uint8.go

Documentation: github.com/spf13/pflag

     1  package pflag
     2  
     3  import "strconv"
     4  
     5  // -- uint8 Value
     6  type uint8Value uint8
     7  
     8  func newUint8Value(val uint8, p *uint8) *uint8Value {
     9  	*p = val
    10  	return (*uint8Value)(p)
    11  }
    12  
    13  func (i *uint8Value) Set(s string) error {
    14  	v, err := strconv.ParseUint(s, 0, 8)
    15  	*i = uint8Value(v)
    16  	return err
    17  }
    18  
    19  func (i *uint8Value) Type() string {
    20  	return "uint8"
    21  }
    22  
    23  func (i *uint8Value) String() string { return strconv.FormatUint(uint64(*i), 10) }
    24  
    25  func uint8Conv(sval string) (interface{}, error) {
    26  	v, err := strconv.ParseUint(sval, 0, 8)
    27  	if err != nil {
    28  		return 0, err
    29  	}
    30  	return uint8(v), nil
    31  }
    32  
    33  // GetUint8 return the uint8 value of a flag with the given name
    34  func (f *FlagSet) GetUint8(name string) (uint8, error) {
    35  	val, err := f.getFlagType(name, "uint8", uint8Conv)
    36  	if err != nil {
    37  		return 0, err
    38  	}
    39  	return val.(uint8), nil
    40  }
    41  
    42  // Uint8Var defines a uint8 flag with specified name, default value, and usage string.
    43  // The argument p points to a uint8 variable in which to store the value of the flag.
    44  func (f *FlagSet) Uint8Var(p *uint8, name string, value uint8, usage string) {
    45  	f.VarP(newUint8Value(value, p), name, "", usage)
    46  }
    47  
    48  // Uint8VarP is like Uint8Var, but accepts a shorthand letter that can be used after a single dash.
    49  func (f *FlagSet) Uint8VarP(p *uint8, name, shorthand string, value uint8, usage string) {
    50  	f.VarP(newUint8Value(value, p), name, shorthand, usage)
    51  }
    52  
    53  // Uint8Var defines a uint8 flag with specified name, default value, and usage string.
    54  // The argument p points to a uint8 variable in which to store the value of the flag.
    55  func Uint8Var(p *uint8, name string, value uint8, usage string) {
    56  	CommandLine.VarP(newUint8Value(value, p), name, "", usage)
    57  }
    58  
    59  // Uint8VarP is like Uint8Var, but accepts a shorthand letter that can be used after a single dash.
    60  func Uint8VarP(p *uint8, name, shorthand string, value uint8, usage string) {
    61  	CommandLine.VarP(newUint8Value(value, p), name, shorthand, usage)
    62  }
    63  
    64  // Uint8 defines a uint8 flag with specified name, default value, and usage string.
    65  // The return value is the address of a uint8 variable that stores the value of the flag.
    66  func (f *FlagSet) Uint8(name string, value uint8, usage string) *uint8 {
    67  	p := new(uint8)
    68  	f.Uint8VarP(p, name, "", value, usage)
    69  	return p
    70  }
    71  
    72  // Uint8P is like Uint8, but accepts a shorthand letter that can be used after a single dash.
    73  func (f *FlagSet) Uint8P(name, shorthand string, value uint8, usage string) *uint8 {
    74  	p := new(uint8)
    75  	f.Uint8VarP(p, name, shorthand, value, usage)
    76  	return p
    77  }
    78  
    79  // Uint8 defines a uint8 flag with specified name, default value, and usage string.
    80  // The return value is the address of a uint8 variable that stores the value of the flag.
    81  func Uint8(name string, value uint8, usage string) *uint8 {
    82  	return CommandLine.Uint8P(name, "", value, usage)
    83  }
    84  
    85  // Uint8P is like Uint8, but accepts a shorthand letter that can be used after a single dash.
    86  func Uint8P(name, shorthand string, value uint8, usage string) *uint8 {
    87  	return CommandLine.Uint8P(name, shorthand, value, usage)
    88  }
    89
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