Matteo Scandolo | a428586 | 2020-12-01 18:10:10 -0800 | [diff] [blame^] | 1 | package pflag |
| 2 | |
| 3 | import ( |
| 4 | "fmt" |
| 5 | "strconv" |
| 6 | "strings" |
| 7 | ) |
| 8 | |
| 9 | // -- intSlice Value |
| 10 | type intSliceValue struct { |
| 11 | value *[]int |
| 12 | changed bool |
| 13 | } |
| 14 | |
| 15 | func newIntSliceValue(val []int, p *[]int) *intSliceValue { |
| 16 | isv := new(intSliceValue) |
| 17 | isv.value = p |
| 18 | *isv.value = val |
| 19 | return isv |
| 20 | } |
| 21 | |
| 22 | func (s *intSliceValue) Set(val string) error { |
| 23 | ss := strings.Split(val, ",") |
| 24 | out := make([]int, len(ss)) |
| 25 | for i, d := range ss { |
| 26 | var err error |
| 27 | out[i], err = strconv.Atoi(d) |
| 28 | if err != nil { |
| 29 | return err |
| 30 | } |
| 31 | |
| 32 | } |
| 33 | if !s.changed { |
| 34 | *s.value = out |
| 35 | } else { |
| 36 | *s.value = append(*s.value, out...) |
| 37 | } |
| 38 | s.changed = true |
| 39 | return nil |
| 40 | } |
| 41 | |
| 42 | func (s *intSliceValue) Type() string { |
| 43 | return "intSlice" |
| 44 | } |
| 45 | |
| 46 | func (s *intSliceValue) String() string { |
| 47 | out := make([]string, len(*s.value)) |
| 48 | for i, d := range *s.value { |
| 49 | out[i] = fmt.Sprintf("%d", d) |
| 50 | } |
| 51 | return "[" + strings.Join(out, ",") + "]" |
| 52 | } |
| 53 | |
| 54 | func (s *intSliceValue) Append(val string) error { |
| 55 | i, err := strconv.Atoi(val) |
| 56 | if err != nil { |
| 57 | return err |
| 58 | } |
| 59 | *s.value = append(*s.value, i) |
| 60 | return nil |
| 61 | } |
| 62 | |
| 63 | func (s *intSliceValue) Replace(val []string) error { |
| 64 | out := make([]int, len(val)) |
| 65 | for i, d := range val { |
| 66 | var err error |
| 67 | out[i], err = strconv.Atoi(d) |
| 68 | if err != nil { |
| 69 | return err |
| 70 | } |
| 71 | } |
| 72 | *s.value = out |
| 73 | return nil |
| 74 | } |
| 75 | |
| 76 | func (s *intSliceValue) GetSlice() []string { |
| 77 | out := make([]string, len(*s.value)) |
| 78 | for i, d := range *s.value { |
| 79 | out[i] = strconv.Itoa(d) |
| 80 | } |
| 81 | return out |
| 82 | } |
| 83 | |
| 84 | func intSliceConv(val string) (interface{}, error) { |
| 85 | val = strings.Trim(val, "[]") |
| 86 | // Empty string would cause a slice with one (empty) entry |
| 87 | if len(val) == 0 { |
| 88 | return []int{}, nil |
| 89 | } |
| 90 | ss := strings.Split(val, ",") |
| 91 | out := make([]int, len(ss)) |
| 92 | for i, d := range ss { |
| 93 | var err error |
| 94 | out[i], err = strconv.Atoi(d) |
| 95 | if err != nil { |
| 96 | return nil, err |
| 97 | } |
| 98 | |
| 99 | } |
| 100 | return out, nil |
| 101 | } |
| 102 | |
| 103 | // GetIntSlice return the []int value of a flag with the given name |
| 104 | func (f *FlagSet) GetIntSlice(name string) ([]int, error) { |
| 105 | val, err := f.getFlagType(name, "intSlice", intSliceConv) |
| 106 | if err != nil { |
| 107 | return []int{}, err |
| 108 | } |
| 109 | return val.([]int), nil |
| 110 | } |
| 111 | |
| 112 | // IntSliceVar defines a intSlice flag with specified name, default value, and usage string. |
| 113 | // The argument p points to a []int variable in which to store the value of the flag. |
| 114 | func (f *FlagSet) IntSliceVar(p *[]int, name string, value []int, usage string) { |
| 115 | f.VarP(newIntSliceValue(value, p), name, "", usage) |
| 116 | } |
| 117 | |
| 118 | // IntSliceVarP is like IntSliceVar, but accepts a shorthand letter that can be used after a single dash. |
| 119 | func (f *FlagSet) IntSliceVarP(p *[]int, name, shorthand string, value []int, usage string) { |
| 120 | f.VarP(newIntSliceValue(value, p), name, shorthand, usage) |
| 121 | } |
| 122 | |
| 123 | // IntSliceVar defines a int[] flag with specified name, default value, and usage string. |
| 124 | // The argument p points to a int[] variable in which to store the value of the flag. |
| 125 | func IntSliceVar(p *[]int, name string, value []int, usage string) { |
| 126 | CommandLine.VarP(newIntSliceValue(value, p), name, "", usage) |
| 127 | } |
| 128 | |
| 129 | // IntSliceVarP is like IntSliceVar, but accepts a shorthand letter that can be used after a single dash. |
| 130 | func IntSliceVarP(p *[]int, name, shorthand string, value []int, usage string) { |
| 131 | CommandLine.VarP(newIntSliceValue(value, p), name, shorthand, usage) |
| 132 | } |
| 133 | |
| 134 | // IntSlice defines a []int flag with specified name, default value, and usage string. |
| 135 | // The return value is the address of a []int variable that stores the value of the flag. |
| 136 | func (f *FlagSet) IntSlice(name string, value []int, usage string) *[]int { |
| 137 | p := []int{} |
| 138 | f.IntSliceVarP(&p, name, "", value, usage) |
| 139 | return &p |
| 140 | } |
| 141 | |
| 142 | // IntSliceP is like IntSlice, but accepts a shorthand letter that can be used after a single dash. |
| 143 | func (f *FlagSet) IntSliceP(name, shorthand string, value []int, usage string) *[]int { |
| 144 | p := []int{} |
| 145 | f.IntSliceVarP(&p, name, shorthand, value, usage) |
| 146 | return &p |
| 147 | } |
| 148 | |
| 149 | // IntSlice defines a []int flag with specified name, default value, and usage string. |
| 150 | // The return value is the address of a []int variable that stores the value of the flag. |
| 151 | func IntSlice(name string, value []int, usage string) *[]int { |
| 152 | return CommandLine.IntSliceP(name, "", value, usage) |
| 153 | } |
| 154 | |
| 155 | // IntSliceP is like IntSlice, but accepts a shorthand letter that can be used after a single dash. |
| 156 | func IntSliceP(name, shorthand string, value []int, usage string) *[]int { |
| 157 | return CommandLine.IntSliceP(name, shorthand, value, usage) |
| 158 | } |