106 lines
2.3 KiB
Go
106 lines
2.3 KiB
Go
package cli
|
|
|
|
import (
|
|
"flag"
|
|
"fmt"
|
|
"strconv"
|
|
)
|
|
|
|
// UintFlag is a flag with type uint
|
|
type UintFlag struct {
|
|
Name string
|
|
Aliases []string
|
|
Usage string
|
|
EnvVars []string
|
|
FilePath string
|
|
Required bool
|
|
Hidden bool
|
|
Value uint
|
|
DefaultText string
|
|
Destination *uint
|
|
HasBeenSet bool
|
|
}
|
|
|
|
// IsSet returns whether or not the flag has been set through env or file
|
|
func (f *UintFlag) IsSet() bool {
|
|
return f.HasBeenSet
|
|
}
|
|
|
|
// String returns a readable representation of this value
|
|
// (for usage defaults)
|
|
func (f *UintFlag) String() string {
|
|
return FlagStringer(f)
|
|
}
|
|
|
|
// Names returns the names of the flag
|
|
func (f *UintFlag) Names() []string {
|
|
return flagNames(f.Name, f.Aliases)
|
|
}
|
|
|
|
// IsRequired returns whether or not the flag is required
|
|
func (f *UintFlag) IsRequired() bool {
|
|
return f.Required
|
|
}
|
|
|
|
// TakesValue returns true of the flag takes a value, otherwise false
|
|
func (f *UintFlag) TakesValue() bool {
|
|
return true
|
|
}
|
|
|
|
// GetUsage returns the usage string for the flag
|
|
func (f *UintFlag) GetUsage() string {
|
|
return f.Usage
|
|
}
|
|
|
|
// Apply populates the flag given the flag set and environment
|
|
func (f *UintFlag) Apply(set *flag.FlagSet) error {
|
|
if val, ok := flagFromEnvOrFile(f.EnvVars, f.FilePath); ok {
|
|
if val != "" {
|
|
valInt, err := strconv.ParseUint(val, 0, 64)
|
|
if err != nil {
|
|
return fmt.Errorf("could not parse %q as uint value for flag %s: %s", val, f.Name, err)
|
|
}
|
|
|
|
f.Value = uint(valInt)
|
|
f.HasBeenSet = true
|
|
}
|
|
}
|
|
|
|
for _, name := range f.Names() {
|
|
if f.Destination != nil {
|
|
set.UintVar(f.Destination, name, f.Value, f.Usage)
|
|
continue
|
|
}
|
|
set.Uint(name, f.Value, f.Usage)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// GetValue returns the flags value as string representation and an empty
|
|
// string if the flag takes no value at all.
|
|
func (f *UintFlag) GetValue() string {
|
|
return fmt.Sprintf("%d", f.Value)
|
|
}
|
|
|
|
// Uint looks up the value of a local UintFlag, returns
|
|
// 0 if not found
|
|
func (c *Context) Uint(name string) uint {
|
|
if fs := lookupFlagSet(name, c); fs != nil {
|
|
return lookupUint(name, fs)
|
|
}
|
|
return 0
|
|
}
|
|
|
|
func lookupUint(name string, set *flag.FlagSet) uint {
|
|
f := set.Lookup(name)
|
|
if f != nil {
|
|
parsed, err := strconv.ParseUint(f.Value.String(), 0, 64)
|
|
if err != nil {
|
|
return 0
|
|
}
|
|
return uint(parsed)
|
|
}
|
|
return 0
|
|
}
|