102 lines
2.1 KiB
Go
102 lines
2.1 KiB
Go
package gocommon
|
|
|
|
import (
|
|
"encoding/binary"
|
|
"encoding/json"
|
|
"fmt"
|
|
"io"
|
|
"math/rand"
|
|
"path"
|
|
"reflect"
|
|
"strconv"
|
|
"strings"
|
|
"sync/atomic"
|
|
"time"
|
|
)
|
|
|
|
var sequenceStart = rand.Uint32()
|
|
|
|
func MakeHttpHandlerPattern(n ...string) string {
|
|
r := "/" + path.Join(n...)
|
|
if strings.HasSuffix(n[len(n)-1], "/") {
|
|
return r + "/"
|
|
}
|
|
|
|
return r
|
|
}
|
|
|
|
func MakeLocalUniqueId() string {
|
|
var b [10]byte
|
|
|
|
now := time.Now()
|
|
binary.BigEndian.PutUint32(b[6:10], uint32(now.Unix()))
|
|
binary.BigEndian.PutUint32(b[3:7], uint32(now.Nanosecond()))
|
|
binary.BigEndian.PutUint32(b[0:4], atomic.AddUint32(&sequenceStart, 1))
|
|
|
|
u := binary.LittleEndian.Uint64(b[2:])
|
|
a := strconv.FormatUint(u, 36)
|
|
return a[1:]
|
|
}
|
|
|
|
func SerializeInterface(w io.Writer, val interface{}) (err error) {
|
|
if val == nil {
|
|
return nil
|
|
}
|
|
|
|
value := reflect.ValueOf(val)
|
|
encoder := json.NewEncoder(w)
|
|
|
|
switch value.Kind() {
|
|
case reflect.String:
|
|
_, err = w.Write([]byte(value.String()))
|
|
|
|
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
|
_, err = w.Write([]byte(fmt.Sprintf("%d", value.Int())))
|
|
|
|
case reflect.Float32, reflect.Float64:
|
|
_, err = w.Write([]byte(fmt.Sprintf("%f", value.Float())))
|
|
|
|
case reflect.Bool:
|
|
if value.Bool() {
|
|
_, err = w.Write([]byte("true"))
|
|
} else {
|
|
_, err = w.Write([]byte("false"))
|
|
}
|
|
|
|
case reflect.Slice:
|
|
switch value.Type().Elem().Kind() {
|
|
case reflect.Uint8:
|
|
_, err = w.Write(value.Bytes())
|
|
|
|
default:
|
|
var conv []interface{}
|
|
for i := 0; i < value.Len(); i++ {
|
|
conv = append(conv, value.Index(i).Interface())
|
|
}
|
|
if len(conv) == 0 {
|
|
_, err = w.Write([]byte("[]"))
|
|
} else {
|
|
err = encoder.Encode(conv)
|
|
}
|
|
}
|
|
|
|
case reflect.Interface, reflect.Struct, reflect.Map:
|
|
if value.Kind() == reflect.Struct {
|
|
err = encoder.Encode(value.Interface())
|
|
} else if !value.IsNil() {
|
|
err = encoder.Encode(value.Interface())
|
|
}
|
|
|
|
case reflect.Ptr:
|
|
if !value.IsNil() {
|
|
if wro, ok := value.Interface().(io.WriterTo); ok {
|
|
_, err = wro.WriteTo(w)
|
|
} else {
|
|
err = json.NewEncoder(w).Encode(value.Interface())
|
|
}
|
|
}
|
|
}
|
|
|
|
return
|
|
}
|