Merged changes in the trunk up to revision 30397.
[blender.git] / source / blender / blenloader / intern / readfile.c
1 /*
2  * $Id$
3  *
4  * ***** BEGIN GPL LICENSE BLOCK *****
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License
8  * as published by the Free Software Foundation; either version 2
9  * of the License, or (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software Foundation,
18  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
19  *
20  * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
21  * All rights reserved.
22  *
23  *
24  * Contributor(s): Blender Foundation
25  *
26  * ***** END GPL LICENSE BLOCK *****
27  *
28  */
29
30 #include "zlib.h"
31
32 #include <limits.h>
33 #include <stdio.h> // for printf fopen fwrite fclose sprintf FILE
34 #include <stdlib.h> // for getenv atoi
35 #include <stddef.h> // for offsetof
36 #include <fcntl.h> // for open
37 #include <string.h> // for strrchr strncmp strstr
38 #include <math.h> // for fabs
39
40 #ifndef WIN32
41         #include <unistd.h> // for read close
42         #include <sys/param.h> // for MAXPATHLEN
43 #else
44         #include <io.h> // for open close read
45 #include "winsock2.h"
46 #include "BLI_winstuff.h"
47 #endif
48
49 #include "DNA_anim_types.h"
50 #include "DNA_action_types.h"
51 #include "DNA_armature_types.h"
52 #include "DNA_ID.h"
53 #include "DNA_actuator_types.h"
54 #include "DNA_boid_types.h"
55 #include "DNA_brush_types.h"
56 #include "DNA_camera_types.h"
57 #include "DNA_cloth_types.h"
58 #include "DNA_color_types.h"
59 #include "DNA_controller_types.h"
60 #include "DNA_constraint_types.h"
61 #include "DNA_curve_types.h"
62 #include "DNA_customdata_types.h"
63 #include "DNA_effect_types.h"
64 #include "DNA_fileglobal_types.h"
65 #include "DNA_genfile.h"
66 #include "DNA_group_types.h"
67 #include "DNA_gpencil_types.h"
68 #include "DNA_ipo_types.h"
69 #include "DNA_image_types.h"
70 #include "DNA_key_types.h"
71 #include "DNA_lattice_types.h"
72 #include "DNA_lamp_types.h"
73 #include "DNA_meta_types.h"
74 #include "DNA_material_types.h"
75 #include "DNA_mesh_types.h"
76 #include "DNA_meshdata_types.h"
77 #include "DNA_modifier_types.h"
78 #include "DNA_nla_types.h"
79 #include "DNA_node_types.h"
80 #include "DNA_object_types.h"
81 #include "DNA_object_force.h"
82 #include "DNA_object_fluidsim.h" // NT
83 #include "DNA_outliner_types.h"
84 #include "DNA_object_force.h"
85 #include "DNA_packedFile_types.h"
86 #include "DNA_particle_types.h"
87 #include "DNA_property_types.h"
88 #include "DNA_text_types.h"
89 #include "DNA_view3d_types.h"
90 #include "DNA_screen_types.h"
91 #include "DNA_sensor_types.h"
92 #include "DNA_sdna_types.h"
93 #include "DNA_scene_types.h"
94 #include "DNA_sequence_types.h"
95 #include "DNA_smoke_types.h"
96 #include "DNA_sound_types.h"
97 #include "DNA_space_types.h"
98 #include "DNA_texture_types.h"
99 #include "DNA_userdef_types.h"
100 #include "DNA_vfont_types.h"
101 #include "DNA_world_types.h"
102 #include "DNA_windowmanager_types.h"
103
104 #include "MEM_guardedalloc.h"
105 #include "BLI_blenlib.h"
106 #include "BLI_math.h"
107
108 #include "BKE_anim.h"
109 #include "BKE_action.h"
110 #include "BKE_armature.h"
111 #include "BKE_brush.h"
112 #include "BKE_colortools.h"
113 #include "BKE_constraint.h"
114 #include "BKE_context.h"
115 #include "BKE_curve.h"
116 #include "BKE_deform.h"
117 #include "BKE_effect.h" /* give_parteff */
118 #include "BKE_fcurve.h"
119 #include "BKE_global.h" // for G
120 #include "BKE_group.h"
121 #include "BKE_image.h"
122 #include "BKE_lattice.h"
123 #include "BKE_library.h" // for which_libbase
124 #include "BKE_main.h" // for Main
125 #include "BKE_mesh.h" // for ME_ defines (patching)
126 #include "BKE_modifier.h"
127 #include "BKE_multires.h"
128 #include "BKE_node.h" // for tree type defines
129 #include "BKE_object.h"
130 #include "BKE_paint.h"
131 #include "BKE_particle.h"
132 #include "BKE_pointcache.h"
133 #include "BKE_property.h" // for get_ob_property
134 #include "BKE_report.h"
135 #include "BKE_sca.h" // for init_actuator
136 #include "BKE_scene.h"
137 #include "BKE_screen.h"
138 #include "BKE_sequencer.h"
139 #include "BKE_texture.h" // for open_plugin_tex
140 #include "BKE_utildefines.h" // SWITCH_INT DATA ENDB DNA1 O_BINARY GLOB USER TEST REND
141 #include "BKE_ipo.h"
142 #include "BKE_sound.h"
143
144 //XXX #include "BIF_butspace.h" // badlevel, for do_versions, patching event codes
145 //XXX #include "BIF_filelist.h" // badlevel too, where to move this? - elubie
146 //XXX #include "BIF_previewrender.h" // bedlelvel, for struct RenderInfo
147 #include "BLO_readfile.h"
148 #include "BLO_undofile.h"
149 #include "BLO_readblenfile.h" // streaming read pipe, for BLO_readblenfile BLO_readblenfilememory
150
151 #include "readfile.h"
152
153 #include "PIL_time.h"
154
155 #include <errno.h>
156
157 /*
158  Remark: still a weak point is the newadress() function, that doesnt solve reading from
159  multiple files at the same time
160
161  (added remark: oh, i thought that was solved? will look at that... (ton)
162
163 READ
164 - Existing Library (Main) push or free
165 - allocate new Main
166 - load file
167 - read SDNA
168 - for each LibBlock
169         - read LibBlock
170         - if a Library
171                 - make a new Main
172                 - attach ID's to it
173         - else
174                 - read associated 'direct data'
175                 - link direct data (internal and to LibBlock)
176 - read FileGlobal
177 - read USER data, only when indicated (file is ~/X.XX/startup.blend)
178 - free file
179 - per Library (per Main)
180         - read file
181         - read SDNA
182         - find LibBlocks and attach IDs to Main
183                 - if external LibBlock
184                         - search all Main's
185                                 - or it's already read,
186                                 - or not read yet
187                                 - or make new Main
188         - per LibBlock
189                 - read recursive
190                 - read associated direct data
191                 - link direct data (internal and to LibBlock)
192         - free file
193 - per Library with unread LibBlocks
194         - read file
195         - read SDNA
196         - per LibBlock
197                            - read recursive
198                            - read associated direct data
199                            - link direct data (internal and to LibBlock)
200                 - free file
201 - join all Mains
202 - link all LibBlocks and indirect pointers to libblocks
203 - initialize FileGlobal and copy pointers to Global
204 */
205
206 /* also occurs in library.c */
207 /* GS reads the memory pointed at in a specific ordering. There are,
208  * however two definitions for it. I have jotted them down here, both,
209  * but I think the first one is actually used. The thing is that
210  * big-endian systems might read this the wrong way round. OTOH, we
211  * constructed the IDs that are read out with this macro explicitly as
212  * well. I expect we'll sort it out soon... */
213
214 /* from blendef: */
215 #define GS(a)   (*((short *)(a)))
216
217 /* from misc_util: flip the bytes from x  */
218 /*  #define GS(x) (((unsigned char *)(x))[0] << 8 | ((unsigned char *)(x))[1]) */
219
220 // only used here in readfile.c
221 #define SWITCH_LONGINT(a) { \
222         char s_i, *p_i; \
223         p_i= (char *)&(a);  \
224         s_i=p_i[0]; p_i[0]=p_i[7]; p_i[7]=s_i; \
225         s_i=p_i[1]; p_i[1]=p_i[6]; p_i[6]=s_i; \
226         s_i=p_i[2]; p_i[2]=p_i[5]; p_i[5]=s_i; \
227         s_i=p_i[3]; p_i[3]=p_i[4]; p_i[4]=s_i; }
228
229 /***/
230
231 typedef struct OldNew {
232         void *old, *newp;
233         int nr;
234 } OldNew;
235
236 typedef struct OldNewMap {
237         OldNew *entries;
238         int nentries, entriessize;
239         int sorted;
240         int lasthit;
241 } OldNewMap;
242
243
244 /* local prototypes */
245 static void *read_struct(FileData *fd, BHead *bh, char *blockname);
246
247
248 static OldNewMap *oldnewmap_new(void) 
249 {
250         OldNewMap *onm= MEM_callocN(sizeof(*onm), "OldNewMap");
251         
252         onm->entriessize= 1024;
253         onm->entries= MEM_mallocN(sizeof(*onm->entries)*onm->entriessize, "OldNewMap.entries");
254         
255         return onm;
256 }
257
258 static int verg_oldnewmap(const void *v1, const void *v2)
259 {
260         const struct OldNew *x1=v1, *x2=v2;
261         
262         if( x1->old > x2->old) return 1;
263         else if( x1->old < x2->old) return -1;
264         return 0;
265 }
266
267
268 static void oldnewmap_sort(FileData *fd) 
269 {
270         qsort(fd->libmap->entries, fd->libmap->nentries, sizeof(OldNew), verg_oldnewmap);
271         fd->libmap->sorted= 1;
272 }
273
274 /* nr is zero for data, and ID code for libdata */
275 static void oldnewmap_insert(OldNewMap *onm, void *oldaddr, void *newaddr, int nr) 
276 {
277         OldNew *entry;
278
279         if(oldaddr==NULL || newaddr==NULL) return;
280         
281         if (onm->nentries==onm->entriessize) {
282                 int osize= onm->entriessize;
283                 OldNew *oentries= onm->entries;
284
285                 onm->entriessize*= 2;
286                 onm->entries= MEM_mallocN(sizeof(*onm->entries)*onm->entriessize, "OldNewMap.entries");
287
288                 memcpy(onm->entries, oentries, sizeof(*oentries)*osize);
289                 MEM_freeN(oentries);
290         }
291
292         entry= &onm->entries[onm->nentries++];
293         entry->old= oldaddr;
294         entry->newp= newaddr;
295         entry->nr= nr;
296 }
297
298 static void *oldnewmap_lookup_and_inc(OldNewMap *onm, void *addr) 
299 {
300         int i;
301
302         if (onm->lasthit<onm->nentries-1) {
303                 OldNew *entry= &onm->entries[++onm->lasthit];
304
305                 if (entry->old==addr) {
306                         entry->nr++;
307                         return entry->newp;
308                 }
309         }
310
311         for (i=0; i<onm->nentries; i++) {
312                 OldNew *entry= &onm->entries[i];
313
314                 if (entry->old==addr) {
315                         onm->lasthit= i;
316
317                         entry->nr++;
318                         return entry->newp;
319                 }
320         }
321
322         return NULL;
323 }
324
325 /* for libdata, nr has ID code, no increment */
326 static void *oldnewmap_liblookup(OldNewMap *onm, void *addr, void *lib) 
327 {
328         int i;
329         
330         if(addr==NULL) return NULL;
331         
332         /* lasthit works fine for non-libdata, linking there is done in same sequence as writing */
333         if(onm->sorted) {
334                 OldNew entry_s, *entry;
335                 
336                 entry_s.old= addr;
337                 
338                 entry= bsearch(&entry_s, onm->entries, onm->nentries, sizeof(OldNew), verg_oldnewmap);
339                 if(entry) {
340                         ID *id= entry->newp;
341                         
342                         if (id && (!lib || id->lib)) {
343                                 return entry->newp;
344                         }
345                 }
346         }
347         
348         for (i=0; i<onm->nentries; i++) {
349                 OldNew *entry= &onm->entries[i];
350
351                 if (entry->old==addr) {
352                         ID *id= entry->newp;
353
354                         if (id && (!lib || id->lib)) {
355                                 return entry->newp;
356                         }
357                 }
358         }
359
360         return NULL;
361 }
362
363 static void oldnewmap_free_unused(OldNewMap *onm) 
364 {
365         int i;
366
367         for (i=0; i<onm->nentries; i++) {
368                 OldNew *entry= &onm->entries[i];
369                 if (entry->nr==0) {
370                         MEM_freeN(entry->newp);
371                         entry->newp= NULL;
372                 }
373         }
374 }
375
376 static void oldnewmap_clear(OldNewMap *onm) 
377 {
378         onm->nentries= 0;
379         onm->lasthit= 0;
380 }
381
382 static void oldnewmap_free(OldNewMap *onm) 
383 {
384         MEM_freeN(onm->entries);
385         MEM_freeN(onm);
386 }
387
388 /***/
389
390 static void read_libraries(FileData *basefd, ListBase *mainlist);
391
392 /* ************ help functions ***************** */
393
394 static void add_main_to_main(Main *mainvar, Main *from)
395 {
396         ListBase *lbarray[MAX_LIBARRAY], *fromarray[MAX_LIBARRAY];
397         int a;
398
399         a= set_listbasepointers(mainvar, lbarray);
400         a= set_listbasepointers(from, fromarray);
401         while(a--) {
402                 addlisttolist(lbarray[a], fromarray[a]);
403         }
404 }
405
406 void blo_join_main(ListBase *mainlist)
407 {
408         Main *tojoin, *mainl;
409         
410         
411         mainl= mainlist->first;
412         while ((tojoin= mainl->next)) {
413                 add_main_to_main(mainl, tojoin);
414                 BLI_remlink(mainlist, tojoin);
415                 MEM_freeN(tojoin);
416         }
417 }
418
419 static void split_libdata(ListBase *lb, Main *first)
420 {
421         ListBase *lbn;
422         ID *id, *idnext;
423         Main *mainvar;
424
425         id= lb->first;
426         while(id) {
427                 idnext= id->next;
428                 if(id->lib) {
429                         mainvar= first;
430                         while(mainvar) {
431                                 if(mainvar->curlib==id->lib) {
432                                         lbn= which_libbase(mainvar, GS(id->name));
