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 /** \file blender/blenloader/intern/readfile.c
  31  *  \ingroup blenloader
  32  */
  33
  34
  35 #include "zlib.h"
  36
  37 #include <limits.h>
  38 #include <stdio.h> // for printf fopen fwrite fclose sprintf FILE
  39 #include <stdlib.h> // for getenv atoi
  40 #include <stddef.h> // for offsetof
  41 #include <fcntl.h> // for open
  42 #include <string.h> // for strrchr strncmp strstr
  43 #include <math.h> // for fabs
  44
  45 #ifndef WIN32
  46         #include <unistd.h> // for read close
  47 #else
  48         #include <io.h> // for open close read
  49 #include "winsock2.h"
  50 #include "BLI_winstuff.h"
  51 #endif
  52
  53 #include "DNA_anim_types.h"
  54 #include "DNA_armature_types.h"
  55 #include "DNA_actuator_types.h"
  56 #include "DNA_brush_types.h"
  57 #include "DNA_camera_types.h"
  58 #include "DNA_cloth_types.h"
  59 #include "DNA_controller_types.h"
  60 #include "DNA_constraint_types.h"
  61 #include "DNA_effect_types.h"
  62 #include "DNA_fileglobal_types.h"
  63 #include "DNA_genfile.h"
  64 #include "DNA_group_types.h"
  65 #include "DNA_gpencil_types.h"
  66 #include "DNA_ipo_types.h"
  67 #include "DNA_key_types.h"
  68 #include "DNA_lattice_types.h"
  69 #include "DNA_lamp_types.h"
  70 #include "DNA_meta_types.h"
  71 #include "DNA_material_types.h"
  72 #include "DNA_mesh_types.h"
  73 #include "DNA_meshdata_types.h"
  74 #include "DNA_nla_types.h"
  75 #include "DNA_node_types.h"
  76 #include "DNA_object_fluidsim.h" // NT
  77 #include "DNA_packedFile_types.h"
  78 #include "DNA_particle_types.h"
  79 #include "DNA_property_types.h"
  80 #include "DNA_text_types.h"
  81 #include "DNA_view3d_types.h"
  82 #include "DNA_screen_types.h"
  83 #include "DNA_sensor_types.h"
  84 #include "DNA_sdna_types.h"
  85 #include "DNA_scene_types.h"
  86 #include "DNA_sequence_types.h"
  87 #include "DNA_smoke_types.h"
  88 #include "DNA_sound_types.h"
  89 #include "DNA_space_types.h"
  90 #include "DNA_vfont_types.h"
  91 #include "DNA_world_types.h"
  92
  93 #include "MEM_guardedalloc.h"
  94
  95 #include "BLI_utildefines.h"
  96 #include "BLI_blenlib.h"
  97 #include "BLI_math.h"
  98 #include "BLI_cellalloc.h"
  99 #include "BLI_edgehash.h"
 100
 101 #include "BKE_anim.h"
 102 #include "BKE_action.h"
 103 #include "BKE_armature.h"
 104 #include "BKE_brush.h"
 105 #include "BKE_colortools.h"
 106 #include "BKE_constraint.h"
 107 #include "BKE_context.h"
 108 #include "BKE_curve.h"
 109 #include "BKE_deform.h"
 110 #include "BKE_effect.h" /* give_parteff */
 111 #include "BKE_fcurve.h"
 112 #include "BKE_global.h" // for G
 113 #include "BKE_group.h"
 114 #include "BKE_image.h"
 115 #include "BKE_lattice.h"
 116 #include "BKE_library.h" // for which_libbase
 117 #include "BKE_idcode.h"
 118 #include "BKE_material.h"
 119 #include "BKE_main.h" // for Main
 120 #include "BKE_mesh.h" // for ME_ defines (patching)
 121 #include "BKE_modifier.h"
 122 #include "BKE_multires.h"
 123 #include "BKE_node.h" // for tree type defines
 124 #include "BKE_object.h"
 125 #include "BKE_paint.h"
 126 #include "BKE_particle.h"
 127 #include "BKE_pointcache.h"
 128 #include "BKE_property.h" // for get_ob_property
 129 #include "BKE_report.h"
 130 #include "BKE_sca.h" // for init_actuator
 131 #include "BKE_scene.h"
 132 #include "BKE_screen.h"
 133 #include "BKE_sequencer.h"
 134 #include "BKE_texture.h" // for open_plugin_tex
 135 #include "BKE_utildefines.h" // SWITCH_INT DATA ENDB DNA1 O_BINARY GLOB USER TEST REND
 136 #include "BKE_sound.h"
 137
 138 //XXX #include "BIF_butspace.h" // badlevel, for do_versions, patching event codes
 139 //XXX #include "BIF_filelist.h" // badlevel too, where to move this? - elubie
 140 //XXX #include "BIF_previewrender.h" // bedlelvel, for struct RenderInfo
 141 #include "BLO_readfile.h"
 142 #include "BLO_undofile.h"
 143
 144 #include "readfile.h"
 145
 146 #include "PIL_time.h"
 147
 148 #include <errno.h>
 149
 150 /*
 151  Remark: still a weak point is the newaddress() function, that doesnt solve reading from
 152  multiple files at the same time
 153
 154  (added remark: oh, i thought that was solved? will look at that... (ton)
 155
 156 READ
 157 - Existing Library (Main) push or free
 158 - allocate new Main
 159 - load file
 160 - read SDNA
 161 - for each LibBlock
 162         - read LibBlock
 163         - if a Library
 164                 - make a new Main
 165                 - attach ID's to it
 166         - else
 167                 - read associated 'direct data'
 168                 - link direct data (internal and to LibBlock)
 169 - read FileGlobal
 170 - read USER data, only when indicated (file is ~/X.XX/startup.blend)
 171 - free file
 172 - per Library (per Main)
 173         - read file
 174         - read SDNA
 175         - find LibBlocks and attach IDs to Main
 176                 - if external LibBlock
 177                         - search all Main's
 178                                 - or it's already read,
 179                                 - or not read yet
 180                                 - or make new Main
 181         - per LibBlock
 182                 - read recursive
 183                 - read associated direct data
 184                 - link direct data (internal and to LibBlock)
 185         - free file
 186 - per Library with unread LibBlocks
 187         - read file
 188         - read SDNA
 189         - per LibBlock
 190                            - read recursive
 191                            - read associated direct data
 192                            - link direct data (internal and to LibBlock)
 193                 - free file
 194 - join all Mains
 195 - link all LibBlocks and indirect pointers to libblocks
 196 - initialize FileGlobal and copy pointers to Global
 197 */
 198
 199 /* also occurs in library.c */
 200 /* GS reads the memory pointed at in a specific ordering. There are,
 201  * however two definitions for it. I have jotted them down here, both,
 202  * but I think the first one is actually used. The thing is that
 203  * big-endian systems might read this the wrong way round. OTOH, we
 204  * constructed the IDs that are read out with this macro explicitly as
 205  * well. I expect we'll sort it out soon... */
 206
 207 /* from blendef: */
 208 #define GS(a)   (*((short *)(a)))
 209
 210 /* from misc_util: flip the bytes from x  */
 211 /*  #define GS(x) (((unsigned char *)(x))[0] << 8 | ((unsigned char *)(x))[1]) */
 212
 213 // only used here in readfile.c
 214 #define SWITCH_LONGINT(a) { \
 215         char s_i, *p_i; \
 216         p_i= (char *)&(a);  \
 217         s_i=p_i[0]; p_i[0]=p_i[7]; p_i[7]=s_i; \
 218         s_i=p_i[1]; p_i[1]=p_i[6]; p_i[6]=s_i; \
 219         s_i=p_i[2]; p_i[2]=p_i[5]; p_i[5]=s_i; \
 220         s_i=p_i[3]; p_i[3]=p_i[4]; p_i[4]=s_i; }
 221
 222 /***/
 223
 224 typedef struct OldNew {
 225         void *old, *newp;
 226         int nr;
 227 } OldNew;
 228
 229 typedef struct OldNewMap {
 230         OldNew *entries;
 231         int nentries, entriessize;
 232         int sorted;
 233         int lasthit;
 234 } OldNewMap;
 235
 236
 237 /* local prototypes */
 238 static void *read_struct(FileData *fd, BHead *bh, const char *blockname);
 239 static void direct_link_modifiers(FileData *fd, ListBase *lb);
 240
 241 static OldNewMap *oldnewmap_new(void)
 242 {
 243         OldNewMap *onm= MEM_callocN(sizeof(*onm), "OldNewMap");
 244
 245         onm->entriessize= 1024;
 246         onm->entries= MEM_mallocN(sizeof(*onm->entries)*onm->entriessize, "OldNewMap.entries");
 247
 248         return onm;
 249 }
 250
 251 static int verg_oldnewmap(const void *v1, const void *v2)
 252 {
 253         const struct OldNew *x1=v1, *x2=v2;
 254
 255         if( x1->old > x2->old) return 1;
 256         else if( x1->old < x2->old) return -1;
 257         return 0;
 258 }
 259
 260
 261 static void oldnewmap_sort(FileData *fd)
 262 {
 263         qsort(fd->libmap->entries, fd->libmap->nentries, sizeof(OldNew), verg_oldnewmap);
 264         fd->libmap->sorted= 1;
 265 }
 266
 267 /* nr is zero for data, and ID code for libdata */
 268 static void oldnewmap_insert(OldNewMap *onm, void *oldaddr, void *newaddr, int nr)
 269 {
 270         OldNew *entry;
 271
 272         if(oldaddr==NULL || newaddr==NULL) return;
 273
 274         if (onm->nentries==onm->entriessize) {
 275                 int osize= onm->entriessize;
 276                 OldNew *oentries= onm->entries;
 277
 278                 onm->entriessize*= 2;
 279                 onm->entries= MEM_mallocN(sizeof(*onm->entries)*onm->entriessize, "OldNewMap.entries");
 280
 281                 memcpy(onm->entries, oentries, sizeof(*oentries)*osize);
 282                 MEM_freeN(oentries);
 283         }
 284
 285         entry= &onm->entries[onm->nentries++];
 286         entry->old= oldaddr;
 287         entry->newp= newaddr;
 288         entry->nr= nr;
 289 }
 290
 291 static void *oldnewmap_lookup_and_inc(OldNewMap *onm, void *addr)
 292 {
 293         int i;
 294
 295         if(addr==NULL) return NULL;
 296
 297         if (onm->lasthit<onm->nentries-1) {
 298                 OldNew *entry= &onm->entries[++onm->lasthit];
 299
 300                 if (entry->old==addr) {
 301                         entry->nr++;
 302                         return entry->newp;
 303                 }
 304         }
 305
 306         for (i=0; i<onm->nentries; i++) {
 307                 OldNew *entry= &onm->entries[i];
 308
 309                 if (entry->old==addr) {
 310                         onm->lasthit= i;
 311
 312                         entry->nr++;
 313                         return entry->newp;
 314                 }
 315         }
 316
 317         return NULL;
 318 }
 319
 320 /* for libdata, nr has ID code, no increment */
 321 static void *oldnewmap_liblookup(OldNewMap *onm, void *addr, void *lib)
 322 {
 323         int i;
 324
 325         if(addr==NULL) return NULL;
 326
 327         /* lasthit works fine for non-libdata, linking there is done in same sequence as writing */
 328         if(onm->sorted) {
 329                 OldNew entry_s, *entry;
 330
 331                 entry_s.old= addr;
 332
 333                 entry= bsearch(&entry_s, onm->entries, onm->nentries, sizeof(OldNew), verg_oldnewmap);
 334                 if(entry) {
 335                         ID *id= entry->newp;
 336
 337                         if (id && (!lib || id->lib)) {
 338                                 return entry->newp;
 339                         }
 340                 }
 341         }
 342
 343         for (i=0; i<onm->nentries; i++) {
 344                 OldNew *entry= &onm->entries[i];
 345
 346                 if (entry->old==addr) {
 347                         ID *id= entry->newp;
 348
 349                         if (id && (!lib || id->lib)) {
 350                                 return entry->newp;
 351                         }
 352                 }
 353         }
 354
 355         return NULL;
 356 }
 357
 358 static void oldnewmap_free_unused(OldNewMap *onm)
 359 {
 360         int i;
 361
 362         for (i=0; i<onm->nentries; i++) {
 363                 OldNew *entry= &onm->entries[i];
 364                 if (entry->nr==0) {
 365                         MEM_freeN(entry->newp);
 366                         entry->newp= NULL;
 367                 }
 368         }
 369 }
 370
 371 static void oldnewmap_clear(OldNewMap *onm)
 372 {
 373         onm->nentries= 0;
 374         onm->lasthit= 0;
 375 }
 376
 377 static void oldnewmap_free(OldNewMap *onm)
 378 {
 379         MEM_freeN(onm->entries);
 380         MEM_freeN(onm);
 381 }
 382
 383 /***/
 384
 385 static void read_libraries(FileData *basefd, ListBase *mainlist);
 386
 387 /* ************ help functions ***************** */
 388
 389 static void add_main_to_main(Main *mainvar, Main *from)
 390 {
 391         ListBase *lbarray[MAX_LIBARRAY], *fromarray[MAX_LIBARRAY];
 392         int a;
 393
 394         set_listbasepointers(mainvar, lbarray);
 395         a= set_listbasepointers(from, fromarray);
 396         while(a--) {
 397                 BLI_movelisttolist(lbarray[a], fromarray[a]);
 398         }
 399 }
 400
 401 void blo_join_main(ListBase *mainlist)
 402 {
 403         Main *tojoin, *mainl;
 404
 405
 406         mainl= mainlist->first;
 407         while ((tojoin= mainl->next)) {
 408                 add_main_to_main(mainl, tojoin);
 409                 BLI_remlink(mainlist, tojoin);
 410                 MEM_freeN(tojoin);
 411         }
 412 }
 413
 414 static void split_libdata(ListBase *lb, Main *first)
 415 {
 416         ListBase *lbn;
 417         ID *id, *idnext;
 418         Main *mainvar;
 419
 420         id= lb->first;
 421         while(id) {
 422                 idnext= id->next;
 423                 if(id->lib) {
 424                         mainvar= first;
 425                         while(mainvar) {
 426                                 if(mainvar->curlib==id->lib) {
 427                                         lbn= which_libbase(mainvar, GS(id->name));
 428                                         BLI_remlink(lb, id);
 429                                         BLI_addtail(lbn, id);
 430                                         break;
 431                                 }
 432                                 mainvar= mainvar->next;
 433                         }
 434                         if(mainvar==NULL) printf("error split_libdata\n");
