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/*
* Copyright (C) 2011 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. AND ITS CONTRIBUTORS ``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 ITS 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 "ArgumentCoders.h"
#include "DataReference.h"
#include <wtf/text/CString.h>
#include <wtf/text/WTFString.h>
namespace CoreIPC {
void ArgumentCoder<AtomicString>::encode(ArgumentEncoder& encoder, const AtomicString& atomicString)
{
encoder << atomicString.string();
}
bool ArgumentCoder<AtomicString>::decode(ArgumentDecoder& decoder, AtomicString& atomicString)
{
String string;
if (!decoder.decode(string))
return false;
atomicString = string;
return true;
}
void ArgumentCoder<CString>::encode(ArgumentEncoder& encoder, const CString& string)
{
// Special case the null string.
if (string.isNull()) {
encoder << std::numeric_limits<uint32_t>::max();
return;
}
uint32_t length = string.length();
encoder << length;
encoder.encodeFixedLengthData(reinterpret_cast<const uint8_t*>(string.data()), length, 1);
}
bool ArgumentCoder<CString>::decode(ArgumentDecoder& decoder, CString& result)
{
uint32_t length;
if (!decoder.decode(length))
return false;
if (length == std::numeric_limits<uint32_t>::max()) {
// This is the null string.
result = CString();
return true;
}
// Before allocating the string, make sure that the decoder buffer is big enough.
if (!decoder.bufferIsLargeEnoughToContain<char>(length)) {
decoder.markInvalid();
return false;
}
char* buffer;
CString string = CString::newUninitialized(length, buffer);
if (!decoder.decodeFixedLengthData(reinterpret_cast<uint8_t*>(buffer), length, 1))
return false;
result = string;
return true;
}
void ArgumentCoder<String>::encode(ArgumentEncoder& encoder, const String& string)
{
// Special case the null string.
if (string.isNull()) {
encoder << std::numeric_limits<uint32_t>::max();
return;
}
uint32_t length = string.length();
bool is8Bit = string.is8Bit();
encoder << length << is8Bit;
if (is8Bit)
encoder.encodeFixedLengthData(reinterpret_cast<const uint8_t*>(string.characters8()), length * sizeof(LChar), __alignof(LChar));
else
encoder.encodeFixedLengthData(reinterpret_cast<const uint8_t*>(string.characters16()), length * sizeof(UChar), __alignof(UChar));
}
template <typename CharacterType>
static inline bool decodeStringText(ArgumentDecoder& decoder, uint32_t length, String& result)
{
// Before allocating the string, make sure that the decoder buffer is big enough.
if (!decoder.bufferIsLargeEnoughToContain<CharacterType>(length)) {
decoder.markInvalid();
return false;
}
CharacterType* buffer;
String string = String::createUninitialized(length, buffer);
if (!decoder.decodeFixedLengthData(reinterpret_cast<uint8_t*>(buffer), length * sizeof(CharacterType), __alignof(CharacterType)))
return false;
result = string;
return true;
}
bool ArgumentCoder<String>::decode(ArgumentDecoder& decoder, String& result)
{
uint32_t length;
if (!decoder.decode(length))
return false;
if (length == std::numeric_limits<uint32_t>::max()) {
// This is the null string.
result = String();
return true;
}
bool is8Bit;
if (!decoder.decode(is8Bit))
return false;
if (is8Bit)
return decodeStringText<LChar>(decoder, length, result);
return decodeStringText<UChar>(decoder, length, result);
}
} // namespace CoreIPC
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