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Copy pathflag_uint.go
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Copy pathflag_uint.go
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103 lines (82 loc) · 2.33 KB
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package cli
import (
"strconv"
"unsafe"
)
type (
UintFlag = FlagBase[uint, IntegerConfig, uintValue[uint]]
Uint8Flag = FlagBase[uint8, IntegerConfig, uintValue[uint8]]
Uint16Flag = FlagBase[uint16, IntegerConfig, uintValue[uint16]]
Uint32Flag = FlagBase[uint32, IntegerConfig, uintValue[uint32]]
Uint64Flag = FlagBase[uint64, IntegerConfig, uintValue[uint64]]
)
// -- uint Value
type uintValue[T uint | uint8 | uint16 | uint32 | uint64] struct {
val *T
base int
}
// Below functions are to satisfy the ValueCreator interface
func (i uintValue[T]) Create(val T, p *T, c IntegerConfig) Value {
*p = val
return &uintValue[T]{
val: p,
base: c.Base,
}
}
func (i uintValue[T]) ToString(b T) string {
base := i.base
if base == 0 {
base = 10
}
return strconv.FormatUint(uint64(b), base)
}
// Below functions are to satisfy the flag.Value interface
func (i *uintValue[T]) Set(s string) error {
v, err := strconv.ParseUint(s, i.base, int(unsafe.Sizeof(T(0))*8))
if err != nil {
return err
}
*i.val = T(v)
return err
}
func (i *uintValue[T]) Get() any { return *i.val }
func (i *uintValue[T]) String() string {
base := i.base
if base == 0 {
base = 10
}
return strconv.FormatUint(uint64(*i.val), base)
}
// Uint looks up the value of a local Uint64Flag, returns
// 0 if not found
func (cmd *Command) Uint(name string) uint {
return getUint[uint](cmd, name)
}
// Uint8 looks up the value of a local Uint8Flag, returns
// 0 if not found
func (cmd *Command) Uint8(name string) uint8 {
return getUint[uint8](cmd, name)
}
// Uint16 looks up the value of a local Uint16Flag, returns
// 0 if not found
func (cmd *Command) Uint16(name string) uint16 {
return getUint[uint16](cmd, name)
}
// Uint32 looks up the value of a local Uint32Flag, returns
// 0 if not found
func (cmd *Command) Uint32(name string) uint32 {
return getUint[uint32](cmd, name)
}
// Uint64 looks up the value of a local Uint64Flag, returns
// 0 if not found
func (cmd *Command) Uint64(name string) uint64 {
return getUint[uint64](cmd, name)
}
func getUint[T uint | uint8 | uint16 | uint32 | uint64](cmd *Command, name string) T {
if v, ok := cmd.Value(name).(T); ok {
tracef("uint available for flag name %[1]q with value=%[2]v (cmd=%[3]q)", name, v, cmd.Name)
return v
}
tracef("uint NOT available for flag name %[1]q (cmd=%[2]q)", name, cmd.Name)
return 0
}