 435                 }
 436                 id= idnext;
 437         }
 438 }
 439
 440 void blo_split_main(ListBase *mainlist, Main *main)
 441 {
 442         ListBase *lbarray[MAX_LIBARRAY];
 443         Library *lib;
 444         int i;
 445
 446         mainlist->first= mainlist->last= main;
 447         main->next= NULL;
 448
 449         if(main->library.first==NULL)
 450                 return;
 451
 452         for (lib= main->library.first; lib; lib= lib->id.next) {
 453                 Main *libmain= MEM_callocN(sizeof(Main), "libmain");
 454                 libmain->curlib= lib;
 455                 BLI_addtail(mainlist, libmain);
 456         }
 457
 458         i= set_listbasepointers(main, lbarray);
 459         while(i--)
 460                 split_libdata(lbarray[i], main->next);
 461 }
 462
 463 /* removes things like /blah/blah/../../blah/ etc, then writes in *name the full path */
 464 static void cleanup_path(const char *relabase, char *name)
 465 {
 466         char filename[FILE_MAXFILE];
 467
 468         BLI_splitdirstring(name, filename);
 469         BLI_cleanup_dir(relabase, name);
 470         strcat(name, filename);
 471 }
 472
 473 static void read_file_version(FileData *fd, Main *main)
 474 {
 475         BHead *bhead;
 476
 477         for (bhead= blo_firstbhead(fd); bhead; bhead= blo_nextbhead(fd, bhead)) {
 478                 if (bhead->code==GLOB) {
 479                         FileGlobal *fg= read_struct(fd, bhead, "Global");
 480                         if(fg) {
 481                                 main->subversionfile= fg->subversion;
 482                                 main->minversionfile= fg->minversion;
 483                                 main->minsubversionfile= fg->minsubversion;
 484                                 MEM_freeN(fg);
 485                         }
 486                         else if (bhead->code==ENDB)
 487                                 break;
 488                 }
 489         }
 490 }
 491
 492
 493 static Main *blo_find_main(FileData *fd, ListBase *mainlist, const char *filepath, const char *relabase)
 494 {
 495         Main *m;
 496         Library *lib;
 497         char name1[FILE_MAXDIR+FILE_MAXFILE];
 498
 499         BLI_strncpy(name1, filepath, sizeof(name1));
 500         cleanup_path(relabase, name1);
 501 //      printf("blo_find_main: original in  %s\n", name);
 502 //      printf("blo_find_main: converted to %s\n", name1);
 503
 504         for (m= mainlist->first; m; m= m->next) {
 505                 char *libname= (m->curlib)?m->curlib->filepath:m->name;
 506
 507                 if (BLI_path_cmp(name1, libname) == 0) {
 508                         if(G.f & G_DEBUG) printf("blo_find_main: found library %s\n", libname);
 509                         return m;
 510                 }
 511         }
 512
 513         m= MEM_callocN(sizeof(Main), "find_main");
 514         BLI_addtail(mainlist, m);
 515
 516         lib= alloc_libblock(&m->library, ID_LI, "lib");
 517         strncpy(lib->name, filepath, sizeof(lib->name)-1);
 518         BLI_strncpy(lib->filepath, name1, sizeof(lib->filepath));
 519
 520         m->curlib= lib;
 521
 522         read_file_version(fd, m);
 523
 524         if(G.f & G_DEBUG) printf("blo_find_main: added new lib %s\n", filepath);
 525         return m;
 526 }
 527
 528
 529 /* ************ FILE PARSING ****************** */
 530
 531 static void switch_endian_bh4(BHead4 *bhead)
 532 {
 533         /* the ID_.. codes */
 534         if((bhead->code & 0xFFFF)==0) bhead->code >>=16;
 535
 536         if (bhead->code != ENDB) {
 537                 SWITCH_INT(bhead->len);
 538                 SWITCH_INT(bhead->SDNAnr);
 539                 SWITCH_INT(bhead->nr);
 540         }
 541 }
 542
 543 static void switch_endian_bh8(BHead8 *bhead)
 544 {
 545         /* the ID_.. codes */
 546         if((bhead->code & 0xFFFF)==0) bhead->code >>=16;
 547
 548         if (bhead->code != ENDB) {
 549                 SWITCH_INT(bhead->len);
 550                 SWITCH_INT(bhead->SDNAnr);
 551                 SWITCH_INT(bhead->nr);
 552         }
 553 }
 554
 555 static void bh4_from_bh8(BHead *bhead, BHead8 *bhead8, int do_endian_swap)
 556 {
 557         BHead4 *bhead4 = (BHead4 *) bhead;
 558 #if defined(WIN32) && !defined(FREE_WINDOWS)
 559         __int64 old;
 560 #else
 561         long long old;
 562 #endif
 563
 564         bhead4->code= bhead8->code;
 565         bhead4->len= bhead8->len;
 566
 567         if (bhead4->code != ENDB) {
 568
 569                 //perform a endian swap on 64bit pointers, otherwise the pointer might map to zero
 570                 //0x0000000000000000000012345678 would become 0x12345678000000000000000000000000
 571                 if (do_endian_swap) {
 572                         SWITCH_LONGINT(bhead8->old);
 573                 }
 574
 575                 /* this patch is to avoid a long long being read from not-eight aligned positions
 576                    is necessary on any modern 64bit architecture) */
 577                 memcpy(&old, &bhead8->old, 8);
 578                 bhead4->old = (int) (old >> 3);
 579
 580                 bhead4->SDNAnr= bhead8->SDNAnr;
 581                 bhead4->nr= bhead8->nr;
 582         }
 583 }
 584
 585 static void bh8_from_bh4(BHead *bhead, BHead4 *bhead4)
 586 {
 587         BHead8 *bhead8 = (BHead8 *) bhead;
 588
 589         bhead8->code= bhead4->code;
 590         bhead8->len= bhead4->len;
 591
 592         if (bhead8->code != ENDB) {
 593                 bhead8->old= bhead4->old;
 594                 bhead8->SDNAnr= bhead4->SDNAnr;
 595                 bhead8->nr= bhead4->nr;
 596         }
 597 }
 598
 599 static BHeadN *get_bhead(FileData *fd)
 600 {
 601         BHeadN *new_bhead = NULL;
 602         int readsize;
 603
 604         if (fd) {
 605                 if ( ! fd->eof) {
 606                         /* initializing to zero isn't strictly needed but shuts valgrind up
 607                          * since uninitialized memory gets compared */
 608                         BHead8 bhead8= {0};
 609                         BHead4 bhead4= {0};
 610                         BHead  bhead= {0};
 611
 612                         // First read the bhead structure.
 613                         // Depending on the platform the file was written on this can
 614                         // be a big or little endian BHead4 or BHead8 structure.
 615
 616                         // As usual 'ENDB' (the last *partial* bhead of the file)
 617                         // needs some special handling. We don't want to EOF just yet.
 618
 619                         if (fd->flags & FD_FLAGS_FILE_POINTSIZE_IS_4) {
 620                                 bhead4.code = DATA;
 621                                 readsize = fd->read(fd, &bhead4, sizeof(bhead4));
 622
 623                                 if (readsize == sizeof(bhead4) || bhead4.code == ENDB) {
 624                                         if (fd->flags & FD_FLAGS_SWITCH_ENDIAN) {
 625                                                 switch_endian_bh4(&bhead4);
 626                                         }
 627
 628                                         if (fd->flags & FD_FLAGS_POINTSIZE_DIFFERS) {
 629                                                 bh8_from_bh4(&bhead, &bhead4);
 630                                         } else {
 631                                                 memcpy(&bhead, &bhead4, sizeof(bhead));
 632                                         }
 633                                 } else {
 634                                         fd->eof = 1;
 635                                         bhead.len= 0;
 636                                 }
 637                         } else {
 638                                 bhead8.code = DATA;
 639                                 readsize = fd->read(fd, &bhead8, sizeof(bhead8));
 640
 641                                 if (readsize == sizeof(bhead8) || bhead8.code == ENDB) {
 642                                         if (fd->flags & FD_FLAGS_SWITCH_ENDIAN) {
 643                                                 switch_endian_bh8(&bhead8);
 644                                         }
 645
 646                                         if (fd->flags & FD_FLAGS_POINTSIZE_DIFFERS) {
 647                                                 bh4_from_bh8(&bhead, &bhead8, (fd->flags & FD_FLAGS_SWITCH_ENDIAN));
 648                                         } else {
 649                                                 memcpy(&bhead, &bhead8, sizeof(bhead));
 650                                         }
 651                                 } else {
 652                                         fd->eof = 1;
 653                                         bhead.len= 0;
 654                                 }
 655                         }
 656
 657                         /* make sure people are not trying to pass bad blend files */
 658                         if (bhead.len < 0) fd->eof = 1;
 659
 660                         // bhead now contains the (converted) bhead structure. Now read
 661                         // the associated data and put everything in a BHeadN (creative naming !)
 662
 663                         if ( ! fd->eof) {
 664                                 new_bhead = MEM_mallocN(sizeof(BHeadN) + bhead.len, "new_bhead");
 665                                 if (new_bhead) {
 666                                         new_bhead->next = new_bhead->prev = NULL;
 667                                         new_bhead->bhead = bhead;
 668
 669                                         readsize = fd->read(fd, new_bhead + 1, bhead.len);
 670
 671                                         if (readsize != bhead.len) {
 672                                                 fd->eof = 1;
 673                                                 MEM_freeN(new_bhead);
 674                                                 new_bhead = NULL;
 675                                         }
 676                                 } else {
 677                                         fd->eof = 1;
 678                                 }
 679                         }
 680                 }
 681         }
 682
 683         // We've read a new block. Now add it to the list
 684         // of blocks.
 685
 686         if (new_bhead) {
 687                 BLI_addtail(&fd->listbase, new_bhead);
 688         }
 689
 690         return(new_bhead);
 691 }
 692
 693 BHead *blo_firstbhead(FileData *fd)
 694 {
 695         BHeadN *new_bhead;
 696         BHead *bhead = NULL;
 697
 698         // Rewind the file
 699         // Read in a new block if necessary
 700
 701         new_bhead = fd->listbase.first;
 702         if (new_bhead == NULL) {
 703                 new_bhead = get_bhead(fd);
 704         }
 705
 706         if (new_bhead) {
 707                 bhead = &new_bhead->bhead;
 708         }
 709
 710         return(bhead);
 711 }
 712
 713 BHead *blo_prevbhead(FileData *UNUSED(fd), BHead *thisblock)
 714 {
 715         BHeadN *bheadn= (BHeadN *) (((char *) thisblock) - GET_INT_FROM_POINTER( &((BHeadN*)0)->bhead) );
 716         BHeadN *prev= bheadn->prev;
 717
 718         return prev?&prev->bhead:NULL;
 719 }
 720
 721 BHead *blo_nextbhead(FileData *fd, BHead *thisblock)
 722 {
 723         BHeadN *new_bhead = NULL;
 724         BHead *bhead = NULL;
 725
 726         if (thisblock) {
 727                 // bhead is actually a sub part of BHeadN
 728                 // We calculate the BHeadN pointer from the BHead pointer below
 729                 new_bhead = (BHeadN *) (((char *) thisblock) - GET_INT_FROM_POINTER( &((BHeadN*)0)->bhead) );
 730
 731                 // get the next BHeadN. If it doesn't exist we read in the next one
 732                 new_bhead = new_bhead->next;
 733                 if (new_bhead == NULL) {
 734                         new_bhead = get_bhead(fd);
 735                 }
 736         }
 737
 738         if (new_bhead) {
 739                 // here we do the reverse:
 740                 // go from the BHeadN pointer to the BHead pointer
 741                 bhead = &new_bhead->bhead;
 742         }
 743
 744         return(bhead);
 745 }
 746
 747 static void decode_blender_header(FileData *fd)
 748 {
 749         char header[SIZEOFBLENDERHEADER], num[4];
 750         int readsize;
 751
 752         // read in the header data
 753         readsize = fd->read(fd, header, sizeof(header));
 754
 755         if (readsize == sizeof(header)) {
 756                 if(strncmp(header, "BLENDER", 7) == 0) {
 757                         int remove_this_endian_test= 1;
 758
 759                         fd->flags |= FD_FLAGS_FILE_OK;
 760
 761                         // what size are pointers in the file ?
 762                         if(header[7]=='_') {
 763                                 fd->flags |= FD_FLAGS_FILE_POINTSIZE_IS_4;
 764                                 if (sizeof(void *) != 4) {
 765                                         fd->flags |= FD_FLAGS_POINTSIZE_DIFFERS;
 766                                 }
 767                         } else {
 768                                 if (sizeof(void *) != 8) {
 769                                         fd->flags |= FD_FLAGS_POINTSIZE_DIFFERS;
 770                                 }
 771                         }
 772
 773                         // is the file saved in a different endian
 774                         // than we need ?
