{"id":2894,"date":"2019-02-27T20:10:11","date_gmt":"2019-02-27T12:10:11","guid":{"rendered":"https:\/\/damogame.cn:15443\/wordpress\/?p=2894"},"modified":"2019-02-27T20:10:11","modified_gmt":"2019-02-27T12:10:11","slug":"go%e8%af%ad%e8%a8%80%e5%91%bd%e4%bb%a4%e8%a1%8c%e5%ba%93urfave-cli%e7%ae%80%e4%bb%8b","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/2894","title":{"rendered":"Go\u8bed\u8a00\u547d\u4ee4\u884c\u5e93urfave\/cli\u7b80\u4ecb"},"content":{"rendered":"
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\u00a0\u7248\u6743\u58f0\u660e\uff1a\u672c\u6587\u4e3a\u535a\u4e3b\u539f\u521b\u6587\u7ae0\uff0c\u672a\u7ecf\u535a\u4e3b\u5141\u8bb8\u4e0d\u5f97\u8f6c\u8f7d\u3002 https:\/\/blog.csdn.net\/TurkeyCock\/article\/details\/80359654<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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\u5f88\u591a\u7528Go\u5199\u7684\u547d\u4ee4\u884c\u7a0b\u5e8f\u90fd\u7528\u4e86urfave\/cli\u8fd9\u4e2a\u5e93\uff0c\u5305\u62ecgeth\uff0c\u6709\u5fc5\u8981\u7b80\u5355\u4e86\u89e3\u4e00\u4e0b\u3002<\/p>\n

\u7528C\u5199\u8fc7\u547d\u4ee4\u884c\u7a0b\u5e8f\u7684\u4eba\u5e94\u8be5\u90fd\u4e0d\u964c\u751f\uff0c\u6211\u4eec\u9700\u8981\u6839\u636eargc\/argv\u4e00\u4e2a\u4e2a\u5730\u89e3\u6790\u547d\u4ee4\u884c\u53c2\u6570\uff0c\u8c03\u7528\u4e0d\u540c\u7684\u51fd\u6570\uff0c\u6700\u540e\u8fd8\u8981\u5199\u4e00\u4e2ausage()\u51fd\u6570\u7528\u4e8e\u6253\u5370\u5e2e\u52a9\u4fe1\u606f\u3002urfave\/cli\u628a\u8fd9\u4e2a\u8fc7\u7a0b\u505a\u4e86\u4e00\u4e0b\u5c01\u88c5\uff0c\u62bd\u8c61\u51faflag\/command\/subcommand\u8fd9\u4e9b\u6a21\u5757\uff0c\u7528\u6237\u53ea\u9700\u8981\u63d0\u4f9b\u4e00\u4e9b\u6a21\u5757\u7684\u914d\u7f6e\uff0c\u53c2\u6570\u7684\u89e3\u6790\u548c\u5173\u8054\u5728\u5e93\u5185\u90e8\u5b8c\u6210\uff0c\u5e2e\u52a9\u4fe1\u606f\u4e5f\u53ef\u4ee5\u81ea\u52a8\u751f\u6210\u3002<\/p>\n

\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u6211\u4eec\u60f3\u8981\u5b9e\u73b0\u4e0b\u9762\u8fd9\u4e2a\u547d\u4ee4\u884c\u7a0b\u5e8f\uff1a<\/p>\n

NAME:\r\n   GoTest - hello world\r\n\r\nUSAGE:\r\n   GoTest [global options] command [command options] [arguments...]\r\n\r\nVERSION:\r\n   1.2.3\r\n\r\nCOMMANDS:\r\n     help, h  Shows a list of commands or help for one command\r\n   arithmetic:\r\n     add, a  calc 1+1\r\n     sub, s  calc 5-3\r\n   database:\r\n     db  database operations\r\n\r\nGLOBAL OPTIONS:\r\n   --lang FILE, -l FILE    read from FILE (default: \"english\")\r\n   --port value, -p value  listening port (default: 8000)\r\n   --help, -h              Help!Help!\r\n   --print-version, -v     print version<\/pre>\n
 <\/p>\n
<\/a>1. \u57fa\u672c\u7ed3\u6784<\/h2>\n
\u5bfc\u5165\u5305\u4ee5\u540e\uff0c\u901a\u8fc7cli.NewApp()\u521b\u5efa\u4e00\u4e2a\u5b9e\u4f8b\uff0c\u7136\u540e\u8c03\u7528Run()\u65b9\u6cd5\u5c31\u5b9e\u73b0\u4e86\u4e00\u4e2a\u6700\u57fa\u672c\u7684\u547d\u4ee4\u884c\u7a0b\u5e8f\u4e86\u3002<\/p>\n
