Show dbcfile.cpp syntax highlighted
/*
* Copyright (C) 2005,2006,2007 MaNGOS <http://www.mangosproject.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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "dbcfile.h"
DBCFile::DBCFile()
{
data = NULL;
fieldsOffset = NULL;
}
bool DBCFile::Load(const char *filename, const char *fmt)
{
uint32 header;
if(data)
{
delete [] data;
data=NULL;
}
FILE * f=fopen(filename,"rb");
if(!f)return false;
fread(&header,4,1,f); // Number of records
if(header!=0x43424457)
{
//printf("not dbc file");
return false; //'WDBC'
}
fread(&recordCount,4,1,f); // Number of records
fread(&fieldCount,4,1,f); // Number of fields
fread(&recordSize,4,1,f); // Size of a record
fread(&stringSize,4,1,f); // String size
fieldsOffset = new uint32[fieldCount];
fieldsOffset[0] = 0;
for(uint32 i = 1; i < fieldCount; i++)
{
fieldsOffset[i] = fieldsOffset[i - 1];
if (fmt[i - 1] == 'b' || fmt[i - 1] == 'X') // byte fields
fieldsOffset[i] += 1;
else // 4 byte fields (int32/float/strings)
fieldsOffset[i] += 4;
}
data = new unsigned char[recordSize*recordCount+stringSize];
stringTable = data + recordSize*recordCount;
fread(data,recordSize*recordCount+stringSize,1,f);
fclose(f);
return true;
}
DBCFile::~DBCFile()
{
if(data)
delete [] data;
if(fieldsOffset)
delete [] fieldsOffset;
}
DBCFile::Record DBCFile::getRecord(size_t id)
{
assert(data);
return Record(*this, data + id*recordSize);
}
uint32 DBCFile::GetFormatRecordSize(const char * format,int32* index_pos)
{
uint32 recordsize = 0;
int32 i = -1;
for(uint32 x=0; format[x];++x)
switch(format[x])
{
case FT_FLOAT:
case FT_INT:
recordsize+=4;
break;
case FT_STRING:
recordsize+=sizeof(char*);
break;
case FT_SORT:
i=x;
break;
case FT_IND:
i=x;
recordsize+=4;
break;
case FT_BYTE:
recordsize += 1;
break;
}
if(index_pos)
*index_pos = i;
return recordsize;
}
void * DBCFile::AutoProduceData(const char * format, uint32 * records, char *&_data)
{
/*
format STRING, NA, FLOAT,NA,INT <=>
struct{
char* field0,
float field1,
int field2
}entry;
this func will generate entry[rows] data;
*/
typedef char * ptr;
//char * _data;
ptr* table;
uint32 offset=0;
if(strlen(format)!=fieldCount)
return NULL;
//get struct size and index pos
int32 i;
uint32 recordsize=GetFormatRecordSize(format,&i);
if(i>=0)
{
uint32 maxi=0;
//find max index
for(uint32 y=0;y<recordCount;y++)
{
uint32 ind=getRecord(y).getUInt (i);
if(ind>maxi)maxi=ind;
}
maxi++;
*records=maxi;
table=new ptr[maxi];
memset(table,0,maxi*sizeof(ptr));
}else
{
*records = recordCount;
table = new ptr [recordCount];
}
_data= new char[recordCount*recordsize + stringSize];
char *stringData = _data+recordCount*recordsize;
memcpy(stringData,stringTable,stringSize);
for(uint32 y =0;y<recordCount;y++)
{
//offset=0;
if(i>=0)
{
table[getRecord(y).getUInt (i)]=&_data[offset];
}else table[y]=&_data[offset];
for(uint32 x=0;x<fieldCount;x++)
switch(format[x])
{
case FT_FLOAT:
*((float*)(&_data[offset]))=getRecord(y).getFloat (x);
offset+=4;
break;
case FT_IND:
case FT_INT:
*((uint32*)(&_data[offset]))=getRecord(y).getUInt (x);
offset+=4;
break;
case FT_BYTE:
*((uint8*)(&_data[offset]))=getRecord(y).getUInt8 (x);
offset+=1;
break;
case FT_STRING:
const char * st = getRecord(y).getString(x);
*((char**)(&_data[offset]))=stringData+(st-(const char*)stringTable);
offset+=sizeof(char*);
break;
}
}
return table;
}
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