mirror of
https://gitee.com/johng/gf.git
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111 lines
2.9 KiB
Go
111 lines
2.9 KiB
Go
// Copyright 2017 gf Author(https://gitee.com/johng/gf). All Rights Reserved.
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//
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// This Source Code Form is subject to the terms of the MIT License.
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// If a copy of the MIT was not distributed with this file,
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// You can obtain one at https://gitee.com/johng/gf.
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//
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// 命令行管理.
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package gcmd
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import (
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"os"
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"errors"
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"regexp"
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)
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// 命令行参数列表
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type gCmdValue struct {
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values []string
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}
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// 命令行选项列表
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type gCmdOption struct {
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options map[string]string
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}
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// 终端管理对象(全局)
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var Value = &gCmdValue{} // 终端参数-命令参数列表
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var Option = &gCmdOption{} // 终端参数-选项参数列表
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var cmdFuncMap = make(map[string]func()) // 终端命令及函数地址对应表
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// 检查并初始化console参数，在包加载的时候触发
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// 初始化时执行，不影响运行时性能
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func init() {
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reg := regexp.MustCompile(`\-\-{0,1}(.+?)=(.+)`)
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Option.options = make(map[string]string)
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for i := 0; i < len(os.Args); i++ {
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result := reg.FindStringSubmatch(os.Args[i])
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if len(result) > 1 {
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Option.options[result[1]] = result[2]
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} else {
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Value.values = append(Value.values, os.Args[i])
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}
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}
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}
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// 返回所有的命令行参数values
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func (c *gCmdValue) GetAll() []string {
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return c.values
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}
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// 返回所有的命令行参数options
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func (c *gCmdOption) GetAll() map[string]string {
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return c.options
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}
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// 获得一条指定索引位置的value参数
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func (c *gCmdValue) Get(index uint8, def...string) string {
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if index < uint8(len(c.values)) {
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return c.values[index]
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} else if len(def) > 0 {
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return def[0]
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}
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return ""
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}
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// 获得一条指定索引位置的option参数;
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func (c *gCmdOption) Get(key string, def...string) string {
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if option, ok := c.options[key]; ok {
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return option
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} else if len(def) > 0 {
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return def[0]
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}
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return ""
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}
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// 绑定命令行参数及对应的命令函数，注意命令函数参数是函数的内存地址
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// 如果操作失败返回错误信息
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func BindHandle (cmd string, f func()) error {
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if _, ok := cmdFuncMap[cmd]; ok {
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return errors.New("duplicated handle for command:" + cmd)
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} else {
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cmdFuncMap[cmd] = f
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return nil
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}
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}
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// 执行命令对应的函数
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func RunHandle (cmd string) error {
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if handle, ok := cmdFuncMap[cmd]; ok {
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handle()
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return nil
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} else {
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return errors.New("no handle found for command:" + cmd)
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}
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}
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// 自动识别命令参数并执行命令参数对应的函数
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func AutoRun () error {
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if cmd := Value.Get(1); cmd != "" {
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if handle, ok := cmdFuncMap[cmd]; ok {
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handle()
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return nil
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} else {
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return errors.New("no handle found for command:" + cmd)
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}
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} else {
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return errors.New("no command found")
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}
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}
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