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// Copyright 2015 The Xorm 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 xorm
import (
"errors"
"fmt"
"reflect"
"sort"
"strconv"
"strings"
"github.com/go-xorm/core"
)
// str2PK convert string value to primary key value according to tp
func str2PKValue(s string, tp reflect.Type) (reflect.Value, error) {
var err error
var result interface{}
var defReturn = reflect.Zero(tp)
switch tp.Kind() {
case reflect.Int:
result, err = strconv.Atoi(s)
if err != nil {
return defReturn, fmt.Errorf("convert %s as int: %s", s, err.Error())
}
case reflect.Int8:
x, err := strconv.Atoi(s)
if err != nil {
return defReturn, fmt.Errorf("convert %s as int8: %s", s, err.Error())
}
result = int8(x)
case reflect.Int16:
x, err := strconv.Atoi(s)
if err != nil {
return defReturn, fmt.Errorf("convert %s as int16: %s", s, err.Error())
}
result = int16(x)
case reflect.Int32:
x, err := strconv.Atoi(s)
if err != nil {
return defReturn, fmt.Errorf("convert %s as int32: %s", s, err.Error())
}
result = int32(x)
case reflect.Int64:
result, err = strconv.ParseInt(s, 10, 64)
if err != nil {
return defReturn, fmt.Errorf("convert %s as int64: %s", s, err.Error())
}
case reflect.Uint:
x, err := strconv.ParseUint(s, 10, 64)
if err != nil {
return defReturn, fmt.Errorf("convert %s as uint: %s", s, err.Error())
}
result = uint(x)
case reflect.Uint8:
x, err := strconv.ParseUint(s, 10, 64)
if err != nil {
return defReturn, fmt.Errorf("convert %s as uint8: %s", s, err.Error())
}
result = uint8(x)
case reflect.Uint16:
x, err := strconv.ParseUint(s, 10, 64)
if err != nil {
return defReturn, fmt.Errorf("convert %s as uint16: %s", s, err.Error())
}
result = uint16(x)
case reflect.Uint32:
x, err := strconv.ParseUint(s, 10, 64)
if err != nil {
return defReturn, fmt.Errorf("convert %s as uint32: %s", s, err.Error())
}
result = uint32(x)
case reflect.Uint64:
result, err = strconv.ParseUint(s, 10, 64)
if err != nil {
return defReturn, fmt.Errorf("convert %s as uint64: %s", s, err.Error())
}
case reflect.String:
result = s
default:
return defReturn, errors.New("unsupported convert type")
}
return reflect.ValueOf(result).Convert(tp), nil
}
func str2PK(s string, tp reflect.Type) (interface{}, error) {
v, err := str2PKValue(s, tp)
if err != nil {
return nil, err
}
return v.Interface(), nil
}
func splitTag(tag string) (tags []string) {
tag = strings.TrimSpace(tag)
var hasQuote = false
var lastIdx = 0
for i, t := range tag {
if t == '\'' {
hasQuote = !hasQuote
} else if t == ' ' {
if lastIdx < i && !hasQuote {
tags = append(tags, strings.TrimSpace(tag[lastIdx:i]))
lastIdx = i + 1
}
}
}
if lastIdx < len(tag) {
tags = append(tags, strings.TrimSpace(tag[lastIdx:]))
}
return
}
type zeroable interface {
IsZero() bool
}
func isZero(k interface{}) bool {
switch k.(type) {
case int:
return k.(int) == 0
case int8:
return k.(int8) == 0
case int16:
return k.(int16) == 0
case int32:
return k.(int32) == 0
case int64:
return k.(int64) == 0
case uint:
return k.(uint) == 0
case uint8:
return k.(uint8) == 0
case uint16:
return k.(uint16) == 0
case uint32:
return k.(uint32) == 0
case uint64:
return k.(uint64) == 0
case float32:
return k.(float32) == 0
case float64:
return k.(float64) == 0
case bool:
return k.(bool) == false
case string:
return k.(string) == ""
case zeroable:
return k.(zeroable).IsZero()
}
return false
}
func isStructZero(v reflect.Value) bool {
if !v.IsValid() {
return true
}
for i := 0; i < v.NumField(); i++ {
field := v.Field(i)
switch field.Kind() {
case reflect.Ptr:
field = field.Elem()
fallthrough
case reflect.Struct:
if !isStructZero(field) {
return false
}
default:
if field.CanInterface() && !isZero(field.Interface()) {
return false
}
}
}
return true
}
func isArrayValueZero(v reflect.Value) bool {
if !v.IsValid() || v.Len() == 0 {
return true
}
for i := 0; i < v.Len(); i++ {
if !isZero(v.Index(i).Interface()) {
return false
}
}
return true
}
func int64ToIntValue(id int64, tp reflect.Type) reflect.Value {
var v interface{}
kind := tp.Kind()
if kind == reflect.Ptr {
kind = tp.Elem().Kind()
}
switch kind {
case reflect.Int16:
temp := int16(id)
v = &temp
case reflect.Int32:
temp := int32(id)
v = &temp
case reflect.Int:
temp := int(id)
v = &temp
case reflect.Int64:
temp := id
v = &temp
case reflect.Uint16:
temp := uint16(id)
v = &temp
case reflect.Uint32:
temp := uint32(id)
v = &temp
case reflect.Uint64:
temp := uint64(id)
v = &temp
case reflect.Uint:
temp := uint(id)
v = &temp
}
if tp.Kind() == reflect.Ptr {
return reflect.ValueOf(v).Convert(tp)
}
return reflect.ValueOf(v).Elem().Convert(tp)
}
func int64ToInt(id int64, tp reflect.Type) interface{} {
return int64ToIntValue(id, tp).Interface()
}
func isPKZero(pk core.PK) bool {
for _, k := range pk {
if isZero(k) {
return true
}
}
return false
}
func indexNoCase(s, sep string) int {
return strings.Index(strings.ToLower(s), strings.ToLower(sep))
}
func splitNoCase(s, sep string) []string {
idx := indexNoCase(s, sep)
if idx < 0 {
return []string{s}
}
return strings.Split(s, s[idx:idx+len(sep)])
}
func splitNNoCase(s, sep string, n int) []string {
idx := indexNoCase(s, sep)
if idx < 0 {
return []string{s}
}
return strings.SplitN(s, s[idx:idx+len(sep)], n)
}
func makeArray(elem string, count int) []string {
res := make([]string, count)
for i := 0; i < count; i++ {
res[i] = elem
}
return res
}
func rValue(bean interface{}) reflect.Value {
return reflect.Indirect(reflect.ValueOf(bean))
}
func rType(bean interface{}) reflect.Type {
sliceValue := reflect.Indirect(reflect.ValueOf(bean))
//return reflect.TypeOf(sliceValue.Interface())
return sliceValue.Type()
}
func structName(v reflect.Type) string {
for v.Kind() == reflect.Ptr {
v = v.Elem()
}
return v.Name()
}
func sliceEq(left, right []string) bool {
if len(left) != len(right) {
return false
}
sort.Sort(sort.StringSlice(left))
sort.Sort(sort.StringSlice(right))
for i := 0; i < len(left); i++ {
if left[i] != right[i] {
return false
}
}
return true
}
func indexName(tableName, idxName string) string {
return fmt.Sprintf("IDX_%v_%v", tableName, idxName)
}