433                                         BLI_remlink(lb, id);
434                                         BLI_addtail(lbn, id);
435                                         break;
436                                 }
437                                 mainvar= mainvar->next;
438                         }
439                         if(mainvar==0) printf("error split_libdata\n");
440                 }
441                 id= idnext;
442         }
443 }
444
445 void blo_split_main(ListBase *mainlist, Main *main)
446 {
447         ListBase *lbarray[MAX_LIBARRAY];
448         Library *lib;
449         int i;
450
451         mainlist->first= mainlist->last= main;
452         main->next= NULL;
453
454         if(main->library.first==NULL)
455                 return;
456         
457         for (lib= main->library.first; lib; lib= lib->id.next) {
458                 Main *libmain= MEM_callocN(sizeof(Main), "libmain");
459                 libmain->curlib= lib;
460                 BLI_addtail(mainlist, libmain);
461         }
462
463         i= set_listbasepointers(main, lbarray);
464         while(i--)
465                 split_libdata(lbarray[i], main->next);
466 }
467
468 /* removes things like /blah/blah/../../blah/ etc, then writes in *name the full path */
469 static void cleanup_path(const char *relabase, char *name)
470 {
471         char filename[FILE_MAXFILE];
472         
473         BLI_splitdirstring(name, filename);
474         BLI_cleanup_dir(relabase, name);
475         strcat(name, filename);
476 }
477
478 static void read_file_version(FileData *fd, Main *main)
479 {
480         BHead *bhead;
481         
482         for (bhead= blo_firstbhead(fd); bhead; bhead= blo_nextbhead(fd, bhead)) {
483                 if (bhead->code==GLOB) {
484                         FileGlobal *fg= read_struct(fd, bhead, "Global");
485                         if(fg) {
486                                 main->subversionfile= fg->subversion;
487                                 main->minversionfile= fg->minversion;
488                                 main->minsubversionfile= fg->minsubversion;
489                                 MEM_freeN(fg);
490                         }
491                         else if (bhead->code==ENDB)
492                                 break;
493                 }
494         }
495 }
496
497
498 static Main *blo_find_main(FileData *fd, ListBase *mainlist, const char *name, const char *relabase)
499 {
500         Main *m;
501         Library *lib;
502         char name1[FILE_MAXDIR+FILE_MAXFILE];
503         
504         strncpy(name1, name, sizeof(name1)-1);
505         cleanup_path(relabase, name1);
506 //      printf("blo_find_main: original in  %s\n", name);
507 //      printf("blo_find_main: converted to %s\n", name1);
508
509         for (m= mainlist->first; m; m= m->next) {
510                 char *libname= (m->curlib)?m->curlib->filepath:m->name;
511                 
512                 if (BLI_streq(name1, libname)) {
513                         if(G.f & G_DEBUG) printf("blo_find_main: found library %s\n", libname);
514                         return m;
515                 }
516         }
517
518         m= MEM_callocN(sizeof(Main), "find_main");
519         BLI_addtail(mainlist, m);
520
521         lib= alloc_libblock(&m->library, ID_LI, "lib");
522         strncpy(lib->name, name, sizeof(lib->name)-1);
523         BLI_strncpy(lib->filepath, name1, sizeof(lib->filepath));
524         
525         m->curlib= lib;
526         
527         read_file_version(fd, m);
528         
529         if(G.f & G_DEBUG) printf("blo_find_main: added new lib %s\n", name);
530         return m;
531 }
532
533
534 /* ************ FILE PARSING ****************** */
535
536 static void switch_endian_bh4(BHead4 *bhead)
537 {
538         /* the ID_.. codes */
539         if((bhead->code & 0xFFFF)==0) bhead->code >>=16;
540
541         if (bhead->code != ENDB) {
542                 SWITCH_INT(bhead->len);
543                 SWITCH_INT(bhead->SDNAnr);
544                 SWITCH_INT(bhead->nr);
545         }
546 }
547
548 static void switch_endian_bh8(BHead8 *bhead)
549 {
550         /* the ID_.. codes */
551         if((bhead->code & 0xFFFF)==0) bhead->code >>=16;
552
553         if (bhead->code != ENDB) {
554                 SWITCH_INT(bhead->len);
555                 SWITCH_INT(bhead->SDNAnr);
556                 SWITCH_INT(bhead->nr);
557         }
558 }
559
560 static void bh4_from_bh8(BHead *bhead, BHead8 *bhead8, int do_endian_swap)
561 {
562         BHead4 *bhead4 = (BHead4 *) bhead;
563 #if defined(WIN32) && !defined(FREE_WINDOWS)
564         __int64 old;
565 #else
566         long long old;
567 #endif
568
569         bhead4->code= bhead8->code;
570         bhead4->len= bhead8->len;
571
572         if (bhead4->code != ENDB) {
573
574                 //perform a endian swap on 64bit pointers, otherwise the pointer might map to zero
575                 //0x0000000000000000000012345678 would become 0x12345678000000000000000000000000
576                 if (do_endian_swap) {
577                         SWITCH_LONGINT(bhead8->old);
578                 }
579
580                 /* this patch is to avoid a long long being read from not-eight aligned positions
581                    is necessary on any modern 64bit architecture) */
582                 memcpy(&old, &bhead8->old, 8);
583                 bhead4->old = (int) (old >> 3);
584
585                 bhead4->SDNAnr= bhead8->SDNAnr;
586                 bhead4->nr= bhead8->nr;
587         }
588 }
589
590 static void bh8_from_bh4(BHead *bhead, BHead4 *bhead4)
591 {
592         BHead8 *bhead8 = (BHead8 *) bhead;
593
594         bhead8->code= bhead4->code;
595         bhead8->len= bhead4->len;
596
597         if (bhead8->code != ENDB) {
598                 bhead8->old= bhead4->old;
599                 bhead8->SDNAnr= bhead4->SDNAnr;
600                 bhead8->nr= bhead4->nr;
601         }
602 }
603
604 static BHeadN *get_bhead(FileData *fd)
605 {
606         BHead8 bhead8;
607         BHead4 bhead4;
608         BHead  bhead;
609         BHeadN *new_bhead = 0;
610         int readsize;
611         
612         if (fd) {
613                 if ( ! fd->eof) {
614
615                         /* not strictly needed but shuts valgrind up
616                          * since uninitialized memory gets compared */
617                         memset(&bhead8, 0, sizeof(BHead8));
618                         memset(&bhead4, 0, sizeof(BHead4));
619                         memset(&bhead,  0, sizeof(BHead));
620                         
621                         // First read the bhead structure.
622                         // Depending on the platform the file was written on this can
623                         // be a big or little endian BHead4 or BHead8 structure.
624
625                         // As usual 'ENDB' (the last *partial* bhead of the file)
626                         // needs some special handling. We don't want to EOF just yet.
627
628                         if (fd->flags & FD_FLAGS_FILE_POINTSIZE_IS_4) {
629                                 bhead4.code = DATA;
630                                 readsize = fd->read(fd, &bhead4, sizeof(bhead4));
631
632                                 if (readsize == sizeof(bhead4) || bhead4.code == ENDB) {
633                                         if (fd->flags & FD_FLAGS_SWITCH_ENDIAN) {
634                                                 switch_endian_bh4(&bhead4);
635                                         }
636
637                                         if (fd->flags & FD_FLAGS_POINTSIZE_DIFFERS) {
638                                                 bh8_from_bh4(&bhead, &bhead4);
639                                         } else {
640                                                 memcpy(&bhead, &bhead4, sizeof(bhead));
641                                         }
642                                 } else {
643                                         fd->eof = 1;
644                                         bhead.len= 0;
645                                 }
646                         } else {
647                                 bhead8.code = DATA;
648                                 readsize = fd->read(fd, &bhead8, sizeof(bhead8));
649
650                                 if (readsize == sizeof(bhead8) || bhead8.code == ENDB) {
651                                         if (fd->flags & FD_FLAGS_SWITCH_ENDIAN) {
652                                                 switch_endian_bh8(&bhead8);
653                                         }
654
655                                         if (fd->flags & FD_FLAGS_POINTSIZE_DIFFERS) {
656                                                 bh4_from_bh8(&bhead, &bhead8, (fd->flags & FD_FLAGS_SWITCH_ENDIAN));
657                                         } else {
658                                                 memcpy(&bhead, &bhead8, sizeof(bhead));
659                                         }
660                                 } else {
661                                         fd->eof = 1;
662                                         bhead.len= 0;
663                                 }
664                         }
665
666                         /* make sure people are not trying to pass bad blend files */
667                         if (bhead.len < 0) fd->eof = 1;
668
669                         // bhead now contains the (converted) bhead structure. Now read
670                         // the associated data and put everything in a BHeadN (creative naming !)
671
672                         if ( ! fd->eof) {
673                                 new_bhead = MEM_mallocN(sizeof(BHeadN) + bhead.len, "new_bhead");
674                                 if (new_bhead) {
675                                         new_bhead->next = new_bhead->prev = 0;
676                                         new_bhead->bhead = bhead;
677
678                                         readsize = fd->read(fd, new_bhead + 1, bhead.len);
679
680                                         if (readsize != bhead.len) {
681                                                 fd->eof = 1;
682                                                 MEM_freeN(new_bhead);
683                                                 new_bhead = 0;
684                                         }
685                                 } else {
686                                         fd->eof = 1;
687                                 }
688                         }
689                 }
690         }
691
692         // We've read a new block. Now add it to the list
693         // of blocks.
694
695         if (new_bhead) {
696                 BLI_addtail(&fd->listbase, new_bhead);
697         }
698
699         return(new_bhead);
700 }
701
702 BHead *blo_firstbhead(FileData *fd)
703 {
704         BHeadN *new_bhead;
705         BHead *bhead = 0;
706
707         // Rewind the file
708         // Read in a new block if necessary
709
710         new_bhead = fd->listbase.first;
711         if (new_bhead == 0) {
712                 new_bhead = get_bhead(fd);
713         }
714
715         if (new_bhead) {
716                 bhead = &new_bhead->bhead;
717         }
718
719         return(bhead);
720 }
721
722 BHead *blo_prevbhead(FileData *fd, BHead *thisblock)
723 {
724         BHeadN *bheadn= (BHeadN *) (((char *) thisblock) - GET_INT_FROM_POINTER( &((BHeadN*)0)->bhead) );
725         BHeadN *prev= bheadn->prev;
726
727         return prev?&prev->bhead:NULL;
728 }
729
730 BHead *blo_nextbhead(FileData *fd, BHead *thisblock)
731 {
732         BHeadN *new_bhead = NULL;
733         BHead *bhead = NULL;
734
735         if (thisblock) {
736                 // bhead is actually a sub part of BHeadN
737                 // We calculate the BHeadN pointer from the BHead pointer below
738                 new_bhead = (BHeadN *) (((char *) thisblock) - GET_INT_FROM_POINTER( &((BHeadN*)0)->bhead) );
739
740                 // get the next BHeadN. If it doesn't exist we read in the next one
741                 new_bhead = new_bhead->next;
742                 if (new_bhead == 0) {
743                         new_bhead = get_bhead(fd);
744                 }
745         }
746
747         if (new_bhead) {
748                 // here we do the reverse:
749                 // go from the BHeadN pointer to the BHead pointer
750                 bhead = &new_bhead->bhead;
751         }
752
753         return(bhead);
754 }
755
756 static void decode_blender_header(FileData *fd)
757 {
758         char header[SIZEOFBLENDERHEADER], num[4];
759         int readsize;
760
761         // read in the header data
762         readsize = fd->read(fd, header, sizeof(header));
763
764         if (readsize == sizeof(header)) {
765                 if(strncmp(header, "BLENDER", 7) == 0) {
766                         int remove_this_endian_test= 1;
767
768                         fd->flags |= FD_FLAGS_FILE_OK;
769
770                         // what size are pointers in the file ?
771                         if(header[7]=='_') {
772                                 fd->flags |= FD_FLAGS_FILE_POINTSIZE_IS_4;
773                                 if (sizeof(void *) != 4) {
774                                         fd->flags |= FD_FLAGS_POINTSIZE_DIFFERS;
775                                 }
776                         } else {
777                                 if (sizeof(void *) != 8) {
778                                         fd->flags |= FD_FLAGS_POINTSIZE_DIFFERS;
779                                 }
780                         }
781
782                         // is the file saved in a different endian
783                         // than we need ?
