1package pflag
2
3import (
4	"fmt"
5	"strconv"
6)
7
8// -- uint Value
9type uintValue uint
10
11func newUintValue(val uint, p *uint) *uintValue {
12	*p = val
13	return (*uintValue)(p)
14}
15
16func (i *uintValue) Set(s string) error {
17	v, err := strconv.ParseUint(s, 0, 64)
18	*i = uintValue(v)
19	return err
20}
21
22func (i *uintValue) Type() string {
23	return "uint"
24}
25
26func (i *uintValue) String() string { return fmt.Sprintf("%v", *i) }
27
28func uintConv(sval string) (interface{}, error) {
29	v, err := strconv.ParseUint(sval, 0, 0)
30	if err != nil {
31		return 0, err
32	}
33	return uint(v), nil
34}
35
36// GetUint return the uint value of a flag with the given name
37func (f *FlagSet) GetUint(name string) (uint, error) {
38	val, err := f.getFlagType(name, "uint", uintConv)
39	if err != nil {
40		return 0, err
41	}
42	return val.(uint), nil
43}
44
45// UintVar defines a uint flag with specified name, default value, and usage string.
46// The argument p points to a uint variable in which to store the value of the flag.
47func (f *FlagSet) UintVar(p *uint, name string, value uint, usage string) {
48	f.VarP(newUintValue(value, p), name, "", usage)
49}
50
51// UintVarP is like UintVar, but accepts a shorthand letter that can be used after a single dash.
52func (f *FlagSet) UintVarP(p *uint, name, shorthand string, value uint, usage string) {
53	f.VarP(newUintValue(value, p), name, shorthand, usage)
54}
55
56// UintVar defines a uint flag with specified name, default value, and usage string.
57// The argument p points to a uint  variable in which to store the value of the flag.
58func UintVar(p *uint, name string, value uint, usage string) {
59	CommandLine.VarP(newUintValue(value, p), name, "", usage)
60}
61
62// UintVarP is like UintVar, but accepts a shorthand letter that can be used after a single dash.
63func UintVarP(p *uint, name, shorthand string, value uint, usage string) {
64	CommandLine.VarP(newUintValue(value, p), name, shorthand, usage)
65}
66
67// Uint defines a uint flag with specified name, default value, and usage string.
68// The return value is the address of a uint  variable that stores the value of the flag.
69func (f *FlagSet) Uint(name string, value uint, usage string) *uint {
70	p := new(uint)
71	f.UintVarP(p, name, "", value, usage)
72	return p
73}
74
75// UintP is like Uint, but accepts a shorthand letter that can be used after a single dash.
76func (f *FlagSet) UintP(name, shorthand string, value uint, usage string) *uint {
77	p := new(uint)
78	f.UintVarP(p, name, shorthand, value, usage)
79	return p
80}
81
82// Uint defines a uint flag with specified name, default value, and usage string.
83// The return value is the address of a uint  variable that stores the value of the flag.
84func Uint(name string, value uint, usage string) *uint {
85	return CommandLine.UintP(name, "", value, usage)
86}
87
88// UintP is like Uint, but accepts a shorthand letter that can be used after a single dash.
89func UintP(name, shorthand string, value uint, usage string) *uint {
90	return CommandLine.UintP(name, shorthand, value, usage)
91}
92