1package pflag
2
3// -- stringArray Value
4type stringArrayValue struct {
5	value   *[]string
6	changed bool
7}
8
9func newStringArrayValue(val []string, p *[]string) *stringArrayValue {
10	ssv := new(stringArrayValue)
11	ssv.value = p
12	*ssv.value = val
13	return ssv
14}
15
16func (s *stringArrayValue) Set(val string) error {
17	if !s.changed {
18		*s.value = []string{val}
19		s.changed = true
20	} else {
21		*s.value = append(*s.value, val)
22	}
23	return nil
24}
25
26func (s *stringArrayValue) Type() string {
27	return "stringArray"
28}
29
30func (s *stringArrayValue) String() string {
31	str, _ := writeAsCSV(*s.value)
32	return "[" + str + "]"
33}
34
35func stringArrayConv(sval string) (interface{}, error) {
36	sval = sval[1 : len(sval)-1]
37	// An empty string would cause a array with one (empty) string
38	if len(sval) == 0 {
39		return []string{}, nil
40	}
41	return readAsCSV(sval)
42}
43
44// GetStringArray return the []string value of a flag with the given name
45func (f *FlagSet) GetStringArray(name string) ([]string, error) {
46	val, err := f.getFlagType(name, "stringArray", stringArrayConv)
47	if err != nil {
48		return []string{}, err
49	}
50	return val.([]string), nil
51}
52
53// StringArrayVar defines a string flag with specified name, default value, and usage string.
54// The argument p points to a []string variable in which to store the values of the multiple flags.
55// The value of each argument will not try to be separated by comma
56func (f *FlagSet) StringArrayVar(p *[]string, name string, value []string, usage string) {
57	f.VarP(newStringArrayValue(value, p), name, "", usage)
58}
59
60// StringArrayVarP is like StringArrayVar, but accepts a shorthand letter that can be used after a single dash.
61func (f *FlagSet) StringArrayVarP(p *[]string, name, shorthand string, value []string, usage string) {
62	f.VarP(newStringArrayValue(value, p), name, shorthand, usage)
63}
64
65// StringArrayVar defines a string flag with specified name, default value, and usage string.
66// The argument p points to a []string variable in which to store the value of the flag.
67// The value of each argument will not try to be separated by comma
68func StringArrayVar(p *[]string, name string, value []string, usage string) {
69	CommandLine.VarP(newStringArrayValue(value, p), name, "", usage)
70}
71
72// StringArrayVarP is like StringArrayVar, but accepts a shorthand letter that can be used after a single dash.
73func StringArrayVarP(p *[]string, name, shorthand string, value []string, usage string) {
74	CommandLine.VarP(newStringArrayValue(value, p), name, shorthand, usage)
75}
76
77// StringArray defines a string flag with specified name, default value, and usage string.
78// The return value is the address of a []string variable that stores the value of the flag.
79// The value of each argument will not try to be separated by comma
80func (f *FlagSet) StringArray(name string, value []string, usage string) *[]string {
81	p := []string{}
82	f.StringArrayVarP(&p, name, "", value, usage)
83	return &p
84}
85
86// StringArrayP is like StringArray, but accepts a shorthand letter that can be used after a single dash.
87func (f *FlagSet) StringArrayP(name, shorthand string, value []string, usage string) *[]string {
88	p := []string{}
89	f.StringArrayVarP(&p, name, shorthand, value, usage)
90	return &p
91}
92
93// StringArray defines a string flag with specified name, default value, and usage string.
94// The return value is the address of a []string variable that stores the value of the flag.
95// The value of each argument will not try to be separated by comma
96func StringArray(name string, value []string, usage string) *[]string {
97	return CommandLine.StringArrayP(name, "", value, usage)
98}
99
100// StringArrayP is like StringArray, but accepts a shorthand letter that can be used after a single dash.
101func StringArrayP(name, shorthand string, value []string, usage string) *[]string {
102	return CommandLine.StringArrayP(name, shorthand, value, usage)
103}
104