Serge Bazanski | 31dd616 | 2018-10-25 14:20:50 +0200 | [diff] [blame] | 1 | package pflag |
| 2 | |
| 3 | // -- string Value |
| 4 | type stringValue string |
| 5 | |
| 6 | func newStringValue(val string, p *string) *stringValue { |
| 7 | *p = val |
| 8 | return (*stringValue)(p) |
| 9 | } |
| 10 | |
| 11 | func (s *stringValue) Set(val string) error { |
| 12 | *s = stringValue(val) |
| 13 | return nil |
| 14 | } |
| 15 | func (s *stringValue) Type() string { |
| 16 | return "string" |
| 17 | } |
| 18 | |
| 19 | func (s *stringValue) String() string { return string(*s) } |
| 20 | |
| 21 | func stringConv(sval string) (interface{}, error) { |
| 22 | return sval, nil |
| 23 | } |
| 24 | |
| 25 | // GetString return the string value of a flag with the given name |
| 26 | func (f *FlagSet) GetString(name string) (string, error) { |
| 27 | val, err := f.getFlagType(name, "string", stringConv) |
| 28 | if err != nil { |
| 29 | return "", err |
| 30 | } |
| 31 | return val.(string), nil |
| 32 | } |
| 33 | |
| 34 | // StringVar defines a string flag with specified name, default value, and usage string. |
| 35 | // The argument p points to a string variable in which to store the value of the flag. |
| 36 | func (f *FlagSet) StringVar(p *string, name string, value string, usage string) { |
| 37 | f.VarP(newStringValue(value, p), name, "", usage) |
| 38 | } |
| 39 | |
| 40 | // StringVarP is like StringVar, but accepts a shorthand letter that can be used after a single dash. |
| 41 | func (f *FlagSet) StringVarP(p *string, name, shorthand string, value string, usage string) { |
| 42 | f.VarP(newStringValue(value, p), name, shorthand, usage) |
| 43 | } |
| 44 | |
| 45 | // StringVar defines a string flag with specified name, default value, and usage string. |
| 46 | // The argument p points to a string variable in which to store the value of the flag. |
| 47 | func StringVar(p *string, name string, value string, usage string) { |
| 48 | CommandLine.VarP(newStringValue(value, p), name, "", usage) |
| 49 | } |
| 50 | |
| 51 | // StringVarP is like StringVar, but accepts a shorthand letter that can be used after a single dash. |
| 52 | func StringVarP(p *string, name, shorthand string, value string, usage string) { |
| 53 | CommandLine.VarP(newStringValue(value, p), name, shorthand, usage) |
| 54 | } |
| 55 | |
| 56 | // String defines a string flag with specified name, default value, and usage string. |
| 57 | // The return value is the address of a string variable that stores the value of the flag. |
| 58 | func (f *FlagSet) String(name string, value string, usage string) *string { |
| 59 | p := new(string) |
| 60 | f.StringVarP(p, name, "", value, usage) |
| 61 | return p |
| 62 | } |
| 63 | |
| 64 | // StringP is like String, but accepts a shorthand letter that can be used after a single dash. |
| 65 | func (f *FlagSet) StringP(name, shorthand string, value string, usage string) *string { |
| 66 | p := new(string) |
| 67 | f.StringVarP(p, name, shorthand, value, usage) |
| 68 | return p |
| 69 | } |
| 70 | |
| 71 | // String defines a string flag with specified name, default value, and usage string. |
| 72 | // The return value is the address of a string variable that stores the value of the flag. |
| 73 | func String(name string, value string, usage string) *string { |
| 74 | return CommandLine.StringP(name, "", value, usage) |
| 75 | } |
| 76 | |
| 77 | // StringP is like String, but accepts a shorthand letter that can be used after a single dash. |
| 78 | func StringP(name, shorthand string, value string, usage string) *string { |
| 79 | return CommandLine.StringP(name, shorthand, value, usage) |
| 80 | } |