87 lines
3 KiB
Go
87 lines
3 KiB
Go
|
package pflag
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"net"
|
||
|
|
)
|
||
|
|
|
||
|
|
// -- net.IPMask value
|
||
|
|
type ipMaskValue net.IPMask
|
||
|
|
|
||
|
|
func newIPMaskValue(val net.IPMask, p *net.IPMask) *ipMaskValue {
|
||
|
|
*p = val
|
||
|
|
return (*ipMaskValue)(p)
|
||
|
|
}
|
||
|
|
|
||
|
|
func (i *ipMaskValue) String() string { return net.IPMask(*i).String() }
|
||
|
|
func (i *ipMaskValue) Set(s string) error {
|
||
|
|
ip := ParseIPv4Mask(s)
|
||
|
|
if ip == nil {
|
||
|
|
return fmt.Errorf("failed to parse IP mask: %q", s)
|
||
|
|
}
|
||
|
|
*i = ipMaskValue(ip)
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func (i *ipMaskValue) Type() string {
|
||
|
|
return "ipMask"
|
||
|
|
}
|
||
|
|
|
||
|
|
// Parse IPv4 netmask written in IP form (e.g. 255.255.255.0).
|
||
|
|
// This function should really belong to the net package.
|
||
|
|
func ParseIPv4Mask(s string) net.IPMask {
|
||
|
|
mask := net.ParseIP(s)
|
||
|
|
if mask == nil {
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
return net.IPv4Mask(mask[12], mask[13], mask[14], mask[15])
|
||
|
|
}
|
||
|
|
|
||
|
|
// IPMaskVar defines an net.IPMask flag with specified name, default value, and usage string.
|
||
|
|
// The argument p points to an net.IPMask variable in which to store the value of the flag.
|
||
|
|
func (f *FlagSet) IPMaskVar(p *net.IPMask, name string, value net.IPMask, usage string) {
|
||
|
|
f.VarP(newIPMaskValue(value, p), name, "", usage)
|
||
|
|
}
|
||
|
|
|
||
|
|
// Like IPMaskVar, but accepts a shorthand letter that can be used after a single dash.
|
||
|
|
func (f *FlagSet) IPMaskVarP(p *net.IPMask, name, shorthand string, value net.IPMask, usage string) {
|
||
|
|
f.VarP(newIPMaskValue(value, p), name, shorthand, usage)
|
||
|
|
}
|
||
|
|
|
||
|
|
// IPMaskVar defines an net.IPMask flag with specified name, default value, and usage string.
|
||
|
|
// The argument p points to an net.IPMask variable in which to store the value of the flag.
|
||
|
|
func IPMaskVar(p *net.IPMask, name string, value net.IPMask, usage string) {
|
||
|
|
CommandLine.VarP(newIPMaskValue(value, p), name, "", usage)
|
||
|
|
}
|
||
|
|
|
||
|
|
// Like IPMaskVar, but accepts a shorthand letter that can be used after a single dash.
|
||
|
|
func IPMaskVarP(p *net.IPMask, name, shorthand string, value net.IPMask, usage string) {
|
||
|
|
CommandLine.VarP(newIPMaskValue(value, p), name, shorthand, usage)
|
||
|
|
}
|
||
|
|
|
||
|
|
// IPMask defines an net.IPMask flag with specified name, default value, and usage string.
|
||
|
|
// The return value is the address of an net.IPMask variable that stores the value of the flag.
|
||
|
|
func (f *FlagSet) IPMask(name string, value net.IPMask, usage string) *net.IPMask {
|
||
|
|
p := new(net.IPMask)
|
||
|
|
f.IPMaskVarP(p, name, "", value, usage)
|
||
|
|
return p
|
||
|
|
}
|
||
|
|
|
||
|
|
// Like IPMask, but accepts a shorthand letter that can be used after a single dash.
|
||
|
|
func (f *FlagSet) IPMaskP(name, shorthand string, value net.IPMask, usage string) *net.IPMask {
|
||
|
|
p := new(net.IPMask)
|
||
|
|
f.IPMaskVarP(p, name, shorthand, value, usage)
|
||
|
|
return p
|
||
|
|
}
|
||
|
|
|
||
|
|
// IPMask defines an net.IPMask flag with specified name, default value, and usage string.
|
||
|
|
// The return value is the address of an net.IPMask variable that stores the value of the flag.
|
||
|
|
func IPMask(name string, value net.IPMask, usage string) *net.IPMask {
|
||
|
|
return CommandLine.IPMaskP(name, "", value, usage)
|
||
|
|
}
|
||
|
|
|
||
|
|
// Like IP, but accepts a shorthand letter that can be used after a single dash.
|
||
|
|
func IPMaskP(name, shorthand string, value net.IPMask, usage string) *net.IPMask {
|
||
|
|
return CommandLine.IPMaskP(name, shorthand, value, usage)
|
||
|
|
}
|