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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commitbcb704366cb5e333a626c18c308c7e0448a8e69f (patch)
treef0d6ab7d78ecdd9207cf46536376b44b91a1ca71 /kfile-plugins/torrent/bint.cpp
downloadtdenetwork-bcb704366cb5e333a626c18c308c7e0448a8e69f.tar.gz
tdenetwork-bcb704366cb5e333a626c18c308c7e0448a8e69f.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdenetwork@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
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diff --git a/kfile-plugins/torrent/bint.cpp b/kfile-plugins/torrent/bint.cpp
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+/*
+ * Copyright (c) 2003, 2004 Michael Pyne <michael.pyne@kdemail.net>
+ *
+ * This software is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; see the file COPYING.
+ * If not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+#include <qstring.h>
+#include <qcstring.h>
+#include <qiodevice.h>
+
+#include "bytetape.h"
+#include "bint.h"
+
+// A bencoded int is (approximately) as follows:
+// i(\d)+e
+BInt::BInt (QByteArray &dict, int start)
+ : m_value (0), m_valid(false)
+{
+ ByteTape tape (dict, start);
+ init (tape);
+}
+
+BInt::BInt (ByteTape &tape)
+ : m_value(0), m_valid(false)
+{
+ init(tape);
+}
+
+void BInt::init (ByteTape &tape)
+{
+ if (*tape != 'i')
+ return;
+
+ tape ++; // Move to start of digits
+
+ QByteArray &dict (tape.data());
+ if (dict.find('e', tape.pos()) == -1)
+ return;
+
+ // Copy the part from the start to the e. The values in-between
+ // should be digits, perhaps preceded by a negative sign.
+ int length = dict.find('e', tape.pos()) - tape.pos();
+ char *ptr = dict.data(); // Get start of buffer
+ ptr += tape.pos(); // Advance to current position in tape
+
+ // Allocate temporary data buffer
+ QByteArray buffer(length + 1);
+
+ qmemmove (buffer.data(), ptr, length);
+ buffer[length] = 0; // Null-terminate
+
+ QString numberString (buffer);
+ bool a_isValid; // We want to make sure the string is a valid number
+
+ m_value = numberString.toLongLong(&a_isValid);
+
+ tape += length; // Move to 'e'
+ tape ++; // Move to next char
+
+ m_valid = a_isValid; // Now we're good, if it was a number
+}
+
+BInt::~BInt()
+{
+ /* Nothing yet */
+}
+
+bool BInt::writeToDevice (QIODevice &device)
+{
+ if (!m_valid)
+ return false;
+
+ /* Write out i234e, and such */
+ QString str = QString("i%1e").
+ arg (m_value);
+
+ Q_LONG written = 0, result = 0;
+ written = device.writeBlock (str.latin1(), str.length());
+ while ((uint) written < str.length())
+ {
+ if (written < 0 || result < 0)
+ return false;
+
+ result = device.writeBlock(str.latin1() + written,
+ str.length() - written);
+ written += result;
+ }
+
+ return true;
+}
+
+// vim: set et ts=4 sw=4: