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Diffstat (limited to 'tdefile-plugins/torrent/bdict.cpp')
-rw-r--r-- | tdefile-plugins/torrent/bdict.cpp | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/tdefile-plugins/torrent/bdict.cpp b/tdefile-plugins/torrent/bdict.cpp new file mode 100644 index 00000000..712fd526 --- /dev/null +++ b/tdefile-plugins/torrent/bdict.cpp @@ -0,0 +1,220 @@ +/* + * 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., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ +#include <tqstringlist.h> +#include <tqiodevice.h> + +#include <kdebug.h> + +#include "bbase.h" +#include "bdict.h" +#include "bstring.h" +#include "bint.h" +#include "blist.h" + +BDict::BDict (TQByteArray &dict, int start) + : m_map(), m_valid(false) +{ + ByteTape tape(dict, start); + + init (tape); +} + +BDict::BDict (ByteTape &tape) + : m_map(), m_valid (false) +{ + init (tape); +} + +void BDict::init (ByteTape &tape) +{ + if (*tape != 'd') + { + kdDebug(7034) << "This isn't a dictionary!" << endl; + return; // This isn't a dictionary + } + + tape++; + + // We need to loop and read in a string, then read in some data + while (*tape != 'e') + { + BBase *temp_item = 0; + + // Read in string + KSharedPtr<BString> str (new BString (tape)); + + // Ensure str will be automatically deleted + if (!str || !str->isValid()) + { + kdDebug(7034) << (str ? "Invalid string" : "Unable to read String!") << endl; + return; + } + + // Read in data + switch (*tape) + { + case 'l': + temp_item = new BList (tape); + break; + + case 'i': + temp_item = new BInt (tape); + break; + + case 'd': + temp_item = new BDict (tape); + break; + + default: + // Hopefully this is a string + temp_item = new BString (tape); + } + + if (!temp_item || !temp_item->isValid()) + { + kdDebug(7034) << (temp_item ? "Invalid item!" + : "Unable to create keyed data!") << endl; + return; + } + + m_map.insert(str->get_string(), temp_item); + } + + // Move past the 'e' + tape++; + + // Let the map delete the items + m_map.setAutoDelete (true); + + // Oh yeah, we're valid now, too. :-) + m_valid = true; +} + +BDict::~BDict () +{ + // TQDict will take care of deleting each entry that + // it holds. +} + +BInt *BDict::findInt (const char *key) +{ + BBase *base = find(key); + + if (base && base->type_id() == bInt) + return dynamic_cast<BInt*>(base); + + return 0; +} + +BList *BDict::findList (const char *key) +{ + BBase *base = find(key); + + if (base && base->type_id() == bList) + return dynamic_cast<BList*>(base); + + return 0; +} + +BDict *BDict::findDict (const char *key) +{ + BBase *base = find(key); + + if (base && base->type_id() == bDict) + return dynamic_cast<BDict*>(base); + + return 0; +} + +BString *BDict::findStr (const char *key) +{ + BBase *base = find(key); + + if (base && base->type_id() == bString) + return dynamic_cast<BString*>(base); + + return 0; +} + +bool BDict::writeToDevice(TQIODevice &device) +{ + if (!isValid()) + return false; + + const char *d_str = "d"; + const char *e_str = "e"; + TQ_LONG written = 0, result = 0; + + written = device.writeBlock (d_str, 1); + while (written < 1) + { + if (written < 0 || result < 0) + return false; + + result = device.writeBlock (d_str, 1); + written += result; + } + + // Strings are supposed to be written in the dictionary such that + // the keys are in sorted order. TQDictIterator doesn't support an + // ordering, so we have to get a list of all the keys, sort it, and + // then go by the list. + + BBaseHashIterator iter (m_map); + TQStringList key_list; + + for ( ; iter.current(); ++iter) + key_list.append(iter.currentKey()); + + key_list.sort(); + + TQStringList::Iterator key_iter; + for (key_iter = key_list.begin(); key_iter != key_list.end(); ++key_iter) + { + TQCString utfString = (*key_iter).utf8(); + TQString str = TQString("%1:").arg(utfString.size() - 1); + + TQCString lenString = str.utf8(); + + // Write out length of key + device.writeBlock(lenString.data(), lenString.size() - 1); + + // Write out actual key + device.writeBlock(utfString.data(), utfString.size() - 1); + + // Write out the key's data + BBase *base = m_map.find(*key_iter); + if (!base->writeToDevice (device)) + return false; + } + + written = device.writeBlock (e_str, 1); + while ((uint) written < 1) + { + if (written < 0 || result < 0) + return false; + + result = device.writeBlock (e_str, 1); + written += result; + } + + return true; +} + +// vim: set et sw=4 ts=4: |