BodyReader.cpp

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00001 /*
00002 
00003 Copyright (C) 2005-2007 by Peter Dimov.
00004 
00005 This file is part of Calitko (http://www.calitko.org).
00006 
00007 Calitko is free software; you can redistribute it and/or modify
00008 it under the terms of the GNU General Public License as published by
00009 the Free Software Foundation; either version 2 of the License, or
00010 (at your option) any later version.
00011 
00012 Calitko is distributed in the hope that it will be useful,
00013 but WITHOUT ANY WARRANTY; without even the implied warranty of
00014 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015 GNU General Public License for more details.
00016 
00017 You should have received a copy of the GNU General Public License
00018 along with Calitko; if not, write to the Free Software
00019 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
00020 
00021 */
00022 
00023 #include "Qt.h"
00024 #include "BodyReader.h"
00025 #include "Imports.cpp"
00026 
00027 using namespace Http;
00028 
00029 BodyReader::BodyReader (Connection *connection)
00030  :  p()
00031 {
00032     p.connection    = connection;
00033     p.bytesRead     = 0;
00034     p.bodySize      = 0;
00035 }
00036 
00037 BodyReader::~BodyReader()
00038 {
00039 }
00040 
00041 void BodyReader::startReading (QIODevice *file, qint64 bodySize)
00042 {
00043     p.file      = file;
00044     p.bodySize  = bodySize;
00045     p.bytesRead = 0;
00046 
00047     QMetaObject::invokeMethod (this, "readyRead", Qt::QueuedConnection);
00048 }
00049 
00050 void BodyReader::readyRead()
00051 {
00052     if (p.bodySize <= p.bytesRead)
00053         return;
00054 
00055     qint64 read = 0;
00056     do {
00057         qint64 bytesLeft = p.bodySize - p.bytesRead;
00058         if (bytesLeft > BufferSize)
00059             read = BufferSize;
00060         else
00061             read = bytesLeft;
00062         read = p.connection->read (p.buffer, read);
00063         if (read > 0) {
00064             p.bytesRead += read;
00065             qint64 written = p.file->write (p.buffer, read);
00066             if (written != read) {
00067                 emit writeError(); // should always be able to write to file!
00068             }
00069             if (p.bytesRead == p.bodySize) {
00070                 emit bodyRead();
00071             }
00072         }
00073     } while (read > 0);
00074 }