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/*
* Copyright (C) 2007-2017 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,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* 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 "TextCodecUserDefined.h"
#include <array>
#include <wtf/TZoneMallocInlines.h>
#include <wtf/text/CString.h>
#include <wtf/text/StringBuilder.h>
#include <wtf/text/WTFString.h>
namespace PAL {
WTF_MAKE_TZONE_ALLOCATED_IMPL(TextCodecUserDefined);
void TextCodecUserDefined::registerEncodingNames(EncodingNameRegistrar registrar)
{
registrar("x-user-defined"_s, "x-user-defined"_s);
}
void TextCodecUserDefined::registerCodecs(TextCodecRegistrar registrar)
{
registrar("x-user-defined"_s, [] {
return makeUnique<TextCodecUserDefined>();
});
}
String TextCodecUserDefined::decode(std::span<const uint8_t> bytes, bool, bool, bool&)
{
StringBuilder result;
result.reserveCapacity(bytes.size());
for (char byte : bytes)
result.append(static_cast<UChar>(byte & 0xF7FF));
return result.toString();
}
static Vector<uint8_t> encodeComplexUserDefined(StringView string, UnencodableHandling handling)
{
Vector<uint8_t> result;
for (auto character : string.codePoints()) {
int8_t signedByte = character;
if ((signedByte & 0xF7FF) == character)
result.append(signedByte);
else {
// No way to encode this character with x-user-defined.
UnencodableReplacementArray replacement;
result.append(TextCodec::getUnencodableReplacement(character, handling, replacement));
}
}
return result;
}
Vector<uint8_t> TextCodecUserDefined::encode(StringView string, UnencodableHandling handling) const
{
{
Vector<uint8_t> result(string.length());
size_t index = 0;
// Convert and simultaneously do a check to see if it's all ASCII.
UChar ored = 0;
for (auto character : string.codeUnits()) {
result[index++] = character;
ored |= character;
}
if (!(ored & 0xFF80))
return result;
}
// If it wasn't all ASCII, call the function that handles more-complex cases.
return encodeComplexUserDefined(string, handling);
}
} // namespace PAL
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