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Copy pathgcmd.go
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114 lines (100 loc) · 2.56 KB
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// Copyright 2019 gf Author(https://github.com/gogf/gf). All Rights Reserved.
//
// This Source Code Form is subject to the terms of the MIT License.
// If a copy of the MIT was not distributed with this file,
// You can obtain one at https://github.com/gogf/gf.
//
// Package gcmd provides console operations, like options/arguments reading and command running.
package gcmd
import (
"os"
"github.com/gogf/gf/container/gvar"
"github.com/gogf/gf/text/gregex"
)
var (
defaultParsedArgs = make([]string, 0)
defaultParsedOptions = make(map[string]string)
defaultCommandFuncMap = make(map[string]func())
)
// Custom initialization.
func doInit() {
if len(defaultParsedArgs) > 0 {
return
}
// Parsing os.Args with default algorithm.
// The option should use '=' to separate its name and value in default.
for _, arg := range os.Args {
array, _ := gregex.MatchString(`^\-{1,2}([\w\?\.\-]+)={0,1}(.*)$`, arg)
if len(array) == 3 {
defaultParsedOptions[array[1]] = array[2]
} else {
defaultParsedArgs = append(defaultParsedArgs, arg)
}
}
}
// GetOpt returns the option value named <name>.
func GetOpt(name string, def ...string) string {
doInit()
if v, ok := defaultParsedOptions[name]; ok {
return v
}
if len(def) > 0 {
return def[0]
}
return ""
}
// GetOptVar returns the option value named <name> as *gvar.Var.
func GetOptVar(name string, def ...string) *gvar.Var {
doInit()
return gvar.New(GetOpt(name, def...))
}
// GetOptAll returns all parsed options.
func GetOptAll() map[string]string {
doInit()
return defaultParsedOptions
}
// ContainsOpt checks whether option named <name> exist in the arguments.
func ContainsOpt(name string, def ...string) bool {
doInit()
_, ok := defaultParsedOptions[name]
return ok
}
// GetArg returns the argument at <index>.
func GetArg(index int, def ...string) string {
doInit()
if index < len(defaultParsedArgs) {
return defaultParsedArgs[index]
}
if len(def) > 0 {
return def[0]
}
return ""
}
// GetArgVar returns the argument at <index> as *gvar.Var.
func GetArgVar(index int, def ...string) *gvar.Var {
doInit()
return gvar.New(GetArg(index, def...))
}
// GetArgAll returns all parsed arguments.
func GetArgAll() []string {
doInit()
return defaultParsedArgs
}
// BuildOptions builds the options as string.
func BuildOptions(m map[string]string, prefix ...string) string {
options := ""
leadStr := "-"
if len(prefix) > 0 {
leadStr = prefix[0]
}
for k, v := range m {
if len(options) > 0 {
options += " "
}
options += leadStr + k
if v != "" {
options += "=" + v
}
}
return options
}