 775                         if (((((char*)&remove_this_endian_test)[0]==1)?L_ENDIAN:B_ENDIAN) != ((header[8]=='v')?L_ENDIAN:B_ENDIAN)) {
 776                                 fd->flags |= FD_FLAGS_SWITCH_ENDIAN;
 777                         }
 778
 779                         // get the version number
 780
 781                         memcpy(num, header+9, 3);
 782                         num[3] = 0;
 783                         fd->fileversion = atoi(num);
 784                 }
 785         }
 786 }
 787
 788 static int read_file_dna(FileData *fd)
 789 {
 790         BHead *bhead;
 791
 792         for (bhead= blo_firstbhead(fd); bhead; bhead= blo_nextbhead(fd, bhead)) {
 793                 if (bhead->code==DNA1) {
 794                         int do_endian_swap= (fd->flags&FD_FLAGS_SWITCH_ENDIAN)?1:0;
 795
 796                         fd->filesdna= DNA_sdna_from_data(&bhead[1], bhead->len, do_endian_swap);
 797                         if (fd->filesdna) {
 798
 799                                 fd->compflags= DNA_struct_get_compareflags(fd->filesdna, fd->memsdna);
 800                                 /* used to retrieve ID names from (bhead+1) */
 801                                 fd->id_name_offs= DNA_elem_offset(fd->filesdna, "ID", "char", "name[]");
 802                         }
 803
 804                         return 1;
 805                 } else if (bhead->code==ENDB)
 806                         break;
 807         }
 808
 809         return 0;
 810 }
 811
 812 static int fd_read_from_file(FileData *filedata, void *buffer, unsigned int size)
 813 {
 814         int readsize = read(filedata->filedes, buffer, size);
 815
 816         if (readsize < 0) {
 817                 readsize = EOF;
 818         } else {
 819                 filedata->seek += readsize;
 820         }
 821
 822         return (readsize);
 823 }
 824
 825 static int fd_read_gzip_from_file(FileData *filedata, void *buffer, unsigned int size)
 826 {
 827         int readsize = gzread(filedata->gzfiledes, buffer, size);
 828
 829         if (readsize < 0) {
 830                 readsize = EOF;
 831         } else {
 832                 filedata->seek += readsize;
 833         }
 834
 835         return (readsize);
 836 }
 837
 838 static int fd_read_from_memory(FileData *filedata, void *buffer, unsigned int size)
 839 {
 840         // don't read more bytes then there are available in the buffer
 841         int readsize = (int)MIN2(size, (unsigned int)(filedata->buffersize - filedata->seek));
 842
 843         memcpy(buffer, filedata->buffer + filedata->seek, readsize);
 844         filedata->seek += readsize;
 845
 846         return (readsize);
 847 }
 848
 849 static int fd_read_from_memfile(FileData *filedata, void *buffer, unsigned int size)
 850 {
 851         static unsigned int seek= 1<<30;        /* the current position */
 852         static unsigned int offset= 0;          /* size of previous chunks */
 853         static MemFileChunk *chunk=NULL;
 854         unsigned int chunkoffset, readsize, totread;
 855
 856         if(size==0) return 0;
 857
 858         if(seek != (unsigned int)filedata->seek) {
 859                 chunk= filedata->memfile->chunks.first;
 860                 seek= 0;
 861
 862                 while(chunk) {
 863                         if(seek + chunk->size > (unsigned) filedata->seek) break;
 864                         seek+= chunk->size;
 865                         chunk= chunk->next;
 866                 }
 867                 offset= seek;
 868                 seek= filedata->seek;
 869         }
 870
 871         if(chunk) {
 872                 totread= 0;
 873
 874                 do {
 875                         /* first check if it's on the end if current chunk */
 876                         if(seek-offset == chunk->size) {
 877                                 offset+= chunk->size;
 878                                 chunk= chunk->next;
 879                         }
 880
 881                         /* debug, should never happen */
 882                         if(chunk==NULL) {
 883                                 printf("illegal read, chunk zero\n");
 884                                 return 0;
 885                         }
 886
 887                         chunkoffset= seek-offset;
 888                         readsize= size-totread;
 889
 890                         /* data can be spread over multiple chunks, so clamp size
 891                          * to within this chunk, and then it will read further in
 892                          * the next chunk */
 893                         if(chunkoffset+readsize > chunk->size)
 894                                 readsize= chunk->size-chunkoffset;
 895
 896                         memcpy((char*)buffer+totread, chunk->buf+chunkoffset, readsize);
 897                         totread += readsize;
 898                         filedata->seek += readsize;
 899                         seek += readsize;
 900                 } while(totread < size);
 901
 902                 return totread;
 903         }
 904
 905         return 0;
 906 }
 907
 908 static FileData *filedata_new(void)
 909 {
 910         FileData *fd = MEM_callocN(sizeof(FileData), "FileData");
 911
 912         fd->filedes = -1;
 913         fd->gzfiledes = NULL;
 914
 915                 /* XXX, this doesn't need to be done all the time,
 916                  * but it keeps us reentrant,  remove once we have
 917                  * a lib that provides a nice lock. - zr
 918                  */
 919         fd->memsdna = DNA_sdna_from_data(DNAstr,  DNAlen,  0);
 920
 921         fd->datamap = oldnewmap_new();
 922         fd->globmap = oldnewmap_new();
 923         fd->libmap = oldnewmap_new();
 924
 925         return fd;
 926 }
 927
 928 static FileData *blo_decode_and_check(FileData *fd, ReportList *reports)
 929 {
 930         decode_blender_header(fd);
 931
 932         if (fd->flags & FD_FLAGS_FILE_OK) {
 933                 if (!read_file_dna(fd)) {
 934                         BKE_reportf(reports, RPT_ERROR, "Failed to read blend file: \"%s\", incomplete", fd->relabase);
 935                         blo_freefiledata(fd);
 936                         fd= NULL;
 937                 }
 938         }
 939         else {
 940                 BKE_reportf(reports, RPT_ERROR, "Failed to read blend file: \"%s\", not a blend file", fd->relabase);
 941                 blo_freefiledata(fd);
 942                 fd= NULL;
 943         }
 944
 945         return fd;
 946 }
 947
 948 /* cannot be called with relative paths anymore! */
 949 /* on each new library added, it now checks for the current FileData and expands relativeness */
 950 FileData *blo_openblenderfile(const char *filepath, ReportList *reports)
 951 {
 952         gzFile gzfile;
 953         errno= 0;
 954         gzfile= gzopen(filepath, "rb");
 955
 956         if (gzfile == (gzFile)Z_NULL) {
 957                 BKE_reportf(reports, RPT_ERROR, "Unable to open \"%s\": %s.", filepath, errno ? strerror(errno) : "Unknown error reading file");
 958                 return NULL;
 959         } else {
 960                 FileData *fd = filedata_new();
 961                 fd->gzfiledes = gzfile;
 962                 fd->read = fd_read_gzip_from_file;
 963
 964                 /* needed for library_append and read_libraries */
 965                 BLI_strncpy(fd->relabase, filepath, sizeof(fd->relabase));
 966
 967                 return blo_decode_and_check(fd, reports);
 968         }
 969 }
 970
 971 FileData *blo_openblendermemory(void *mem, int memsize, ReportList *reports)
 972 {
 973         if (!mem || memsize<SIZEOFBLENDERHEADER) {
 974                 BKE_report(reports, RPT_ERROR, (mem)? "Unable to read": "Unable to open");
 975                 return NULL;
 976         } else {
 977                 FileData *fd= filedata_new();
 978                 fd->buffer= mem;
 979                 fd->buffersize= memsize;
 980                 fd->read= fd_read_from_memory;
 981                 fd->flags|= FD_FLAGS_NOT_MY_BUFFER;
 982
 983                 return blo_decode_and_check(fd, reports);
 984         }
 985 }
 986
 987 FileData *blo_openblendermemfile(MemFile *memfile, ReportList *reports)
 988 {
 989         if (!memfile) {
 990                 BKE_report(reports, RPT_ERROR, "Unable to open blend <memory>");
 991                 return NULL;
 992         } else {
 993                 FileData *fd= filedata_new();
 994                 fd->memfile= memfile;
 995
 996                 fd->read= fd_read_from_memfile;
 997                 fd->flags|= FD_FLAGS_NOT_MY_BUFFER;
 998
 999                 return blo_decode_and_check(fd, reports);
1000         }
1001 }
1002
1003
1004 void blo_freefiledata(FileData *fd)
1005 {
1006         if (fd) {
1007
1008                 if (fd->filedes != -1) {
1009                         close(fd->filedes);
1010                 }
1011
1012                 if (fd->gzfiledes != NULL)
1013                 {
1014                         gzclose(fd->gzfiledes);
1015                 }
1016
1017                 if (fd->buffer && !(fd->flags & FD_FLAGS_NOT_MY_BUFFER)) {
1018                         MEM_freeN(fd->buffer);
1019                         fd->buffer = NULL;
1020                 }
1021
1022                 // Free all BHeadN data blocks
1023                 BLI_freelistN(&fd->listbase);
1024
1025                 if (fd->memsdna)
1026                         DNA_sdna_free(fd->memsdna);
1027                 if (fd->filesdna)
1028                         DNA_sdna_free(fd->filesdna);
1029                 if (fd->compflags)
1030                         MEM_freeN(fd->compflags);
1031
1032                 if (fd->datamap)
1033                         oldnewmap_free(fd->datamap);
1034                 if (fd->globmap)
1035                         oldnewmap_free(fd->globmap);
1036                 if (fd->imamap)
1037                         oldnewmap_free(fd->imamap);
1038                 if (fd->libmap && !(fd->flags & FD_FLAGS_NOT_MY_LIBMAP))
1039                         oldnewmap_free(fd->libmap);
1040                 if (fd->bheadmap)
1041                         MEM_freeN(fd->bheadmap);
1042
1043                 MEM_freeN(fd);
1044         }
1045 }
1046
1047 /* ************ DIV ****************** */
1048
1049 int BLO_has_bfile_extension(char *str)
1050 {
1051         return (BLI_testextensie(str, ".ble") || BLI_testextensie(str, ".blend") || BLI_testextensie(str, ".blend.gz"));
1052 }
1053
1054 int BLO_is_a_library(const char *path, char *dir, char *group)
1055 {
1056         /* return ok when a blenderfile, in dir is the filename,
1057          * in group the type of libdata
1058          */
1059         int len;
1060         char *fd;
1061
1062         strcpy(dir, path);
1063         len= strlen(dir);
1064         if(len<7) return 0;
1065         if( dir[len-1] != '/' && dir[len-1] != '\\') return 0;
1066
1067         group[0]= 0;
1068         dir[len-1]= 0;
1069
1070         /* Find the last slash */
1071         fd= BLI_last_slash(dir);
1072
1073         if(fd==NULL) return 0;
1074         *fd= 0;
1075         if(BLO_has_bfile_extension(fd+1)) {
1076                 /* the last part of the dir is a .blend file, no group follows */
1077                 *fd= '/'; /* put back the removed slash separating the dir and the .blend file name */
1078         }
1079         else {
1080                 char *gp = fd+1; // in case we have a .blend file, gp points to the group
1081
1082                 /* Find the last slash */
1083                 fd= BLI_last_slash(dir);
1084                 if (!fd || !BLO_has_bfile_extension(fd+1)) return 0;
1085
1086                 /* now we know that we are in a blend file and it is safe to
1087                    assume that gp actually points to a group */
1088                 if (strcmp("Screen", gp)!=0)
1089                         BLI_strncpy(group, gp, GROUP_MAX);
1090         }
1091         return 1;
1092 }
1093
1094 /* ************** OLD POINTERS ******************* */
1095
1096 static void *newdataadr(FileData *fd, void *adr)                /* only direct databocks */
1097 {
1098         return oldnewmap_lookup_and_inc(fd->datamap, adr);
1099 }
1100
1101 static void *newglobadr(FileData *fd, void *adr)                /* direct datablocks with global linking */
1102 {
1103         return oldnewmap_lookup_and_inc(fd->globmap, adr);
1104 }
1105
1106 static void *newimaadr(FileData *fd, void *adr)         /* used to restore image data after undo */
1107 {
1108         if(fd->imamap && adr)
1109                 return oldnewmap_lookup_and_inc(fd->imamap, adr);
1110         return NULL;
1111 }
1112
1113
1114 static void *newlibadr(FileData *fd, void *lib, void *adr)              /* only lib data */
1115 {
1116         return oldnewmap_liblookup(fd->libmap, adr, lib);
1117 }
1118
1119 static void *newlibadr_us(FileData *fd, void *lib, void *adr)   /* increases user number */
1120 {
1121         ID *id= newlibadr(fd, lib, adr);
1122
1123         if(id)
1124                 id->us++;
1125
1126         return id;
1127 }
1128
1129 static void change_idid_adr_fd(FileData *fd, void *old, void *new)
1130 {
1131         int i;
1132
1133         for (i=0; i<fd->libmap->nentries; i++) {
1134                 OldNew *entry= &fd->libmap->entries[i];
1135
1136                 if (old==entry->newp && entry->nr==ID_ID) {
1137                         entry->newp= new;
1138                         if(new) entry->nr= GS( ((ID *)new)->name );
1139                         break;
1140                 }
1141         }
1142 }
1143
1144 static void change_idid_adr(ListBase *mainlist, FileData *basefd, void *old, void *new)
1145 {
1146         Main *mainptr;
1147
1148         for(mainptr= mainlist->first; mainptr; mainptr= mainptr->next) {
1149                 FileData *fd;
1150
1151                 if(mainptr->curlib) fd= mainptr->curlib->filedata;
1152                 else fd= basefd;
1153
1154                 if(fd) {
1155                         change_idid_adr_fd(fd, old, new);
1156                 }
1157         }
1158 }
1159
1160 /* lib linked proxy objects point to our local data, we need
1161  * to clear that pointer before reading the undo memfile since
1162  * the object might be removed, it is set again in reading
1163  * if the local object still exists */
1164 void blo_clear_proxy_pointers_from_lib(Main *oldmain)
1165 {
1166         Object *ob= oldmain->object.first;
1167
1168         for(;ob; ob= ob->id.next)
1169                 if(ob->id.lib)
1170                         ob->proxy_from= NULL;
1171 }
1172
1173 void blo_make_image_pointer_map(FileData *fd, Main *oldmain)
1174 {
1175         Image *ima= oldmain->image.first;
1176         Scene *sce= oldmain->scene.first;
1177         int a;
1178
1179         fd->imamap= oldnewmap_new();
1180
1181         for(;ima; ima= ima->id.next) {
1182                 Link *ibuf= ima->ibufs.first;
1183                 for(; ibuf; ibuf= ibuf->next)
1184                         oldnewmap_insert(fd->imamap, ibuf, ibuf, 0);
1185                 if(ima->gputexture)
1186                         oldnewmap_insert(fd->imamap, ima->gputexture, ima->gputexture, 0);
1187                 for(a=0; a<IMA_MAX_RENDER_SLOT; a++)
1188                         if(ima->renders[a])
1189                                 oldnewmap_insert(fd->imamap, ima->renders[a], ima->renders[a], 0);
1190         }
1191         for(; sce; sce= sce->id.next) {
1192                 if(sce->nodetree) {
1193                         bNode *node;
1194                         for(node= sce->nodetree->nodes.first; node; node= node->next)
1195                                 oldnewmap_insert(fd->imamap, node->preview, node->preview, 0);
