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BlockBufferedFileBinaryOutputPort.h
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BlockBufferedFileBinaryOutputPort.h
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/*
* BlockBufferedFileBinaryOutputPort.h - <file binary output port>
*
* Copyright (c) 2008 Higepon(Taro Minowa) <higepon@users.sourceforge.jp>
* Copyright (c) 2009 Kokosabu(MIURA Yasuyuki) <kokosabu@gmail.com>
*
* 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER 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.
*
* $Id$
*/
#ifndef SCHEME_BLOCK_BUFFERED_FILE_BINARY_OUTPUT_PORT_
#define SCHEME_BLOCK_BUFFERED_FILE_BINARY_OUTPUT_PORT_
#include "BufferedFileBinaryOutputPort.h"
namespace scheme {
class BlockBufferedFileBinaryOutputPort : public BufferedFileBinaryOutputPort
{
public:
BlockBufferedFileBinaryOutputPort(File* file) : BufferedFileBinaryOutputPort(file) {}
BlockBufferedFileBinaryOutputPort(ucs4string file) : BufferedFileBinaryOutputPort(file) {}
BlockBufferedFileBinaryOutputPort(ucs4string file, int openFlags) : BufferedFileBinaryOutputPort(file, openFlags) {}
virtual ~BlockBufferedFileBinaryOutputPort() {}
virtual enum bufferMode bufferMode() const
{
return BLOCK;
}
protected:
int64_t writeToBuffer(uint8_t* data, int64_t reqSize)
{
int64_t writeSize = 0;
while (writeSize < reqSize) {
MOSH_ASSERT(BUF_SIZE >= bufIdx_);
const int64_t bufDiff = BUF_SIZE - bufIdx_;
MOSH_ASSERT(reqSize > writeSize);
const int64_t sizeDiff = reqSize - writeSize;
if (bufDiff >= sizeDiff) {
moshMemcpy(buffer_+bufIdx_, data+writeSize, sizeDiff);
bufIdx_ += sizeDiff;
writeSize += sizeDiff;
} else {
moshMemcpy(buffer_+bufIdx_, data+writeSize, bufDiff);
bufIdx_ += bufDiff;
writeSize += bufDiff;
flush();
}
}
return writeSize;
}
};
} // namespace scheme
#endif // SCHEME_LINE_BUFFERED_FILE_BINARY_OUTPUT_PORT_