784                         if (((((char*)&remove_this_endian_test)[0]==1)?L_ENDIAN:B_ENDIAN) != ((header[8]=='v')?L_ENDIAN:B_ENDIAN)) {
785                                 fd->flags |= FD_FLAGS_SWITCH_ENDIAN;
786                         }
787
788                         // get the version number
789
790                         memcpy(num, header+9, 3);
791                         num[3] = 0;
792                         fd->fileversion = atoi(num);
793                 }
794         }
795 }
796
797 static int read_file_dna(FileData *fd)
798 {
799         BHead *bhead;
800
801         for (bhead= blo_firstbhead(fd); bhead; bhead= blo_nextbhead(fd, bhead)) {
802                 if (bhead->code==DNA1) {
803                         int do_endian_swap= (fd->flags&FD_FLAGS_SWITCH_ENDIAN)?1:0;
804
805                         fd->filesdna= DNA_sdna_from_data(&bhead[1], bhead->len, do_endian_swap);
806                         if (fd->filesdna) {
807                                 
808                                 fd->compflags= DNA_struct_get_compareflags(fd->filesdna, fd->memsdna);
809                                 /* used to retrieve ID names from (bhead+1) */
810                                 fd->id_name_offs= DNA_elem_offset(fd->filesdna, "ID", "char", "name[]");
811                         }
812
813                         return 1;
814                 } else if (bhead->code==ENDB)
815                         break;
816         }
817
818         return 0;
819 }
820
821 static int fd_read_from_file(FileData *filedata, void *buffer, unsigned int size)
822 {
823         int readsize = read(filedata->filedes, buffer, size);
824
825         if (readsize < 0) {
826                 readsize = EOF;
827         } else {
828                 filedata->seek += readsize;
829         }
830
831         return (readsize);
832 }
833
834 static int fd_read_gzip_from_file(FileData *filedata, void *buffer, unsigned int size)
835 {
836         int readsize = gzread(filedata->gzfiledes, buffer, size);
837
838         if (readsize < 0) {
839                 readsize = EOF;
840         } else {
841                 filedata->seek += readsize;
842         }
843
844         return (readsize);
845 }
846
847 static int fd_read_from_memory(FileData *filedata, void *buffer, unsigned int size)
848 {
849                 // don't read more bytes then there are available in the buffer
850         int readsize = MIN2(size, filedata->buffersize - filedata->seek);
851
852         memcpy(buffer, filedata->buffer + filedata->seek, readsize);
853         filedata->seek += readsize;
854
855         return (readsize);
856 }
857
858 static int fd_read_from_memfile(FileData *filedata, void *buffer, unsigned int size)
859 {
860         static unsigned int seek= 1<<30;        /* the current position */
861         static unsigned int offset= 0;          /* size of previous chunks */
862         static MemFileChunk *chunk=NULL;
863         unsigned int chunkoffset, readsize, totread;
864         
865         if(size==0) return 0;
866         
867         if(seek != (unsigned int)filedata->seek) {
868                 chunk= filedata->memfile->chunks.first;
869                 seek= 0;
870                 
871                 while(chunk) {
872                         if(seek + chunk->size > (unsigned) filedata->seek) break;
873                         seek+= chunk->size;
874                         chunk= chunk->next;
875                 }
876                 offset= seek;
877                 seek= filedata->seek;
878         }
879         
880         if(chunk) {
881                 totread= 0;
882
883                 do {
884                         /* first check if it's on the end if current chunk */
885                         if(seek-offset == chunk->size) {
886                                 offset+= chunk->size;
887                                 chunk= chunk->next;
888                         }
889
890                         /* debug, should never happen */
891                         if(chunk==NULL) {
892                                 printf("illegal read, chunk zero\n");
893                                 return 0;
894                         }
895
896                         chunkoffset= seek-offset;
897                         readsize= size-totread;
898
899                         /* data can be spread over multiple chunks, so clamp size
900                          * to within this chunk, and then it will read further in
901                          * the next chunk */
902                         if(chunkoffset+readsize > chunk->size)
903                                 readsize= chunk->size-chunkoffset;
904
905                         memcpy((char*)buffer+totread, chunk->buf+chunkoffset, readsize);
906                         totread += readsize;
907                         filedata->seek += readsize;
908                         seek += readsize;
909                 } while(totread < size);
910                 
911                 return totread;
912         }
913
914         return 0;
915 }
916
917 static FileData *filedata_new(void)
918 {
919         FileData *fd = MEM_callocN(sizeof(FileData), "FileData");
920
921         fd->filedes = -1;
922         fd->gzfiledes = NULL;
923
924                 /* XXX, this doesn't need to be done all the time,
925                  * but it keeps us reentrant,  remove once we have
926                  * a lib that provides a nice lock. - zr
927                  */
928         fd->memsdna = DNA_sdna_from_data(DNAstr,  DNAlen,  0);
929
930         fd->datamap = oldnewmap_new();
931         fd->globmap = oldnewmap_new();
932         fd->libmap = oldnewmap_new();
933
934         return fd;
935 }
936
937 static FileData *blo_decode_and_check(FileData *fd, ReportList *reports)
938 {
939         decode_blender_header(fd);
940
941         if (fd->flags & FD_FLAGS_FILE_OK) {
942                 if (!read_file_dna(fd)) {
943                         BKE_report(reports, RPT_ERROR, "File incomplete");
944                         blo_freefiledata(fd);
945                         fd= NULL;
946                 }
947         } 
948         else {
949                 BKE_report(reports, RPT_ERROR, "File is not a Blender file");
950                 blo_freefiledata(fd);
951                 fd= NULL;
952         }
953
954         return fd;
955 }
956
957 /* cannot be called with relative paths anymore! */
958 /* on each new library added, it now checks for the current FileData and expands relativeness */
959 FileData *blo_openblenderfile(char *name, ReportList *reports)
960 {
961         gzFile gzfile;
962         errno= 0;
963         gzfile= gzopen(name, "rb");
964
965         if (gzfile == Z_NULL) {
966                 BKE_reportf(reports, RPT_ERROR, "Unable to open \"%s\": %s.", name, errno ? strerror(errno) : "Unknown erro reading file");
967                 return NULL;
968         } else {
969                 FileData *fd = filedata_new();
970                 fd->gzfiledes = gzfile;
971                 fd->read = fd_read_gzip_from_file;
972
973                 /* needed for library_append and read_libraries */
974                 BLI_strncpy(fd->relabase, name, sizeof(fd->relabase));
975
976                 return blo_decode_and_check(fd, reports);
977         }
978 }
979
980 FileData *blo_openblendermemory(void *mem, int memsize, ReportList *reports)
981 {
982         if (!mem || memsize<SIZEOFBLENDERHEADER) {
983                 BKE_report(reports, RPT_ERROR, (mem)? "Unable to read": "Unable to open");
984                 return NULL;
985         } else {
986                 FileData *fd= filedata_new();
987                 fd->buffer= mem;
988                 fd->buffersize= memsize;
989                 fd->read= fd_read_from_memory;
990                 fd->flags|= FD_FLAGS_NOT_MY_BUFFER;
991
992                 return blo_decode_and_check(fd, reports);
993         }
994 }
995
996 FileData *blo_openblendermemfile(MemFile *memfile, ReportList *reports)
997 {
998         if (!memfile) {
999                 BKE_report(reports, RPT_ERROR, "Unable to open blend <memory>");
1000                 return NULL;
1001         } else {
1002                 FileData *fd= filedata_new();
1003                 fd->memfile= memfile;
1004
1005                 fd->read= fd_read_from_memfile;
1006                 fd->flags|= FD_FLAGS_NOT_MY_BUFFER;
1007
1008                 return blo_decode_and_check(fd, reports);
1009         }
1010 }
1011
1012
1013 void blo_freefiledata(FileData *fd)
1014 {
1015         if (fd) {
1016                 
1017                 if (fd->filedes != -1) {
1018                         close(fd->filedes);
1019                 }
1020
1021                 if (fd->gzfiledes != NULL)
1022                 {
1023                         gzclose(fd->gzfiledes);
1024                 }
1025
1026                 if (fd->buffer && !(fd->flags & FD_FLAGS_NOT_MY_BUFFER)) {
1027                         MEM_freeN(fd->buffer);
1028                         fd->buffer = 0;
1029                 }
1030
1031                 // Free all BHeadN data blocks
1032                 BLI_freelistN(&fd->listbase);
1033
1034                 if (fd->memsdna)
1035                         DNA_sdna_free(fd->memsdna);
1036                 if (fd->filesdna)
1037                         DNA_sdna_free(fd->filesdna);
1038                 if (fd->compflags)
1039                         MEM_freeN(fd->compflags);
1040
1041                 if (fd->datamap)
1042                         oldnewmap_free(fd->datamap);
1043                 if (fd->globmap)
1044                         oldnewmap_free(fd->globmap);
1045                 if (fd->imamap)
1046                         oldnewmap_free(fd->imamap);
1047                 if (fd->libmap && !(fd->flags & FD_FLAGS_NOT_MY_LIBMAP))
1048                         oldnewmap_free(fd->libmap);
1049                 if (fd->bheadmap)
1050                         MEM_freeN(fd->bheadmap);
1051                 
1052                 MEM_freeN(fd);
1053         }
1054 }
1055
1056 /* ************ DIV ****************** */
1057
1058 int BLO_has_bfile_extension(char *str)
1059 {
1060         return (BLI_testextensie(str, ".ble") || BLI_testextensie(str, ".blend")||BLI_testextensie(str, ".blend.gz"));
1061 }
1062
1063 int BLO_is_a_library(const char *path, char *dir, char *group)
1064 {
1065         /* return ok when a blenderfile, in dir is the filename,
1066          * in group the type of libdata
1067          */
1068         int len;
1069         char *fd;
1070         
1071         strcpy(dir, path);
1072         len= strlen(dir);
1073         if(len<7) return 0;
1074         if( dir[len-1] != '/' && dir[len-1] != '\\') return 0;
1075         
1076         group[0]= 0;
1077         dir[len-1]= 0;
1078
1079         /* Find the last slash */
1080         fd= BLI_last_slash(dir);
1081
1082         if(fd==0) return 0;
1083         *fd= 0;
1084         if(BLO_has_bfile_extension(fd+1)) {
1085                 /* the last part of the dir is a .blend file, no group follows */
1086                 *fd= '/'; /* put back the removed slash separating the dir and the .blend file name */
1087         }
1088         else {          
1089                 char *gp = fd+1; // in case we have a .blend file, gp points to the group
1090
1091                 /* Find the last slash */
1092                 fd= BLI_last_slash(dir);
1093                 if (!fd || !BLO_has_bfile_extension(fd+1)) return 0;
1094
1095                 /* now we know that we are in a blend file and it is safe to 
1096                    assume that gp actually points to a group */
1097                 if (BLI_streq("Screen", gp)==0)
1098                         BLI_strncpy(group, gp, GROUP_MAX);
1099         }
1100         return 1;
1101 }
1102
1103 /* ************** OLD POINTERS ******************* */
1104
1105 static void *newdataadr(FileData *fd, void *adr)                /* only direct databocks */
1106 {
1107         return oldnewmap_lookup_and_inc(fd->datamap, adr);
1108 }
1109
1110 static void *newglobadr(FileData *fd, void *adr)                /* direct datablocks with global linking */
1111 {
1112         return oldnewmap_lookup_and_inc(fd->globmap, adr);
1113 }
1114
1115 static void *newimaadr(FileData *fd, void *adr)         /* used to restore image data after undo */
1116 {
1117         if(fd->imamap && adr)
1118                 return oldnewmap_lookup_and_inc(fd->imamap, adr);
1119         return NULL;
1120 }
1121
1122
1123 static void *newlibadr(FileData *fd, void *lib, void *adr)              /* only lib data */
1124 {
1125         return oldnewmap_liblookup(fd->libmap, adr, lib);
1126 }
1127
1128 static void *newlibadr_us(FileData *fd, void *lib, void *adr)   /* increases user number */
1129 {
1130         ID *id= newlibadr(fd, lib, adr);
1131
1132         if(id)
1133                 id->us++;
1134
1135         return id;
1136 }
1137
1138 static void change_idid_adr_fd(FileData *fd, void *old, void *new)
1139 {
1140         int i;
1141         
1142         for (i=0; i<fd->libmap->nentries; i++) {
1143                 OldNew *entry= &fd->libmap->entries[i];
1144                 
1145                 if (old==entry->newp && entry->nr==ID_ID) {
1146                         entry->newp= new;
1147                         if(new) entry->nr= GS( ((ID *)new)->name );
1148                         break;
1149                 }
1150         }
1151 }
1152
1153 static void change_idid_adr(ListBase *mainlist, FileData *basefd, void *old, void *new)
1154 {
1155         Main *mainptr;
1156         
1157         for(mainptr= mainlist->first; mainptr; mainptr= mainptr->next) {
1158                 FileData *fd;
1159                 
1160                 if(mainptr->curlib) fd= mainptr->curlib->filedata;
1161                 else fd= basefd;
1162                 
1163                 if(fd) {
1164                         change_idid_adr_fd(fd, old, new);
1165                 }
1166         }
1167 }
1168
1169 /* lib linked proxy objects point to our local data, we need
1170  * to clear that pointer before reading the undo memfile since
1171  * the object might be removed, it is set again in reading
1172  * if the local object still exists */
1173 void blo_clear_proxy_pointers_from_lib(FileData *fd, Main *oldmain)
1174 {
1175         Object *ob= oldmain->object.first;
1176         
1177         for(;ob; ob= ob->id.next)
1178                 if(ob->id.lib)
1179                         ob->proxy_from= NULL;
1180 }
1181
1182 void blo_make_image_pointer_map(FileData *fd, Main *oldmain)
1183 {
1184         Image *ima= oldmain->image.first;
1185         Scene *sce= oldmain->scene.first;
1186         int a;
1187         
1188         fd->imamap= oldnewmap_new();
1189         
1190         for(;ima; ima= ima->id.next) {
1191                 Link *ibuf= ima->ibufs.first;
1192                 for(; ibuf; ibuf= ibuf->next) 
1193                         oldnewmap_insert(fd->imamap, ibuf, ibuf, 0);
1194                 if(ima->gputexture)
1195                         oldnewmap_insert(fd->imamap, ima->gputexture, ima->gputexture, 0);
1196                 for(a=0; a<IMA_MAX_RENDER_SLOT; a++)
1197                         if(ima->renders[a])
1198                                 oldnewmap_insert(fd->imamap, ima->renders[a], ima->renders[a], 0);
1199         }
1200         for(; sce; sce= sce->id.next) {
1201                 if(sce->nodetree) {
1202                         bNode *node;
1203                         for(node= sce->nodetree->nodes.first; node; node= node->next)
1204                                 oldnewmap_insert(fd->imamap, node->preview, node->preview, 0);
1205                 }
1206         }
1207 }
1208
1209 /* set old main image ibufs to zero if it has been restored */
1210 /* this works because freeing old main only happens after this call */
1211 void blo_end_image_pointer_map(FileData *fd, Main *oldmain)
1212 {
1213         OldNew *entry= fd->imamap->entries;
1214         Image *ima= oldmain->image.first;
1215         Scene *sce= oldmain->scene.first;
1216         int i, a;
1217         
1218         /* used entries were restored, so we put them to zero */
1219         for (i=0; i<fd->imamap->nentries; i++, entry++) {
1220                  if (entry->nr>0)
1221                         entry->newp= NULL;
1222         }
1223         
1224         for(;ima; ima= ima->id.next) {
1225                 Link *ibuf, *next;
1226                 
1227                 /* this mirrors direct_link_image */
1228                 for(ibuf= ima->ibufs.first; ibuf; ibuf= next) {
1229                         next= ibuf->next;
1230                         if(NULL==newimaadr(fd, ibuf)) { /* so was restored */
1231                                 BLI_remlink(&ima->ibufs, ibuf);
1232                                 ima->bindcode= 0;
1233                                 ima->gputexture= NULL;
1234                         }
1235                 }
1236
1237                 ima->gputexture= newimaadr(fd, ima->gputexture);
1238                 for(a=0; a<IMA_MAX_RENDER_SLOT; a++)
1239                         ima->renders[a]= newimaadr(fd, ima->renders[a]);
1240         }
1241         for(; sce; sce= sce->id.next) {
1242                 if(sce->nodetree) {
1243                         bNode *node;
1244                         for(node= sce->nodetree->nodes.first; node; node= node->next)
1245                                 node->preview= newimaadr(fd, node->preview);
1246                 }
1247         }
1248 }
1249
1250 /* undo file support: add all library pointers in lookup */
1251 void blo_add_library_pointer_map(ListBase *mainlist, FileData *fd)
1252 {
1253         Main *ptr= mainlist->first;
1254         ListBase *lbarray[MAX_LIBARRAY];
1255         
1256         for(ptr= ptr->next; ptr; ptr= ptr->next) {
1257                 int i= set_listbasepointers(ptr, lbarray);
1258                 while(i--) {
1259                         ID *id;
1260                         for(id= lbarray[i]->first; id; id= id->next)
1261                                 oldnewmap_insert(fd->libmap, id, id, GS(id->name));
1262                 }
1263         }
1264 }
1265                 
1266
1267 /* ********** END OLD POINTERS ****************** */
1268 /* ********** READ FILE ****************** */
1269
1270 static void switch_endian_structs(struct SDNA *filesdna, BHead *bhead)
1271 {
1272         int blocksize, nblocks;
1273         char *data;
1274
1275         data= (char *)(bhead+1);
1276         blocksize= filesdna->typelens[ filesdna->structs[bhead->SDNAnr][0] ];
1277
1278         nblocks= bhead->nr;
1279         while(nblocks--) {
1280                 DNA_struct_switch_endian(filesdna, bhead->SDNAnr, data);
1281
1282                 data+= blocksize;
1283         }
1284 }
1285
1286 static void *read_struct(FileData *fd, BHead *bh, char *blockname)
1287 {
1288         void *temp= NULL;
1289
1290         if (bh->len) {
1291                 /* switch is based on file dna */
1292                 if (bh->SDNAnr && (fd->flags & FD_FLAGS_SWITCH_ENDIAN))
1293                         switch_endian_structs(fd->filesdna, bh);
1294
1295                 if (fd->compflags[bh->SDNAnr]) {        /* flag==0: doesn't exist anymore */
1296                         if(fd->compflags[bh->SDNAnr]==2) {
1297                                 temp= DNA_struct_reconstruct(fd->memsdna, fd->filesdna, fd->compflags, bh->SDNAnr, bh->nr, (bh+1));
1298                         } else {
1299                                 temp= MEM_mallocN(bh->len, blockname);
1300                                 memcpy(temp, (bh+1), bh->len);
1301                         }
1302                 }
1303         }
1304
1305         return temp;
1306 }
1307
1308 static void link_list(FileData *fd, ListBase *lb)               /* only direct data */
1309 {
1310         Link *ln, *prev;
1311
1312         if(lb->first==NULL) return;
1313
1314         lb->first= newdataadr(fd, lb->first);
1315         ln= lb->first;
1316         prev= NULL;
1317         while(ln) {
1318                 ln->next= newdataadr(fd, ln->next);
1319                 ln->prev= prev;
1320                 prev= ln;
1321                 ln= ln->next;
1322         }
1323         lb->last= prev;
1324 }
1325
1326 static void link_glob_list(FileData *fd, ListBase *lb)          /* for glob data */
1327 {
1328         Link *ln, *prev;
1329         void *poin;
1330
1331         if(lb->first==0) return;
1332         poin= newdataadr(fd, lb->first);
1333         if(lb->first) {
1334                 oldnewmap_insert(fd->globmap, lb->first, poin, 0);
1335         }
1336         lb->first= poin;
1337
1338         ln= lb->first;
1339         prev= 0;
1340         while(ln) {
1341                 poin= newdataadr(fd, ln->next);
1342                 if(ln->next) {
1343                         oldnewmap_insert(fd->globmap, ln->next, poin, 0);
1344                 }
1345                 ln->next= poin;
1346                 ln->prev= prev;
1347                 prev= ln;
1348                 ln= ln->next;
1349         }
1350         lb->last= prev;
1351 }
1352
1353 static void test_pointer_array(FileData *fd, void **mat)
1354 {
1355 #if defined(WIN32) && !defined(FREE_WINDOWS)
1356         __int64 *lpoin, *lmat;
1357 #else
1358         long long *lpoin, *lmat;
1359 #endif
1360         int *ipoin, *imat;
1361         size_t len;
1362
1363                 /* manually convert the pointer array in
1364                  * the old dna format to a pointer array in
1365                  * the new dna format.