1196                 }
1197         }
1198 }
1199
1200 /* set old main image ibufs to zero if it has been restored */
1201 /* this works because freeing old main only happens after this call */
1202 void blo_end_image_pointer_map(FileData *fd, Main *oldmain)
1203 {
1204         OldNew *entry= fd->imamap->entries;
1205         Image *ima= oldmain->image.first;
1206         Scene *sce= oldmain->scene.first;
1207         int i;
1208
1209         /* used entries were restored, so we put them to zero */
1210         for (i=0; i<fd->imamap->nentries; i++, entry++) {
1211                 if (entry->nr>0)
1212                         entry->newp= NULL;
1213         }
1214
1215         for(;ima; ima= ima->id.next) {
1216                 Link *ibuf, *next;
1217
1218                 /* this mirrors direct_link_image */
1219                 for(ibuf= ima->ibufs.first; ibuf; ibuf= next) {
1220                         next= ibuf->next;
1221                         if(NULL==newimaadr(fd, ibuf)) { /* so was restored */
1222                                 BLI_remlink(&ima->ibufs, ibuf);
1223                                 ima->bindcode= 0;
1224                                 ima->gputexture= NULL;
1225                         }
1226                 }
1227                 for(i=0; i<IMA_MAX_RENDER_SLOT; i++)
1228                         ima->renders[i]= newimaadr(fd, ima->renders[i]);
1229
1230                 ima->gputexture= newimaadr(fd, ima->gputexture);
1231         }
1232         for(; sce; sce= sce->id.next) {
1233                 if(sce->nodetree) {
1234                         bNode *node;
1235                         for(node= sce->nodetree->nodes.first; node; node= node->next)
1236                                 node->preview= newimaadr(fd, node->preview);
1237                 }
1238         }
1239 }
1240
1241 /* undo file support: add all library pointers in lookup */
1242 void blo_add_library_pointer_map(ListBase *mainlist, FileData *fd)
1243 {
1244         Main *ptr= mainlist->first;
1245         ListBase *lbarray[MAX_LIBARRAY];
1246
1247         for(ptr= ptr->next; ptr; ptr= ptr->next) {
1248                 int i= set_listbasepointers(ptr, lbarray);
1249                 while(i--) {
1250                         ID *id;
1251                         for(id= lbarray[i]->first; id; id= id->next)
1252                                 oldnewmap_insert(fd->libmap, id, id, GS(id->name));
1253                 }
1254         }
1255 }
1256
1257
1258 /* ********** END OLD POINTERS ****************** */
1259 /* ********** READ FILE ****************** */
1260
1261 static void switch_endian_structs(struct SDNA *filesdna, BHead *bhead)
1262 {
1263         int blocksize, nblocks;
1264         char *data;
1265
1266         data= (char *)(bhead+1);
1267         blocksize= filesdna->typelens[ filesdna->structs[bhead->SDNAnr][0] ];
1268
1269         nblocks= bhead->nr;
1270         while(nblocks--) {
1271                 DNA_struct_switch_endian(filesdna, bhead->SDNAnr, data);
1272
1273                 data+= blocksize;
1274         }
1275 }
1276
1277 static void *read_struct(FileData *fd, BHead *bh, const char *blockname)
1278 {
1279         void *temp= NULL;
1280
1281         if (bh->len) {
1282                 /* switch is based on file dna */
1283                 if (bh->SDNAnr && (fd->flags & FD_FLAGS_SWITCH_ENDIAN))
1284                         switch_endian_structs(fd->filesdna, bh);
1285
1286                 if (fd->compflags[bh->SDNAnr]) {        /* flag==0: doesn't exist anymore */
1287                         if(fd->compflags[bh->SDNAnr]==2) {
1288                                 temp= DNA_struct_reconstruct(fd->memsdna, fd->filesdna, fd->compflags, bh->SDNAnr, bh->nr, (bh+1));
1289                         } else {
1290                                 temp= MEM_mallocN(bh->len, blockname);
1291                                 memcpy(temp, (bh+1), bh->len);
1292                         }
1293                 }
1294         }
1295
1296         return temp;
1297 }
1298
1299 static void link_list(FileData *fd, ListBase *lb)               /* only direct data */
1300 {
1301         Link *ln, *prev;
1302
1303         if(lb->first==NULL) return;
1304
1305         lb->first= newdataadr(fd, lb->first);
1306         ln= lb->first;
1307         prev= NULL;
1308         while(ln) {
1309                 ln->next= newdataadr(fd, ln->next);
1310                 ln->prev= prev;
1311                 prev= ln;
1312                 ln= ln->next;
1313         }
1314         lb->last= prev;
1315 }
1316
1317 static void link_glob_list(FileData *fd, ListBase *lb)          /* for glob data */
1318 {
1319         Link *ln, *prev;
1320         void *poin;
1321
1322         if(lb->first==NULL) return;
1323         poin= newdataadr(fd, lb->first);
1324         if(lb->first) {
1325                 oldnewmap_insert(fd->globmap, lb->first, poin, 0);
1326         }
1327         lb->first= poin;
1328
1329         ln= lb->first;
1330         prev= NULL;
1331         while(ln) {
1332                 poin= newdataadr(fd, ln->next);
1333                 if(ln->next) {
1334                         oldnewmap_insert(fd->globmap, ln->next, poin, 0);
1335                 }
1336                 ln->next= poin;
1337                 ln->prev= prev;
1338                 prev= ln;
1339                 ln= ln->next;
1340         }
1341         lb->last= prev;
1342 }
1343
1344 static void test_pointer_array(FileData *fd, void **mat)
1345 {
1346 #if defined(WIN32) && !defined(FREE_WINDOWS)
1347         __int64 *lpoin, *lmat;
1348 #else
1349         long long *lpoin, *lmat;
1350 #endif
1351         int *ipoin, *imat;
1352         size_t len;
1353
1354                 /* manually convert the pointer array in
1355                  * the old dna format to a pointer array in
1356                  * the new dna format.
1357                  */
1358         if(*mat) {
1359                 len= MEM_allocN_len(*mat)/fd->filesdna->pointerlen;
1360
1361                 if(fd->filesdna->pointerlen==8 && fd->memsdna->pointerlen==4) {
1362                         ipoin=imat= MEM_mallocN( len*4, "newmatar");
1363                         lpoin= *mat;
1364
1365                         while(len-- > 0) {
1366                                 if((fd->flags & FD_FLAGS_SWITCH_ENDIAN))
1367                                         SWITCH_LONGINT(*lpoin);
1368                                 *ipoin= (int) ((*lpoin) >> 3);
1369                                 ipoin++;
1370                                 lpoin++;
1371                         }
1372                         MEM_freeN(*mat);
1373                         *mat= imat;
1374                 }
1375
1376                 if(fd->filesdna->pointerlen==4 && fd->memsdna->pointerlen==8) {
1377                         lpoin=lmat= MEM_mallocN( len*8, "newmatar");
1378                         ipoin= *mat;
1379
1380                         while(len-- > 0) {
1381                                 *lpoin= *ipoin;
1382                                 ipoin++;
1383                                 lpoin++;
1384                         }
1385                         MEM_freeN(*mat);
1386                         *mat= lmat;
1387                 }
1388         }
1389 }
1390
1391 /* ************ READ ID Properties *************** */
1392
1393 static void IDP_DirectLinkProperty(IDProperty *prop, int switch_endian, FileData *fd);
1394 static void IDP_LibLinkProperty(IDProperty *prop, int switch_endian, FileData *fd);
1395
1396 static void IDP_DirectLinkIDPArray(IDProperty *prop, int switch_endian, FileData *fd)
1397 {
1398         IDProperty *array;
1399         int i;
1400
1401         /*since we didn't save the extra buffer, set totallen to len.*/
1402         prop->totallen = prop->len;
1403         prop->data.pointer = newdataadr(fd, prop->data.pointer);
1404
1405         array= (IDProperty*) prop->data.pointer;
1406
1407         /* note!, idp-arrays didn't exist in 2.4x, so the pointer will be cleared
1408          * theres not really anything we can do to correct this, at least dont crash */
1409         if(array==NULL) {
1410                 prop->len= 0;
1411                 prop->totallen= 0;
1412         }
1413
1414
1415         for(i=0; i<prop->len; i++)
1416                 IDP_DirectLinkProperty(&array[i], switch_endian, fd);
1417 }
1418
1419 static void IDP_DirectLinkArray(IDProperty *prop, int switch_endian, FileData *fd)
1420 {
1421         IDProperty **array;
1422         int i;
1423
1424         /*since we didn't save the extra buffer, set totallen to len.*/
1425         prop->totallen = prop->len;
1426         prop->data.pointer = newdataadr(fd, prop->data.pointer);
1427
1428         if(prop->subtype == IDP_GROUP) {
1429                 test_pointer_array(fd, prop->data.pointer);
1430                 array= prop->data.pointer;
1431
1432                 for(i=0; i<prop->len; i++)
1433                         IDP_DirectLinkProperty(array[i], switch_endian, fd);
1434         }
1435         else if(prop->subtype == IDP_DOUBLE) {
1436                 if (switch_endian) {
1437                         for (i=0; i<prop->len; i++) {
1438                                 SWITCH_LONGINT(((double*)prop->data.pointer)[i]);
1439                         }
1440                 }
1441         }
1442         else {
1443                 if (switch_endian) {
1444                         for (i=0; i<prop->len; i++) {
1445                                 SWITCH_INT(((int*)prop->data.pointer)[i]);
1446                         }
1447                 }
1448         }
1449 }
1450
1451 static void IDP_DirectLinkString(IDProperty *prop, FileData *fd)
1452 {
1453         /*since we didn't save the extra string buffer, set totallen to len.*/
1454         prop->totallen = prop->len;
1455         prop->data.pointer = newdataadr(fd, prop->data.pointer);
1456 }
1457
1458 static void IDP_DirectLinkGroup(IDProperty *prop, int switch_endian, FileData *fd)
1459 {
1460         ListBase *lb = &prop->data.group;
1461         IDProperty *loop;
1462
1463         link_list(fd, lb);
1464
1465         /*Link child id properties now*/
1466         for (loop=prop->data.group.first; loop; loop=loop->next) {
1467                 IDP_DirectLinkProperty(loop, switch_endian, fd);
1468         }
1469 }
1470
1471 static void IDP_DirectLinkProperty(IDProperty *prop, int switch_endian, FileData *fd)
1472 {
1473         switch (prop->type) {
1474                 case IDP_GROUP:
1475                         IDP_DirectLinkGroup(prop, switch_endian, fd);
1476                         break;
1477                 case IDP_STRING:
1478                         IDP_DirectLinkString(prop, fd);
1479                         break;
1480                 case IDP_ARRAY:
1481                         IDP_DirectLinkArray(prop, switch_endian, fd);
1482                         break;
1483                 case IDP_IDPARRAY:
1484                         IDP_DirectLinkIDPArray(prop, switch_endian, fd);
1485                         break;
1486                 case IDP_DOUBLE:
1487                         /*erg, stupid doubles.  since I'm storing them
1488                          in the same field as int val; val2 in the
1489                          IDPropertyData struct, they have to deal with
1490                          endianness specifically
1491
1492                          in theory, val and val2 would've already been swapped
1493                          if switch_endian is true, so we have to first unswap
1494                          them then reswap them as a single 64-bit entity.
1495                          */
1496
1497                         if (switch_endian) {
1498                                 SWITCH_INT(prop->data.val);
1499                                 SWITCH_INT(prop->data.val2);
1500                                 SWITCH_LONGINT(prop->data.val);
1501                         }
1502
1503                         break;
1504         }
1505 }
1506
1507 /*stub function*/
1508 static void IDP_LibLinkProperty(IDProperty *UNUSED(prop), int UNUSED(switch_endian), FileData *UNUSED(fd))
1509 {
1510 }
1511
1512 /* ************ READ CurveMapping *************** */
1513
1514 /* cuma itself has been read! */
1515 static void direct_link_curvemapping(FileData *fd, CurveMapping *cumap)
1516 {
1517         int a;
1518
1519         /* flag seems to be able to hang? Maybe old files... not bad to clear anyway */
1520         cumap->flag &= ~CUMA_PREMULLED;
1521
1522         for(a=0; a<CM_TOT; a++) {
1523                 cumap->cm[a].curve= newdataadr(fd, cumap->cm[a].curve);
1524                 cumap->cm[a].table= NULL;
1525                 cumap->cm[a].premultable= NULL;
1526         }
1527 }
1528
1529 /* ************ READ Brush *************** */
1530 /* library brush linking after fileread */
1531 static void lib_link_brush(FileData *fd, Main *main)
1532 {
1533         Brush *brush;
1534
1535         /* only link ID pointers */
1536         for(brush= main->brush.first; brush; brush= brush->id.next) {
1537                 if(brush->id.flag & LIB_NEEDLINK) {
1538                         brush->id.flag -= LIB_NEEDLINK;
1539
1540                         brush->mtex.tex= newlibadr_us(fd, brush->id.lib, brush->mtex.tex);
1541                         brush->clone.image= newlibadr_us(fd, brush->id.lib, brush->clone.image);
1542                 }
1543         }
1544 }
1545
1546 static void direct_link_brush(FileData *fd, Brush *brush)
1547 {
1548         /* brush itself has been read */
1549
1550         /* fallof curve */
1551         brush->curve= newdataadr(fd, brush->curve);
1552         if(brush->curve)
1553                 direct_link_curvemapping(fd, brush->curve);
1554         else
1555                 brush_curve_preset(brush, CURVE_PRESET_SHARP);
1556
1557         brush->preview= NULL;
1558         brush->icon_imbuf= NULL;
1559 }
1560
1561 static void direct_link_script(FileData *UNUSED(fd), Script *script)
1562 {
1563         script->id.us = 1;
1564         SCRIPT_SET_NULL(script)
1565 }
1566
1567
1568 /* ************ READ PACKEDFILE *************** */
1569
1570 static PackedFile *direct_link_packedfile(FileData *fd, PackedFile *oldpf)
1571 {
1572         PackedFile *pf= newdataadr(fd, oldpf);
1573
1574         if (pf) {
1575                 pf->data= newdataadr(fd, pf->data);
1576         }
1577
1578         return pf;
1579 }
1580
1581 /* ************ READ IMAGE PREVIEW *************** */
1582
1583 static PreviewImage *direct_link_preview_image(FileData *fd, PreviewImage *old_prv)
1584 {
1585         PreviewImage *prv= newdataadr(fd, old_prv);
1586
1587         if (prv) {
1588                 int i;
1589                 for (i=0; i < NUM_ICON_SIZES; ++i) {
1590                         if (prv->rect[i]) {
1591                                 prv->rect[i] = newdataadr(fd, prv->rect[i]);
1592                         }
1593                 }
1594         }
1595
1596         return prv;
1597 }
1598
1599 /* ************ READ ANIMATION STUFF ***************** */
1600
1601 /* Legacy Data Support (for Version Patching) ----------------------------- */
1602
1603 // XXX depreceated - old animation system
1604 static void lib_link_ipo(FileData *fd, Main *main)
1605 {
1606         Ipo *ipo;
1607
1608         ipo= main->ipo.first;
1609         while(ipo) {
1610                 if(ipo->id.flag & LIB_NEEDLINK) {
1611                         IpoCurve *icu;
1612                         for(icu= ipo->curve.first; icu; icu= icu->next) {
1613                                 if(icu->driver)
1614                                         icu->driver->ob= newlibadr(fd, ipo->id.lib, icu->driver->ob);
1615                         }