\u5f53\u7136\uff0c\u4e3a\u4e86\u8ba9\u6211\u4eec\u7684\u7a0b\u5e8f\u5e72\u70b9\u4e8b\u60c5\uff0c\u53ef\u4ee5\u6307\u5b9a\u4e00\u4e0b\u5165\u53e3\u51fd\u6570app.Action\uff0c\u5177\u4f53\u5199\u6cd5\u5982\u4e0b\uff1a<\/p>\n
 import (\r\n        \"fmt\"\r\n    \"gopkg.in\/urfave\/cli.v1\"\r\n)\r\n\r\nfunc main() {\r\n    app := cli.NewApp()\r\n    app.Action = func(c *cli.Context) error {\r\n        fmt.Println(\"BOOM!\")\r\n        return nil\r\n    }\r\n\r\n    err := app.Run(os.Args)\r\n    if err != nil {\r\n        log.Fatal(err)\r\n    }\r\n}<\/pre>\n
 <\/p>\n
<\/a>2. \u516c\u5171\u914d\u7f6e<\/h2>\n
\u5c31\u662f\u5e2e\u52a9\u91cc\u9700\u8981\u663e\u793a\u7684\u4e00\u4e9b\u57fa\u672c\u4fe1\u606f\uff1a<\/p>\n
app.Name = \"GoTest\"\r\napp.Usage = \"hello world\"\r\napp.Version = \"1.2.3\"<\/pre>\n
 <\/p>\n
<\/a>3. Flag\u914d\u7f6e<\/h2>\n
\u5177\u4f53\u5bf9\u5e94\u4e8e\u5e2e\u52a9\u4e2d\u7684\u4ee5\u4e0b\u4fe1\u606f\uff1a<\/p>\n
--lang FILE, -l FILE    read from FILE (default: \"english\")\r\n--port value, -p value  listening port (default: 8000)<\/pre>\n
 <\/p>\n
\u5bf9\u5e94\u4ee3\u7801\uff1a<\/p>\n
var language string\r\n\r\napp.Flags = []cli.Flag {\r\n    cli.IntFlag {\r\n        Name: \"port, p\",\r\n        Value: 8000,\r\n        Usage: \"listening port\",\r\n    },\r\n    cli.StringFlag {\r\n        Name: \"lang, l\",\r\n        Value: \"english\",\r\n        Usage: \"read from `FILE`\",\r\n        Destination: &language,\r\n    },\r\n}<\/pre>\n
 <\/p>\n
\u53ef\u4ee5\u770b\u5230\uff0c\u6bcf\u4e00\u4e2aflag\u90fd\u5bf9\u5e94\u4e00\u4e2acli.Flag\u63a5\u53e3\u7684\u5b9e\u4f8b\u3002<\/p>\n
Name\u5b57\u6bb5\u4e2d\u9017\u53f7\u540e\u9762\u7684\u5b57\u7b26\u8868\u793aflag\u7684\u7b80\u5199\uff0c\u4e5f\u5c31\u662f\u8bf4”–port”\u548c”-p”\u662f\u7b49\u4ef7\u7684\u3002<\/p>\n
Value\u5b57\u6bb5\u53ef\u4ee5\u6307\u5b9aflag\u7684\u9ed8\u8ba4\u503c\u3002<\/p>\n
Usage\u5b57\u6bb5\u662fflag\u7684\u63cf\u8ff0\u4fe1\u606f\u3002<\/p>\n
Destination\u5b57\u6bb5\u53ef\u4ee5\u4e3a\u8be5flag\u6307\u5b9a\u4e00\u4e2a\u63a5\u6536\u8005\uff0c\u6bd4\u5982\u4e0a\u9762\u7684language\u53d8\u91cf\u3002\u89e3\u6790\u5b8c”–lang”\u8fd9\u4e2aflag\u540e\u4f1a\u81ea\u52a8\u5b58\u50a8\u5230\u8fd9\u4e2a\u53d8\u91cf\u91cc\uff0c\u540e\u9762\u7684\u4ee3\u7801\u5c31\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u8fd9\u4e2a\u53d8\u91cf\u7684\u503c\u4e86\u3002<\/p>\n
\u53e6\u5916\uff0c\u5982\u679c\u4f60\u60f3\u7ed9\u7528\u6237\u589e\u52a0\u4e00\u4e9b\u5c5e\u6027\u503c\u7c7b\u578b\u7684\u63d0\u793a\uff0c\u53ef\u4ee5\u901a\u8fc7\u5360\u4f4d\u7b26\uff08placeholder\uff09\u6765\u5b9e\u73b0\uff0c\u6bd4\u5982\u4e0a\u9762\u7684”–lang FILE”\u3002\u5360\u4f4d\u7b26\u901a\u8fc7“\u7b26\u53f7\u6765\u6807\u8bc6\u3002<\/p>\n
\u6211\u4eec\u53ef\u4ee5\u5728app.Action\u4e2d\u6d4b\u8bd5\u4e00\u4e0b\u6253\u5370\u8fd9\u4e9bflag\u7684\u503c\uff1a<\/p>\n