1366                  */
1367         if(*mat) {
1368                 len= MEM_allocN_len(*mat)/fd->filesdna->pointerlen;
1369
1370                 if(fd->filesdna->pointerlen==8 && fd->memsdna->pointerlen==4) {
1371                         ipoin=imat= MEM_mallocN( len*4, "newmatar");
1372                         lpoin= *mat;
1373
1374                         while(len-- > 0) {
1375                                 if((fd->flags & FD_FLAGS_SWITCH_ENDIAN))
1376                                         SWITCH_LONGINT(*lpoin);
1377                                 *ipoin= (int) ((*lpoin) >> 3);
1378                                 ipoin++;
1379                                 lpoin++;
1380                         }
1381                         MEM_freeN(*mat);
1382                         *mat= imat;
1383                 }
1384
1385                 if(fd->filesdna->pointerlen==4 && fd->memsdna->pointerlen==8) {
1386                         lpoin=lmat= MEM_mallocN( len*8, "newmatar");
1387                         ipoin= *mat;
1388
1389                         while(len-- > 0) {
1390                                 *lpoin= *ipoin;
1391                                 ipoin++;
1392                                 lpoin++;
1393                         }
1394                         MEM_freeN(*mat);
1395                         *mat= lmat;
1396                 }
1397         }
1398 }
1399
1400 /* ************ READ ID Properties *************** */
1401
1402 void IDP_DirectLinkProperty(IDProperty *prop, int switch_endian, FileData *fd);
1403 void IDP_LibLinkProperty(IDProperty *prop, int switch_endian, FileData *fd);
1404
1405 static void IDP_DirectLinkIDPArray(IDProperty *prop, int switch_endian, FileData *fd)
1406 {
1407         IDProperty *array;
1408         int i;
1409
1410         /*since we didn't save the extra buffer, set totallen to len.*/
1411         prop->totallen = prop->len;
1412         prop->data.pointer = newdataadr(fd, prop->data.pointer);
1413
1414         array= (IDProperty*) prop->data.pointer;
1415
1416         for(i=0; i<prop->len; i++)
1417                 IDP_DirectLinkProperty(&array[i], switch_endian, fd);
1418 }
1419
1420 static void IDP_DirectLinkArray(IDProperty *prop, int switch_endian, FileData *fd)
1421 {
1422         IDProperty **array;
1423         int i;
1424
1425         /*since we didn't save the extra buffer, set totallen to len.*/
1426         prop->totallen = prop->len;
1427         prop->data.pointer = newdataadr(fd, prop->data.pointer);
1428
1429         if(prop->subtype == IDP_GROUP) {
1430                 test_pointer_array(fd, prop->data.pointer);
1431                 array= prop->data.pointer;
1432
1433                 for(i=0; i<prop->len; i++)
1434                         IDP_DirectLinkProperty(array[i], switch_endian, fd);
1435         }
1436         else if(prop->subtype == IDP_DOUBLE) {
1437                 if (switch_endian) {
1438                         for (i=0; i<prop->len; i++) {
1439                                 SWITCH_LONGINT(((double*)prop->data.pointer)[i]);
1440                         }
1441                 }
1442         }
1443         else {
1444                 if (switch_endian) {
1445                         for (i=0; i<prop->len; i++) {
1446                                 SWITCH_INT(((int*)prop->data.pointer)[i]);
1447                         }
1448                 }
1449         }
1450 }
1451
1452 static void IDP_DirectLinkString(IDProperty *prop, int switch_endian, FileData *fd)
1453 {
1454         /*since we didn't save the extra string buffer, set totallen to len.*/
1455         prop->totallen = prop->len;
1456         prop->data.pointer = newdataadr(fd, prop->data.pointer);
1457 }
1458
1459 static void IDP_DirectLinkGroup(IDProperty *prop, int switch_endian, FileData *fd)
1460 {
1461         ListBase *lb = &prop->data.group;
1462         IDProperty *loop;
1463
1464         link_list(fd, lb);
1465
1466         /*Link child id properties now*/
1467         for (loop=prop->data.group.first; loop; loop=loop->next) {
1468                 IDP_DirectLinkProperty(loop, switch_endian, fd);
1469         }
1470 }
1471
1472 void IDP_DirectLinkProperty(IDProperty *prop, int switch_endian, FileData *fd)
1473 {
1474         switch (prop->type) {
1475                 case IDP_GROUP:
1476                         IDP_DirectLinkGroup(prop, switch_endian, fd);
1477                         break;
1478                 case IDP_STRING:
1479                         IDP_DirectLinkString(prop, switch_endian, fd);
1480                         break;
1481                 case IDP_ARRAY:
1482                         IDP_DirectLinkArray(prop, switch_endian, fd);
1483                         break;
1484                 case IDP_IDPARRAY:
1485                         IDP_DirectLinkIDPArray(prop, switch_endian, fd);
1486                         break;
1487                 case IDP_DOUBLE:
1488                         /*erg, stupid doubles.  since I'm storing them
1489                          in the same field as int val; val2 in the
1490                          IDPropertyData struct, they have to deal with
1491                          endianness specifically
1492                          
1493                          in theory, val and val2 would've already been swapped
1494                          if switch_endian is true, so we have to first unswap
1495                          them then reswap them as a single 64-bit entity.
1496                          */
1497                         
1498                         if (switch_endian) {
1499                                 SWITCH_INT(prop->data.val);
1500                                 SWITCH_INT(prop->data.val2);
1501                                 SWITCH_LONGINT(prop->data.val);
1502                         }
1503                         
1504                         break;
1505         }
1506 }
1507
1508 /*stub function*/
1509 void IDP_LibLinkProperty(IDProperty *prop, int switch_endian, FileData *fd)
1510 {
1511 }
1512
1513 /* ************ READ CurveMapping *************** */
1514
1515 /* cuma itself has been read! */
1516 static void direct_link_curvemapping(FileData *fd, CurveMapping *cumap)
1517 {
1518         int a;
1519         
1520         /* flag seems to be able to hang? Maybe old files... not bad to clear anyway */
1521         cumap->flag &= ~CUMA_PREMULLED;
1522         
1523         for(a=0; a<CM_TOT; a++) {
1524                 cumap->cm[a].curve= newdataadr(fd, cumap->cm[a].curve);
1525                 cumap->cm[a].table= NULL;
1526                 cumap->cm[a].premultable= NULL;
1527         }
1528 }
1529
1530 /* ************ READ Brush *************** */
1531 /* library brush linking after fileread */
1532 static void lib_link_brush(FileData *fd, Main *main)
1533 {
1534         Brush *brush;
1535         
1536         /* only link ID pointers */
1537         for(brush= main->brush.first; brush; brush= brush->id.next) {
1538                 if(brush->id.flag & LIB_NEEDLINK) {
1539                         brush->id.flag -= LIB_NEEDLINK;
1540
1541                         brush->mtex.tex= newlibadr_us(fd, brush->id.lib, brush->mtex.tex);
1542                         brush->image_icon= newlibadr_us(fd, brush->id.lib, brush->image_icon);
1543                         brush->clone.image= newlibadr_us(fd, brush->id.lib, brush->clone.image);
1544                 }
1545         }
1546 }
1547
1548 static void direct_link_brush(FileData *fd, Brush *brush)
1549 {
1550         /* brush itself has been read */
1551
1552         /* fallof curve */
1553         brush->curve= newdataadr(fd, brush->curve);
1554         if(brush->curve)
1555                 direct_link_curvemapping(fd, brush->curve);
1556         else
1557                 brush_curve_preset(brush, CURVE_PRESET_SHARP);
1558 }
1559
1560 static void direct_link_script(FileData *fd, Script *script)
1561 {
1562         script->id.us = 1;
1563         SCRIPT_SET_NULL(script)
1564 }
1565
1566
1567 /* ************ READ PACKEDFILE *************** */
1568
1569 static PackedFile *direct_link_packedfile(FileData *fd, PackedFile *oldpf)
1570 {
1571         PackedFile *pf= newdataadr(fd, oldpf);
1572
1573         if (pf) {
1574                 pf->data= newdataadr(fd, pf->data);
1575         }
1576
1577         return pf;
1578 }
1579
1580 /* ************ READ IMAGE PREVIEW *************** */
1581
1582 static PreviewImage *direct_link_preview_image(FileData *fd, PreviewImage *old_prv)
1583 {
1584         PreviewImage *prv= newdataadr(fd, old_prv);
1585
1586         if (prv) {
1587                 int i;
1588                 for (i=0; i < PREVIEW_MIPMAPS; ++i) {
1589                         if (prv->rect[i]) {
1590                                 prv->rect[i] = newdataadr(fd, prv->rect[i]);
1591                         }
1592                 }
1593         }
1594
1595         return prv;
1596 }
1597
1598 /* ************ READ ANIMATION STUFF ***************** */
1599
1600 /* Legacy Data Support (for Version Patching) ----------------------------- */
1601
1602 // XXX depreceated - old animation system
1603 static void lib_link_ipo(FileData *fd, Main *main)
1604 {
1605         Ipo *ipo;
1606
1607         ipo= main->ipo.first;
1608         while(ipo) {
1609                 if(ipo->id.flag & LIB_NEEDLINK) {
1610                         IpoCurve *icu;
1611                         for(icu= ipo->curve.first; icu; icu= icu->next) {
1612                                 if(icu->driver)
1613                                         icu->driver->ob= newlibadr(fd, ipo->id.lib, icu->driver->ob);
1614                         }
1615                         ipo->id.flag -= LIB_NEEDLINK;
1616                 }
1617                 ipo= ipo->id.next;
1618         }
1619 }
1620
1621 // XXX depreceated - old animation system
1622 static void direct_link_ipo(FileData *fd, Ipo *ipo)
1623 {
1624         IpoCurve *icu;
1625
1626         link_list(fd, &(ipo->curve));
1627         icu= ipo->curve.first;
1628         while(icu) {
1629                 icu->bezt= newdataadr(fd, icu->bezt);
1630                 icu->bp= newdataadr(fd, icu->bp);
1631                 icu->driver= newdataadr(fd, icu->driver);
1632                 icu= icu->next;
1633         }
1634 }
1635
1636 // XXX depreceated - old animation system
1637 static void lib_link_nlastrips(FileData *fd, ID *id, ListBase *striplist)
1638 {
1639         bActionStrip *strip;
1640         bActionModifier *amod;
1641         
1642         for (strip=striplist->first; strip; strip=strip->next){
1643                 strip->object = newlibadr(fd, id->lib, strip->object);
1644                 strip->act = newlibadr_us(fd, id->lib, strip->act);
1645                 strip->ipo = newlibadr(fd, id->lib, strip->ipo);
1646                 for(amod= strip->modifiers.first; amod; amod= amod->next)
1647                         amod->ob= newlibadr(fd, id->lib, amod->ob);
1648         }
1649 }
1650
1651 // XXX depreceated - old animation system
1652 static void direct_link_nlastrips(FileData *fd, ListBase *strips)
1653 {
1654         bActionStrip *strip;
1655         
1656         link_list(fd, strips);
1657         
1658         for(strip= strips->first; strip; strip= strip->next)
1659                 link_list(fd, &strip->modifiers);
1660 }
1661
1662 // XXX depreceated - old animation system
1663 static void lib_link_constraint_channels(FileData *fd, ID *id, ListBase *chanbase)
1664 {
1665         bConstraintChannel *chan;
1666
1667         for (chan=chanbase->first; chan; chan=chan->next){
1668                 chan->ipo = newlibadr_us(fd, id->lib, chan->ipo);
1669         }
1670 }
1671
1672 /* Data Linking ----------------------------- */
1673
1674 static void lib_link_fmodifiers(FileData *fd, ID *id, ListBase *list)
1675 {
1676         FModifier *fcm;
1677         
1678         for (fcm= list->first; fcm; fcm= fcm->next) {
1679                 /* data for specific modifiers */
1680                 switch (fcm->type) {
1681                         case FMODIFIER_TYPE_PYTHON:
1682                         {
1683                                 FMod_Python *data= (FMod_Python *)fcm->data;
1684                                 data->script = newlibadr(fd, id->lib, data->script);
1685                         }
1686                                 break;
1687                 }
1688         }
1689 }
1690
1691 static void lib_link_fcurves(FileData *fd, ID *id, ListBase *list) 
1692 {
1693         FCurve *fcu;
1694         
1695         if (list == NULL)
1696                 return;
1697         
1698         /* relink ID-block references... */
1699         for (fcu= list->first; fcu; fcu= fcu->next) {
1700                 /* driver data */
1701                 if (fcu->driver) {
1702                         ChannelDriver *driver= fcu->driver;
1703                         DriverVar *dvar;
1704                         
1705                         for (dvar= driver->variables.first; dvar; dvar= dvar->next) {
1706                                 DRIVER_TARGETS_LOOPER(dvar)
1707                                 {       
1708                                         /* only relink if still used */
1709                                         if (tarIndex < dvar->num_targets)
1710                                                 dtar->id= newlibadr(fd, id->lib, dtar->id); 
1711                                         else
1712                                                 dtar->id= NULL;
1713                                 }
1714                                 DRIVER_TARGETS_LOOPER_END
1715                         }
1716                 }
1717                 
1718                 /* modifiers */
1719                 lib_link_fmodifiers(fd, id, &fcu->modifiers);
1720         }
1721 }
1722
1723
1724 /* NOTE: this assumes that link_list has already been called on the list */
1725 static void direct_link_fmodifiers(FileData *fd, ListBase *list)
1726 {
1727         FModifier *fcm;
