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/*
* $Id$
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
*
*/
/**
* \file BLO_readblenfile.c
* \brief This file handles the loading if .blend files
* \ingroup mainmodule
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifdef WIN32
#include <io.h> // read, open
#include "BLI_winstuff.h"
#else // ! WIN32
#include <unistd.h> // read
#endif
#include "BLO_readfile.h"
#include "BLO_readblenfile.h"
#include "BKE_blender.h"
#include "BKE_report.h"
#include "BLI_blenlib.h"
/** Magic number for the file header */
char *headerMagic = "BLENDFI";
/**
* \brief Set the version number into the array.
*
* version contains the integer number of the version
* i.e. 227
* array[1] gets set to the div of the number by 100 i.e. 2
* array[2] gets the remainder i.e. 27
*/
void BLO_setversionnumber(char array[4], int version)
{
memset(array, 0, sizeof(char)*4);
array[1] = version / 100;
array[2] = version % 100;
}
/**
* Sets version number using BLENDER_VERSION
* Function that calls the setversionnumber(char[],int) with
* the BLENDER_VERSION constant and sets the resultant array
* with the version parts.
* see BLO_setversionnumber(char[],int).
*/
void BLO_setcurrentversionnumber(char array[4])
{
BLO_setversionnumber(array, BLENDER_VERSION);
}
#ifndef O_BINARY
#define O_BINARY 0
#endif
/* Runtime reading */
static int handle_read_msb_int(int handle) {
unsigned char buf[4];
if (read(handle, buf, 4)!=4)
return -1;
else
return (buf[0]<<24) + (buf[1]<<16) + (buf[2]<<8) + (buf[3]<<0);
}
int blo_is_a_runtime(char *path) {
int res= 0, fd= open(path, O_BINARY|O_RDONLY, 0);
int datastart;
char buf[8];
if (fd==-1)
goto cleanup;
lseek(fd, -12, SEEK_END);
datastart= handle_read_msb_int(fd);
if (datastart==-1)
goto cleanup;
else if (read(fd, buf, 8)!=8)
goto cleanup;
else if (memcmp(buf, "BRUNTIME", 8)!=0)
goto cleanup;
else
res= 1;
cleanup:
if (fd!=-1)
close(fd);
return res;
}
BlendFileData *
blo_read_runtime(
char *path,
ReportList *reports)
{
BlendFileData *bfd= NULL;
int fd, actualsize, datastart;
char buf[8];
fd= open(path, O_BINARY|O_RDONLY, 0);
if (fd==-1) {
BKE_report(reports, RPT_ERROR, "Unable to open");
goto cleanup;
}
actualsize= BLI_filesize(fd);
lseek(fd, -12, SEEK_END);
datastart= handle_read_msb_int(fd);
if (datastart==-1) {
BKE_report(reports, RPT_ERROR, "Unable to read");
goto cleanup;
} else if (read(fd, buf, 8)!=8) {
BKE_report(reports, RPT_ERROR, "Unable to read");
goto cleanup;
} else if (memcmp(buf, "BRUNTIME", 8)!=0) {
BKE_report(reports, RPT_ERROR, "File is not a Blender file");
goto cleanup;
} else {
//printf("starting to read runtime from %s at datastart %d\n", path, datastart);
lseek(fd, datastart, SEEK_SET);
bfd = blo_read_blendafterruntime(fd, path, actualsize-datastart, reports);
fd= -1; // file was closed in blo_read_blendafterruntime()
}
cleanup:
if (fd!=-1)
close(fd);
return bfd;
}
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