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Scott Bakere7144bc2019-10-01 14:16:47 -07001package pflag
2
3import (
4 "fmt"
5 "net"
6 "strings"
7)
8
9// -- net.IP value
10type ipValue net.IP
11
12func newIPValue(val net.IP, p *net.IP) *ipValue {
13 *p = val
14 return (*ipValue)(p)
15}
16
17func (i *ipValue) String() string { return net.IP(*i).String() }
18func (i *ipValue) Set(s string) error {
19 ip := net.ParseIP(strings.TrimSpace(s))
20 if ip == nil {
21 return fmt.Errorf("failed to parse IP: %q", s)
22 }
23 *i = ipValue(ip)
24 return nil
25}
26
27func (i *ipValue) Type() string {
28 return "ip"
29}
30
31func ipConv(sval string) (interface{}, error) {
32 ip := net.ParseIP(sval)
33 if ip != nil {
34 return ip, nil
35 }
36 return nil, fmt.Errorf("invalid string being converted to IP address: %s", sval)
37}
38
39// GetIP return the net.IP value of a flag with the given name
40func (f *FlagSet) GetIP(name string) (net.IP, error) {
41 val, err := f.getFlagType(name, "ip", ipConv)
42 if err != nil {
43 return nil, err
44 }
45 return val.(net.IP), nil
46}
47
48// IPVar defines an net.IP flag with specified name, default value, and usage string.
49// The argument p points to an net.IP variable in which to store the value of the flag.
50func (f *FlagSet) IPVar(p *net.IP, name string, value net.IP, usage string) {
51 f.VarP(newIPValue(value, p), name, "", usage)
52}
53
54// IPVarP is like IPVar, but accepts a shorthand letter that can be used after a single dash.
55func (f *FlagSet) IPVarP(p *net.IP, name, shorthand string, value net.IP, usage string) {
56 f.VarP(newIPValue(value, p), name, shorthand, usage)
57}
58
59// IPVar defines an net.IP flag with specified name, default value, and usage string.
60// The argument p points to an net.IP variable in which to store the value of the flag.
61func IPVar(p *net.IP, name string, value net.IP, usage string) {
62 CommandLine.VarP(newIPValue(value, p), name, "", usage)
63}
64
65// IPVarP is like IPVar, but accepts a shorthand letter that can be used after a single dash.
66func IPVarP(p *net.IP, name, shorthand string, value net.IP, usage string) {
67 CommandLine.VarP(newIPValue(value, p), name, shorthand, usage)
68}
69
70// IP defines an net.IP flag with specified name, default value, and usage string.
71// The return value is the address of an net.IP variable that stores the value of the flag.
72func (f *FlagSet) IP(name string, value net.IP, usage string) *net.IP {
73 p := new(net.IP)
74 f.IPVarP(p, name, "", value, usage)
75 return p
76}
77
78// IPP is like IP, but accepts a shorthand letter that can be used after a single dash.
79func (f *FlagSet) IPP(name, shorthand string, value net.IP, usage string) *net.IP {
80 p := new(net.IP)
81 f.IPVarP(p, name, shorthand, value, usage)
82 return p
83}
84
85// IP defines an net.IP flag with specified name, default value, and usage string.
86// The return value is the address of an net.IP variable that stores the value of the flag.
87func IP(name string, value net.IP, usage string) *net.IP {
88 return CommandLine.IPP(name, "", value, usage)
89}
90
91// IPP is like IP, but accepts a shorthand letter that can be used after a single dash.
92func IPP(name, shorthand string, value net.IP, usage string) *net.IP {
93 return CommandLine.IPP(name, shorthand, value, usage)
94}