diff options
Diffstat (limited to 'vendor/github.com/mitchellh/mapstructure/decode_hooks.go')
-rw-r--r-- | vendor/github.com/mitchellh/mapstructure/decode_hooks.go | 257 |
1 files changed, 0 insertions, 257 deletions
diff --git a/vendor/github.com/mitchellh/mapstructure/decode_hooks.go b/vendor/github.com/mitchellh/mapstructure/decode_hooks.go deleted file mode 100644 index 4d4bbc733..000000000 --- a/vendor/github.com/mitchellh/mapstructure/decode_hooks.go +++ /dev/null @@ -1,257 +0,0 @@ -package mapstructure - -import ( - "encoding" - "errors" - "fmt" - "net" - "reflect" - "strconv" - "strings" - "time" -) - -// typedDecodeHook takes a raw DecodeHookFunc (an interface{}) and turns -// it into the proper DecodeHookFunc type, such as DecodeHookFuncType. -func typedDecodeHook(h DecodeHookFunc) DecodeHookFunc { - // Create variables here so we can reference them with the reflect pkg - var f1 DecodeHookFuncType - var f2 DecodeHookFuncKind - var f3 DecodeHookFuncValue - - // Fill in the variables into this interface and the rest is done - // automatically using the reflect package. - potential := []interface{}{f1, f2, f3} - - v := reflect.ValueOf(h) - vt := v.Type() - for _, raw := range potential { - pt := reflect.ValueOf(raw).Type() - if vt.ConvertibleTo(pt) { - return v.Convert(pt).Interface() - } - } - - return nil -} - -// DecodeHookExec executes the given decode hook. This should be used -// since it'll naturally degrade to the older backwards compatible DecodeHookFunc -// that took reflect.Kind instead of reflect.Type. -func DecodeHookExec( - raw DecodeHookFunc, - from reflect.Value, to reflect.Value) (interface{}, error) { - - switch f := typedDecodeHook(raw).(type) { - case DecodeHookFuncType: - return f(from.Type(), to.Type(), from.Interface()) - case DecodeHookFuncKind: - return f(from.Kind(), to.Kind(), from.Interface()) - case DecodeHookFuncValue: - return f(from, to) - default: - return nil, errors.New("invalid decode hook signature") - } -} - -// ComposeDecodeHookFunc creates a single DecodeHookFunc that -// automatically composes multiple DecodeHookFuncs. -// -// The composed funcs are called in order, with the result of the -// previous transformation. -func ComposeDecodeHookFunc(fs ...DecodeHookFunc) DecodeHookFunc { - return func(f reflect.Value, t reflect.Value) (interface{}, error) { - var err error - data := f.Interface() - - newFrom := f - for _, f1 := range fs { - data, err = DecodeHookExec(f1, newFrom, t) - if err != nil { - return nil, err - } - newFrom = reflect.ValueOf(data) - } - - return data, nil - } -} - -// StringToSliceHookFunc returns a DecodeHookFunc that converts -// string to []string by splitting on the given sep. -func StringToSliceHookFunc(sep string) DecodeHookFunc { - return func( - f reflect.Kind, - t reflect.Kind, - data interface{}) (interface{}, error) { - if f != reflect.String || t != reflect.Slice { - return data, nil - } - - raw := data.(string) - if raw == "" { - return []string{}, nil - } - - return strings.Split(raw, sep), nil - } -} - -// StringToTimeDurationHookFunc returns a DecodeHookFunc that converts -// strings to time.Duration. -func StringToTimeDurationHookFunc() DecodeHookFunc { - return func( - f reflect.Type, - t reflect.Type, - data interface{}) (interface{}, error) { - if f.Kind() != reflect.String { - return data, nil - } - if t != reflect.TypeOf(time.Duration(5)) { - return data, nil - } - - // Convert it by parsing - return time.ParseDuration(data.(string)) - } -} - -// StringToIPHookFunc returns a DecodeHookFunc that converts -// strings to net.IP -func StringToIPHookFunc() DecodeHookFunc { - return func( - f reflect.Type, - t reflect.Type, - data interface{}) (interface{}, error) { - if f.Kind() != reflect.String { - return data, nil - } - if t != reflect.TypeOf(net.IP{}) { - return data, nil - } - - // Convert it by parsing - ip := net.ParseIP(data.(string)) - if ip == nil { - return net.IP{}, fmt.Errorf("failed parsing ip %v", data) - } - - return ip, nil - } -} - -// StringToIPNetHookFunc returns a DecodeHookFunc that converts -// strings to net.IPNet -func StringToIPNetHookFunc() DecodeHookFunc { - return func( - f reflect.Type, - t reflect.Type, - data interface{}) (interface{}, error) { - if f.Kind() != reflect.String { - return data, nil - } - if t != reflect.TypeOf(net.IPNet{}) { - return data, nil - } - - // Convert it by parsing - _, net, err := net.ParseCIDR(data.(string)) - return net, err - } -} - -// StringToTimeHookFunc returns a DecodeHookFunc that converts -// strings to time.Time. -func StringToTimeHookFunc(layout string) DecodeHookFunc { - return func( - f reflect.Type, - t reflect.Type, - data interface{}) (interface{}, error) { - if f.Kind() != reflect.String { - return data, nil - } - if t != reflect.TypeOf(time.Time{}) { - return data, nil - } - - // Convert it by parsing - return time.Parse(layout, data.(string)) - } -} - -// WeaklyTypedHook is a DecodeHookFunc which adds support for weak typing to -// the decoder. -// -// Note that this is significantly different from the WeaklyTypedInput option -// of the DecoderConfig. -func WeaklyTypedHook( - f reflect.Kind, - t reflect.Kind, - data interface{}) (interface{}, error) { - dataVal := reflect.ValueOf(data) - switch t { - case reflect.String: - switch f { - case reflect.Bool: - if dataVal.Bool() { - return "1", nil - } - return "0", nil - case reflect.Float32: - return strconv.FormatFloat(dataVal.Float(), 'f', -1, 64), nil - case reflect.Int: - return strconv.FormatInt(dataVal.Int(), 10), nil - case reflect.Slice: - dataType := dataVal.Type() - elemKind := dataType.Elem().Kind() - if elemKind == reflect.Uint8 { - return string(dataVal.Interface().([]uint8)), nil - } - case reflect.Uint: - return strconv.FormatUint(dataVal.Uint(), 10), nil - } - } - - return data, nil -} - -func RecursiveStructToMapHookFunc() DecodeHookFunc { - return func(f reflect.Value, t reflect.Value) (interface{}, error) { - if f.Kind() != reflect.Struct { - return f.Interface(), nil - } - - var i interface{} = struct{}{} - if t.Type() != reflect.TypeOf(&i).Elem() { - return f.Interface(), nil - } - - m := make(map[string]interface{}) - t.Set(reflect.ValueOf(m)) - - return f.Interface(), nil - } -} - -// TextUnmarshallerHookFunc returns a DecodeHookFunc that applies -// strings to the UnmarshalText function, when the target type -// implements the encoding.TextUnmarshaler interface -func TextUnmarshallerHookFunc() DecodeHookFuncType { - return func( - f reflect.Type, - t reflect.Type, - data interface{}) (interface{}, error) { - if f.Kind() != reflect.String { - return data, nil - } - result := reflect.New(t).Interface() - unmarshaller, ok := result.(encoding.TextUnmarshaler) - if !ok { - return data, nil - } - if err := unmarshaller.UnmarshalText([]byte(data.(string))); err != nil { - return nil, err - } - return result, nil - } -} |