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// +build !amd64,!arm64 go1.24 !go1.16 arm64,!go1.20
/**
* Copyright 2024 ByteDance Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package alg
import (
_ "unsafe"
"unicode/utf8"
"strconv"
"bytes"
"encoding/json"
"github.com/bytedance/sonic/internal/rt"
)
// Valid validates json and returns first non-blank character position,
// if it is only one valid json value.
// Otherwise returns invalid character position using start.
//
// Note: it does not check for the invalid UTF-8 characters.
func Valid(data []byte) (ok bool, start int) {
ok = json.Valid(data)
return ok, 0
}
var typeByte = rt.UnpackEface(byte(0)).Type
func Quote(e []byte, s string, double bool) []byte {
if len(s) == 0 {
if double {
return append(e, `"\"\""`...)
}
return append(e, `""`...)
}
b := e
ss := len(e)
e = append(e, '"')
start := 0
for i := 0; i < len(s); {
if b := s[i]; b < utf8.RuneSelf {
if rt.SafeSet[b] {
i++
continue
}
if start < i {
e = append(e, s[start:i]...)
}
e = append(e, '\\')
switch b {
case '\\', '"':
e = append(e, b)
case '\n':
e = append(e, 'n')
case '\r':
e = append(e, 'r')
case '\t':
e = append(e, 't')
default:
// This encodes bytes < 0x20 except for \t, \n and \r.
// If escapeHTML is set, it also escapes <, >, and &
// because they can lead to security holes when
// user-controlled strings are rendered into JSON
// and served to some browsers.
e = append(e, `u00`...)
e = append(e, rt.Hex[b>>4])
e = append(e, rt.Hex[b&0xF])
}
i++
start = i
continue
}
c, size := utf8.DecodeRuneInString(s[i:])
// if correct && c == utf8.RuneError && size == 1 {
// if start < i {
// e = append(e, s[start:i]...)
// }
// e = append(e, `\ufffd`...)
// i += size
// start = i
// continue
// }
if c == '\u2028' || c == '\u2029' {
if start < i {
e = append(e, s[start:i]...)
}
e = append(e, `\u202`...)
e = append(e, rt.Hex[c&0xF])
i += size
start = i
continue
}
i += size
}
if start < len(s) {
e = append(e, s[start:]...)
}
e = append(e, '"')
if double {
return strconv.AppendQuote(b, string(e[ss:]))
} else {
return e
}
}
func HtmlEscape(dst []byte, src []byte) []byte {
buf := bytes.NewBuffer(dst)
json.HTMLEscape(buf, src)
return buf.Bytes()
}
func F64toa(buf []byte, v float64) ([]byte) {
bs := bytes.NewBuffer(buf)
_ = json.NewEncoder(bs).Encode(v)
return bs.Bytes()
}
func F32toa(buf []byte, v float32) ([]byte) {
bs := bytes.NewBuffer(buf)
_ = json.NewEncoder(bs).Encode(v)
return bs.Bytes()
}
func I64toa(buf []byte, v int64) ([]byte) {
return strconv.AppendInt(buf, int64(v), 10)
}
func U64toa(buf []byte, v uint64) ([]byte) {
return strconv.AppendUint(buf, v, 10)
}
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