DB2StorageLoader.h

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/*
 * Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
 *
 * 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 DB2_FILE_LOADER_H
#define DB2_FILE_LOADER_H

#include "Define.h"
#include "Utilities/ByteConverter.h"
#include "Implementation/HotfixDatabase.h"
#include <cassert>
#include <list>

class TC_SHARED_API DB2FileLoader
{
 public:
 DB2FileLoader();
 ~DB2FileLoader();

 bool Load(const char *filename, const char *fmt);

 class Record
 {
 public:
 float getFloat(size_t field) const
 {
 assert(field < file.fieldCount);
 float val = *reinterpret_cast<float*>(offset + file.GetOffset(field));
 EndianConvert(val);
 return val;
 }
 uint32 getUInt(size_t field) const
 {
 assert(field < file.fieldCount);
 uint32 val = *reinterpret_cast<uint32*>(offset + file.GetOffset(field));
 EndianConvert(val);
 return val;
 }
 uint8 getUInt8(size_t field) const
 {
 assert(field < file.fieldCount);
 return *reinterpret_cast<uint8*>(offset + file.GetOffset(field));
 }
 uint64 getUInt64(size_t field) const
 {
 assert(field < file.fieldCount);
 uint64 val = *reinterpret_cast<uint64*>(offset + file.GetOffset(field));
 EndianConvert(val);
 return val;
 }
 const char *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(DB2FileLoader &file_, unsigned char *offset_): offset(offset_), file(file_) {}
 unsigned char *offset;
 DB2FileLoader &file;

 friend class DB2FileLoader;
 };

 // Get record by id
 Record getRecord(size_t id);

 uint32 GetNumRows() const { return recordCount;}
 uint32 GetCols() const { return fieldCount; }
 uint32 GetOffset(size_t id) const { return (fieldsOffset != NULL && id < fieldCount) ? fieldsOffset[id] : 0; }
 uint32 GetHash() const { return tableHash; }
 bool IsLoaded() const { return (data != NULL); }
 char* AutoProduceData(const char* fmt, uint32& count, char**& indexTable);
 char* AutoProduceStringsArrayHolders(const char* fmt, char* dataTable);
 char* AutoProduceStrings(const char* fmt, char* dataTable, uint32 locale);
 static uint32 GetFormatRecordSize(const char * format, int32 * index_pos = NULL);
 static uint32 GetFormatStringFieldCount(const char * format);
 static uint32 GetFormatLocalizedStringFieldCount(const char * format);
private:
 char const* fileName;

 uint32 recordSize;
 uint32 recordCount;
 uint32 fieldCount;
 uint32 stringSize;
 uint32 *fieldsOffset;
 unsigned char *data;
 unsigned char *stringTable;

 // WDB2 / WCH2 fields
 uint32 tableHash; // WDB2
 uint32 build; // WDB2

 int unk1; // WDB2 (Unix time in WCH2)
 int minIndex; // WDB2
 int maxIndex; // WDB2 (index table)
 int localeMask; // WDB2
 int unk5; // WDB2
};

class TC_SHARED_API DB2DatabaseLoader
{
public:
 explicit DB2DatabaseLoader(std::string const& storageName) : _storageName(storageName) { }

 char* Load(const char* format, HotfixDatabaseStatements preparedStatement, uint32& records, char**& indexTable, char*& stringHolders, std::list<char*>& stringPool);
 void LoadStrings(const char* format, HotfixDatabaseStatements preparedStatement, uint32 locale, char**& indexTable, std::list<char*>& stringPool);
 static char* AddString(char const** holder, std::string const& value);

private:
 std::string _storageName;
};

#endif