgs []string
}
func (c *testCommand) Execute(args []string) error {
c.Executed = true
c.EArgs = args
return nil
}
func TestCommandExecute(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Command testCommand `command:"cmd"`
}{}
assertParseSuccess(t, &opts, "-v", "cmd", "-g", "a", "b")
if !opts.Value {
t.Errorf("Expected Value to be true")
}
if !opts.Command.Executed {
t.Errorf("Did not execute command")
}
if !opts.Command.G {
t.Errorf("Expected Command.C to be true")
}
assertStringArray(t, opts.Command.EArgs, []string{"a", "b"})
}
func TestCommandClosest(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Cmd1 struct {
} `command:"remove"`
Cmd2 struct {
} `command:"add"`
}{}
args := assertParseFail(t, ErrUnknownCommand, "Unknown command `addd', did you mean `add'?", &opts, "-v", "addd")
assertStringArray(t, args, []string{"addd"})
}
func TestCommandAdd(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
}{}
var cmd = struct {
G bool `short:"g"`
}{}
p := NewParser(&opts, Default)
c, err := p.AddCommand("cmd", "", "", &cmd)
if err != nil {
t.Fatalf("Unexpected error: %v", err)
return
}
ret, err := p.ParseArgs([]string{"-v", "cmd", "-g", "rest"})
if err != nil {
t.Fatalf("Unexpected error: %v", err)
return
}
assertStringArray(t, ret, []string{"rest"})
if !opts.Value {
t.Errorf("Expected Value to be true")
}
if !cmd.G {
t.Errorf("Expected Command.G to be true")
}
if p.Command.Find("cmd") != c {
t.Errorf("Expected to find command `cmd'")
}
if p.Commands()[0] != c {
t.Errorf("Expected command %#v, but got %#v", c, p.Commands()[0])
}
if c.Options()[0].ShortName != 'g' {
t.Errorf("Expected short name `g' but got %v", c.Options()[0].ShortName)
}
}
func TestCommandNestedInline(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Command struct {
G bool `short:"g"`
Nested struct {
N string `long:"n"`
} `command:"nested"`
} `command:"cmd"`
}{}
p, ret := assertParserSuccess(t, &opts, "-v", "cmd", "-g", "nested", "--n", "n", "rest")
assertStringArray(t, ret, []string{"rest"})
if !opts.Value {
t.Errorf("Expected Value to be true")
}
if !opts.Command.G {
t.Errorf("Expected Command.G to be true")
}
assertString(t, opts.Command.Nested.N, "n")
if c := p.Command.Find("cmd"); c == nil {
t.Errorf("Expected to find command `cmd'")
} else {
if c != p.Active {
t.Errorf("Expected `cmd' to be the active parser command")
}
if nested := c.Find("nested"); nested == nil {
t.Errorf("Expected to find command `nested'")
} else if nested != c.Active {
t.Errorf("Expected to find command `nested' to be the active `cmd' command")
}
}
}
func TestRequiredOnCommand(t *testing.T) {
var opts = struct {
Value bool `short:"v" required:"true"`
Command struct {
G bool `short:"g"`
} `command:"cmd"`
}{}
assertParseFail(t, ErrRequired, fmt.Sprintf("the required flag `%cv' was not specified", defaultShortOptDelimiter), &opts, "cmd")
}
func TestRequiredAllOnCommand(t *testing.T) {
var opts = struct {
Value bool `short:"v" required:"true"`
Missing bool `long:"missing" required:"true"`
Command struct {
G bool `short:"g"`
} `command:"cmd"`
}{}
assertParseFail(t, ErrRequired, fmt.Sprintf("the required flags `%smissing' and `%cv' were not specified", defaultLongOptDelimiter, defaultShortOptDelimiter), &opts, "cmd")
}
func TestDefaultOnCommand(t *testing.T) {
var opts = struct {
Command struct {
G string `short:"g" default:"value"`
} `command:"cmd"`
}{}
assertParseSuccess(t, &opts, "cmd")
if opts.Command.G != "value" {
t.Errorf("Expected G to be \"value\"")
}
}
func TestAfterNonCommand(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Cmd1 struct {
} `command:"remove"`
Cmd2 struct {
} `command:"add"`
}{}
assertParseFail(t, ErrUnknownCommand, "Unknown command `nocmd'. Please specify one command of: add or remove", &opts, "nocmd", "remove")
}
func TestSubcommandsOptional(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Cmd1 struct {
} `command:"remove"`
Cmd2 struct {
} `command:"add"`
}{}
p := NewParser(&opts, None)
p.SubcommandsOptional = true
_, err := p.ParseArgs([]string{"-v"})
if err != nil {
t.Fatalf("Unexpected error: %v", err)
return
}
if !opts.Value {
t.Errorf("Expected Value to be true")
}
}
func TestSubcommandsOptionalAfterNonCommand(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Cmd1 struct {
} `command:"remove"`
Cmd2 struct {
} `command:"add"`
}{}
p := NewParser(&opts, None)
p.SubcommandsOptional = true
retargs, err := p.ParseArgs([]string{"nocmd", "remove"})
if err != nil {
t.Fatalf("Unexpected error: %v", err)
return
}
assertStringArray(t, retargs, []string{"nocmd", "remove"})
}
func TestCommandAlias(t *testing.T) {
var opts = struct {
Command struct {
G string `short:"g" default:"value"`
} `command:"cmd" alias:"cm"`
}{}
assertParseSuccess(t, &opts, "cm")
if opts.Command.G != "value" {
t.Errorf("Expected G to be \"value\"")
}
}
func TestSubCommandFindOptionByLongFlag(t *testing.T) {
var opts struct {
Testing bool `long:"testing" description:"Testing"`
}
var cmd struct {
Other bool `long:"other" description:"Other"`
}
p := NewParser(&opts, Default)
c, _ := p.AddCommand("command", "Short", "Long", &cmd)
opt := c.FindOptionByLongName("other")
if opt == nil {
t.Errorf("Expected option, but found none")
}
assertString(t, opt.LongName, "other")
opt = c.FindOptionByLongName("testing")
if opt == nil {
t.Errorf("Expected option, but found none")
}
assertString(t, opt.LongName, "testing")
}
func TestSubCommandFindOptionByShortFlag(t *testing.T) {
var opts struct {
Testing bool `short:"t" description:"Testing"`
}
var cmd struct {
Other bool `short:"o" description:"Other"`
}
p := NewParser(&opts, Default)
c, _ := p.AddCommand("command", "Short", "Long", &cmd)
opt := c.FindOptionByShortName('o')
if opt == nil {
t.Errorf("Expected option, but found none")
}
if opt.ShortName != 'o' {
t.Errorf("Expected 'o', but got %v", opt.ShortName)
}
opt = c.FindOptionByShortName('t')
if opt == nil {
t.Errorf("Expected option, but found none")
}
if opt.ShortName != 't' {
t.Errorf("Expected 'o', but got %v", opt.ShortName)
}
}

309
vendor/github.com/jessevdk/go-flags/completion.go generated vendored Normal file
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@ -0,0 +1,309 @@
package flags
import (
"fmt"
"path/filepath"
"reflect"
"sort"
"strings"
"unicode/utf8"
)
// Completion is a type containing information of a completion.
type Completion struct {
// The completed item
Item string
// A description of the completed item (optional)
Description string
}
type completions []Completion
func (c completions) Len() int {
return len(c)
}
func (c completions) Less(i, j int) bool {
return c[i].Item < c[j].Item
}
func (c completions) Swap(i, j int) {
c[i], c[j] = c[j], c[i]
}
// Completer is an interface which can be implemented by types
// to provide custom command line argument completion.
type Completer interface {
// Complete receives a prefix representing a (partial) value
// for its type and should provide a list of possible valid
// completions.
Complete(match string) []Completion
}
type completion struct {
parser *Parser
}
// Filename is a string alias which provides filename completion.
type Filename string
func completionsWithoutDescriptions(items []string) []Completion {
ret := make([]Completion, len(items))
for i, v := range items {
ret[i].Item = v
}
return ret
}
// Complete returns a list of existing files with the given
// prefix.
func (f *Filename) Complete(match string) []Completion {
ret, _ := filepath.Glob(match + "*")
return completionsWithoutDescriptions(ret)
}
func (c *completion) skipPositional(s *parseState, n int) {
if n >= len(s.positional) {
s.positional = nil
} else {
s.positional = s.positional[n:]
}
}
func (c *completion) completeOptionNames(s *parseState, prefix string, match string, short bool) []Completion {
if short && len(match) != 0 {
return []Completion{
Completion{
Item: prefix + match,
},
}
}
var results []Completion
repeats := map[string]bool{}
for name, opt := range s.lookup.longNames {
if strings.HasPrefix(name, match) && !opt.Hidden {
results = append(results, Completion{
Item: defaultLongOptDelimiter + name,
Description: opt.Description,
})
if short {
repeats[string(opt.ShortName)] = true
}
}
}
if short {
for name, opt := range s.lookup.shortNames {
if _, exist := repeats[name]; !exist && strings.HasPrefix(name, match) && !opt.Hidden {
results = append(results, Completion{
Item: string(defaultShortOptDelimiter) + name,
Description: opt.Description,
})
}
}
}
return results
}
func (c *completion) completeNamesForLongPrefix(s *parseState, prefix string, match string) []Completion {
return c.completeOptionNames(s, prefix, match, false)
}
func (c *completion) completeNamesForShortPrefix(s *parseState, prefix string, match string) []Completion {
return c.completeOptionNames(s, prefix, match, true)
}
func (c *completion) completeCommands(s *parseState, match string) []Completion {
n := make([]Completion, 0, len(s.command.commands))
for _, cmd := range s.command.commands {
if cmd.data != c && strings.HasPrefix(cmd.Name, match) {
n = append(n, Completion{
Item: cmd.Name,
Description: cmd.ShortDescription,
})
}
}
return n
}
func (c *completion) completeValue(value reflect.Value, prefix string, match string) []Completion {
if value.Kind() == reflect.Slice {
value = reflect.New(value.Type().Elem())
}
i := value.Interface()
var ret []Completion
if cmp, ok := i.(Completer); ok {
ret = cmp.Complete(match)
} else if value.CanAddr() {
if cmp, ok = value.Addr().Interface().(Completer); ok {
ret = cmp.Complete(match)
}
}
for i, v := range ret {
ret[i].Item = prefix + v.Item
}
return ret
}
func (c *completion) complete(args []string) []Completion {
if len(args) == 0 {
args = []string{""}
}
s := &parseState{
args: args,
}
c.parser.fillParseState(s)
var opt *Option
for len(s.args) > 1 {
arg := s.pop()
if (c.parser.Options&PassDoubleDash) != None && arg == "--" {
opt = nil
c.skipPositional(s, len(s.args)-1)
break
}
if argumentIsOption(arg) {
prefix, optname, islong := stripOptionPrefix(arg)
optname, _, argument := splitOption(prefix, optname, islong)
if argument == nil {
var o *Option
canarg := true
if islong {
o = s.lookup.longNames[optname]
} else {
for i, r := range optname {
sname := string(r)
o = s.lookup.shortNames[sname]
if o == nil {
break
}
if i == 0 && o.canArgument() && len(optname) != len(sname) {
canarg = false
break
}
}
}
if o == nil && (c.parser.Options&PassAfterNonOption) != None {
opt = nil
c.skipPositional(s, len(s.args)-1)
break
} else if o != nil && o.canArgument() && !o.OptionalArgument && canarg {
if len(s.args) > 1 {
s.pop()
} else {
opt = o
}
}
}
} else {
if len(s.positional) > 0 {
if !s.positional[0].isRemaining() {
// Don't advance beyond a remaining positional arg (because
// it consumes all subsequent args).
s.positional = s.positional[1:]
}
} else if cmd, ok := s.lookup.commands[arg]; ok {
cmd.fillParseState(s)
}
opt = nil
}
}
lastarg := s.args[len(s.args)-1]
var ret []Completion
if opt != nil {
// Completion for the argument of 'opt'
ret = c.completeValue(opt.value, "", lastarg)
} else if argumentStartsOption(lastarg) {
// Complete the option
prefix, optname, islong := stripOptionPrefix(lastarg)
optname, split, argument := splitOption(prefix, optname, islong)
if argument == nil && !islong {
rname, n := utf8.DecodeRuneInString(optname)
sname := string(rname)
if opt := s.lookup.shortNames[sname]; opt != nil && opt.canArgument() {
ret = c.completeValue(opt.value, prefix+sname, optname[n:])
} else {
ret = c.completeNamesForShortPrefix(s, prefix, optname)
}
} else if argument != nil {
if islong {
opt = s.lookup.longNames[optname]
} else {
opt = s.lookup.shortNames[optname]
}
if opt != nil {
ret = c.completeValue(opt.value, prefix+optname+split, *argument)
}
} else if islong {
ret = c.completeNamesForLongPrefix(s, prefix, optname)
} else {
ret = c.completeNamesForShortPrefix(s, prefix, optname)
}
} else if len(s.positional) > 0 {
// Complete for positional argument
ret = c.completeValue(s.positional[0].value, "", lastarg)
} else if len(s.command.commands) > 0 {
// Complete for command
ret = c.completeCommands(s, lastarg)
}
sort.Sort(completions(ret))
return ret
}
func (c *completion) print(items []Completion, showDescriptions bool) {
if showDescriptions && len(items) > 1 {
maxl := 0
for _, v := range items {
if len(v.Item) > maxl {
maxl = len(v.Item)
}
}
for _, v := range items {
fmt.Printf("%s", v.Item)
if len(v.Description) > 0 {
fmt.Printf("%s # %s", strings.Repeat(" ", maxl-len(v.Item)), v.Description)
}
fmt.Printf("\n")
}
} else {
for _, v := range items {
fmt.Println(v.Item)
}
}
}

315
vendor/github.com/jessevdk/go-flags/completion_test.go generated vendored Normal file
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@ -0,0 +1,315 @@
package flags
import (
"bytes"
"io"
"os"
"path"
"path/filepath"
"reflect"
"runtime"
"strings"
"testing"
)
type TestComplete struct {
}
func (t *TestComplete) Complete(match string) []Completion {
options := []string{
"hello world",
"hello universe",
"hello multiverse",
}
ret := make([]Completion, 0, len(options))
for _, o := range options {
if strings.HasPrefix(o, match) {
ret = append(ret, Completion{
Item: o,
})
}
}
return ret
}
var completionTestOptions struct {
Verbose bool `short:"v" long:"verbose" description:"Verbose messages"`
Debug bool `short:"d" long:"debug" description:"Enable debug"`
Info bool `short:"i" description:"Display info"`
Version bool `long:"version" description:"Show version"`
Required bool `long:"required" required:"true" description:"This is required"`
Hidden bool `long:"hidden" hidden:"true" description:"This is hidden"`
AddCommand struct {
Positional struct {
Filename Filename
} `positional-args:"yes"`
} `command:"add" description:"add an item"`
AddMultiCommand struct {
Positional struct {
Filename []Filename
} `positional-args:"yes"`
Extra []Filename `short:"f"`
} `command:"add-multi" description:"add multiple items"`
AddMultiCommandFlag struct {
Files []Filename `short:"f"`
} `command:"add-multi-flag" description:"add multiple items via flags"`
RemoveCommand struct {
Other bool `short:"o"`
File Filename `short:"f" long:"filename"`
} `command:"rm" description:"remove an item"`
RenameCommand struct {
Completed TestComplete `short:"c" long:"completed"`
} `command:"rename" description:"rename an item"`
}
type completionTest struct {
Args []string
Completed []string
ShowDescriptions bool
}
var completionTests []completionTest
func init() {
_, sourcefile, _, _ := runtime.Caller(0)
completionTestSourcedir := filepath.Join(filepath.SplitList(path.Dir(sourcefile))...)
completionTestFilename := []string{filepath.Join(completionTestSourcedir, "completion.go"), filepath.Join(completionTestSourcedir, "completion_test.go")}
completionTests = []completionTest{
{
// Short names
[]string{"-"},
[]string{"--debug", "--required", "--verbose", "--version", "-i"},
false,
},
{
// Short names full
[]string{"-i"},
[]string{"-i"},
false,
},
{
// Short names concatenated
[]string{"-dv"},
[]string{"-dv"},
false,
},
{
// Long names
[]string{"--"},
[]string{"--debug", "--required", "--verbose", "--version"},
false,
},
{
// Long names with descriptions
[]string{"--"},
[]string{
"--debug # Enable debug",
"--required # This is required",
"--verbose # Verbose messages",
"--version # Show version",
},
true,
},
{
// Long names partial
[]string{"--ver"},
[]string{"--verbose", "--version"},
false,
},
{
// Commands
[]string{""},
[]string{"add", "add-multi", "add-multi-flag", "rename", "rm"},
false,
},
{
// Commands with descriptions
[]string{""},
[]string{
"add # add an item",
"add-multi # add multiple items",
"add-multi-flag # add multiple items via flags",
"rename # rename an item",
"rm # remove an item",
},
true,
},
{
// Commands partial
[]string{"r"},
[]string{"rename", "rm"},
false,
},
{
// Positional filename
[]string{"add", filepath.Join(completionTestSourcedir, "completion")},
completionTestFilename,
false,
},
{
// Multiple positional filename (1 arg)
[]string{"add-multi", filepath.Join(completionTestSourcedir, "completion")},
completionTestFilename,
false,
},
{
// Multiple positional filename (2 args)
[]string{"add-multi", filepath.Join(completionTestSourcedir, "completion.go"), filepath.Join(completionTestSourcedir, "completion")},
completionTestFilename,
false,
},
{
// Multiple positional filename (3 args)
[]string{"add-multi", filepath.Join(completionTestSourcedir, "completion.go"), filepath.Join(completionTestSourcedir, "completion.go"), filepath.Join(completionTestSourcedir, "completion")},
completionTestFilename,
false,
},
{
// Flag filename
[]string{"rm", "-f", path.Join(completionTestSourcedir, "completion")},
completionTestFilename,
false,
},
{
// Flag short concat last filename
[]string{"rm", "-of", path.Join(completionTestSourcedir, "completion")},
completionTestFilename,
false,
},
{
// Flag concat filename
[]string{"rm", "-f" + path.Join(completionTestSourcedir, "completion")},
[]string{"-f" + completionTestFilename[0], "-f" + completionTestFilename[1]},
false,
},
{
// Flag equal concat filename
[]string{"rm", "-f=" + path.Join(completionTestSourcedir, "completion")},
[]string{"-f=" + completionTestFilename[0], "-f=" + completionTestFilename[1]},
false,
},
{
// Flag concat long filename
[]string{"rm", "--filename=" + path.Join(completionTestSourcedir, "completion")},
[]string{"--filename=" + completionTestFilename[0], "--filename=" + completionTestFilename[1]},
false,
},
{
// Flag long filename
[]string{"rm", "--filename", path.Join(completionTestSourcedir, "completion")},
completionTestFilename,
false,
},
{
// Custom completed
[]string{"rename", "-c", "hello un"},
[]string{"hello universe"},
false,
},
{
// Multiple flag filename
[]string{"add-multi-flag", "-f", filepath.Join(completionTestSourcedir, "completion")},
completionTestFilename,
false,
},
}
}
func TestCompletion(t *testing.T) {
p := NewParser(&completionTestOptions, Default)
c := &completion{parser: p}
for _, test := range completionTests {
if test.ShowDescriptions {
continue
}
ret := c.complete(test.Args)
items := make([]string, len(ret))
for i, v := range ret {
items[i] = v.Item
}
if !reflect.DeepEqual(items, test.Completed) {
t.Errorf("Args: %#v, %#v\n Expected: %#v\n Got: %#v", test.Args, test.ShowDescriptions, test.Completed, items)
}
}
}
func TestParserCompletion(t *testing.T) {
for _, test := range completionTests {
if test.ShowDescriptions {
os.Setenv("GO_FLAGS_COMPLETION", "verbose")
} else {
os.Setenv("GO_FLAGS_COMPLETION", "1")
}
tmp := os.Stdout
r, w, _ := os.Pipe()
os.Stdout = w
out := make(chan string)
go func() {
var buf bytes.Buffer
io.Copy(&buf, r)
out <- buf.String()
}()
p := NewParser(&completionTestOptions, None)
p.CompletionHandler = func(items []Completion) {
comp := &completion{parser: p}
comp.print(items, test.ShowDescriptions)
}
_, err := p.ParseArgs(test.Args)
w.Close()
os.Stdout = tmp
if err != nil {
t.Fatalf("Unexpected error: %s", err)
}
got := strings.Split(strings.Trim(<-out, "\n"), "\n")
if !reflect.DeepEqual(got, test.Completed) {
t.Errorf("Expected: %#v\nGot: %#v", test.Completed, got)
}
}
os.Setenv("GO_FLAGS_COMPLETION", "")
}

348
vendor/github.com/jessevdk/go-flags/convert.go generated vendored Normal file
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@ -0,0 +1,348 @@
// Copyright 2012 Jesse van den Kieboom. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package flags
import (
"fmt"
"reflect"
"strconv"
"strings"
"time"
)
// Marshaler is the interface implemented by types that can marshal themselves
// to a string representation of the flag.
type Marshaler interface {
// MarshalFlag marshals a flag value to its string representation.
MarshalFlag() (string, error)
}
// Unmarshaler is the interface implemented by types that can unmarshal a flag
// argument to themselves. The provided value is directly passed from the
// command line.
type Unmarshaler interface {
// UnmarshalFlag unmarshals a string value representation to the flag
// value (which therefore needs to be a pointer receiver).
UnmarshalFlag(value string) error
}
func getBase(options multiTag, base int) (int, error) {
sbase := options.Get("base")
var err error
var ivbase int64
if sbase != "" {
ivbase, err = strconv.ParseInt(sbase, 10, 32)
base = int(ivbase)
}
return base, err
}
func convertMarshal(val reflect.Value) (bool, string, error) {
// Check first for the Marshaler interface
if val.Type().NumMethod() > 0 && val.CanInterface() {
if marshaler, ok := val.Interface().(Marshaler); ok {
ret, err := marshaler.MarshalFlag()
return true, ret, err
}
}
return false, "", nil
}
func convertToString(val reflect.Value, options multiTag) (string, error) {
if ok, ret, err := convertMarshal(val); ok {
return ret, err
}
tp := val.Type()
// Support for time.Duration
if tp == reflect.TypeOf((*time.Duration)(nil)).Elem() {
stringer := val.Interface().(fmt.Stringer)
return stringer.String(), nil
}
switch tp.Kind() {
case reflect.String:
return val.String(), nil
case reflect.Bool:
if val.Bool() {
return "true", nil
}
return "false", nil
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
base, err := getBase(options, 10)
if err != nil {
return "", err
}
return strconv.FormatInt(val.Int(), base), nil
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
base, err := getBase(options, 10)
if err != nil {
return "", err
}
return strconv.FormatUint(val.Uint(), base), nil
case reflect.Float32, reflect.Float64:
return strconv.FormatFloat(val.Float(), 'g', -1, tp.Bits()), nil
case reflect.Slice:
if val.Len() == 0 {
return "", nil
}
ret := "["
for i := 0; i < val.Len(); i++ {
if i != 0 {
ret += ", "
}
item, err := convertToString(val.Index(i), options)
if err != nil {
return "", err
}
ret += item
}
return ret + "]", nil
case reflect.Map:
ret := "{"
for i, key := range val.MapKeys() {
if i != 0 {
ret += ", "
}
keyitem, err := convertToString(key, options)
if err != nil {
return "", err
}
item, err := convertToString(val.MapIndex(key), options)
if err != nil {
return "", err
}
ret += keyitem + ":" + item
}
return ret + "}", nil
case reflect.Ptr:
return convertToString(reflect.Indirect(val), options)
case reflect.Interface:
if !val.IsNil() {
return convertToString(val.Elem(), options)
}
}
return "", nil
}
func convertUnmarshal(val string, retval reflect.Value) (bool, error) {
if retval.Type().NumMethod() > 0 && retval.CanInterface() {
if unmarshaler, ok := retval.Interface().(Unmarshaler); ok {
if retval.IsNil() {
retval.Set(reflect.New(retval.Type().Elem()))
// Re-assign from the new value
unmarshaler = retval.Interface().(Unmarshaler)
}
return true, unmarshaler.UnmarshalFlag(val)
}
}
if retval.Type().Kind() != reflect.Ptr && retval.CanAddr() {
return convertUnmarshal(val, retval.Addr())
}
if retval.Type().Kind() == reflect.Interface && !retval.IsNil() {
return convertUnmarshal(val, retval.Elem())
}
return false, nil
}
func convert(val string, retval reflect.Value, options multiTag) error {
if ok, err := convertUnmarshal(val, retval); ok {
return err
}
tp := retval.Type()
// Support for time.Duration
if tp == reflect.TypeOf((*time.Duration)(nil)).Elem() {
parsed, err := time.ParseDuration(val)
if err != nil {
return err
}
retval.SetInt(int64(parsed))
return nil
}
switch tp.Kind() {
case reflect.String:
retval.SetString(val)
case reflect.Bool:
if val == "" {
retval.SetBool(true)
} else {
b, err := strconv.ParseBool(val)
if err != nil {
return err
}
retval.SetBool(b)
}
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
base, err := getBase(options, 10)
if err != nil {
return err
}
parsed, err := strconv.ParseInt(val, base, tp.Bits())
if err != nil {
return err
}
retval.SetInt(parsed)
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
base, err := getBase(options, 10)
if err != nil {
return err
}
parsed, err := strconv.ParseUint(val, base, tp.Bits())
if err != nil {
return err
}
retval.SetUint(parsed)
case reflect.Float32, reflect.Float64:
parsed, err := strconv.ParseFloat(val, tp.Bits())
if err != nil {
return err
}
retval.SetFloat(parsed)
case reflect.Slice:
elemtp := tp.Elem()
elemvalptr := reflect.New(elemtp)
elemval := reflect.Indirect(elemvalptr)
if err := convert(val, elemval, options); err != nil {
return err
}
retval.Set(reflect.Append(retval, elemval))
case reflect.Map:
parts := strings.SplitN(val, ":", 2)
key := parts[0]
var value string
if len(parts) == 2 {
value = parts[1]
}
keytp := tp.Key()
keyval := reflect.New(keytp)
if err := convert(key, keyval, options); err != nil {
return err
}
valuetp := tp.Elem()
valueval := reflect.New(valuetp)
if err := convert(value, valueval, options); err != nil {
return err
}
if retval.IsNil() {
retval.Set(reflect.MakeMap(tp))
}
retval.SetMapIndex(reflect.Indirect(keyval), reflect.Indirect(valueval))
case reflect.Ptr:
if retval.IsNil() {
retval.Set(reflect.New(retval.Type().Elem()))
}
return convert(val, reflect.Indirect(retval), options)
case reflect.Interface:
if !retval.IsNil() {
return convert(val, retval.Elem(), options)
}
}
return nil
}
func isPrint(s string) bool {
for _, c := range s {
if !strconv.IsPrint(c) {
return false
}
}
return true
}
func quoteIfNeeded(s string) string {
if !isPrint(s) {
return strconv.Quote(s)
}
return s
}
func quoteIfNeededV(s []string) []string {
ret := make([]string, len(s))
for i, v := range s {
ret[i] = quoteIfNeeded(v)
}
return ret
}
func quoteV(s []string) []string {
ret := make([]string, len(s))
for i, v := range s {
ret[i] = strconv.Quote(v)
}
return ret
}
func unquoteIfPossible(s string) (string, error) {
if len(s) == 0 || s[0] != '"' {
return s, nil
}
return strconv.Unquote(s)
}

159
vendor/github.com/jessevdk/go-flags/convert_test.go generated vendored Normal file
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@ -0,0 +1,159 @@
package flags
import (
"testing"
"time"
)
func expectConvert(t *testing.T, o *Option, expected string) {
s, err := convertToString(o.value, o.tag)
if err != nil {
t.Errorf("Unexpected error: %v", err)
return
}
assertString(t, s, expected)
}
func TestConvertToString(t *testing.T) {
d, _ := time.ParseDuration("1h2m4s")
var opts = struct {
String string `long:"string"`
Int int `long:"int"`
Int8 int8 `long:"int8"`
Int16 int16 `long:"int16"`
Int32 int32 `long:"int32"`
Int64 int64 `long:"int64"`
Uint uint `long:"uint"`
Uint8 uint8 `long:"uint8"`
Uint16 uint16 `long:"uint16"`
Uint32 uint32 `long:"uint32"`
Uint64 uint64 `long:"uint64"`
Float32 float32 `long:"float32"`
Float64 float64 `long:"float64"`
Duration time.Duration `long:"duration"`
Bool bool `long:"bool"`
IntSlice []int `long:"int-slice"`
IntFloatMap map[int]float64 `long:"int-float-map"`
PtrBool *bool `long:"ptr-bool"`
Interface interface{} `long:"interface"`
Int32Base int32 `long:"int32-base" base:"16"`
Uint32Base uint32 `long:"uint32-base" base:"16"`
}{
"string",
-2,
-1,
0,
1,
2,
1,
2,
3,
4,
5,
1.2,
-3.4,
d,
true,
[]int{-3, 4, -2},
map[int]float64{-2: 4.5},
new(bool),
float32(5.2),
-5823,
4232,
}
p := NewNamedParser("test", Default)
grp, _ := p.AddGroup("test group", "", &opts)
expects := []string{
"string",
"-2",
"-1",
"0",
"1",
"2",
"1",
"2",
"3",
"4",
"5",
"1.2",
"-3.4",
"1h2m4s",
"true",
"[-3, 4, -2]",
"{-2:4.5}",
"false",
"5.2",
"-16bf",
"1088",
}
for i, v := range grp.Options() {
expectConvert(t, v, expects[i])
}
}
func TestConvertToStringInvalidIntBase(t *testing.T) {
var opts = struct {
Int int `long:"int" base:"no"`
}{
2,
}
p := NewNamedParser("test", Default)
grp, _ := p.AddGroup("test group", "", &opts)
o := grp.Options()[0]
_, err := convertToString(o.value, o.tag)
if err != nil {
err = newErrorf(ErrMarshal, "%v", err)
}
assertError(t, err, ErrMarshal, "strconv.ParseInt: parsing \"no\": invalid syntax")
}
func TestConvertToStringInvalidUintBase(t *testing.T) {
var opts = struct {
Uint uint `long:"uint" base:"no"`
}{
2,
}
p := NewNamedParser("test", Default)
grp, _ := p.AddGroup("test group", "", &opts)
o := grp.Options()[0]
_, err := convertToString(o.value, o.tag)
if err != nil {
err = newErrorf(ErrMarshal, "%v", err)
}
assertError(t, err, ErrMarshal, "strconv.ParseInt: parsing \"no\": invalid syntax")
}

