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uint16_slice.go
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uint16_slice.go
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// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package zflag
import (
"fmt"
"strconv"
"strings"
)
// -- uint16Slice Value
type uint16SliceValue struct {
value *[]uint16
changed bool
}
var _ Value = (*uint16SliceValue)(nil)
var _ Getter = (*uint16SliceValue)(nil)
var _ SliceValue = (*uint16SliceValue)(nil)
var _ Typed = (*uint16SliceValue)(nil)
func newUint16SliceValue(val []uint16, p *[]uint16) *uint16SliceValue {
isv := new(uint16SliceValue)
isv.value = p
*isv.value = val
return isv
}
func (s *uint16SliceValue) Get() interface{} {
return *s.value
}
func (s *uint16SliceValue) Set(val string) error {
val = strings.TrimSpace(val)
temp64, err := strconv.ParseUint(val, 0, 16)
if err != nil {
return err
}
if !s.changed {
*s.value = []uint16{}
}
*s.value = append(*s.value, uint16(temp64))
s.changed = true
return nil
}
func (s *uint16SliceValue) Type() string {
return "uint16Slice"
}
func (s *uint16SliceValue) String() string {
if s.value == nil {
return "[]"
}
return fmt.Sprintf("%d", *s.value)
}
func (s *uint16SliceValue) fromString(val string) (uint16, error) {
t64, err := strconv.ParseUint(val, 0, 16)
if err != nil {
return 0, err
}
return uint16(t64), nil
}
func (s *uint16SliceValue) toString(val uint16) string {
return fmt.Sprintf("%d", val)
}
func (s *uint16SliceValue) Append(val string) error {
i, err := s.fromString(val)
if err != nil {
return err
}
*s.value = append(*s.value, i)
return nil
}
func (s *uint16SliceValue) Replace(val []string) error {
out := make([]uint16, len(val))
for i, d := range val {
var err error
out[i], err = s.fromString(d)
if err != nil {
return err
}
}
*s.value = out
return nil
}
func (s *uint16SliceValue) GetSlice() []string {
out := make([]string, len(*s.value))
for i, d := range *s.value {
out[i] = s.toString(d)
}
return out
}
// GetUint16Slice return the []uint16 value of a flag with the given name
func (fs *FlagSet) GetUint16Slice(name string) ([]uint16, error) {
val, err := fs.getFlagValue(name, "uint16Slice")
if err != nil {
return []uint16{}, err
}
return val.([]uint16), nil
}
// MustGetUint16Slice is like GetUint16Slice, but panics on error.
func (fs *FlagSet) MustGetUint16Slice(name string) []uint16 {
val, err := fs.GetUint16Slice(name)
if err != nil {
panic(err)
}
return val
}
// Uint16SliceVar defines a []uint16 flag with specified name, default value, and usage string.
// The argument p points to a []uint16 variable in which to store the value of the flag.
func (fs *FlagSet) Uint16SliceVar(p *[]uint16, name string, value []uint16, usage string, opts ...Opt) {
fs.Var(newUint16SliceValue(value, p), name, usage, opts...)
}
// Uint16SliceVar defines a []uint16 flag with specified name, default value, and usage string.
// The argument p points to a []uint16 variable in which to store the value of the flag.
func Uint16SliceVar(p *[]uint16, name string, value []uint16, usage string, opts ...Opt) {
CommandLine.Uint16SliceVar(p, name, value, usage, opts...)
}
// Uint16Slice defines a []uint16 flag with specified name, default value, and usage string.
// The return value is the address of a []uint16 variable that stores the value of the flag.
func (fs *FlagSet) Uint16Slice(name string, value []uint16, usage string, opts ...Opt) *[]uint16 {
var p []uint16
fs.Uint16SliceVar(&p, name, value, usage, opts...)
return &p
}
// Uint16Slice defines a []uint16 flag with specified name, default value, and usage string.
// The return value is the address of a []uint16 variable that stores the value of the flag.
func Uint16Slice(name string, value []uint16, usage string, opts ...Opt) *[]uint16 {
return CommandLine.Uint16Slice(name, value, usage, opts...)
}