1728         
1729         for (fcm= list->first; fcm; fcm= fcm->next) {
1730                 /* relink general data */
1731                 fcm->data = newdataadr(fd, fcm->data);
1732                 fcm->edata= NULL;
1733                 
1734                 /* do relinking of data for specific types */
1735                 switch (fcm->type) {
1736                         case FMODIFIER_TYPE_GENERATOR:
1737                         {
1738                                 FMod_Generator *data= (FMod_Generator *)fcm->data;
1739                                 
1740                                 data->coefficients= newdataadr(fd, data->coefficients);
1741                         }
1742                                 break;
1743                         case FMODIFIER_TYPE_ENVELOPE:
1744                         {
1745                                 FMod_Envelope *data= (FMod_Envelope *)fcm->data;
1746                                 
1747                                 data->data= newdataadr(fd, data->data);
1748                         }
1749                                 break;
1750                         case FMODIFIER_TYPE_PYTHON:
1751                         {
1752                                 FMod_Python *data= (FMod_Python *)fcm->data;
1753                                 
1754                                 data->prop = newdataadr(fd, data->prop);
1755                                 IDP_DirectLinkProperty(data->prop, (fd->flags & FD_FLAGS_SWITCH_ENDIAN), fd);
1756                         }
1757                                 break;
1758                 }
1759         }
1760 }
1761
1762 /* NOTE: this assumes that link_list has already been called on the list */
1763 static void direct_link_fcurves(FileData *fd, ListBase *list)
1764 {
1765         FCurve *fcu;
1766         
1767         /* link F-Curve data to F-Curve again (non ID-libs) */
1768         for (fcu= list->first; fcu; fcu= fcu->next) {
1769                 /* curve data */
1770                 fcu->bezt= newdataadr(fd, fcu->bezt);
1771                 fcu->fpt= newdataadr(fd, fcu->fpt);
1772                 
1773                 /* rna path */
1774                 fcu->rna_path= newdataadr(fd, fcu->rna_path);
1775                 
1776                 /* group */
1777                 fcu->grp= newdataadr(fd, fcu->grp);
1778                 
1779                 /* driver */
1780                 fcu->driver= newdataadr(fd, fcu->driver);
1781                 if (fcu->driver) {
1782                         ChannelDriver *driver= fcu->driver;
1783                         DriverVar *dvar;
1784
1785                         driver->expr_comp= NULL;
1786                         
1787                         /* relink variables, targets and their paths */
1788                         link_list(fd, &driver->variables);
1789                         for (dvar= driver->variables.first; dvar; dvar= dvar->next) {
1790                                 DRIVER_TARGETS_LOOPER(dvar)
1791                                 {
1792                                         /* only relink the targets being used */
1793                                         if (tarIndex < dvar->num_targets)
1794                                                 dtar->rna_path= newdataadr(fd, dtar->rna_path);
1795                                         else
1796                                                 dtar->rna_path= NULL;
1797                                 }
1798                                 DRIVER_TARGETS_LOOPER_END
1799                         }
1800                 }
1801                 
1802                 /* modifiers */
1803                 link_list(fd, &fcu->modifiers);
1804                 direct_link_fmodifiers(fd, &fcu->modifiers);
1805         }
1806 }
1807
1808
1809 static void lib_link_action(FileData *fd, Main *main)
1810 {
1811         bAction *act;
1812         bActionChannel *chan;
1813
1814         for (act= main->action.first; act; act= act->id.next) {
1815                 if (act->id.flag & LIB_NEEDLINK) {
1816                         act->id.flag -= LIB_NEEDLINK;
1817                         
1818 // XXX depreceated - old animation system <<<
1819                         for (chan=act->chanbase.first; chan; chan=chan->next) {
1820                                 chan->ipo= newlibadr_us(fd, act->id.lib, chan->ipo);
1821                                 lib_link_constraint_channels(fd, &act->id, &chan->constraintChannels);
1822                         }
1823 // >>> XXX depreceated - old animation system
1824                         
1825                         lib_link_fcurves(fd, &act->id, &act->curves);
1826                 }
1827         }
1828 }
1829
1830 static void direct_link_action(FileData *fd, bAction *act)
1831 {
1832         bActionChannel *achan; // XXX depreceated - old animation system
1833         bActionGroup *agrp;
1834
1835         link_list(fd, &act->curves);
1836         link_list(fd, &act->chanbase); // XXX depreceated - old animation system
1837         link_list(fd, &act->groups);
1838         link_list(fd, &act->markers);
1839
1840 // XXX depreceated - old animation system <<<
1841         for (achan = act->chanbase.first; achan; achan=achan->next) {
1842                 achan->grp= newdataadr(fd, achan->grp);
1843                 
1844                 link_list(fd, &achan->constraintChannels);
1845         }
1846 // >>> XXX depreceated - old animation system
1847
1848         direct_link_fcurves(fd, &act->curves);
1849         
1850         for (agrp = act->groups.first; agrp; agrp= agrp->next) {
1851                 agrp->channels.first= newdataadr(fd, agrp->channels.first);
1852                 agrp->channels.last= newdataadr(fd, agrp->channels.last);
1853         }
1854 }
1855
1856 static void lib_link_nladata_strips(FileData *fd, ID *id, ListBase *list)
1857 {
1858         NlaStrip *strip;
1859         
1860         for (strip= list->first; strip; strip= strip->next) {
1861                 /* check strip's children */
1862                 lib_link_nladata_strips(fd, id, &strip->strips);
1863                 
1864                 /* check strip's F-Curves */
1865                 lib_link_fcurves(fd, id, &strip->fcurves);
1866                 
1867                 /* reassign the counted-reference to action */
1868                 strip->act = newlibadr_us(fd, id->lib, strip->act);
1869         }
1870 }
1871
1872 static void lib_link_nladata(FileData *fd, ID *id, ListBase *list)
1873 {
1874         NlaTrack *nlt;
1875         
1876         /* we only care about the NLA strips inside the tracks */
1877         for (nlt= list->first; nlt; nlt= nlt->next) {
1878                 lib_link_nladata_strips(fd, id, &nlt->strips);
1879         }
1880 }
1881
1882 /* This handles Animato NLA-Strips linking 
1883  * NOTE: this assumes that link_list has already been called on the list 
1884  */
1885 static void direct_link_nladata_strips(FileData *fd, ListBase *list)
1886 {
1887         NlaStrip *strip;
1888         
1889         for (strip= list->first; strip; strip= strip->next) {
1890                 /* strip's child strips */
1891                 link_list(fd, &strip->strips);
1892                 direct_link_nladata_strips(fd, &strip->strips);
1893                 
1894                 /* strip's F-Curves */
1895                 link_list(fd, &strip->fcurves);
1896                 direct_link_fcurves(fd, &strip->fcurves);
1897                 
1898                 /* strip's F-Modifiers */
1899                 link_list(fd, &strip->modifiers);
1900                 direct_link_fcurves(fd, &strip->modifiers);
1901         }
1902 }
1903
1904 /* NOTE: this assumes that link_list has already been called on the list */
1905 static void direct_link_nladata(FileData *fd, ListBase *list)
1906 {
1907         NlaTrack *nlt;
1908         
1909         for (nlt= list->first; nlt; nlt= nlt->next) {
1910                 /* relink list of strips */
1911                 link_list(fd, &nlt->strips);
1912                 
1913                 /* relink strip data */
1914                 direct_link_nladata_strips(fd, &nlt->strips);
1915         }
1916 }
1917
1918 /* ------- */
1919
1920 static void lib_link_keyingsets(FileData *fd, ID *id, ListBase *list)
1921 {
1922         KeyingSet *ks;
1923         KS_Path *ksp;
1924         
1925         /* here, we're only interested in the ID pointer stored in some of the paths */
1926         for (ks= list->first; ks; ks= ks->next) {
1927                 for (ksp= ks->paths.first; ksp; ksp= ksp->next) {
1928                         ksp->id= newlibadr(fd, id->lib, ksp->id); 
1929                 }
1930         }
1931 }
1932
1933 /* NOTE: this assumes that link_list has already been called on the list */
1934 static void direct_link_keyingsets(FileData *fd, ListBase *list)
1935 {
1936         KeyingSet *ks;
1937         KS_Path *ksp;
1938         
1939         /* link KeyingSet data to KeyingSet again (non ID-libs) */
1940         for (ks= list->first; ks; ks= ks->next) {
1941                 /* paths */
1942                 link_list(fd, &ks->paths);
1943                 
1944                 for (ksp= ks->paths.first; ksp; ksp= ksp->next) {
1945                         /* rna path */
1946                         ksp->rna_path= newdataadr(fd, ksp->rna_path);
1947                 }
1948         }
1949 }
1950
1951 /* ------- */
1952
1953 static void lib_link_animdata(FileData *fd, ID *id, AnimData *adt)
1954 {
1955         if (adt == NULL)
1956                 return;
1957         
1958         /* link action data */
1959         adt->action= newlibadr_us(fd, id->lib, adt->action);
1960         adt->tmpact= newlibadr_us(fd, id->lib, adt->tmpact);
1961         
1962         /* link drivers */
1963         lib_link_fcurves(fd, id, &adt->drivers);
1964         
1965         /* overrides don't have lib-link for now, so no need to do anything */
1966         
1967         /* link NLA-data */
1968         lib_link_nladata(fd, id, &adt->nla_tracks);
1969 }
1970
1971 static void direct_link_animdata(FileData *fd, AnimData *adt)
1972 {
1973         /* NOTE: must have called newdataadr already before doing this... */
1974         if (adt == NULL)
1975                 return;
1976         
1977         /* link drivers */
1978         link_list(fd, &adt->drivers);
1979         direct_link_fcurves(fd, &adt->drivers);
1980         
1981         /* link overrides */
1982         // TODO...
1983         
1984         /* link NLA-data */
1985         link_list(fd, &adt->nla_tracks);
1986         direct_link_nladata(fd, &adt->nla_tracks);
1987         
1988         /* clear temp pointers that may have been set... */
1989         // TODO: it's probably only a small cost to reload this anyway...
1990         adt->actstrip= NULL;
1991 }       
1992
1993 /* ************ READ MOTION PATHS *************** */
1994
1995 /* direct data for cache */
1996 static void direct_link_motionpath(FileData *fd, bMotionPath *mpath)
1997 {
1998         /* sanity check */
1999         if (mpath == NULL)
2000                 return;
2001         
2002         /* relink points cache */
2003         mpath->points= newdataadr(fd, mpath->points);
2004 }
2005
2006 /* ************ READ NODE TREE *************** */
2007
2008 /* singe node tree (also used for material/scene trees), ntree is not NULL */
2009 static void lib_link_ntree(FileData *fd, ID *id, bNodeTree *ntree)
2010 {
2011         bNode *node;
2012         
2013         if(ntree->adt) lib_link_animdata(fd, &ntree->id, ntree->adt);
2014         
2015         ntree->gpd= newlibadr_us(fd, id->lib, ntree->gpd);
2016         
2017         for(node= ntree->nodes.first; node; node= node->next)
2018                 node->id= newlibadr_us(fd, id->lib, node->id);
2019 }
2020
2021 /* library ntree linking after fileread */
2022 static void lib_link_nodetree(FileData *fd, Main *main)
2023 {
2024         bNodeTree *ntree;
2025         
2026         /* only link ID pointers */
2027         for(ntree= main->nodetree.first; ntree; ntree= ntree->id.next) {
2028                 if(ntree->id.flag & LIB_NEEDLINK) {
2029                         ntree->id.flag -= LIB_NEEDLINK;
2030                         lib_link_ntree(fd, &ntree->id, ntree);
2031                 }
2032         }
2033 }
2034
2035 /* verify types for nodes and groups, all data has to be read */
2036 /* open = 0: appending/linking, open = 1: open new file (need to clean out dynamic
2037 * typedefs*/
2038 static void lib_verify_nodetree(Main *main, int open)
2039 {
2040         Scene *sce;
2041         Material *ma;
2042         Tex *tx;
2043         bNodeTree *ntree;
2044         
2045         /* this crashes blender on undo/redo
2046                 if(open==1) {
2047                         reinit_nodesystem();
2048                 }*/
2049         
2050         /* now create the own typeinfo structs an verify nodes */
2051         /* here we still assume no groups in groups */
2052         for(ntree= main->nodetree.first; ntree; ntree= ntree->id.next) {
2053                 ntreeVerifyTypes(ntree);        /* internal nodes, no groups! */
2054                 ntreeMakeOwnType(ntree);        /* for group usage */
2055         }
2056         
2057         /* now verify all types in material trees, groups are set OK now */
2058         for(ma= main->mat.first; ma; ma= ma->id.next) {
2059                 if(ma->nodetree)
2060                         ntreeVerifyTypes(ma->nodetree);
2061         }
2062         /* and scene trees */
2063         for(sce= main->scene.first; sce; sce= sce->id.next) {
2064                 if(sce->nodetree)
2065                         ntreeVerifyTypes(sce->nodetree);
2066         }
2067         /* and texture trees */
2068         for(tx= main->tex.first; tx; tx= tx->id.next) {
2069                 if(tx->nodetree)
2070                         ntreeVerifyTypes(tx->nodetree);
2071         }
2072 }
2073
2074
2075
