Golang: command-line arguments parser

[hhstore]

related:

• xxx
• xxx

[hhstore]

Go 命令行参数解析:

需求:

• main.go 需要通过命令行传参, 调用执行不同分支.
• 具体传参方式:
  • 命令行: 传参
  • env: 环境变量传参
  • config file: 配置文件传参

包推荐:

• https://github.com/urfave/cli
  • ⭐⭐⭐⭐⭐
  • 应该是最强, 如上各种传参方式, 都支持.
  • 跨平台: osx/Linux/Windows
  • go-micro 选择此包.
• https://github.com/spf13/cobra
  • ⭐⭐⭐
  • 虽然广泛使用, 但是不喜欢. 对项目有侵入性.
• https://github.com/docopt/docopt.go
• https://github.com/alexflint/go-arg

urfave/cli:

docs:

别名: https://github.com/urfave/cli/blob/master/docs/v2/manual.md#alternate-names
参数排序: https://github.com/urfave/cli/blob/master/docs/v2/manual.md#ordering
环境变量取参: https://github.com/urfave/cli/blob/master/docs/v2/manual.md#values-from-the-environment
配置文件取参: https://github.com/urfave/cli/blob/master/docs/v2/manual.md#values-from-files

使用方式:

• install:

GO111MODULE=on go get -u -v github.com/urfave/cli/v2

• usage:

import (
  "github.com/urfave/cli/v2" // imports as package "cli"
)

[hhstore]

1

[hhstore]

1

[hhstore]

1

[hhstore]

1

[hhstore]

xxxxxx:

xxxxxxxxxxxxxx	xxxxxxxxxxxxxx	xxxx
xxxxxxxxxxxxxx	xxxxxxxxxxxxxxxxxx	xxxxxxxxxx
xxxxxxxxxxxxxx	xxxxxxxxxxxxxxxxxx	xxxxxxxxxx
xxxxxxxxxxxxxx	xxxxxxxxxxxxxxxxxx	xxxxxxxxxx
xxxxxxxxxxxxxx	xxxxxxxxxxxxxxxxxx	xxxxxxxxxx
xxxxxxxxxxxxxx	xxxxxxxxxxxxxxxxxx	xxxxxxxxxx
xxxxxxxxxxxxxx	xxxxxxxxxxxxxxxxxx	xxxxxxxxxx
xxxxxxxxxxxxxx	xxxxxxxxxxxxxxxxxx	xxxxxxxxxx