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130 lines
3.6 KiB
C++
130 lines
3.6 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of Beast: https://github.com/vinniefalco/Beast
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Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
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Portions of this file are from JUCE.
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Copyright (c) 2013 - Raw Material Software Ltd.
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Please visit http://www.juce.com
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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int64 beast_fileSetPosition (void* handle, int64 pos);
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//==============================================================================
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FileOutputStream::FileOutputStream (const File& f, const size_t bufferSizeToUse)
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: file (f),
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fileHandle (nullptr),
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status (Result::ok()),
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currentPosition (0),
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bufferSize (bufferSizeToUse),
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bytesInBuffer (0),
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buffer (bmax (bufferSizeToUse, (size_t) 16))
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{
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openHandle();
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}
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FileOutputStream::~FileOutputStream()
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{
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flushBuffer();
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flushInternal();
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closeHandle();
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}
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int64 FileOutputStream::getPosition()
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{
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return currentPosition;
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}
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bool FileOutputStream::setPosition (int64 newPosition)
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{
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if (newPosition != currentPosition)
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{
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flushBuffer();
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currentPosition = beast_fileSetPosition (fileHandle, newPosition);
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}
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return newPosition == currentPosition;
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}
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bool FileOutputStream::flushBuffer()
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{
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bool ok = true;
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if (bytesInBuffer > 0)
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{
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ok = (writeInternal (buffer, bytesInBuffer) == (ssize_t) bytesInBuffer);
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bytesInBuffer = 0;
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}
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return ok;
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}
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void FileOutputStream::flush()
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{
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flushBuffer();
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flushInternal();
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}
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bool FileOutputStream::write (const void* const src, const size_t numBytes)
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{
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bassert (src != nullptr && ((ssize_t) numBytes) >= 0);
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if (bytesInBuffer + numBytes < bufferSize)
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{
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memcpy (buffer + bytesInBuffer, src, numBytes);
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bytesInBuffer += numBytes;
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currentPosition += numBytes;
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}
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else
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{
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if (! flushBuffer())
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return false;
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if (numBytes < bufferSize)
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{
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memcpy (buffer + bytesInBuffer, src, numBytes);
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bytesInBuffer += numBytes;
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currentPosition += numBytes;
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}
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else
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{
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const ssize_t bytesWritten = writeInternal (src, numBytes);
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if (bytesWritten < 0)
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return false;
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currentPosition += bytesWritten;
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return bytesWritten == (ssize_t) numBytes;
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}
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}
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return true;
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}
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bool FileOutputStream::writeRepeatedByte (uint8 byte, size_t numBytes)
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{
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bassert (((ssize_t) numBytes) >= 0);
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if (bytesInBuffer + numBytes < bufferSize)
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{
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memset (buffer + bytesInBuffer, byte, numBytes);
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bytesInBuffer += numBytes;
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currentPosition += numBytes;
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return true;
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}
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return OutputStream::writeRepeatedByte (byte, numBytes);
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} |