2076 /* ntree itself has been read! */
2077 static void direct_link_nodetree(FileData *fd, bNodeTree *ntree)
2078 {
2079         /* note: writing and reading goes in sync, for speed */
2080         bNode *node;
2081         bNodeSocket *sock;
2082         bNodeLink *link;
2083         
2084         ntree->init= 0;         /* to set callbacks and force setting types */
2085         ntree->owntype= NULL;
2086         ntree->progress= NULL;
2087         
2088         ntree->adt= newdataadr(fd, ntree->adt);
2089         direct_link_animdata(fd, ntree->adt);
2090         
2091         link_list(fd, &ntree->nodes);
2092         for(node= ntree->nodes.first; node; node= node->next) {
2093                 if(node->type == NODE_DYNAMIC) {
2094                         node->custom1= 0;
2095                         node->custom1= BSET(node->custom1, NODE_DYNAMIC_LOADED);
2096                         node->typeinfo= NULL;
2097                 }
2098                 
2099                 node->storage= newdataadr(fd, node->storage);
2100                 if(node->storage) {
2101                         
2102                         /* could be handlerized at some point */
2103                         if(ntree->type==NTREE_SHADER && (node->type==SH_NODE_CURVE_VEC || node->type==SH_NODE_CURVE_RGB))
2104                                 direct_link_curvemapping(fd, node->storage);
2105                         else if(ntree->type==NTREE_COMPOSIT) {
2106                                 if( ELEM4(node->type, CMP_NODE_TIME, CMP_NODE_CURVE_VEC, CMP_NODE_CURVE_RGB, CMP_NODE_HUECORRECT))
2107                                         direct_link_curvemapping(fd, node->storage);
2108                                 else if(ELEM3(node->type, CMP_NODE_IMAGE, CMP_NODE_VIEWER, CMP_NODE_SPLITVIEWER))
2109                                         ((ImageUser *)node->storage)->ok= 1;
2110                         }
2111                         else if( ntree->type==NTREE_TEXTURE && (node->type==TEX_NODE_CURVE_RGB || node->type==TEX_NODE_CURVE_TIME) ) {
2112                                 direct_link_curvemapping(fd, node->storage);
2113                         }
2114                 }
2115                 link_list(fd, &node->inputs);
2116                 link_list(fd, &node->outputs);
2117         }
2118         link_list(fd, &ntree->links);
2119         
2120         /* and we connect the rest */
2121         for(node= ntree->nodes.first; node; node= node->next) {
2122                 node->preview= newimaadr(fd, node->preview);
2123                 node->lasty= 0;
2124                 for(sock= node->inputs.first; sock; sock= sock->next)
2125                         sock->link= newdataadr(fd, sock->link);
2126                 for(sock= node->outputs.first; sock; sock= sock->next)
2127                         sock->ns.data= NULL;
2128         }
2129         for(link= ntree->links.first; link; link= link->next) {
2130                 link->fromnode= newdataadr(fd, link->fromnode);
2131                 link->tonode= newdataadr(fd, link->tonode);
2132                 link->fromsock= newdataadr(fd, link->fromsock);
2133                 link->tosock= newdataadr(fd, link->tosock);
2134         }
2135                 
2136         /* type verification is in lib-link */
2137 }
2138
2139 /* ************ READ ARMATURE ***************** */
2140
2141 /* temp struct used to transport needed info to lib_link_constraint_cb() */
2142 typedef struct tConstraintLinkData {
2143         FileData *fd;
2144         ID *id;
2145 } tConstraintLinkData;
2146 /* callback function used to relink constraint ID-links */
2147 static void lib_link_constraint_cb(bConstraint *con, ID **idpoin, void *userdata)
2148 {
2149         tConstraintLinkData *cld= (tConstraintLinkData *)userdata;
2150         *idpoin = newlibadr(cld->fd, cld->id->lib, *idpoin);
2151 }
2152
2153 static void lib_link_constraints(FileData *fd, ID *id, ListBase *conlist)
2154 {
2155         tConstraintLinkData cld;
2156         bConstraint *con;
2157         
2158         /* legacy fixes */
2159         for (con = conlist->first; con; con=con->next) {
2160                 /* patch for error introduced by changing constraints (dunno how) */
2161                 /* if con->data type changes, dna cannot resolve the pointer! (ton) */
2162                 if(con->data==NULL) {
2163                         con->type= CONSTRAINT_TYPE_NULL;
2164                 }
2165                 /* own ipo, all constraints have it */
2166                 con->ipo= newlibadr_us(fd, id->lib, con->ipo); // XXX depreceated - old animation system
2167         }
2168         
2169         /* relink all ID-blocks used by the constraints */
2170         cld.fd= fd;
2171         cld.id= id;
2172         
2173         id_loop_constraints(conlist, lib_link_constraint_cb, &cld);
2174 }
2175
2176 static void direct_link_constraints(FileData *fd, ListBase *lb)
2177 {
2178         bConstraint *con;
2179
2180         link_list(fd, lb);
2181         for (con=lb->first; con; con=con->next) {
2182                 con->data = newdataadr(fd, con->data);
2183                 
2184                 switch (con->type) {
2185                         case CONSTRAINT_TYPE_PYTHON:
2186                         {
2187                                 bPythonConstraint *data= con->data;
2188                                 
2189                                 link_list(fd, &data->targets);
2190                                 
2191                                 data->prop = newdataadr(fd, data->prop);
2192                                 if (data->prop)
2193                                         IDP_DirectLinkProperty(data->prop, (fd->flags & FD_FLAGS_SWITCH_ENDIAN), fd);
2194                         }
2195                                 break;
2196                         case CONSTRAINT_TYPE_SPLINEIK:
2197                         {
2198                                 bSplineIKConstraint *data= con->data;
2199                                 
2200                                 data->points= newdataadr(fd, data->points);
2201                         }
2202                                 break;
2203                         case CONSTRAINT_TYPE_KINEMATIC:
2204                         {
2205                                 con->lin_error = 0.f;
2206                                 con->rot_error = 0.f;
2207                         }
2208                                 break;
2209                 }
2210         }
2211 }
2212
2213 static void lib_link_pose(FileData *fd, Object *ob, bPose *pose)
2214 {
2215         bPoseChannel *pchan;
2216         bArmature *arm= ob->data;
2217         int rebuild;
2218         
2219         if (!pose || !arm)
2220                 return;
2221         
2222         /* always rebuild to match proxy or lib changes */
2223         rebuild= ob->proxy || (ob->id.lib==NULL && arm->id.lib);
2224
2225         if (ob->proxy && pose->proxy_act_bone[0]) {
2226                 Bone *bone = get_named_bone(arm, pose->proxy_act_bone);
2227                 if (bone)
2228                         arm->act_bone = bone;
2229         }
2230
2231         for (pchan = pose->chanbase.first; pchan; pchan=pchan->next) {
2232                 lib_link_constraints(fd, (ID *)ob, &pchan->constraints);
2233                 
2234                 /* hurms... loop in a loop, but yah... later... (ton) */
2235                 pchan->bone= get_named_bone(arm, pchan->name);
2236                 
2237                 pchan->custom= newlibadr(fd, arm->id.lib, pchan->custom);
2238                 if(pchan->bone==NULL)
2239                         rebuild= 1;
2240                 else if(ob->id.lib==NULL && arm->id.lib) {
2241                         /* local pose selection copied to armature, bit hackish */
2242                         pchan->bone->flag &= ~BONE_SELECTED;
2243                         pchan->bone->flag |= pchan->selectflag;
2244                 }
2245         }
2246         
2247         if(rebuild) {
2248                 ob->recalc= OB_RECALC_ALL;
2249                 pose->flag |= POSE_RECALC;
2250         }
2251 }
2252
2253 static void lib_link_armature(FileData *fd, Main *main)
2254 {
2255         bArmature *arm;
2256
2257         arm= main->armature.first;
2258
2259         while(arm) {
2260                 if(arm->id.flag & LIB_NEEDLINK) {
2261                         if (arm->adt) lib_link_animdata(fd, &arm->id, arm->adt);
2262                         arm->id.flag -= LIB_NEEDLINK;
2263                 }
2264                 arm= arm->id.next;
2265         }
2266 }
2267
2268 static void direct_link_bones(FileData *fd, Bone* bone)
2269 {
2270         Bone    *child;
2271
2272         bone->parent= newdataadr(fd, bone->parent);
2273         bone->prop= newdataadr(fd, bone->prop);
2274         if(bone->prop)
2275                 IDP_DirectLinkProperty(bone->prop, (fd->flags & FD_FLAGS_SWITCH_ENDIAN), fd);
2276                 
2277         bone->flag &= ~BONE_DRAW_ACTIVE;
2278
2279         link_list(fd, &bone->childbase);
2280
2281         for(child=bone->childbase.first; child; child=child->next)
2282                 direct_link_bones(fd, child);
2283 }
2284
2285 static void direct_link_armature(FileData *fd, bArmature *arm)
2286 {
2287         Bone    *bone;
2288
2289         link_list(fd, &arm->bonebase);
2290         arm->edbo= NULL;
2291         arm->sketch = NULL;
2292         
2293         arm->adt= newdataadr(fd, arm->adt);
2294         direct_link_animdata(fd, arm->adt);
2295         
2296         bone=arm->bonebase.first;
2297         while (bone) {
2298                 direct_link_bones(fd, bone);
2299                 bone=bone->next;
2300         }
2301
2302         arm->act_bone= newdataadr(fd, arm->act_bone);
2303         arm->act_edbone= NULL;
2304 }
2305
2306 /* ************ READ CAMERA ***************** */
2307
2308 static void lib_link_camera(FileData *fd, Main *main)
2309 {
2310         Camera *ca;
2311
2312         ca= main->camera.first;
2313         while(ca) {
2314                 if(ca->id.flag & LIB_NEEDLINK) {
2315                         if (ca->adt) lib_link_animdata(fd, &ca->id, ca->adt);
2316                         
2317                         ca->ipo= newlibadr_us(fd, ca->id.lib, ca->ipo); // XXX depreceated - old animation system
2318                         
2319                         ca->dof_ob= newlibadr_us(fd, ca->id.lib, ca->dof_ob);
2320                         
2321                         ca->id.flag -= LIB_NEEDLINK;
2322                 }
2323                 ca= ca->id.next;
2324         }
2325 }
2326
2327 static void direct_link_camera(FileData *fd, Camera *ca)
2328 {
2329         ca->adt= newdataadr(fd, ca->adt);
2330         direct_link_animdata(fd, ca->adt);
2331 }
2332
2333
2334 /* ************ READ LAMP ***************** */
2335
2336 static void lib_link_lamp(FileData *fd, Main *main)
2337 {
2338         Lamp *la;
2339         MTex *mtex;
2340         int a;
2341
2342         la= main->lamp.first;
2343         while(la) {
2344                 if(la->id.flag & LIB_NEEDLINK) {
2345                         if (la->adt) lib_link_animdata(fd, &la->id, la->adt);
2346                         
2347                         for(a=0; a<MAX_MTEX; a++) {
2348                                 mtex= la->mtex[a];
2349                                 if(mtex) {
2350                                         mtex->tex= newlibadr_us(fd, la->id.lib, mtex->tex);
2351                                         mtex->object= newlibadr(fd, la->id.lib, mtex->object);
2352                                 }
2353                         }
2354                         
2355                         la->ipo= newlibadr_us(fd, la->id.lib, la->ipo); // XXX depreceated - old animation system
2356                         
2357                         la->id.flag -= LIB_NEEDLINK;
2358                 }
2359                 la= la->id.next;
2360         }
2361 }
2362
2363 static void direct_link_lamp(FileData *fd, Lamp *la)
2364 {
2365         int a;
2366         
2367         la->adt= newdataadr(fd, la->adt);
2368         direct_link_animdata(fd, la->adt);
2369
2370         for(a=0; a<MAX_MTEX; a++) {
2371                 la->mtex[a]= newdataadr(fd, la->mtex[a]);
2372         }
2373         
2374         la->curfalloff= newdataadr(fd, la->curfalloff);
2375         if(la->curfalloff)
2376                 direct_link_curvemapping(fd, la->curfalloff);
2377         
2378         la->preview = direct_link_preview_image(fd, la->preview);
2379 }
2380
2381 /* ************ READ keys ***************** */
2382
2383 static void lib_link_key(FileData *fd, Main *main)
2384 {
2385         Key *key;
2386
2387         key= main->key.first;
2388         while(key) {
2389                 if(key->id.flag & LIB_NEEDLINK) {
2390                         if(key->adt) lib_link_animdata(fd, &key->id, key->adt);
2391                         
2392                         key->ipo= newlibadr_us(fd, key->id.lib, key->ipo); // XXX depreceated - old animation system
2393                         key->from= newlibadr(fd, key->id.lib, key->from);
2394
2395                         key->id.flag -= LIB_NEEDLINK;
2396                 }
2397                 key= key->id.next;
2398         }
2399 }
2400
2401 static void switch_endian_keyblock(Key *key, KeyBlock *kb)
2402 {
2403         int elemsize, a, b;
2404         char *data, *poin, *cp;
2405
2406         elemsize= key->elemsize;
2407         data= kb->data;
2408
2409         for(a=0; a<kb->totelem; a++) {
2410
2411                 cp= key->elemstr;
2412                 poin= data;
2413
2414                 while( cp[0] ) {        /* cp[0]==amount */
2415
2416                         switch(cp[1]) {         /* cp[1]= type */
2417                         case IPO_FLOAT:
2418                         case IPO_BPOINT:
2419                         case IPO_BEZTRIPLE:
2420                                 b= cp[0];
2421                                 while(b--) {
