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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 // -- int64Slice Value |
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10 type int64SliceValue struct { |
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11 value *[]int64 |
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12 changed bool |
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13 } |
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14 |
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15 func newInt64SliceValue(val []int64, p *[]int64) *int64SliceValue { |
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16 isv := new(int64SliceValue) |
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17 isv.value = p |
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18 *isv.value = val |
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19 return isv |
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20 } |
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21 |
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22 func (s *int64SliceValue) Set(val string) error { |
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23 ss := strings.Split(val, ",") |
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24 out := make([]int64, len(ss)) |
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25 for i, d := range ss { |
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26 var err error |
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27 out[i], err = strconv.ParseInt(d, 0, 64) |
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28 if err != nil { |
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29 return err |
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30 } |
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31 |
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32 } |
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33 if !s.changed { |
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34 *s.value = out |
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35 } else { |
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36 *s.value = append(*s.value, out...) |
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37 } |
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38 s.changed = true |
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39 return nil |
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40 } |
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41 |
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42 func (s *int64SliceValue) Type() string { |
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43 return "int64Slice" |
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44 } |
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45 |
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46 func (s *int64SliceValue) String() string { |
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47 out := make([]string, len(*s.value)) |
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48 for i, d := range *s.value { |
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49 out[i] = fmt.Sprintf("%d", d) |
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50 } |
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51 return "[" + strings.Join(out, ",") + "]" |
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52 } |
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53 |
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54 func (s *int64SliceValue) fromString(val string) (int64, error) { |
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55 return strconv.ParseInt(val, 0, 64) |
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56 } |
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57 |
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58 func (s *int64SliceValue) toString(val int64) string { |
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59 return fmt.Sprintf("%d", val) |
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60 } |
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61 |
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62 func (s *int64SliceValue) Append(val string) error { |
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63 i, err := s.fromString(val) |
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64 if err != nil { |
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65 return err |
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66 } |
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67 *s.value = append(*s.value, i) |
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68 return nil |
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69 } |
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70 |
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71 func (s *int64SliceValue) Replace(val []string) error { |
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72 out := make([]int64, len(val)) |
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73 for i, d := range val { |
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74 var err error |
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75 out[i], err = s.fromString(d) |
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76 if err != nil { |
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77 return err |
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78 } |
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79 } |
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80 *s.value = out |
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81 return nil |
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82 } |
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83 |
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84 func (s *int64SliceValue) GetSlice() []string { |
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85 out := make([]string, len(*s.value)) |
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86 for i, d := range *s.value { |
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87 out[i] = s.toString(d) |
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88 } |
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89 return out |
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90 } |
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91 |
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92 func int64SliceConv(val string) (interface{}, error) { |
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93 val = strings.Trim(val, "[]") |
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94 // Empty string would cause a slice with one (empty) entry |
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95 if len(val) == 0 { |
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96 return []int64{}, nil |
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97 } |
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98 ss := strings.Split(val, ",") |
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99 out := make([]int64, len(ss)) |
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100 for i, d := range ss { |
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101 var err error |
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102 out[i], err = strconv.ParseInt(d, 0, 64) |
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103 if err != nil { |
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104 return nil, err |
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105 } |
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106 |
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107 } |
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108 return out, nil |
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109 } |
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110 |
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111 // GetInt64Slice return the []int64 value of a flag with the given name |
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112 func (f *FlagSet) GetInt64Slice(name string) ([]int64, error) { |
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113 val, err := f.getFlagType(name, "int64Slice", int64SliceConv) |
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114 if err != nil { |
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115 return []int64{}, err |
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116 } |
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117 return val.([]int64), nil |
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118 } |
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119 |
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120 // Int64SliceVar defines a int64Slice flag with specified name, default value, and usage string. |
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121 // The argument p points to a []int64 variable in which to store the value of the flag. |
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122 func (f *FlagSet) Int64SliceVar(p *[]int64, name string, value []int64, usage string) { |
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123 f.VarP(newInt64SliceValue(value, p), name, "", usage) |
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124 } |
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125 |
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126 // Int64SliceVarP is like Int64SliceVar, but accepts a shorthand letter that can be used after a single dash. |
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127 func (f *FlagSet) Int64SliceVarP(p *[]int64, name, shorthand string, value []int64, usage string) { |
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128 f.VarP(newInt64SliceValue(value, p), name, shorthand, usage) |
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129 } |
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130 |
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131 // Int64SliceVar defines a int64[] flag with specified name, default value, and usage string. |
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132 // The argument p points to a int64[] variable in which to store the value of the flag. |
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133 func Int64SliceVar(p *[]int64, name string, value []int64, usage string) { |
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134 CommandLine.VarP(newInt64SliceValue(value, p), name, "", usage) |
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135 } |
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136 |
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137 // Int64SliceVarP is like Int64SliceVar, but accepts a shorthand letter that can be used after a single dash. |
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138 func Int64SliceVarP(p *[]int64, name, shorthand string, value []int64, usage string) { |
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139 CommandLine.VarP(newInt64SliceValue(value, p), name, shorthand, usage) |
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140 } |
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141 |
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142 // Int64Slice defines a []int64 flag with specified name, default value, and usage string. |
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143 // The return value is the address of a []int64 variable that stores the value of the flag. |
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144 func (f *FlagSet) Int64Slice(name string, value []int64, usage string) *[]int64 { |
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145 p := []int64{} |
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146 f.Int64SliceVarP(&p, name, "", value, usage) |
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147 return &p |
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148 } |
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149 |
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150 // Int64SliceP is like Int64Slice, but accepts a shorthand letter that can be used after a single dash. |
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151 func (f *FlagSet) Int64SliceP(name, shorthand string, value []int64, usage string) *[]int64 { |
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152 p := []int64{} |
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153 f.Int64SliceVarP(&p, name, shorthand, value, usage) |
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154 return &p |
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155 } |
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156 |
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157 // Int64Slice defines a []int64 flag with specified name, default value, and usage string. |
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158 // The return value is the address of a []int64 variable that stores the value of the flag. |
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159 func Int64Slice(name string, value []int64, usage string) *[]int64 { |
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160 return CommandLine.Int64SliceP(name, "", value, usage) |
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161 } |
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162 |
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163 // Int64SliceP is like Int64Slice, but accepts a shorthand letter that can be used after a single dash. |
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164 func Int64SliceP(name, shorthand string, value []int64, usage string) *[]int64 { |
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165 return CommandLine.Int64SliceP(name, shorthand, value, usage) |
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166 } |