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package flags
import (
"fmt"
)
// ErrorType represents the type of error.
type ErrorType uint
const (
// ErrUnknown indicates a generic error.
ErrUnknown ErrorType = iota
// ErrExpectedArgument indicates that an argument was expected.
ErrExpectedArgument
// ErrUnknownFlag indicates an unknown flag.
ErrUnknownFlag
// ErrUnknownGroup indicates an unknown group.
ErrUnknownGroup
// ErrMarshal indicates a marshalling error while converting values.
ErrMarshal
// ErrHelp indicates that the built-in help was shown (the error
// contains the help message).
ErrHelp
// ErrNoArgumentForBool indicates that an argument was given for a
// boolean flag (which don't not take any arguments).
ErrNoArgumentForBool
// ErrRequired indicates that a required flag was not provided.
ErrRequired
// ErrShortNameTooLong indicates that a short flag name was specified,
// longer than one character.
ErrShortNameTooLong
// ErrDuplicatedFlag indicates that a short or long flag has been
// defined more than once
ErrDuplicatedFlag
// ErrTag indicates an error while parsing flag tags.
ErrTag
// ErrCommandRequired indicates that a command was required but not
// specified
ErrCommandRequired
// ErrUnknownCommand indicates that an unknown command was specified.
ErrUnknownCommand
// ErrInvalidChoice indicates an invalid option value which only allows
// a certain number of choices.
ErrInvalidChoice
// ErrInvalidTag indicates an invalid tag or invalid use of an existing tag
ErrInvalidTag
)
func (e ErrorType) String() string {
switch e {
case ErrUnknown:
return "unknown"
case ErrExpectedArgument:
return "expected argument"
case ErrUnknownFlag:
return "unknown flag"
case ErrUnknownGroup:
return "unknown group"
case ErrMarshal:
return "marshal"
case ErrHelp:
return "help"
case ErrNoArgumentForBool:
return "no argument for bool"
case ErrRequired:
return "required"
case ErrShortNameTooLong:
return "short name too long"
case ErrDuplicatedFlag:
return "duplicated flag"
case ErrTag:
return "tag"
case ErrCommandRequired:
return "command required"
case ErrUnknownCommand:
return "unknown command"
case ErrInvalidChoice:
return "invalid choice"
case ErrInvalidTag:
return "invalid tag"
}
return "unrecognized error type"
}
// Error represents a parser error. The error returned from Parse is of this
// type. The error contains both a Type and Message.
type Error struct {
// The type of error
Type ErrorType
// The error message
Message string
}
// Error returns the error's message
func (e *Error) Error() string {
return e.Message
}
func newError(tp ErrorType, message string) *Error {
return &Error{
Type: tp,
Message: message,
}
}
func newErrorf(tp ErrorType, format string, args ...interface{}) *Error {
return newError(tp, fmt.Sprintf(format, args...))
}
func wrapError(err error) *Error {
ret, ok := err.(*Error)
if !ok {
return newError(ErrUnknown, err.Error())
}
return ret
}

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// Example of use of the flags package.
package flags
import (
"fmt"
"os/exec"
)
func Example() {
var opts struct {
// Slice of bool will append 'true' each time the option
// is encountered (can be set multiple times, like -vvv)
Verbose []bool `short:"v" long:"verbose" description:"Show verbose debug information"`
// Example of automatic marshalling to desired type (uint)
Offset uint `long:"offset" description:"Offset"`
// Example of a callback, called each time the option is found.
Call func(string) `short:"c" description:"Call phone number"`
// Example of a required flag
Name string `short:"n" long:"name" description:"A name" required:"true"`
// Example of a value name
File string `short:"f" long:"file" description:"A file" value-name:"FILE"`
// Example of a pointer
Ptr *int `short:"p" description:"A pointer to an integer"`
// Example of a slice of strings
StringSlice []string `short:"s" description:"A slice of strings"`
// Example of a slice of pointers
PtrSlice []*string `long:"ptrslice" description:"A slice of pointers to string"`
// Example of a map
IntMap map[string]int `long:"intmap" description:"A map from string to int"`
// Example of a filename (useful for completion)
Filename Filename `long:"filename" description:"A filename"`
// Example of positional arguments
Args struct {
ID string
Num int
Rest []string
} `positional-args:"yes" required:"yes"`
}
// Callback which will invoke callto:<argument> to call a number.
// Note that this works just on OS X (and probably only with
// Skype) but it shows the idea.
opts.Call = func(num string) {
cmd := exec.Command("open", "callto:"+num)
cmd.Start()
cmd.Process.Release()
}
// Make some fake arguments to parse.
args := []string{
"-vv",
"--offset=5",
"-n", "Me",
"-p", "3",
"-s", "hello",
"-s", "world",
"--ptrslice", "hello",
"--ptrslice", "world",
"--intmap", "a:1",
"--intmap", "b:5",
"--filename", "hello.go",
"id",
"10",
"remaining1",
"remaining2",
}
// Parse flags from `args'. Note that here we use flags.ParseArgs for
// the sake of making a working example. Normally, you would simply use
// flags.Parse(&opts) which uses os.Args
_, err := ParseArgs(&opts, args)
if err != nil {
panic(err)
}
fmt.Printf("Verbosity: %v\n", opts.Verbose)
fmt.Printf("Offset: %d\n", opts.Offset)
fmt.Printf("Name: %s\n", opts.Name)
fmt.Printf("Ptr: %d\n", *opts.Ptr)
fmt.Printf("StringSlice: %v\n", opts.StringSlice)
fmt.Printf("PtrSlice: [%v %v]\n", *opts.PtrSlice[0], *opts.PtrSlice[1])
fmt.Printf("IntMap: [a:%v b:%v]\n", opts.IntMap["a"], opts.IntMap["b"])
fmt.Printf("Filename: %v\n", opts.Filename)
fmt.Printf("Args.ID: %s\n", opts.Args.ID)
fmt.Printf("Args.Num: %d\n", opts.Args.Num)
fmt.Printf("Args.Rest: %v\n", opts.Args.Rest)
// Output: Verbosity: [true true]
// Offset: 5
// Name: Me
// Ptr: 3
// StringSlice: [hello world]
// PtrSlice: [hello world]
// IntMap: [a:1 b:5]
// Filename: hello.go
// Args.ID: id
// Args.Num: 10
// Args.Rest: [remaining1 remaining2]
}

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package main
import (
"fmt"
)
type AddCommand struct {
All bool `short:"a" long:"all" description:"Add all files"`
}
var addCommand AddCommand
func (x *AddCommand) Execute(args []string) error {
fmt.Printf("Adding (all=%v): %#v\n", x.All, args)
return nil
}
func init() {
parser.AddCommand("add",
"Add a file",
"The add command adds a file to the repository. Use -a to add all files.",
&addCommand)
}

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_examples() {
args=("${COMP_WORDS[@]:1:$COMP_CWORD}")
local IFS=$'\n'
COMPREPLY=($(GO_FLAGS_COMPLETION=1 ${COMP_WORDS[0]} "${args[@]}"))
return 1
}
complete -F _examples examples

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package main
import (
"errors"
"fmt"
"github.com/jessevdk/go-flags"
"os"
"strconv"
"strings"
)
type EditorOptions struct {
Input flags.Filename `short:"i" long:"input" description:"Input file" default:"-"`
Output flags.Filename `short:"o" long:"output" description:"Output file" default:"-"`
}
type Point struct {
X, Y int
}
func (p *Point) UnmarshalFlag(value string) error {
parts := strings.Split(value, ",")
if len(parts) != 2 {
return errors.New("expected two numbers separated by a ,")
}
x, err := strconv.ParseInt(parts[0], 10, 32)
if err != nil {
return err
}
y, err := strconv.ParseInt(parts[1], 10, 32)
if err != nil {
return err
}
p.X = int(x)
p.Y = int(y)
return nil
}
func (p Point) MarshalFlag() (string, error) {
return fmt.Sprintf("%d,%d", p.X, p.Y), nil
}
type Options struct {
// Example of verbosity with level
Verbose []bool `short:"v" long:"verbose" description:"Verbose output"`
// Example of optional value
User string `short:"u" long:"user" description:"User name" optional:"yes" optional-value:"pancake"`
// Example of map with multiple default values
Users map[string]string `long:"users" description:"User e-mail map" default:"system:system@example.org" default:"admin:admin@example.org"`
// Example of option group
Editor EditorOptions `group:"Editor Options"`
// Example of custom type Marshal/Unmarshal
Point Point `long:"point" description:"A x,y point" default:"1,2"`
}
var options Options
var parser = flags.NewParser(&options, flags.Default)
func main() {
if _, err := parser.Parse(); err != nil {
if flagsErr, ok := err.(*flags.Error); ok && flagsErr.Type == flags.ErrHelp {
os.Exit(0)
} else {
os.Exit(1)
}
}
}

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package main
import (
"fmt"
)
type RmCommand struct {
Force bool `short:"f" long:"force" description:"Force removal of files"`
}
var rmCommand RmCommand
func (x *RmCommand) Execute(args []string) error {
fmt.Printf("Removing (force=%v): %#v\n", x.Force, args)
return nil
}
func init() {
parser.AddCommand("rm",
"Remove a file",
"The rm command removes a file to the repository. Use -f to force removal of files.",
&rmCommand)
}

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// Copyright 2012 Jesse van den Kieboom. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
/*
Package flags provides an extensive command line option parser.
The flags package is similar in functionality to the go built-in flag package
but provides more options and uses reflection to provide a convenient and
succinct way of specifying command line options.
Supported features
The following features are supported in go-flags:
Options with short names (-v)
Options with long names (--verbose)
Options with and without arguments (bool v.s. other type)
Options with optional arguments and default values
Option default values from ENVIRONMENT_VARIABLES, including slice and map values
Multiple option groups each containing a set of options
Generate and print well-formatted help message
Passing remaining command line arguments after -- (optional)
Ignoring unknown command line options (optional)
Supports -I/usr/include -I=/usr/include -I /usr/include option argument specification
Supports multiple short options -aux
Supports all primitive go types (string, int{8..64}, uint{8..64}, float)
Supports same option multiple times (can store in slice or last option counts)
Supports maps
Supports function callbacks
Supports namespaces for (nested) option groups
Additional features specific to Windows:
Options with short names (/v)
Options with long names (/verbose)
Windows-style options with arguments use a colon as the delimiter
Modify generated help message with Windows-style / options
Windows style options can be disabled at build time using the "forceposix"
build tag
Basic usage
The flags package uses structs, reflection and struct field tags
to allow users to specify command line options. This results in very simple
and concise specification of your application options. For example:
type Options struct {
Verbose []bool `short:"v" long:"verbose" description:"Show verbose debug information"`
}
This specifies one option with a short name -v and a long name --verbose.
When either -v or --verbose is found on the command line, a 'true' value
will be appended to the Verbose field. e.g. when specifying -vvv, the
resulting value of Verbose will be {[true, true, true]}.
Slice options work exactly the same as primitive type options, except that
whenever the option is encountered, a value is appended to the slice.
Map options from string to primitive type are also supported. On the command
line, you specify the value for such an option as key:value. For example
type Options struct {
AuthorInfo string[string] `short:"a"`
}
Then, the AuthorInfo map can be filled with something like
-a name:Jesse -a "surname:van den Kieboom".
Finally, for full control over the conversion between command line argument
values and options, user defined types can choose to implement the Marshaler
and Unmarshaler interfaces.
Available field tags
The following is a list of tags for struct fields supported by go-flags:
short: the short name of the option (single character)
long: the long name of the option
required: if non empty, makes the option required to appear on the command
line. If a required option is not present, the parser will
return ErrRequired (optional)
description: the description of the option (optional)
long-description: the long description of the option. Currently only
displayed in generated man pages (optional)
no-flag: if non-empty, this field is ignored as an option (optional)
optional: if non-empty, makes the argument of the option optional. When an
argument is optional it can only be specified using
--option=argument (optional)
optional-value: the value of an optional option when the option occurs
without an argument. This tag can be specified multiple
times in the case of maps or slices (optional)
default: the default value of an option. This tag can be specified
multiple times in the case of slices or maps (optional)
default-mask: when specified, this value will be displayed in the help
instead of the actual default value. This is useful
mostly for hiding otherwise sensitive information from
showing up in the help. If default-mask takes the special
value "-", then no default value will be shown at all
(optional)
env: the default value of the option is overridden from the
specified environment variable, if one has been defined.
(optional)
env-delim: the 'env' default value from environment is split into
multiple values with the given delimiter string, use with
slices and maps (optional)
value-name: the name of the argument value (to be shown in the help)
(optional)
choice: limits the values for an option to a set of values.
This tag can be specified multiple times (optional)
hidden: if non-empty, the option is not visible in the help or man page.
base: a base (radix) used to convert strings to integer values, the
default base is 10 (i.e. decimal) (optional)
ini-name: the explicit ini option name (optional)
no-ini: if non-empty this field is ignored as an ini option
(optional)
group: when specified on a struct field, makes the struct
field a separate group with the given name (optional)
namespace: when specified on a group struct field, the namespace
gets prepended to every option's long name and
subgroup's namespace of this group, separated by
the parser's namespace delimiter (optional)
command: when specified on a struct field, makes the struct
field a (sub)command with the given name (optional)
subcommands-optional: when specified on a command struct field, makes
any subcommands of that command optional (optional)
alias: when specified on a command struct field, adds the
specified name as an alias for the command. Can be
be specified multiple times to add more than one
alias (optional)
positional-args: when specified on a field with a struct type,
uses the fields of that struct to parse remaining
positional command line arguments into (in order
of the fields). If a field has a slice type,
then all remaining arguments will be added to it.
Positional arguments are optional by default,
unless the "required" tag is specified together
with the "positional-args" tag. The "required" tag
can also be set on the individual rest argument
fields, to require only the first N positional
arguments. If the "required" tag is set on the
rest arguments slice, then its value determines
the minimum amount of rest arguments that needs to
be provided (e.g. `required:"2"`) (optional)
positional-arg-name: used on a field in a positional argument struct; name
of the positional argument placeholder to be shown in
the help (optional)
Either the `short:` tag or the `long:` must be specified to make the field eligible as an
option.
Option groups
Option groups are a simple way to semantically separate your options. All
options in a particular group are shown together in the help under the name
of the group. Namespaces can be used to specify option long names more
precisely and emphasize the options affiliation to their group.
There are currently three ways to specify option groups.
1. Use NewNamedParser specifying the various option groups.
2. Use AddGroup to add a group to an existing parser.
3. Add a struct field to the top-level options annotated with the
group:"group-name" tag.
Commands
The flags package also has basic support for commands. Commands are often
used in monolithic applications that support various commands or actions.
Take git for example, all of the add, commit, checkout, etc. are called
commands. Using commands you can easily separate multiple functions of your
application.
There are currently two ways to specify a command.
1. Use AddCommand on an existing parser.
2. Add a struct field to your options struct annotated with the
command:"command-name" tag.
The most common, idiomatic way to implement commands is to define a global
parser instance and implement each command in a separate file. These
command files should define a go init function which calls AddCommand on
the global parser.
When parsing ends and there is an active command and that command implements
the Commander interface, then its Execute method will be run with the
remaining command line arguments.
Command structs can have options which become valid to parse after the
command has been specified on the command line, in addition to the options
of all the parent commands. I.e. considering a -v flag on the parser and an
add command, the following are equivalent:
./app -v add
./app add -v
However, if the -v flag is defined on the add command, then the first of
the two examples above would fail since the -v flag is not defined before
the add command.
Completion
go-flags has builtin support to provide bash completion of flags, commands
and argument values. To use completion, the binary which uses go-flags
can be invoked in a special environment to list completion of the current
command line argument. It should be noted that this `executes` your application,
and it is up to the user to make sure there are no negative side effects (for
example from init functions).
Setting the environment variable `GO_FLAGS_COMPLETION=1` enables completion
by replacing the argument parsing routine with the completion routine which
outputs completions for the passed arguments. The basic invocation to
complete a set of arguments is therefore:
GO_FLAGS_COMPLETION=1 ./completion-example arg1 arg2 arg3
where `completion-example` is the binary, `arg1` and `arg2` are
the current arguments, and `arg3` (the last argument) is the argument
to be completed. If the GO_FLAGS_COMPLETION is set to "verbose", then
descriptions of possible completion items will also be shown, if there
are more than 1 completion items.
To use this with bash completion, a simple file can be written which
calls the binary which supports go-flags completion:
_completion_example() {
# All arguments except the first one
args=("${COMP_WORDS[@]:1:$COMP_CWORD}")
# Only split on newlines
local IFS=$'\n'
# Call completion (note that the first element of COMP_WORDS is
# the executable itself)
COMPREPLY=($(GO_FLAGS_COMPLETION=1 ${COMP_WORDS[0]} "${args[@]}"))
return 0
}
complete -F _completion_example completion-example
Completion requires the parser option PassDoubleDash and is therefore enforced if the environment variable GO_FLAGS_COMPLETION is set.
Customized completion for argument values is supported by implementing
the flags.Completer interface for the argument value type. An example
of a type which does so is the flags.Filename type, an alias of string
allowing simple filename completion. A slice or array argument value
whose element type implements flags.Completer will also be completed.
*/
package flags

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// Copyright 2012 Jesse van den Kieboom. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package flags
import (
"errors"
"reflect"
"strings"
"unicode/utf8"
"unsafe"
)
// ErrNotPointerToStruct indicates that a provided data container is not
// a pointer to a struct. Only pointers to structs are valid data containers
// for options.
var ErrNotPointerToStruct = errors.New("provided data is not a pointer to struct")
// Group represents an option group. Option groups can be used to logically
// group options together under a description. Groups are only used to provide
// more structure to options both for the user (as displayed in the help message)
// and for you, since groups can be nested.
type Group struct {
// A short description of the group. The
// short description is primarily used in the built-in generated help
// message
ShortDescription string
// A long description of the group. The long
// description is primarily used to present information on commands
// (Command embeds Group) in the built-in generated help and man pages.
LongDescription string
// The namespace of the group
Namespace string
// If true, the group is not displayed in the help or man page
Hidden bool
// The parent of the group or nil if it has no parent
parent interface{}
// All the options in the group
options []*Option
// All the subgroups
groups []*Group
// Whether the group represents the built-in help group
isBuiltinHelp bool
data interface{}
}
type scanHandler func(reflect.Value, *reflect.StructField) (bool, error)
// AddGroup adds a new group to the command with the given name and data. The
// data needs to be a pointer to a struct from which the fields indicate which
// options are in the group.
func (g *Group) AddGroup(shortDescription string, longDescription string, data interface{}) (*Group, error) {
group := newGroup(shortDescription, longDescription, data)
group.parent = g
if err := group.scan(); err != nil {
return nil, err
}
g.groups = append(g.groups, group)
return group, nil
}
// Groups returns the list of groups embedded in this group.
func (g *Group) Groups() []*Group {
return g.groups
}
// Options returns the list of options in this group.
func (g *Group) Options() []*Option {
return g.options
}
// Find locates the subgroup with the given short description and returns it.
// If no such group can be found Find will return nil. Note that the description
// is matched case insensitively.
func (g *Group) Find(shortDescription string) *Group {
lshortDescription := strings.ToLower(shortDescription)
var ret *Group
g.eachGroup(func(gg *Group) {
if gg != g && strings.ToLower(gg.ShortDescription) == lshortDescription {
ret = gg
}
})
return ret
}
func (g *Group) findOption(matcher func(*Option) bool) (option *Option) {
g.eachGroup(func(g *Group) {
for _, opt := range g.options {
if option == nil && matcher(opt) {
option = opt
}
}
})
return option
}
// FindOptionByLongName finds an option that is part of the group, or any of its
// subgroups, by matching its long name (including the option namespace).
func (g *Group) FindOptionByLongName(longName string) *Option {
return g.findOption(func(option *Option) bool {
return option.LongNameWithNamespace() == longName
})
}
// FindOptionByShortName finds an option that is part of the group, or any of
// its subgroups, by matching its short name.
func (g *Group) FindOptionByShortName(shortName rune) *Option {
return g.findOption(func(option *Option) bool {
return option.ShortName == shortName
})
}
func newGroup(shortDescription string, longDescription string, data interface{}) *Group {
return &Group{
ShortDescription: shortDescription,
LongDescription: longDescription,
data: data,
}
}
func (g *Group) optionByName(name string, namematch func(*Option, string) bool) *Option {
prio := 0
var retopt *Option
g.eachGroup(func(g *Group) {
for _, opt := range g.options {
if namematch != nil && namematch(opt, name) && prio < 4 {
retopt = opt
prio = 4
}
if name == opt.field.Name && prio < 3 {
retopt = opt
prio = 3
}
if name == opt.LongNameWithNamespace() && prio < 2 {
retopt = opt
prio = 2
}
if opt.ShortName != 0 && name == string(opt.ShortName) && prio < 1 {
retopt = opt
prio = 1
}
}
})
return retopt
}
func (g *Group) eachGroup(f func(*Group)) {
f(g)
for _, gg := range g.groups {
gg.eachGroup(f)
}
}
func isStringFalsy(s string) bool {
return s == "" || s == "false" || s == "no" || s == "0"
}
func (g *Group) scanStruct(realval reflect.Value, sfield *reflect.StructField, handler scanHandler) error {
stype := realval.Type()
if sfield != nil {
if ok, err := handler(realval, sfield); err != nil {
return err
} else if ok {
return nil
}
}
for i := 0; i < stype.NumField(); i++ {
field := stype.Field(i)
// PkgName is set only for non-exported fields, which we ignore
if field.PkgPath != "" && !field.Anonymous {
continue
}
mtag := newMultiTag(string(field.Tag))
if err := mtag.Parse(); err != nil {
return err
}
// Skip fields with the no-flag tag
if mtag.Get("no-flag") != "" {
continue
}
// Dive deep into structs or pointers to structs
kind := field.Type.Kind()
fld := realval.Field(i)
if kind == reflect.Struct {
if err := g.scanStruct(fld, &field, handler); err != nil {
return err
}
} else if kind == reflect.Ptr && field.Type.Elem().Kind() == reflect.Struct {
flagCountBefore := len(g.options) + len(g.groups)
if fld.IsNil() {
fld = reflect.New(fld.Type().Elem())
}
if err := g.scanStruct(reflect.Indirect(fld), &field, handler); err != nil {
return err
}
if len(g.options)+len(g.groups) != flagCountBefore {
realval.Field(i).Set(fld)
}
}
longname := mtag.Get("long")
shortname := mtag.Get("short")
// Need at least either a short or long name
if longname == "" && shortname == "" && mtag.Get("ini-name") == "" {
continue
}
short := rune(0)
rc := utf8.RuneCountInString(shortname)
if rc > 1 {
return newErrorf(ErrShortNameTooLong,
"short names can only be 1 character long, not `%s'",
shortname)
} else if rc == 1 {
short, _ = utf8.DecodeRuneInString(shortname)
}
description := mtag.Get("description")
def := mtag.GetMany("default")
optionalValue := mtag.GetMany("optional-value")
valueName := mtag.Get("value-name")
defaultMask := mtag.Get("default-mask")
optional := !isStringFalsy(mtag.Get("optional"))
required := !isStringFalsy(mtag.Get("required"))
choices := mtag.GetMany("choice")
hidden := !isStringFalsy(mtag.Get("hidden"))
option := &Option{
Description: description,
ShortName: short,
LongName: longname,
Default: def,
EnvDefaultKey: mtag.Get("env"),
EnvDefaultDelim: mtag.Get("env-delim"),
OptionalArgument: optional,
OptionalValue: optionalValue,
Required: required,
ValueName: valueName,
DefaultMask: defaultMask,
Choices: choices,
Hidden: hidden,
group: g,
field: field,
value: realval.Field(i),
tag: mtag,
}
if option.isBool() && option.Default != nil {
return newErrorf(ErrInvalidTag,
"boolean flag `%s' may not have default values, they always default to `false' and can only be turned on",
option.shortAndLongName())
}
g.options = append(g.options, option)
}
return nil
}
func (g *Group) checkForDuplicateFlags() *Error {
shortNames := make(map[rune]*Option)
longNames := make(map[string]*Option)
var duplicateError *Error
g.eachGroup(func(g *Group) {
for _, option := range g.options {
if option.LongName != "" {
longName := option.LongNameWithNamespace()
if otherOption, ok := longNames[longName]; ok {
duplicateError = newErrorf(ErrDuplicatedFlag, "option `%s' uses the same long name as option `%s'", option, otherOption)
return
}
longNames[longName] = option
}
if option.ShortName != 0 {
if otherOption, ok := shortNames[option.ShortName]; ok {
duplicateError = newErrorf(ErrDuplicatedFlag, "option `%s' uses the same short name as option `%s'", option, otherOption)
return
}
shortNames[option.ShortName] = option
}
}
})
return duplicateError
}
func (g *Group) scanSubGroupHandler(realval reflect.Value, sfield *reflect.StructField) (bool, error) {
mtag := newMultiTag(string(sfield.Tag))
if err := mtag.Parse(); err != nil {
return true, err
}
subgroup := mtag.Get("group")
if len(subgroup) != 0 {
ptrval := reflect.NewAt(realval.Type(), unsafe.Pointer(realval.UnsafeAddr()))
description := mtag.Get("description")
group, err := g.AddGroup(subgroup, description, ptrval.Interface())
if err != nil {
return true, err
}
group.Namespace = mtag.Get("namespace")
group.Hidden = mtag.Get("hidden") != ""
return true, nil
}
return false, nil
}
func (g *Group) scanType(handler scanHandler) error {
// Get all the public fields in the data struct
ptrval := reflect.ValueOf(g.data)
if ptrval.Type().Kind() != reflect.Ptr {
panic(ErrNotPointerToStruct)
}
stype := ptrval.Type().Elem()
if stype.Kind() != reflect.Struct {
panic(ErrNotPointerToStruct)
}
realval := reflect.Indirect(ptrval)
if err := g.scanStruct(realval, nil, handler); err != nil {
return err
}
if err := g.checkForDuplicateFlags(); err != nil {
return err
}
return nil
}
func (g *Group) scan() error {
return g.scanType(g.scanSubGroupHandler)
}
func (g *Group) groupByName(name string) *Group {
if len(name) == 0 {
return g
}
return g.Find(name)
}

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vendor/github.com/jessevdk/go-flags/group_test.go generated vendored Normal file
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package flags
import (
"testing"
)
func TestGroupInline(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Group struct {
G bool `short:"g"`
} `group:"Grouped Options"`
}{}
p, ret := assertParserSuccess(t, &opts, "-v", "-g")
assertStringArray(t, ret, []string{})
if !opts.Value {
t.Errorf("Expected Value to be true")
}
if !opts.Group.G {
t.Errorf("Expected Group.G to be true")
}
if p.Command.Group.Find("Grouped Options") == nil {
t.Errorf("Expected to find group `Grouped Options'")
}
}
func TestGroupAdd(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
}{}
var grp = struct {
G bool `short:"g"`
}{}
p := NewParser(&opts, Default)
g, err := p.AddGroup("Grouped Options", "", &grp)
if err != nil {
t.Fatalf("Unexpected error: %v", err)
return
}
ret, err := p.ParseArgs([]string{"-v", "-g", "rest"})
if err != nil {
t.Fatalf("Unexpected error: %v", err)
return
}
assertStringArray(t, ret, []string{"rest"})
if !opts.Value {
t.Errorf("Expected Value to be true")
}
if !grp.G {
t.Errorf("Expected Group.G to be true")
}
if p.Command.Group.Find("Grouped Options") != g {
t.Errorf("Expected to find group `Grouped Options'")
}
if p.Groups()[1] != g {
t.Errorf("Expected group %#v, but got %#v", g, p.Groups()[0])
}
if g.Options()[0].ShortName != 'g' {
t.Errorf("Expected short name `g' but got %v", g.Options()[0].ShortName)
}
}
func TestGroupNestedInline(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Group struct {
G bool `short:"g"`
Nested struct {
N string `long:"n"`
} `group:"Nested Options"`
} `group:"Grouped Options"`
}{}
p, ret := assertParserSuccess(t, &opts, "-v", "-g", "--n", "n", "rest")
assertStringArray(t, ret, []string{"rest"})
if !opts.Value {
t.Errorf("Expected Value to be true")
}
if !opts.Group.G {
t.Errorf("Expected Group.G to be true")
}
assertString(t, opts.Group.Nested.N, "n")
if p.Command.Group.Find("Grouped Options") == nil {
t.Errorf("Expected to find group `Grouped Options'")
}
if p.Command.Group.Find("Nested Options") == nil {
t.Errorf("Expected to find group `Nested Options'")
}
}
func TestGroupNestedInlineNamespace(t *testing.T) {
var opts = struct {
Opt string `long:"opt"`
Group struct {
Opt string `long:"opt"`
Group struct {
Opt string `long:"opt"`
} `group:"Subsubgroup" namespace:"sap"`
} `group:"Subgroup" namespace:"sip"`
}{}
p, ret := assertParserSuccess(t, &opts, "--opt", "a", "--sip.opt", "b", "--sip.sap.opt", "c", "rest")
assertStringArray(t, ret, []string{"rest"})
assertString(t, opts.Opt, "a")
assertString(t, opts.Group.Opt, "b")
assertString(t, opts.Group.Group.Opt, "c")
for _, name := range []string{"Subgroup", "Subsubgroup"} {
if p.Command.Group.Find(name) == nil {
t.Errorf("Expected to find group '%s'", name)
}
}
}
func TestDuplicateShortFlags(t *testing.T) {
var opts struct {
Verbose []bool `short:"v" long:"verbose" description:"Show verbose debug information"`
Variables []string `short:"v" long:"variable" description:"Set a variable value."`
}
args := []string{
"--verbose",
"-v", "123",
"-v", "456",
}
_, err := ParseArgs(&opts, args)
if err == nil {
t.Errorf("Expected an error with type ErrDuplicatedFlag")
} else {
err2 := err.(*Error)
if err2.Type != ErrDuplicatedFlag {
t.Errorf("Expected an error with type ErrDuplicatedFlag")
}
}
}
func TestDuplicateLongFlags(t *testing.T) {
var opts struct {
Test1 []bool `short:"a" long:"testing" description:"Test 1"`
Test2 []string `short:"b" long:"testing" description:"Test 2."`
}
args := []string{
"--testing",
}
_, err := ParseArgs(&opts, args)
if err == nil {
t.Errorf("Expected an error with type ErrDuplicatedFlag")
} else {
err2 := err.(*Error)
if err2.Type != ErrDuplicatedFlag {
t.Errorf("Expected an error with type ErrDuplicatedFlag")
}
}
}
func TestFindOptionByLongFlag(t *testing.T) {
var opts struct {
Testing bool `long:"testing" description:"Testing"`
}
p := NewParser(&opts, Default)
opt := p.FindOptionByLongName("testing")
if opt == nil {
t.Errorf("Expected option, but found none")
}
assertString(t, opt.LongName, "testing")
}
func TestFindOptionByShortFlag(t *testing.T) {
var opts struct {
Testing bool `short:"t" description:"Testing"`
}
p := NewParser(&opts, Default)
opt := p.FindOptionByShortName('t')
if opt == nil {
t.Errorf("Expected option, but found none")
}
if opt.ShortName != 't' {
t.Errorf("Expected 't', but got %v", opt.ShortName)
}
}
func TestFindOptionByLongFlagInSubGroup(t *testing.T) {
var opts struct {
Group struct {
Testing bool `long:"testing" description:"Testing"`
} `group:"sub-group"`
}
p := NewParser(&opts, Default)
opt := p.FindOptionByLongName("testing")
if opt == nil {
t.Errorf("Expected option, but found none")
}
assertString(t, opt.LongName, "testing")
}
func TestFindOptionByShortFlagInSubGroup(t *testing.T) {
var opts struct {
Group struct {
Testing bool `short:"t" description:"Testing"`
} `group:"sub-group"`
}
p := NewParser(&opts, Default)
opt := p.FindOptionByShortName('t')
if opt == nil {
t.Errorf("Expected option, but found none")
}
if opt.ShortName != 't' {
t.Errorf("Expected 't', but got %v", opt.ShortName)
}
}

