vanity

vanity - A tiny server for golang vanity redirects
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uint_slice.go (4693B)

      1 package pflag
      2 
      3 import (
      4 	"fmt"
      5 	"strconv"
      6 	"strings"
      7 )
      8 
      9 // -- uintSlice Value
     10 type uintSliceValue struct {
     11 	value   *[]uint
     12 	changed bool
     13 }
     14 
     15 func newUintSliceValue(val []uint, p *[]uint) *uintSliceValue {
     16 	uisv := new(uintSliceValue)
     17 	uisv.value = p
     18 	*uisv.value = val
     19 	return uisv
     20 }
     21 
     22 func (s *uintSliceValue) Set(val string) error {
     23 	ss := strings.Split(val, ",")
     24 	out := make([]uint, len(ss))
     25 	for i, d := range ss {
     26 		u, err := strconv.ParseUint(d, 10, 0)
     27 		if err != nil {
     28 			return err
     29 		}
     30 		out[i] = uint(u)
     31 	}
     32 	if !s.changed {
     33 		*s.value = out
     34 	} else {
     35 		*s.value = append(*s.value, out...)
     36 	}
     37 	s.changed = true
     38 	return nil
     39 }
     40 
     41 func (s *uintSliceValue) Type() string {
     42 	return "uintSlice"
     43 }
     44 
     45 func (s *uintSliceValue) String() string {
     46 	out := make([]string, len(*s.value))
     47 	for i, d := range *s.value {
     48 		out[i] = fmt.Sprintf("%d", d)
     49 	}
     50 	return "[" + strings.Join(out, ",") + "]"
     51 }
     52 
     53 func (s *uintSliceValue) fromString(val string) (uint, error) {
     54 	t, err := strconv.ParseUint(val, 10, 0)
     55 	if err != nil {
     56 		return 0, err
     57 	}
     58 	return uint(t), nil
     59 }
     60 
     61 func (s *uintSliceValue) toString(val uint) string {
     62 	return fmt.Sprintf("%d", val)
     63 }
     64 
     65 func (s *uintSliceValue) Append(val string) error {
     66 	i, err := s.fromString(val)
     67 	if err != nil {
     68 		return err
     69 	}
     70 	*s.value = append(*s.value, i)
     71 	return nil
     72 }
     73 
     74 func (s *uintSliceValue) Replace(val []string) error {
     75 	out := make([]uint, len(val))
     76 	for i, d := range val {
     77 		var err error
     78 		out[i], err = s.fromString(d)
     79 		if err != nil {
     80 			return err
     81 		}
     82 	}
     83 	*s.value = out
     84 	return nil
     85 }
     86 
     87 func (s *uintSliceValue) GetSlice() []string {
     88 	out := make([]string, len(*s.value))
     89 	for i, d := range *s.value {
     90 		out[i] = s.toString(d)
     91 	}
     92 	return out
     93 }
     94 
     95 func uintSliceConv(val string) (interface{}, error) {
     96 	val = strings.Trim(val, "[]")
     97 	// Empty string would cause a slice with one (empty) entry
     98 	if len(val) == 0 {
     99 		return []uint{}, nil
    100 	}
    101 	ss := strings.Split(val, ",")
    102 	out := make([]uint, len(ss))
    103 	for i, d := range ss {
    104 		u, err := strconv.ParseUint(d, 10, 0)
    105 		if err != nil {
    106 			return nil, err
    107 		}
    108 		out[i] = uint(u)
    109 	}
    110 	return out, nil
    111 }
    112 
    113 // GetUintSlice returns the []uint value of a flag with the given name.
    114 func (f *FlagSet) GetUintSlice(name string) ([]uint, error) {
    115 	val, err := f.getFlagType(name, "uintSlice", uintSliceConv)
    116 	if err != nil {
    117 		return []uint{}, err
    118 	}
    119 	return val.([]uint), nil
    120 }
    121 
    122 // UintSliceVar defines a uintSlice flag with specified name, default value, and usage string.
    123 // The argument p points to a []uint variable in which to store the value of the flag.
    124 func (f *FlagSet) UintSliceVar(p *[]uint, name string, value []uint, usage string) {
    125 	f.VarP(newUintSliceValue(value, p), name, "", usage)
    126 }
    127 
    128 // UintSliceVarP is like UintSliceVar, but accepts a shorthand letter that can be used after a single dash.
    129 func (f *FlagSet) UintSliceVarP(p *[]uint, name, shorthand string, value []uint, usage string) {
    130 	f.VarP(newUintSliceValue(value, p), name, shorthand, usage)
    131 }
    132 
    133 // UintSliceVar defines a uint[] flag with specified name, default value, and usage string.
    134 // The argument p points to a uint[] variable in which to store the value of the flag.
    135 func UintSliceVar(p *[]uint, name string, value []uint, usage string) {
    136 	CommandLine.VarP(newUintSliceValue(value, p), name, "", usage)
    137 }
    138 
    139 // UintSliceVarP is like the UintSliceVar, but accepts a shorthand letter that can be used after a single dash.
    140 func UintSliceVarP(p *[]uint, name, shorthand string, value []uint, usage string) {
    141 	CommandLine.VarP(newUintSliceValue(value, p), name, shorthand, usage)
    142 }
    143 
    144 // UintSlice defines a []uint flag with specified name, default value, and usage string.
    145 // The return value is the address of a []uint variable that stores the value of the flag.
    146 func (f *FlagSet) UintSlice(name string, value []uint, usage string) *[]uint {
    147 	p := []uint{}
    148 	f.UintSliceVarP(&p, name, "", value, usage)
    149 	return &p
    150 }
    151 
    152 // UintSliceP is like UintSlice, but accepts a shorthand letter that can be used after a single dash.
    153 func (f *FlagSet) UintSliceP(name, shorthand string, value []uint, usage string) *[]uint {
    154 	p := []uint{}
    155 	f.UintSliceVarP(&p, name, shorthand, value, usage)
    156 	return &p
    157 }
    158 
    159 // UintSlice defines a []uint flag with specified name, default value, and usage string.
    160 // The return value is the address of a []uint variable that stores the value of the flag.
    161 func UintSlice(name string, value []uint, usage string) *[]uint {
    162 	return CommandLine.UintSliceP(name, "", value, usage)
    163 }
    164 
    165 // UintSliceP is like UintSlice, but accepts a shorthand letter that can be used after a single dash.
    166 func UintSliceP(name, shorthand string, value []uint, usage string) *[]uint {
    167 	return CommandLine.UintSliceP(name, shorthand, value, usage)
    168 }