#32 fix 使用slice變數,默認進入貪婪模式
https://github.com/guonaihong/clop
https://gitee.com/guonaihong/clop
clop 是一款基於struct的命令行解析器,麻雀雖小,五臟俱全。(從零實現)
支持環境變數綁定 env DEBUG=xx ./proc
支持參數搜集 cat a.txt b.txt
,可以把a.txt, b.txt
散裝成員歸歸類,收集到你指定的結構體成員里
支持短選項proc -d
或者長選項proc --debug
不在話下
posix風格命令行支持,支持命令組合ls -ltr
是ls -l -t -r
簡寫形式,方便實現普通posix 標準命令
子命令支持,方便實現git風格子命令git add
,簡潔的子命令註冊方式,只要會寫結構提就行,3,4,5到無窮盡子命令也支持,只要你喜歡,用上clop就可以實現
默認值支持default:"1"
,支持多種數據類型,讓你省去類型轉換的煩惱
貼心的重複命令報錯
嚴格的短選項,長選項報錯。避免二義性選項誕生
效驗模式支持,不需要寫一堆的if x!= ""
or if y!=0
浪費青春的代碼
go get github.com/guonaihong/clop
package mainimport ( "fmt""github.com/guonaihong/clop")type Hello struct { File string `clop:"-f; --file" usage:"file"`}func main() { h := Hello{} clop.Bind(&h) fmt.Printf("%#v\n", h) }// ./one -f test// main.Hello{File:"test"}// ./one --file test// main.Hello{File:"test"}
package mainimport ("fmt""github.com/guonaihong/clop")type curl struct {Url string `clop:"-u; --url" usage:"url" valid:"required"`}func main() { c := curl{} clop.Bind(&c) }
可以使用default tag設置默認值,普通類型直接寫,複合類型用json表示
package mainimport ("fmt""github.com/guonaihong/clop")type defaultExample struct {Int int `default:"1"`Float64 float64 `default:"3.64"`Float32 float32 `default:"3.32"`SliceString []string `default:"[\"one\", \"two\"]"`SliceInt []int `default:"[1,2,3,4,5]"`SliceFloat64 []float64 `default:"[1.1,2.2,3.3,4.4,5.5]"`}func main() { de := defaultExample{} clop.Bind(&de) fmt.Printf("%v\n", de) }// run// ./use_def// output:// {1 3.64 3.32 [one two] [1 2 3 4 5] [1.1 2.2 3.3 4.4 5.5]}
// file name use_env.gopackage mainimport ( "fmt""github.com/guonaihong/clop")type env struct { OmpNumThread string `clop:"env=omp_num_thread" usage:"omp num thread"`Path string `clop:"env=XPATH" usage:"xpath"`Max int `clop:"env=MAX" usage:"max thread"`}func main() { e := env{} clop.Bind(&e) fmt.Printf("%#v\n", e) }// run// env XPATH=`pwd` omp_num_thread=3 MAX=4 ./use_env // output// main.env{OmpNumThread:"3", Path:"/home/guo", Max:4}
package mainimport ( "fmt""github.com/guonaihong/clop")type add struct { All bool `clop:"-A; --all" usage:"add changes from all tracked and untracked files"`Force bool `clop:"-f; --force" usage:"allow adding otherwise ignored files"`Pathspec []string `clop:"args=pathspec"`}type mv struct { Force bool `clop:"-f; --force" usage:"allow adding otherwise ignored files"`}type git struct { Add add `clop:"subcommand=add" usage:"Add file contents to the index"`Mv mv `clop:"subcommand=mv" usage:"Move or rename a file, a directory, or a symlink"`}func main() { g := git{} clop.Bind(&g) fmt.Printf("git:%#v\n", g) fmt.Printf("git:set mv(%t) or set add(%t)\n", clop.IsSetSubcommand("mv"), clop.IsSetSubcommand("add")) }// run:// ./git add -f// output:// git:main.git{Add:main.add{All:false, Force:true, Pathspec:[]string(nil)}, Mv:main.mv{Force:false}}// git:set mv(false) or set add(true)
package mainimport ( "fmt""github.com/guonaihong/clop")type cat struct { NumberNonblank bool `clop:"-c;--number-nonblank" usage:"number nonempty output lines, overrides"`ShowEnds bool `clop:"-E;--show-ends" usage:"display $ at end of each line"`Number bool `clop:"-n;--number" usage:"number all output lines"`SqueezeBlank bool `clop:"-s;--squeeze-blank" usage:"suppress repeated empty output lines"`ShowTab bool `clop:"-T;--show-tabs" usage:"display TAB characters as ^I"`ShowNonprinting bool `clop:"-v;--show-nonprinting" usage:"use ^ and M- notation, except for LFD and TAB" `Files []string `clop:"args=files"`}func main() { c := cat{} err := clop.Bind(&c) fmt.Printf("%#v, %s\n", c, err) }/*Usage: ./cat [Flags]Flags: -E,--show-ends display $ at end of each line -T,--show-tabs display TAB characters as ^I -c,--number-nonblank number nonempty output lines, overrides -n,--number number all output lines -s,--squeeze-blank suppress repeated empty output lines -v,--show-nonprinting use ^ and M- notation, except for LFD and TAB Args: */
[admin
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