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// Copyright 2012 Jesse van den Kieboom. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package flags
import (
"bufio"
"bytes"
"fmt"
"io"
"runtime"
"strings"
"unicode/utf8"
)
type alignmentInfo struct {
maxLongLen int
hasShort bool
hasValueName bool
terminalColumns int
indent bool
}
const (
paddingBeforeOption = 2
distanceBetweenOptionAndDescription = 2
)
func (a *alignmentInfo) descriptionStart() int {
ret := a.maxLongLen + distanceBetweenOptionAndDescription
if a.hasShort {
ret += 2
}
if a.maxLongLen > 0 {
ret += 4
}
if a.hasValueName {
ret += 3
}
return ret
}
func (a *alignmentInfo) updateLen(name string, indent bool) {
l := utf8.RuneCountInString(name)
if indent {
l = l + 4
}
if l > a.maxLongLen {
a.maxLongLen = l
}
}
func (p *Parser) getAlignmentInfo() alignmentInfo {
ret := alignmentInfo{
maxLongLen: 0,
hasShort: false,
hasValueName: false,
terminalColumns: getTerminalColumns(),
}
if ret.terminalColumns <= 0 {
ret.terminalColumns = 80
}
var prevcmd *Command
p.eachActiveGroup(func(c *Command, grp *Group) {
if c != prevcmd {
for _, arg := range c.args {
ret.updateLen(arg.Name, c != p.Command)
}
}
for _, info := range grp.options {
if !info.canCli() {
continue
}
if info.ShortName != 0 {
ret.hasShort = true
}
if len(info.ValueName) > 0 {
ret.hasValueName = true
}
l := info.LongNameWithNamespace() + info.ValueName
if len(info.Choices) != 0 {
l += "[" + strings.Join(info.Choices, "|") + "]"
}
ret.updateLen(l, c != p.Command)
}
})
return ret
}
func wrapText(s string, l int, prefix string) string {
var ret string
if l < 10 {
l = 10
}
// Basic text wrapping of s at spaces to fit in l
lines := strings.Split(s, "\n")
for _, line := range lines {
var retline string
line = strings.TrimSpace(line)
for len(line) > l {
// Try to split on space
suffix := ""
pos := strings.LastIndex(line[:l], " ")
if pos < 0 {
pos = l - 1
suffix = "-\n"
}
if len(retline) != 0 {
retline += "\n" + prefix
}
retline += strings.TrimSpace(line[:pos]) + suffix
line = strings.TrimSpace(line[pos:])
}
if len(line) > 0 {
if len(retline) != 0 {
retline += "\n" + prefix
}
retline += line
}
if len(ret) > 0 {
ret += "\n"
if len(retline) > 0 {
ret += prefix
}
}
ret += retline
}
return ret
}
func (p *Parser) writeHelpOption(writer *bufio.Writer, option *Option, info alignmentInfo) {
line := &bytes.Buffer{}
prefix := paddingBeforeOption
if info.indent {
prefix += 4
}
if option.Hidden {
return
}
line.WriteString(strings.Repeat(" ", prefix))
if option.ShortName != 0 {
line.WriteRune(defaultShortOptDelimiter)
line.WriteRune(option.ShortName)
} else if info.hasShort {
line.WriteString(" ")
}
descstart := info.descriptionStart() + paddingBeforeOption
if len(option.LongName) > 0 {
if option.ShortName != 0 {
line.WriteString(", ")
} else if info.hasShort {
line.WriteString(" ")
}
line.WriteString(defaultLongOptDelimiter)
line.WriteString(option.LongNameWithNamespace())
}
if option.canArgument() {
line.WriteRune(defaultNameArgDelimiter)
if len(option.ValueName) > 0 {
line.WriteString(option.ValueName)
}
if len(option.Choices) > 0 {
line.WriteString("[" + strings.Join(option.Choices, "|") + "]")
}
}
written := line.Len()
line.WriteTo(writer)
if option.Description != "" {
dw := descstart - written
writer.WriteString(strings.Repeat(" ", dw))
var def string
if len(option.DefaultMask) != 0 {
if option.DefaultMask != "-" {
def = option.DefaultMask
}
} else {
def = option.defaultLiteral
}
var envDef string
if option.EnvDefaultKey != "" {
var envPrintable string
if runtime.GOOS == "windows" {
envPrintable = "%" + option.EnvDefaultKey + "%"
} else {
envPrintable = "$" + option.EnvDefaultKey
}
envDef = fmt.Sprintf(" [%s]", envPrintable)
}
var desc string
if def != "" {
desc = fmt.Sprintf("%s (default: %v)%s", option.Description, def, envDef)
} else {
desc = option.Description + envDef
}
writer.WriteString(wrapText(desc,
info.terminalColumns-descstart,
strings.Repeat(" ", descstart)))
}
writer.WriteString("\n")
}
func maxCommandLength(s []*Command) int {
if len(s) == 0 {
return 0
}
ret := len(s[0].Name)
for _, v := range s[1:] {
l := len(v.Name)
if l > ret {
ret = l
}
}
return ret
}
// WriteHelp writes a help message containing all the possible options and
// their descriptions to the provided writer. Note that the HelpFlag parser
// option provides a convenient way to add a -h/--help option group to the
// command line parser which will automatically show the help messages using
// this method.
func (p *Parser) WriteHelp(writer io.Writer) {
if writer == nil {
return
}
wr := bufio.NewWriter(writer)
aligninfo := p.getAlignmentInfo()
cmd := p.Command
for cmd.Active != nil {
cmd = cmd.Active
}
if p.Name != "" {
wr.WriteString("Usage:\n")
wr.WriteString(" ")
allcmd := p.Command
for allcmd != nil {
var usage string
if allcmd == p.Command {
if len(p.Usage) != 0 {
usage = p.Usage
} else if p.Options&HelpFlag != 0 {
usage = "[OPTIONS]"
}
} else if us, ok := allcmd.data.(Usage); ok {
usage = us.Usage()
} else if allcmd.hasCliOptions() {
usage = fmt.Sprintf("[%s-OPTIONS]", allcmd.Name)
}
if len(usage) != 0 {
fmt.Fprintf(wr, " %s %s", allcmd.Name, usage)
} else {
fmt.Fprintf(wr, " %s", allcmd.Name)
}
if len(allcmd.args) > 0 {
fmt.Fprintf(wr, " ")
}
for i, arg := range allcmd.args {
if i != 0 {
fmt.Fprintf(wr, " ")
}
name := arg.Name
if arg.isRemaining() {
name = name + "..."
}
if !allcmd.ArgsRequired {
fmt.Fprintf(wr, "[%s]", name)
} else {
fmt.Fprintf(wr, "%s", name)
}
}
if allcmd.Active == nil && len(allcmd.commands) > 0 {
var co, cc string
if allcmd.SubcommandsOptional {
co, cc = "[", "]"
} else {
co, cc = "<", ">"
}
visibleCommands := allcmd.visibleCommands()
if len(visibleCommands) > 3 {
fmt.Fprintf(wr, " %scommand%s", co, cc)
} else {
subcommands := allcmd.sortedVisibleCommands()
names := make([]string, len(subcommands))
for i, subc := range subcommands {
names[i] = subc.Name
}
fmt.Fprintf(wr, " %s%s%s", co, strings.Join(names, " | "), cc)
}
}
allcmd = allcmd.Active
}
fmt.Fprintln(wr)
if len(cmd.LongDescription) != 0 {
fmt.Fprintln(wr)
t := wrapText(cmd.LongDescription,
aligninfo.terminalColumns,
"")
fmt.Fprintln(wr, t)
}
}
c := p.Command
for c != nil {
printcmd := c != p.Command
c.eachGroup(func(grp *Group) {
first := true
// Skip built-in help group for all commands except the top-level
// parser
if grp.Hidden || (grp.isBuiltinHelp && c != p.Command) {
return
}
for _, info := range grp.options {
if !info.canCli() || info.Hidden {
continue
}
if printcmd {
fmt.Fprintf(wr, "\n[%s command options]\n", c.Name)
aligninfo.indent = true
printcmd = false
}
if first && cmd.Group != grp {
fmt.Fprintln(wr)
if aligninfo.indent {
wr.WriteString(" ")
}
fmt.Fprintf(wr, "%s:\n", grp.ShortDescription)
first = false
}
p.writeHelpOption(wr, info, aligninfo)
}
})
var args []*Arg
for _, arg := range c.args {
if arg.Description != "" {
args = append(args, arg)
}
}
if len(args) > 0 {
if c == p.Command {
fmt.Fprintf(wr, "\nArguments:\n")
} else {
fmt.Fprintf(wr, "\n[%s command arguments]\n", c.Name)
}
descStart := aligninfo.descriptionStart() + paddingBeforeOption
for _, arg := range args {
argPrefix := strings.Repeat(" ", paddingBeforeOption)
argPrefix += arg.Name
if len(arg.Description) > 0 {
argPrefix += ":"
wr.WriteString(argPrefix)
// Space between "arg:" and the description start
descPadding := strings.Repeat(" ", descStart-len(argPrefix))
// How much space the description gets before wrapping
descWidth := aligninfo.terminalColumns - 1 - descStart
// Whitespace to which we can indent new description lines
descPrefix := strings.Repeat(" ", descStart)
wr.WriteString(descPadding)
wr.WriteString(wrapText(arg.Description, descWidth, descPrefix))
} else {
wr.WriteString(argPrefix)
}
fmt.Fprintln(wr)
}
}
c = c.Active
}
scommands := cmd.sortedVisibleCommands()
if len(scommands) > 0 {
maxnamelen := maxCommandLength(scommands)
fmt.Fprintln(wr)
fmt.Fprintln(wr, "Available commands:")
for _, c := range scommands {
fmt.Fprintf(wr, " %s", c.Name)
if len(c.ShortDescription) > 0 {
pad := strings.Repeat(" ", maxnamelen-len(c.Name))
fmt.Fprintf(wr, "%s %s", pad, c.ShortDescription)
if len(c.Aliases) > 0 {
fmt.Fprintf(wr, " (aliases: %s)", strings.Join(c.Aliases, ", "))
}
}
fmt.Fprintln(wr)
}
}
wr.Flush()
}

538
vendor/github.com/jessevdk/go-flags/help_test.go generated vendored Normal file
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package flags
import (
"bufio"
"bytes"
"fmt"
"os"
"runtime"
"strings"
"testing"
"time"
)
type helpOptions struct {
Verbose []bool `short:"v" long:"verbose" description:"Show verbose debug information" ini-name:"verbose"`
Call func(string) `short:"c" description:"Call phone number" ini-name:"call"`
PtrSlice []*string `long:"ptrslice" description:"A slice of pointers to string"`
EmptyDescription bool `long:"empty-description"`
Default string `long:"default" default:"Some\nvalue" description:"Test default value"`
DefaultArray []string `long:"default-array" default:"Some value" default:"Other\tvalue" description:"Test default array value"`
DefaultMap map[string]string `long:"default-map" default:"some:value" default:"another:value" description:"Testdefault map value"`
EnvDefault1 string `long:"env-default1" default:"Some value" env:"ENV_DEFAULT" description:"Test env-default1 value"`
EnvDefault2 string `long:"env-default2" env:"ENV_DEFAULT" description:"Test env-default2 value"`
OptionWithArgName string `long:"opt-with-arg-name" value-name:"something" description:"Option with named argument"`
OptionWithChoices string `long:"opt-with-choices" value-name:"choice" choice:"dog" choice:"cat" description:"Option with choices"`
Hidden string `long:"hidden" description:"Hidden option" hidden:"yes"`
OnlyIni string `ini-name:"only-ini" description:"Option only available in ini"`
Other struct {
StringSlice []string `short:"s" default:"some" default:"value" description:"A slice of strings"`
IntMap map[string]int `long:"intmap" default:"a:1" description:"A map from string to int" ini-name:"int-map"`
} `group:"Other Options"`
HiddenGroup struct {
InsideHiddenGroup string `long:"inside-hidden-group" description:"Inside hidden group"`
} `group:"Hidden group" hidden:"yes"`
Group struct {
Opt string `long:"opt" description:"This is a subgroup option"`
HiddenInsideGroup string `long:"hidden-inside-group" description:"Hidden inside group" hidden:"yes"`
NotHiddenInsideGroup string `long:"not-hidden-inside-group" description:"Not hidden inside group" hidden:"false"`
Group struct {
Opt string `long:"opt" description:"This is a subsubgroup option"`
} `group:"Subsubgroup" namespace:"sap"`
} `group:"Subgroup" namespace:"sip"`
Command struct {
ExtraVerbose []bool `long:"extra-verbose" description:"Use for extra verbosity"`
} `command:"command" alias:"cm" alias:"cmd" description:"A command"`
HiddenCommand struct {
ExtraVerbose []bool `long:"extra-verbose" description:"Use for extra verbosity"`
} `command:"hidden-command" description:"A hidden command" hidden:"yes"`
Args struct {
Filename string `positional-arg-name:"filename" description:"A filename with a long description to trigger line wrapping"`
Number int `positional-arg-name:"num" description:"A number"`
HiddenInHelp float32 `positional-arg-name:"hidden-in-help" required:"yes"`
} `positional-args:"yes"`
}
func TestHelp(t *testing.T) {
oldEnv := EnvSnapshot()
defer oldEnv.Restore()
os.Setenv("ENV_DEFAULT", "env-def")
var opts helpOptions
p := NewNamedParser("TestHelp", HelpFlag)
p.AddGroup("Application Options", "The application options", &opts)
_, err := p.ParseArgs([]string{"--help"})
if err == nil {
t.Fatalf("Expected help error")
}
if e, ok := err.(*Error); !ok {
t.Fatalf("Expected flags.Error, but got %T", err)
} else {
if e.Type != ErrHelp {
t.Errorf("Expected flags.ErrHelp type, but got %s", e.Type)
}
var expected string
if runtime.GOOS == "windows" {
expected = `Usage:
TestHelp [OPTIONS] [filename] [num] [hidden-in-help] <command>
Application Options:
/v, /verbose Show verbose debug information
/c: Call phone number
/ptrslice: A slice of pointers to string
/empty-description
/default: Test default value (default:
"Some\nvalue")
/default-array: Test default array value (default:
Some value, "Other\tvalue")
/default-map: Testdefault map value (default:
some:value, another:value)
/env-default1: Test env-default1 value (default:
Some value) [%ENV_DEFAULT%]
/env-default2: Test env-default2 value
[%ENV_DEFAULT%]
/opt-with-arg-name:something Option with named argument
/opt-with-choices:choice[dog|cat] Option with choices
Other Options:
/s: A slice of strings (default: some,
value)
/intmap: A map from string to int (default:
a:1)
Subgroup:
/sip.opt: This is a subgroup option
/sip.not-hidden-inside-group: Not hidden inside group
Subsubgroup:
/sip.sap.opt: This is a subsubgroup option
Help Options:
/? Show this help message
/h, /help Show this help message
Arguments:
filename: A filename with a long description
to trigger line wrapping
num: A number
Available commands:
command A command (aliases: cm, cmd)
`
} else {
expected = `Usage:
TestHelp [OPTIONS] [filename] [num] [hidden-in-help] <command>
Application Options:
-v, --verbose Show verbose debug information
-c= Call phone number
--ptrslice= A slice of pointers to string
--empty-description
--default= Test default value (default:
"Some\nvalue")
--default-array= Test default array value (default:
Some value, "Other\tvalue")
--default-map= Testdefault map value (default:
some:value, another:value)
--env-default1= Test env-default1 value (default:
Some value) [$ENV_DEFAULT]
--env-default2= Test env-default2 value
[$ENV_DEFAULT]
--opt-with-arg-name=something Option with named argument
--opt-with-choices=choice[dog|cat] Option with choices
Other Options:
-s= A slice of strings (default: some,
value)
--intmap= A map from string to int (default:
a:1)
Subgroup:
--sip.opt= This is a subgroup option
--sip.not-hidden-inside-group= Not hidden inside group
Subsubgroup:
--sip.sap.opt= This is a subsubgroup option
Help Options:
-h, --help Show this help message
Arguments:
filename: A filename with a long description
to trigger line wrapping
num: A number
Available commands:
command A command (aliases: cm, cmd)
`
}
assertDiff(t, e.Message, expected, "help message")
}
}
func TestMan(t *testing.T) {
oldEnv := EnvSnapshot()
defer oldEnv.Restore()
os.Setenv("ENV_DEFAULT", "env-def")
var opts helpOptions
p := NewNamedParser("TestMan", HelpFlag)
p.ShortDescription = "Test manpage generation"
p.LongDescription = "This is a somewhat `longer' description of what this does"
p.AddGroup("Application Options", "The application options", &opts)
p.Commands()[0].LongDescription = "Longer `command' description"
var buf bytes.Buffer
p.WriteManPage(&buf)
got := buf.String()
tt := time.Now()
var envDefaultName string
if runtime.GOOS == "windows" {
envDefaultName = "%ENV_DEFAULT%"
} else {
envDefaultName = "$ENV_DEFAULT"
}
expected := fmt.Sprintf(`.TH TestMan 1 "%s"
.SH NAME
TestMan \- Test manpage generation
.SH SYNOPSIS
\fBTestMan\fP [OPTIONS]
.SH DESCRIPTION
This is a somewhat \fBlonger\fP description of what this does
.SH OPTIONS
.SS Application Options
The application options
.TP
\fB\fB\-v\fR, \fB\-\-verbose\fR\fP
Show verbose debug information
.TP
\fB\fB\-c\fR\fP
Call phone number
.TP
\fB\fB\-\-ptrslice\fR\fP
A slice of pointers to string
.TP
\fB\fB\-\-empty-description\fR\fP
.TP
\fB\fB\-\-default\fR <default: \fI"Some\\nvalue"\fR>\fP
Test default value
.TP
\fB\fB\-\-default-array\fR <default: \fI"Some value", "Other\\tvalue"\fR>\fP
Test default array value
.TP
\fB\fB\-\-default-map\fR <default: \fI"some:value", "another:value"\fR>\fP
Testdefault map value
.TP
\fB\fB\-\-env-default1\fR <default: \fI"Some value"\fR>\fP
Test env-default1 value
.TP
\fB\fB\-\-env-default2\fR <default: \fI%s\fR>\fP
Test env-default2 value
.TP
\fB\fB\-\-opt-with-arg-name\fR \fIsomething\fR\fP
Option with named argument
.TP
\fB\fB\-\-opt-with-choices\fR \fIchoice\fR\fP
Option with choices
.SS Other Options
.TP
\fB\fB\-s\fR <default: \fI"some", "value"\fR>\fP
A slice of strings
.TP
\fB\fB\-\-intmap\fR <default: \fI"a:1"\fR>\fP
A map from string to int
.SS Subgroup
.TP
\fB\fB\-\-sip.opt\fR\fP
This is a subgroup option
.TP
\fB\fB\-\-sip.not-hidden-inside-group\fR\fP
Not hidden inside group
.SS Subsubgroup
.TP
\fB\fB\-\-sip.sap.opt\fR\fP
This is a subsubgroup option
.SH COMMANDS
.SS command
A command
Longer \fBcommand\fP description
\fBUsage\fP: TestMan [OPTIONS] command [command-OPTIONS]
.TP
\fBAliases\fP: cm, cmd
.TP
\fB\fB\-\-extra-verbose\fR\fP
Use for extra verbosity
`, tt.Format("2 January 2006"), envDefaultName)
assertDiff(t, got, expected, "man page")
}
type helpCommandNoOptions struct {
Command struct {
} `command:"command" description:"A command"`
}
func TestHelpCommand(t *testing.T) {
oldEnv := EnvSnapshot()
defer oldEnv.Restore()
os.Setenv("ENV_DEFAULT", "env-def")
var opts helpCommandNoOptions
p := NewNamedParser("TestHelpCommand", HelpFlag)
p.AddGroup("Application Options", "The application options", &opts)
_, err := p.ParseArgs([]string{"command", "--help"})
if err == nil {
t.Fatalf("Expected help error")
}
if e, ok := err.(*Error); !ok {
t.Fatalf("Expected flags.Error, but got %T", err)
} else {
if e.Type != ErrHelp {
t.Errorf("Expected flags.ErrHelp type, but got %s", e.Type)
}
var expected string
if runtime.GOOS == "windows" {
expected = `Usage:
TestHelpCommand [OPTIONS] command
Help Options:
/? Show this help message
/h, /help Show this help message
`
} else {
expected = `Usage:
TestHelpCommand [OPTIONS] command
Help Options:
-h, --help Show this help message
`
}
assertDiff(t, e.Message, expected, "help message")
}
}
func TestHelpDefaults(t *testing.T) {
var expected string
if runtime.GOOS == "windows" {
expected = `Usage:
TestHelpDefaults [OPTIONS]
Application Options:
/with-default: With default (default: default-value)
/without-default: Without default
/with-programmatic-default: With programmatic default (default:
default-value)
Help Options:
/? Show this help message
/h, /help Show this help message
`
} else {
expected = `Usage:
TestHelpDefaults [OPTIONS]
Application Options:
--with-default= With default (default: default-value)
--without-default= Without default
--with-programmatic-default= With programmatic default (default:
default-value)
Help Options:
-h, --help Show this help message
`
}
tests := []struct {
Args []string
Output string
}{
{
Args: []string{"-h"},
Output: expected,
},
{
Args: []string{"--with-default", "other-value", "--with-programmatic-default", "other-value", "-h"},
Output: expected,
},
}
for _, test := range tests {
var opts struct {
WithDefault string `long:"with-default" default:"default-value" description:"With default"`
WithoutDefault string `long:"without-default" description:"Without default"`
WithProgrammaticDefault string `long:"with-programmatic-default" description:"With programmatic default"`
}
opts.WithProgrammaticDefault = "default-value"
p := NewNamedParser("TestHelpDefaults", HelpFlag)
p.AddGroup("Application Options", "The application options", &opts)
_, err := p.ParseArgs(test.Args)
if err == nil {
t.Fatalf("Expected help error")
}
if e, ok := err.(*Error); !ok {
t.Fatalf("Expected flags.Error, but got %T", err)
} else {
if e.Type != ErrHelp {
t.Errorf("Expected flags.ErrHelp type, but got %s", e.Type)
}
assertDiff(t, e.Message, test.Output, "help message")
}
}
}
func TestHelpRestArgs(t *testing.T) {
opts := struct {
Verbose bool `short:"v"`
}{}
p := NewNamedParser("TestHelpDefaults", HelpFlag)
p.AddGroup("Application Options", "The application options", &opts)
retargs, err := p.ParseArgs([]string{"-h", "-v", "rest"})
if err == nil {
t.Fatalf("Expected help error")
}
assertStringArray(t, retargs, []string{"-v", "rest"})
}
func TestWrapText(t *testing.T) {
s := "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."
got := wrapText(s, 60, " ")
expected := `Lorem ipsum dolor sit amet, consectetur adipisicing elit,
sed do eiusmod tempor incididunt ut labore et dolore magna
aliqua. Ut enim ad minim veniam, quis nostrud exercitation
ullamco laboris nisi ut aliquip ex ea commodo consequat.
Duis aute irure dolor in reprehenderit in voluptate velit
esse cillum dolore eu fugiat nulla pariatur. Excepteur sint
occaecat cupidatat non proident, sunt in culpa qui officia
deserunt mollit anim id est laborum.`
assertDiff(t, got, expected, "wrapped text")
}
func TestWrapParagraph(t *testing.T) {
s := "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.\n\n"
s += "Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.\n\n"
s += "Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.\n\n"
s += "Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.\n"
got := wrapText(s, 60, " ")
expected := `Lorem ipsum dolor sit amet, consectetur adipisicing elit,
sed do eiusmod tempor incididunt ut labore et dolore magna
aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco
laboris nisi ut aliquip ex ea commodo consequat.
Duis aute irure dolor in reprehenderit in voluptate velit
esse cillum dolore eu fugiat nulla pariatur.
Excepteur sint occaecat cupidatat non proident, sunt in
culpa qui officia deserunt mollit anim id est laborum.
`
assertDiff(t, got, expected, "wrapped paragraph")
}
func TestHelpDefaultMask(t *testing.T) {
var tests = []struct {
opts interface{}
present string
}{
{
opts: &struct {
Value string `short:"v" default:"123" description:"V"`
}{},
present: "V (default: 123)\n",
},
{
opts: &struct {
Value string `short:"v" default:"123" default-mask:"abc" description:"V"`
}{},
present: "V (default: abc)\n",
},
{
opts: &struct {
Value string `short:"v" default:"123" default-mask:"-" description:"V"`
}{},
present: "V\n",
},
{
opts: &struct {
Value string `short:"v" description:"V"`
}{Value: "123"},
present: "V (default: 123)\n",
},
{
opts: &struct {
Value string `short:"v" default-mask:"abc" description:"V"`
}{Value: "123"},
present: "V (default: abc)\n",
},
{
opts: &struct {
Value string `short:"v" default-mask:"-" description:"V"`
}{Value: "123"},
present: "V\n",
},
}
for _, test := range tests {
p := NewParser(test.opts, HelpFlag)
_, err := p.ParseArgs([]string{"-h"})
if flagsErr, ok := err.(*Error); ok && flagsErr.Type == ErrHelp {
err = nil
}
if err != nil {
t.Fatalf("Unexpected error: %v", err)
}
h := &bytes.Buffer{}
w := bufio.NewWriter(h)
p.writeHelpOption(w, p.FindOptionByShortName('v'), p.getAlignmentInfo())
w.Flush()
if strings.Index(h.String(), test.present) < 0 {
t.Errorf("Not present %q\n%s", test.present, h.String())
}
}
}

597
vendor/github.com/jessevdk/go-flags/ini.go generated vendored Normal file
View file

