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