forked from github/multus-cni
ac21a96804
gomodule is still in progress to migrate for now, hence multus team decide to keep vendor directory to support build without gomodule.
99 lines
3.3 KiB
Go
99 lines
3.3 KiB
Go
package pflag
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import (
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"fmt"
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"net"
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"strings"
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)
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// IPNet adapts net.IPNet for use as a flag.
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type ipNetValue net.IPNet
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func (ipnet ipNetValue) String() string {
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n := net.IPNet(ipnet)
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return n.String()
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}
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func (ipnet *ipNetValue) Set(value string) error {
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_, n, err := net.ParseCIDR(strings.TrimSpace(value))
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if err != nil {
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return err
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}
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*ipnet = ipNetValue(*n)
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return nil
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}
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func (*ipNetValue) Type() string {
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return "ipNet"
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}
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func newIPNetValue(val net.IPNet, p *net.IPNet) *ipNetValue {
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*p = val
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return (*ipNetValue)(p)
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}
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func ipNetConv(sval string) (interface{}, error) {
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_, n, err := net.ParseCIDR(strings.TrimSpace(sval))
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if err == nil {
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return *n, nil
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}
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return nil, fmt.Errorf("invalid string being converted to IPNet: %s", sval)
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}
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// GetIPNet return the net.IPNet value of a flag with the given name
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func (f *FlagSet) GetIPNet(name string) (net.IPNet, error) {
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val, err := f.getFlagType(name, "ipNet", ipNetConv)
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if err != nil {
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return net.IPNet{}, err
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}
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return val.(net.IPNet), nil
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}
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// IPNetVar defines an net.IPNet flag with specified name, default value, and usage string.
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// The argument p points to an net.IPNet variable in which to store the value of the flag.
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func (f *FlagSet) IPNetVar(p *net.IPNet, name string, value net.IPNet, usage string) {
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f.VarP(newIPNetValue(value, p), name, "", usage)
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}
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// IPNetVarP is like IPNetVar, but accepts a shorthand letter that can be used after a single dash.
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func (f *FlagSet) IPNetVarP(p *net.IPNet, name, shorthand string, value net.IPNet, usage string) {
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f.VarP(newIPNetValue(value, p), name, shorthand, usage)
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}
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// IPNetVar defines an net.IPNet flag with specified name, default value, and usage string.
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// The argument p points to an net.IPNet variable in which to store the value of the flag.
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func IPNetVar(p *net.IPNet, name string, value net.IPNet, usage string) {
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CommandLine.VarP(newIPNetValue(value, p), name, "", usage)
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}
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// IPNetVarP is like IPNetVar, but accepts a shorthand letter that can be used after a single dash.
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func IPNetVarP(p *net.IPNet, name, shorthand string, value net.IPNet, usage string) {
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CommandLine.VarP(newIPNetValue(value, p), name, shorthand, usage)
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}
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// IPNet defines an net.IPNet flag with specified name, default value, and usage string.
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// The return value is the address of an net.IPNet variable that stores the value of the flag.
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func (f *FlagSet) IPNet(name string, value net.IPNet, usage string) *net.IPNet {
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p := new(net.IPNet)
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f.IPNetVarP(p, name, "", value, usage)
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return p
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}
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// IPNetP is like IPNet, but accepts a shorthand letter that can be used after a single dash.
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func (f *FlagSet) IPNetP(name, shorthand string, value net.IPNet, usage string) *net.IPNet {
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p := new(net.IPNet)
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f.IPNetVarP(p, name, shorthand, value, usage)
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return p
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}
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// IPNet defines an net.IPNet flag with specified name, default value, and usage string.
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// The return value is the address of an net.IPNet variable that stores the value of the flag.
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func IPNet(name string, value net.IPNet, usage string) *net.IPNet {
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return CommandLine.IPNetP(name, "", value, usage)
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}
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// IPNetP is like IPNet, but accepts a shorthand letter that can be used after a single dash.
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func IPNetP(name, shorthand string, value net.IPNet, usage string) *net.IPNet {
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return CommandLine.IPNetP(name, shorthand, value, usage)
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}
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