bench-forgejo/vendor/github.com/urfave/cli/flag_bool.go

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package cli
import (
"flag"
"fmt"
"strconv"
)
// BoolFlag is a flag with type bool
type BoolFlag struct {
Name string
Usage string
EnvVar string
FilePath string
Required bool
Hidden bool
Destination *bool
}
// String returns a readable representation of this value
// (for usage defaults)
func (f BoolFlag) String() string {
return FlagStringer(f)
}
// GetName returns the name of the flag
func (f BoolFlag) GetName() string {
return f.Name
}
// IsRequired returns whether or not the flag is required
func (f BoolFlag) IsRequired() bool {
return f.Required
}
// TakesValue returns true of the flag takes a value, otherwise false
func (f BoolFlag) TakesValue() bool {
return false
}
// GetUsage returns the usage string for the flag
func (f BoolFlag) GetUsage() string {
return f.Usage
}
// GetValue returns the flags value as string representation and an empty
// string if the flag takes no value at all.
func (f BoolFlag) GetValue() string {
return ""
}
// Bool looks up the value of a local BoolFlag, returns
// false if not found
func (c *Context) Bool(name string) bool {
return lookupBool(name, c.flagSet)
}
// GlobalBool looks up the value of a global BoolFlag, returns
// false if not found
func (c *Context) GlobalBool(name string) bool {
if fs := lookupGlobalFlagSet(name, c); fs != nil {
return lookupBool(name, fs)
}
return false
}
// Apply populates the flag given the flag set and environment
// Ignores errors
func (f BoolFlag) Apply(set *flag.FlagSet) {
_ = f.ApplyWithError(set)
}
// ApplyWithError populates the flag given the flag set and environment
func (f BoolFlag) ApplyWithError(set *flag.FlagSet) error {
val := false
if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
if envVal == "" {
val = false
} else {
envValBool, err := strconv.ParseBool(envVal)
if err != nil {
return fmt.Errorf("could not parse %s as bool value for flag %s: %s", envVal, f.Name, err)
}
val = envValBool
}
}
eachName(f.Name, func(name string) {
if f.Destination != nil {
set.BoolVar(f.Destination, name, val, f.Usage)
return
}
set.Bool(name, val, f.Usage)
})
return nil
}
func lookupBool(name string, set *flag.FlagSet) bool {
f := set.Lookup(name)
if f != nil {
parsed, err := strconv.ParseBool(f.Value.String())
if err != nil {
return false
}
return parsed
}
return false
}