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127 lines
3.1 KiB
127 lines
3.1 KiB
/*
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* Copyright (c) 2003, 2004 Michael Pyne <michael.pyne@kdemail.net>
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*
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* This software is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this library; see the file COPYING.
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* If not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <tqcstring.h>
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#include <tqiodevice.h>
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#include <kdebug.h>
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#include "bstring.h"
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#include "bytetape.h"
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BString::BString (TQByteArray &dict, int start) :
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m_data(), m_valid(false)
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{
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ByteTape tape (dict, start);
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init (tape);
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}
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BString::BString (ByteTape &tape)
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: m_data(), m_valid(false)
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{
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init (tape);
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}
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// The reason we don't store stuff in a TQString is because BitTorrent
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// b-encoded strings may contain zeroes within the string, which makes
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// a BString more of a buffer than a true string.
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void BString::init (ByteTape &tape)
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{
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TQByteArray &dict(tape.data());
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if (dict.find(':', tape.pos()) == -1)
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{
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kdDebug(7034) << "Can't find : for string!" << endl;
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return;
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}
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// Copy the part from start to :, as it will be a number
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// That number is the number of characters to read
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int length = dict.find(':', tape.pos()) - tape.pos();
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char *ptr = dict.data();
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ptr += tape.pos();
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TQByteArray buffer (length + 1);
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tqmemmove (buffer.data(), ptr, length);
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buffer[length] = 0;
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TQString numberString (buffer);
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bool a_isValid;
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ulong len = numberString.toULong (&a_isValid);
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if (!a_isValid)
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{
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kdDebug(7034) << "Invalid string length!" << endl;
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return;
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}
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// Now that we have the length, we need to advance the tape
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// past the colon
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tape += length; // Move to colon
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if (*tape != ':')
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{
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// Sanity check
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kdError(7034) << "SANITY CHECK FAILED. *tape != ':'!" << endl;
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return;
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}
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tape++; // Move past colon
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// Time to copy the data
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char *textBuffer = tape.at(tape.pos());
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if (!m_data.resize(len + 1))
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return;
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tqmemmove (m_data.data(), textBuffer, len);
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m_data[len] = 0; // Null terminate for convienience
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tape += len;
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m_valid = true;
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}
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BString::~BString ()
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{
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}
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bool BString::writeToDevice(TQIODevice &device)
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{
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if (!m_valid)
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return false;
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TQString str = TQString("%1:").
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arg(get_len());
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TQCString utfString = str.utf8();
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/* Don't write null terminator */
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device.writeBlock (utfString.data(), utfString.size() - 1);
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// Output the actual data
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device.writeBlock (m_data.data(), m_data.size() - 1);
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// Done
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return true;
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}
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bool BString::setValue (const TQString &str)
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{
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m_data = str.utf8();
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return true;
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}
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