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/**
*
* ***** 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.
*
* Contributor(s): Campbell Barton <ideasman42@gmail.com>
*
* ***** END GPL LICENSE BLOCK *****
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include "BKE_pointcache.h"
#include "BKE_utildefines.h"
#include "BKE_global.h"
#include "BKE_library.h"
#include "BLI_blenlib.h"
#include "BKE_utildefines.h"
/* needed for directory lookup */
#ifndef WIN32
#include <dirent.h>
#else
#include "BLI_winstuff.h"
#endif
/* Takes an Object ID and returns a unique name
- id: object id
- cfra: frame for the cache, can be negative
- stack_index: index in the modifier stack. we can have cache for more then one stack_index
*/
static int ptcache_path(char *filename)
{
char dir[FILE_MAX], file[FILE_MAX]; /* we dont want the dir, only the file */
int i;
BLI_split_dirfile(G.sce, dir, file);
i = strlen(file);
/* remove .blend */
if (i > 6)
file[i-6] = '\0';
sprintf(filename, PTCACHE_PATH"%s/", file); /* add blend file name to pointcache dir */
BLI_convertstringcode(filename, G.sce, 0);
return strlen(filename);
}
int BKE_ptcache_id_filename(struct ID *id, char *filename, int cfra, int stack_index, short do_path, short do_ext)
{
int len=0;
char *idname;
char *newname;
filename[0] = '\0';
newname = filename;
if (!G.relbase_valid) return 0; /* save blend fiel before using pointcache */
/* start with temp dir */
if (do_path) {
len = ptcache_path(filename);
newname += len;
}
idname = (id->name+2);
/* convert chars to hex so they are always a valid filename */
while('\0' != *idname) {
sprintf(newname, "%02X", (char)(*idname++));
newname+=2;
len += 2;
}
if (do_ext) {
sprintf(newname, "_%06d_%02d"PTCACHE_EXT, cfra, stack_index); /* always 6 chars */
len += 16;
}
return len; /* make sure the above string is always 16 chars */
}
/* youll need to close yourself after! */
FILE *BKE_ptcache_id_fopen(struct ID *id, char mode, int cfra, int stack_index)
{
/* mode is same as fopen's modes */
FILE *fp = NULL;
char filename[(FILE_MAXDIR+FILE_MAXFILE)*2];
if (!G.relbase_valid) return NULL; /* save blend fiel before using pointcache */
BKE_ptcache_id_filename(id, filename, cfra, stack_index, 1, 1);
if (mode=='r') {
if (!BLI_exists(filename)) {
return NULL;
}
fp = fopen(filename, "rb");
} else if (mode=='w') {
BLI_make_existing_file(filename); /* will create the dir if needs be, same as //textures is created */
fp = fopen(filename, "wb");
}
if (!fp) {
return NULL;
}
return fp;
}
/* youll need to close yourself after!
* mode,
*/
void BKE_ptcache_id_clear(struct ID *id, char mode, int cfra, int stack_index)
{
int len; /* store the length of the string */
/* mode is same as fopen's modes */
DIR *dir;
struct dirent *de;
char path[FILE_MAX];
char filename[(FILE_MAXDIR+FILE_MAXFILE)*2];
char path_full[(FILE_MAXDIR+FILE_MAXFILE)*2];
if (!G.relbase_valid) return; /* save blend fiel before using pointcache */
/* clear all files in the temp dir with the prefix of the ID and the ".bphys" suffix */
switch (mode) {
case PTCACHE_CLEAR_ALL:
case PTCACHE_CLEAR_BEFORE:
case PTCACHE_CLEAR_AFTER:
ptcache_path(path);
len = BKE_ptcache_id_filename(id, filename, cfra, stack_index, 0, 0); /* no path */
dir = opendir(path);
if (dir==NULL)
return;
while ((de = readdir(dir)) != NULL) {
if (strstr(de->d_name, PTCACHE_EXT)) { /* do we have the right extension?*/
if (strncmp(filename, de->d_name, len ) == 0) { /* do we have the right prefix */
if (mode == PTCACHE_CLEAR_ALL) {
BLI_join_dirfile(path_full, path, de->d_name);
BLI_delete(path_full, 0, 0);
} else {
/* read the number of the file */
int frame, len2 = strlen(de->d_name);
char num[7];
if (len2 > 15) { /* could crash if trying to copy a string out of this range*/
strncpy(num, de->d_name + (strlen(de->d_name) - 15), 6);
frame = atoi(num);
if((mode==PTCACHE_CLEAR_BEFORE && frame < cfra) ||
(mode==PTCACHE_CLEAR_AFTER && frame > cfra) ) {
BLI_join_dirfile(path_full, path, de->d_name);
BLI_delete(path_full, 0, 0);
}
}
}
}
}
}
closedir(dir);
break;
case PTCACHE_CLEAR_FRAME:
len = BKE_ptcache_id_filename(id, filename, cfra, stack_index, 1, 1); /* no path */
BLI_delete(filename, 0, 0);
break;
}
return;
}
int BKE_ptcache_id_exist(struct ID *id, int cfra, int stack_index)
{
char filename[(FILE_MAXDIR+FILE_MAXFILE)*2];
BKE_ptcache_id_filename(id, filename, cfra, stack_index, 1, 1);
return BLI_exists(filename);
}
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