src/shared/Database/dbcfile.h

   1 /*
   2  * Copyright (C) 2005-2008 MaNGOS <http://getmangos.com/>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19 #ifndef DBCFILE_H
  20 #define DBCFILE_H
  21 #include "Platform/Define.h"
  22 #include "Utilities/ByteConverter.h"
  23 #include <cassert>
  24
  25 enum
  26 {
  27     FT_NA='x',                                              //not used or unknown, 4 byte size
  28     FT_NA_BYTE='X',                                         //not used or unknown, byte
  29     FT_STRING='s',                                          //char*
  30     FT_FLOAT='f',                                           //float
  31     FT_INT='i',                                             //uint32
  32     FT_BYTE='b',                                            //uint8
  33     FT_SORT='d',                                            //sorted by this field, field is not included
  34     FT_IND='n',                                             //the same,but parsed to data
  35     FT_LOGIC='l'                                            //Logical (boolean)
  36 };
  37
  38 class DBCFile
  39 {
  40     public:
  41         DBCFile();
  42         ~DBCFile();
  43
  44         bool Load(const char *filename, const char *fmt);
  45
  46         class Record
  47         {
  48             public:
  49                 float getFloat(size_t field) const
  50                 {
  51                     assert(field < file.fieldCount);
  52                     float val = *reinterpret_cast<float*>(offset+file.GetOffset(field));
  53                     EndianConvert(val);
  54                     return val;
  55                 }
  56                 uint32 getUInt(size_t field) const
  57                 {
  58                     assert(field < file.fieldCount);
  59                     uint32 val = *reinterpret_cast<uint32*>(offset+file.GetOffset(field));
  60                     EndianConvert(val);
  61                     return val;
  62                 }
  63                 uint8 getUInt8(size_t field) const
  64                 {
  65                     assert(field < file.fieldCount);
  66                     return *reinterpret_cast<uint8*>(offset+file.GetOffset(field));
  67                 }
  68
  69                 const char *getString(size_t field) const
  70                 {
  71                     assert(field < file.fieldCount);
  72                     size_t stringOffset = getUInt(field);
  73                     assert(stringOffset < file.stringSize);
  74                     return reinterpret_cast<char*>(file.stringTable + stringOffset);
  75                 }
  76
  77             private:
  78                 Record(DBCFile &file_, unsigned char *offset_): offset(offset_), file(file_) {}
  79                 unsigned char *offset;
  80                 DBCFile &file;
  81
  82                 friend class DBCFile;
  83
  84         };
  85
  86         // Get record by id
  87         Record getRecord(size_t id);
  88         /// Get begin iterator over records
  89
  90         uint32 GetNumRows() const { return recordCount;}
  91         uint32 GetCols() const { return fieldCount; }
  92         uint32 GetOffset(size_t id) const { return (fieldsOffset != NULL && id < fieldCount) ? fieldsOffset[id] : 0; }
  93         bool IsLoaded() {return (data!=NULL);}
  94         char* AutoProduceData(const char* fmt, uint32& count, char**& indexTable);
  95         char* AutoProduceStrings(const char* fmt, char* dataTable);
  96         static uint32 GetFormatRecordSize(const char * format, int32 * index_pos = NULL);
  97     private:
  98
  99         uint32 recordSize;
 100         uint32 recordCount;
 101         uint32 fieldCount;
 102         uint32 stringSize;
 103         uint32 *fieldsOffset;
 104         unsigned char *data;
 105         unsigned char *stringTable;
 106 };
 107 #endif