update cli

[bytom/shuttle.git] / vendor / github.com / spf13 / pflag / ipmask.go

diff --git a/vendor/github.com/spf13/pflag/ipmask.go b/vendor/github.com/spf13/pflag/ipmask.go
new file mode 100644 (file)
index 0000000..5bd44bd
--- /dev/null
+++ b/vendor/github.com/spf13/pflag/ipmask.go
@@ -0,0 +1,122 @@
+package pflag
+
+import (
+       "fmt"
+       "net"
+       "strconv"
+)
+
+// -- 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"
+}
+
+// ParseIPv4Mask 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 {
+               if len(s) != 8 {
+                       return nil
+               }
+               // net.IPMask.String() actually outputs things like ffffff00
+               // so write a horrible parser for that as well  :-(
+               m := []int{}
+               for i := 0; i < 4; i++ {
+                       b := "0x" + s[2*i:2*i+2]
+                       d, err := strconv.ParseInt(b, 0, 0)
+                       if err != nil {
+                               return nil
+                       }
+                       m = append(m, int(d))
+               }
+               s := fmt.Sprintf("%d.%d.%d.%d", m[0], m[1], m[2], m[3])
+               mask = net.ParseIP(s)
+               if mask == nil {
+                       return nil
+               }
+       }
+       return net.IPv4Mask(mask[12], mask[13], mask[14], mask[15])
+}
+
+func parseIPv4Mask(sval string) (interface{}, error) {
+       mask := ParseIPv4Mask(sval)
+       if mask == nil {
+               return nil, fmt.Errorf("unable to parse %s as net.IPMask", sval)
+       }
+       return mask, nil
+}
+
+// GetIPv4Mask return the net.IPv4Mask value of a flag with the given name
+func (f *FlagSet) GetIPv4Mask(name string) (net.IPMask, error) {
+       val, err := f.getFlagType(name, "ipMask", parseIPv4Mask)
+       if err != nil {
+               return nil, err
+       }
+       return val.(net.IPMask), nil
+}
+
+// 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)
+}
+
+// IPMaskVarP is 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)
+}
+
+// IPMaskVarP is 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
+}
+
+// IPMaskP is 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)
+}
+
+// IPMaskP is 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)
+}