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flag_generic.go

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package cli

type GenericFlag = FlagBase[Value, NoConfig, genericValue]

// -- Value Value

type genericValue struct {

val Value

}

// Below functions are to satisfy the ValueCreator interface

func (f genericValue) Create(val Value, p *Value, c NoConfig) Value {

*p = val

return &genericValue{

val: *p,

}

}

func (f genericValue) ToString(b Value) string {

f.val = b

return f.String()

}

// Below functions are to satisfy the flag.Value interface

func (f *genericValue) Set(s string) error {

if f.val != nil {

return f.val.Set(s)

}

return nil

}

func (f *genericValue) Get() any {

if f.val != nil {

return f.val.Get()

}

return nil

}

func (f *genericValue) String() string {

if f.val != nil {

return f.val.String()

}

return ""

}

func (f *genericValue) IsBoolFlag() bool {

if f.val == nil {

return false

}

bf, ok := f.val.(boolFlag)

return ok && bf.IsBoolFlag()

}

// Generic looks up the value of a local GenericFlag, returns

// nil if not found

func (cmd *Command) Generic(name string) Value {

if v, ok := cmd.Value(name).(Value); ok {

tracef("generic available for flag name %[1]q with value=%[2]v (cmd=%[3]q)", name, v, cmd.Name)

return v

}

tracef("generic NOT available for flag name %[1]q (cmd=%[2]q)", name, cmd.Name)

return nil

}