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Published: Oct 11, 2017 License: BSD-3-Clause Imports: 6 Imported by: 0



Package cmdflag handles flag processing common to several go tools.



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func IsBool

func IsBool(v flag.Value) bool

IsBool reports whether v is a bool flag.

func SetBool

func SetBool(cmd string, flag *bool, value string)

SetBool sets the addressed boolean to the value.

func SetInt

func SetInt(cmd string, flag *int, value string)

SetInt sets the addressed integer to the value.

func SyntaxError

func SyntaxError(cmd, msg string)

SyntaxError reports an argument syntax error and exits the program.


type Defn

type Defn struct {
	Name       string     // Name on command line.
	BoolVar    *bool      // If it's a boolean flag, this points to it.
	Value      flag.Value // The flag.Value represented.
	PassToTest bool       // Pass to the test binary? Used only by go test.
	Present    bool       // Flag has been seen.

Defn defines a flag we know about.

func Parse

func Parse(cmd string, defns []*Defn, args []string, i int) (f *Defn, value string, extra bool)

Parse sees if argument i is present in the definitions and if so, returns its definition, value, and whether it consumed an extra word. If the flag begins (cmd+".") it is ignored for the purpose of this function.

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