Initial QSfera import

Server/vendor/github.com/gorilla/schema/converter.go

@@ -0,0 +1,222 @@
+// Copyright 2012 The Gorilla Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package schema
+
+import (
+	"reflect"
+	"strconv"
+)
+
+type Converter func(string) reflect.Value
+
+var (
+	invalidValue = reflect.Value{}
+	boolType     = reflect.Bool
+	float32Type  = reflect.Float32
+	float64Type  = reflect.Float64
+	intType      = reflect.Int
+	int8Type     = reflect.Int8
+	int16Type    = reflect.Int16
+	int32Type    = reflect.Int32
+	int64Type    = reflect.Int64
+	stringType   = reflect.String
+	uintType     = reflect.Uint
+	uint8Type    = reflect.Uint8
+	uint16Type   = reflect.Uint16
+	uint32Type   = reflect.Uint32
+	uint64Type   = reflect.Uint64
+)
+
+// Default converters for basic types.
+var builtinConverters = map[reflect.Kind]Converter{
+	boolType:    convertBool,
+	float32Type: convertFloat32,
+	float64Type: convertFloat64,
+	intType:     convertInt,
+	int8Type:    convertInt8,
+	int16Type:   convertInt16,
+	int32Type:   convertInt32,
+	int64Type:   convertInt64,
+	stringType:  convertString,
+	uintType:    convertUint,
+	uint8Type:   convertUint8,
+	uint16Type:  convertUint16,
+	uint32Type:  convertUint32,
+	uint64Type:  convertUint64,
+}
+
+func convertBool(value string) reflect.Value {
+	if value == "on" {
+		return reflect.ValueOf(true)
+	} else if v, err := strconv.ParseBool(value); err == nil {
+		return reflect.ValueOf(v)
+	}
+	return invalidValue
+}
+
+func convertFloat32(value string) reflect.Value {
+	if v, err := strconv.ParseFloat(value, 32); err == nil {
+		return reflect.ValueOf(float32(v))
+	}
+	return invalidValue
+}
+
+func convertFloat64(value string) reflect.Value {
+	if v, err := strconv.ParseFloat(value, 64); err == nil {
+		return reflect.ValueOf(v)
+	}
+	return invalidValue
+}
+
+func convertInt(value string) reflect.Value {
+	if v, err := strconv.ParseInt(value, 10, 0); err == nil {
+		return reflect.ValueOf(int(v))
+	}
+	return invalidValue
+}
+
+func convertInt8(value string) reflect.Value {
+	if v, err := strconv.ParseInt(value, 10, 8); err == nil {
+		return reflect.ValueOf(int8(v))
+	}
+	return invalidValue
+}
+
+func convertInt16(value string) reflect.Value {
+	if v, err := strconv.ParseInt(value, 10, 16); err == nil {
+		return reflect.ValueOf(int16(v))
+	}
+	return invalidValue
+}
+
+func convertInt32(value string) reflect.Value {
+	if v, err := strconv.ParseInt(value, 10, 32); err == nil {
+		return reflect.ValueOf(int32(v))
+	}
+	return invalidValue
+}
+
+func convertInt64(value string) reflect.Value {
+	if v, err := strconv.ParseInt(value, 10, 64); err == nil {
+		return reflect.ValueOf(v)
+	}
+	return invalidValue
+}
+
+func convertString(value string) reflect.Value {
+	return reflect.ValueOf(value)
+}
+
+func convertUint(value string) reflect.Value {
+	if v, err := strconv.ParseUint(value, 10, 0); err == nil {
+		return reflect.ValueOf(uint(v))
+	}
+	return invalidValue
+}
+
+func convertUint8(value string) reflect.Value {
+	if v, err := strconv.ParseUint(value, 10, 8); err == nil {
+		return reflect.ValueOf(uint8(v))
+	}
+	return invalidValue
+}
+
+func convertUint16(value string) reflect.Value {
+	if v, err := strconv.ParseUint(value, 10, 16); err == nil {
+		return reflect.ValueOf(uint16(v))
+	}
+	return invalidValue
+}
+
+func convertUint32(value string) reflect.Value {
+	if v, err := strconv.ParseUint(value, 10, 32); err == nil {
+		return reflect.ValueOf(uint32(v))
+	}
+	return invalidValue
+}
+
+func convertUint64(value string) reflect.Value {
+	if v, err := strconv.ParseUint(value, 10, 64); err == nil {
+		return reflect.ValueOf(v)
+	}
+	return invalidValue
+}
+
+func convertPointer(k reflect.Kind, value string) reflect.Value {
+	switch k {
+	case boolType:
+		if v := convertBool(value); v.IsValid() {
+			converted := v.Bool()
+			return reflect.ValueOf(&converted)
+		}
+	case float32Type:
+		if v := convertFloat32(value); v.IsValid() {
+			converted := float32(v.Float())
+			return reflect.ValueOf(&converted)
+		}
+	case float64Type:
+		if v := convertFloat64(value); v.IsValid() {
+			converted := float64(v.Float())
+			return reflect.ValueOf(&converted)
+		}
+	case intType:
+		if v := convertInt(value); v.IsValid() {
+			converted := int(v.Int())
+			return reflect.ValueOf(&converted)
+		}
+	case int8Type:
+		if v := convertInt8(value); v.IsValid() {
+			converted := int8(v.Int())
+			return reflect.ValueOf(&converted)
+		}
+	case int16Type:
+		if v := convertInt16(value); v.IsValid() {
+			converted := int16(v.Int())
+			return reflect.ValueOf(&converted)
+		}
+	case int32Type:
+		if v := convertInt32(value); v.IsValid() {
+			converted := int32(v.Int())
+			return reflect.ValueOf(&converted)
+		}
+	case int64Type:
+		if v := convertInt64(value); v.IsValid() {
+			converted := int64(v.Int())
+			return reflect.ValueOf(&converted)
+		}
+	case stringType:
+		if v := convertString(value); v.IsValid() {
+			converted := v.String()
+			return reflect.ValueOf(&converted)
+		}
+	case uintType:
+		if v := convertUint(value); v.IsValid() {
+			converted := uint(v.Uint())
+			return reflect.ValueOf(&converted)
+		}
+	case uint8Type:
+		if v := convertUint8(value); v.IsValid() {
+			converted := uint8(v.Uint())
+			return reflect.ValueOf(&converted)
+		}
+	case uint16Type:
+		if v := convertUint16(value); v.IsValid() {
+			converted := uint16(v.Uint())
+			return reflect.ValueOf(&converted)
+		}
+	case uint32Type:
+		if v := convertUint32(value); v.IsValid() {
+			converted := uint32(v.Uint())
+			return reflect.ValueOf(&converted)
+		}
+	case uint64Type:
+		if v := convertUint64(value); v.IsValid() {
+			converted := uint64(v.Uint())
+			return reflect.ValueOf(&converted)
+		}
+	}
+
+	return invalidValue
+}