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Merge 3ddf111092f85bd37ec0a6bf0e94798705407334 into d75fcd4c9ab260e5225de590f1f0f8c0e0e12d11

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Md Mushfiqur Rahim 2026-06-13 15:39:29 +06:00 committed by GitHub
commit ea67467460
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1 changed files with 8 additions and 2 deletions
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10
render/json.go
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@ -10,6 +10,7 @@ import (
"html/template"
"net/http"
"unicode"
"unicode/utf16"
"github.com/gin-gonic/gin/codec/json"
"github.com/gin-gonic/gin/internal/bytesconv"
@ -160,11 +161,16 @@ func (r AsciiJSON) Render(w http.ResponseWriter) error {
}
var buffer bytes.Buffer
escapeBuf := make([]byte, 0, 6) // Preallocate 6 bytes for Unicode escape sequences
escapeBuf := make([]byte, 0, 12) // Preallocate for up to two \uXXXX sequences
for _, r := range bytesconv.BytesToString(ret) {
if r > unicode.MaxASCII {
escapeBuf = fmt.Appendf(escapeBuf[:0], "\\u%04x", r) // Reuse escapeBuf
if r > 0xFFFF {
surrogates := utf16.Encode([]rune{r})
escapeBuf = fmt.Appendf(escapeBuf[:0], "\\u%04x\\u%04x", surrogates[0], surrogates[1])
} else {
escapeBuf = fmt.Appendf(escapeBuf[:0], "\\u%04x", r)
}
buffer.Write(escapeBuf)
} else {
buffer.WriteByte(byte(r))