flutter_flutter/engine/wtf/text/TextCodecUserDefined.cpp
Eric Seidel e0fd75b5ab Make absolute and sort all Sky headers
This caused us to lose our gn check certification. :(

Turns out gn check was just ignoring all the header
paths it didn't understand and so gn check passing
for sky wasn't meaning much.  I tried to straighten
out some of the mess in this CL, but its going to take
several more rounds of massaging before gn check
passes again.  On the bright side (almost) all of
our headers are absolute now.  Turns out my script
(attached to the bug) didn't notice ../ includes
but I'll fix that in the next patch.

R=abarth@chromium.org
BUG=435361

Review URL: https://codereview.chromium.org/746023002
2014-11-20 17:42:05 -08:00

124 lines
4.4 KiB
C++

/*
* Copyright (C) 2007, 2008 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 COMPUTER, 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 COMPUTER, 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 "sky/engine/config.h"
#include "sky/engine/wtf/text/TextCodecUserDefined.h"
#include "sky/engine/wtf/PassOwnPtr.h"
#include "sky/engine/wtf/text/CString.h"
#include "sky/engine/wtf/text/StringBuffer.h"
#include "sky/engine/wtf/text/StringBuilder.h"
#include "sky/engine/wtf/text/WTFString.h"
namespace WTF {
void TextCodecUserDefined::registerEncodingNames(EncodingNameRegistrar registrar)
{
registrar("x-user-defined", "x-user-defined");
}
static PassOwnPtr<TextCodec> newStreamingTextDecoderUserDefined(const TextEncoding&, const void*)
{
return adoptPtr(new TextCodecUserDefined);
}
void TextCodecUserDefined::registerCodecs(TextCodecRegistrar registrar)
{
registrar("x-user-defined", newStreamingTextDecoderUserDefined, 0);
}
String TextCodecUserDefined::decode(const char* bytes, size_t length, FlushBehavior, bool, bool&)
{
StringBuilder result;
result.reserveCapacity(length);
for (size_t i = 0; i < length; ++i) {
signed char c = bytes[i];
result.append(static_cast<UChar>(c & 0xF7FF));
}
return result.toString();
}
template<typename CharType>
static CString encodeComplexUserDefined(const CharType* characters, size_t length, UnencodableHandling handling)
{
Vector<char> result(length);
char* bytes = result.data();
size_t resultLength = 0;
for (size_t i = 0; i < length; ) {
UChar32 c;
U16_NEXT(characters, i, length, c);
signed char signedByte = c;
if ((signedByte & 0xF7FF) == c)
bytes[resultLength++] = signedByte;
else {
// No way to encode this character with x-user-defined.
UnencodableReplacementArray replacement;
int replacementLength = TextCodec::getUnencodableReplacement(c, handling, replacement);
result.grow(resultLength + replacementLength + length - i);
bytes = result.data();
memcpy(bytes + resultLength, replacement, replacementLength);
resultLength += replacementLength;
}
}
return CString(bytes, resultLength);
}
template<typename CharType>
CString TextCodecUserDefined::encodeCommon(const CharType* characters, size_t length, UnencodableHandling handling)
{
char* bytes;
CString result = CString::newUninitialized(length, bytes);
// Convert the string a fast way and simultaneously do an efficient check to see if it's all ASCII.
UChar ored = 0;
for (size_t i = 0; i < length; ++i) {
UChar c = characters[i];
bytes[i] = c;
ored |= c;
}
if (!(ored & 0xFF80))
return result;
// If it wasn't all ASCII, call the function that handles more-complex cases.
return encodeComplexUserDefined(characters, length, handling);
}
CString TextCodecUserDefined::encode(const UChar* characters, size_t length, UnencodableHandling handling)
{
return encodeCommon(characters, length, handling);
}
CString TextCodecUserDefined::encode(const LChar* characters, size_t length, UnencodableHandling handling)
{
return encodeCommon(characters, length, handling);
}
} // namespace WTF