1 files changed, 104 insertions, 0 deletions
diff --git a/kfile-plugins/torrent/bint.cpp b/kfile-plugins/torrent/bint.cpp
new file mode 100644
index 00000000..8f273e86
--- /dev/null
+++ b/kfile-plugins/torrent/bint.cpp
@@ -0,0 +1,104 @@
+/*
+ * 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: