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1 package pflag |
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2 |
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3 import ( |
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4 "bytes" |
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5 "fmt" |
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6 "strconv" |
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7 "strings" |
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8 ) |
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9 |
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10 // -- stringToInt64 Value |
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11 type stringToInt64Value struct { |
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12 value *map[string]int64 |
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13 changed bool |
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14 } |
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15 |
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16 func newStringToInt64Value(val map[string]int64, p *map[string]int64) *stringToInt64Value { |
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17 ssv := new(stringToInt64Value) |
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18 ssv.value = p |
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19 *ssv.value = val |
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20 return ssv |
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21 } |
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22 |
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23 // Format: a=1,b=2 |
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24 func (s *stringToInt64Value) Set(val string) error { |
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25 ss := strings.Split(val, ",") |
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26 out := make(map[string]int64, len(ss)) |
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27 for _, pair := range ss { |
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28 kv := strings.SplitN(pair, "=", 2) |
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29 if len(kv) != 2 { |
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30 return fmt.Errorf("%s must be formatted as key=value", pair) |
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31 } |
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32 var err error |
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33 out[kv[0]], err = strconv.ParseInt(kv[1], 10, 64) |
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34 if err != nil { |
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35 return err |
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36 } |
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37 } |
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38 if !s.changed { |
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39 *s.value = out |
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40 } else { |
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41 for k, v := range out { |
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42 (*s.value)[k] = v |
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43 } |
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44 } |
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45 s.changed = true |
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46 return nil |
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47 } |
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48 |
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49 func (s *stringToInt64Value) Type() string { |
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50 return "stringToInt64" |
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51 } |
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52 |
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53 func (s *stringToInt64Value) String() string { |
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54 var buf bytes.Buffer |
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55 i := 0 |
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56 for k, v := range *s.value { |
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57 if i > 0 { |
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58 buf.WriteRune(',') |
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59 } |
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60 buf.WriteString(k) |
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61 buf.WriteRune('=') |
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62 buf.WriteString(strconv.FormatInt(v, 10)) |
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63 i++ |
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64 } |
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65 return "[" + buf.String() + "]" |
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66 } |
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67 |
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68 func stringToInt64Conv(val string) (interface{}, error) { |
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69 val = strings.Trim(val, "[]") |
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70 // An empty string would cause an empty map |
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71 if len(val) == 0 { |
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72 return map[string]int64{}, nil |
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73 } |
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74 ss := strings.Split(val, ",") |
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75 out := make(map[string]int64, len(ss)) |
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76 for _, pair := range ss { |
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77 kv := strings.SplitN(pair, "=", 2) |
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78 if len(kv) != 2 { |
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79 return nil, fmt.Errorf("%s must be formatted as key=value", pair) |
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80 } |
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81 var err error |
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82 out[kv[0]], err = strconv.ParseInt(kv[1], 10, 64) |
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83 if err != nil { |
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84 return nil, err |
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85 } |
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86 } |
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87 return out, nil |
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88 } |
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89 |
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90 // GetStringToInt64 return the map[string]int64 value of a flag with the given name |
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91 func (f *FlagSet) GetStringToInt64(name string) (map[string]int64, error) { |
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92 val, err := f.getFlagType(name, "stringToInt64", stringToInt64Conv) |
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93 if err != nil { |
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94 return map[string]int64{}, err |
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95 } |
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96 return val.(map[string]int64), nil |
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97 } |
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98 |
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99 // StringToInt64Var defines a string flag with specified name, default value, and usage string. |
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100 // The argument p point64s to a map[string]int64 variable in which to store the values of the multiple flags. |
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101 // The value of each argument will not try to be separated by comma |
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102 func (f *FlagSet) StringToInt64Var(p *map[string]int64, name string, value map[string]int64, usage string) { |
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103 f.VarP(newStringToInt64Value(value, p), name, "", usage) |
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104 } |
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105 |
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106 // StringToInt64VarP is like StringToInt64Var, but accepts a shorthand letter that can be used after a single dash. |
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107 func (f *FlagSet) StringToInt64VarP(p *map[string]int64, name, shorthand string, value map[string]int64, usage string) { |
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108 f.VarP(newStringToInt64Value(value, p), name, shorthand, usage) |
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109 } |
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110 |
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111 // StringToInt64Var defines a string flag with specified name, default value, and usage string. |
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112 // The argument p point64s to a map[string]int64 variable in which to store the value of the flag. |
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113 // The value of each argument will not try to be separated by comma |
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114 func StringToInt64Var(p *map[string]int64, name string, value map[string]int64, usage string) { |
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115 CommandLine.VarP(newStringToInt64Value(value, p), name, "", usage) |
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116 } |
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117 |
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118 // StringToInt64VarP is like StringToInt64Var, but accepts a shorthand letter that can be used after a single dash. |
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119 func StringToInt64VarP(p *map[string]int64, name, shorthand string, value map[string]int64, usage string) { |
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120 CommandLine.VarP(newStringToInt64Value(value, p), name, shorthand, usage) |
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121 } |
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122 |
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123 // StringToInt64 defines a string flag with specified name, default value, and usage string. |
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124 // The return value is the address of a map[string]int64 variable that stores the value of the flag. |
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125 // The value of each argument will not try to be separated by comma |
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126 func (f *FlagSet) StringToInt64(name string, value map[string]int64, usage string) *map[string]int64 { |
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127 p := map[string]int64{} |
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128 f.StringToInt64VarP(&p, name, "", value, usage) |
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129 return &p |
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130 } |
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131 |
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132 // StringToInt64P is like StringToInt64, but accepts a shorthand letter that can be used after a single dash. |
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133 func (f *FlagSet) StringToInt64P(name, shorthand string, value map[string]int64, usage string) *map[string]int64 { |
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134 p := map[string]int64{} |
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135 f.StringToInt64VarP(&p, name, shorthand, value, usage) |
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136 return &p |
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137 } |
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138 |
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139 // StringToInt64 defines a string flag with specified name, default value, and usage string. |
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140 // The return value is the address of a map[string]int64 variable that stores the value of the flag. |
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141 // The value of each argument will not try to be separated by comma |
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142 func StringToInt64(name string, value map[string]int64, usage string) *map[string]int64 { |
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143 return CommandLine.StringToInt64P(name, "", value, usage) |
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144 } |
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145 |
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146 // StringToInt64P is like StringToInt64, but accepts a shorthand letter that can be used after a single dash. |
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147 func StringToInt64P(name, shorthand string, value map[string]int64, usage string) *map[string]int64 { |
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148 return CommandLine.StringToInt64P(name, shorthand, value, usage) |
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149 } |