Adding the ability to bind a flag to a key. Will set the default & override automatically.

Use like:
	fetchCmd.Flags().Int("rsstimeout", 5, "Timeout (in min) for RSS retrival")
	viper.BindPFlag("rsstimeout", fetchCmd.Flags().Lookup("rsstimeout"))
This commit is contained in:
spf13 2014-06-27 12:29:37 -04:00
parent af373af72c
commit 7c42740ea6

View file

@ -23,6 +23,7 @@ import (
"github.com/mitchellh/mapstructure" "github.com/mitchellh/mapstructure"
"github.com/spf13/cast" "github.com/spf13/cast"
jww "github.com/spf13/jwalterweatherman" jww "github.com/spf13/jwalterweatherman"
"github.com/spf13/pflag"
"gopkg.in/yaml.v1" "gopkg.in/yaml.v1"
) )
@ -40,6 +41,7 @@ var configType string
var config map[string]interface{} = make(map[string]interface{}) var config map[string]interface{} = make(map[string]interface{})
var override map[string]interface{} = make(map[string]interface{}) var override map[string]interface{} = make(map[string]interface{})
var defaults map[string]interface{} = make(map[string]interface{}) var defaults map[string]interface{} = make(map[string]interface{})
var pflags map[string]*pflag.Flag = make(map[string]*pflag.Flag)
var aliases map[string]string = make(map[string]string) var aliases map[string]string = make(map[string]string)
func SetConfigFile(in string) { func SetConfigFile(in string) {
@ -116,6 +118,15 @@ func GetAllIntoStruct(rawVal interface{}) (err error) {
return return
} }
func BindPFlag(key string, flag *pflag.Flag) (err error) {
if flag == nil {
return fmt.Errorf("flag for %q is nil", key)
}
pflags[key] = flag
SetDefault(key, flag.Value.String())
return nil
}
func find(key string) interface{} { func find(key string) interface{} {
var val interface{} var val interface{}
var exists bool var exists bool
@ -123,6 +134,15 @@ func find(key string) interface{} {
// if the requested key is an alias, then return the proper key // if the requested key is an alias, then return the proper key
key = realKey(key) key = realKey(key)
// PFlag Override first
flag, exists := pflags[key]
if exists {
if flag.Changed {
jww.TRACE.Println(key, "found in override (via pflag):", val)
return flag.Value.String()
}
}
val, exists = override[key] val, exists = override[key]
if exists { if exists {
jww.TRACE.Println(key, "found in override:", val) jww.TRACE.Println(key, "found in override:", val)