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string_array.go 
129 строк · 4.3 Кб
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package pflag
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// -- stringArray Value
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type stringArrayValue struct {
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	value   *[]string
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	changed bool
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}
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func newStringArrayValue(val []string, p *[]string) *stringArrayValue {
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	ssv := new(stringArrayValue)
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	ssv.value = p
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	*ssv.value = val
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	return ssv
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}
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func (s *stringArrayValue) Set(val string) error {
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	if !s.changed {
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		*s.value = []string{val}
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		s.changed = true
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	} else {
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		*s.value = append(*s.value, val)
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	}
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	return nil
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}
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func (s *stringArrayValue) Append(val string) error {
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	*s.value = append(*s.value, val)
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	return nil
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}
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func (s *stringArrayValue) Replace(val []string) error {
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	out := make([]string, len(val))
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	for i, d := range val {
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		var err error
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		out[i] = d
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		if err != nil {
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			return err
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		}
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	}
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	*s.value = out
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	return nil
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}
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func (s *stringArrayValue) GetSlice() []string {
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	out := make([]string, len(*s.value))
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	for i, d := range *s.value {
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		out[i] = d
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	}
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	return out
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}
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func (s *stringArrayValue) Type() string {
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	return "stringArray"
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}
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func (s *stringArrayValue) String() string {
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	str, _ := writeAsCSV(*s.value)
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	return "[" + str + "]"
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}
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func stringArrayConv(sval string) (interface{}, error) {
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	sval = sval[1 : len(sval)-1]
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	// An empty string would cause a array with one (empty) string
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	if len(sval) == 0 {
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		return []string{}, nil
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	}
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	return readAsCSV(sval)
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}
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// GetStringArray return the []string value of a flag with the given name
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func (f *FlagSet) GetStringArray(name string) ([]string, error) {
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	val, err := f.getFlagType(name, "stringArray", stringArrayConv)
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	if err != nil {
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		return []string{}, err
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	}
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	return val.([]string), nil
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}
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// StringArrayVar defines a string flag with specified name, default value, and usage string.
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// The argument p points to a []string variable in which to store the values of the multiple flags.
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// The value of each argument will not try to be separated by comma. Use a StringSlice for that.
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func (f *FlagSet) StringArrayVar(p *[]string, name string, value []string, usage string) {
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	f.VarP(newStringArrayValue(value, p), name, "", usage)
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}
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// StringArrayVarP is like StringArrayVar, but accepts a shorthand letter that can be used after a single dash.
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func (f *FlagSet) StringArrayVarP(p *[]string, name, shorthand string, value []string, usage string) {
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	f.VarP(newStringArrayValue(value, p), name, shorthand, usage)
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}
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// StringArrayVar defines a string flag with specified name, default value, and usage string.
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// The argument p points to a []string variable in which to store the value of the flag.
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// The value of each argument will not try to be separated by comma. Use a StringSlice for that.
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func StringArrayVar(p *[]string, name string, value []string, usage string) {
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	CommandLine.VarP(newStringArrayValue(value, p), name, "", usage)
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}
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// StringArrayVarP is like StringArrayVar, but accepts a shorthand letter that can be used after a single dash.
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func StringArrayVarP(p *[]string, name, shorthand string, value []string, usage string) {
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	CommandLine.VarP(newStringArrayValue(value, p), name, shorthand, usage)
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}
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// StringArray defines a string flag with specified name, default value, and usage string.
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// The return value is the address of a []string variable that stores the value of the flag.
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// The value of each argument will not try to be separated by comma. Use a StringSlice for that.
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func (f *FlagSet) StringArray(name string, value []string, usage string) *[]string {
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	p := []string{}
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	f.StringArrayVarP(&p, name, "", value, usage)
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	return &p
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}
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// StringArrayP is like StringArray, but accepts a shorthand letter that can be used after a single dash.
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func (f *FlagSet) StringArrayP(name, shorthand string, value []string, usage string) *[]string {
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	p := []string{}
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	f.StringArrayVarP(&p, name, shorthand, value, usage)
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	return &p
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}
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// StringArray defines a string flag with specified name, default value, and usage string.
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// The return value is the address of a []string variable that stores the value of the flag.
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// The value of each argument will not try to be separated by comma. Use a StringSlice for that.
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func StringArray(name string, value []string, usage string) *[]string {
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	return CommandLine.StringArrayP(name, "", value, usage)
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}
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// StringArrayP is like StringArray, but accepts a shorthand letter that can be used after a single dash.
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func StringArrayP(name, shorthand string, value []string, usage string) *[]string {
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	return CommandLine.StringArrayP(name, shorthand, value, usage)
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}
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