@ -0,0 +1,597 @@
package flags
import (
"bufio"
"fmt"
"io"
"os"
"reflect"
"sort"
"strconv"
"strings"
)
// IniError contains location information on where an error occurred.
type IniError struct {
// The error message.
Message string
// The filename of the file in which the error occurred.
File string
// The line number at which the error occurred.
LineNumber uint
}
// Error provides a "file:line: message" formatted message of the ini error.
func (x *IniError) Error() string {
return fmt.Sprintf(
"%s:%d: %s",
x.File,
x.LineNumber,
x.Message,
)
}
// IniOptions for writing
type IniOptions uint
const (
// IniNone indicates no options.
IniNone IniOptions = 0
// IniIncludeDefaults indicates that default values should be written.
IniIncludeDefaults = 1 << iota
// IniCommentDefaults indicates that if IniIncludeDefaults is used
// options with default values are written but commented out.
IniCommentDefaults
// IniIncludeComments indicates that comments containing the description
// of an option should be written.
IniIncludeComments
// IniDefault provides a default set of options.
IniDefault = IniIncludeComments
)
// IniParser is a utility to read and write flags options from and to ini
// formatted strings.
type IniParser struct {
ParseAsDefaults bool // override default flags
parser *Parser
}
type iniValue struct {
Name string
Value string
Quoted bool
LineNumber uint
}
type iniSection []iniValue
type ini struct {
File string
Sections map[string]iniSection
}
// NewIniParser creates a new ini parser for a given Parser.
func NewIniParser(p *Parser) *IniParser {
return &IniParser{
parser: p,
}
}
// IniParse is a convenience function to parse command line options with default
// settings from an ini formatted file. The provided data is a pointer to a struct
// representing the default option group (named "Application Options"). For
// more control, use flags.NewParser.
func IniParse(filename string, data interface{}) error {
p := NewParser(data, Default)
return NewIniParser(p).ParseFile(filename)
}
// ParseFile parses flags from an ini formatted file. See Parse for more
// information on the ini file format. The returned errors can be of the type
// flags.Error or flags.IniError.
func (i *IniParser) ParseFile(filename string) error {
ini, err := readIniFromFile(filename)
if err != nil {
return err
}
return i.parse(ini)
}
// Parse parses flags from an ini format. You can use ParseFile as a
// convenience function to parse from a filename instead of a general
// io.Reader.
//
// The format of the ini file is as follows:
//
// [Option group name]
// option = value
//
// Each section in the ini file represents an option group or command in the
// flags parser. The default flags parser option group (i.e. when using
// flags.Parse) is named 'Application Options'. The ini option name is matched
// in the following order:
//
// 1. Compared to the ini-name tag on the option struct field (if present)
// 2. Compared to the struct field name
// 3. Compared to the option long name (if present)
// 4. Compared to the option short name (if present)
//
// Sections for nested groups and commands can be addressed using a dot `.'
// namespacing notation (i.e [subcommand.Options]). Group section names are
// matched case insensitive.
//
// The returned errors can be of the type flags.Error or flags.IniError.
func (i *IniParser) Parse(reader io.Reader) error {
ini, err := readIni(reader, "")
if err != nil {
return err
}
return i.parse(ini)
}
// WriteFile writes the flags as ini format into a file. See Write
// for more information. The returned error occurs when the specified file
// could not be opened for writing.
func (i *IniParser) WriteFile(filename string, options IniOptions) error {
return writeIniToFile(i, filename, options)
}
// Write writes the current values of all the flags to an ini format.
// See Parse for more information on the ini file format. You typically
// call this only after settings have been parsed since the default values of each
// option are stored just before parsing the flags (this is only relevant when
// IniIncludeDefaults is _not_ set in options).
func (i *IniParser) Write(writer io.Writer, options IniOptions) {
writeIni(i, writer, options)
}
func readFullLine(reader *bufio.Reader) (string, error) {
var line []byte
for {
l, more, err := reader.ReadLine()
if err != nil {
return "", err
}
if line == nil && !more {
return string(l), nil
}
line = append(line, l...)
if !more {
break
}
}
return string(line), nil
}
func optionIniName(option *Option) string {
name := option.tag.Get("_read-ini-name")
if len(name) != 0 {
return name
}
name = option.tag.Get("ini-name")
if len(name) != 0 {
return name
}
return option.field.Name
}
func writeGroupIni(cmd *Command, group *Group, namespace string, writer io.Writer, options IniOptions) {
var sname string
if len(namespace) != 0 {
sname = namespace
}
if cmd.Group != group && len(group.ShortDescription) != 0 {
if len(sname) != 0 {
sname += "."
}
sname += group.ShortDescription
}
sectionwritten := false
comments := (options & IniIncludeComments) != IniNone
for _, option := range group.options {
if option.isFunc() || option.Hidden {
continue
}
if len(option.tag.Get("no-ini")) != 0 {
continue
}
val := option.value
if (options&IniIncludeDefaults) == IniNone && option.valueIsDefault() {
continue
}
if !sectionwritten {
fmt.Fprintf(writer, "[%s]\n", sname)
sectionwritten = true
}
if comments && len(option.Description) != 0 {
fmt.Fprintf(writer, "; %s\n", option.Description)
}
oname := optionIniName(option)
commentOption := (options&(IniIncludeDefaults|IniCommentDefaults)) == IniIncludeDefaults|IniCommentDefaults && option.valueIsDefault()
kind := val.Type().Kind()
switch kind {
case reflect.Slice:
kind = val.Type().Elem().Kind()
if val.Len() == 0 {
writeOption(writer, oname, kind, "", "", true, option.iniQuote)
} else {
for idx := 0; idx < val.Len(); idx++ {
v, _ := convertToString(val.Index(idx), option.tag)
writeOption(writer, oname, kind, "", v, commentOption, option.iniQuote)
}
}
case reflect.Map:
kind = val.Type().Elem().Kind()
if val.Len() == 0 {
writeOption(writer, oname, kind, "", "", true, option.iniQuote)
} else {
mkeys := val.MapKeys()
keys := make([]string, len(val.MapKeys()))
kkmap := make(map[string]reflect.Value)
for i, k := range mkeys {
keys[i], _ = convertToString(k, option.tag)
kkmap[keys[i]] = k
}
sort.Strings(keys)
for _, k := range keys {
v, _ := convertToString(val.MapIndex(kkmap[k]), option.tag)
writeOption(writer, oname, kind, k, v, commentOption, option.iniQuote)
}
}
default:
v, _ := convertToString(val, option.tag)
writeOption(writer, oname, kind, "", v, commentOption, option.iniQuote)
}
if comments {
fmt.Fprintln(writer)
}
}
if sectionwritten && !comments {
fmt.Fprintln(writer)
}
}
func writeOption(writer io.Writer, optionName string, optionType reflect.Kind, optionKey string, optionValue string, commentOption bool, forceQuote bool) {
if forceQuote || (optionType == reflect.String && !isPrint(optionValue)) {
optionValue = strconv.Quote(optionValue)
}
comment := ""
if commentOption {
comment = "; "
}
fmt.Fprintf(writer, "%s%s =", comment, optionName)
if optionKey != "" {
fmt.Fprintf(writer, " %s:%s", optionKey, optionValue)
} else if optionValue != "" {
fmt.Fprintf(writer, " %s", optionValue)
}
fmt.Fprintln(writer)
}
func writeCommandIni(command *Command, namespace string, writer io.Writer, options IniOptions) {
command.eachGroup(func(group *Group) {
if !group.Hidden {
writeGroupIni(command, group, namespace, writer, options)
}
})
for _, c := range command.commands {
var nns string
if c.Hidden {
continue
}
if len(namespace) != 0 {
nns = c.Name + "." + nns
} else {
nns = c.Name
}
writeCommandIni(c, nns, writer, options)
}
}
func writeIni(parser *IniParser, writer io.Writer, options IniOptions) {
writeCommandIni(parser.parser.Command, "", writer, options)
}
func writeIniToFile(parser *IniParser, filename string, options IniOptions) error {
file, err := os.Create(filename)
if err != nil {
return err
}
defer file.Close()
writeIni(parser, file, options)
return nil
}
func readIniFromFile(filename string) (*ini, error) {
file, err := os.Open(filename)
if err != nil {
return nil, err
}
defer file.Close()
return readIni(file, filename)
}
func readIni(contents io.Reader, filename string) (*ini, error) {
ret := &ini{
File: filename,
Sections: make(map[string]iniSection),
}
reader := bufio.NewReader(contents)
// Empty global section
section := make(iniSection, 0, 10)
sectionname := ""
ret.Sections[sectionname] = section
var lineno uint
for {
line, err := readFullLine(reader)
if err == io.EOF {
break
} else if err != nil {
return nil, err
}
lineno++
line = strings.TrimSpace(line)
// Skip empty lines and lines starting with ; (comments)
if len(line) == 0 || line[0] == ';' || line[0] == '#' {
continue
}
if line[0] == '[' {
if line[0] != '[' || line[len(line)-1] != ']' {
return nil, &IniError{
Message: "malformed section header",
File: filename,
LineNumber: lineno,
}
}
name := strings.TrimSpace(line[1 : len(line)-1])
if len(name) == 0 {
return nil, &IniError{
Message: "empty section name",
File: filename,
LineNumber: lineno,
}
}
sectionname = name
section = ret.Sections[name]
if section == nil {
section = make(iniSection, 0, 10)
ret.Sections[name] = section
}
continue
}
// Parse option here
keyval := strings.SplitN(line, "=", 2)
if len(keyval) != 2 {
return nil, &IniError{
Message: fmt.Sprintf("malformed key=value (%s)", line),
File: filename,
LineNumber: lineno,
}
}
name := strings.TrimSpace(keyval[0])
value := strings.TrimSpace(keyval[1])
quoted := false
if len(value) != 0 && value[0] == '"' {
if v, err := strconv.Unquote(value); err == nil {
value = v
quoted = true
} else {
return nil, &IniError{
Message: err.Error(),
File: filename,
LineNumber: lineno,
}
}
}
section = append(section, iniValue{
Name: name,
Value: value,
Quoted: quoted,
LineNumber: lineno,
})
ret.Sections[sectionname] = section
}
return ret, nil
}
func (i *IniParser) matchingGroups(name string) []*Group {
if len(name) == 0 {
var ret []*Group
i.parser.eachGroup(func(g *Group) {
ret = append(ret, g)
})
return ret
}
g := i.parser.groupByName(name)
if g != nil {
return []*Group{g}
}
return nil
}
func (i *IniParser) parse(ini *ini) error {
p := i.parser
var quotesLookup = make(map[*Option]bool)
for name, section := range ini.Sections {
groups := i.matchingGroups(name)
if len(groups) == 0 {
return newErrorf(ErrUnknownGroup, "could not find option group `%s'", name)
}
for _, inival := range section {
var opt *Option
for _, group := range groups {
opt = group.optionByName(inival.Name, func(o *Option, n string) bool {
return strings.ToLower(o.tag.Get("ini-name")) == strings.ToLower(n)
})
if opt != nil && len(opt.tag.Get("no-ini")) != 0 {
opt = nil
}
if opt != nil {
break
}
}
if opt == nil {
if (p.Options & IgnoreUnknown) == None {
return &IniError{
Message: fmt.Sprintf("unknown option: %s", inival.Name),
File: ini.File,
LineNumber: inival.LineNumber,
}
}
continue
}
// ini value is ignored if override is set and
// value was previously set from non default
if i.ParseAsDefaults && !opt.isSetDefault {
continue
}
pval := &inival.Value
if !opt.canArgument() && len(inival.Value) == 0 {
pval = nil
} else {
if opt.value.Type().Kind() == reflect.Map {
parts := strings.SplitN(inival.Value, ":", 2)
// only handle unquoting
if len(parts) == 2 && parts[1][0] == '"' {
if v, err := strconv.Unquote(parts[1]); err == nil {
parts[1] = v
inival.Quoted = true
} else {
return &IniError{
Message: err.Error(),
File: ini.File,
LineNumber: inival.LineNumber,
}
}
s := parts[0] + ":" + parts[1]
pval = &s
}
}
}
if err := opt.set(pval); err != nil {
return &IniError{
Message: err.Error(),
File: ini.File,
LineNumber: inival.LineNumber,
}
}
// either all INI values are quoted or only values who need quoting
if _, ok := quotesLookup[opt]; !inival.Quoted || !ok {
quotesLookup[opt] = inival.Quoted
}
opt.tag.Set("_read-ini-name", inival.Name)
}
}
for opt, quoted := range quotesLookup {
opt.iniQuote = quoted
}
return nil
}

1053
vendor/github.com/jessevdk/go-flags/ini_test.go generated vendored Normal file
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85
vendor/github.com/jessevdk/go-flags/long_test.go generated vendored Normal file
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@ -0,0 +1,85 @@
package flags
import (
"testing"
)
func TestLong(t *testing.T) {
var opts = struct {
Value bool `long:"value"`
}{}
ret := assertParseSuccess(t, &opts, "--value")
assertStringArray(t, ret, []string{})
if !opts.Value {
t.Errorf("Expected Value to be true")
}
}
func TestLongArg(t *testing.T) {
var opts = struct {
Value string `long:"value"`
}{}
ret := assertParseSuccess(t, &opts, "--value", "value")
assertStringArray(t, ret, []string{})
assertString(t, opts.Value, "value")
}
func TestLongArgEqual(t *testing.T) {
var opts = struct {
Value string `long:"value"`
}{}
ret := assertParseSuccess(t, &opts, "--value=value")
assertStringArray(t, ret, []string{})
assertString(t, opts.Value, "value")
}
func TestLongDefault(t *testing.T) {
var opts = struct {
Value string `long:"value" default:"value"`
}{}
ret := assertParseSuccess(t, &opts)
assertStringArray(t, ret, []string{})
assertString(t, opts.Value, "value")
}
func TestLongOptional(t *testing.T) {
var opts = struct {
Value string `long:"value" optional:"yes" optional-value:"value"`
}{}
ret := assertParseSuccess(t, &opts, "--value")
assertStringArray(t, ret, []string{})
assertString(t, opts.Value, "value")
}
func TestLongOptionalArg(t *testing.T) {
var opts = struct {
Value string `long:"value" optional:"yes" optional-value:"value"`
}{}
ret := assertParseSuccess(t, &opts, "--value", "no")
assertStringArray(t, ret, []string{"no"})
assertString(t, opts.Value, "value")
}
func TestLongOptionalArgEqual(t *testing.T) {
var opts = struct {
Value string `long:"value" optional:"yes" optional-value:"value"`
}{}
ret := assertParseSuccess(t, &opts, "--value=value", "no")
assertStringArray(t, ret, []string{"no"})
assertString(t, opts.Value, "value")
}

205
vendor/github.com/jessevdk/go-flags/man.go generated vendored Normal file
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package flags
import (
"fmt"
"io"
"runtime"
"strings"
"time"
)
func manQuote(s string) string {
return strings.Replace(s, "\\", "\\\\", -1)
}
func formatForMan(wr io.Writer, s string) {
for {
idx := strings.IndexRune(s, '`')
if idx < 0 {
fmt.Fprintf(wr, "%s", manQuote(s))
break
}
fmt.Fprintf(wr, "%s", manQuote(s[:idx]))
s = s[idx+1:]
idx = strings.IndexRune(s, '\'')
if idx < 0 {
fmt.Fprintf(wr, "%s", manQuote(s))
break
}
fmt.Fprintf(wr, "\\fB%s\\fP", manQuote(s[:idx]))
s = s[idx+1:]
}
}
func writeManPageOptions(wr io.Writer, grp *Group) {
grp.eachGroup(func(group *Group) {
if group.Hidden || len(group.options) == 0 {
return
}
// If the parent (grp) has any subgroups, display their descriptions as
// subsection headers similar to the output of --help.
if group.ShortDescription != "" && len(grp.groups) > 0 {
fmt.Fprintf(wr, ".SS %s\n", group.ShortDescription)
if group.LongDescription != "" {
formatForMan(wr, group.LongDescription)
fmt.Fprintln(wr, "")
}
}
for _, opt := range group.options {
if !opt.canCli() || opt.Hidden {
continue
}
fmt.Fprintln(wr, ".TP")
fmt.Fprintf(wr, "\\fB")
if opt.ShortName != 0 {
fmt.Fprintf(wr, "\\fB\\-%c\\fR", opt.ShortName)
}
if len(opt.LongName) != 0 {
if opt.ShortName != 0 {
fmt.Fprintf(wr, ", ")
}
fmt.Fprintf(wr, "\\fB\\-\\-%s\\fR", manQuote(opt.LongNameWithNamespace()))
}
if len(opt.ValueName) != 0 || opt.OptionalArgument {
if opt.OptionalArgument {
fmt.Fprintf(wr, " [\\fI%s=%s\\fR]", manQuote(opt.ValueName), manQuote(strings.Join(quoteV(opt.OptionalValue), ", ")))
} else {
fmt.Fprintf(wr, " \\fI%s\\fR", manQuote(opt.ValueName))
}
}
if len(opt.Default) != 0 {
fmt.Fprintf(wr, " <default: \\fI%s\\fR>", manQuote(strings.Join(quoteV(opt.Default), ", ")))
} else if len(opt.EnvDefaultKey) != 0 {
if runtime.GOOS == "windows" {
fmt.Fprintf(wr, " <default: \\fI%%%s%%\\fR>", manQuote(opt.EnvDefaultKey))
} else {
fmt.Fprintf(wr, " <default: \\fI$%s\\fR>", manQuote(opt.EnvDefaultKey))
}
}
if opt.Required {
fmt.Fprintf(wr, " (\\fIrequired\\fR)")
}
fmt.Fprintln(wr, "\\fP")
if len(opt.Description) != 0 {
formatForMan(wr, opt.Description)
fmt.Fprintln(wr, "")
}
}
})
}
func writeManPageSubcommands(wr io.Writer, name string, root *Command) {
commands := root.sortedVisibleCommands()
for _, c := range commands {
var nn string
if c.Hidden {
continue
}
if len(name) != 0 {
nn = name + " " + c.Name
} else {
nn = c.Name
}
writeManPageCommand(wr, nn, root, c)
}
}
func writeManPageCommand(wr io.Writer, name string, root *Command, command *Command) {
fmt.Fprintf(wr, ".SS %s\n", name)
fmt.Fprintln(wr, command.ShortDescription)
if len(command.LongDescription) > 0 {
fmt.Fprintln(wr, "")
cmdstart := fmt.Sprintf("The %s command", manQuote(command.Name))
if strings.HasPrefix(command.LongDescription, cmdstart) {
fmt.Fprintf(wr, "The \\fI%s\\fP command", manQuote(command.Name))
formatForMan(wr, command.LongDescription[len(cmdstart):])
fmt.Fprintln(wr, "")
} else {
formatForMan(wr, command.LongDescription)
fmt.Fprintln(wr, "")
}
}
var usage string
if us, ok := command.data.(Usage); ok {
usage = us.Usage()
} else if command.hasCliOptions() {
usage = fmt.Sprintf("[%s-OPTIONS]", command.Name)
}
var pre string
if root.hasCliOptions() {
pre = fmt.Sprintf("%s [OPTIONS] %s", root.Name, command.Name)
} else {
pre = fmt.Sprintf("%s %s", root.Name, command.Name)
}
if len(usage) > 0 {
fmt.Fprintf(wr, "\n\\fBUsage\\fP: %s %s\n.TP\n", manQuote(pre), manQuote(usage))
}
if len(command.Aliases) > 0 {
fmt.Fprintf(wr, "\n\\fBAliases\\fP: %s\n\n", manQuote(strings.Join(command.Aliases, ", ")))
}
writeManPageOptions(wr, command.Group)
writeManPageSubcommands(wr, name, command)
}
// WriteManPage writes a basic man page in groff format to the specified
// writer.
func (p *Parser) WriteManPage(wr io.Writer) {
t := time.Now()
fmt.Fprintf(wr, ".TH %s 1 \"%s\"\n", manQuote(p.Name), t.Format("2 January 2006"))
fmt.Fprintln(wr, ".SH NAME")
fmt.Fprintf(wr, "%s \\- %s\n", manQuote(p.Name), manQuote(p.ShortDescription))
fmt.Fprintln(wr, ".SH SYNOPSIS")
usage := p.Usage
if len(usage) == 0 {
usage = "[OPTIONS]"
}
fmt.Fprintf(wr, "\\fB%s\\fP %s\n", manQuote(p.Name), manQuote(usage))
fmt.Fprintln(wr, ".SH DESCRIPTION")
formatForMan(wr, p.LongDescription)
fmt.Fprintln(wr, "")
fmt.Fprintln(wr, ".SH OPTIONS")
writeManPageOptions(wr, p.Command.Group)
if len(p.visibleCommands()) > 0 {
fmt.Fprintln(wr, ".SH COMMANDS")
writeManPageSubcommands(wr, "", p.Command)
}
}

119
vendor/github.com/jessevdk/go-flags/marshal_test.go generated vendored Normal file
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@ -0,0 +1,119 @@
package flags
import (
"fmt"
"testing"
)
type marshalled string
func (m *marshalled) UnmarshalFlag(value string) error {
if value == "yes" {
*m = "true"
} else if value == "no" {
*m = "false"
} else {
return fmt.Errorf("`%s' is not a valid value, please specify `yes' or `no'", value)
}
return nil
}
func (m marshalled) MarshalFlag() (string, error) {
if m == "true" {
return "yes", nil
}
return "no", nil
}
type marshalledError bool
func (m marshalledError) MarshalFlag() (string, error) {
return "", newErrorf(ErrMarshal, "Failed to marshal")
}
func TestUnmarshal(t *testing.T) {
var opts = struct {
Value marshalled `short:"v"`
}{}
ret := assertParseSuccess(t, &opts, "-v=yes")
assertStringArray(t, ret, []string{})
if opts.Value != "true" {
t.Errorf("Expected Value to be \"true\"")
}
}
func TestUnmarshalDefault(t *testing.T) {
var opts = struct {
Value marshalled `short:"v" default:"yes"`
}{}
ret := assertParseSuccess(t, &opts)
assertStringArray(t, ret, []string{})
if opts.Value != "true" {
t.Errorf("Expected Value to be \"true\"")
}
}
func TestUnmarshalOptional(t *testing.T) {
var opts = struct {
Value marshalled `short:"v" optional:"yes" optional-value:"yes"`
}{}
ret := assertParseSuccess(t, &opts, "-v")
assertStringArray(t, ret, []string{})
if opts.Value != "true" {
t.Errorf("Expected Value to be \"true\"")
}
}
func TestUnmarshalError(t *testing.T) {
var opts = struct {
Value marshalled `short:"v"`
}{}
assertParseFail(t, ErrMarshal, fmt.Sprintf("invalid argument for flag `%cv' (expected flags.marshalled): `invalid' is not a valid value, please specify `yes' or `no'", defaultShortOptDelimiter), &opts, "-vinvalid")
}
func TestUnmarshalPositionalError(t *testing.T) {
var opts = struct {
Args struct {
Value marshalled
} `positional-args:"yes"`
}{}
parser := NewParser(&opts, Default&^PrintErrors)
_, err := parser.ParseArgs([]string{"invalid"})
msg := "`invalid' is not a valid value, please specify `yes' or `no'"
if err == nil {
assertFatalf(t, "Expected error: %s", msg)
return
}
if err.Error() != msg {
assertErrorf(t, "Expected error message %#v, but got %#v", msg, err.Error())
}
}
func TestMarshalError(t *testing.T) {
var opts = struct {
Value marshalledError `short:"v"`
}{}
p := NewParser(&opts, Default)
o := p.Command.Groups()[0].Options()[0]
_, err := convertToString(o.value, o.tag)
assertError(t, err, ErrMarshal, "Failed to marshal")
}

140
vendor/github.com/jessevdk/go-flags/multitag.go generated vendored Normal file
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package flags
import (
"strconv"
)
type multiTag struct {
value string
cache map[string][]string
}
func newMultiTag(v string) multiTag {
return multiTag{
value: v,
}
}
func (x *multiTag) scan() (map[string][]string, error) {
v := x.value
ret := make(map[string][]string)
// This is mostly copied from reflect.StructTag.Get
for v != "" {
i := 0
// Skip whitespace
for i < len(v) && v[i] == ' ' {
i++
}
v = v[i:]
if v == "" {
break
}
// Scan to colon to find key
i = 0
for i < len(v) && v[i] != ' ' && v[i] != ':' && v[i] != '"' {
i++
}
if i >= len(v) {
return nil, newErrorf(ErrTag, "expected `:' after key name, but got end of tag (in `%v`)", x.value)
}
if v[i] != ':' {
return nil, newErrorf(ErrTag, "expected `:' after key name, but got `%v' (in `%v`)", v[i], x.value)
}
if i+1 >= len(v) {
return nil, newErrorf(ErrTag, "expected `\"' to start tag value at end of tag (in `%v`)", x.value)
}
if v[i+1] != '"' {
return nil, newErrorf(ErrTag, "expected `\"' to start tag value, but got `%v' (in `%v`)", v[i+1], x.value)
}
name := v[:i]
v = v[i+1:]
// Scan quoted string to find value
i = 1
for i < len(v) && v[i] != '"' {
if v[i] == '\n' {
return nil, newErrorf(ErrTag, "unexpected newline in tag value `%v' (in `%v`)", name, x.value)
}
if v[i] == '\\' {
i++
}
i++
}
if i >= len(v) {
return nil, newErrorf(ErrTag, "expected end of tag value `\"' at end of tag (in `%v`)", x.value)
}
val, err := strconv.Unquote(v[:i+1])
if err != nil {
return nil, newErrorf(ErrTag, "Malformed value of tag `%v:%v` => %v (in `%v`)", name, v[:i+1], err, x.value)
}
v = v[i+1:]
ret[name] = append(ret[name], val)
}
return ret, nil
}
func (x *multiTag) Parse() error {
vals, err := x.scan()
x.cache = vals
return err
}
func (x *multiTag) cached() map[string][]string {
if x.cache == nil {
cache, _ := x.scan()
if cache == nil {
cache = make(map[string][]string)
}
x.cache = cache
}
return x.cache
}
func (x *multiTag) Get(key string) string {
c := x.cached()
if v, ok := c[key]; ok {
return v[len(v)-1]
}
return ""
}
func (x *multiTag) GetMany(key string) []string {
c := x.cached()
return c[key]
}
func (x *multiTag) Set(key string, value string) {
c := x.cached()
c[key] = []string{value}
}
func (x *multiTag) SetMany(key string, value []string) {
c := x.cached()
c[key] = value
}

461
vendor/github.com/jessevdk/go-flags/option.go generated vendored Normal file
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@ -0,0 +1,461 @@
package flags
import (
"bytes"
"fmt"
"reflect"
"strings"
"syscall"
"unicode/utf8"
)
// Option flag information. Contains a description of the option, short and
// long name as well as a default value and whether an argument for this
// flag is optional.
type Option struct {
// The description of the option flag. This description is shown
// automatically in the built-in help.
Description string
// The short name of the option (a single character). If not 0, the
// option flag can be 'activated' using -<ShortName>. Either ShortName
// or LongName needs to be non-empty.
ShortName rune
// The long name of the option. If not "", the option flag can be
// activated using --<LongName>. Either ShortName or LongName needs
// to be non-empty.
LongName string
// The default value of the option.
Default []string
// The optional environment default value key name.
EnvDefaultKey string
// The optional delimiter string for EnvDefaultKey values.
EnvDefaultDelim string
// If true, specifies that the argument to an option flag is optional.
// When no argument to the flag is specified on the command line, the
// value of OptionalValue will be set in the field this option represents.
// This is only valid for non-boolean options.
OptionalArgument bool
// The optional value of the option. The optional value is used when
// the option flag is marked as having an OptionalArgument. This means
// that when the flag is specified, but no option argument is given,
// the value of the field this option represents will be set to
// OptionalValue. This is only valid for non-boolean options.
OptionalValue []string
// If true, the option _must_ be specified on the command line. If the
// option is not specified, the parser will generate an ErrRequired type
// error.
Required bool
// A name for the value of an option shown in the Help as --flag [ValueName]
ValueName string
// A mask value to show in the help instead of the default value. This
// is useful for hiding sensitive information in the help, such as
// passwords.
DefaultMask string
// If non empty, only a certain set of values is allowed for an option.
Choices []string
// If true, the option is not displayed in the help or man page
Hidden bool
// The group which the option belongs to
group *Group
// The struct field which the option represents.
field reflect.StructField
// The struct field value which the option represents.
value reflect.Value
// Determines if the option will be always quoted in the INI output
iniQuote bool
tag multiTag
isSet bool
isSetDefault bool
preventDefault bool
defaultLiteral string
}
// LongNameWithNamespace returns the option's long name with the group namespaces
// prepended by walking up the option's group tree. Namespaces and the long name
// itself are separated by the parser's namespace delimiter. If the long name is
// empty an empty string is returned.
func (option *Option) LongNameWithNamespace() string {
if len(option.LongName) == 0 {
return ""
}
// fetch the namespace delimiter from the parser which is always at the
// end of the group hierarchy
namespaceDelimiter := ""
g := option.group
for {
if p, ok := g.parent.(*Parser); ok {
namespaceDelimiter = p.NamespaceDelimiter
break
}
switch i := g.parent.(type) {
case *Command:
g = i.Group
case *Group:
g = i
}
}
// concatenate long name with namespace
longName := option.LongName
g = option.group
for g != nil {
if g.Namespace != "" {
longName = g.Namespace + namespaceDelimiter + longName
}
switch i := g.parent.(type) {
case *Command:
g = i.Group
case *Group:
g = i
case *Parser:
g = nil
}
}
return longName
}
// String converts an option to a human friendly readable string describing the
// option.
func (option *Option) String() string {
var s string
var short string
if option.ShortName != 0 {
data := make([]byte, utf8.RuneLen(option.ShortName))
utf8.EncodeRune(data, option.ShortName)
short = string(data)
if len(option.LongName) != 0 {
s = fmt.Sprintf("%s%s, %s%s",
string(defaultShortOptDelimiter), short,
defaultLongOptDelimiter, option.LongNameWithNamespace())
} else {
s = fmt.Sprintf("%s%s", string(defaultShortOptDelimiter), short)
}
} else if len(option.LongName) != 0 {
s = fmt.Sprintf("%s%s", defaultLongOptDelimiter, option.LongNameWithNamespace())
}
return s
}
// Value returns the option value as an interface{}.
func (option *Option) Value() interface{} {
return option.value.Interface()
}
// Field returns the reflect struct field of the option.
func (option *Option) Field() reflect.StructField {
return option.field
}
// IsSet returns true if option has been set
func (option *Option) IsSet() bool {
return option.isSet
}
// IsSetDefault returns true if option has been set via the default option tag
func (option *Option) IsSetDefault() bool {
return option.isSetDefault
}
// Set the value of an option to the specified value. An error will be returned
// if the specified value could not be converted to the corresponding option
// value type.
func (option *Option) set(value *string) error {
kind := option.value.Type().Kind()
if (kind == reflect.Map || kind == reflect.Slice) && !option.isSet {
option.empty()
}
option.isSet = true
option.preventDefault = true
if len(option.Choices) != 0 {
found := false
for _, choice := range option.Choices {
if choice == *value {
found = true
break
}
}
if !found {
allowed := strings.Join(option.Choices[0:len(option.Choices)-1], ", ")
if len(option.Choices) > 1 {
allowed += " or " + option.Choices[len(option.Choices)-1]
}
return newErrorf(ErrInvalidChoice,
"Invalid value `%s' for option `%s'. Allowed values are: %s",
*value, option, allowed)
}
}
if option.isFunc() {
return option.call(value)
} else if value != nil {
return convert(*value, option.value, option.tag)
}
return convert("", option.value, option.tag)
}
func (option *Option) canCli() bool {
return option.ShortName != 0 || len(option.LongName) != 0
}
func (option *Option) canArgument() bool {
if u := option.isUnmarshaler(); u != nil {
return true
}
return !option.isBool()
}
func (option *Option) emptyValue() reflect.Value {
tp := option.value.Type()
if tp.Kind() == reflect.Map {
return reflect.MakeMap(tp)
}
return reflect.Zero(tp)
}
func (option *Option) empty() {
if !option.isFunc() {
option.value.Set(option.emptyValue())
}
}
func (option *Option) clearDefault() {
usedDefault := option.Default
if envKey := option.EnvDefaultKey; envKey != "" {
// os.Getenv() makes no distinction between undefined and
// empty values, so we use syscall.Getenv()
if value, ok := syscall.Getenv(envKey); ok {
if option.EnvDefaultDelim != "" {
usedDefault = strings.Split(value,
option.EnvDefaultDelim)
} else {
usedDefault = []string{value}
}
}
}
option.isSetDefault = true
if len(usedDefault) > 0 {
option.empty()
for _, d := range usedDefault {
option.set(&d)
option.isSetDefault = true
}
} else {
tp := option.value.Type()
switch tp.Kind() {
case reflect.Map:
if option.value.IsNil() {
option.empty()
}
case reflect.Slice:
if option.value.IsNil() {
option.empty()
}
}
}
}
func (option *Option) valueIsDefault() bool {
// Check if the value of the option corresponds to its
// default value
emptyval := option.emptyValue()
checkvalptr := reflect.New(emptyval.Type())
checkval := reflect.Indirect(checkvalptr)
checkval.Set(emptyval)
if len(option.Default) != 0 {
for _, v := range option.Default {
convert(v, checkval, option.tag)
}
}
return reflect.DeepEqual(option.value.Interface(), checkval.Interface())
}
func (option *Option) isUnmarshaler() Unmarshaler {
v := option.value
for {
if !v.CanInterface() {
break
}
i := v.Interface()
if u, ok := i.(Unmarshaler); ok {
return u
}
if !v.CanAddr() {
break
}
v = v.Addr()
}
return nil
}
func (option *Option) isBool() bool {
tp := option.value.Type()
for {
switch tp.Kind() {
case reflect.Slice, reflect.Ptr:
tp = tp.Elem()
case reflect.Bool:
return true
case reflect.Func:
return tp.NumIn() == 0
default:
return false
}
}
}
func (option *Option) isSignedNumber() bool {
tp := option.value.Type()
for {
switch tp.Kind() {
case reflect.Slice, reflect.Ptr:
tp = tp.Elem()
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Float32, reflect.Float64:
return true
default:
return false
}
}
}
func (option *Option) isFunc() bool {
return option.value.Type().Kind() == reflect.Func
}
func (option *Option) call(value *string) error {
var retval []reflect.Value
if value == nil {
retval = option.value.Call(nil)
} else {
tp := option.value.Type().In(0)
val := reflect.New(tp)
val = reflect.Indirect(val)
if err := convert(*value, val, option.tag); err != nil {
return err
}
retval = option.value.Call([]reflect.Value{val})
}
if len(retval) == 1 && retval[0].Type() == reflect.TypeOf((*error)(nil)).Elem() {
if retval[0].Interface() == nil {
return nil
}
return retval[0].Interface().(error)
}
return nil
}
func (option *Option) updateDefaultLiteral() {
defs := option.Default
def := ""
if len(defs) == 0 && option.canArgument() {
var showdef bool
switch option.field.Type.Kind() {
case reflect.Func, reflect.Ptr:
showdef = !option.value.IsNil()
case reflect.Slice, reflect.String, reflect.Array:
showdef = option.value.Len() > 0
case reflect.Map:
showdef = !option.value.IsNil() && option.value.Len() > 0
default:
zeroval := reflect.Zero(option.field.Type)
showdef = !reflect.DeepEqual(zeroval.Interface(), option.value.Interface())
}
if showdef {
def, _ = convertToString(option.value, option.tag)
}
} else if len(defs) != 0 {
l := len(defs) - 1
for i := 0; i < l; i++ {
def += quoteIfNeeded(defs[i]) + ", "
}
def += quoteIfNeeded(defs[l])
}
option.defaultLiteral = def
}
func (option *Option) shortAndLongName() string {
ret := &bytes.Buffer{}
if option.ShortName != 0 {
ret.WriteRune(defaultShortOptDelimiter)
ret.WriteRune(option.ShortName)
}
if len(option.LongName) != 0 {
if option.ShortName != 0 {
ret.WriteRune('/')
}
ret.WriteString(option.LongName)
}
return ret.String()
}

