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convert.go
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convert.go
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// convert
/*
数据类型之间的转换
var s := "168000"
i, _ := toolbox.Int(s)
i32, _ := toolbox.Int32(s)
i64, _ := toolbox.Int64(s)
f32, _ := toolbox.Float32(s)
f64, _ := toolbox.Float64(s)
*/
package tools
import (
"html/template"
"strconv"
"strings"
)
// args: value, precision(only for float)
func String(args ...interface{}) string {
value := args[0]
var precision int = 12 // default
switch value.(type) {
case string:
v, _ := value.(string)
return v
case int:
v, _ := value.(int)
return strconv.Itoa(v)
case int32:
v, _ := value.(int32)
return strconv.FormatInt(int64(v), 10)
case int64:
v, _ := value.(int64)
return strconv.FormatInt(v, 10)
case float32:
v, _ := value.(float32)
if len(args) >= 2 {
precision = args[1].(int)
}
return strconv.FormatFloat(float64(v), 'f', precision, 64)
case float64:
v, _ := value.(float64)
if len(args) >= 2 {
precision = args[1].(int)
}
return strconv.FormatFloat(v, 'f', precision, 64)
case template.HTML:
return string(value.(template.HTML))
default:
return ""
}
}
func Int(value interface{}) int {
switch value.(type) {
case string:
v, _ := value.(string)
rs, _ := strconv.Atoi(v)
return rs
case int:
v, _ := value.(int)
return v
case int32:
v, _ := value.(int32)
return int(v)
case int64:
v, _ := value.(int64)
return int(v)
case float32:
v, _ := value.(float32)
return int(v)
case float64:
v, _ := value.(float64)
return int(v)
default:
return int(0)
}
}
func Int32(value interface{}) int32 {
switch value.(type) {
case string:
v, _ := value.(string)
result, _ := strconv.ParseInt(v, 10, 32)
return int32(result)
case int:
v, _ := value.(int)
return int32(v)
case int32:
v, _ := value.(int32)
return int32(v)
case int64:
v, _ := value.(int64)
return int32(v)
case float32:
v, _ := value.(float32)
return int32(v)
case float64:
v, _ := value.(float64)
return int32(v)
default:
return int32(0)
}
}
func Int64(value interface{}) int64 {
switch value.(type) {
case string:
v, _ := value.(string)
rs, _ := strconv.ParseInt(v, 10, 32)
return rs
case int:
v, _ := value.(int)
return int64(v)
case int32:
v, _ := value.(int32)
return int64(v)
case int64:
v, _ := value.(int64)
return v
case float32:
v, _ := value.(float32)
return int64(v)
case float64:
v, _ := value.(float64)
return int64(v)
default:
return int64(0)
}
}
func Float32(value interface{}) float32 {
switch value.(type) {
case string:
v, _ := value.(string)
result, _ := strconv.ParseFloat(v, 32)
return float32(result)
case int:
v, _ := value.(int)
return float32(v)
case int32:
v, _ := value.(int32)
return float32(v)
case int64:
v, _ := value.(int64)
return float32(v)
case float32:
v, _ := value.(float32)
return v
case float64:
v, _ := value.(float64)
return float32(v)
default:
return float32(0)
}
}
func Float64(value interface{}) float64 {
switch value.(type) {
case string:
v, _ := value.(string)
rs, _ := strconv.ParseFloat(v, 64)
return rs
case int:
v, _ := value.(int)
return float64(v)
case int32:
v, _ := value.(int32)
return float64(v)
case int64:
v, _ := value.(int64)
return float64(v)
case float32:
v, _ := value.(float32)
return float64(v)
case float64:
v, _ := value.(float64)
return v
default:
return float64(0)
}
}
// // 123(true), 0(false),"-123"(true), "on"(true), "off"(false), "true"(true), "false"(false)
func Boolean(value interface{}) bool {
switch value.(type) {
case bool:
return value.(bool)
case int, int8, int16, int32, int64, float32, float64, uint, uint8, uint16, uint32, uint64:
return value != 0
case []byte:
if val, err := strconv.ParseBool(string(value.([]byte))); err == nil {
return val
} else if val, err := strconv.ParseFloat(string(value.([]byte)), 32); err == nil {
return val != 0
}
switch strings.ToLower(strings.TrimSpace(string(value.([]byte)))) {
case "on":
return true
case "off":
return false
case "true":
return true
case "false":
return false
}
case string:
if val, err := strconv.ParseBool(value.(string)); err == nil {
return val
} else if val, err := strconv.ParseFloat(value.(string), 32); err == nil {
return val != 0
}
switch strings.ToLower(strings.TrimSpace(value.(string))) {
case "on":
return true
case "off":
return false
case "true":
return true
case "false":
return false
}
default:
return false
}
return false
}