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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/platform/wtf/text/text_codec_replacement.h"
#include <memory>
#include "third_party/blink/renderer/platform/wtf/text/character_names.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace WTF {
TextCodecReplacement::TextCodecReplacement()
: replacement_error_returned_(false) {}
void TextCodecReplacement::RegisterEncodingNames(
EncodingNameRegistrar registrar) {
// Taken from the alias table at·https://encoding.spec.whatwg.org/
registrar("replacement", "replacement");
registrar("csiso2022kr", "replacement");
registrar("hz-gb-2312", "replacement");
registrar("iso-2022-cn", "replacement");
registrar("iso-2022-cn-ext", "replacement");
registrar("iso-2022-kr", "replacement");
}
static std::unique_ptr<TextCodec> NewStreamingTextDecoderReplacement(
const TextEncoding&,
const void*) {
return std::make_unique<TextCodecReplacement>();
}
void TextCodecReplacement::RegisterCodecs(TextCodecRegistrar registrar) {
registrar("replacement", NewStreamingTextDecoderReplacement, nullptr);
}
String TextCodecReplacement::Decode(base::span<const uint8_t> data,
FlushBehavior,
bool,
bool& saw_error) {
// https://encoding.spec.whatwg.org/#replacement-decoder
// 1. If byte is end-of-stream, return finished.
if (data.empty()) {
return String();
}
// 2. If replacement error returned flag is unset, set the replacement
// error returned flag and return error.
if (!replacement_error_returned_) {
replacement_error_returned_ = true;
saw_error = true;
return String(base::span_from_ref(kReplacementCharacter));
}
// 3. Return finished.
return String();
}
} // namespace WTF
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