88 lines
3.0 KiB
C++
88 lines
3.0 KiB
C++
/*
|
|
* Copyright (C) 2016-2020 Apple Inc. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
|
|
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
|
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
|
|
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "TextDecoder.h"
|
|
|
|
#include "HTMLParserIdioms.h"
|
|
#include "TextCodec.h"
|
|
#include "TextEncodingRegistry.h"
|
|
|
|
namespace WebCore {
|
|
|
|
TextDecoder::TextDecoder(const char* label, Options options)
|
|
: m_textEncoding(label)
|
|
, m_options(options)
|
|
{
|
|
}
|
|
|
|
TextDecoder::~TextDecoder() = default;
|
|
|
|
ExceptionOr<Ref<TextDecoder>> TextDecoder::create(const String& label, Options options)
|
|
{
|
|
String strippedLabel = stripLeadingAndTrailingHTMLSpaces(label);
|
|
const UChar nullCharacter = '\0';
|
|
if (strippedLabel.contains(nullCharacter))
|
|
return Exception { RangeError };
|
|
auto decoder = adoptRef(*new TextDecoder(strippedLabel.utf8().data(), options));
|
|
if (!decoder->m_textEncoding.isValid() || !strcmp(decoder->m_textEncoding.name(), "replacement"))
|
|
return Exception { RangeError };
|
|
return decoder;
|
|
}
|
|
|
|
ExceptionOr<String> TextDecoder::decode(std::optional<BufferSource::VariantType> input, DecodeOptions options)
|
|
{
|
|
std::optional<BufferSource> inputBuffer;
|
|
const uint8_t* data = nullptr;
|
|
size_t length = 0;
|
|
if (input) {
|
|
inputBuffer = BufferSource(WTFMove(input.value()));
|
|
data = inputBuffer->data();
|
|
length = inputBuffer->length();
|
|
}
|
|
|
|
if (!m_codec) {
|
|
m_codec = newTextCodec(m_textEncoding);
|
|
if (!m_options.ignoreBOM)
|
|
m_codec->stripByteOrderMark();
|
|
}
|
|
|
|
bool sawError = false;
|
|
String result = m_codec->decode(reinterpret_cast<const char*>(data), length, !options.stream, m_options.fatal, sawError);
|
|
|
|
if (!options.stream && !m_options.ignoreBOM)
|
|
m_codec->stripByteOrderMark();
|
|
|
|
if (sawError && m_options.fatal)
|
|
return Exception { TypeError };
|
|
return result;
|
|
}
|
|
|
|
String TextDecoder::encoding() const
|
|
{
|
|
return String(m_textEncoding.name()).convertToASCIILowercase();
|
|
}
|
|
|
|
}
|