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package cli
import (
"flag"
"fmt"
"strconv"
)
// TakesValue returns true of the flag takes a value, otherwise false
func (f *Int64Flag) TakesValue() bool {
return true
}
// GetUsage returns the usage string for the flag
func (f *Int64Flag) GetUsage() string {
return f.Usage
}
// GetCategory returns the category for the flag
func (f *Int64Flag) GetCategory() string {
return f.Category
}
// GetValue returns the flags value as string representation and an empty
// string if the flag takes no value at all.
func (f *Int64Flag) GetValue() string {
return fmt.Sprintf("%d", f.Value)
}
// GetDefaultText returns the default text for this flag
func (f *Int64Flag) GetDefaultText() string {
if f.DefaultText != "" {
return f.DefaultText
}
return fmt.Sprintf("%d", f.defaultValue)
}
// GetEnvVars returns the env vars for this flag
func (f *Int64Flag) GetEnvVars() []string {
return f.EnvVars
}
// Apply populates the flag given the flag set and environment
func (f *Int64Flag) Apply(set *flag.FlagSet) error {
// set default value so that environment wont be able to overwrite it
f.defaultValue = f.Value
if val, source, found := flagFromEnvOrFile(f.EnvVars, f.FilePath); found {
if val != "" {
valInt, err := strconv.ParseInt(val, f.Base, 64)
if err != nil {
return fmt.Errorf("could not parse %q as int value from %s for flag %s: %s", val, source, f.Name, err)
}
f.Value = valInt
f.HasBeenSet = true
}
}
for _, name := range f.Names() {
if f.Destination != nil {
set.Int64Var(f.Destination, name, f.Value, f.Usage)
continue
}
set.Int64(name, f.Value, f.Usage)
}
return nil
}
// Get returns the flag’s value in the given Context.
func (f *Int64Flag) Get(ctx *Context) int64 {
return ctx.Int64(f.Name)
}
// RunAction executes flag action if set
func (f *Int64Flag) RunAction(c *Context) error {
if f.Action != nil {
return f.Action(c, c.Int64(f.Name))
}
return nil
}
// Int64 looks up the value of a local Int64Flag, returns
// 0 if not found
func (cCtx *Context) Int64(name string) int64 {
if fs := cCtx.lookupFlagSet(name); fs != nil {
return lookupInt64(name, fs)
}
return 0
}
func lookupInt64(name string, set *flag.FlagSet) int64 {
f := set.Lookup(name)
if f != nil {
parsed, err := strconv.ParseInt(f.Value.String(), 0, 64)
if err != nil {
return 0
}
return parsed
}
return 0
}
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