gcmd

5 分钟阅读

原文：https://pkg.go.dev/github.com/gogf/gf/v2@v2.6.4/os/gcmd

Package gcmd provides console operations, like options/arguments reading and command running.

软件包 gcmd 提供控制台操作，例如选项/参数读取和命令运行。

常量

1
2
3
4
5
const (
	CtxKeyParser    gctx.StrKey = `CtxKeyParser`
	CtxKeyCommand   gctx.StrKey = `CtxKeyCommand`
	CtxKeyArguments gctx.StrKey = `CtxKeyArguments`
)

变量

This section is empty.

函数

func BuildOptions

1
func BuildOptions(m map[string]string, prefix ...string) string

BuildOptions builds the options as string.

BuildOptions 将选项构建为字符串。

func GetArg

1
func GetArg(index int, def ...string) *gvar.Var

GetArg returns the argument at index as gvar.Var.

GetArg skilar röksemdafærslunni eins index og var.意识到的。

Example

func GetArgAll

1
func GetArgAll() []string

GetArgAll returns all parsed arguments.

GetArgAll 返回所有已分析的参数。

Example

func GetOpt

1
func GetOpt(name string, def ...string) *gvar.Var

GetOpt returns the option value named name as gvar.Var.

GetOpt 返回名为 name gvar 的选项值。是。

Example

func GetOptAll

1
func GetOptAll() map[string]string

GetOptAll returns all parsed options.

GetOptAll 返回所有已分析的选项。

Example

func GetOptWithEnv

1
func GetOptWithEnv(key string, def ...interface{}) *gvar.Var

GetOptWithEnv returns the command line argument of the specified key. If the argument does not exist, then it returns the environment variable with specified key. It returns the default value def if none of them exists.

GetOptWithEnv 返回指定 key .如果参数不存在，则返回具有指定 key .如果它们都不存在，则返回默认值 def 。

Fetching Rules: 1. Command line arguments are in lowercase format, eg: gf.package name.; 2. Environment arguments are in uppercase format, eg: GF_package name_；

获取规则： 1.命令行参数为小写格式，例如：gf。 package name .;2. 环境参数为大写格式，例如：GF_ package name _;

Example

func Init

1
func Init(args ...string)

Init does custom initialization.

Init 执行自定义初始化。

Example

func Scan

1
func Scan(info ...interface{}) string

Scan prints info to stdout, reads and returns user input, which stops by ‘\n’.

扫描打印 info 到 stdout，读取并返回用户输入，该输入以“\n”停止。

Example

func Scanf

1
func Scanf(format string, info ...interface{}) string

Scanf prints info to stdout with format, reads and returns user input, which stops by ‘\n’.

Scanf 打印 info 到 stdout with format ，读取并返回用户输入，该输入以 ‘\n’ 停止。

Example

类型

type Argument

1
2
3
4
5
6
7
type Argument struct {
	Name   string // Option name.
	Short  string // Option short.
	Brief  string // Brief info about this Option, which is used in help info.
	IsArg  bool   // IsArg marks this argument taking value from command line argument instead of option.
	Orphan bool   // Whether this Option having or having no value bound to it.
}

Argument is the command value that are used by certain command.

参数是某个命令使用的命令值。

type Command

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
type Command struct {
	Name          string        // Command name(case-sensitive).
	Usage         string        // A brief line description about its usage, eg: gf build main.go [OPTION]
	Brief         string        // A brief info that describes what this command will do.
	Description   string        // A detailed description.
	Arguments     []Argument    // Argument array, configuring how this command act.
	Func          Function      // Custom function.
	FuncWithValue FuncWithValue // Custom function with output parameters that can interact with command caller.
	HelpFunc      Function      // Custom help function
	Examples      string        // Usage examples.
	Additional    string        // Additional info about this command, which will be appended to the end of help info.
	Strict        bool          // Strict parsing options, which means it returns error if invalid option given.
	CaseSensitive bool          // CaseSensitive parsing options, which means it parses input options in case-sensitive way.
	Config        string        // Config node name, which also retrieves the values from config component along with command line.
	// contains filtered or unexported fields
}

Command holds the info about an argument that can handle custom logic.

Command 保存有关可处理自定义逻辑的参数的信息。

func CommandFromCtx

1
func CommandFromCtx(ctx context.Context) *Command

CommandFromCtx retrieves and returns Command from context.

CommandFromCtx 从上下文中检索并返回 Command。

Example

func NewFromObject

1
func NewFromObject(object interface{}) (rootCmd *Command, err error)

NewFromObject creates and returns a root command object using given object.

NewFromObject 使用给定对象创建并返回根命令对象。

(*Command) AddCommand

1
func (c *Command) AddCommand(commands ...*Command) error

AddCommand adds one or more sub-commands to current command.

AddCommand 将一个或多个子命令添加到当前命令。

Example

(*Command) AddObject

1
func (c *Command) AddObject(objects ...interface{}) error

AddObject adds one or more sub-commands to current command using struct object.

AddObject 使用 struct object 将一个或多个子命令添加到当前命令。

Example

(*Command) Print

1
func (c *Command) Print()

Print prints help info to stdout for current command.

打印打印当前命令的帮助信息到 stdout。

Example

(*Command) PrintTo

1
func (c *Command) PrintTo(writer io.Writer)

PrintTo prints help info to custom io.Writer.

