mirror of
https://github.com/astaxie/beego.git
synced 2024-12-18 23:50:49 +00:00
320 lines
6.9 KiB
Go
320 lines
6.9 KiB
Go
// Copyright 2014 beego Author. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package orm
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import (
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"fmt"
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"math/big"
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"reflect"
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"strconv"
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"strings"
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"time"
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)
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type fn func(string) string
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var (
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nameStrategyMap = map[string]fn{
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defaultNameStrategy: snakeString,
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SnakeAcronymNameStrategy: snakeStringWithAcronym,
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}
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defaultNameStrategy = "snakeString"
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SnakeAcronymNameStrategy = "snakeStringWithAcronym"
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nameStrategy = defaultNameStrategy
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)
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// StrTo is the target string
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type StrTo string
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// Set string
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func (f *StrTo) Set(v string) {
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if v != "" {
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*f = StrTo(v)
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} else {
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f.Clear()
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}
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}
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// Clear string
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func (f *StrTo) Clear() {
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*f = StrTo(0x1E)
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}
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// Exist check string exist
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func (f StrTo) Exist() bool {
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return string(f) != string(0x1E)
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}
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// Bool string to bool
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func (f StrTo) Bool() (bool, error) {
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return strconv.ParseBool(f.String())
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}
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// Float32 string to float32
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func (f StrTo) Float32() (float32, error) {
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v, err := strconv.ParseFloat(f.String(), 32)
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return float32(v), err
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}
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// Float64 string to float64
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func (f StrTo) Float64() (float64, error) {
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return strconv.ParseFloat(f.String(), 64)
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}
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// Int string to int
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func (f StrTo) Int() (int, error) {
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v, err := strconv.ParseInt(f.String(), 10, 32)
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return int(v), err
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}
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// Int8 string to int8
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func (f StrTo) Int8() (int8, error) {
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v, err := strconv.ParseInt(f.String(), 10, 8)
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return int8(v), err
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}
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// Int16 string to int16
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func (f StrTo) Int16() (int16, error) {
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v, err := strconv.ParseInt(f.String(), 10, 16)
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return int16(v), err
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}
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// Int32 string to int32
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func (f StrTo) Int32() (int32, error) {
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v, err := strconv.ParseInt(f.String(), 10, 32)
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return int32(v), err
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}
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// Int64 string to int64
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func (f StrTo) Int64() (int64, error) {
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v, err := strconv.ParseInt(f.String(), 10, 64)
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if err != nil {
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i := new(big.Int)
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ni, ok := i.SetString(f.String(), 10) // octal
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if !ok {
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return v, err
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}
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return ni.Int64(), nil
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}
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return v, err
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}
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// Uint string to uint
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func (f StrTo) Uint() (uint, error) {
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v, err := strconv.ParseUint(f.String(), 10, 32)
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return uint(v), err
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}
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// Uint8 string to uint8
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func (f StrTo) Uint8() (uint8, error) {
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v, err := strconv.ParseUint(f.String(), 10, 8)
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return uint8(v), err
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}
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// Uint16 string to uint16
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func (f StrTo) Uint16() (uint16, error) {
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v, err := strconv.ParseUint(f.String(), 10, 16)
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return uint16(v), err
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}
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// Uint32 string to uint32
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func (f StrTo) Uint32() (uint32, error) {
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v, err := strconv.ParseUint(f.String(), 10, 32)
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return uint32(v), err
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}
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// Uint64 string to uint64
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func (f StrTo) Uint64() (uint64, error) {
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v, err := strconv.ParseUint(f.String(), 10, 64)
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if err != nil {
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i := new(big.Int)
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ni, ok := i.SetString(f.String(), 10)
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if !ok {
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return v, err
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}
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return ni.Uint64(), nil
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}
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return v, err
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}
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// String string to string
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func (f StrTo) String() string {
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if f.Exist() {
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return string(f)
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}
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return ""
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}
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// ToStr interface to string
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func ToStr(value interface{}, args ...int) (s string) {
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switch v := value.(type) {
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case bool:
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s = strconv.FormatBool(v)
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case float32:
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s = strconv.FormatFloat(float64(v), 'f', argInt(args).Get(0, -1), argInt(args).Get(1, 32))
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case float64:
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s = strconv.FormatFloat(v, 'f', argInt(args).Get(0, -1), argInt(args).Get(1, 64))
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case int:
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s = strconv.FormatInt(int64(v), argInt(args).Get(0, 10))
