mirror of
https://gitee.com/johng/gf
synced 2026-07-06 21:45:34 +08:00
316 lines
7.8 KiB
Go
316 lines
7.8 KiB
Go
// Copyright 2017 gf Author(https://gitee.com/johng/gf). All Rights Reserved.
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//
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// This Source Code Form is subject to the terms of the MIT License.
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// If a copy of the MIT was not distributed with this file,
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// You can obtain one at https://gitee.com/johng/gf.
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// 类型转换.
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// 内部使用了bytes作为底层转换类型，效率很高。
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package gconv
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import (
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"fmt"
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"time"
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"strconv"
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"encoding/json"
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"gitee.com/johng/gf/g/os/gtime"
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"gitee.com/johng/gf/g/util/gstr"
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"gitee.com/johng/gf/g/encoding/gbinary"
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)
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// 将变量i转换为字符串指定的类型t
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func Convert(i interface{}, t string, params...interface{}) interface{} {
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switch t {
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case "int": return Int(i)
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case "int8": return Int8(i)
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case "int16": return Int16(i)
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case "int32": return Int32(i)
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case "int64": return Int64(i)
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case "uint": return Uint(i)
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case "uint8": return Uint8(i)
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case "uint16": return Uint16(i)
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case "uint32": return Uint32(i)
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case "uint64": return Uint64(i)
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case "float32": return Float32(i)
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case "float64": return Float64(i)
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case "bool": return Bool(i)
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case "string": return String(i)
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case "[]byte": return Bytes(i)
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case "time.Time":
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if len(params) > 0 {
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return Time(i, String(params[0]))
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}
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return Time(i)
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case "time.Duration": return TimeDuration(i)
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default:
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return i
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}
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}
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// 将变量i转换为time.Time类型
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func Time(i interface{}, format...string) time.Time {
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s := String(i)
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// 优先使用用户输入日期格式进行转换
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if len(format) > 0 {
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t, _ := gtime.StrToTimeFormat(s, format[0])
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return t
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}
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t := int64(0)
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n := int64(0)
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if gstr.IsNumeric(s) {
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// 纯数字
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if len(s) > 9 {
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// 前面10位为时间戳秒，后面转纳秒
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t = Int64(s[0 : 10])
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if len(s) > 10 {
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n = Int64(s[10 : ])
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// 如果按照纳秒计算时间则完整字符串长度为19位，这里要将纳秒字段补齐
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if len(s) < 19 {
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for i := 0; i < 19 - len(s); i++ {
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n *= 10
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}
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}
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}
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}
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} else {
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t, _ := gtime.StrToTime(s)
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return t
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}
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return time.Unix(t, n)
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}
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// 将变量i转换为time.Time类型
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func TimeDuration(i interface{}) time.Duration {
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return time.Duration(Int64(i))
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}
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func Bytes(i interface{}) []byte {
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if i == nil {
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return nil
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}
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if r, ok := i.([]byte); ok {
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return r
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} else {
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return gbinary.Encode(i)
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}
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}
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// 基础的字符串类型转换
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func String(i interface{}) string {
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if i == nil {
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return ""
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}
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switch value := i.(type) {
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case int: return strconv.Itoa(value)
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case int8: return strconv.Itoa(int(value))
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case int16: return strconv.Itoa(int(value))
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case int32: return strconv.Itoa(int(value))
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case int64: return strconv.Itoa(int(value))
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case uint: return strconv.FormatUint(uint64(value), 10)
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case uint8: return strconv.FormatUint(uint64(value), 10)
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case uint16: return strconv.FormatUint(uint64(value), 10)
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case uint32: return strconv.FormatUint(uint64(value), 10)
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case uint64: return strconv.FormatUint(uint64(value), 10)
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case float32: return strconv.FormatFloat(float64(value), 'f', -1, 32)
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case float64: return strconv.FormatFloat(value, 'f', -1, 64)
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case bool: return strconv.FormatBool(value)
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case string: return value
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case []byte: return string(value)
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default:
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// 默认使用json进行字符串转换
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jsonContent, _ := json.Marshal(value)
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return string(jsonContent)
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}
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}
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func Strings(i interface{}) []string {
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if i == nil {
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return nil
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}
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if r, ok := i.([]string); ok {
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return r
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} else if r, ok := i.([]interface{}); ok {
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strs := make([]string, len(r))
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for k, v := range r {
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strs[k] = String(v)
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}
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return strs
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}
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return []string{fmt.Sprintf("%v", i)}
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}
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//false: "", 0, false, off
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func Bool(i interface{}) bool {
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if i == nil {
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return false
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}
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if v, ok := i.(bool); ok {
