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util.go
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util.go
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package go1688
import (
"bytes"
"encoding/json"
"reflect"
"strconv"
"strings"
"sync"
)
func structToMap(data interface{}) map[string]string {
elem := reflect.ValueOf(data).Elem()
relType := elem.Type()
totalFields := relType.NumField()
m := make(map[string]string, totalFields)
for i := 0; i < totalFields; i++ {
relField := relType.Field(i)
kind := relField.Type.Kind()
field := elem.Field(i)
var val string
switch kind {
case reflect.Bool:
val = "false"
if field.Bool() {
val = "true"
}
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
val = strconv.FormatInt(field.Int(), 10)
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
val = strconv.FormatUint(field.Uint(), 10)
case reflect.Float32, reflect.Float64:
val = strconv.FormatFloat(field.Float(), 'f', -1, 64)
case reflect.String:
val = field.String()
default:
continue
}
if val == "" {
continue
}
name := relField.Name
if tagName := relField.Tag.Get("json"); tagName != "" {
if strings.HasSuffix(tagName, ",omitempty") {
name = strings.TrimSuffix(tagName, ",omitempty")
} else {
name = tagName
}
}
m[name] = val
}
return m
}
var stringsBuilderPool = sync.Pool{
New: func() any {
return new(strings.Builder)
},
}
func GetStringsBuilder() *strings.Builder {
builder := stringsBuilderPool.Get().(*strings.Builder)
builder.Reset()
return builder
}
func PutStringsBuilder(builder *strings.Builder) {
builder.Reset()
stringsBuilderPool.Put(builder)
}
var bytesBufferPool = sync.Pool{
New: func() any {
return new(bytes.Buffer)
},
}
func GetBytesBuffer() *bytes.Buffer {
buf := bytesBufferPool.Get().(*bytes.Buffer)
buf.Reset()
return buf
}
func PutBytesBuffer(buf *bytes.Buffer) {
bytesBufferPool.Put(buf)
}
// JSONMarshal encode json without html escape
func JSONMarshal(req interface{}) string {
buf := GetBytesBuffer()
defer PutBytesBuffer(buf)
encoder := json.NewEncoder(buf)
encoder.SetEscapeHTML(false)
encoder.Encode(req)
return buf.String()
}