app.Action = func(c *cli.Context) error {\r\n    fmt.Println(\"BOOM!\")\r\n    fmt.Println(c.String(\"lang\"), c.Int(\"port\"))\r\n    fmt.Println(language)\r\n    return nil\r\n}<\/pre>\n
 <\/p>\n
\u53e6\u5916\uff0c\u6b63\u5e38\u6765\u8bf4\u5e2e\u52a9\u4fe1\u606f\u91cc\u7684flag\u662f\u6309\u7167\u4ee3\u7801\u91cc\u7684\u58f0\u660e\u987a\u5e8f\u6392\u5217\u7684\uff0c\u5982\u679c\u4f60\u60f3\u8ba9\u5b83\u4eec\u6309\u7167\u5b57\u5178\u5e8f\u6392\u5217\u7684\u8bdd\uff0c\u53ef\u4ee5\u501f\u52a9\u4e8esort\uff1a<\/p>\n
import \"sort\"\r\nsort.Sort(cli.FlagsByName(app.Flags))<\/pre>\n
 <\/p>\n
\u6700\u540e\uff0chelp\u548cversion\u8fd9\u4e24\u4e2aflag\u6709\u9ed8\u8ba4\u5b9e\u73b0\uff0c\u4e5f\u53ef\u4ee5\u81ea\u5df1\u6539\uff1a<\/p>\n
cli.HelpFlag = cli.BoolFlag {\r\n    Name: \"help, h\",\r\n    Usage: \"Help!Help!\",\r\n}\r\n\r\ncli.VersionFlag = cli.BoolFlag {\r\n    Name: \"print-version, v\",\r\n    Usage: \"print version\",\r\n}<\/pre>\n
 <\/p>\n
<\/a>4. Command\u914d\u7f6e<\/h2>\n
\u547d\u4ee4\u884c\u7a0b\u5e8f\u9664\u4e86\u6709flag\uff0c\u8fd8\u6709command\uff08\u6bd4\u5982git log, git commit\u7b49\u7b49\uff09\u3002<\/p>\n
\u53e6\u5916\u6bcf\u4e2acommand\u53ef\u80fd\u8fd8\u6709subcommand\uff0c\u4e5f\u5c31\u5fc5\u987b\u8981\u901a\u8fc7\u6dfb\u52a0\u4e24\u4e2a\u547d\u4ee4\u884c\u53c2\u6570\u624d\u80fd\u5b8c\u6210\u76f8\u5e94\u7684\u64cd\u4f5c\u3002\u6bd4\u5982\u6211\u4eec\u7684db\u547d\u4ee4\u5305\u542b2\u4e2a\u5b50\u547d\u4ee4\uff0c\u5982\u679c\u8f93\u5165GoTest db -h\u4f1a\u663e\u793a\u4e0b\u9762\u7684\u4fe1\u606f\uff1a<\/p>\n
NAME:\r\n   GoTest db - database operations\r\n\r\nUSAGE:\r\n   GoTest db command [command options] [arguments...]\r\n\r\nCOMMANDS:\r\n     insert  insert data\r\n     delete  delete data\r\n\r\nOPTIONS:\r\n   --help, -h  Help!Help!\r\n<\/code><\/pre>\n
\u6bcf\u4e2acommand\u90fd\u5bf9\u5e94\u4e8e\u4e00\u4e2acli.Command\u63a5\u53e3\u7684\u5b9e\u4f8b\uff0c\u5165\u53e3\u51fd\u6570\u901a\u8fc7Action\u6307\u5b9a\u3002\u5982\u679c\u4f60\u60f3\u50cf\u5728\u5e2e\u52a9\u4fe1\u606f\u91cc\u5b9e\u73b0\u5206\u7ec4\u663e\u793a\uff0c\u53ef\u4ee5\u4e3a\u6bcf\u4e2acommand\u6307\u5b9a\u4e00\u4e2aCategory\u3002\u5177\u4f53\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
app.Commands = []cli.Command {\r\n    {\r\n        Name: \"add\",\r\n        Aliases: []string{\"a\"},\r\n        Usage: \"calc 1+1\",\r\n        Category: \"arithmetic\",\r\n        Action: func(c *cli.Context) error {\r\n            fmt.Println(\"1 + 1 = \", 1 + 1)\r\n            return nil\r\n        },\r\n    },\r\n    {\r\n        Name: \"sub\",\r\n        Aliases: []string{\"s\"},\r\n        Usage: \"calc 5-3\",\r\n        Category: \"arithmetic\",\r\n        Action: func(c *cli.Context) error {\r\n            fmt.Println(\"5 - 3 = \", 5 - 3)\r\n            return nil\r\n        },\r\n    },\r\n    {\r\n        Name: \"db\",\r\n        Usage: \"database operations\",\r\n        