1616                         ipo->id.flag -= LIB_NEEDLINK;
1617                 }
1618                 ipo= ipo->id.next;
1619         }
1620 }
1621
1622 // XXX depreceated - old animation system
1623 static void direct_link_ipo(FileData *fd, Ipo *ipo)
1624 {
1625         IpoCurve *icu;
1626
1627         link_list(fd, &(ipo->curve));
1628         icu= ipo->curve.first;
1629         while(icu) {
1630                 icu->bezt= newdataadr(fd, icu->bezt);
1631                 icu->bp= newdataadr(fd, icu->bp);
1632                 icu->driver= newdataadr(fd, icu->driver);
1633                 icu= icu->next;
1634         }
1635 }
1636
1637 // XXX depreceated - old animation system
1638 static void lib_link_nlastrips(FileData *fd, ID *id, ListBase *striplist)
1639 {
1640         bActionStrip *strip;
1641         bActionModifier *amod;
1642
1643         for (strip=striplist->first; strip; strip=strip->next){
1644                 strip->object = newlibadr(fd, id->lib, strip->object);
1645                 strip->act = newlibadr_us(fd, id->lib, strip->act);
1646                 strip->ipo = newlibadr(fd, id->lib, strip->ipo);
1647                 for(amod= strip->modifiers.first; amod; amod= amod->next)
1648                         amod->ob= newlibadr(fd, id->lib, amod->ob);
1649         }
1650 }
1651
1652 // XXX depreceated - old animation system
1653 static void direct_link_nlastrips(FileData *fd, ListBase *strips)
1654 {
1655         bActionStrip *strip;
1656
1657         link_list(fd, strips);
1658
1659         for(strip= strips->first; strip; strip= strip->next)
1660                 link_list(fd, &strip->modifiers);
1661 }
1662
1663 // XXX depreceated - old animation system
1664 static void lib_link_constraint_channels(FileData *fd, ID *id, ListBase *chanbase)
1665 {
1666         bConstraintChannel *chan;
1667
1668         for (chan=chanbase->first; chan; chan=chan->next){
1669                 chan->ipo = newlibadr_us(fd, id->lib, chan->ipo);
1670         }
1671 }
1672
1673 /* Data Linking ----------------------------- */
1674
1675 static void lib_link_fmodifiers(FileData *fd, ID *id, ListBase *list)
1676 {
1677         FModifier *fcm;
1678
1679         for (fcm= list->first; fcm; fcm= fcm->next) {
1680                 /* data for specific modifiers */
1681                 switch (fcm->type) {
1682                         case FMODIFIER_TYPE_PYTHON:
1683                         {
1684                                 FMod_Python *data= (FMod_Python *)fcm->data;
1685                                 data->script = newlibadr(fd, id->lib, data->script);
1686                         }
1687                                 break;
1688                 }
1689         }
1690 }
1691
1692 static void lib_link_fcurves(FileData *fd, ID *id, ListBase *list)
1693 {
1694         FCurve *fcu;
1695
1696         if (list == NULL)
1697                 return;
1698
1699         /* relink ID-block references... */
1700         for (fcu= list->first; fcu; fcu= fcu->next) {
1701                 /* driver data */
1702                 if (fcu->driver) {
1703                         ChannelDriver *driver= fcu->driver;
1704                         DriverVar *dvar;
1705
1706                         for (dvar= driver->variables.first; dvar; dvar= dvar->next) {
1707                                 DRIVER_TARGETS_LOOPER(dvar)
1708                                 {
1709                                         /* only relink if still used */
1710                                         if (tarIndex < dvar->num_targets)
1711                                                 dtar->id= newlibadr(fd, id->lib, dtar->id);
1712                                         else
1713                                                 dtar->id= NULL;
1714                                 }
1715                                 DRIVER_TARGETS_LOOPER_END
1716                         }
1717                 }
1718
1719                 /* modifiers */
1720                 lib_link_fmodifiers(fd, id, &fcu->modifiers);
1721         }
1722 }
1723
1724
1725 /* NOTE: this assumes that link_list has already been called on the list */
1726 static void direct_link_fmodifiers(FileData *fd, ListBase *list)
1727 {
1728         FModifier *fcm;
1729
1730         for (fcm= list->first; fcm; fcm= fcm->next) {
1731                 /* relink general data */
1732                 fcm->data = newdataadr(fd, fcm->data);
1733                 fcm->edata= NULL;
1734
1735                 /* do relinking of data for specific types */
1736                 switch (fcm->type) {
1737                         case FMODIFIER_TYPE_GENERATOR:
1738                         {
1739                                 FMod_Generator *data= (FMod_Generator *)fcm->data;
1740
1741                                 data->coefficients= newdataadr(fd, data->coefficients);
1742
1743                                 if(fd->flags & FD_FLAGS_SWITCH_ENDIAN) {
1744                                         unsigned int a;
1745                                         for(a = 0; a < data->arraysize; a++)
1746                                                 SWITCH_INT(data->coefficients[a]);
1747                                 }
1748                         }
1749                                 break;
1750                         case FMODIFIER_TYPE_ENVELOPE:
1751                         {
1752                                 FMod_Envelope *data= (FMod_Envelope *)fcm->data;
1753
1754                                 data->data= newdataadr(fd, data->data);
1755                         }
1756                                 break;
1757                         case FMODIFIER_TYPE_PYTHON:
1758                         {
1759                                 FMod_Python *data= (FMod_Python *)fcm->data;
1760
1761                                 data->prop = newdataadr(fd, data->prop);
1762                                 IDP_DirectLinkProperty(data->prop, (fd->flags & FD_FLAGS_SWITCH_ENDIAN), fd);
1763                         }
1764                                 break;
1765                 }
1766         }
1767 }
1768
1769 /* NOTE: this assumes that link_list has already been called on the list */
1770 static void direct_link_fcurves(FileData *fd, ListBase *list)
1771 {
1772         FCurve *fcu;
1773
1774         /* link F-Curve data to F-Curve again (non ID-libs) */
1775         for (fcu= list->first; fcu; fcu= fcu->next) {
1776                 /* curve data */
1777                 fcu->bezt= newdataadr(fd, fcu->bezt);
1778                 fcu->fpt= newdataadr(fd, fcu->fpt);
1779
1780                 /* rna path */
1781                 fcu->rna_path= newdataadr(fd, fcu->rna_path);
1782
1783                 /* group */
1784                 fcu->grp= newdataadr(fd, fcu->grp);
1785
1786                 /* driver */
1787                 fcu->driver= newdataadr(fd, fcu->driver);
1788                 if (fcu->driver) {
1789                         ChannelDriver *driver= fcu->driver;
1790                         DriverVar *dvar;
1791
1792                         driver->expr_comp= NULL;
1793
1794                         /* relink variables, targets and their paths */
1795                         link_list(fd, &driver->variables);
1796                         for (dvar= driver->variables.first; dvar; dvar= dvar->next) {
1797                                 DRIVER_TARGETS_LOOPER(dvar)
1798                                 {
1799                                         /* only relink the targets being used */
1800                                         if (tarIndex < dvar->num_targets)
1801                                                 dtar->rna_path= newdataadr(fd, dtar->rna_path);
1802                                         else
1803                                                 dtar->rna_path= NULL;
1804                                 }
1805                                 DRIVER_TARGETS_LOOPER_END
1806                         }
1807                 }
1808
1809                 /* modifiers */
1810                 link_list(fd, &fcu->modifiers);
1811                 direct_link_fmodifiers(fd, &fcu->modifiers);
1812         }
1813 }
1814
1815
1816 static void lib_link_action(FileData *fd, Main *main)
1817 {
1818         bAction *act;
1819         bActionChannel *chan;
1820
1821         for (act= main->action.first; act; act= act->id.next) {
1822                 if (act->id.flag & LIB_NEEDLINK) {
1823                         act->id.flag -= LIB_NEEDLINK;
1824
1825 // XXX depreceated - old animation system <<<
1826                         for (chan=act->chanbase.first; chan; chan=chan->next) {
1827                                 chan->ipo= newlibadr_us(fd, act->id.lib, chan->ipo);
1828                                 lib_link_constraint_channels(fd, &act->id, &chan->constraintChannels);
1829                         }
1830 // >>> XXX depreceated - old animation system
1831
1832                         lib_link_fcurves(fd, &act->id, &act->curves);
1833                 }
1834         }
1835 }
1836
1837 static void direct_link_action(FileData *fd, bAction *act)
1838 {
1839         bActionChannel *achan; // XXX depreceated - old animation system
1840         bActionGroup *agrp;
1841
1842         link_list(fd, &act->curves);
1843         link_list(fd, &act->chanbase); // XXX depreceated - old animation system
1844         link_list(fd, &act->groups);
1845         link_list(fd, &act->markers);
1846
1847 // XXX depreceated - old animation system <<<
1848         for (achan = act->chanbase.first; achan; achan=achan->next) {
1849                 achan->grp= newdataadr(fd, achan->grp);
1850
1851                 link_list(fd, &achan->constraintChannels);
1852         }
1853 // >>> XXX depreceated - old animation system
1854
1855         direct_link_fcurves(fd, &act->curves);
1856
1857         for (agrp = act->groups.first; agrp; agrp= agrp->next) {
1858                 agrp->channels.first= newdataadr(fd, agrp->channels.first);
1859                 agrp->channels.last= newdataadr(fd, agrp->channels.last);
1860         }
1861 }
1862
1863 static void lib_link_nladata_strips(FileData *fd, ID *id, ListBase *list)
1864 {
1865         NlaStrip *strip;
1866
1867         for (strip= list->first; strip; strip= strip->next) {
1868                 /* check strip's children */
1869                 lib_link_nladata_strips(fd, id, &strip->strips);
1870
1871                 /* check strip's F-Curves */
1872                 lib_link_fcurves(fd, id, &strip->fcurves);
1873
1874                 /* reassign the counted-reference to action */
1875                 strip->act = newlibadr_us(fd, id->lib, strip->act);
1876
1877                 /* fix action id-root (i.e. if it comes from a pre 2.57 .blend file) */
1878                 if ((strip->act) && (strip->act->idroot == 0))
1879                         strip->act->idroot = GS(id->name);
1880         }
1881 }
1882
1883 static void lib_link_nladata(FileData *fd, ID *id, ListBase *list)
1884 {
1885         NlaTrack *nlt;
1886
1887         /* we only care about the NLA strips inside the tracks */
1888         for (nlt= list->first; nlt; nlt= nlt->next) {
1889                 lib_link_nladata_strips(fd, id, &nlt->strips);
1890         }
1891 }
1892
1893 /* This handles Animato NLA-Strips linking
1894  * NOTE: this assumes that link_list has already been called on the list
1895  */
1896 static void direct_link_nladata_strips(FileData *fd, ListBase *list)
1897 {
1898         NlaStrip *strip;
1899
1900         for (strip= list->first; strip; strip= strip->next) {
1901                 /* strip's child strips */
1902                 link_list(fd, &strip->strips);
1903                 direct_link_nladata_strips(fd, &strip->strips);
1904
1905                 /* strip's F-Curves */
1906                 link_list(fd, &strip->fcurves);
1907                 direct_link_fcurves(fd, &strip->fcurves);
1908
1909                 /* strip's F-Modifiers */
1910                 link_list(fd, &strip->modifiers);
1911                 direct_link_modifiers(fd, &strip->modifiers);
1912         }
1913 }
1914
1915 /* NOTE: this assumes that link_list has already been called on the list */
1916 static void direct_link_nladata(FileData *fd, ListBase *list)
1917 {
1918         NlaTrack *nlt;
1919
1920         for (nlt= list->first; nlt; nlt= nlt->next) {
1921                 /* relink list of strips */
1922                 link_list(fd, &nlt->strips);
1923
1924                 /* relink strip data */
1925                 direct_link_nladata_strips(fd, &nlt->strips);
1926         }
1927 }
1928
1929 /* ------- */
1930
1931 static void lib_link_keyingsets(FileData *fd, ID *id, ListBase *list)
1932 {
1933         KeyingSet *ks;
1934         KS_Path *ksp;
1935
1936         /* here, we're only interested in the ID pointer stored in some of the paths */
1937         for (ks= list->first; ks; ks= ks->next) {
1938                 for (ksp= ks->paths.first; ksp; ksp= ksp->next) {
1939                         ksp->id= newlibadr(fd, id->lib, ksp->id);
1940                 }
1941         }
1942 }
1943
1944 /* NOTE: this assumes that link_list has already been called on the list */
1945 static void direct_link_keyingsets(FileData *fd, ListBase *list)
1946 {
1947         KeyingSet *ks;
1948         KS_Path *ksp;
1949
1950         /* link KeyingSet data to KeyingSet again (non ID-libs) */
1951         for (ks= list->first; ks; ks= ks->next) {
1952                 /* paths */
1953                 link_list(fd, &ks->paths);
1954
1955                 for (ksp= ks->paths.first; ksp; ksp= ksp->next) {
1956                         /* rna path */
1957                         ksp->rna_path= newdataadr(fd, ksp->rna_path);
1958                 }
1959         }
1960 }
1961
1962 /* ------- */
1963
1964 static void lib_link_animdata(FileData *fd, ID *id, AnimData *adt)
1965 {
1966         if (adt == NULL)
1967                 return;
1968
1969         /* link action data */
1970         adt->action= newlibadr_us(fd, id->lib, adt->action);
1971         adt->tmpact= newlibadr_us(fd, id->lib, adt->tmpact);
1972
1973         /* fix action id-roots (i.e. if they come from a pre 2.57 .blend file) */
1974         if ((adt->action) && (adt->action->idroot == 0))
1975                 adt->action->idroot = GS(id->name);
1976         if ((adt->tmpact) && (adt->tmpact->idroot == 0))
1977                 adt->tmpact->idroot = GS(id->name);
1978
1979         /* link drivers */
1980         lib_link_fcurves(fd, id, &adt->drivers);
1981
1982         /* overrides don't have lib-link for now, so no need to do anything */
1983
1984         /* link NLA-data */
1985         lib_link_nladata(fd, id, &adt->nla_tracks);
1986 }
1987
1988 static void direct_link_animdata(FileData *fd, AnimData *adt)
1989 {
1990         /* NOTE: must have called newdataadr already before doing this... */
1991         if (adt == NULL)
1992                 return;
1993
1994         /* link drivers */
1995         link_list(fd, &adt->drivers);
1996         direct_link_fcurves(fd, &adt->drivers);
1997
1998         /* link overrides */
1999         // TODO...
2000
2001         /* link NLA-data */
2002         link_list(fd, &adt->nla_tracks);
2003         direct_link_nladata(fd, &adt->nla_tracks);
2004
2005         /* relink active strip - even though strictly speaking this should only be used
2006          * if we're in 'tweaking mode', we need to be able to have this loaded back for
2007          * undo, but also since users may not exit tweakmode before saving (#24535)
2008          */
2009         // TODO: it's not really nice that anyone should be able to save the file in this
2010         //              state, but it's going to be too hard to enforce this single case...