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package flags
import (
"testing"
)
func TestPassDoubleDash(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
}{}
p := NewParser(&opts, PassDoubleDash)
ret, err := p.ParseArgs([]string{"-v", "--", "-v", "-g"})
if err != nil {
t.Fatalf("Unexpected error: %v", err)
return
}
if !opts.Value {
t.Errorf("Expected Value to be true")
}
assertStringArray(t, ret, []string{"-v", "-g"})
}
func TestPassAfterNonOption(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
}{}
p := NewParser(&opts, PassAfterNonOption)
ret, err := p.ParseArgs([]string{"-v", "arg", "-v", "-g"})
if err != nil {
t.Fatalf("Unexpected error: %v", err)
return
}
if !opts.Value {
t.Errorf("Expected Value to be true")
}
assertStringArray(t, ret, []string{"arg", "-v", "-g"})
}

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// +build !windows forceposix
package flags
import (
"strings"
)
const (
defaultShortOptDelimiter = '-'
defaultLongOptDelimiter = "--"
defaultNameArgDelimiter = '='
)
func argumentStartsOption(arg string) bool {
return len(arg) > 0 && arg[0] == '-'
}
func argumentIsOption(arg string) bool {
if len(arg) > 1 && arg[0] == '-' && arg[1] != '-' {
return true
}
if len(arg) > 2 && arg[0] == '-' && arg[1] == '-' && arg[2] != '-' {
return true
}
return false
}
// stripOptionPrefix returns the option without the prefix and whether or
// not the option is a long option or not.
func stripOptionPrefix(optname string) (prefix string, name string, islong bool) {
if strings.HasPrefix(optname, "--") {
return "--", optname[2:], true
} else if strings.HasPrefix(optname, "-") {
return "-", optname[1:], false
}
return "", optname, false
}
// splitOption attempts to split the passed option into a name and an argument.
// When there is no argument specified, nil will be returned for it.
func splitOption(prefix string, option string, islong bool) (string, string, *string) {
pos := strings.Index(option, "=")
if (islong && pos >= 0) || (!islong && pos == 1) {
rest := option[pos+1:]
return option[:pos], "=", &rest
}
return option, "", nil
}
// addHelpGroup adds a new group that contains default help parameters.
func (c *Command) addHelpGroup(showHelp func() error) *Group {
var help struct {
ShowHelp func() error `short:"h" long:"help" description:"Show this help message"`
}
help.ShowHelp = showHelp
ret, _ := c.AddGroup("Help Options", "", &help)
ret.isBuiltinHelp = true
return ret
}

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// +build !forceposix
package flags
import (
"strings"
)
// Windows uses a front slash for both short and long options. Also it uses
// a colon for name/argument delimter.
const (
defaultShortOptDelimiter = '/'
defaultLongOptDelimiter = "/"
defaultNameArgDelimiter = ':'
)
func argumentStartsOption(arg string) bool {
return len(arg) > 0 && (arg[0] == '-' || arg[0] == '/')
}
func argumentIsOption(arg string) bool {
// Windows-style options allow front slash for the option
// delimiter.
if len(arg) > 1 && arg[0] == '/' {
return true
}
if len(arg) > 1 && arg[0] == '-' && arg[1] != '-' {
return true
}
if len(arg) > 2 && arg[0] == '-' && arg[1] == '-' && arg[2] != '-' {
return true
}
return false
}
// stripOptionPrefix returns the option without the prefix and whether or
// not the option is a long option or not.
func stripOptionPrefix(optname string) (prefix string, name string, islong bool) {
// Determine if the argument is a long option or not. Windows
// typically supports both long and short options with a single
// front slash as the option delimiter, so handle this situation
// nicely.
possplit := 0
if strings.HasPrefix(optname, "--") {
possplit = 2
islong = true
} else if strings.HasPrefix(optname, "-") {
possplit = 1
islong = false
} else if strings.HasPrefix(optname, "/") {
possplit = 1
islong = len(optname) > 2
}
return optname[:possplit], optname[possplit:], islong
}
// splitOption attempts to split the passed option into a name and an argument.
// When there is no argument specified, nil will be returned for it.
func splitOption(prefix string, option string, islong bool) (string, string, *string) {
if len(option) == 0 {
return option, "", nil
}
// Windows typically uses a colon for the option name and argument
// delimiter while POSIX typically uses an equals. Support both styles,
// but don't allow the two to be mixed. That is to say /foo:bar and
// --foo=bar are acceptable, but /foo=bar and --foo:bar are not.
var pos int
var sp string
if prefix == "/" {
sp = ":"
pos = strings.Index(option, sp)
} else if len(prefix) > 0 {
sp = "="
pos = strings.Index(option, sp)
}
if (islong && pos >= 0) || (!islong && pos == 1) {
rest := option[pos+1:]
return option[:pos], sp, &rest
}
return option, "", nil
}
// addHelpGroup adds a new group that contains default help parameters.
func (c *Command) addHelpGroup(showHelp func() error) *Group {
// Windows CLI applications typically use /? for help, so make both
// that available as well as the POSIX style h and help.
var help struct {
ShowHelpWindows func() error `short:"?" description:"Show this help message"`
ShowHelpPosix func() error `short:"h" long:"help" description:"Show this help message"`
}
help.ShowHelpWindows = showHelp
help.ShowHelpPosix = showHelp
ret, _ := c.AddGroup("Help Options", "", &help)
ret.isBuiltinHelp = true
return ret
}

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// Copyright 2012 Jesse van den Kieboom. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package flags
import (
"bytes"
"fmt"
"os"
"path"
"sort"
"strings"
"unicode/utf8"
)
// A Parser provides command line option parsing. It can contain several
// option groups each with their own set of options.
type Parser struct {
// Embedded, see Command for more information
*Command
// A usage string to be displayed in the help message.
Usage string
// Option flags changing the behavior of the parser.
Options Options
// NamespaceDelimiter separates group namespaces and option long names
NamespaceDelimiter string
// UnknownOptionsHandler is a function which gets called when the parser
// encounters an unknown option. The function receives the unknown option
// name, a SplitArgument which specifies its value if set with an argument
// separator, and the remaining command line arguments.
// It should return a new list of remaining arguments to continue parsing,
// or an error to indicate a parse failure.
UnknownOptionHandler func(option string, arg SplitArgument, args []string) ([]string, error)
// CompletionHandler is a function gets called to handle the completion of
// items. By default, the items are printed and the application is exited.
// You can override this default behavior by specifying a custom CompletionHandler.
CompletionHandler func(items []Completion)
// CommandHandler is a function that gets called to handle execution of a
// command. By default, the command will simply be executed. This can be
// overridden to perform certain actions (such as applying global flags)
// just before the command is executed. Note that if you override the
// handler it is your responsibility to call the command.Execute function.
//
// The command passed into CommandHandler may be nil in case there is no
// command to be executed when parsing has finished.
CommandHandler func(command Commander, args []string) error
internalError error
}
// SplitArgument represents the argument value of an option that was passed using
// an argument separator.
type SplitArgument interface {
// String returns the option's value as a string, and a boolean indicating
// if the option was present.
Value() (string, bool)
}
type strArgument struct {
value *string
}
func (s strArgument) Value() (string, bool) {
if s.value == nil {
return "", false
}
return *s.value, true
}
// Options provides parser options that change the behavior of the option
// parser.
type Options uint
const (
// None indicates no options.
None Options = 0
// HelpFlag adds a default Help Options group to the parser containing
// -h and --help options. When either -h or --help is specified on the
// command line, the parser will return the special error of type
// ErrHelp. When PrintErrors is also specified, then the help message
// will also be automatically printed to os.Stdout.
HelpFlag = 1 << iota
// PassDoubleDash passes all arguments after a double dash, --, as
// remaining command line arguments (i.e. they will not be parsed for
// flags).
PassDoubleDash
// IgnoreUnknown ignores any unknown options and passes them as
// remaining command line arguments instead of generating an error.
IgnoreUnknown
// PrintErrors prints any errors which occurred during parsing to
// os.Stderr. In the special case of ErrHelp, the message will be printed
// to os.Stdout.
PrintErrors
// PassAfterNonOption passes all arguments after the first non option
// as remaining command line arguments. This is equivalent to strict
// POSIX processing.
PassAfterNonOption
// Default is a convenient default set of options which should cover
// most of the uses of the flags package.
Default = HelpFlag | PrintErrors | PassDoubleDash
)
type parseState struct {
arg string
args []string
retargs []string
positional []*Arg
err error
command *Command
lookup lookup
}
// Parse is a convenience function to parse command line options with default
// settings. The provided data is a pointer to a struct representing the
// default option group (named "Application Options"). For more control, use
// flags.NewParser.
func Parse(data interface{}) ([]string, error) {
return NewParser(data, Default).Parse()
}
// ParseArgs is a convenience function to parse command line options with default
// settings. The provided data is a pointer to a struct representing the
// default option group (named "Application Options"). The args argument is
// the list of command line arguments to parse. If you just want to parse the
// default program command line arguments (i.e. os.Args), then use flags.Parse
// instead. For more control, use flags.NewParser.
func ParseArgs(data interface{}, args []string) ([]string, error) {
return NewParser(data, Default).ParseArgs(args)
}
// NewParser creates a new parser. It uses os.Args[0] as the application
// name and then calls Parser.NewNamedParser (see Parser.NewNamedParser for
// more details). The provided data is a pointer to a struct representing the
// default option group (named "Application Options"), or nil if the default
// group should not be added. The options parameter specifies a set of options
// for the parser.
func NewParser(data interface{}, options Options) *Parser {
p := NewNamedParser(path.Base(os.Args[0]), options)
if data != nil {
g, err := p.AddGroup("Application Options", "", data)
if err == nil {
g.parent = p
}
p.internalError = err
}
return p
}
// NewNamedParser creates a new parser. The appname is used to display the
// executable name in the built-in help message. Option groups and commands can
// be added to this parser by using AddGroup and AddCommand.
func NewNamedParser(appname string, options Options) *Parser {
p := &Parser{
Command: newCommand(appname, "", "", nil),
Options: options,
NamespaceDelimiter: ".",
}
p.Command.parent = p
return p
}
// Parse parses the command line arguments from os.Args using Parser.ParseArgs.
// For more detailed information see ParseArgs.
func (p *Parser) Parse() ([]string, error) {
return p.ParseArgs(os.Args[1:])
}
// ParseArgs parses the command line arguments according to the option groups that
// were added to the parser. On successful parsing of the arguments, the
// remaining, non-option, arguments (if any) are returned. The returned error
// indicates a parsing error and can be used with PrintError to display
// contextual information on where the error occurred exactly.
//
// When the common help group has been added (AddHelp) and either -h or --help
// was specified in the command line arguments, a help message will be
// automatically printed if the PrintErrors option is enabled.
// Furthermore, the special error type ErrHelp is returned.
// It is up to the caller to exit the program if so desired.
func (p *Parser) ParseArgs(args []string) ([]string, error) {
if p.internalError != nil {
return nil, p.internalError
}
p.eachOption(func(c *Command, g *Group, option *Option) {
option.isSet = false
option.isSetDefault = false
option.updateDefaultLiteral()
})
// Add built-in help group to all commands if necessary
if (p.Options & HelpFlag) != None {
p.addHelpGroups(p.showBuiltinHelp)
}
compval := os.Getenv("GO_FLAGS_COMPLETION")
if len(compval) != 0 {
comp := &completion{parser: p}
items := comp.complete(args)
if p.CompletionHandler != nil {
p.CompletionHandler(items)
} else {
comp.print(items, compval == "verbose")
os.Exit(0)
}
return nil, nil
}
s := &parseState{
args: args,
retargs: make([]string, 0, len(args)),
}
p.fillParseState(s)
for !s.eof() {
arg := s.pop()
// When PassDoubleDash is set and we encounter a --, then
// simply append all the rest as arguments and break out
if (p.Options&PassDoubleDash) != None && arg == "--" {
s.addArgs(s.args...)
break
}
if !argumentIsOption(arg) {
// Note: this also sets s.err, so we can just check for
// nil here and use s.err later
if p.parseNonOption(s) != nil {
break
}
continue
}
var err error
prefix, optname, islong := stripOptionPrefix(arg)
optname, _, argument := splitOption(prefix, optname, islong)
if islong {
err = p.parseLong(s, optname, argument)
} else {
err = p.parseShort(s, optname, argument)
}
if err != nil {
ignoreUnknown := (p.Options & IgnoreUnknown) != None
parseErr := wrapError(err)
if parseErr.Type != ErrUnknownFlag || (!ignoreUnknown && p.UnknownOptionHandler == nil) {
s.err = parseErr
break
}
if ignoreUnknown {
s.addArgs(arg)
} else if p.UnknownOptionHandler != nil {
modifiedArgs, err := p.UnknownOptionHandler(optname, strArgument{argument}, s.args)
if err != nil {
s.err = err
break
}
s.args = modifiedArgs
}
}
}
if s.err == nil {
p.eachOption(func(c *Command, g *Group, option *Option) {
if option.preventDefault {
return
}
option.clearDefault()
})
s.checkRequired(p)
}
var reterr error
if s.err != nil {
reterr = s.err
} else if len(s.command.commands) != 0 && !s.command.SubcommandsOptional {
reterr = s.estimateCommand()
} else if cmd, ok := s.command.data.(Commander); ok {
if p.CommandHandler != nil {
reterr = p.CommandHandler(cmd, s.retargs)
} else {
reterr = cmd.Execute(s.retargs)
}
} else if p.CommandHandler != nil {
reterr = p.CommandHandler(nil, s.retargs)
}
if reterr != nil {
var retargs []string
if ourErr, ok := reterr.(*Error); !ok || ourErr.Type != ErrHelp {
retargs = append([]string{s.arg}, s.args...)
} else {
retargs = s.args
}
return retargs, p.printError(reterr)
}
return s.retargs, nil
}
func (p *parseState) eof() bool {
return len(p.args) == 0
}
func (p *parseState) pop() string {
if p.eof() {
return ""
}
p.arg = p.args[0]
p.args = p.args[1:]
return p.arg
}
func (p *parseState) peek() string {
if p.eof() {
return ""
}
return p.args[0]
}
func (p *parseState) checkRequired(parser *Parser) error {
c := parser.Command
var required []*Option
for c != nil {
c.eachGroup(func(g *Group) {
for _, option := range g.options {
if !option.isSet && option.Required {
required = append(required, option)
}
}
})
c = c.Active
}
if len(required) == 0 {
if len(p.positional) > 0 {
var reqnames []string
for _, arg := range p.positional {
argRequired := (!arg.isRemaining() && p.command.ArgsRequired) || arg.Required != -1 || arg.RequiredMaximum != -1
if !argRequired {
continue
}
if arg.isRemaining() {
if arg.value.Len() < arg.Required {
var arguments string
if arg.Required > 1 {
arguments = "arguments, but got only " + fmt.Sprintf("%d", arg.value.Len())
} else {
arguments = "argument"
}
reqnames = append(reqnames, "`"+arg.Name+" (at least "+fmt.Sprintf("%d", arg.Required)+" "+arguments+")`")
} else if arg.RequiredMaximum != -1 && arg.value.Len() > arg.RequiredMaximum {
if arg.RequiredMaximum == 0 {
reqnames = append(reqnames, "`"+arg.Name+" (zero arguments)`")
} else {
var arguments string
if arg.RequiredMaximum > 1 {
arguments = "arguments, but got " + fmt.Sprintf("%d", arg.value.Len())
} else {
arguments = "argument"
}
reqnames = append(reqnames, "`"+arg.Name+" (at most "+fmt.Sprintf("%d", arg.RequiredMaximum)+" "+arguments+")`")
}
}
} else {
reqnames = append(reqnames, "`"+arg.Name+"`")
}
}
if len(reqnames) == 0 {
return nil
}
var msg string
if len(reqnames) == 1 {
msg = fmt.Sprintf("the required argument %s was not provided", reqnames[0])
} else {
msg = fmt.Sprintf("the required arguments %s and %s were not provided",
strings.Join(reqnames[:len(reqnames)-1], ", "), reqnames[len(reqnames)-1])
}
p.err = newError(ErrRequired, msg)
return p.err
}
return nil
}
names := make([]string, 0, len(required))
for _, k := range required {
names = append(names, "`"+k.String()+"'")
}
sort.Strings(names)
var msg string
if len(names) == 1 {
msg = fmt.Sprintf("the required flag %s was not specified", names[0])
} else {
msg = fmt.Sprintf("the required flags %s and %s were not specified",
strings.Join(names[:len(names)-1], ", "), names[len(names)-1])
}
p.err = newError(ErrRequired, msg)
return p.err
}
func (p *parseState) estimateCommand() error {
commands := p.command.sortedVisibleCommands()
cmdnames := make([]string, len(commands))
for i, v := range commands {
cmdnames[i] = v.Name
}
var msg string
var errtype ErrorType
if len(p.retargs) != 0 {
c, l := closestChoice(p.retargs[0], cmdnames)
msg = fmt.Sprintf("Unknown command `%s'", p.retargs[0])
errtype = ErrUnknownCommand
if float32(l)/float32(len(c)) < 0.5 {
msg = fmt.Sprintf("%s, did you mean `%s'?", msg, c)
} else if len(cmdnames) == 1 {
msg = fmt.Sprintf("%s. You should use the %s command",
msg,
cmdnames[0])
} else if len(cmdnames) > 1 {
msg = fmt.Sprintf("%s. Please specify one command of: %s or %s",
msg,
strings.Join(cmdnames[:len(cmdnames)-1], ", "),
cmdnames[len(cmdnames)-1])
}
} else {
errtype = ErrCommandRequired
if len(cmdnames) == 1 {
msg = fmt.Sprintf("Please specify the %s command", cmdnames[0])
} else if len(cmdnames) > 1 {
msg = fmt.Sprintf("Please specify one command of: %s or %s",
strings.Join(cmdnames[:len(cmdnames)-1], ", "),
cmdnames[len(cmdnames)-1])
}
}
return newError(errtype, msg)
}
func (p *Parser) parseOption(s *parseState, name string, option *Option, canarg bool, argument *string) (err error) {
if !option.canArgument() {
if argument != nil {
return newErrorf(ErrNoArgumentForBool, "bool flag `%s' cannot have an argument", option)
}
err = option.set(nil)
} else if argument != nil || (canarg && !s.eof()) {
var arg string
if argument != nil {
arg = *argument
} else {
arg = s.pop()
if argumentIsOption(arg) && !(option.isSignedNumber() && len(arg) > 1 && arg[0] == '-' && arg[1] >= '0' && arg[1] <= '9') {
return newErrorf(ErrExpectedArgument, "expected argument for flag `%s', but got option `%s'", option, arg)
} else if p.Options&PassDoubleDash != 0 && arg == "--" {
return newErrorf(ErrExpectedArgument, "expected argument for flag `%s', but got double dash `--'", option)
}
}
if option.tag.Get("unquote") != "false" {
arg, err = unquoteIfPossible(arg)
}
if err == nil {
err = option.set(&arg)
}
} else if option.OptionalArgument {
option.empty()
for _, v := range option.OptionalValue {
err = option.set(&v)
if err != nil {
break
}
}
} else {
err = newErrorf(ErrExpectedArgument, "expected argument for flag `%s'", option)
}
if err != nil {
if _, ok := err.(*Error); !ok {
err = newErrorf(ErrMarshal, "invalid argument for flag `%s' (expected %s): %s",
option,
option.value.Type(),
err.Error())
}
}
return err
}
func (p *Parser) parseLong(s *parseState, name string, argument *string) error {
if option := s.lookup.longNames[name]; option != nil {
// Only long options that are required can consume an argument
// from the argument list
canarg := !option.OptionalArgument
return p.parseOption(s, name, option, canarg, argument)
}
return newErrorf(ErrUnknownFlag, "unknown flag `%s'", name)
}
func (p *Parser) splitShortConcatArg(s *parseState, optname string) (string, *string) {
c, n := utf8.DecodeRuneInString(optname)
if n == len(optname) {
return optname, nil
}
first := string(c)
if option := s.lookup.shortNames[first]; option != nil && option.canArgument() {
arg := optname[n:]
return first, &arg
}
return optname, nil
}
func (p *Parser) parseShort(s *parseState, optname string, argument *string) error {
if argument == nil {
optname, argument = p.splitShortConcatArg(s, optname)
}
for i, c := range optname {
shortname := string(c)
if option := s.lookup.shortNames[shortname]; option != nil {
// Only the last short argument can consume an argument from
// the arguments list, and only if it's non optional
canarg := (i+utf8.RuneLen(c) == len(optname)) && !option.OptionalArgument
if err := p.parseOption(s, shortname, option, canarg, argument); err != nil {
return err
}
} else {
return newErrorf(ErrUnknownFlag, "unknown flag `%s'", shortname)
}
// Only the first option can have a concatted argument, so just
// clear argument here
argument = nil
}
return nil
}
func (p *parseState) addArgs(args ...string) error {
for len(p.positional) > 0 && len(args) > 0 {
arg := p.positional[0]
if err := convert(args[0], arg.value, arg.tag); err != nil {
p.err = err
return err
}
if !arg.isRemaining() {
p.positional = p.positional[1:]
}
args = args[1:]
}
p.retargs = append(p.retargs, args...)
return nil
}
func (p *Parser) parseNonOption(s *parseState) error {
if len(s.positional) > 0 {
return s.addArgs(s.arg)
}
if len(s.command.commands) > 0 && len(s.retargs) == 0 {
if cmd := s.lookup.commands[s.arg]; cmd != nil {
s.command.Active = cmd
cmd.fillParseState(s)
return nil
} else if !s.command.SubcommandsOptional {
s.addArgs(s.arg)
return newErrorf(ErrUnknownCommand, "Unknown command `%s'", s.arg)
}
}
if (p.Options & PassAfterNonOption) != None {
// If PassAfterNonOption is set then all remaining arguments
// are considered positional
if err := s.addArgs(s.arg); err != nil {
return err
}
if err := s.addArgs(s.args...); err != nil {
return err
}
s.args = []string{}
} else {
return s.addArgs(s.arg)
}
return nil
}
func (p *Parser) showBuiltinHelp() error {
var b bytes.Buffer
p.WriteHelp(&b)
return newError(ErrHelp, b.String())
}
func (p *Parser) printError(err error) error {
if err != nil && (p.Options&PrintErrors) != None {
flagsErr, ok := err.(*Error)
if ok && flagsErr.Type == ErrHelp {
fmt.Fprintln(os.Stdout, err)
} else {
fmt.Fprintln(os.Stderr, err)
}
}
return err
}
func (p *Parser) clearIsSet() {
p.eachCommand(func(c *Command) {
c.eachGroup(func(g *Group) {
for _, option := range g.options {
option.isSet = false
}
})
}, true)
}

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package flags
import (
"fmt"
"os"
"reflect"
"runtime"
"strconv"
"strings"
"testing"
"time"
)
type defaultOptions struct {
Int int `long:"i"`
IntDefault int `long:"id" default:"1"`
Float64 float64 `long:"f"`
Float64Default float64 `long:"fd" default:"-3.14"`
NumericFlag bool `short:"3"`
String string `long:"str"`
StringDefault string `long:"strd" default:"abc"`
StringNotUnquoted string `long:"strnot" unquote:"false"`
Time time.Duration `long:"t"`
TimeDefault time.Duration `long:"td" default:"1m"`
Map map[string]int `long:"m"`
MapDefault map[string]int `long:"md" default:"a:1"`
Slice []int `long:"s"`
SliceDefault []int `long:"sd" default:"1" default:"2"`
}
func TestDefaults(t *testing.T) {
var tests = []struct {
msg string
args []string
expected defaultOptions
}{
{
msg: "no arguments, expecting default values",
args: []string{},
expected: defaultOptions{
Int: 0,
IntDefault: 1,
Float64: 0.0,
Float64Default: -3.14,
NumericFlag: false,
String: "",
StringDefault: "abc",
Time: 0,
TimeDefault: time.Minute,
Map: map[string]int{},
MapDefault: map[string]int{"a": 1},
Slice: []int{},
SliceDefault: []int{1, 2},
},
},
{
msg: "non-zero value arguments, expecting overwritten arguments",
args: []string{"--i=3", "--id=3", "--f=-2.71", "--fd=2.71", "-3", "--str=def", "--strd=def", "--t=3ms", "--td=3ms", "--m=c:3", "--md=c:3", "--s=3", "--sd=3"},
expected: defaultOptions{
Int: 3,
IntDefault: 3,
Float64: -2.71,
Float64Default: 2.71,
NumericFlag: true,
String: "def",
StringDefault: "def",
Time: 3 * time.Millisecond,
TimeDefault: 3 * time.Millisecond,
Map: map[string]int{"c": 3},
MapDefault: map[string]int{"c": 3},
Slice: []int{3},
SliceDefault: []int{3},
},
},
{
msg: "zero value arguments, expecting overwritten arguments",
args: []string{"--i=0", "--id=0", "--f=0", "--fd=0", "--str", "", "--strd=\"\"", "--t=0ms", "--td=0s", "--m=:0", "--md=:0", "--s=0", "--sd=0"},
expected: defaultOptions{
Int: 0,
IntDefault: 0,
Float64: 0,
Float64Default: 0,
String: "",
StringDefault: "",
Time: 0,
TimeDefault: 0,
Map: map[string]int{"": 0},
MapDefault: map[string]int{"": 0},
Slice: []int{0},
SliceDefault: []int{0},
},
},
}
for _, test := range tests {
var opts defaultOptions
_, err := ParseArgs(&opts, test.args)
if err != nil {
t.Fatalf("%s:\nUnexpected error: %v", test.msg, err)
}
if opts.Slice == nil {
opts.Slice = []int{}
}
if !reflect.DeepEqual(opts, test.expected) {
t.Errorf("%s:\nUnexpected options with arguments %+v\nexpected\n%+v\nbut got\n%+v\n", test.msg, test.args, test.expected, opts)
}
}
}
func TestNoDefaultsForBools(t *testing.T) {
var opts struct {
DefaultBool bool `short:"d" default:"true"`
}
if runtime.GOOS == "windows" {
assertParseFail(t, ErrInvalidTag, "boolean flag `/d' may not have default values, they always default to `false' and can only be turned on", &opts)
} else {
assertParseFail(t, ErrInvalidTag, "boolean flag `-d' may not have default values, they always default to `false' and can only be turned on", &opts)
}
}
func TestUnquoting(t *testing.T) {
var tests = []struct {
arg string
err error
value string
}{
{
arg: "\"abc",
err: strconv.ErrSyntax,
value: "",
},
{
arg: "\"\"abc\"",
err: strconv.ErrSyntax,
value: "",
},
{
arg: "\"abc\"",
err: nil,
value: "abc",
},
{
arg: "\"\\\"abc\\\"\"",
err: nil,
value: "\"abc\"",
},
{
arg: "\"\\\"abc\"",
err: nil,
value: "\"abc",
},
}
for _, test := range tests {
var opts defaultOptions
for _, delimiter := range []bool{false, true} {
p := NewParser(&opts, None)
var err error
if delimiter {
_, err = p.ParseArgs([]string{"--str=" + test.arg, "--strnot=" + test.arg})
} else {
_, err = p.ParseArgs([]string{"--str", test.arg, "--strnot", test.arg})
}
if test.err == nil {
if err != nil {
t.Fatalf("Expected no error but got: %v", err)
}
if test.value != opts.String {
t.Fatalf("Expected String to be %q but got %q", test.value, opts.String)
}
if q := strconv.Quote(test.value); q != opts.StringNotUnquoted {
t.Fatalf("Expected StringDefault to be %q but got %q", q, opts.StringNotUnquoted)
}
} else {
if err == nil {
t.Fatalf("Expected error")
} else if e, ok := err.(*Error); ok {
if strings.HasPrefix(e.Message, test.err.Error()) {
t.Fatalf("Expected error message to end with %q but got %v", test.err.Error(), e.Message)
}
}
}
}
}
}
// EnvRestorer keeps a copy of a set of env variables and can restore the env from them
type EnvRestorer struct {
env map[string]string
}
func (r *EnvRestorer) Restore() {
os.Clearenv()
for k, v := range r.env {
os.Setenv(k, v)
}
}
// EnvSnapshot returns a snapshot of the currently set env variables
func EnvSnapshot() *EnvRestorer {
r := EnvRestorer{make(map[string]string)}
for _, kv := range os.Environ() {
parts := strings.SplitN(kv, "=", 2)
if len(parts) != 2 {
panic("got a weird env variable: " + kv)
}
r.env[parts[0]] = parts[1]
}
return &r
}
type envDefaultOptions struct {
Int int `long:"i" default:"1" env:"TEST_I"`
Time time.Duration `long:"t" default:"1m" env:"TEST_T"`
Map map[string]int `long:"m" default:"a:1" env:"TEST_M" env-delim:";"`
Slice []int `long:"s" default:"1" default:"2" env:"TEST_S" env-delim:","`
}
func TestEnvDefaults(t *testing.T) {
var tests = []struct {
msg string
args []string
expected envDefaultOptions
env map[string]string
}{
{
msg: "no arguments, no env, expecting default values",
args: []string{},
expected: envDefaultOptions{
Int: 1,
Time: time.Minute,
Map: map[string]int{"a": 1},
Slice: []int{1, 2},
},
},
{
msg: "no arguments, env defaults, expecting env default values",
args: []string{},
expected: envDefaultOptions{
Int: 2,
Time: 2 * time.Minute,
Map: map[string]int{"a": 2, "b": 3},
Slice: []int{4, 5, 6},
},
env: map[string]string{
"TEST_I": "2",
"TEST_T": "2m",
"TEST_M": "a:2;b:3",
"TEST_S": "4,5,6",
},
},
{
msg: "non-zero value arguments, expecting overwritten arguments",
args: []string{"--i=3", "--t=3ms", "--m=c:3", "--s=3"},
expected: envDefaultOptions{
Int: 3,
Time: 3 * time.Millisecond,
Map: map[string]int{"c": 3},
Slice: []int{3},
},
env: map[string]string{
"TEST_I": "2",
"TEST_T": "2m",
"TEST_M": "a:2;b:3",
"TEST_S": "4,5,6",
},
},
{
msg: "zero value arguments, expecting overwritten arguments",
args: []string{"--i=0", "--t=0ms", "--m=:0", "--s=0"},
expected: envDefaultOptions{
Int: 0,
Time: 0,
Map: map[string]int{"": 0},
Slice: []int{0},
},
env: map[string]string{
"TEST_I": "2",
"TEST_T": "2m",
"TEST_M": "a:2;b:3",
"TEST_S": "4,5,6",
},
},
}
oldEnv := EnvSnapshot()
defer oldEnv.Restore()
for _, test := range tests {
var opts envDefaultOptions
oldEnv.Restore()
for envKey, envValue := range test.env {
os.Setenv(envKey, envValue)
}
_, err := ParseArgs(&opts, test.args)
if err != nil {
t.Fatalf("%s:\nUnexpected error: %v", test.msg, err)
}
if opts.Slice == nil {
opts.Slice = []int{}
}
if !reflect.DeepEqual(opts, test.expected) {
t.Errorf("%s:\nUnexpected options with arguments %+v\nexpected\n%+v\nbut got\n%+v\n", test.msg, test.args, test.expected, opts)
}
}
}
func TestOptionAsArgument(t *testing.T) {
var tests = []struct {
args []string
expectError bool
errType ErrorType
errMsg string
rest []string
}{
{
// short option must not be accepted as argument
args: []string{"--string-slice", "foobar", "--string-slice", "-o"},
expectError: true,
errType: ErrExpectedArgument,
errMsg: "expected argument for flag `" + defaultLongOptDelimiter + "string-slice', but got option `-o'",
},
{
// long option must not be accepted as argument
args: []string{"--string-slice", "foobar", "--string-slice", "--other-option"},
expectError: true,
errType: ErrExpectedArgument,
errMsg: "expected argument for flag `" + defaultLongOptDelimiter + "string-slice', but got option `--other-option'",
},
{
// long option must not be accepted as argument
args: []string{"--string-slice", "--"},
expectError: true,
errType: ErrExpectedArgument,
errMsg: "expected argument for flag `" + defaultLongOptDelimiter + "string-slice', but got double dash `--'",
},
{
// quoted and appended option should be accepted as argument (even if it looks like an option)
args: []string{"--string-slice", "foobar", "--string-slice=\"--other-option\""},
},
{
// Accept any single character arguments including '-'
args: []string{"--string-slice", "-"},
},
{
// Do not accept arguments which start with '-' even if the next character is a digit
args: []string{"--string-slice", "-3.14"},
expectError: true,
errType: ErrExpectedArgument,
errMsg: "expected argument for flag `" + defaultLongOptDelimiter + "string-slice', but got option `-3.14'",
},
{
// Do not accept arguments which start with '-' if the next character is not a digit
args: []string{"--string-slice", "-character"},
expectError: true,
errType: ErrExpectedArgument,
errMsg: "expected argument for flag `" + defaultLongOptDelimiter + "string-slice', but got option `-character'",
},
{
args: []string{"-o", "-", "-"},
rest: []string{"-", "-"},
},
{
// Accept arguments which start with '-' if the next character is a digit, for number options only
args: []string{"--int-slice", "-3"},
},
{
// Accept arguments which start with '-' if the next character is a digit, for number options only
args: []string{"--int16", "-3"},
},
{
// Accept arguments which start with '-' if the next character is a digit, for number options only
args: []string{"--float32", "-3.2"},
},
{
// Accept arguments which start with '-' if the next character is a digit, for number options only
args: []string{"--float32ptr", "-3.2"},
},
}
var opts struct {
StringSlice []string `long:"string-slice"`
IntSlice []int `long:"int-slice"`
Int16 int16 `long:"int16"`
Float32 float32 `long:"float32"`
Float32Ptr *float32 `long:"float32ptr"`
OtherOption bool `long:"other-option" short:"o"`
}
for _, test := range tests {
if test.expectError {
assertParseFail(t, test.errType, test.errMsg, &opts, test.args...)
} else {
args := assertParseSuccess(t, &opts, test.args...)
assertStringArray(t, args, test.rest)
}
}
}
func TestUnknownFlagHandler(t *testing.T) {
var opts struct {
Flag1 string `long:"flag1"`
Flag2 string `long:"flag2"`
}
p := NewParser(&opts, None)
var unknownFlag1 string
var unknownFlag2 bool
var unknownFlag3 string
// Set up a callback to intercept unknown options during parsing
p.UnknownOptionHandler = func(option string, arg SplitArgument, args []string) ([]string, error) {
if option == "unknownFlag1" {
if argValue, ok := arg.Value(); ok {
unknownFlag1 = argValue
return args, nil
}
// consume a value from remaining args list
unknownFlag1 = args[0]
return args[1:], nil
} else if option == "unknownFlag2" {
// treat this one as a bool switch, don't consume any args
unknownFlag2 = true
return args, nil
} else if option == "unknownFlag3" {
if argValue, ok := arg.Value(); ok {
unknownFlag3 = argValue
return args, nil
}
// consume a value from remaining args list
unknownFlag3 = args[0]
return args[1:], nil
}
return args, fmt.Errorf("Unknown flag: %v", option)
}
// Parse args containing some unknown flags, verify that
// our callback can handle all of them
_, err := p.ParseArgs([]string{"--flag1=stuff", "--unknownFlag1", "blah", "--unknownFlag2", "--unknownFlag3=baz", "--flag2=foo"})
if err != nil {
assertErrorf(t, "Parser returned unexpected error %v", err)
}
assertString(t, opts.Flag1, "stuff")
assertString(t, opts.Flag2, "foo")
assertString(t, unknownFlag1, "blah")
assertString(t, unknownFlag3, "baz")
if !unknownFlag2 {
assertErrorf(t, "Flag should have been set by unknown handler, but had value: %v", unknownFlag2)
}
// Parse args with unknown flags that callback doesn't handle, verify it returns error
_, err = p.ParseArgs([]string{"--flag1=stuff", "--unknownFlagX", "blah", "--flag2=foo"})
if err == nil {
assertErrorf(t, "Parser should have returned error, but returned nil")
}
}
func TestChoices(t *testing.T) {
var opts struct {
Choice string `long:"choose" choice:"v1" choice:"v2"`
}
assertParseFail(t, ErrInvalidChoice, "Invalid value `invalid' for option `"+defaultLongOptDelimiter+"choose'. Allowed values are: v1 or v2", &opts, "--choose", "invalid")
assertParseSuccess(t, &opts, "--choose", "v2")
assertString(t, opts.Choice, "v2")
}
func TestEmbedded(t *testing.T) {
type embedded struct {
V bool `short:"v"`
}
var opts struct {
embedded
}
assertParseSuccess(t, &opts, "-v")
if !opts.V {
t.Errorf("Expected V to be true")
}
}
type command struct {
}
func (c *command) Execute(args []string) error {
return nil
}
func TestCommandHandlerNoCommand(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
}{}
parser := NewParser(&opts, Default&^PrintErrors)
var executedCommand Commander
var executedArgs []string
executed := false
parser.CommandHandler = func(command Commander, args []string) error {
executed = true
executedCommand = command
executedArgs = args
return nil
}
_, err := parser.ParseArgs([]string{"arg1", "arg2"})
if err != nil {
t.Fatalf("Unexpected parse error: %s", err)
}
if !executed {
t.Errorf("Expected command handler to be executed")
}
if executedCommand != nil {
t.Errorf("Did not exect an executed command")
}
assertStringArray(t, executedArgs, []string{"arg1", "arg2"})
}
func TestCommandHandler(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
Command command `command:"cmd"`
}{}
parser := NewParser(&opts, Default&^PrintErrors)
var executedCommand Commander
var executedArgs []string
executed := false
parser.CommandHandler = func(command Commander, args []string) error {
executed = true
executedCommand = command
executedArgs = args
return nil
}
_, err := parser.ParseArgs([]string{"cmd", "arg1", "arg2"})
if err != nil {
t.Fatalf("Unexpected parse error: %s", err)
}
if !executed {
t.Errorf("Expected command handler to be executed")
}
if executedCommand == nil {
t.Errorf("Expected command handler to be executed")
}
assertStringArray(t, executedArgs, []string{"arg1", "arg2"})
}