Category: \"database\",\r\n        Subcommands: []cli.Command {\r\n            {\r\n                Name: \"insert\",\r\n                Usage: \"insert data\",\r\n                Action: func(c *cli.Context) error {\r\n                    fmt.Println(\"insert subcommand\")\r\n                    return nil\r\n                },\r\n            },\r\n            {\r\n                Name: \"delete\",\r\n                Usage: \"delete data\",\r\n                Action: func(c *cli.Context) error {\r\n                    fmt.Println(\"delete subcommand\")\r\n                    return nil\r\n                },\r\n            },\r\n        },\r\n    },\r\n}<\/pre>\n
 <\/p>\n
\u5982\u679c\u4f60\u60f3\u5728command\u6267\u884c\u524d\u540e\u6267\u884c\u540e\u5b8c\u6210\u4e00\u4e9b\u64cd\u4f5c\uff0c\u53ef\u4ee5\u6307\u5b9aapp.Before\/app.After\u8fd9\u4e24\u4e2a\u5b57\u6bb5\uff1a<\/p>\n
app.Before = func(c *cli.Context) error {\r\n    fmt.Println(\"app Before\")\r\n    return nil\r\n}\r\napp.After = func(c *cli.Context) error {\r\n    fmt.Println(\"app After\")\r\n    return nil\r\n}<\/pre>\n
 <\/p>\n
\u5177\u4f53\u6d4b\u8bd5\u4e00\u4e0b\uff1a<\/p>\n
$ GoTest add\r\n$ GoTest db insert<\/pre>\n
 <\/p>\n
<\/a>5. \u5c0f\u7ed3<\/h2>\n
\u603b\u4f53\u6765\u8bf4\uff0curfave\/cli\u8fd9\u4e2a\u5e93\u8fd8\u662f\u5f88\u597d\u7528\u7684\uff0c\u5b8c\u6210\u4e86\u5f88\u591aroutine\u7684\u5de5\u4f5c\uff0c\u7a0b\u5e8f\u5458\u53ea\u9700\u8981\u4e13\u6ce8\u4e8e\u5177\u4f53\u4e1a\u52a1\u903b\u8f91\u7684\u5b9e\u73b0\u3002<\/p>\n
\u9644\u5b8c\u6574demo\u4ee3\u7801\uff1a<\/p>\n
package cli\r\n\r\nimport (\r\n    \"fmt\"\r\n    \"os\"\r\n    \"log\"\r\n    \"sort\"\r\n    \"gopkg.in\/urfave\/cli.v1\"\r\n)\r\n\r\nfunc Run() {\r\n    var language string\r\n\r\n    app := cli.NewApp()\r\n    app.Name = \"GoTest\"\r\n    app.Usage = \"hello world\"\r\n    app.Version = \"1.2.3\"\r\n    app.Flags = []cli.Flag {\r\n        cli.IntFlag {\r\n            Name: \"port, p\",\r\n            Value: 8000,\r\n            Usage: \"listening port\",\r\n        },\r\n        cli.StringFlag {\r\n            Name: \"lang, l\",\r\n            Value: \"english\",\r\n            Usage: \"read from `FILE`\",\r\n            Destination: &language,\r\n        },\r\n    }\r\n    app.Commands = []cli.Command {\r\n        {\r\n            Name: \"add\",\r\n            Aliases: []string{\"a\"},\r\n            Usage: \"calc 1+1\",\r\n            Category: \"arithmetic\",\r\n            Action: func(c *cli.Context) error {\r\n                fmt.Println(\"1 + 1 = \", 1 + 1)\r\n                return nil\r\n            },\r\n        },\r\n        {\r\n            Name: \"sub\",\r\n            Aliases: []string{\"s\"},\r\n            Usage: \"calc 5-3\",\r\n            Category: \"arithmetic\",\r\n            Action: func(c *cli.Context) error {\r\n                fmt.Println(\"5 - 3 = \", 5 - 