2011         adt->actstrip= newdataadr(fd, adt->actstrip);
2012 }
2013
2014 /* ************ READ MOTION PATHS *************** */
2015
2016 /* direct data for cache */
2017 static void direct_link_motionpath(FileData *fd, bMotionPath *mpath)
2018 {
2019         /* sanity check */
2020         if (mpath == NULL)
2021                 return;
2022
2023         /* relink points cache */
2024         mpath->points= newdataadr(fd, mpath->points);
2025 }
2026
2027 /* ************ READ NODE TREE *************** */
2028
2029 /* singe node tree (also used for material/scene trees), ntree is not NULL */
2030 static void lib_link_ntree(FileData *fd, ID *id, bNodeTree *ntree)
2031 {
2032         bNode *node;
2033
2034         if(ntree->adt) lib_link_animdata(fd, &ntree->id, ntree->adt);
2035
2036         ntree->gpd= newlibadr_us(fd, id->lib, ntree->gpd);
2037
2038         for(node= ntree->nodes.first; node; node= node->next)
2039                 node->id= newlibadr_us(fd, id->lib, node->id);
2040 }
2041
2042 /* library ntree linking after fileread */
2043 static void lib_link_nodetree(FileData *fd, Main *main)
2044 {
2045         bNodeTree *ntree;
2046
2047         /* only link ID pointers */
2048         for(ntree= main->nodetree.first; ntree; ntree= ntree->id.next) {
2049                 if(ntree->id.flag & LIB_NEEDLINK) {
2050                         ntree->id.flag -= LIB_NEEDLINK;
2051                         lib_link_ntree(fd, &ntree->id, ntree);
2052                 }
2053         }
2054 }
2055
2056 /* updates group node socket own_index so that
2057  * external links to/from the group node are preserved.
2058  */
2059 static void lib_node_do_versions_group(bNode *gnode)
2060 {
2061         bNodeTree *ngroup= (bNodeTree*)gnode->id;
2062         bNode *intnode;
2063         bNodeSocket *sock, *gsock, *intsock;
2064         int found;
2065
2066         for (sock=gnode->outputs.first; sock; sock=sock->next) {
2067                 int old_index = sock->to_index;
2068                 for (gsock=ngroup->outputs.first; gsock; gsock=gsock->next) {
2069                         if (gsock->link && gsock->link->fromsock->own_index == old_index) {
2070                                 sock->own_index = gsock->own_index;
2071                                 break;
2072                         }
2073                 }
2074         }
2075         for (sock=gnode->inputs.first; sock; sock=sock->next) {
2076                 int old_index = sock->to_index;
2077                 /* can't use break in double loop */
2078                 found = 0;
2079                 for (intnode=ngroup->nodes.first; intnode && !found; intnode=intnode->next) {
2080                         for (intsock=intnode->inputs.first; intsock; intsock=intsock->next) {
2081                                 if (intsock->own_index == old_index && intsock->link) {
2082                                         sock->own_index = intsock->link->fromsock->own_index;
2083                                         found = 1;
2084                                         break;
2085                                 }
2086                         }
2087                 }
2088         }
2089 }
2090
2091 /* updates external links for all group nodes in a tree */
2092 static void lib_nodetree_do_versions_group(bNodeTree *ntree)
2093 {
2094         bNode *node;
2095
2096         for (node=ntree->nodes.first; node; node=node->next) {
2097                 if (node->type==NODE_GROUP) {
2098                         bNodeTree *ngroup= (bNodeTree*)node->id;
2099                         if (ngroup && (ngroup->flag & NTREE_DO_VERSIONS))
2100                                 lib_node_do_versions_group(node);
2101                 }
2102         }
2103 }
2104
2105 /* verify types for nodes and groups, all data has to be read */
2106 /* open = 0: appending/linking, open = 1: open new file (need to clean out dynamic
2107 * typedefs*/
2108 static void lib_verify_nodetree(Main *main, int UNUSED(open))
2109 {
2110         Scene *sce;
2111         Material *ma;
2112         Tex *tx;
2113         bNodeTree *ntree;
2114
2115         /* this crashes blender on undo/redo
2116                 if(open==1) {
2117                         reinit_nodesystem();
2118                 }*/
2119
2120         /* now create the own typeinfo structs an verify nodes */
2121         /* here we still assume no groups in groups */
2122         for(ntree= main->nodetree.first; ntree; ntree= ntree->id.next) {
2123                 ntreeVerifyTypes(ntree);                /* internal nodes, no groups! */
2124         }
2125
2126         {
2127                 /*int has_old_groups=0;*/ /*UNUSED*/
2128                 /* XXX this should actually be part of do_versions, but since we need
2129                  * finished library linking, it is not possible there. Instead in do_versions
2130                  * we have set the NTREE_DO_VERSIONS flag, so at this point we can do the
2131                  * actual group node updates.
2132                  */
2133                 for(ntree= main->nodetree.first; ntree; ntree= ntree->id.next) {
2134                         if (ntree->flag & NTREE_DO_VERSIONS) {
2135                                 /* this adds copies and links from all unlinked internal sockets to group inputs/outputs. */
2136                                 nodeGroupExposeAllSockets(ntree);
2137                                 /*has_old_groups = 1;*/ /*UNUSED*/
2138                         }
2139                 }
2140                 /* now verify all types in material trees, groups are set OK now */
2141                 for(ma= main->mat.first; ma; ma= ma->id.next) {
2142                         if(ma->nodetree)
2143                                 lib_nodetree_do_versions_group(ma->nodetree);
2144                 }
2145                 /* and scene trees */
2146                 for(sce= main->scene.first; sce; sce= sce->id.next) {
2147                         if(sce->nodetree)
2148                                 lib_nodetree_do_versions_group(sce->nodetree);
2149                 }
2150                 /* and texture trees */
2151                 for(tx= main->tex.first; tx; tx= tx->id.next) {
2152                         if(tx->nodetree)
2153                                 lib_nodetree_do_versions_group(tx->nodetree);
2154                 }
2155
2156                 for(ntree= main->nodetree.first; ntree; ntree= ntree->id.next)
2157                         ntree->flag &= ~NTREE_DO_VERSIONS;
2158         }
2159
2160         /* now verify all types in material trees, groups are set OK now */
2161         for(ma= main->mat.first; ma; ma= ma->id.next) {
2162                 if(ma->nodetree)
2163                         ntreeVerifyTypes(ma->nodetree);
2164         }
2165         /* and scene trees */
2166         for(sce= main->scene.first; sce; sce= sce->id.next) {
2167                 if(sce->nodetree)
2168                         ntreeVerifyTypes(sce->nodetree);
2169         }
2170         /* and texture trees */
2171         for(tx= main->tex.first; tx; tx= tx->id.next) {
2172                 if(tx->nodetree)
2173                         ntreeVerifyTypes(tx->nodetree);
2174         }
2175 }
2176
2177
2178
2179 /* ntree itself has been read! */
2180 static void direct_link_nodetree(FileData *fd, bNodeTree *ntree)
2181 {
2182         /* note: writing and reading goes in sync, for speed */
2183         bNode *node;
2184         bNodeSocket *sock;
2185         bNodeLink *link;
2186
2187         ntree->init= 0;         /* to set callbacks and force setting types */
2188         ntree->progress= NULL;
2189
2190         ntree->adt= newdataadr(fd, ntree->adt);
2191         direct_link_animdata(fd, ntree->adt);
2192
2193         link_list(fd, &ntree->nodes);
2194         for(node= ntree->nodes.first; node; node= node->next) {
2195                 if(node->type == NODE_DYNAMIC) {
2196                         node->custom1= 0;
2197                         node->custom1= BSET(node->custom1, NODE_DYNAMIC_LOADED);
2198                         node->typeinfo= NULL;
2199                 }
2200
2201                 node->storage= newdataadr(fd, node->storage);
2202                 if(node->storage) {
2203
2204                         /* could be handlerized at some point */
2205                         if(ntree->type==NTREE_SHADER && (node->type==SH_NODE_CURVE_VEC || node->type==SH_NODE_CURVE_RGB))
2206                                 direct_link_curvemapping(fd, node->storage);
2207                         else if(ntree->type==NTREE_COMPOSIT) {
2208                                 if( ELEM4(node->type, CMP_NODE_TIME, CMP_NODE_CURVE_VEC, CMP_NODE_CURVE_RGB, CMP_NODE_HUECORRECT))
2209                                         direct_link_curvemapping(fd, node->storage);
2210                                 else if(ELEM3(node->type, CMP_NODE_IMAGE, CMP_NODE_VIEWER, CMP_NODE_SPLITVIEWER))
2211                                         ((ImageUser *)node->storage)->ok= 1;
2212                         }
2213                         else if( ntree->type==NTREE_TEXTURE) {
2214                                 if(node->type==TEX_NODE_CURVE_RGB || node->type==TEX_NODE_CURVE_TIME)
2215                                         direct_link_curvemapping(fd, node->storage);
2216                                 else if(node->type==TEX_NODE_IMAGE)
2217                                         ((ImageUser *)node->storage)->ok= 1;
2218                         }
2219                 }
2220                 link_list(fd, &node->inputs);
2221                 link_list(fd, &node->outputs);
2222         }
2223         link_list(fd, &ntree->links);
2224
2225         /* external sockets */
2226         link_list(fd, &ntree->inputs);
2227         link_list(fd, &ntree->outputs);
2228
2229         /* and we connect the rest */
2230         for(node= ntree->nodes.first; node; node= node->next) {
2231                 node->preview= newimaadr(fd, node->preview);
2232                 node->lasty= 0;
2233                 for(sock= node->inputs.first; sock; sock= sock->next)
2234                         sock->link= newdataadr(fd, sock->link);
2235                 for(sock= node->outputs.first; sock; sock= sock->next)
2236                         sock->ns.data= NULL;
2237         }
2238         for(sock= ntree->outputs.first; sock; sock= sock->next)
2239                 sock->link= newdataadr(fd, sock->link);
2240
2241         for(link= ntree->links.first; link; link= link->next) {
2242                 link->fromnode= newdataadr(fd, link->fromnode);
2243                 link->tonode= newdataadr(fd, link->tonode);
2244                 link->fromsock= newdataadr(fd, link->fromsock);
2245                 link->tosock= newdataadr(fd, link->tosock);
2246         }
2247
2248         /* type verification is in lib-link */
2249 }
2250
2251 /* ************ READ ARMATURE ***************** */
2252
2253 /* temp struct used to transport needed info to lib_link_constraint_cb() */
2254 typedef struct tConstraintLinkData {
2255         FileData *fd;
2256         ID *id;
2257 } tConstraintLinkData;
2258 /* callback function used to relink constraint ID-links */
2259 static void lib_link_constraint_cb(bConstraint *UNUSED(con), ID **idpoin, void *userdata)
2260 {
2261         tConstraintLinkData *cld= (tConstraintLinkData *)userdata;
2262         *idpoin = newlibadr(cld->fd, cld->id->lib, *idpoin);
2263 }
2264
2265 static void lib_link_constraints(FileData *fd, ID *id, ListBase *conlist)
2266 {
2267         tConstraintLinkData cld;
2268         bConstraint *con;
2269
2270         /* legacy fixes */
2271         for (con = conlist->first; con; con=con->next) {
2272                 /* patch for error introduced by changing constraints (dunno how) */
2273                 /* if con->data type changes, dna cannot resolve the pointer! (ton) */
2274                 if(con->data==NULL) {
2275                         con->type= CONSTRAINT_TYPE_NULL;
2276                 }
2277                 /* own ipo, all constraints have it */
2278                 con->ipo= newlibadr_us(fd, id->lib, con->ipo); // XXX depreceated - old animation system
2279         }
2280
2281         /* relink all ID-blocks used by the constraints */
2282         cld.fd= fd;
2283         cld.id= id;
2284
2285         id_loop_constraints(conlist, lib_link_constraint_cb, &cld);
2286 }
2287
2288 static void direct_link_constraints(FileData *fd, ListBase *lb)
2289 {
2290         bConstraint *con;
2291
2292         link_list(fd, lb);
2293         for (con=lb->first; con; con=con->next) {
2294                 con->data = newdataadr(fd, con->data);
2295
2296                 switch (con->type) {
2297                         case CONSTRAINT_TYPE_PYTHON:
2298                         {
2299                                 bPythonConstraint *data= con->data;
2300
2301                                 link_list(fd, &data->targets);
2302
2303                                 data->prop = newdataadr(fd, data->prop);
2304                                 if (data->prop)
2305                                         IDP_DirectLinkProperty(data->prop, (fd->flags & FD_FLAGS_SWITCH_ENDIAN), fd);
2306                         }
2307                                 break;
2308                         case CONSTRAINT_TYPE_SPLINEIK:
2309                         {
2310                                 bSplineIKConstraint *data= con->data;
2311
2312                                 data->points= newdataadr(fd, data->points);
2313                         }
2314                                 break;
2315                         case CONSTRAINT_TYPE_KINEMATIC:
2316                         {
2317                                 con->lin_error = 0.f;
2318                                 con->rot_error = 0.f;
2319                         }
2320                         case CONSTRAINT_TYPE_CHILDOF:
2321                         {
2322                                 /* XXX version patch, in older code this flag wasn't always set, and is inherent to type */
2323                                 if(con->ownspace == CONSTRAINT_SPACE_POSE)
2324                                         con->flag |= CONSTRAINT_SPACEONCE;
2325                         }
2326                                 break;
2327                 }
2328         }
2329 }
2330
2331 static void lib_link_pose(FileData *fd, Object *ob, bPose *pose)
2332 {
2333         bPoseChannel *pchan;