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return v
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}
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if s := String(i); s != "" && s != "0" && s != "false" && s != "off" {
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return true
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}
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return false
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}
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func Int(i interface{}) int {
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if i == nil {
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return 0
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}
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switch value := i.(type) {
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case int: return value
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case int8: return int(value)
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case int16: return int(value)
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case int32: return int(value)
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case int64: return int(value)
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case uint: return int(value)
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case uint8: return int(value)
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case uint16: return int(value)
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case uint32: return int(value)
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case uint64: return int(value)
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case float32: return int(value)
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case float64: return int(value)
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case bool:
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if value {
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return 1
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}
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return 0
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default:
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v, _ := strconv.Atoi(String(value))
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return v
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}
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}
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func Int8(i interface{}) int8 {
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if i == nil {
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return 0
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}
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if v, ok := i.(int8); ok {
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return v
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}
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return int8(Int(i))
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}
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func Int16(i interface{}) int16 {
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if i == nil {
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return 0
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}
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if v, ok := i.(int16); ok {
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return v
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}
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return int16(Int(i))
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}
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func Int32(i interface{}) int32 {
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if i == nil {
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return 0
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}
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if v, ok := i.(int32); ok {
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return v
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}
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return int32(Int(i))
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}
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func Int64(i interface{}) int64 {
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if i == nil {
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return 0
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}
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if v, ok := i.(int64); ok {
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return v
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}
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return int64(Int(i))
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}
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func Uint(i interface{}) uint {
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if i == nil {
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return 0
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}
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switch value := i.(type) {
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case int: return uint(value)
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case int8: return uint(value)
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case int16: return uint(value)
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case int32: return uint(value)
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case int64: return uint(value)
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case uint: return value
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case uint8: return uint(value)
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case uint16: return uint(value)
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case uint32: return uint(value)
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case uint64: return uint(value)
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case float32: return uint(value)
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case float64: return uint(value)
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case bool:
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if value {
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return 1
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}
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return 0
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default:
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v, _ := strconv.ParseUint(String(value), 10, 64)
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return uint(v)
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}
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}
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func Uint8(i interface{}) uint8 {
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if i == nil {
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return 0
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}
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if v, ok := i.(uint8); ok {
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return v
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}
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return uint8(Uint(i))
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}
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func Uint16(i interface{}) uint16 {
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if i == nil {
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return 0
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}
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if v, ok := i.(uint16); ok {
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return v
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}
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return uint16(Uint(i))
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}
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func Uint32(i interface{}) uint32 {
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if i == nil {
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return 0
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}
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if v, ok := i.(uint32); ok {
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return v
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}
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return uint32(Uint(i))
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}
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func Uint64(i interface{}) uint64 {
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if i == nil {
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return 0
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}
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if v, ok := i.(uint64); ok {
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return v
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}
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return uint64(Uint(i))
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}
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func Float32 (i interface{}) float32 {
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if i == nil {
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return 0
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}
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if v, ok := i.(float32); ok {
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return v
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}
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v, _ := strconv.ParseFloat(String(i), 64)
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return float32(v)
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}
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func Float64 (i interface{}) float64 {
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if i == nil {
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return 0
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}
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if v, ok := i.(float64); ok {
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return v
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}
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v, _ := strconv.ParseFloat(String(i), 64)
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return v
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}
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