dbcfile.h

Go to the documentation of this file.

/*
 * Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
 * Copyright (C) 2005-2011 MaNGOS <http://getmangos.com/>
 *
 * This program 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 program 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 program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef DBCFILE_H
#define DBCFILE_H
#include <cassert>
#include <string>
#include "CascLib.h"

class DBCFile
{
 public:
 DBCFile(HANDLE mpq, const char* filename);
 ~DBCFile();

 // Open database. It must be openened before it can be used.
 bool open();

 // Database exceptions
 class Exception
 {
 public:
 Exception(const std::string &message) : message(message) { }
 virtual ~Exception() { }
 const std::string &getMessage() { return message; }
 private:
 std::string message;
 };

 class NotFound: public Exception
 {
 public:
 NotFound(): Exception("Key was not found") { }
 };

 // Iteration over database
 class Iterator;
 class Record
 {
 public:
 float getFloat(size_t field) const
 {
 assert(field < file._fieldCount);
 return *reinterpret_cast<float*>(offset + field * 4);
 }

 unsigned int getUInt(size_t field) const
 {
 assert(field < file._fieldCount);
 return *reinterpret_cast<unsigned int*>(offset + field * 4);
 }

 int getInt(size_t field) const
 {
 assert(field < file._fieldCount);
 return *reinterpret_cast<int*>(offset + field * 4);
 }

 char const* getString(size_t field) const
 {
 assert(field < file._fieldCount);
 size_t stringOffset = getUInt(field);
 assert(stringOffset < file._stringSize);
 return reinterpret_cast<char*>(file._stringTable + stringOffset);
 }

 private:
 Record(DBCFile& file, unsigned char* offset): file(file), offset(offset) {}
 DBCFile& file;
 unsigned char* offset;

 friend class DBCFile;
 friend class DBCFile::Iterator;

 Record& operator=(Record const&);
 Record(Record const& right) : file(right.file), offset(right.offset)
 {
 }
 };
 class Iterator
 {
 public:
 Iterator(DBCFile &file, unsigned char* offset) : record(file, offset) { }

 Iterator(Iterator const& right) : record(right.record)
 {
 }

 Iterator& operator++()
 {
 record.offset += record.file._recordSize;
 return *this;
 }

 Record const& operator*() const { return record; }
 Record const* operator->() const { return &record; }

 bool operator==(Iterator const& b) const
 {
 return record.offset == b.record.offset;
 }

 bool operator!=(Iterator const& b) const
 {
 return record.offset != b.record.offset;
 }

 Iterator& operator=(Iterator const& right)
 {
 record.offset = right.record.offset;
 return *this;
 }
 private:
 Record record;

 };

 // Get record by id
 Record getRecord(size_t id);
 Iterator begin();
 Iterator end();
 size_t getRecordCount() const { return _recordCount; }
 size_t getFieldCount() const { return _fieldCount; }
 size_t getMaxId();

 private:
 HANDLE _mpq;
 const char* _filename;
 HANDLE _file;
 size_t _recordSize;
 size_t _recordCount;
 size_t _fieldCount;
 size_t _stringSize;
 unsigned char *_data;
 unsigned char* _stringTable;
};

#endif