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vendor/github.com/jessevdk/go-flags/pointer_test.go generated vendored Normal file
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package flags
import (
"testing"
)
func TestPointerBool(t *testing.T) {
var opts = struct {
Value *bool `short:"v"`
}{}
ret := assertParseSuccess(t, &opts, "-v")
assertStringArray(t, ret, []string{})
if !*opts.Value {
t.Errorf("Expected Value to be true")
}
}
func TestPointerString(t *testing.T) {
var opts = struct {
Value *string `short:"v"`
}{}
ret := assertParseSuccess(t, &opts, "-v", "value")
assertStringArray(t, ret, []string{})
assertString(t, *opts.Value, "value")
}
func TestPointerSlice(t *testing.T) {
var opts = struct {
Value *[]string `short:"v"`
}{}
ret := assertParseSuccess(t, &opts, "-v", "value1", "-v", "value2")
assertStringArray(t, ret, []string{})
assertStringArray(t, *opts.Value, []string{"value1", "value2"})
}
func TestPointerMap(t *testing.T) {
var opts = struct {
Value *map[string]int `short:"v"`
}{}
ret := assertParseSuccess(t, &opts, "-v", "k1:2", "-v", "k2:-5")
assertStringArray(t, ret, []string{})
if v, ok := (*opts.Value)["k1"]; !ok {
t.Errorf("Expected key \"k1\" to exist")
} else if v != 2 {
t.Errorf("Expected \"k1\" to be 2, but got %#v", v)
}
if v, ok := (*opts.Value)["k2"]; !ok {
t.Errorf("Expected key \"k2\" to exist")
} else if v != -5 {
t.Errorf("Expected \"k2\" to be -5, but got %#v", v)
}
}
type marshalledString string
func (m *marshalledString) UnmarshalFlag(value string) error {
*m = marshalledString(value)
return nil
}
func (m marshalledString) MarshalFlag() (string, error) {
return string(m), nil
}
func TestPointerStringMarshalled(t *testing.T) {
var opts = struct {
Value *marshalledString `short:"v"`
}{}
ret := assertParseSuccess(t, &opts, "-v", "value")
assertStringArray(t, ret, []string{})
if opts.Value == nil {
t.Error("Expected value not to be nil")
return
}
assertString(t, string(*opts.Value), "value")
}
type marshalledStruct struct {
Value string
}
func (m *marshalledStruct) UnmarshalFlag(value string) error {
m.Value = value
return nil
}
func (m marshalledStruct) MarshalFlag() (string, error) {
return m.Value, nil
}
func TestPointerStructMarshalled(t *testing.T) {
var opts = struct {
Value *marshalledStruct `short:"v"`
}{}
ret := assertParseSuccess(t, &opts, "-v", "value")
assertStringArray(t, ret, []string{})
if opts.Value == nil {
t.Error("Expected value not to be nil")
return
}
assertString(t, opts.Value.Value, "value")
}
type PointerGroup struct {
Value bool `short:"v"`
}
func TestPointerGroup(t *testing.T) {
var opts = struct {
Group *PointerGroup `group:"Group Options"`
}{}
ret := assertParseSuccess(t, &opts, "-v")
assertStringArray(t, ret, []string{})
if !opts.Group.Value {
t.Errorf("Expected Group.Value to be true")
}
}
func TestDoNotChangeNonTaggedFields(t *testing.T) {
var opts struct {
A struct {
Pointer *int
}
B *struct {
Pointer *int
}
}
ret := assertParseSuccess(t, &opts)
assertStringArray(t, ret, []string{})
if opts.A.Pointer != nil {
t.Error("Expected A.Pointer to be nil")
}
if opts.B != nil {
t.Error("Expected B to be nil")
}
if opts.B != nil && opts.B.Pointer != nil {
t.Error("Expected B.Pointer to be nil")
}
}

234
vendor/github.com/jessevdk/go-flags/short_test.go generated vendored Normal file
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package flags
import (
"fmt"
"testing"
)
func TestShort(t *testing.T) {
var opts = struct {
Value bool `short:"v"`
}{}
ret := assertParseSuccess(t, &opts, "-v")
assertStringArray(t, ret, []string{})
if !opts.Value {
t.Errorf("Expected Value to be true")
}
}
func TestShortTooLong(t *testing.T) {
var opts = struct {
Value bool `short:"vv"`
}{}
assertParseFail(t, ErrShortNameTooLong, "short names can only be 1 character long, not `vv'", &opts)
}
func TestShortRequired(t *testing.T) {
var opts = struct {
Value bool `short:"v" required:"true"`
}{}
assertParseFail(t, ErrRequired, fmt.Sprintf("the required flag `%cv' was not specified", defaultShortOptDelimiter), &opts)
}
func TestShortRequiredFalsy1(t *testing.T) {
var opts = struct {
Value bool `short:"v" required:"false"`
}{}
assertParseSuccess(t, &opts)
}
func TestShortRequiredFalsy2(t *testing.T) {
var opts = struct {
Value bool `short:"v" required:"no"`
}{}
assertParseSuccess(t, &opts)
}
func TestShortMultiConcat(t *testing.T) {
var opts = struct {
V bool `short:"v"`
O bool `short:"o"`
F bool `short:"f"`
}{}
ret := assertParseSuccess(t, &opts, "-vo", "-f")
assertStringArray(t, ret, []string{})
if !opts.V {
t.Errorf("Expected V to be true")
}
if !opts.O {
t.Errorf("Expected O to be true")
}
if !opts.F {
t.Errorf("Expected F to be true")
}
}
func TestShortMultiRequiredConcat(t *testing.T) {
var opts = struct {
V bool `short:"v" required:"true"`
O bool `short:"o" required:"true"`
F bool `short:"f" required:"true"`
}{}
ret := assertParseSuccess(t, &opts, "-vo", "-f")
assertStringArray(t, ret, []string{})
if !opts.V {
t.Errorf("Expected V to be true")
}
if !opts.O {
t.Errorf("Expected O to be true")
}
if !opts.F {
t.Errorf("Expected F to be true")
}
}
func TestShortMultiSlice(t *testing.T) {
var opts = struct {
Values []bool `short:"v"`
}{}
ret := assertParseSuccess(t, &opts, "-v", "-v")
assertStringArray(t, ret, []string{})
assertBoolArray(t, opts.Values, []bool{true, true})
}
func TestShortMultiSliceConcat(t *testing.T) {
var opts = struct {
Values []bool `short:"v"`
}{}
ret := assertParseSuccess(t, &opts, "-vvv")
assertStringArray(t, ret, []string{})
assertBoolArray(t, opts.Values, []bool{true, true, true})
}
func TestShortWithEqualArg(t *testing.T) {
var opts = struct {
Value string `short:"v"`
}{}
ret := assertParseSuccess(t, &opts, "-v=value")
assertStringArray(t, ret, []string{})
assertString(t, opts.Value, "value")
}
func TestShortWithArg(t *testing.T) {
var opts = struct {
Value string `short:"v"`
}{}
ret := assertParseSuccess(t, &opts, "-vvalue")
assertStringArray(t, ret, []string{})
assertString(t, opts.Value, "value")
}
func TestShortArg(t *testing.T) {
var opts = struct {
Value string `short:"v"`
}{}
ret := assertParseSuccess(t, &opts, "-v", "value")
assertStringArray(t, ret, []string{})
assertString(t, opts.Value, "value")
}
func TestShortMultiWithEqualArg(t *testing.T) {
var opts = struct {
F []bool `short:"f"`
Value string `short:"v"`
}{}
assertParseFail(t, ErrExpectedArgument, fmt.Sprintf("expected argument for flag `%cv'", defaultShortOptDelimiter), &opts, "-ffv=value")
}
func TestShortMultiArg(t *testing.T) {
var opts = struct {
F []bool `short:"f"`
Value string `short:"v"`
}{}
ret := assertParseSuccess(t, &opts, "-ffv", "value")
assertStringArray(t, ret, []string{})
assertBoolArray(t, opts.F, []bool{true, true})
assertString(t, opts.Value, "value")
}
func TestShortMultiArgConcatFail(t *testing.T) {
var opts = struct {
F []bool `short:"f"`
Value string `short:"v"`
}{}
assertParseFail(t, ErrExpectedArgument, fmt.Sprintf("expected argument for flag `%cv'", defaultShortOptDelimiter), &opts, "-ffvvalue")
}
func TestShortMultiArgConcat(t *testing.T) {
var opts = struct {
F []bool `short:"f"`
Value string `short:"v"`
}{}
ret := assertParseSuccess(t, &opts, "-vff")
assertStringArray(t, ret, []string{})
assertString(t, opts.Value, "ff")
}
func TestShortOptional(t *testing.T) {
var opts = struct {
F []bool `short:"f"`
Value string `short:"v" optional:"yes" optional-value:"value"`
}{}
ret := assertParseSuccess(t, &opts, "-fv", "f")
assertStringArray(t, ret, []string{"f"})
assertString(t, opts.Value, "value")
}
func TestShortOptionalFalsy1(t *testing.T) {
var opts = struct {
F []bool `short:"f"`
Value string `short:"v" optional:"false" optional-value:"value"`
}{}
ret := assertParseSuccess(t, &opts, "-fv", "f")
assertStringArray(t, ret, []string{})
assertString(t, opts.Value, "f")
}
func TestShortOptionalFalsy2(t *testing.T) {
var opts = struct {
F []bool `short:"f"`
Value string `short:"v" optional:"no" optional-value:"value"`
}{}
ret := assertParseSuccess(t, &opts, "-fv", "f")
assertStringArray(t, ret, []string{})
assertString(t, opts.Value, "f")
}

38
vendor/github.com/jessevdk/go-flags/tag_test.go generated vendored Normal file
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package flags
import (
"testing"
)
func TestTagMissingColon(t *testing.T) {
var opts = struct {
Value bool `short`
}{}
assertParseFail(t, ErrTag, "expected `:' after key name, but got end of tag (in `short`)", &opts, "")
}
func TestTagMissingValue(t *testing.T) {
var opts = struct {
Value bool `short:`
}{}
assertParseFail(t, ErrTag, "expected `\"' to start tag value at end of tag (in `short:`)", &opts, "")
}
func TestTagMissingQuote(t *testing.T) {
var opts = struct {
Value bool `short:"v`
}{}
assertParseFail(t, ErrTag, "expected end of tag value `\"' at end of tag (in `short:\"v`)", &opts, "")
}
func TestTagNewline(t *testing.T) {
var opts = struct {
Value bool `long:"verbose" description:"verbose
something"`
}{}
assertParseFail(t, ErrTag, "unexpected newline in tag value `description' (in `long:\"verbose\" description:\"verbose\nsomething\"`)", &opts, "")
}

28
vendor/github.com/jessevdk/go-flags/termsize.go generated vendored Normal file
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@ -0,0 +1,28 @@
// +build !windows,!plan9,!solaris
package flags
import (
"syscall"
"unsafe"
)
type winsize struct {
row, col uint16
xpixel, ypixel uint16
}
func getTerminalColumns() int {
ws := winsize{}
if tIOCGWINSZ != 0 {
syscall.Syscall(syscall.SYS_IOCTL,
uintptr(0),
uintptr(tIOCGWINSZ),
uintptr(unsafe.Pointer(&ws)))
return int(ws.col)
}
return 80
}

7
vendor/github.com/jessevdk/go-flags/termsize_linux.go generated vendored Normal file
View file

@ -0,0 +1,7 @@
// +build linux
package flags
const (
tIOCGWINSZ = 0x5413
)

7
vendor/github.com/jessevdk/go-flags/termsize_nosysioctl.go generated vendored Normal file
View file

@ -0,0 +1,7 @@
// +build windows plan9 solaris
package flags
func getTerminalColumns() int {
return 80
}

7
vendor/github.com/jessevdk/go-flags/termsize_other.go generated vendored Normal file
View file

@ -0,0 +1,7 @@
// +build !darwin,!freebsd,!netbsd,!openbsd,!linux
package flags
const (
tIOCGWINSZ = 0
)

7
vendor/github.com/jessevdk/go-flags/termsize_unix.go generated vendored Normal file
View file

@ -0,0 +1,7 @@
// +build darwin freebsd netbsd openbsd
package flags
const (
tIOCGWINSZ = 0x40087468
)

66
vendor/github.com/jessevdk/go-flags/unknown_test.go generated vendored Normal file
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@ -0,0 +1,66 @@
package flags
import (
"testing"
)
func TestUnknownFlags(t *testing.T) {
var opts = struct {
Verbose []bool `short:"v" long:"verbose" description:"Verbose output"`
}{}
args := []string{
"-f",
}
p := NewParser(&opts, 0)
args, err := p.ParseArgs(args)
if err == nil {
t.Fatal("Expected error for unknown argument")
}
}
func TestIgnoreUnknownFlags(t *testing.T) {
var opts = struct {
Verbose []bool `short:"v" long:"verbose" description:"Verbose output"`
}{}
args := []string{
"hello",
"world",
"-v",
"--foo=bar",
"--verbose",
"-f",
}
p := NewParser(&opts, IgnoreUnknown)
args, err := p.ParseArgs(args)
if err != nil {
t.Fatal(err)
}
exargs := []string{
"hello",
"world",
"--foo=bar",
"-f",
}
issame := (len(args) == len(exargs))
if issame {
for i := 0; i < len(args); i++ {
if args[i] != exargs[i] {
issame = false
break
}
}
}
if !issame {
t.Fatalf("Expected %v but got %v", exargs, args)
}
}

2
vendor/github.com/rakyll/globalconf/.travis.yml generated vendored
View file

@ -1,2 +0,0 @@
language: go
go: 1.5

144
vendor/github.com/rakyll/globalconf/README.md generated vendored
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@ -1,144 +0,0 @@
# globalconf
[![Build Status](https://travis-ci.org/rakyll/globalconf.png?branch=master)](https://travis-ci.org/rakyll/globalconf)
Effortlessly persist/retrieve flags of your Golang programs. If you need global configuration instead of requiring user always to set command line flags, you are looking at the right package. `globalconf` allows your users to not only provide flags, but config files and environment variables as well.
## Usage
~~~ go
import "github.com/rakyll/globalconf"
~~~
### Loading a config file
By default, globalconf provides you a config file under `~/.config/<yourappname>/config.ini`.
~~~ go
globalconf.New("appname") // loads from ~/.config/<appname>/config.ini
~~~
If you don't prefer the default location you can load from a specified path as well.
~~~ go
globalconf.NewWithOptions(&globalconf.Options{
Filename: "/path/to/config/file",
})
~~~
You may like to override configuration with env variables. See "Environment variables" header to see how to it works.
~~~ go
globalconf.NewWithOptions(&globalconf.Options{
Filename: "/path/to/config/file",
EnvPrefix: "APPCONF_",
})
~~~
### Parsing flag values
`globalconf` populates flags with data in the config file if they are not already set.
~~~ go
var (
flagName = flag.String("name", "", "Name of the person.")
flagAddress = flag.String("addr", "", "Address of the person.")
)
~~~
Assume the configuration file to be loaded contains the following lines.
name = Burcu
addr = Brandschenkestrasse 110, 8002
And your program is being started, `$ myapp -name=Jane`
~~~ go
conf, err := globalconf.New("myapp")
conf.ParseAll()
~~~
`*flagName` is going to be equal to `Jane`, whereas `*flagAddress` is `Brandschenkestrasse 110, 8002`, what is provided in the configuration file.
### Custom flag sets
Custom flagsets are supported, but required registration before parse is done. The default flagset `flag.CommandLine` is automatically registered.
~~~ go
globalconf.Register("termopts", termOptsFlagSet)
conf.ParseAll() // parses command line and all registered flag sets
~~~
Custom flagset values should be provided in their own segment. Getting back to the sample ini config file, termopts values will have their own segment.
name = Burcu
addr = Brandschenkestrasse 110, 8002
[termopts]
color = true
background = ff0000
### Environment variables
If an EnvPrefix is provided, environment variables will take precedence over values in the configuration file.
Set the `EnvPrefix` option when calling `globalconf.NewWithOptions`.
An `EnvPrefix` will only be used if it is a non-empty string.
Command line flags will override the environment variables.
~~~ go
opts := globalconf.Options{
EnvPrefix: "MYAPP_",
Filename: "/path/to/config",
}
conf, err := globalconf.NewWithOptions(&opts)
conf.ParseAll()
~~~
With environment variables:
APPCONF_NAME = Burcu
and configuration:
name = Jane
addr = Brandschenkestrasse 110, 8002
`name` will be set to "burcu" and `addr` will be set to "Brandschenkestrasse 110, 8002".
### Modifying stored flags
Modifications are persisted as long as you set a new flag and your GlobalConf
object was configured with a filename.
~~~ go
f := &flag.Flag{Name: "name", Value: val}
conf.Set("", f) // if you are modifying a command line flag
f := &flag.Flag{Name: "color", Value: val}
conf.Set("termopts", color) // if you are modifying a custom flag set flag
~~~
### Deleting stored flags
Like Set, Deletions are persisted as long as you delete a flag's value and your
GlobalConf object was configured with a filename.
~~~ go
conf.Delete("", "name") // removes command line flag "name"s value from config
conf.Delete("termopts", "color") // removes "color"s value from the custom flag set
~~~
## License
Copyright 2014 Google Inc. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. ![Analytics](https://ga-beacon.appspot.com/UA-46881978-1/globalconf?pixel)

177
vendor/github.com/rakyll/globalconf/globalconf.go generated vendored
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@ -1,177 +0,0 @@
package globalconf
import (
"flag"
"io/ioutil"
"os"
"os/user"
"path"
"strings"
ini "github.com/glacjay/goini"
)
const (
defaultConfigFileName = "config.ini"
)
var flags map[string]*flag.FlagSet = make(map[string]*flag.FlagSet)
// Represents a GlobalConf context.
type GlobalConf struct {
Filename string
EnvPrefix string
dict *ini.Dict
}
type Options struct {
Filename string
EnvPrefix string
}
// NewWithOptions creates a GlobalConf from the provided
// Options. The caller is responsible for creating any
// referenced config files.
func NewWithOptions(opts *Options) (g *GlobalConf, err error) {
Register("", flag.CommandLine)
var dict ini.Dict
if opts.Filename != "" {
dict, err = ini.Load(opts.Filename)
if err != nil {
return nil, err
}
} else {
dict = make(ini.Dict, 0)
}
return &GlobalConf{
Filename: opts.Filename,
EnvPrefix: opts.EnvPrefix,
dict: &dict,
}, nil
}
// Opens/creates a config file for the specified appName.
// The path to config file is ~/.config/appName/config.ini.
func New(appName string) (g *GlobalConf, err error) {
var u *user.User
if u, err = user.Current(); u == nil {
return
}
// Create config file's directory.
dirPath := path.Join(u.HomeDir, ".config", appName)
if err = os.MkdirAll(dirPath, 0755); err != nil {
return
}
// Touch a config file if it doesn't exit.
filePath := path.Join(dirPath, defaultConfigFileName)
if _, err = os.Stat(filePath); err != nil {
if !os.IsNotExist(err) {
return
}
// create file
if err = ioutil.WriteFile(filePath, []byte{}, 0644); err != nil {
return
}
}
opts := Options{Filename: filePath}
return NewWithOptions(&opts)
}
// Sets a flag's value and persists the changes to the disk.
func (g *GlobalConf) Set(flagSetName string, f *flag.Flag) error {
g.dict.SetString(flagSetName, f.Name, f.Value.String())
if g.Filename != "" {
return ini.Write(g.Filename, g.dict)
}
return nil
}
// Deletes a flag from config file and persists the changes
// to the disk.
func (g *GlobalConf) Delete(flagSetName, flagName string) error {
g.dict.Delete(flagSetName, flagName)
if g.Filename != "" {
return ini.Write(g.Filename, g.dict)
}
return nil
}
// ParseSet parses the config file for the provided flag set.
// If the flags are already set, values are overwritten
// by the values in the config file. Defaults are not set
// if the flag is not in the file.
func (g *GlobalConf) ParseSet(flagSetName string, set *flag.FlagSet) {
set.VisitAll(func(f *flag.Flag) {
if val, ok := getEnv(g.EnvPrefix, flagSetName, f.Name); ok {
set.Set(f.Name, val)
return
}
val, found := g.dict.GetString(flagSetName, f.Name)
if found {
set.Set(f.Name, val)
}
})
}
// Parse parses all the registered flag sets, including the command
// line set and sets values from the config file if they are
// not already set.
func (g *GlobalConf) Parse() {
for name, set := range flags {
alreadySet := make(map[string]bool)
set.Visit(func(f *flag.Flag) {
alreadySet[f.Name] = true
})
set.VisitAll(func(f *flag.Flag) {
// if not already set, set it from dict if ok
if alreadySet[f.Name] {
return
}
if val, ok := getEnv(g.EnvPrefix, name, f.Name); ok {
set.Set(f.Name, val)
return
}
val, found := g.dict.GetString(name, f.Name)
if found {
set.Set(f.Name, val)
}
})
}
}
// Parses command line flags and then, all of the registered
// flag sets with the values provided in the config file.
func (g *GlobalConf) ParseAll() {
if !flag.Parsed() {
flag.Parse()
}
g.Parse()
}
// Looks up variable in environment
func getEnv(envPrefix, flagSetName, flagName string) (string, bool) {
// If we haven't set an EnvPrefix, don't lookup vals in the ENV
if envPrefix == "" {
return "", false
}
// Append a _ to flagSetName if it exists.
if flagSetName != "" {
flagSetName += "_"
}
flagName = strings.Replace(flagName, ".", "_", -1)
flagName = strings.Replace(flagName, "-", "_", -1)
envKey := strings.ToUpper(envPrefix + flagSetName + flagName)
return os.LookupEnv(envKey)
}
// Register registers a flag set to be parsed. Register all flag sets
// before calling this function. flag.CommandLine is automatically
// registered.
func Register(flagSetName string, set *flag.FlagSet) {
flags[flagSetName] = set
}

