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package regex
import "fmt"
// Flag for regex.
type Flag int
const (
// Undefined flag set
Undefined Flag = iota
// Default is the default regex mode (positive matching)
Default Flag = iota
// Invert inverts the regex
Invert Flag = iota
// Noop means no regex matching enabled, all defaults to true
Noop Flag = iota
)
// NewFlag returns a new regex flag.
func NewFlag(str string) (Flag, error) {
switch str {
case "default":
return Default, nil
case "invert":
return Invert, nil
case "noop":
return Noop, nil
default:
return Undefined, fmt.Errorf("unknown regex flag '%s', setting to 'undefined'", str)
}
}
func (f Flag) String() string {
switch f {
case Default:
return "default"
case Invert:
return "invert"
case Noop:
return "noop"
default:
return "undefined"
}
}
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