2422                                         SWITCH_INT((*poin));
2423                                         poin+= 4;
2424                                 }
2425                                 break;
2426                         }
2427
2428                         cp+= 2;
2429
2430                 }
2431                 data+= elemsize;
2432         }
2433 }
2434
2435 static void direct_link_key(FileData *fd, Key *key)
2436 {
2437         KeyBlock *kb;
2438
2439         link_list(fd, &(key->block));
2440
2441         key->adt= newdataadr(fd, key->adt);
2442         direct_link_animdata(fd, key->adt);
2443         
2444         key->refkey= newdataadr(fd, key->refkey);
2445
2446         kb= key->block.first;
2447         while(kb) {
2448
2449                 kb->data= newdataadr(fd, kb->data);
2450
2451                 if(fd->flags & FD_FLAGS_SWITCH_ENDIAN)
2452                         switch_endian_keyblock(key, kb);
2453
2454                 kb= kb->next;
2455         }
2456 }
2457
2458 /* ************ READ mball ***************** */
2459
2460 static void lib_link_mball(FileData *fd, Main *main)
2461 {
2462         MetaBall *mb;
2463         int a;
2464
2465         mb= main->mball.first;
2466         while(mb) {
2467                 if(mb->id.flag & LIB_NEEDLINK) {
2468                         if (mb->adt) lib_link_animdata(fd, &mb->id, mb->adt);
2469                         
2470                         for(a=0; a<mb->totcol; a++) mb->mat[a]= newlibadr_us(fd, mb->id.lib, mb->mat[a]);
2471
2472                         mb->ipo= newlibadr_us(fd, mb->id.lib, mb->ipo); // XXX depreceated - old animation system
2473
2474                         mb->id.flag -= LIB_NEEDLINK;
2475                 }
2476                 mb= mb->id.next;
2477         }
2478 }
2479
2480 static void direct_link_mball(FileData *fd, MetaBall *mb)
2481 {
2482         mb->adt= newdataadr(fd, mb->adt);
2483         direct_link_animdata(fd, mb->adt);
2484         
2485         mb->mat= newdataadr(fd, mb->mat);
2486         test_pointer_array(fd, (void **)&mb->mat);
2487
2488         link_list(fd, &(mb->elems));
2489
2490         mb->disp.first= mb->disp.last= NULL;
2491         mb->editelems= NULL;
2492         mb->bb= NULL;
2493 /*      mb->edit_elems.first= mb->edit_elems.last= NULL;*/
2494         mb->lastelem= NULL;
2495 }
2496
2497 /* ************ READ WORLD ***************** */
2498
2499 static void lib_link_world(FileData *fd, Main *main)
2500 {
2501         World *wrld;
2502         MTex *mtex;
2503         int a;
2504
2505         wrld= main->world.first;
2506         while(wrld) {
2507                 if(wrld->id.flag & LIB_NEEDLINK) {
2508                         if (wrld->adt) lib_link_animdata(fd, &wrld->id, wrld->adt);
2509                         
2510                         wrld->ipo= newlibadr_us(fd, wrld->id.lib, wrld->ipo); // XXX depreceated - old animation system
2511                         
2512                         for(a=0; a<MAX_MTEX; a++) {
2513                                 mtex= wrld->mtex[a];
2514                                 if(mtex) {
2515                                         mtex->tex= newlibadr_us(fd, wrld->id.lib, mtex->tex);
2516                                         mtex->object= newlibadr(fd, wrld->id.lib, mtex->object);
2517                                 }
2518                         }
2519                         
2520                         wrld->id.flag -= LIB_NEEDLINK;
2521                 }
2522                 wrld= wrld->id.next;
2523         }
2524 }
2525
2526 static void direct_link_world(FileData *fd, World *wrld)
2527 {
2528         int a;
2529
2530         wrld->adt= newdataadr(fd, wrld->adt);
2531         direct_link_animdata(fd, wrld->adt);
2532
2533         for(a=0; a<MAX_MTEX; a++) {
2534                 wrld->mtex[a]= newdataadr(fd, wrld->mtex[a]);
2535         }
2536         wrld->preview = direct_link_preview_image(fd, wrld->preview);
2537 }
2538
2539
2540 /* ************ READ VFONT ***************** */
2541
2542 static void lib_link_vfont(FileData *fd, Main *main)
2543 {
2544         VFont *vf;
2545
2546         vf= main->vfont.first;
2547         while(vf) {
2548                 if(vf->id.flag & LIB_NEEDLINK) {
2549                         vf->id.flag -= LIB_NEEDLINK;
2550                 }
2551                 vf= vf->id.next;
2552         }
2553 }
2554
2555 static void direct_link_vfont(FileData *fd, VFont *vf)
2556 {
2557         vf->data= NULL;
2558         vf->packedfile= direct_link_packedfile(fd, vf->packedfile);
2559 }
2560
2561 /* ************ READ TEXT ****************** */
2562
2563 static void lib_link_text(FileData *fd, Main *main)
2564 {
2565         Text *text;
2566
2567         text= main->text.first;
2568         while(text) {
2569                 if(text->id.flag & LIB_NEEDLINK) {
2570                         text->id.flag -= LIB_NEEDLINK;
2571                 }
2572                 text= text->id.next;
2573         }
2574 }
2575
2576 static void direct_link_text(FileData *fd, Text *text)
2577 {
2578         TextLine *ln;
2579
2580         text->name= newdataadr(fd, text->name);
2581
2582         text->undo_pos= -1;
2583         text->undo_len= TXT_INIT_UNDO;
2584         text->undo_buf= MEM_mallocN(text->undo_len, "undo buf");
2585
2586         text->compiled= NULL;
2587
2588 /*
2589         if(text->flags & TXT_ISEXT) {
2590                 reopen_text(text);
2591         } else {
2592 */
2593
2594         link_list(fd, &text->lines);
2595         link_list(fd, &text->markers);
2596
2597         text->curl= newdataadr(fd, text->curl);
2598         text->sell= newdataadr(fd, text->sell);
2599
2600         ln= text->lines.first;
2601         while(ln) {
2602                 ln->line= newdataadr(fd, ln->line);
2603                 ln->format= NULL;
2604                 
2605                 if (ln->len != (int) strlen(ln->line)) {
2606                         printf("Error loading text, line lengths differ\n");
2607                         ln->len = strlen(ln->line);
2608                 }
2609
2610                 ln= ln->next;
2611         }
2612
2613         text->flags = (text->flags) & ~TXT_ISEXT;
2614
2615         text->id.us= 1;
2616 }
2617
2618 /* ************ READ IMAGE ***************** */
2619
2620 static void lib_link_image(FileData *fd, Main *main)
2621 {
2622         Image *ima;
2623
2624         ima= main->image.first;
2625         while (ima) {
2626                 if(ima->id.flag & LIB_NEEDLINK) {
2627                         if (ima->id.properties) IDP_LibLinkProperty(ima->id.properties, (fd->flags & FD_FLAGS_SWITCH_ENDIAN), fd);
2628
2629                         ima->id.flag -= LIB_NEEDLINK;
2630                 }
2631                 ima= ima->id.next;
2632         }
2633 }
2634
2635 static void link_ibuf_list(FileData *fd, ListBase *lb)
2636 {
2637         Link *ln, *prev;
2638         
2639         if(lb->first==NULL) return;
2640         
2641         lb->first= newimaadr(fd, lb->first);
2642         ln= lb->first;
2643         prev= NULL;
2644         while(ln) {
2645                 ln->next= newimaadr(fd, ln->next);
2646                 ln->prev= prev;
2647                 prev= ln;
2648                 ln= ln->next;
2649         }
2650         lb->last= prev;
2651 }
2652
2653 static void direct_link_image(FileData *fd, Image *ima)
2654 {
2655         /* for undo system, pointers could be restored */
2656         if(fd->imamap)
2657                 link_ibuf_list(fd, &ima->ibufs);
2658         else
2659                 ima->ibufs.first= ima->ibufs.last= NULL;
2660         
2661         /* if not restored, we keep the binded opengl index */
2662         if(ima->ibufs.first==NULL) {
2663                 ima->bindcode= 0;
2664                 ima->gputexture= NULL;
2665         }
2666         
2667         ima->anim= NULL;
2668         ima->rr= NULL;
2669         ima->repbind= NULL;
2670         memset(ima->renders, 0, sizeof(ima->renders));
2671         ima->last_render_slot= ima->render_slot;
2672         
2673         ima->packedfile = direct_link_packedfile(fd, ima->packedfile);
2674         ima->preview = direct_link_preview_image(fd, ima->preview);
2675         ima->ok= 1;
2676 }
2677
2678
2679 /* ************ READ CURVE ***************** */
2680
2681 static void lib_link_curve(FileData *fd, Main *main)
2682 {
2683         Curve *cu;
2684         int a;
2685
2686         cu= main->curve.first;
2687         while(cu) {
2688                 if(cu->id.flag & LIB_NEEDLINK) {
2689                         if(cu->adt) lib_link_animdata(fd, &cu->id, cu->adt);
2690
2691                         for(a=0; a<cu->totcol; a++) cu->mat[a]= newlibadr_us(fd, cu->id.lib, cu->mat[a]);
2692
2693                         cu->bevobj= newlibadr(fd, cu->id.lib, cu->bevobj);
2694                         cu->taperobj= newlibadr(fd, cu->id.lib, cu->taperobj);
2695                         cu->textoncurve= newlibadr(fd, cu->id.lib, cu->textoncurve);
2696                         cu->vfont= newlibadr_us(fd, cu->id.lib, cu->vfont);
2697                         cu->vfontb= newlibadr_us(fd, cu->id.lib, cu->vfontb);                   
2698                         cu->vfonti= newlibadr_us(fd, cu->id.lib, cu->vfonti);
2699                         cu->vfontbi= newlibadr_us(fd, cu->id.lib, cu->vfontbi);
2700
2701                         cu->ipo= newlibadr_us(fd, cu->id.lib, cu->ipo); // XXX depreceated - old animation system
2702                         cu->key= newlibadr_us(fd, cu->id.lib, cu->key);
2703
2704                         cu->id.flag -= LIB_NEEDLINK;
2705                 }
2706                 cu= cu->id.next;
2707         }
2708 }
2709
2710
2711 static void switch_endian_knots(Nurb *nu)
2712 {
2713         int len;
2714
2715         if(nu->knotsu) {
2716                 len= KNOTSU(nu);
2717                 while(len--) {
2718                         SWITCH_INT(nu->knotsu[len]);
2719                 }
2720         }
2721         if(nu->knotsv) {
2722                 len= KNOTSV(nu);
2723                 while(len--) {
2724                         SWITCH_INT(nu->knotsv[len]);
2725                 }
2726         }
2727 }
2728
2729 static void direct_link_curve(FileData *fd, Curve *cu)
2730 {
2731         Nurb *nu;
2732         TextBox *tb;
2733         
2734         cu->adt= newdataadr(fd, cu->adt);
2735         direct_link_animdata(fd, cu->adt);
2736         
2737         cu->mat= newdataadr(fd, cu->mat);
2738         test_pointer_array(fd, (void **)&cu->mat);
2739         cu->str= newdataadr(fd, cu->str);
2740         cu->strinfo= newdataadr(fd, cu->strinfo);       
2741         cu->tb= newdataadr(fd, cu->tb);
2742
2743         if(cu->vfont==0) link_list(fd, &(cu->nurb));
2744         else {
2745                 cu->nurb.first=cu->nurb.last= 0;
2746
2747                 tb= MEM_callocN(MAXTEXTBOX*sizeof(TextBox), "TextBoxread");
2748                 if (cu->tb) {
2749                         memcpy(tb, cu->tb, cu->totbox*sizeof(TextBox));
2750                         MEM_freeN(cu->tb);
2751                         cu->tb= tb;                     
2752                 } else {
2753                         cu->totbox = 1;
2754                         cu->actbox = 1;
2755                         cu->tb = tb;
2756                         cu->tb[0].w = cu->linewidth;
2757                 }               
2758                 if (cu->wordspace == 0.0) cu->wordspace = 1.0;
2759         }
2760
2761         cu->bev.first=cu->bev.last= NULL;
2762         cu->disp.first=cu->disp.last= NULL;
2763         cu->editnurb= NULL;
2764         cu->lastsel= NULL;
2765         cu->path= NULL;
2766         cu->editfont= NULL;
2767         
2768         nu= cu->nurb.first;
2769         while(nu) {
2770                 nu->bezt= newdataadr(fd, nu->bezt);
2771                 nu->bp= newdataadr(fd, nu->bp);
2772                 nu->knotsu= newdataadr(fd, nu->knotsu);
2773                 nu->knotsv= newdataadr(fd, nu->knotsv);
2774                 if (cu->vfont==0) nu->charidx= nu->mat_nr;
2775
2776                 if(fd->flags & FD_FLAGS_SWITCH_ENDIAN) {
2777                         switch_endian_knots(nu);
2778                 }
2779
2780                 nu= nu->next;
2781         }
2782         cu->bb= NULL;
2783 }
2784
2785 /* ************ READ TEX ***************** */
2786
2787 static void lib_link_texture(FileData *fd, Main *main)
2788 {
2789         Tex *tex;
2790
2791         tex= main->tex.first;
2792         while(tex) {
2793                 if(tex->id.flag & LIB_NEEDLINK) {
2794                         if(tex->adt) lib_link_animdata(fd, &tex->id, tex->adt);
2795
2796                         tex->ima= newlibadr_us(fd, tex->id.lib, tex->ima);
2797                         tex->ipo= newlibadr_us(fd, tex->id.lib, tex->ipo);
2798                         if(tex->env) tex->env->object= newlibadr(fd, tex->id.lib, tex->env->object);
2799                         if(tex->pd)
2800                                 tex->pd->object= newlibadr(fd, tex->id.lib, tex->pd->object);
2801                         if(tex->vd) tex->vd->object= newlibadr(fd, tex->id.lib, tex->vd->object);
2802
2803                         if(tex->nodetree)
2804                                 lib_link_ntree(fd, &tex->id, tex->nodetree);
2805                         
2806                         tex->id.flag -= LIB_NEEDLINK;
2807                 }
2808                 tex= tex->id.next;
2809         }
2810 }
2811
2812 static void direct_link_texture(FileData *fd, Tex *tex)
2813 {
2814         tex->adt= newdataadr(fd, tex->adt);
2815         direct_link_animdata(fd, tex->adt);
2816         
2817         tex->plugin= newdataadr(fd, tex->plugin);
2818         if(tex->plugin) {
2819                 tex->plugin->handle= 0;
2820                 open_plugin_tex(tex->plugin);
2821                 /* initialize data for this instance, if an initialization
2822                  * function exists.