PrintTo 将帮助信息打印到自定义 io。作家。

(*Command) Run

1
func (c *Command) Run(ctx context.Context)

Run calls custom function in os.Args that bound to this command. It exits this process with exit code 1 if any error occurs.

在操作系统中运行调用自定义函数。绑定到此命令的参数。如果发生任何错误，它将退出此进程，并显示退出代码 1。

(*Command) RunWithError

1
func (c *Command) RunWithError(ctx context.Context) (err error)

RunWithError calls custom function in os.Args that bound to this command with error output.

RunWithError 在 os 中调用自定义函数。绑定到此命令的参数，输出错误。

(*Command) RunWithSpecificArgs

1
func (c *Command) RunWithSpecificArgs(ctx context.Context, args []string) (value interface{}, err error)

RunWithSpecificArgs calls custom function in specific args that bound to this command with value and error output.

RunWithSpecificArgs 在绑定到此命令的特定参数中调用自定义函数，并提供值和错误输出。

(*Command) RunWithValue

1
func (c *Command) RunWithValue(ctx context.Context) (value interface{})

RunWithValue calls custom function in os.Args that bound to this command with value output. It exits this process with exit code 1 if any error occurs.

RunWithValue 在 os 中调用自定义函数。绑定到此命令的参数，并带有值输出。如果发生任何错误，它将退出此进程，并显示退出代码 1。

(*Command) RunWithValueError

1
func (c *Command) RunWithValueError(ctx context.Context) (value interface{}, err error)

RunWithValueError calls custom function in os.Args that bound to this command with value and error output.

RunWithValueError 在 os 中调用自定义函数。绑定到此命令的参数，并输出值和错误。

type FuncWithValue

1
type FuncWithValue func(ctx context.Context, parser *Parser) (out interface{}, err error)

FuncWithValue is similar like Func but with output parameters that can interact with command caller.

FuncWithValue 类似于 Func，但具有可以与命令调用者交互的输出参数。

type Function

1
type Function func(ctx context.Context, parser *Parser) (err error)

Function is a custom command callback function that is bound to a certain argument.

函数是绑定到某个参数的自定义命令回调函数。

type Parser

1
2
3
type Parser struct {
	// contains filtered or unexported fields
}

Parser for arguments.

参数的解析器。

func Parse

1
func Parse(supportedOptions map[string]bool, option ...ParserOption) (*Parser, error)

Parse creates and returns a new Parser with os.Args and supported options.

Parse 创建并返回一个带有 os 的新解析器。参数和支持的选项。

Note that the parameter supportedOptions is as [option name: need argument], which means the value item of supportedOptions indicates whether corresponding option name needs argument or not.

需要注意的是，参数 supportedOptions 为[option name： need argument]，表示值 supportedOptions 项表示对应的选项名称是否需要参数。

The optional parameter strict specifies whether stops parsing and returns error if invalid option passed.

可选参数 strict 指定是否停止解析，如果传递了无效选项，则返回错误。

Example

func ParseArgs

1
func ParseArgs(args []string, supportedOptions map[string]bool, option ...ParserOption) (*Parser, error)

ParseArgs creates and returns a new Parser with given arguments and supported options.

ParseArgs 创建并返回一个具有给定参数和支持选项的新解析器。

Note that the parameter supportedOptions is as [option name: need argument], which means the value item of supportedOptions indicates whether corresponding option name needs argument or not.

需要注意的是，参数 supportedOptions 为[option name： need argument]，表示值 supportedOptions 项表示对应的选项名称是否需要参数。

The optional parameter strict specifies whether stops parsing and returns error if invalid option passed.

可选参数 strict 指定是否停止解析，如果传递了无效选项，则返回错误。

Example

func ParserFromCtx

1
func ParserFromCtx(ctx context.Context) *Parser

ParserFromCtx retrieves and returns Parser from context.

ParserFromCtx 从上下文中检索并返回 Parser。

Example

(*Parser) GetArg

1
func (p *Parser) GetArg(index int, def ...string) *gvar.Var

GetArg returns the argument at index as gvar.Var.

GetArg skilar röksemdafærslunni eins index og var.意识到的。

Example

(*Parser) GetArgAll

1
func (p *Parser) GetArgAll() []string

GetArgAll returns all parsed arguments.

GetArgAll 返回所有已分析的参数。

(*Parser) GetOpt

1
func (p *Parser) GetOpt(name string, def ...interface{}) *gvar.Var

GetOpt returns the option value named name as gvar.Var.

GetOpt 返回名为 name gvar 的选项值。是。

(*Parser) GetOptAll

1
func (p *Parser) GetOptAll() map[string]string

GetOptAll returns all parsed options.

GetOptAll 返回所有已分析的选项。

(Parser) MarshalJSON

1
func (p Parser) MarshalJSON() ([]byte, error)

MarshalJSON implements the interface MarshalJSON for json.Marshal.

MarshalJSON 实现 json 的接口 MarshalJSON。元帅。

type ParserOption <-2.1.0

1
2
3
4
type ParserOption struct {
	CaseSensitive bool // Marks options parsing in case-sensitive way.
	Strict        bool // Whether stops parsing and returns error if invalid option passed.
}

ParserOption manages the parsing options.

ParserOption 管理解析选项。

最后修改 October 10, 2024: 更新 (a4b8f85)