vanity

vanity - A tiny server for golang vanity redirects
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string.go (2925B)

      1 package pflag
      2 
      3 // -- string Value
      4 type stringValue string
      5 
      6 func newStringValue(val string, p *string) *stringValue {
      7 	*p = val
      8 	return (*stringValue)(p)
      9 }
     10 
     11 func (s *stringValue) Set(val string) error {
     12 	*s = stringValue(val)
     13 	return nil
     14 }
     15 func (s *stringValue) Type() string {
     16 	return "string"
     17 }
     18 
     19 func (s *stringValue) String() string { return string(*s) }
     20 
     21 func stringConv(sval string) (interface{}, error) {
     22 	return sval, nil
     23 }
     24 
     25 // GetString return the string value of a flag with the given name
     26 func (f *FlagSet) GetString(name string) (string, error) {
     27 	val, err := f.getFlagType(name, "string", stringConv)
     28 	if err != nil {
     29 		return "", err
     30 	}
     31 	return val.(string), nil
     32 }
     33 
     34 // StringVar defines a string flag with specified name, default value, and usage string.
     35 // The argument p points to a string variable in which to store the value of the flag.
     36 func (f *FlagSet) StringVar(p *string, name string, value string, usage string) {
     37 	f.VarP(newStringValue(value, p), name, "", usage)
     38 }
     39 
     40 // StringVarP is like StringVar, but accepts a shorthand letter that can be used after a single dash.
     41 func (f *FlagSet) StringVarP(p *string, name, shorthand string, value string, usage string) {
     42 	f.VarP(newStringValue(value, p), name, shorthand, usage)
     43 }
     44 
     45 // StringVar defines a string flag with specified name, default value, and usage string.
     46 // The argument p points to a string variable in which to store the value of the flag.
     47 func StringVar(p *string, name string, value string, usage string) {
     48 	CommandLine.VarP(newStringValue(value, p), name, "", usage)
     49 }
     50 
     51 // StringVarP is like StringVar, but accepts a shorthand letter that can be used after a single dash.
     52 func StringVarP(p *string, name, shorthand string, value string, usage string) {
     53 	CommandLine.VarP(newStringValue(value, p), name, shorthand, usage)
     54 }
     55 
     56 // String defines a string flag with specified name, default value, and usage string.
     57 // The return value is the address of a string variable that stores the value of the flag.
     58 func (f *FlagSet) String(name string, value string, usage string) *string {
     59 	p := new(string)
     60 	f.StringVarP(p, name, "", value, usage)
     61 	return p
     62 }
     63 
     64 // StringP is like String, but accepts a shorthand letter that can be used after a single dash.
     65 func (f *FlagSet) StringP(name, shorthand string, value string, usage string) *string {
     66 	p := new(string)
     67 	f.StringVarP(p, name, shorthand, value, usage)
     68 	return p
     69 }
     70 
     71 // String defines a string flag with specified name, default value, and usage string.
     72 // The return value is the address of a string variable that stores the value of the flag.
     73 func String(name string, value string, usage string) *string {
     74 	return CommandLine.StringP(name, "", value, usage)
     75 }
     76 
     77 // StringP is like String, but accepts a shorthand letter that can be used after a single dash.
     78 func StringP(name, shorthand string, value string, usage string) *string {
     79 	return CommandLine.StringP(name, shorthand, value, usage)
     80 }