mirror of
https://github.com/go-gitea/gitea
synced 2024-11-14 06:04:25 +00:00
45 lines
1.6 KiB
Go
45 lines
1.6 KiB
Go
// Copyright 2022 The Gitea Authors. All rights reserved.
|
|
// SPDX-License-Identifier: MIT
|
|
|
|
//go:generate go run invisible/generate.go -v -o ./invisible_gen.go
|
|
|
|
//go:generate go run ambiguous/generate.go -v -o ./ambiguous_gen.go ambiguous/ambiguous.json
|
|
|
|
package charset
|
|
|
|
import (
|
|
"html/template"
|
|
"io"
|
|
"strings"
|
|
|
|
"code.gitea.io/gitea/modules/log"
|
|
"code.gitea.io/gitea/modules/setting"
|
|
"code.gitea.io/gitea/modules/translation"
|
|
)
|
|
|
|
// RuneNBSP is the codepoint for NBSP
|
|
const RuneNBSP = 0xa0
|
|
|
|
// EscapeControlHTML escapes the unicode control sequences in a provided html document
|
|
func EscapeControlHTML(html template.HTML, locale translation.Locale, allowed ...rune) (escaped *EscapeStatus, output template.HTML) {
|
|
sb := &strings.Builder{}
|
|
escaped, _ = EscapeControlReader(strings.NewReader(string(html)), sb, locale, allowed...) // err has been handled in EscapeControlReader
|
|
return escaped, template.HTML(sb.String())
|
|
}
|
|
|
|
// EscapeControlReader escapes the unicode control sequences in a provided reader of HTML content and writer in a locale and returns the findings as an EscapeStatus
|
|
func EscapeControlReader(reader io.Reader, writer io.Writer, locale translation.Locale, allowed ...rune) (escaped *EscapeStatus, err error) {
|
|
if !setting.UI.AmbiguousUnicodeDetection {
|
|
_, err = io.Copy(writer, reader)
|
|
return &EscapeStatus{}, err
|
|
}
|
|
outputStream := &HTMLStreamerWriter{Writer: writer}
|
|
streamer := NewEscapeStreamer(locale, outputStream, allowed...).(*escapeStreamer)
|
|
|
|
if err = StreamHTML(reader, streamer); err != nil {
|
|
streamer.escaped.HasError = true
|
|
log.Error("Error whilst escaping: %v", err)
|
|
}
|
|
return streamer.escaped, err
|
|
}
|