mirror of
https://github.com/opencontainers/runc.git
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lifubang
57fad01d52
Migrate from urfave/cli v1 (maintenance mode) to v3 to benefit from active development, improved features, and long-term support. Signed-off-by: lifubang <lifubang@acmcoder.com>
100 lines
2.3 KiB
Go
100 lines
2.3 KiB
Go
package cli
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import (
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"strconv"
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"unsafe"
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)
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type (
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UintFlag = FlagBase[uint, IntegerConfig, uintValue[uint]]
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Uint8Flag = FlagBase[uint8, IntegerConfig, uintValue[uint8]]
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Uint16Flag = FlagBase[uint16, IntegerConfig, uintValue[uint16]]
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Uint32Flag = FlagBase[uint32, IntegerConfig, uintValue[uint32]]
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Uint64Flag = FlagBase[uint64, IntegerConfig, uintValue[uint64]]
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)
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// -- uint Value
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type uintValue[T uint | uint8 | uint16 | uint32 | uint64] struct {
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val *T
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base int
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}
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// Below functions are to satisfy the ValueCreator interface
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func (i uintValue[T]) Create(val T, p *T, c IntegerConfig) Value {
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*p = val
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return &uintValue[T]{
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val: p,
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base: c.Base,
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}
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}
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func (i uintValue[T]) ToString(b T) string {
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i.val = &b
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return i.String()
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}
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// Below functions are to satisfy the flag.Value interface
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func (i *uintValue[T]) Set(s string) error {
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v, err := strconv.ParseUint(s, i.base, int(unsafe.Sizeof(T(0))*8))
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if err != nil {
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return err
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}
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*i.val = T(v)
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return err
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}
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func (i *uintValue[T]) Get() any { return *i.val }
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func (i *uintValue[T]) String() string {
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base := i.base
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if base == 0 {
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base = 10
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}
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return strconv.FormatUint(uint64(*i.val), base)
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}
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// Uint looks up the value of a local Uint64Flag, returns
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// 0 if not found
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func (cmd *Command) Uint(name string) uint {
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return getUint[uint](cmd, name)
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}
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// Uint8 looks up the value of a local Uint8Flag, returns
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// 0 if not found
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func (cmd *Command) Uint8(name string) uint8 {
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return getUint[uint8](cmd, name)
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}
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// Uint16 looks up the value of a local Uint16Flag, returns
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// 0 if not found
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func (cmd *Command) Uint16(name string) uint16 {
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return getUint[uint16](cmd, name)
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}
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// Uint32 looks up the value of a local Uint32Flag, returns
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// 0 if not found
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func (cmd *Command) Uint32(name string) uint32 {
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return getUint[uint32](cmd, name)
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}
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// Uint64 looks up the value of a local Uint64Flag, returns
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// 0 if not found
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func (cmd *Command) Uint64(name string) uint64 {
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return getUint[uint64](cmd, name)
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}
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func getUint[T uint | uint8 | uint16 | uint32 | uint64](cmd *Command, name string) T {
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if v, ok := cmd.Value(name).(T); ok {
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tracef("uint available for flag name %[1]q with value=%[2]v (cmd=%[3]q)", name, v, cmd.Name)
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return v
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}
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tracef("uint NOT available for flag name %[1]q (cmd=%[2]q)", name, cmd.Name)
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return 0
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}
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