3)\r\n                return nil\r\n            },\r\n        },\r\n        {\r\n            Name: \"db\",\r\n            Usage: \"database operations\",\r\n            Category: \"database\",\r\n            Subcommands: []cli.Command {\r\n                {\r\n                    Name: \"insert\",\r\n                    Usage: \"insert data\",\r\n                    Action: func(c *cli.Context) error {\r\n                        fmt.Println(\"insert subcommand\")\r\n                        return nil\r\n                    },\r\n                },\r\n                {\r\n                    Name: \"delete\",\r\n                    Usage: \"delete data\",\r\n                    Action: func(c *cli.Context) error {\r\n                        fmt.Println(\"delete subcommand\")\r\n                        return nil\r\n                    },\r\n                },\r\n            },\r\n        },\r\n    }\r\n    app.Action = func(c *cli.Context) error {\r\n        fmt.Println(\"BOOM!\")\r\n        fmt.Println(c.String(\"lang\"), c.Int(\"port\"))\r\n        fmt.Println(language)\r\n\r\n        \/\/ if c.Int(\"port\") == 8000 {\r\n        \/\/ \treturn cli.NewExitError(\"invalid port\", 88)\r\n        \/\/ }\r\n\r\n        return nil\r\n    }\r\n    app.Before = func(c *cli.Context) error {\r\n        fmt.Println(\"app Before\")\r\n        return nil\r\n    }\r\n    app.After = func(c *cli.Context) error {\r\n        fmt.Println(\"app After\")\r\n        return nil\r\n    }\r\n\r\n    sort.Sort(cli.FlagsByName(app.Flags))\r\n\r\n    cli.HelpFlag = cli.BoolFlag {\r\n        Name: \"help, h\",\r\n        Usage: \"Help!Help!\",\r\n    }\r\n    \r\n    cli.VersionFlag = cli.BoolFlag {\r\n        Name: \"print-version, v\",\r\n        Usage: \"print version\",\r\n    }\r\n\r\n    err := app.Run(os.Args)\r\n    if err != nil {\r\n        log.Fatal(err)\r\n    }\r\n}<\/pre>\n
 <\/p>\n
\u66f4\u591a\u6587\u7ae0\u6b22\u8fce\u5173\u6ce8\u201c\u946b\u946b\u70b9\u706f\u201d\u4e13\u680f\uff1ahttps:\/\/blog.csdn.net\/turkeycock\/article\/category\/7669858<\/a><\/p>\n<\/div>\n<\/div>\n<\/article>\n","protected":false},"excerpt":{"rendered":"
\u00a0\u7248\u6743\u58f0\u660e\uff1a\u672c\u6587\u4e3a\u535a\u4e3b\u539f\u521b\u6587\u7ae0\uff0c\u672a\u7ecf\u535a\u4e3b<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[],"tags":[122],"class_list":["post-2894","post","type-post","status-publish","format-standard","hentry","tag-06-godocker"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/2894","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=2894"}],"version-history":[{"count":0,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/2894\/revisions"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=2894"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=2894"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=2894"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}