283
vendor/github.com/rakyll/globalconf/globalconf_test.go generated vendored
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@ -1,283 +0,0 @@
package globalconf
import (
"flag"
"io/ioutil"
"os"
"testing"
)
const envTestPrefix = "CONFTEST_"
func TestNewWithOptionsNoFilename(t *testing.T) {
opts := Options{EnvPrefix: envTestPrefix}
os.Setenv(envTestPrefix+"D", "EnvD")
flagD := flag.String("d", "default", "")
flagE := flag.Bool("e", true, "")
conf, err := NewWithOptions(&opts)
if err != nil {
t.Fatal(err)
}
conf.ParseAll()
if *flagD != "EnvD" {
t.Errorf("flagD found %v, expected 'EnvD'", *flagD)
}
if !*flagE {
t.Errorf("flagE found %v, expected true", *flagE)
}
}
func TestParse_Global(t *testing.T) {
resetForTesting("")
os.Setenv(envTestPrefix+"D", "EnvD")
os.Setenv(envTestPrefix+"E", "true")
os.Setenv(envTestPrefix+"F", "5.5")
flagA := flag.Bool("a", false, "")
flagB := flag.Float64("b", 0.0, "")
flagC := flag.String("c", "", "")
flagD := flag.String("d", "", "")
flagE := flag.Bool("e", false, "")
flagF := flag.Float64("f", 0.0, "")
parse(t, "./testdata/global.ini", envTestPrefix)
if !*flagA {
t.Errorf("flagA found %v, expected true", *flagA)
}
if *flagB != 5.6 {
t.Errorf("flagB found %v, expected 5.6", *flagB)
}
if *flagC != "Hello world" {
t.Errorf("flagC found %v, expected 'Hello world'", *flagC)
}
if *flagD != "EnvD" {
t.Errorf("flagD found %v, expected 'EnvD'", *flagD)
}
if !*flagE {
t.Errorf("flagE found %v, expected true", *flagE)
}
if *flagF != 5.5 {
t.Errorf("flagF found %v, expected 5.5", *flagF)
}
}
func TestParse_DashConversion(t *testing.T) {
resetForTesting("")
flagFooBar := flag.String("foo-bar", "", "")
os.Setenv("PREFIX_FOO_BAR", "baz")
opts := Options{EnvPrefix: "PREFIX_"}
conf, err := NewWithOptions(&opts)
if err != nil {
t.Fatal(err)
}
conf.ParseAll()
if *flagFooBar != "baz" {
t.Errorf("flagFooBar found %v, expected 5.5", *flagFooBar)
}
}
func TestParse_GlobalWithDottedFlagname(t *testing.T) {
resetForTesting("")
os.Setenv(envTestPrefix+"SOME_VALUE", "some-value")
flagSomeValue := flag.String("some.value", "", "")
parse(t, "./testdata/global.ini", envTestPrefix)
if *flagSomeValue != "some-value" {
t.Errorf("flagSomeValue found %v, some-value expected", *flagSomeValue)
}
}
// Given the need to test overwriting a flag with an environmental variable set to an empty string
// Reset the flags and clear the env.
// Set the env var for the c flag to an empty string.
// Expect flagC to an empty string and not be the value Hello World from the INI file.
func TestParse_GlobalWithEmptyValue(t *testing.T) {
resetForTesting("")
os.Setenv(envTestPrefix+"C", "")
flagC := flag.String("c", "", "")
parse(t, "./testdata/global.ini", envTestPrefix)
if got, want := *flagC, ""; got != want {
t.Errorf("got flag = %q, want empty string", got)
}
}
func TestParse_GlobalOverwrite(t *testing.T) {
resetForTesting("-b=7.6")
flagB := flag.Float64("b", 0.0, "")
parse(t, "./testdata/global.ini", "")
if *flagB != 7.6 {
t.Errorf("flagB found %v, expected 7.6", *flagB)
}
}
func TestParse_Custom(t *testing.T) {
resetForTesting("")
os.Setenv(envTestPrefix+"CUSTOM_E", "Hello Env")
flagB := flag.Float64("b", 5.0, "")
name := "custom"
custom := flag.NewFlagSet(name, flag.ExitOnError)
flagD := custom.String("d", "dd", "")
flagE := custom.String("e", "ee", "")
Register(name, custom)
parse(t, "./testdata/custom.ini", envTestPrefix)
if *flagB != 5.0 {
t.Errorf("flagB found %v, expected 5.0", *flagB)
}
if *flagD != "Hello d" {
t.Errorf("flagD found %v, expected 'Hello d'", *flagD)
}
if *flagE != "Hello Env" {
t.Errorf("flagE found %v, expected 'Hello Env'", *flagE)
}
}
func TestParse_CustomOverwrite(t *testing.T) {
resetForTesting("-b=6")
flagB := flag.Float64("b", 5.0, "")
name := "custom"
custom := flag.NewFlagSet(name, flag.ExitOnError)
flagD := custom.String("d", "dd", "")
Register(name, custom)
parse(t, "./testdata/custom.ini", "")
if *flagB != 6.0 {
t.Errorf("flagB found %v, expected 6.0", *flagB)
}
if *flagD != "Hello d" {
t.Errorf("flagD found %v, expected 'Hello d'", *flagD)
}
}
func TestParse_GlobalAndCustom(t *testing.T) {
resetForTesting("")
flagA := flag.Bool("a", false, "")
flagB := flag.Float64("b", 0.0, "")
flagC := flag.String("c", "", "")
name := "custom"
custom := flag.NewFlagSet(name, flag.ExitOnError)
flagD := custom.String("d", "", "")
Register(name, custom)
parse(t, "./testdata/globalandcustom.ini", "")
if !*flagA {
t.Errorf("flagA found %v, expected true", *flagA)
}
if *flagB != 5.6 {
t.Errorf("flagB found %v, expected 5.6", *flagB)
}
if *flagC != "Hello world" {
t.Errorf("flagC found %v, expected 'Hello world'", *flagC)
}
if *flagD != "Hello d" {
t.Errorf("flagD found %v, expected 'Hello d'", *flagD)
}
}
func TestParse_GlobalAndCustomOverwrite(t *testing.T) {
resetForTesting("-a=true", "-b=5", "-c=Hello")
flagA := flag.Bool("a", false, "")
flagB := flag.Float64("b", 0.0, "")
flagC := flag.String("c", "", "")
name := "custom"
custom := flag.NewFlagSet(name, flag.ExitOnError)
flagD := custom.String("d", "", "")
Register(name, custom)
parse(t, "./testdata/globalandcustom.ini", "")
if !*flagA {
t.Errorf("flagA found %v, expected true", *flagA)
}
if *flagB != 5.0 {
t.Errorf("flagB found %v, expected 5.0", *flagB)
}
if *flagC != "Hello" {
t.Errorf("flagC found %v, expected 'Hello'", *flagC)
}
if *flagD != "Hello d" {
t.Errorf("flagD found %v, expected 'Hello d'", *flagD)
}
}
func TestSet(t *testing.T) {
resetForTesting()
file, _ := ioutil.TempFile("", "")
conf := parse(t, file.Name(), "")
conf.Set("", &flag.Flag{Name: "a", Value: newFlagValue("test")})
flagA := flag.String("a", "", "")
parse(t, file.Name(), "")
if *flagA != "test" {
t.Errorf("flagA found %v, expected 'test'", *flagA)
}
}
func TestDelete(t *testing.T) {
resetForTesting()
file, _ := ioutil.TempFile("", "")
conf := parse(t, file.Name(), "")
conf.Set("", &flag.Flag{Name: "a", Value: newFlagValue("test")})
conf.Delete("", "a")
flagA := flag.String("a", "", "")
parse(t, file.Name(), "")
if *flagA != "" {
t.Errorf("flagNewA found %v, expected ''", *flagA)
}
}
func parse(t *testing.T, filename, envPrefix string) *GlobalConf {
opts := Options{
Filename: filename,
EnvPrefix: envPrefix,
}
conf, err := NewWithOptions(&opts)
if err != nil {
t.Error(err)
}
conf.ParseAll()
return conf
}
// Resets os.Args and the default flag set.
func resetForTesting(args ...string) {
os.Clearenv()
os.Args = append([]string{"cmd"}, args...)
flag.CommandLine = flag.NewFlagSet(os.Args[0], flag.ExitOnError)
}
type flagValue struct {
str string
}
func (f *flagValue) String() string {
return f.str
}
func (f *flagValue) Set(value string) error {
f.str = value
return nil
}
func newFlagValue(val string) *flagValue {
return &flagValue{str: val}
}

2
vendor/github.com/rakyll/globalconf/testdata/custom.ini generated vendored
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@ -1,2 +0,0 @@
[custom]
d = Hello d

3
vendor/github.com/rakyll/globalconf/testdata/global.ini generated vendored
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@ -1,3 +0,0 @@
a = true
b = 5.6
c = Hello world

6
vendor/github.com/rakyll/globalconf/testdata/globalandcustom.ini generated vendored
View file

@ -1,6 +0,0 @@
a = true
b = 5.6
c = Hello world
[custom]
d = Hello d

2
vendor/github.com/spf13/pflag/.gitignore generated vendored
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@ -1,2 +0,0 @@
.idea/*

21
vendor/github.com/spf13/pflag/.travis.yml generated vendored
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@ -1,21 +0,0 @@
sudo: false
language: go
go:
- 1.7.3
- 1.8.1
- tip
matrix:
allow_failures:
- go: tip
install:
- go get github.com/golang/lint/golint
- export PATH=$GOPATH/bin:$PATH
- go install ./...
script:
- verify/all.sh -v
- go test ./...

296
vendor/github.com/spf13/pflag/README.md generated vendored
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@ -1,296 +0,0 @@
[![Build Status](https://travis-ci.org/spf13/pflag.svg?branch=master)](https://travis-ci.org/spf13/pflag)
[![Go Report Card](https://goreportcard.com/badge/github.com/spf13/pflag)](https://goreportcard.com/report/github.com/spf13/pflag)
[![GoDoc](https://godoc.org/github.com/spf13/pflag?status.svg)](https://godoc.org/github.com/spf13/pflag)
## Description
pflag is a drop-in replacement for Go's flag package, implementing
POSIX/GNU-style --flags.
pflag is compatible with the [GNU extensions to the POSIX recommendations
for command-line options][1]. For a more precise description, see the
"Command-line flag syntax" section below.
[1]: http://www.gnu.org/software/libc/manual/html_node/Argument-Syntax.html
pflag is available under the same style of BSD license as the Go language,
which can be found in the LICENSE file.
## Installation
pflag is available using the standard `go get` command.
Install by running:
go get github.com/spf13/pflag
Run tests by running:
go test github.com/spf13/pflag
## Usage
pflag is a drop-in replacement of Go's native flag package. If you import
pflag under the name "flag" then all code should continue to function
with no changes.
``` go
import flag "github.com/spf13/pflag"
```
There is one exception to this: if you directly instantiate the Flag struct
there is one more field "Shorthand" that you will need to set.
Most code never instantiates this struct directly, and instead uses
functions such as String(), BoolVar(), and Var(), and is therefore
unaffected.
Define flags using flag.String(), Bool(), Int(), etc.
This declares an integer flag, -flagname, stored in the pointer ip, with type *int.
``` go
var ip *int = flag.Int("flagname", 1234, "help message for flagname")
```
If you like, you can bind the flag to a variable using the Var() functions.
``` go
var flagvar int
func init() {
flag.IntVar(&flagvar, "flagname", 1234, "help message for flagname")
}
```
Or you can create custom flags that satisfy the Value interface (with
pointer receivers) and couple them to flag parsing by
``` go
flag.Var(&flagVal, "name", "help message for flagname")
```
For such flags, the default value is just the initial value of the variable.
After all flags are defined, call
``` go
flag.Parse()
```
to parse the command line into the defined flags.
Flags may then be used directly. If you're using the flags themselves,
they are all pointers; if you bind to variables, they're values.
``` go
fmt.Println("ip has value ", *ip)
fmt.Println("flagvar has value ", flagvar)
```
There are helpers function to get values later if you have the FlagSet but
it was difficult to keep up with all of the flag pointers in your code.
If you have a pflag.FlagSet with a flag called 'flagname' of type int you
can use GetInt() to get the int value. But notice that 'flagname' must exist
and it must be an int. GetString("flagname") will fail.
``` go
i, err := flagset.GetInt("flagname")
```
After parsing, the arguments after the flag are available as the
slice flag.Args() or individually as flag.Arg(i).
The arguments are indexed from 0 through flag.NArg()-1.
The pflag package also defines some new functions that are not in flag,
that give one-letter shorthands for flags. You can use these by appending
'P' to the name of any function that defines a flag.
``` go
var ip = flag.IntP("flagname", "f", 1234, "help message")
var flagvar bool
func init() {
flag.BoolVarP(&flagvar, "boolname", "b", true, "help message")
}
flag.VarP(&flagVal, "varname", "v", "help message")
```
Shorthand letters can be used with single dashes on the command line.
Boolean shorthand flags can be combined with other shorthand flags.
The default set of command-line flags is controlled by
top-level functions. The FlagSet type allows one to define
independent sets of flags, such as to implement subcommands
in a command-line interface. The methods of FlagSet are
analogous to the top-level functions for the command-line
flag set.
## Setting no option default values for flags
After you create a flag it is possible to set the pflag.NoOptDefVal for
the given flag. Doing this changes the meaning of the flag slightly. If
a flag has a NoOptDefVal and the flag is set on the command line without
an option the flag will be set to the NoOptDefVal. For example given:
``` go
var ip = flag.IntP("flagname", "f", 1234, "help message")
flag.Lookup("flagname").NoOptDefVal = "4321"
```
Would result in something like
| Parsed Arguments | Resulting Value |
| ------------- | ------------- |
| --flagname=1357 | ip=1357 |
| --flagname | ip=4321 |
| [nothing] | ip=1234 |
## Command line flag syntax
```
--flag // boolean flags, or flags with no option default values
--flag x // only on flags without a default value
--flag=x
```
Unlike the flag package, a single dash before an option means something
different than a double dash. Single dashes signify a series of shorthand
letters for flags. All but the last shorthand letter must be boolean flags
or a flag with a default value
```
// boolean or flags where the 'no option default value' is set
-f
-f=true
-abc
but
-b true is INVALID
// non-boolean and flags without a 'no option default value'
-n 1234
-n=1234
-n1234
// mixed
-abcs "hello"
-absd="hello"
-abcs1234
```
Flag parsing stops after the terminator "--". Unlike the flag package,
flags can be interspersed with arguments anywhere on the command line
before this terminator.
Integer flags accept 1234, 0664, 0x1234 and may be negative.
Boolean flags (in their long form) accept 1, 0, t, f, true, false,
TRUE, FALSE, True, False.
Duration flags accept any input valid for time.ParseDuration.
## Mutating or "Normalizing" Flag names
It is possible to set a custom flag name 'normalization function.' It allows flag names to be mutated both when created in the code and when used on the command line to some 'normalized' form. The 'normalized' form is used for comparison. Two examples of using the custom normalization func follow.
**Example #1**: You want -, _, and . in flags to compare the same. aka --my-flag == --my_flag == --my.flag
``` go
func wordSepNormalizeFunc(f *pflag.FlagSet, name string) pflag.NormalizedName {
from := []string{"-", "_"}
to := "."
for _, sep := range from {
name = strings.Replace(name, sep, to, -1)
}
return pflag.NormalizedName(name)
}
myFlagSet.SetNormalizeFunc(wordSepNormalizeFunc)
```
**Example #2**: You want to alias two flags. aka --old-flag-name == --new-flag-name
``` go
func aliasNormalizeFunc(f *pflag.FlagSet, name string) pflag.NormalizedName {
switch name {
case "old-flag-name":
name = "new-flag-name"
break
}
return pflag.NormalizedName(name)
}
myFlagSet.SetNormalizeFunc(aliasNormalizeFunc)
```
## Deprecating a flag or its shorthand
It is possible to deprecate a flag, or just its shorthand. Deprecating a flag/shorthand hides it from help text and prints a usage message when the deprecated flag/shorthand is used.
**Example #1**: You want to deprecate a flag named "badflag" as well as inform the users what flag they should use instead.
```go
// deprecate a flag by specifying its name and a usage message
flags.MarkDeprecated("badflag", "please use --good-flag instead")
```
This hides "badflag" from help text, and prints `Flag --badflag has been deprecated, please use --good-flag instead` when "badflag" is used.
**Example #2**: You want to keep a flag name "noshorthandflag" but deprecate its shortname "n".
```go
// deprecate a flag shorthand by specifying its flag name and a usage message
flags.MarkShorthandDeprecated("noshorthandflag", "please use --noshorthandflag only")
```
This hides the shortname "n" from help text, and prints `Flag shorthand -n has been deprecated, please use --noshorthandflag only` when the shorthand "n" is used.
Note that usage message is essential here, and it should not be empty.
## Hidden flags
It is possible to mark a flag as hidden, meaning it will still function as normal, however will not show up in usage/help text.
**Example**: You have a flag named "secretFlag" that you need for internal use only and don't want it showing up in help text, or for its usage text to be available.
```go
// hide a flag by specifying its name
flags.MarkHidden("secretFlag")
```
## Disable sorting of flags
`pflag` allows you to disable sorting of flags for help and usage message.
**Example**:
```go
flags.BoolP("verbose", "v", false, "verbose output")
flags.String("coolflag", "yeaah", "it's really cool flag")
flags.Int("usefulflag", 777, "sometimes it's very useful")
flags.SortFlags = false
flags.PrintDefaults()
```
**Output**:
```
-v, --verbose verbose output
--coolflag string it's really cool flag (default "yeaah")
--usefulflag int sometimes it's very useful (default 777)
```
## Supporting Go flags when using pflag
In order to support flags defined using Go's `flag` package, they must be added to the `pflag` flagset. This is usually necessary
to support flags defined by third-party dependencies (e.g. `golang/glog`).
**Example**: You want to add the Go flags to the `CommandLine` flagset
```go
import (
goflag "flag"
flag "github.com/spf13/pflag"
)
var ip *int = flag.Int("flagname", 1234, "help message for flagname")
func main() {
flag.CommandLine.AddGoFlagSet(goflag.CommandLine)
flag.Parse()
}
```
## More info
You can see the full reference documentation of the pflag package
[at godoc.org][3], or through go's standard documentation system by
running `godoc -http=:6060` and browsing to
[http://localhost:6060/pkg/github.com/spf13/pflag][2] after
installation.
[2]: http://localhost:6060/pkg/github.com/spf13/pflag
[3]: http://godoc.org/github.com/spf13/pflag

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package pflag
import "strconv"
// optional interface to indicate boolean flags that can be
// supplied without "=value" text
type boolFlag interface {
Value
IsBoolFlag() bool
}
// -- bool Value
type boolValue bool
func newBoolValue(val bool, p *bool) *boolValue {
*p = val
return (*boolValue)(p)
}
func (b *boolValue) Set(s string) error {
v, err := strconv.ParseBool(s)
*b = boolValue(v)
return err
}
func (b *boolValue) Type() string {
return "bool"
}
func (b *boolValue) String() string { return strconv.FormatBool(bool(*b)) }
func (b *boolValue) IsBoolFlag() bool { return true }
func boolConv(sval string) (interface{}, error) {
return strconv.ParseBool(sval)
}
// GetBool return the bool value of a flag with the given name
func (f *FlagSet) GetBool(name string) (bool, error) {
val, err := f.getFlagType(name, "bool", boolConv)
if err != nil {
return false, err
}
return val.(bool), nil
}
// BoolVar defines a bool flag with specified name, default value, and usage string.
// The argument p points to a bool variable in which to store the value of the flag.
func (f *FlagSet) BoolVar(p *bool, name string, value bool, usage string) {
f.BoolVarP(p, name, "", value, usage)
}
// BoolVarP is like BoolVar, but accepts a shorthand letter that can be used after a single dash.
func (f *FlagSet) BoolVarP(p *bool, name, shorthand string, value bool, usage string) {
flag := f.VarPF(newBoolValue(value, p), name, shorthand, usage)
flag.NoOptDefVal = "true"
}
// BoolVar defines a bool flag with specified name, default value, and usage string.
// The argument p points to a bool variable in which to store the value of the flag.
func BoolVar(p *bool, name string, value bool, usage string) {
BoolVarP(p, name, "", value, usage)
}
// BoolVarP is like BoolVar, but accepts a shorthand letter that can be used after a single dash.
func BoolVarP(p *bool, name, shorthand string, value bool, usage string) {
flag := CommandLine.VarPF(newBoolValue(value, p), name, shorthand, usage)
flag.NoOptDefVal = "true"
}
// Bool defines a bool flag with specified name, default value, and usage string.
// The return value is the address of a bool variable that stores the value of the flag.
func (f *FlagSet) Bool(name string, value bool, usage string) *bool {
return f.BoolP(name, "", value, usage)
}
// BoolP is like Bool, but accepts a shorthand letter that can be used after a single dash.
func (f *FlagSet) BoolP(name, shorthand string, value bool, usage string) *bool {
p := new(bool)
f.BoolVarP(p, name, shorthand, value, usage)
return p
}
// Bool defines a bool flag with specified name, default value, and usage string.
// The return value is the address of a bool variable that stores the value of the flag.
func Bool(name string, value bool, usage string) *bool {
return BoolP(name, "", value, usage)
}
// BoolP is like Bool, but accepts a shorthand letter that can be used after a single dash.
func BoolP(name, shorthand string, value bool, usage string) *bool {
b := CommandLine.BoolP(name, shorthand, value, usage)
return b
}

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vendor/github.com/spf13/pflag/bool_slice.go generated vendored
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@ -1,147 +0,0 @@
package pflag
import (
"io"
"strconv"
"strings"
)
// -- boolSlice Value
type boolSliceValue struct {
value *[]bool
changed bool
}
func newBoolSliceValue(val []bool, p *[]bool) *boolSliceValue {
bsv := new(boolSliceValue)
bsv.value = p
*bsv.value = val
return bsv
}
// Set converts, and assigns, the comma-separated boolean argument string representation as the []bool value of this flag.
// If Set is called on a flag that already has a []bool assigned, the newly converted values will be appended.
func (s *boolSliceValue) Set(val string) error {
// remove all quote characters
rmQuote := strings.NewReplacer(`"`, "", `'`, "", "`", "")
// read flag arguments with CSV parser
boolStrSlice, err := readAsCSV(rmQuote.Replace(val))
if err != nil && err != io.EOF {
return err
}
// parse boolean values into slice
out := make([]bool, 0, len(boolStrSlice))
for _, boolStr := range boolStrSlice {
b, err := strconv.ParseBool(strings.TrimSpace(boolStr))
if err != nil {
return err
}
out = append(out, b)
}
if !s.changed {
*s.value = out
} else {
*s.value = append(*s.value, out...)
}
s.changed = true
return nil
}
// Type returns a string that uniquely represents this flag's type.
func (s *boolSliceValue) Type() string {
return "boolSlice"
}
// String defines a "native" format for this boolean slice flag value.
func (s *boolSliceValue) String() string {
boolStrSlice := make([]string, len(*s.value))
for i, b := range *s.value {
boolStrSlice[i] = strconv.FormatBool(b)
}
out, _ := writeAsCSV(boolStrSlice)
return "[" + out + "]"
}
func boolSliceConv(val string) (interface{}, error) {
val = strings.Trim(val, "[]")
// Empty string would cause a slice with one (empty) entry
if len(val) == 0 {
return []bool{}, nil
}
ss := strings.Split(val, ",")
out := make([]bool, len(ss))
for i, t := range ss {
var err error
out[i], err = strconv.ParseBool(t)
if err != nil {
return nil, err
}
}
return out, nil
}
// GetBoolSlice returns the []bool value of a flag with the given name.
func (f *FlagSet) GetBoolSlice(name string) ([]bool, error) {
val, err := f.getFlagType(name, "boolSlice", boolSliceConv)
if err != nil {
return []bool{}, err
}
return val.([]bool), nil
}
// BoolSliceVar defines a boolSlice flag with specified name, default value, and usage string.
// The argument p points to a []bool variable in which to store the value of the flag.
func (f *FlagSet) BoolSliceVar(p *[]bool, name string, value []bool, usage string) {
f.VarP(newBoolSliceValue(value, p), name, "", usage)
}
// BoolSliceVarP is like BoolSliceVar, but accepts a shorthand letter that can be used after a single dash.
func (f *FlagSet) BoolSliceVarP(p *[]bool, name, shorthand string, value []bool, usage string) {
f.VarP(newBoolSliceValue(value, p), name, shorthand, usage)
}
// BoolSliceVar defines a []bool flag with specified name, default value, and usage string.
// The argument p points to a []bool variable in which to store the value of the flag.
func BoolSliceVar(p *[]bool, name string, value []bool, usage string) {
CommandLine.VarP(newBoolSliceValue(value, p), name, "", usage)
}
// BoolSliceVarP is like BoolSliceVar, but accepts a shorthand letter that can be used after a single dash.
func BoolSliceVarP(p *[]bool, name, shorthand string, value []bool, usage string) {
CommandLine.VarP(newBoolSliceValue(value, p), name, shorthand, usage)
}
// BoolSlice defines a []bool flag with specified name, default value, and usage string.
// The return value is the address of a []bool variable that stores the value of the flag.
func (f *FlagSet) BoolSlice(name string, value []bool, usage string) *[]bool {
p := []bool{}
f.BoolSliceVarP(&p, name, "", value, usage)
return &p
}
// BoolSliceP is like BoolSlice, but accepts a shorthand letter that can be used after a single dash.
func (f *FlagSet) BoolSliceP(name, shorthand string, value []bool, usage string) *[]bool {
p := []bool{}
f.BoolSliceVarP(&p, name, shorthand, value, usage)
return &p
}
// BoolSlice defines a []bool flag with specified name, default value, and usage string.
// The return value is the address of a []bool variable that stores the value of the flag.
func BoolSlice(name string, value []bool, usage string) *[]bool {
return CommandLine.BoolSliceP(name, "", value, usage)
}
// BoolSliceP is like BoolSlice, but accepts a shorthand letter that can be used after a single dash.
func BoolSliceP(name, shorthand string, value []bool, usage string) *[]bool {
return CommandLine.BoolSliceP(name, shorthand, value, usage)
}

215
vendor/github.com/spf13/pflag/bool_slice_test.go generated vendored
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@ -1,215 +0,0 @@
package pflag
import (
"fmt"
"strconv"
"strings"
"testing"
)
func setUpBSFlagSet(bsp *[]bool) *FlagSet {
f := NewFlagSet("test", ContinueOnError)
f.BoolSliceVar(bsp, "bs", []bool{}, "Command separated list!")
return f
}
func setUpBSFlagSetWithDefault(bsp *[]bool) *FlagSet {
f := NewFlagSet("test", ContinueOnError)
f.BoolSliceVar(bsp, "bs", []bool{false, true}, "Command separated list!")
return f
}
func TestEmptyBS(t *testing.T) {
var bs []bool
f := setUpBSFlagSet(&bs)
err := f.Parse([]string{})
if err != nil {
t.Fatal("expected no error; got", err)
}
getBS, err := f.GetBoolSlice("bs")
if err != nil {
t.Fatal("got an error from GetBoolSlice():", err)
}
if len(getBS) != 0 {
t.Fatalf("got bs %v with len=%d but expected length=0", getBS, len(getBS))
}
}
func TestBS(t *testing.T) {
var bs []bool
f := setUpBSFlagSet(&bs)
vals := []string{"1", "F", "TRUE", "0"}
arg := fmt.Sprintf("--bs=%s", strings.Join(vals, ","))
err := f.Parse([]string{arg})
if err != nil {
t.Fatal("expected no error; got", err)
}
for i, v := range bs {
b, err := strconv.ParseBool(vals[i])
if err != nil {
t.Fatalf("got error: %v", err)
}
if b != v {
t.Fatalf("expected is[%d] to be %s but got: %t", i, vals[i], v)
}
}
getBS, err := f.GetBoolSlice("bs")
if err != nil {
t.Fatalf("got error: %v", err)
}
for i, v := range getBS {
b, err := strconv.ParseBool(vals[i])
if err != nil {
t.Fatalf("got error: %v", err)
}
if b != v {
t.Fatalf("expected bs[%d] to be %s but got: %t from GetBoolSlice", i, vals[i], v)
}
}
}
func TestBSDefault(t *testing.T) {
var bs []bool
f := setUpBSFlagSetWithDefault(&bs)
vals := []string{"false", "T"}
err := f.Parse([]string{})
if err != nil {
t.Fatal("expected no error; got", err)
}
for i, v := range bs {
b, err := strconv.ParseBool(vals[i])
if err != nil {
t.Fatalf("got error: %v", err)
}
if b != v {
t.Fatalf("expected bs[%d] to be %t from GetBoolSlice but got: %t", i, b, v)
}
}
getBS, err := f.GetBoolSlice("bs")
if err != nil {
t.Fatal("got an error from GetBoolSlice():", err)
}
for i, v := range getBS {
b, err := strconv.ParseBool(vals[i])
if err != nil {
t.Fatal("got an error from GetBoolSlice():", err)
}
if b != v {
t.Fatalf("expected bs[%d] to be %t from GetBoolSlice but got: %t", i, b, v)
}
}
}
func TestBSWithDefault(t *testing.T) {
var bs []bool
f := setUpBSFlagSetWithDefault(&bs)
vals := []string{"FALSE", "1"}
arg := fmt.Sprintf("--bs=%s", strings.Join(vals, ","))
err := f.Parse([]string{arg})
if err != nil {
t.Fatal("expected no error; got", err)
}
for i, v := range bs {
b, err := strconv.ParseBool(vals[i])
if err != nil {
t.Fatalf("got error: %v", err)
}
if b != v {
t.Fatalf("expected bs[%d] to be %t but got: %t", i, b, v)
}
}
getBS, err := f.GetBoolSlice("bs")
if err != nil {
t.Fatal("got an error from GetBoolSlice():", err)
}
for i, v := range getBS {
b, err := strconv.ParseBool(vals[i])
if err != nil {
t.Fatalf("got error: %v", err)
}
if b != v {
t.Fatalf("expected bs[%d] to be %t from GetBoolSlice but got: %t", i, b, v)
}
}
}
func TestBSCalledTwice(t *testing.T) {
var bs []bool
f := setUpBSFlagSet(&bs)
in := []string{"T,F", "T"}
expected := []bool{true, false, true}
argfmt := "--bs=%s"
arg1 := fmt.Sprintf(argfmt, in[0])
arg2 := fmt.Sprintf(argfmt, in[1])
err := f.Parse([]string{arg1, arg2})
if err != nil {
t.Fatal("expected no error; got", err)
}
for i, v := range bs {
if expected[i] != v {
t.Fatalf("expected bs[%d] to be %t but got %t", i, expected[i], v)
}
}
}
func TestBSBadQuoting(t *testing.T) {
tests := []struct {
Want []bool
FlagArg []string
}{
{
Want: []bool{true, false, true},
FlagArg: []string{"1", "0", "true"},
},
{
Want: []bool{true, false},
FlagArg: []string{"True", "F"},
},
{
Want: []bool{true, false},
FlagArg: []string{"T", "0"},
},
{
Want: []bool{true, false},
FlagArg: []string{"1", "0"},
},
{
Want: []bool{true, false, false},
FlagArg: []string{"true,false", "false"},
},
{
Want: []bool{true, false, false, true, false, true, false},
FlagArg: []string{`"true,false,false,1,0, T"`, " false "},
},
{
Want: []bool{false, false, true, false, true, false, true},
FlagArg: []string{`"0, False, T,false , true,F"`, "true"},
},
}
for i, test := range tests {
var bs []bool
f := setUpBSFlagSet(&bs)
if err := f.Parse([]string{fmt.Sprintf("--bs=%s", strings.Join(test.FlagArg, ","))}); err != nil {
t.Fatalf("flag parsing failed with error: %s\nparsing:\t%#v\nwant:\t\t%#v",
err, test.FlagArg, test.Want[i])
}
for j, b := range bs {
if b != test.Want[j] {
t.Fatalf("bad value parsed for test %d on bool %d:\nwant:\t%t\ngot:\t%t", i, j, test.Want[j], b)
}
}
}
}