2823                  */
2824                 if (tex->plugin->instance_init)
2825                         tex->plugin->instance_init((void *) tex->plugin->data);
2826         }
2827         tex->coba= newdataadr(fd, tex->coba);
2828         tex->env= newdataadr(fd, tex->env);
2829         if(tex->env) {
2830                 tex->env->ima= NULL;
2831                 memset(tex->env->cube, 0, 6*sizeof(void *));
2832                 tex->env->ok= 0;
2833         }
2834         tex->pd= newdataadr(fd, tex->pd);
2835         if(tex->pd) {
2836                 tex->pd->point_tree = NULL;
2837                 tex->pd->coba= newdataadr(fd, tex->pd->coba);
2838         }
2839         
2840         tex->vd= newdataadr(fd, tex->vd);
2841         if(tex->vd) {
2842                 tex->vd->dataset = NULL;
2843                 tex->vd->ok = 0;
2844         }
2845         
2846         tex->nodetree= newdataadr(fd, tex->nodetree);
2847         if(tex->nodetree)
2848                 direct_link_nodetree(fd, tex->nodetree);
2849         
2850         tex->preview = direct_link_preview_image(fd, tex->preview);
2851
2852         tex->iuser.ok= 1;
2853 }
2854
2855
2856
2857 /* ************ READ MATERIAL ***************** */
2858
2859 static void lib_link_material(FileData *fd, Main *main)
2860 {
2861         Material *ma;
2862         MTex *mtex;
2863         int a;
2864
2865         ma= main->mat.first;
2866         while(ma) {
2867                 if(ma->id.flag & LIB_NEEDLINK) {
2868                         if(ma->adt) lib_link_animdata(fd, &ma->id, ma->adt);
2869
2870                         /*Link ID Properties -- and copy this comment EXACTLY for easy finding
2871                         of library blocks that implement this.*/
2872                         if (ma->id.properties) IDP_LibLinkProperty(ma->id.properties, (fd->flags & FD_FLAGS_SWITCH_ENDIAN), fd);
2873
2874                         ma->ipo= newlibadr_us(fd, ma->id.lib, ma->ipo);
2875                         ma->group= newlibadr_us(fd, ma->id.lib, ma->group);
2876                         
2877                         for(a=0; a<MAX_MTEX; a++) {
2878                                 mtex= ma->mtex[a];
2879                                 if(mtex) {
2880                                         mtex->tex= newlibadr_us(fd, ma->id.lib, mtex->tex);
2881                                         mtex->object= newlibadr(fd, ma->id.lib, mtex->object);
2882                                 }
2883                         }
2884                         
2885                         if(ma->nodetree)
2886                                 lib_link_ntree(fd, &ma->id, ma->nodetree);
2887                         
2888                         ma->id.flag -= LIB_NEEDLINK;
2889                 }
2890                 ma= ma->id.next;
2891         }
2892 }
2893
2894 static void direct_link_material(FileData *fd, Material *ma)
2895 {
2896         int a;
2897
2898         ma->adt= newdataadr(fd, ma->adt);
2899         direct_link_animdata(fd, ma->adt);
2900         
2901         for(a=0; a<MAX_MTEX; a++) {
2902                 ma->mtex[a]= newdataadr(fd, ma->mtex[a]);
2903         }
2904
2905         ma->ramp_col= newdataadr(fd, ma->ramp_col);
2906         ma->ramp_spec= newdataadr(fd, ma->ramp_spec);
2907         
2908         ma->nodetree= newdataadr(fd, ma->nodetree);
2909         if(ma->nodetree)
2910                 direct_link_nodetree(fd, ma->nodetree);
2911
2912         ma->preview = direct_link_preview_image(fd, ma->preview);
2913         ma->gpumaterial.first = ma->gpumaterial.last = NULL;
2914 }
2915
2916 /* ************ READ PARTICLE SETTINGS ***************** */
2917
2918 static void direct_link_pointcache(FileData *fd, PointCache *cache)
2919 {
2920         if((cache->flag & PTCACHE_DISK_CACHE)==0) {
2921                 PTCacheMem *pm;
2922                 int i;
2923
2924                 link_list(fd, &cache->mem_cache);
2925
2926                 pm = cache->mem_cache.first;
2927
2928                 for(; pm; pm=pm->next) {
2929                         if(pm->index_array)
2930                                 pm->index_array = newdataadr(fd, pm->index_array);
2931                         
2932                         for(i=0; i<BPHYS_TOT_DATA; i++) {
2933                                 if(pm->data[i] && pm->data_types & (1<<i))
2934                                         pm->data[i] = newdataadr(fd, pm->data[i]);
2935                         }
2936                 }
2937         }
2938         else
2939                 cache->mem_cache.first = cache->mem_cache.last = NULL;
2940
2941         cache->flag &= ~PTCACHE_SIMULATION_VALID;
2942         cache->simframe= 0;
2943         cache->edit= NULL;
2944         cache->free_edit= NULL;
2945 }
2946
2947 static void direct_link_pointcache_list(FileData *fd, ListBase *ptcaches, PointCache **ocache)
2948 {
2949         PointCache *cache;
2950
2951         if(ptcaches->first) {
2952                 link_list(fd, ptcaches);
2953                 for(cache=ptcaches->first; cache; cache=cache->next)
2954                         direct_link_pointcache(fd, cache);
2955
2956                 *ocache = newdataadr(fd, *ocache);
2957         }
2958         else if(*ocache) {
2959                 /* old "single" caches need to be linked too */
2960                 *ocache = newdataadr(fd, *ocache);
2961                 direct_link_pointcache(fd, *ocache);
2962
2963                 ptcaches->first = ptcaches->last = *ocache;
2964         }
2965 }
2966
2967 void lib_link_partdeflect(FileData *fd, ID *id, PartDeflect *pd)
2968 {
2969         if(pd && pd->tex)
2970                 pd->tex=newlibadr_us(fd, id->lib, pd->tex);
2971 }
2972
2973 static void lib_link_particlesettings(FileData *fd, Main *main)
2974 {
2975         ParticleSettings *part;
2976         ParticleDupliWeight *dw;
2977
2978         part= main->particle.first;
2979         while(part) {
2980                 if(part->id.flag & LIB_NEEDLINK) {
2981                         if (part->adt) lib_link_animdata(fd, &part->id, part->adt);
2982                         part->ipo= newlibadr_us(fd, part->id.lib, part->ipo); // XXX depreceated - old animation system
2983                         
2984                         part->dup_ob = newlibadr(fd, part->id.lib, part->dup_ob);
2985                         part->dup_group = newlibadr(fd, part->id.lib, part->dup_group);
2986                         part->eff_group = newlibadr(fd, part->id.lib, part->eff_group);
2987                         part->bb_ob = newlibadr(fd, part->id.lib, part->bb_ob);
2988
2989                         lib_link_partdeflect(fd, &part->id, part->pd);
2990                         lib_link_partdeflect(fd, &part->id, part->pd2);
2991
2992                         if(part->effector_weights)
2993                                 part->effector_weights->group = newlibadr(fd, part->id.lib, part->effector_weights->group);
2994
2995                         dw = part->dupliweights.first;
2996                         for(; dw; dw=dw->next)
2997                                 dw->ob = newlibadr(fd, part->id.lib, dw->ob);
2998
2999                         if(part->boids) {
3000                                 BoidState *state = part->boids->states.first;
3001                                 BoidRule *rule;
3002                                 for(; state; state=state->next) {
3003                                         rule = state->rules.first;
3004                                 for(; rule; rule=rule->next)
3005                                         switch(rule->type) {
3006                                                 case eBoidRuleType_Goal:
3007                                                 case eBoidRuleType_Avoid:
3008                                                 {
3009                                                         BoidRuleGoalAvoid *brga = (BoidRuleGoalAvoid*)rule;
3010                                                         brga->ob = newlibadr(fd, part->id.lib, brga->ob);
3011                                                         break;
3012                                                 }
3013                                                 case eBoidRuleType_FollowLeader:
3014                                                 {
3015                                                         BoidRuleFollowLeader *brfl = (BoidRuleFollowLeader*)rule;
3016                                                         brfl->ob = newlibadr(fd, part->id.lib, brfl->ob);
3017                                                         break;
3018                                                 }
3019                                         }
3020                                 }
3021                         }
3022                         part->id.flag -= LIB_NEEDLINK;
3023                 }
3024                 part= part->id.next;
3025         }
3026 }
3027
3028 static void direct_link_partdeflect(PartDeflect *pd)
3029 {
3030         if(pd) pd->rng=NULL;
3031 }
3032
3033 static void direct_link_particlesettings(FileData *fd, ParticleSettings *part)
3034 {
3035         part->adt= newdataadr(fd, part->adt);
3036         part->pd= newdataadr(fd, part->pd);
3037         part->pd2= newdataadr(fd, part->pd2);
3038
3039         direct_link_animdata(fd, part->adt);
3040         direct_link_partdeflect(part->pd);
3041         direct_link_partdeflect(part->pd2);
3042
3043         part->effector_weights = newdataadr(fd, part->effector_weights);
3044         if(!part->effector_weights)
3045                 part->effector_weights = BKE_add_effector_weights(part->eff_group);
3046
3047         link_list(fd, &part->dupliweights);
3048
3049         part->boids= newdataadr(fd, part->boids);
3050         part->fluid= newdataadr(fd, part->fluid);
3051
3052         if(part->boids) {
3053                 BoidState *state;
3054                 link_list(fd, &part->boids->states);
3055                 
3056                 for(state=part->boids->states.first; state; state=state->next) {
3057                         link_list(fd, &state->rules);
3058                         link_list(fd, &state->conditions);
3059                         link_list(fd, &state->actions);
3060                 }
3061         }
3062 }
3063
3064 static void lib_link_particlesystems(FileData *fd, Object *ob, ID *id, ListBase *particles)
3065 {
3066         ParticleSystem *psys, *psysnext;
3067
3068         for(psys=particles->first; psys; psys=psysnext){
3069                 psysnext= psys->next;
3070                 
3071                 psys->part = newlibadr_us(fd, id->lib, psys->part);
3072                 if(psys->part) {
3073                         ParticleTarget *pt = psys->targets.first;
3074
3075                         for(; pt; pt=pt->next)
3076                                 pt->ob=newlibadr(fd, id->lib, pt->ob);
3077
3078                         psys->parent= newlibadr_us(fd, id->lib, psys->parent);
3079                         psys->target_ob = newlibadr(fd, id->lib, psys->target_ob);
3080
3081                         if(psys->clmd) {
3082                                 /* XXX - from reading existing code this seems correct but intended usage of
3083                                  * pointcache should /w cloth should be added in 'ParticleSystem' - campbell */
3084                                 psys->clmd->point_cache= psys->pointcache;
3085                                 psys->clmd->ptcaches.first= psys->clmd->ptcaches.last= NULL;
3086                                 psys->clmd->coll_parms->group= newlibadr(fd, id->lib, psys->clmd->coll_parms->group);
3087                         }
3088                 }
3089                 else {
3090                         /* particle modifier must be removed before particle system */
3091                         ParticleSystemModifierData *psmd= psys_get_modifier(ob,psys);
3092                         BLI_remlink(&ob->modifiers, psmd);
3093                         modifier_free((ModifierData *)psmd);
3094
3095                         BLI_remlink(particles, psys);
3096                         MEM_freeN(psys);
3097                 }
3098         }
3099 }
3100 static void direct_link_particlesystems(FileData *fd, ListBase *particles)
3101 {
3102         ParticleSystem *psys;
3103         ParticleData *pa;
3104         int a;
3105
3106         for(psys=particles->first; psys; psys=psys->next) {
3107                 psys->particles=newdataadr(fd,psys->particles);
3108                 
3109                 if(psys->particles && psys->particles->hair){
3110                         for(a=0,pa=psys->particles; a<psys->totpart; a++, pa++)
3111                                 pa->hair=newdataadr(fd,pa->hair);
3112                 }
3113                 
3114                 if(psys->particles && psys->particles->keys){
3115                         for(a=0,pa=psys->particles; a<psys->totpart; a++, pa++) {
3116                                 pa->keys= NULL;
3117                                 pa->totkey= 0;
3118                         }
3119
3120                         psys->flag &= ~PSYS_KEYED;
3121                 }
3122
3123                 if(psys->particles && psys->particles->boid) {
3124                         pa = psys->particles;
3125                         pa->boid = newdataadr(fd, pa->boid);
3126                         for(a=1,pa++; a<psys->totpart; a++, pa++)
3127                                 pa->boid = (pa-1)->boid + 1;
3128                 }
3129                 else {
3130                         for(a=0,pa=psys->particles; a<psys->totpart; a++, pa++)
3131                                 pa->boid = NULL;
3132                 }
3133
3134
3135                 psys->child = newdataadr(fd,psys->child);
3136                 psys->effectors = NULL;
3137
3138                 link_list(fd, &psys->targets);
3139
3140                 psys->edit = NULL;
3141                 psys->free_edit = NULL;
3142                 psys->pathcache = NULL;
3143                 psys->childcache = NULL;
3144                 psys->pathcachebufs.first = psys->pathcachebufs.last = NULL;
3145                 psys->childcachebufs.first = psys->childcachebufs.last = NULL;
3146                 psys->frand = NULL;
3147                 psys->pdd = NULL;
3148                 
3149                 direct_link_pointcache_list(fd, &psys->ptcaches, &psys->pointcache);
3150
3151                 if(psys->clmd) {
3152                         psys->clmd = newdataadr(fd, psys->clmd);
3153                         psys->clmd->clothObject = NULL;
3154                         
3155                         psys->clmd->sim_parms= newdataadr(fd, psys->clmd->sim_parms);
3156                         psys->clmd->coll_parms= newdataadr(fd, psys->clmd->coll_parms);
3157                         
3158                         if(psys->clmd->sim_parms) {
3159                                 if(psys->clmd->sim_parms->presets > 10)
3160                                         psys->clmd->sim_parms->presets = 0;
3161                         }
3162
3163                         psys->hair_in_dm = psys->hair_out_dm = NULL;
3164
3165                         psys->clmd->point_cache = psys->pointcache;
3166                 }
3167
3168                 psys->tree = NULL;
3169         }
3170         return;
3171 }
3172
3173 /* ************ READ MESH ***************** */
3174
3175 static void lib_link_mtface(FileData *fd, Mesh *me, MTFace *mtface, int totface)
3176 {
3177         MTFace *tf= mtface;
3178         int i;
3179
3180         for (i=0; i<totface; i++, tf++) {
3181                 tf->tpage= newlibadr(fd, me->id.lib, tf->tpage);
3182                 if(tf->tpage && tf->tpage->id.us==0)
3183                         tf->tpage->id.us= 1;
3184         }
3185 }
3186
3187 static void lib_link_customdata_mtface(FileData *fd, Mesh *me, CustomData *fdata, int totface)
3188 {
3189         int i;  
3190         for(i=0; i<fdata->totlayer; i++) {
3191                 CustomDataLayer *layer = &fdata->layers[i];
3192                 
3193                 if(layer->type == CD_MTFACE)
3194                         lib_link_mtface(fd, me, layer->data, totface);
3195         }
3196
3197 }
3198
3199 static void lib_link_mesh(FileData *fd, Main *main)
3200 {
3201         Mesh *me;
3202
3203         me= main->mesh.first;
3204         while(me) {
3205                 if(me->id.flag & LIB_NEEDLINK) {
3206                         int i;
3207
3208                         /*Link ID Properties -- and copy this comment EXACTLY for easy finding
3209                         of library blocks that implement this.*/
3210                         if (me->id.properties) IDP_LibLinkProperty(me->id.properties, (fd->flags & FD_FLAGS_SWITCH_ENDIAN), fd);
3211                         if (me->adt) lib_link_animdata(fd, &me->id, me->adt);
3212
3213                         /* this check added for python created meshes */
3214                         if(me->mat) {
3215                                 for(i=0; i<me->totcol; i++) {
3216                                         me->mat[i]= newlibadr_us(fd, me->id.lib, me->mat[i]);
3217                                 }
3218                         }
3219                         else me->totcol= 0;
3220
3221                         me->ipo= newlibadr_us(fd, me->id.lib, me->ipo);
3222                         me->key= newlibadr_us(fd, me->id.lib, me->key);
3223                         me->texcomesh= newlibadr_us(fd, me->id.lib, me->texcomesh);
3224
3225                         lib_link_customdata_mtface(fd, me, &me->fdata, me->totface);
3226                         if(me->mr && me->mr->levels.first)
3227                                 lib_link_customdata_mtface(fd, me, &me->mr->fdata,
3228                                                            ((MultiresLevel*)me->mr->levels.first)->totface);
3229
3230                         me->id.flag -= LIB_NEEDLINK;
3231                 }
3232                 me= me->id.next;
3233         }
3234 }
3235
3236 static void direct_link_dverts(FileData *fd, int count, MDeformVert *mdverts)
3237 {
3238         int     i;
3239
3240         if (!mdverts)
3241                 return;
3242
3243         for (i=0; i<count; i++) {
3244                 mdverts[i].dw=newdataadr(fd, mdverts[i].dw);
3245                 if (!mdverts[i].dw)
3246                         mdverts[i].totweight=0;
3247         }
3248 }
3249
3250 static void direct_link_mdisps(FileData *fd, int count, MDisps *mdisps, int external)
3251 {
3252         if(mdisps) {
3253                 int i;
3254
3255                 for(i = 0; i < count; ++i) {
3256                         mdisps[i].disps = newdataadr(fd, mdisps[i].disps);
3257                         if(!external && !mdisps[i].disps)
3258                                 mdisps[i].totdisp = 0;
3259                 }
3260         }       
3261 }
3262
3263 static void direct_link_customdata(FileData *fd, CustomData *data, int count)
3264 {
3265         int i = 0;
3266
3267         data->layers= newdataadr(fd, data->layers);
3268         data->external= newdataadr(fd, data->external);
3269
3270         while (i < data->totlayer) {
3271                 CustomDataLayer *layer = &data->layers[i];
3272
3273                 if(layer->flag & CD_FLAG_EXTERNAL)
3274                         layer->flag &= ~CD_FLAG_IN_MEMORY;
3275
3276                 if (CustomData_verify_versions(data, i)) {
3277                         layer->data = newdataadr(fd, layer->data);
3278                         if(layer->type == CD_MDISPS)
3279                                 direct_link_mdisps(fd, count, layer->data, layer->flag & CD_FLAG_EXTERNAL);
3280                         i++;
3281                 }
3282         }
3283 }
3284
3285 static void direct_link_mesh(FileData *fd, Mesh *mesh)
3286 {
3287         mesh->mat= newdataadr(fd, mesh->mat);
3288         test_pointer_array(fd, (void **)&mesh->mat);
3289
3290         mesh->mvert= newdataadr(fd, mesh->mvert);
3291         mesh->medge= newdataadr(fd, mesh->medge);
3292         mesh->mface= newdataadr(fd, mesh->mface);
3293         mesh->tface= newdataadr(fd, mesh->tface);
3294  &nb