2334         bArmature *arm= ob->data;
2335         int rebuild;
2336
2337         if (!pose || !arm)
2338                 return;
2339
2340
2341         /* always rebuild to match proxy or lib changes */
2342         rebuild= ob->proxy || (ob->id.lib==NULL && arm->id.lib);
2343
2344         if(ob->proxy) {
2345                 /* sync proxy layer */
2346                 if(pose->proxy_layer)
2347                         arm->layer = pose->proxy_layer;
2348
2349                 /* sync proxy active bone */
2350                 if(pose->proxy_act_bone[0]) {
2351                         Bone *bone = get_named_bone(arm, pose->proxy_act_bone);
2352                         if (bone)
2353                                 arm->act_bone = bone;
2354                 }
2355         }
2356
2357         for (pchan = pose->chanbase.first; pchan; pchan=pchan->next) {
2358                 lib_link_constraints(fd, (ID *)ob, &pchan->constraints);
2359
2360                 /* hurms... loop in a loop, but yah... later... (ton) */
2361                 pchan->bone= get_named_bone(arm, pchan->name);
2362
2363                 pchan->custom= newlibadr_us(fd, arm->id.lib, pchan->custom);
2364                 if(pchan->bone==NULL)
2365                         rebuild= 1;
2366                 else if(ob->id.lib==NULL && arm->id.lib) {
2367                         /* local pose selection copied to armature, bit hackish */
2368                         pchan->bone->flag &= ~BONE_SELECTED;
2369                         pchan->bone->flag |= pchan->selectflag;
2370                 }
2371         }
2372
2373         if(rebuild) {
2374                 ob->recalc= OB_RECALC_OB|OB_RECALC_DATA|OB_RECALC_TIME;
2375                 pose->flag |= POSE_RECALC;
2376         }
2377 }
2378
2379 static void lib_link_armature(FileData *fd, Main *main)
2380 {
2381         bArmature *arm;
2382
2383         arm= main->armature.first;
2384
2385         while(arm) {
2386                 if(arm->id.flag & LIB_NEEDLINK) {
2387                         if (arm->adt) lib_link_animdata(fd, &arm->id, arm->adt);
2388                         arm->id.flag -= LIB_NEEDLINK;
2389                 }
2390                 arm= arm->id.next;
2391         }
2392 }
2393
2394 static void direct_link_bones(FileData *fd, Bone* bone)
2395 {
2396         Bone    *child;
2397
2398         bone->parent= newdataadr(fd, bone->parent);
2399         bone->prop= newdataadr(fd, bone->prop);
2400         if(bone->prop)
2401                 IDP_DirectLinkProperty(bone->prop, (fd->flags & FD_FLAGS_SWITCH_ENDIAN), fd);
2402
2403         bone->flag &= ~BONE_DRAW_ACTIVE;
2404
2405         link_list(fd, &bone->childbase);
2406
2407         for(child=bone->childbase.first; child; child=child->next)
2408                 direct_link_bones(fd, child);
2409 }
2410
2411 static void direct_link_armature(FileData *fd, bArmature *arm)
2412 {
2413         Bone    *bone;
2414
2415         link_list(fd, &arm->bonebase);
2416         arm->edbo= NULL;
2417         arm->sketch = NULL;
2418
2419         arm->adt= newdataadr(fd, arm->adt);
2420         direct_link_animdata(fd, arm->adt);
2421
2422         bone=arm->bonebase.first;
2423         while (bone) {
2424                 direct_link_bones(fd, bone);
2425                 bone=bone->next;
2426         }
2427
2428         arm->act_bone= newdataadr(fd, arm->act_bone);
2429         arm->act_edbone= NULL;
2430 }
2431
2432 /* ************ READ CAMERA ***************** */
2433
2434 static void lib_link_camera(FileData *fd, Main *main)
2435 {
2436         Camera *ca;
2437
2438         ca= main->camera.first;
2439         while(ca) {
2440                 if(ca->id.flag & LIB_NEEDLINK) {
2441                         if (ca->adt) lib_link_animdata(fd, &ca->id, ca->adt);
2442
2443                         ca->ipo= newlibadr_us(fd, ca->id.lib, ca->ipo); // XXX depreceated - old animation system
2444
2445                         ca->dof_ob= newlibadr_us(fd, ca->id.lib, ca->dof_ob);
2446
2447                         ca->id.flag -= LIB_NEEDLINK;
2448                 }
2449                 ca= ca->id.next;
2450         }
2451 }
2452
2453 static void direct_link_camera(FileData *fd, Camera *ca)
2454 {
2455         ca->adt= newdataadr(fd, ca->adt);
2456         direct_link_animdata(fd, ca->adt);
2457 }
2458
2459
2460 /* ************ READ LAMP ***************** */
2461
2462 static void lib_link_lamp(FileData *fd, Main *main)
2463 {
2464         Lamp *la;
2465         MTex *mtex;
2466         int a;
2467
2468         la= main->lamp.first;
2469         while(la) {
2470                 if(la->id.flag & LIB_NEEDLINK) {
2471                         if (la->adt) lib_link_animdata(fd, &la->id, la->adt);
2472
2473                         for(a=0; a<MAX_MTEX; a++) {
2474                                 mtex= la->mtex[a];
2475                                 if(mtex) {
2476                                         mtex->tex= newlibadr_us(fd, la->id.lib, mtex->tex);
2477                                         mtex->object= newlibadr(fd, la->id.lib, mtex->object);
2478                                 }
2479                         }
2480
2481                         la->ipo= newlibadr_us(fd, la->id.lib, la->ipo); // XXX depreceated - old animation system
2482
2483                         la->id.flag -= LIB_NEEDLINK;
2484                 }
2485                 la= la->id.next;
2486         }
2487 }
2488
2489 static void direct_link_lamp(FileData *fd, Lamp *la)
2490 {
2491         int a;
2492
2493         la->adt= newdataadr(fd, la->adt);
2494         direct_link_animdata(fd, la->adt);
2495
2496         for(a=0; a<MAX_MTEX; a++) {
2497                 la->mtex[a]= newdataadr(fd, la->mtex[a]);
2498         }
2499
2500         la->curfalloff= newdataadr(fd, la->curfalloff);
2501         if(la->curfalloff)
2502                 direct_link_curvemapping(fd, la->curfalloff);
2503
2504         la->preview = direct_link_preview_image(fd, la->preview);
2505 }
2506
2507 /* ************ READ keys ***************** */
2508
2509 static void lib_link_key(FileData *fd, Main *main)
2510 {
2511         Key *key;
2512
2513         key= main->key.first;
2514         while(key) {
2515                 /*check if we need to generate unique ids for the shapekeys*/
2516                 if (!key->uidgen) {
2517                         KeyBlock *block;
2518
2519                         key->uidgen = 1;
2520                         for (block=key->block.first; block; block=block->next) {
2521                                 block->uid = key->uidgen++;
2522                         }
2523                 }
2524
2525                 if(key->id.flag & LIB_NEEDLINK) {
2526                         if(key->adt) lib_link_animdata(fd, &key->id, key->adt);
2527
2528                         key->ipo= newlibadr_us(fd, key->id.lib, key->ipo); // XXX depreceated - old animation system
2529                         key->from= newlibadr(fd, key->id.lib, key->from);
2530
2531                         key->id.flag -= LIB_NEEDLINK;
2532                 }
2533                 key= key->id.next;
2534         }
2535 }
2536
2537 static void switch_endian_keyblock(Key *key, KeyBlock *kb)
2538 {
2539         int elemsize, a, b;
2540         char *data, *poin, *cp;
2541
2542         elemsize= key->elemsize;
2543         data= kb->data;
2544
2545         for(a=0; a<kb->totelem; a++) {
2546
2547                 cp= key->elemstr;
2548                 poin= data;
2549
2550                 while( cp[0] ) {        /* cp[0]==amount */
2551
2552                         switch(cp[1]) {         /* cp[1]= type */
2553                         case IPO_FLOAT:
2554                         case IPO_BPOINT:
2555                         case IPO_BEZTRIPLE:
2556                                 b= cp[0];
2557                                 while(b--) {
2558                                         SWITCH_INT((*poin));
2559                                         poin+= 4;
2560                                 }
2561                                 break;
2562                         }
2563
2564                         cp+= 2;
2565
2566                 }
2567                 data+= elemsize;
2568         }
2569 }
2570
2571 static void direct_link_key(FileData *fd, Key *key)
2572 {
2573         KeyBlock *kb;
2574
2575         link_list(fd, &(key->block));
2576
2577         key->adt= newdataadr(fd, key->adt);
2578         direct_link_animdata(fd, key->adt);
2579
2580         key->refkey= newdataadr(fd, key->refkey);
2581
2582         kb= key->block.first;
2583         while(kb) {
2584
2585                 kb->data= newdataadr(fd, kb->data);
2586
2587                 if(fd->flags & FD_FLAGS_SWITCH_ENDIAN)
2588                         switch_endian_keyblock(key, kb);
2589
2590                 kb= kb->next;
2591         }
2592 }
2593
2594 /* ************ READ mball ***************** */
2595
2596 static void lib_link_mball(FileData *fd, Main *main)
2597 {
2598         MetaBall *mb;
2599         int a;
2600
2601         mb= main->mball.first;
2602         while(mb) {
2603                 if(mb->id.flag & LIB_NEEDLINK) {
2604                         if (mb->adt) lib_link_animdata(fd, &mb->id, mb->adt);
2605
2606                         for(a=0; a<mb->totcol; a++) mb->mat[a]= newlibadr_us(fd, mb->id.lib, mb->mat[a]);
2607
2608                         mb->ipo= newlibadr_us(fd, mb->id.lib, mb->ipo); // XXX depreceated - old animation system
2609
2610                         mb->id.flag -= LIB_NEEDLINK;
2611                 }
2612                 mb= mb->id.next;
2613         }
2614 }
2615
2616 static void direct_link_mball(FileData *fd, MetaBall *mb)
2617 {
2618         mb->adt= newdataadr(fd, mb->adt);
2619         direct_link_animdata(fd, mb->adt);
2620
2621         mb->mat= newdataadr(fd, mb->mat);
2622         test_pointer_array(fd, (void **)&mb->mat);
2623
2624         link_list(fd, &(mb->elems));
2625
2626         mb->disp.first= mb->disp.last= NULL;
2627         mb->editelems= NULL;
2628         mb->bb= NULL;
2629 /*      mb->edit_elems.first= mb->edit_elems.last= NULL;*/
2630         mb->lastelem= NULL;
2631 }
2632
2633 /* ************ READ WORLD ***************** */
2634
2635 static void lib_link_world(FileData *fd, Main *main)
2636 {
2637         World *wrld;
2638         MTex *mtex;
2639         int a;
2640
2641         wrld= main->world.first;
2642         while(wrld) {
2643                 if(wrld->id.flag & LIB_NEEDLINK) {
2644                         if (wrld->adt) lib_link_animdata(fd, &wrld->id, wrld->adt);
2645
2646                         wrld->ipo= newlibadr_us(fd, wrld->id.lib, wrld->ipo); // XXX depreceated - old animation system
2647
2648                         for(a=0; a<MAX_MTEX; a++) {
2649                                 mtex= wrld->mtex[a];
2650                                 if(mtex) {
2651                                         mtex->tex= newlibadr_us(fd, wrld->id.lib, mtex->tex);
2652                                         mtex->object= newlibadr(fd, wrld->id.lib, mtex->object);
2653                                 }
2654                         }
2655
2656                         wrld->id.flag -= LIB_NEEDLINK;
2657                 }
2658                 wrld= wrld->id.next;
2659         }
2660 }
2661
2662 static void direct_link_world(FileData *fd, World *wrld)
2663 {
2664         int a;
2665
2666         wrld->adt= newdataadr(fd, wrld->adt);
2667         direct_link_animdata(fd, wrld->adt);
2668
2669         for(a=0; a<MAX_MTEX; a++) {
2670                 wrld->mtex[a]= newdataadr(fd, wrld->mtex[a]);
2671         }
2672         wrld->preview = direct_link_preview_image(fd, wrld->preview);
2673 }
2674
2675
2676 /* ************ READ VFONT ***************** */
2677
2678 static void lib_link_vfont(FileData *UNUSED(fd), Main *main)
2679 {
2680         VFont *vf;
2681
2682         vf= main->vfont.first;
2683         while(vf) {
2684                 if(vf->id.flag & LIB_NEEDLINK) {
2685                         vf->id.flag -= LIB_NEEDLINK;
2686                 }
2687                 vf= vf->id.next;
2688         }
2689 }
2690
2691 static void direct_link_vfont(FileData *fd, VFont *vf)
2692 {
2693         vf->data= NULL;
2694         vf->packedfile= direct_link_packedfile(fd, vf->packedfile);
2695 }
2696
2697 /* ************ READ TEXT ****************** */
2698
2699 static void lib_link_text(FileData *UNUSED(fd), Main *main)
2700 {
2701         Text *text;
2702
2703         text= main->text.first;
2704         while(text) {
2705                 if(text->id.flag & LIB_NEEDLINK) {
2706                         text->id.flag -= LIB_NEEDLINK;
2707                 }
2708                 text= text->id.next;
2709         }
2710 }
2711
2712 static void direct_link_text(FileData *fd, Text *text)
2713 {
2714         TextLine *ln;
2715
2716         text->name= newdataadr(fd, text->name);
2717
2718         text->undo_pos= -1;
2719         text->undo_len= TXT_INIT_UNDO;
2720         text->undo_buf= MEM_mallocN(text->undo_len, "undo buf");
2721
2722         text->compiled= NULL;
2723
2724 /*
2725         if(text->flags & TXT_ISEXT) {
2726                 reopen_text(text);
2727         } else {
2728 */
2729
2730         link_list(fd, &text->lines);
2731         link_list(fd, &text->markers);
2732
2733         text->curl= newdataadr(fd, text->curl);
2734         text->sell= newdataadr(fd, text->sell);
2735
2736         ln= text->lines.first;
2737         while(ln) {
2738                 ln->line= newdataadr(fd, ln->line);
2739                 ln->format= NULL;
2740
2741                 if (ln->len != (int) strlen(ln->line)) {
2742                         printf("Error loading text, line lengths differ\n");
2743                         ln->len = strlen(ln->line);
2744                 }
2745
2746                 ln= ln->next;
2747         }
2748
2749         text->flags = (text->flags) & ~TXT_ISEXT;
2750
2751         text->id.us= 1;
2752 }
2753
2754 /* ************ READ IMAGE ***************** */
2755
2756 static void lib_link_image(FileData *fd, Main *main)
2757 {
2758         Image *ima;
2759
2760         ima= main->image.first;
2761         while (ima) {
2762                 if(ima->id.flag & LIB_NEEDLINK) {
2763                         if (ima->id.properties) IDP_LibLinkProperty(ima->id.properties, (fd->flags & FD_FLAGS_SWITCH_ENDIAN), fd);
2764
2765                         ima->id.flag -= LIB_NEEDLINK;