179
vendor/github.com/spf13/pflag/bool_test.go generated vendored
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@ -1,179 +0,0 @@
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package pflag
import (
"bytes"
"strconv"
"testing"
)
// This value can be a boolean ("true", "false") or "maybe"
type triStateValue int
const (
triStateFalse triStateValue = 0
triStateTrue triStateValue = 1
triStateMaybe triStateValue = 2
)
const strTriStateMaybe = "maybe"
func (v *triStateValue) IsBoolFlag() bool {
return true
}
func (v *triStateValue) Get() interface{} {
return triStateValue(*v)
}
func (v *triStateValue) Set(s string) error {
if s == strTriStateMaybe {
*v = triStateMaybe
return nil
}
boolVal, err := strconv.ParseBool(s)
if boolVal {
*v = triStateTrue
} else {
*v = triStateFalse
}
return err
}
func (v *triStateValue) String() string {
if *v == triStateMaybe {
return strTriStateMaybe
}
return strconv.FormatBool(*v == triStateTrue)
}
// The type of the flag as required by the pflag.Value interface
func (v *triStateValue) Type() string {
return "version"
}
func setUpFlagSet(tristate *triStateValue) *FlagSet {
f := NewFlagSet("test", ContinueOnError)
*tristate = triStateFalse
flag := f.VarPF(tristate, "tristate", "t", "tristate value (true, maybe or false)")
flag.NoOptDefVal = "true"
return f
}
func TestExplicitTrue(t *testing.T) {
var tristate triStateValue
f := setUpFlagSet(&tristate)
err := f.Parse([]string{"--tristate=true"})
if err != nil {
t.Fatal("expected no error; got", err)
}
if tristate != triStateTrue {
t.Fatal("expected", triStateTrue, "(triStateTrue) but got", tristate, "instead")
}
}
func TestImplicitTrue(t *testing.T) {
var tristate triStateValue
f := setUpFlagSet(&tristate)
err := f.Parse([]string{"--tristate"})
if err != nil {
t.Fatal("expected no error; got", err)
}
if tristate != triStateTrue {
t.Fatal("expected", triStateTrue, "(triStateTrue) but got", tristate, "instead")
}
}
func TestShortFlag(t *testing.T) {
var tristate triStateValue
f := setUpFlagSet(&tristate)
err := f.Parse([]string{"-t"})
if err != nil {
t.Fatal("expected no error; got", err)
}
if tristate != triStateTrue {
t.Fatal("expected", triStateTrue, "(triStateTrue) but got", tristate, "instead")
}
}
func TestShortFlagExtraArgument(t *testing.T) {
var tristate triStateValue
f := setUpFlagSet(&tristate)
// The"maybe"turns into an arg, since short boolean options will only do true/false
err := f.Parse([]string{"-t", "maybe"})
if err != nil {
t.Fatal("expected no error; got", err)
}
if tristate != triStateTrue {
t.Fatal("expected", triStateTrue, "(triStateTrue) but got", tristate, "instead")
}
args := f.Args()
if len(args) != 1 || args[0] != "maybe" {
t.Fatal("expected an extra 'maybe' argument to stick around")
}
}
func TestExplicitMaybe(t *testing.T) {
var tristate triStateValue
f := setUpFlagSet(&tristate)
err := f.Parse([]string{"--tristate=maybe"})
if err != nil {
t.Fatal("expected no error; got", err)
}
if tristate != triStateMaybe {
t.Fatal("expected", triStateMaybe, "(triStateMaybe) but got", tristate, "instead")
}
}
func TestExplicitFalse(t *testing.T) {
var tristate triStateValue
f := setUpFlagSet(&tristate)
err := f.Parse([]string{"--tristate=false"})
if err != nil {
t.Fatal("expected no error; got", err)
}
if tristate != triStateFalse {
t.Fatal("expected", triStateFalse, "(triStateFalse) but got", tristate, "instead")
}
}
func TestImplicitFalse(t *testing.T) {
var tristate triStateValue
f := setUpFlagSet(&tristate)
err := f.Parse([]string{})
if err != nil {
t.Fatal("expected no error; got", err)
}
if tristate != triStateFalse {
t.Fatal("expected", triStateFalse, "(triStateFalse) but got", tristate, "instead")
}
}
func TestInvalidValue(t *testing.T) {
var tristate triStateValue
f := setUpFlagSet(&tristate)
var buf bytes.Buffer
f.SetOutput(&buf)
err := f.Parse([]string{"--tristate=invalid"})
if err == nil {
t.Fatal("expected an error but did not get any, tristate has value", tristate)
}
}
func TestBoolP(t *testing.T) {
b := BoolP("bool", "b", false, "bool value in CommandLine")
c := BoolP("c", "c", false, "other bool value")
args := []string{"--bool"}
if err := CommandLine.Parse(args); err != nil {
t.Error("expected no error, got ", err)
}
if *b != true {
t.Errorf("expected b=true got b=%v", *b)
}
if *c != false {
t.Errorf("expect c=false got c=%v", *c)
}
}

96
vendor/github.com/spf13/pflag/count.go generated vendored
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@ -1,96 +0,0 @@
package pflag
import "strconv"
// -- count Value
type countValue int
func newCountValue(val int, p *int) *countValue {
*p = val
return (*countValue)(p)
}
func (i *countValue) Set(s string) error {
v, err := strconv.ParseInt(s, 0, 64)
// -1 means that no specific value was passed, so increment
if v == -1 {
*i = countValue(*i + 1)
} else {
*i = countValue(v)
}
return err
}
func (i *countValue) Type() string {
return "count"
}
func (i *countValue) String() string { return strconv.Itoa(int(*i)) }
func countConv(sval string) (interface{}, error) {
i, err := strconv.Atoi(sval)
if err != nil {
return nil, err
}
return i, nil
}
// GetCount return the int value of a flag with the given name
func (f *FlagSet) GetCount(name string) (int, error) {
val, err := f.getFlagType(name, "count", countConv)
if err != nil {
return 0, err
}
return val.(int), nil
}
// CountVar defines a count flag with specified name, default value, and usage string.
// The argument p points to an int variable in which to store the value of the flag.
// A count flag will add 1 to its value evey time it is found on the command line
func (f *FlagSet) CountVar(p *int, name string, usage string) {
f.CountVarP(p, name, "", usage)
}
// CountVarP is like CountVar only take a shorthand for the flag name.
func (f *FlagSet) CountVarP(p *int, name, shorthand string, usage string) {
flag := f.VarPF(newCountValue(0, p), name, shorthand, usage)
flag.NoOptDefVal = "-1"
}
// CountVar like CountVar only the flag is placed on the CommandLine instead of a given flag set
func CountVar(p *int, name string, usage string) {
CommandLine.CountVar(p, name, usage)
}
// CountVarP is like CountVar only take a shorthand for the flag name.
func CountVarP(p *int, name, shorthand string, usage string) {
CommandLine.CountVarP(p, name, shorthand, usage)
}
// Count defines a count flag with specified name, default value, and usage string.
// The return value is the address of an int variable that stores the value of the flag.
// A count flag will add 1 to its value evey time it is found on the command line
func (f *FlagSet) Count(name string, usage string) *int {
p := new(int)
f.CountVarP(p, name, "", usage)
return p
}
// CountP is like Count only takes a shorthand for the flag name.
func (f *FlagSet) CountP(name, shorthand string, usage string) *int {
p := new(int)
f.CountVarP(p, name, shorthand, usage)
return p
}
// Count defines a count flag with specified name, default value, and usage string.
// The return value is the address of an int variable that stores the value of the flag.
// A count flag will add 1 to its value evey time it is found on the command line
func Count(name string, usage string) *int {
return CommandLine.CountP(name, "", usage)
}
// CountP is like Count only takes a shorthand for the flag name.
func CountP(name, shorthand string, usage string) *int {
return CommandLine.CountP(name, shorthand, usage)
}

52
vendor/github.com/spf13/pflag/count_test.go generated vendored
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@ -1,52 +0,0 @@
package pflag
import (
"os"
"testing"
)
func setUpCount(c *int) *FlagSet {
f := NewFlagSet("test", ContinueOnError)
f.CountVarP(c, "verbose", "v", "a counter")
return f
}
func TestCount(t *testing.T) {
testCases := []struct {
input []string
success bool
expected int
}{
{[]string{"-vvv"}, true, 3},
{[]string{"-v", "-v", "-v"}, true, 3},
{[]string{"-v", "--verbose", "-v"}, true, 3},
{[]string{"-v=3", "-v"}, true, 4},
{[]string{"-v=a"}, false, 0},
}
devnull, _ := os.Open(os.DevNull)
os.Stderr = devnull
for i := range testCases {
var count int
f := setUpCount(&count)
tc := &testCases[i]
err := f.Parse(tc.input)
if err != nil && tc.success == true {
t.Errorf("expected success, got %q", err)
continue
} else if err == nil && tc.success == false {
t.Errorf("expected failure, got success")
continue
} else if tc.success {
c, err := f.GetCount("verbose")
if err != nil {
t.Errorf("Got error trying to fetch the counter flag")
}
if c != tc.expected {
t.Errorf("expected %q, got %q", tc.expected, c)
}
}
}
}

86
vendor/github.com/spf13/pflag/duration.go generated vendored
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@ -1,86 +0,0 @@
package pflag
import (
"time"
)
// -- time.Duration Value
type durationValue time.Duration
func newDurationValue(val time.Duration, p *time.Duration) *durationValue {
*p = val
return (*durationValue)(p)
}
func (d *durationValue) Set(s string) error {
v, err := time.ParseDuration(s)
*d = durationValue(v)
return err
}
func (d *durationValue) Type() string {
return "duration"
}
func (d *durationValue) String() string { return (*time.Duration)(d).String() }
func durationConv(sval string) (interface{}, error) {
return time.ParseDuration(sval)
}
// GetDuration return the duration value of a flag with the given name
func (f *FlagSet) GetDuration(name string) (time.Duration, error) {
val, err := f.getFlagType(name, "duration", durationConv)
if err != nil {
return 0, err
}
return val.(time.Duration), nil
}
// DurationVar defines a time.Duration flag with specified name, default value, and usage string.
// The argument p points to a time.Duration variable in which to store the value of the flag.
func (f *FlagSet) DurationVar(p *time.Duration, name string, value time.Duration, usage string) {
f.VarP(newDurationValue(value, p), name, "", usage)
}
// DurationVarP is like DurationVar, but accepts a shorthand letter that can be used after a single dash.
func (f *FlagSet) DurationVarP(p *time.Duration, name, shorthand string, value time.Duration, usage string) {
f.VarP(newDurationValue(value, p), name, shorthand, usage)
}
// DurationVar defines a time.Duration flag with specified name, default value, and usage string.
// The argument p points to a time.Duration variable in which to store the value of the flag.
func DurationVar(p *time.Duration, name string, value time.Duration, usage string) {
CommandLine.VarP(newDurationValue(value, p), name, "", usage)
}
// DurationVarP is like DurationVar, but accepts a shorthand letter that can be used after a single dash.
func DurationVarP(p *time.Duration, name, shorthand string, value time.Duration, usage string) {
CommandLine.VarP(newDurationValue(value, p), name, shorthand, usage)
}
// Duration defines a time.Duration flag with specified name, default value, and usage string.
// The return value is the address of a time.Duration variable that stores the value of the flag.
func (f *FlagSet) Duration(name string, value time.Duration, usage string) *time.Duration {
p := new(time.Duration)
f.DurationVarP(p, name, "", value, usage)
return p
}
// DurationP is like Duration, but accepts a shorthand letter that can be used after a single dash.
func (f *FlagSet) DurationP(name, shorthand string, value time.Duration, usage string) *time.Duration {
p := new(time.Duration)
f.DurationVarP(p, name, shorthand, value, usage)
return p
}
// Duration defines a time.Duration flag with specified name, default value, and usage string.
// The return value is the address of a time.Duration variable that stores the value of the flag.
func Duration(name string, value time.Duration, usage string) *time.Duration {
return CommandLine.DurationP(name, "", value, usage)
}
// DurationP is like Duration, but accepts a shorthand letter that can be used after a single dash.
func DurationP(name, shorthand string, value time.Duration, usage string) *time.Duration {
return CommandLine.DurationP(name, shorthand, value, usage)
}

36
vendor/github.com/spf13/pflag/example_test.go generated vendored
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@ -1,36 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package pflag_test
import (
"fmt"
"github.com/spf13/pflag"
)
func ExampleShorthandLookup() {
name := "verbose"
short := name[:1]
pflag.BoolP(name, short, false, "verbose output")
// len(short) must be == 1
flag := pflag.ShorthandLookup(short)
fmt.Println(flag.Name)
}
func ExampleFlagSet_ShorthandLookup() {
name := "verbose"
short := name[:1]
fs := pflag.NewFlagSet("Example", pflag.ContinueOnError)
fs.BoolP(name, short, false, "verbose output")
// len(short) must be == 1
flag := fs.ShorthandLookup(short)
fmt.Println(flag.Name)
}

29
vendor/github.com/spf13/pflag/export_test.go generated vendored
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@ -1,29 +0,0 @@
// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package pflag
import (
"io/ioutil"
"os"
)
// Additional routines compiled into the package only during testing.
// ResetForTesting clears all flag state and sets the usage function as directed.
// After calling ResetForTesting, parse errors in flag handling will not
// exit the program.
func ResetForTesting(usage func()) {
CommandLine = &FlagSet{
name: os.Args[0],
errorHandling: ContinueOnError,
output: ioutil.Discard,
}
Usage = usage
}
// GetCommandLine returns the default FlagSet.
func GetCommandLine() *FlagSet {
return CommandLine
}

1128
vendor/github.com/spf13/pflag/flag.go generated vendored
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1085
vendor/github.com/spf13/pflag/flag_test.go generated vendored
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88
vendor/github.com/spf13/pflag/float32.go generated vendored
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@ -1,88 +0,0 @@
package pflag
import "strconv"
// -- float32 Value
type float32Value float32
func newFloat32Value(val float32, p *float32) *float32Value {
*p = val
return (*float32Value)(p)
}
func (f *float32Value) Set(s string) error {
v, err := strconv.ParseFloat(s, 32)
*f = float32Value(v)
return err
}
func (f *float32Value) Type() string {
return "float32"
}
func (f *float32Value) String() string { return strconv.FormatFloat(float64(*f), 'g', -1, 32) }
func float32Conv(sval string) (interface{}, error) {
v, err := strconv.ParseFloat(sval, 32)
if err != nil {
return 0, err
}
return float32(v), nil
}
// GetFloat32 return the float32 value of a flag with the given name
func (f *FlagSet) GetFloat32(name string) (float32, error) {
val, err := f.getFlagType(name, "float32", float32Conv)
if err != nil {
return 0, err
}
return val.(float32), nil
}
// Float32Var defines a float32 flag with specified name, default value, and usage string.
// The argument p points to a float32 variable in which to store the value of the flag.
func (f *FlagSet) Float32Var(p *float32, name string, value float32, usage string) {
f.VarP(newFloat32Value(value, p), name, "", usage)
}
// Float32VarP is like Float32Var, but accepts a shorthand letter that can be used after a single dash.
func (f *FlagSet) Float32VarP(p *float32, name, shorthand string, value float32, usage string) {
f.VarP(newFloat32Value(value, p), name, shorthand, usage)
}
// Float32Var defines a float32 flag with specified name, default value, and usage string.
// The argument p points to a float32 variable in which to store the value of the flag.
func Float32Var(p *float32, name string, value float32, usage string) {
CommandLine.VarP(newFloat32Value(value, p), name, "", usage)
}
// Float32VarP is like Float32Var, but accepts a shorthand letter that can be used after a single dash.
func Float32VarP(p *float32, name, shorthand string, value float32, usage string) {
CommandLine.VarP(newFloat32Value(value, p), name, shorthand, usage)
}
// Float32 defines a float32 flag with specified name, default value, and usage string.
// The return value is the address of a float32 variable that stores the value of the flag.
func (f *FlagSet) Float32(name string, value float32, usage string) *float32 {
p := new(float32)
f.Float32VarP(p, name, "", value, usage)
return p
}
// Float32P is like Float32, but accepts a shorthand letter that can be used after a single dash.
func (f *FlagSet) Float32P(name, shorthand string, value float32, usage string) *float32 {
p := new(float32)
f.Float32VarP(p, name, shorthand, value, usage)
return p
}
// Float32 defines a float32 flag with specified name, default value, and usage string.
// The return value is the address of a float32 variable that stores the value of the flag.
func Float32(name string, value float32, usage string) *float32 {
return CommandLine.Float32P(name, "", value, usage)
}
// Float32P is like Float32, but accepts a shorthand letter that can be used after a single dash.
func Float32P(name, shorthand string, value float32, usage string) *float32 {
return CommandLine.Float32P(name, shorthand, value, usage)
}

84
vendor/github.com/spf13/pflag/float64.go generated vendored
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@ -1,84 +0,0 @@
package pflag
import "strconv"
// -- float64 Value
type float64Value float64
func newFloat64Value(val float64, p *float64) *float64Value {
*p = val
return (*float64Value)(p)
}
func (f *float64Value) Set(s string) error {
v, err := strconv.ParseFloat(s, 64)
*f = float64Value(v)
return err
}
func (f *float64Value) Type() string {
return "float64"
}
func (f *float64Value) String() string { return strconv.FormatFloat(float64(*f), 'g', -1, 64) }
func float64Conv(sval string) (interface{}, error) {
return strconv.ParseFloat(sval, 64)
}
// GetFloat64 return the float64 value of a flag with the given name
func (f *FlagSet) GetFloat64(name string) (float64, error) {
val, err := f.getFlagType(name, "float64", float64Conv)
if err != nil {
return 0, err
}
return val.(float64), nil
}
// Float64Var defines a float64 flag with specified name, default value, and usage string.
// The argument p points to a float64 variable in which to store the value of the flag.
func (f *FlagSet) Float64Var(p *float64, name string, value float64, usage string) {
f.VarP(newFloat64Value(value, p), name, "", usage)
}
// Float64VarP is like Float64Var, but accepts a shorthand letter that can be used after a single dash.
func (f *FlagSet) Float64VarP(p *float64, name, shorthand string, value float64, usage string) {
f.VarP(newFloat64Value(value, p), name, shorthand, usage)
}
// Float64Var defines a float64 flag with specified name, default value, and usage string.
// The argument p points to a float64 variable in which to store the value of the flag.
func Float64Var(p *float64, name string, value float64, usage string) {
CommandLine.VarP(newFloat64Value(value, p), name, "", usage)
}
// Float64VarP is like Float64Var, but accepts a shorthand letter that can be used after a single dash.
func Float64VarP(p *float64, name, shorthand string, value float64, usage string) {
CommandLine.VarP(newFloat64Value(value, p), name, shorthand, usage)
}
// Float64 defines a float64 flag with specified name, default value, and usage string.
// The return value is the address of a float64 variable that stores the value of the flag.
func (f *FlagSet) Float64(name string, value float64, usage string) *float64 {
p := new(float64)
f.Float64VarP(p, name, "", value, usage)
return p
}
// Float64P is like Float64, but accepts a shorthand letter that can be used after a single dash.
func (f *FlagSet) Float64P(name, shorthand string, value float64, usage string) *float64 {
p := new(float64)
f.Float64VarP(p, name, shorthand, value, usage)
return p
}
// Float64 defines a float64 flag with specified name, default value, and usage string.
// The return value is the address of a float64 variable that stores the value of the flag.
func Float64(name string, value float64, usage string) *float64 {
return CommandLine.Float64P(name, "", value, usage)
}
// Float64P is like Float64, but accepts a shorthand letter that can be used after a single dash.
func Float64P(name, shorthand string, value float64, usage string) *float64 {
return CommandLine.Float64P(name, shorthand, value, usage)
}

101
vendor/github.com/spf13/pflag/golangflag.go generated vendored
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@ -1,101 +0,0 @@
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package pflag
import (
goflag "flag"
"reflect"
"strings"
)
// flagValueWrapper implements pflag.Value around a flag.Value. The main
// difference here is the addition of the Type method that returns a string
// name of the type. As this is generally unknown, we approximate that with
// reflection.
type flagValueWrapper struct {
inner goflag.Value
flagType string
}
// We are just copying the boolFlag interface out of goflag as that is what
// they use to decide if a flag should get "true" when no arg is given.
type goBoolFlag interface {
goflag.Value
IsBoolFlag() bool
}
func wrapFlagValue(v goflag.Value) Value {
// If the flag.Value happens to also be a pflag.Value, just use it directly.
if pv, ok := v.(Value); ok {
return pv
}
pv := &flagValueWrapper{
inner: v,
}
t := reflect.TypeOf(v)
if t.Kind() == reflect.Interface || t.Kind() == reflect.Ptr {
t = t.Elem()
}
pv.flagType = strings.TrimSuffix(t.Name(), "Value")
return pv
}
func (v *flagValueWrapper) String() string {
return v.inner.String()
}
func (v *flagValueWrapper) Set(s string) error {
return v.inner.Set(s)
}
func (v *flagValueWrapper) Type() string {
return v.flagType
}
// PFlagFromGoFlag will return a *pflag.Flag given a *flag.Flag
// If the *flag.Flag.Name was a single character (ex: `v`) it will be accessiblei
// with both `-v` and `--v` in flags. If the golang flag was more than a single
// character (ex: `verbose`) it will only be accessible via `--verbose`
func PFlagFromGoFlag(goflag *goflag.Flag) *Flag {
// Remember the default value as a string; it won't change.
flag := &Flag{
Name: goflag.Name,
Usage: goflag.Usage,
Value: wrapFlagValue(goflag.Value),
// Looks like golang flags don't set DefValue correctly :-(
//DefValue: goflag.DefValue,
DefValue: goflag.Value.String(),
}
// Ex: if the golang flag was -v, allow both -v and --v to work
if len(flag.Name) == 1 {
flag.Shorthand = flag.Name
}
if fv, ok := goflag.Value.(goBoolFlag); ok && fv.IsBoolFlag() {
flag.NoOptDefVal = "true"
}
return flag
}
// AddGoFlag will add the given *flag.Flag to the pflag.FlagSet
func (f *FlagSet) AddGoFlag(goflag *goflag.Flag) {
if f.Lookup(goflag.Name) != nil {
return
}
newflag := PFlagFromGoFlag(goflag)
f.AddFlag(newflag)
}
// AddGoFlagSet will add the given *flag.FlagSet to the pflag.FlagSet
func (f *FlagSet) AddGoFlagSet(newSet *goflag.FlagSet) {
if newSet == nil {
return
}
newSet.VisitAll(func(goflag *goflag.Flag) {
f.AddGoFlag(goflag)
})
}

39
vendor/github.com/spf13/pflag/golangflag_test.go generated vendored
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@ -1,39 +0,0 @@
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package pflag
import (
goflag "flag"
"testing"
)
func TestGoflags(t *testing.T) {
goflag.String("stringFlag", "stringFlag", "stringFlag")
goflag.Bool("boolFlag", false, "boolFlag")
f := NewFlagSet("test", ContinueOnError)
f.AddGoFlagSet(goflag.CommandLine)
err := f.Parse([]string{"--stringFlag=bob", "--boolFlag"})
if err != nil {
t.Fatal("expected no error; get", err)
}
getString, err := f.GetString("stringFlag")
if err != nil {
t.Fatal("expected no error; get", err)
}
if getString != "bob" {
t.Fatalf("expected getString=bob but got getString=%s", getString)
}
getBool, err := f.GetBool("boolFlag")
if err != nil {
t.Fatal("expected no error; get", err)
}
if getBool != true {
t.Fatalf("expected getBool=true but got getBool=%v", getBool)
}
}

84
vendor/github.com/spf13/pflag/int.go generated vendored
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@ -1,84 +0,0 @@
package pflag
import "strconv"
// -- int Value
type intValue int
func newIntValue(val int, p *int) *intValue {
*p = val
return (*intValue)(p)
}
func (i *intValue) Set(s string) error {
v, err := strconv.ParseInt(s, 0, 64)
*i = intValue(v)
return err
}
func (i *intValue) Type() string {
return "int"
}
func (i *intValue) String() string { return strconv.Itoa(int(*i)) }
func intConv(sval string) (interface{}, error) {
return strconv.Atoi(sval)
}
// GetInt return the int value of a flag with the given name
func (f *FlagSet) GetInt(name string) (int, error) {
val, err := f.getFlagType(name, "int", intConv)
if err != nil {
return 0, err
}
return val.(int), nil
}
// IntVar defines an int flag with specified name, default value, and usage string.
// The argument p points to an int variable in which to store the value of the flag.
func (f *FlagSet) IntVar(p *int, name string, value int, usage string) {
f.VarP(newIntValue(value, p), name, "", usage)
}
// IntVarP is like IntVar, but accepts a shorthand letter that can be used after a single dash.
func (f *FlagSet) IntVarP(p *int, name, shorthand string, value int, usage string) {
f.VarP(newIntValue(value, p), name, shorthand, usage)
}
// IntVar defines an int flag with specified name, default value, and usage string.
// The argument p points to an int variable in which to store the value of the flag.
func IntVar(p *int, name string, value int, usage string) {
CommandLine.VarP(newIntValue(value, p), name, "", usage)
}
// IntVarP is like IntVar, but accepts a shorthand letter that can be used after a single dash.
func IntVarP(p *int, name, shorthand string, value int, usage string) {
CommandLine.VarP(newIntValue(value, p), name, shorthand, usage)
}
// Int defines an int flag with specified name, default value, and usage string.
// The return value is the address of an int variable that stores the value of the flag.
func (f *FlagSet) Int(name string, value int, usage string) *int {
p := new(int)
f.IntVarP(p, name, "", value, usage)
return p
}
// IntP is like Int, but accepts a shorthand letter that can be used after a single dash.
func (f *FlagSet) IntP(name, shorthand string, value int, usage string) *int {
p := new(int)
f.IntVarP(p, name, shorthand, value, usage)
return p
}
// Int defines an int flag with specified name, default value, and usage string.
// The return value is the address of an int variable that stores the value of the flag.
func Int(name string, value int, usage string) *int {
return CommandLine.IntP(name, "", value, usage)
}
// IntP is like Int, but accepts a shorthand letter that can be used after a single dash.
func IntP(name, shorthand string, value int, usage string) *int {
return CommandLine.IntP(name, shorthand, value, usage)
}

88
vendor/github.com/spf13/pflag/int32.go generated vendored
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@ -1,88 +0,0 @@
package pflag
import "strconv"
// -- int32 Value
type int32Value int32
func newInt32Value(val int32, p *int32) *int32Value {
*p = val
return (*int32Value)(p)
}
func (i *int32Value) Set(s string) error {
v, err := strconv.ParseInt(s, 0, 32)
*i = int32Value(v)
return err
}
func (i *int32Value) Type() string {
return "int32"
}
func (i *int32Value) String() string { return strconv.FormatInt(int64(*i), 10) }
func int32Conv(sval string) (interface{}, error) {
v, err := strconv.ParseInt(sval, 0, 32)
if err != nil {
return 0, err
}
return int32(v), nil
}
// GetInt32 return the int32 value of a flag with the given name
func (f *FlagSet) GetInt32(name string) (int32, error) {
val, err := f.getFlagType(name, "int32", int32Conv)
if err != nil {
return 0, err
}
return val.(int32), nil
}
// Int32Var defines an int32 flag with specified name, default value, and usage string.
// The argument p points to an int32 variable in which to store the value of the flag.
func (f *FlagSet) Int32Var(p *int32, name string, value int32, usage string) {
f.VarP(newInt32Value(value, p), name, "", usage)
}
// Int32VarP is like Int32Var, but accepts a shorthand letter that can be used after a single dash.
func (f *FlagSet) Int32VarP(p *int32, name, shorthand string, value int32, usage string) {
f.VarP(newInt32Value(value, p), name, shorthand, usage)
}
// Int32Var defines an int32 flag with specified name, default value, and usage string.
// The argument p points to an int32 variable in which to store the value of the flag.
func Int32Var(p *int32, name string, value int32, usage string) {
CommandLine.VarP(newInt32Value(value, p), name, "", usage)
}
// Int32VarP is like Int32Var, but accepts a shorthand letter that can be used after a single dash.
func Int32VarP(p *int32, name, shorthand string, value int32, usage string) {
CommandLine.VarP(newInt32Value(value, p), name, shorthand, usage)
}
// Int32 defines an int32 flag with specified name, default value, and usage string.
// The return value is the address of an int32 variable that stores the value of the flag.
func (f *FlagSet) Int32(name string, value int32, usage string) *int32 {
p := new(int32)
f.Int32VarP(p, name, "", value, usage)
return p
}
// Int32P is like Int32, but accepts a shorthand letter that can be used after a single dash.
func (f *FlagSet) Int32P(name, shorthand string, value int32, usage string) *int32 {
p := new(int32)
f.Int32VarP(p, name, shorthand, value, usage)
return p
}
// Int32 defines an int32 flag with specified name, default value, and usage string.
// The return value is the address of an int32 variable that stores the value of the flag.
func Int32(name string, value int32, usage string) *int32 {
return CommandLine.Int32P(name, "", value, usage)
}
// Int32P is like Int32, but accepts a shorthand letter that can be used after a single dash.
func Int32P(name, shorthand string, value int32, usage string) *int32 {
return CommandLine.Int32P(name, shorthand, value, usage)
}

84
vendor/github.com/spf13/pflag/int64.go generated vendored
View file

@ -1,84 +0,0 @@
package pflag
import "strconv"
// -- int64 Value
type int64Value int64
func newInt64Value(val int64, p *int64) *int64Value {
*p = val
return (*int64Value)(p)
}
func (i *int64Value) Set(s string) error {
v, err := strconv.ParseInt(s, 0, 64)
*i = int64Value(v)
return err
}
func (i *int64Value) Type() string {
return "int64"
}
func (i *int64Value) String() string { return strconv.FormatInt(int64(*i), 10) }
func int64Conv(sval string) (interface{}, error) {
return strconv.ParseInt(sval, 0, 64)
}
// GetInt64 return the int64 value of a flag with the given name
func (f *FlagSet) GetInt64(name string) (int64, error) {
val, err := f.getFlagType(name, "int64", int64Conv)
if err != nil {
return 0, err
}
return val.(int64), nil
}
// Int64Var defines an int64 flag with specified name, default value, and usage string.
// The argument p points to an int64 variable in which to store the value of the flag.
func (f *FlagSet) Int64Var(p *int64, name string, value int64, usage string) {
f.VarP(newInt64Value(value, p), name, "", usage)
}
// Int64VarP is like Int64Var, but accepts a shorthand letter that can be used after a single dash.
func (f *FlagSet) Int64VarP(p *int64, name, shorthand string, value int64, usage string) {
f.VarP(newInt64Value(value, p), name, shorthand, usage)
}
// Int64Var defines an int64 flag with specified name, default value, and usage string.
// The argument p points to an int64 variable in which to store the value of the flag.
func Int64Var(p *int64, name string, value int64, usage string) {
CommandLine.VarP(newInt64Value(value, p), name, "", usage)
}
// Int64VarP is like Int64Var, but accepts a shorthand letter that can be used after a single dash.
func Int64VarP(p *int64, name, shorthand string, value int64, usage string) {
CommandLine.VarP(newInt64Value(value, p), name, shorthand, usage)
}
// Int64 defines an int64 flag with specified name, default value, and usage string.
// The return value is the address of an int64 variable that stores the value of the flag.
func (f *FlagSet) Int64(name string, value int64, usage string) *int64 {
p := new(int64)
f.Int64VarP(p, name, "", value, usage)
return p
}
// Int64P is like Int64, but accepts a shorthand letter that can be used after a single dash.
func (f *FlagSet) Int64P(name, shorthand string, value int64, usage string) *int64 {
p := new(int64)
f.Int64VarP(p, name, shorthand, value, usage)
return p
}
// Int64 defines an int64 flag with specified name, default value, and usage string.
// The return value is the address of an int64 variable that stores the value of the flag.
func Int64(name string, value int64, usage string) *int64 {
return CommandLine.Int64P(name, "", value, usage)
}
// Int64P is like Int64, but accepts a shorthand letter that can be used after a single dash.
func Int64P(name, shorthand string, value int64, usage string) *int64 {
return CommandLine.Int64P(name, shorthand, value, usage)
}

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