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case int8:
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s = strconv.FormatInt(int64(v), argInt(args).Get(0, 10))
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case int16:
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s = strconv.FormatInt(int64(v), argInt(args).Get(0, 10))
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case int32:
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s = strconv.FormatInt(int64(v), argInt(args).Get(0, 10))
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case int64:
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s = strconv.FormatInt(v, argInt(args).Get(0, 10))
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case uint:
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s = strconv.FormatUint(uint64(v), argInt(args).Get(0, 10))
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case uint8:
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s = strconv.FormatUint(uint64(v), argInt(args).Get(0, 10))
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case uint16:
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s = strconv.FormatUint(uint64(v), argInt(args).Get(0, 10))
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case uint32:
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s = strconv.FormatUint(uint64(v), argInt(args).Get(0, 10))
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case uint64:
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s = strconv.FormatUint(v, argInt(args).Get(0, 10))
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case string:
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s = v
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case []byte:
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s = string(v)
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default:
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s = fmt.Sprintf("%v", v)
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}
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return s
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}
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// ToInt64 interface to int64
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func ToInt64(value interface{}) (d int64) {
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val := reflect.ValueOf(value)
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switch value.(type) {
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case int, int8, int16, int32, int64:
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d = val.Int()
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case uint, uint8, uint16, uint32, uint64:
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d = int64(val.Uint())
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default:
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panic(fmt.Errorf("ToInt64 need numeric not `%T`", value))
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}
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return
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}
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func snakeStringWithAcronym(s string) string {
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data := make([]byte, 0, len(s)*2)
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num := len(s)
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for i := 0; i < num; i++ {
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d := s[i]
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before := false
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after := false
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if i > 0 {
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before = s[i-1] >= 'a' && s[i-1] <= 'z'
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}
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if i+1 < num {
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after = s[i+1] >= 'a' && s[i+1] <= 'z'
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}
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if i > 0 && d >= 'A' && d <= 'Z' && (before || after) {
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data = append(data, '_')
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}
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data = append(data, d)
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}
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return strings.ToLower(string(data[:]))
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}
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// snake string, XxYy to xx_yy , XxYY to xx_y_y
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func snakeString(s string) string {
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data := make([]byte, 0, len(s)*2)
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j := false
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num := len(s)
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for i := 0; i < num; i++ {
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d := s[i]
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if i > 0 && d >= 'A' && d <= 'Z' && j {
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data = append(data, '_')
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}
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if d != '_' {
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j = true
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}
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data = append(data, d)
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}
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return strings.ToLower(string(data[:]))
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}
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// SetNameStrategy set different name strategy
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func SetNameStrategy(s string) {
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if SnakeAcronymNameStrategy != s {
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nameStrategy = defaultNameStrategy
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}
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nameStrategy = s
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}
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// camel string, xx_yy to XxYy
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func camelString(s string) string {
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data := make([]byte, 0, len(s))
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flag, num := true, len(s)-1
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for i := 0; i <= num; i++ {
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d := s[i]
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if d == '_' {
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flag = true
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continue
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} else if flag {
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if d >= 'a' && d <= 'z' {
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d = d - 32
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}
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flag = false
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}
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data = append(data, d)
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}
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return string(data[:])
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}
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type argString []string
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// get string by index from string slice
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func (a argString) Get(i int, args ...string) (r string) {
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if i >= 0 && i < len(a) {
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r = a[i]
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} else if len(args) > 0 {
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r = args[0]
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}
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return
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}
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type argInt []int
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// get int by index from int slice
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func (a argInt) Get(i int, args ...int) (r int) {
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if i >= 0 && i < len(a) {
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r = a[i]
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}
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if len(args) > 0 {
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r = args[0]
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}
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return
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}
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// parse time to string with location
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func timeParse(dateString, format string) (time.Time, error) {
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tp, err := time.ParseInLocation(format, dateString, DefaultTimeLoc)
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return tp, err
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}
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// get pointer indirect type
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func indirectType(v reflect.Type) reflect.Type {
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switch v.Kind() {
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case reflect.Ptr:
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return indirectType(v.Elem())
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default:
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return v
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}
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}
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