uint.go

Documentation: github.com/spf13/pflag

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