2766                 }
2767                 ima= ima->id.next;
2768         }
2769 }
2770
2771 static void link_ibuf_list(FileData *fd, ListBase *lb)
2772 {
2773         Link *ln, *prev;
2774
2775         if(lb->first==NULL) return;
2776
2777         lb->first= newimaadr(fd, lb->first);
2778         ln= lb->first;
2779         prev= NULL;
2780         while(ln) {
2781                 ln->next= newimaadr(fd, ln->next);
2782                 ln->prev= prev;
2783                 prev= ln;
2784                 ln= ln->next;
2785         }
2786         lb->last= prev;
2787 }
2788
2789 static void direct_link_image(FileData *fd, Image *ima)
2790 {
2791         /* for undo system, pointers could be restored */
2792         if(fd->imamap)
2793                 link_ibuf_list(fd, &ima->ibufs);
2794         else
2795                 ima->ibufs.first= ima->ibufs.last= NULL;
2796
2797         /* if not restored, we keep the binded opengl index */
2798         if(ima->ibufs.first==NULL) {
2799                 ima->bindcode= 0;
2800                 ima->gputexture= NULL;
2801         }
2802
2803         ima->anim= NULL;
2804         ima->rr= NULL;
2805         ima->repbind= NULL;
2806
2807         /* undo system, try to restore render buffers */
2808         if(fd->imamap) {
2809                 int a;
2810
2811                 for(a=0; a<IMA_MAX_RENDER_SLOT; a++)
2812                         ima->renders[a]= newimaadr(fd, ima->renders[a]);
2813         }
2814         else {
2815                 memset(ima->renders, 0, sizeof(ima->renders));
2816                 ima->last_render_slot= ima->render_slot;
2817         }
2818
2819         ima->packedfile = direct_link_packedfile(fd, ima->packedfile);
2820         ima->preview = direct_link_preview_image(fd, ima->preview);
2821         ima->ok= 1;
2822 }
2823
2824
2825 /* ************ READ CURVE ***************** */
2826
2827 static void lib_link_curve(FileData *fd, Main *main)
2828 {
2829         Curve *cu;
2830         int a;
2831
2832         cu= main->curve.first;
2833         while(cu) {
2834                 if(cu->id.flag & LIB_NEEDLINK) {
2835                         if(cu->adt) lib_link_animdata(fd, &cu->id, cu->adt);
2836
2837                         for(a=0; a<cu->totcol; a++) cu->mat[a]= newlibadr_us(fd, cu->id.lib, cu->mat[a]);
2838
2839                         cu->bevobj= newlibadr(fd, cu->id.lib, cu->bevobj);
2840                         cu->taperobj= newlibadr(fd, cu->id.lib, cu->taperobj);
2841                         cu->textoncurve= newlibadr(fd, cu->id.lib, cu->textoncurve);
2842                         cu->vfont= newlibadr_us(fd, cu->id.lib, cu->vfont);
2843                         cu->vfontb= newlibadr_us(fd, cu->id.lib, cu->vfontb);
2844                         cu->vfonti= newlibadr_us(fd, cu->id.lib, cu->vfonti);
2845                         cu->vfontbi= newlibadr_us(fd, cu->id.lib, cu->vfontbi);
2846
2847                         cu->ipo= newlibadr_us(fd, cu->id.lib, cu->ipo); // XXX depreceated - old animation system
2848                         cu->key= newlibadr_us(fd, cu->id.lib, cu->key);
2849
2850                         cu->id.flag -= LIB_NEEDLINK;
2851                 }
2852                 cu= cu->id.next;
2853         }
2854 }
2855
2856
2857 static void switch_endian_knots(Nurb *nu)
2858 {
2859         int len;
2860
2861         if(nu->knotsu) {
2862                 len= KNOTSU(nu);
2863                 while(len--) {
2864                         SWITCH_INT(nu->knotsu[len]);
2865                 }
2866         }
2867         if(nu->knotsv) {
2868                 len= KNOTSV(nu);
2869                 while(len--) {
2870                         SWITCH_INT(nu->knotsv[len]);
2871                 }
2872         }
2873 }
2874
2875 static void direct_link_curve(FileData *fd, Curve *cu)
2876 {
2877         Nurb *nu;
2878         TextBox *tb;
2879
2880         cu->adt= newdataadr(fd, cu->adt);
2881         direct_link_animdata(fd, cu->adt);
2882
2883         cu->mat= newdataadr(fd, cu->mat);
2884         test_pointer_array(fd, (void **)&cu->mat);
2885         cu->str= newdataadr(fd, cu->str);
2886         cu->strinfo= newdataadr(fd, cu->strinfo);
2887         cu->tb= newdataadr(fd, cu->tb);
2888
2889         if(cu->vfont == NULL) link_list(fd, &(cu->nurb));
2890         else {
2891                 cu->nurb.first=cu->nurb.last= NULL;
2892
2893                 tb= MEM_callocN(MAXTEXTBOX*sizeof(TextBox), "TextBoxread");
2894                 if (cu->tb) {
2895                         memcpy(tb, cu->tb, cu->totbox*sizeof(TextBox));
2896                         MEM_freeN(cu->tb);
2897                         cu->tb= tb;
2898                 } else {
2899                         cu->totbox = 1;
2900                         cu->actbox = 1;
2901                         cu->tb = tb;
2902                         cu->tb[0].w = cu->linewidth;
2903                 }
2904                 if (cu->wordspace == 0.0f) cu->wordspace = 1.0f;
2905         }
2906
2907         cu->bev.first=cu->bev.last= NULL;
2908         cu->disp.first=cu->disp.last= NULL;
2909         cu->editnurb= NULL;
2910         cu->lastsel= NULL;
2911         cu->path= NULL;
2912         cu->editfont= NULL;
2913
2914         nu= cu->nurb.first;
2915         while(nu) {
2916                 nu->bezt= newdataadr(fd, nu->bezt);
2917                 nu->bp= newdataadr(fd, nu->bp);
2918                 nu->knotsu= newdataadr(fd, nu->knotsu);
2919                 nu->knotsv= newdataadr(fd, nu->knotsv);
2920                 if (cu->vfont == NULL) nu->charidx= nu->mat_nr;
2921
2922                 if(fd->flags & FD_FLAGS_SWITCH_ENDIAN) {
2923                         switch_endian_knots(nu);
2924                 }
2925
2926                 nu= nu->next;
2927         }
2928         cu->bb= NULL;
2929 }
2930
2931 /* ************ READ TEX ***************** */
2932
2933 static void lib_link_texture(FileData *fd, Main *main)
2934 {
2935         Tex *tex;
2936
2937         tex= main->tex.first;
2938         while(tex) {
2939                 if(tex->id.flag & LIB_NEEDLINK) {
2940                         if(tex->adt) lib_link_animdata(fd, &tex->id, tex->adt);
2941
2942                         tex->ima= newlibadr_us(fd, tex->id.lib, tex->ima);
2943                         tex->ipo= newlibadr_us(fd, tex->id.lib, tex->ipo);
2944                         if(tex->env) tex->env->object= newlibadr(fd, tex->id.lib, tex->env->object);
2945                         if(tex->pd)
2946                                 tex->pd->object= newlibadr(fd, tex->id.lib, tex->pd->object);
2947                         if(tex->vd) tex->vd->object= newlibadr(fd, tex->id.lib, tex->vd->object);
2948
2949                         if(tex->nodetree)
2950                                 lib_link_ntree(fd, &tex->id, tex->nodetree);
2951
2952                         tex->id.flag -= LIB_NEEDLINK;
2953                 }
2954                 tex= tex->id.next;
2955         }
2956 }
2957
2958 static void direct_link_texture(FileData *fd, Tex *tex)
2959 {
2960         tex->adt= newdataadr(fd, tex->adt);
2961         direct_link_animdata(fd, tex->adt);
2962
2963         tex->plugin= newdataadr(fd, tex->plugin);
2964         if(tex->plugin) {
2965                 tex->plugin->handle= NULL;
2966                 open_plugin_tex(tex->plugin);
2967                 /* initialize data for this instance, if an initialization
2968                  * function exists.
2969                  */
2970                 if (tex->plugin->instance_init)
2971                         tex->plugin->instance_init((void *) tex->plugin->data);
2972         }
2973         tex->coba= newdataadr(fd, tex->coba);
2974         tex->env= newdataadr(fd, tex->env);
2975         if(tex->env) {
2976                 tex->env->ima= NULL;
2977                 memset(tex->env->cube, 0, 6*sizeof(void *));
2978                 tex->env->ok= 0;
2979         }
2980         tex->pd= newdataadr(fd, tex->pd);
2981         if(tex->pd) {
2982                 tex->pd->point_tree = NULL;
2983                 tex->pd->coba= newdataadr(fd, tex->pd->coba);
2984                 tex->pd->falloff_curve= newdataadr(fd, tex->pd->falloff_curve);
2985                 if(tex->pd->falloff_curve) {
2986                         direct_link_curvemapping(fd, tex->pd->falloff_curve);
2987                 }
2988         }
2989
2990         tex->vd= newdataadr(fd, tex->vd);
2991         if(tex->vd) {
2992                 tex->vd->dataset = NULL;
2993                 tex->vd->ok = 0;
2994         }
2995
2996         tex->nodetree= newdataadr(fd, tex->nodetree);
2997         if(tex->nodetree)
2998                 direct_link_nodetree(fd, tex->nodetree);
2999
3000         tex->preview = direct_link_preview_image(fd, tex->preview);
3001
3002         tex->iuser.ok= 1;
3003 }
3004
3005
3006
3007 /* ************ READ MATERIAL ***************** */
3008
3009 static void lib_link_material(FileData *fd, Main *main)
3010 {
3011         Material *ma;
3012         MTex *mtex;
3013         int a;
3014
3015         ma= main->mat.first;
3016         while(ma) {
3017                 if(ma->id.flag & LIB_NEEDLINK) {
3018                         if(ma->adt) lib_link_animdata(fd, &ma->id, ma->adt);
3019
3020                         /*Link ID Properties -- and copy this comment EXACTLY for easy finding
3021                         of library blocks that implement this.*/
3022                         if (ma->id.properties) IDP_LibLinkProperty(ma->id.properties, (fd->flags & FD_FLAGS_SWITCH_ENDIAN), fd);
3023
3024                         ma->ipo= newlibadr_us(fd, ma->id.lib, ma->ipo);
3025                         ma->group= newlibadr_us(fd, ma->id.lib, ma->group);
3026
3027                         for(a=0; a<MAX_MTEX; a++) {
3028                                 mtex= ma->mtex[a];
3029                                 if(mtex) {
3030                                         mtex->tex= newlibadr_us(fd, ma->id.lib, mtex->tex);
3031                                         mtex->object= newlibadr(fd, ma->id.lib, mtex->object);
3032                                 }
3033                         }
3034
3035                         if(ma->nodetree)
3036                                 lib_link_ntree(fd, &ma->id, ma->nodetree);
3037
3038                         ma->id.flag -= LIB_NEEDLINK;
3039                 }
3040                 ma= ma->id.next;
3041         }
3042 }
3043
3044 static void direct_link_material(FileData *fd, Material *ma)
3045 {
3046         int a;
3047
3048         ma->adt= newdataadr(fd, ma->adt);
3049         direct_link_animdata(fd, ma->adt);
3050
3051         for(a=0; a<MAX_MTEX; a++) {
3052                 ma->mtex[a]= newdataadr(fd, ma->mtex[a]);
3053         }
3054
3055         ma->ramp_col= newdataadr(fd, ma->ramp_col);
3056         ma->ramp_spec= newdataadr(fd, ma->ramp_spec);
3057
3058         ma->nodetree= newdataadr(fd, ma->nodetree);
3059         if(ma->nodetree)
3060                 direct_link_nodetree(fd, ma->nodetree);
3061
3062         ma->preview = direct_link_preview_image(fd, ma->preview);
3063         ma->gpumaterial.first = ma->gpumaterial.last = NULL;
3064 }
3065
3066 /* ************ READ PARTICLE SETTINGS ***************** */
3067 /* update this also to writefile.c */
3068 static const char *ptcache_data_struct[] = {
3069         "", // BPHYS_DATA_INDEX
3070         "", // BPHYS_DATA_LOCATION
3071         "", // BPHYS_DATA_VELOCITY
3072         "", // BPHYS_DATA_ROTATION
3073         "", // BPHYS_DATA_AVELOCITY / BPHYS_DATA_XCONST */
3074         "", // BPHYS_DATA_SIZE:
3075         "", // BPHYS_DATA_TIMES:
3076         "BoidData" // case BPHYS_DATA_BOIDS:
3077 };
3078 static void direct_link_pointcache(FileData *fd, PointCache *cache)
3079 {
3080         if((cache->flag & PTCACHE_DISK_CACHE)==0) {
3081                 PTCacheMem *pm;
3082                 PTCacheExtra *extra;
3083                 int i;
3084
3085                 link_list(fd, &cache->mem_cache);
3086
3087                 pm = cache->mem_cache.first;
3088
3089                 for(; pm; pm=pm->next) {
3090                         for(i=0; i<BPHYS_TOT_DATA; i++) {
3091                                 pm->data[i] = newdataadr(fd, pm->data[i]);
3092
3093                                 /* the cache saves non-struct data without DNA */
3094                                 if(pm->data[i] && strcmp(ptcache_data_struct[i], "")==0 && (fd->flags & FD_FLAGS_SWITCH_ENDIAN)) {
3095                                         int j, tot= (BKE_ptcache_data_size (i) * pm->totpoint)/4; /* data_size returns bytes */
3096                                         int *poin= pm->data[i];
3097
3098                                         for(j= 0; j<tot; j++)
3099                                                 SWITCH_INT(poin[j]);
3100                                 }
3101                         }
3102
3103                         link_list(fd, &pm->extradata);
3104
3105                         for(extra=pm->extradata.first; extra; extra=extra->next)
3106                                 extra->data = newdataadr(fd, extra->data);
3107                 }
3108         }
3109         else
3110                 cache->mem_cache.first = cache->mem_cache.last = NULL;
3111
3112         cache->flag &= ~PTCACHE_SIMULATION_VALID;
3113         cache->simframe= 0;
3114         cache->edit= NULL;
3115         cache->free_edit= NULL;
3116         cache->cached_frames= NULL;
3117 }
3118
3119 static void direct_link_pointcache_list(FileData *fd, ListBase *ptcaches, PointCache **ocache, int force_disk)
3120 {
3121         if(ptcaches->first) {
3122                 PointCache *cache= NULL;
3123                 link_list(fd, ptcaches);
3124                 for(cache=ptcaches->first; cache; cache=cache->next) {
3125                         direct_link_pointcache(fd, cache);
3126                         if(force_disk) {
3127                                 cache->flag |= PTCACHE_DISK_CACHE;
3128                                 cache->step = 1;
3129                         }
3130                 }
3131
3132                 *ocache = newdataadr(fd, *ocache);
3133         }
3134         else if(*ocache) {
3135                 /* old "single" caches need to be linked too */
3136                 *ocache = newdataadr(fd, *ocache);
3137                 direct_link_pointcache(fd, *ocache);
3138                 if(force_disk) {
3139                         (*ocache)->flag |= PTCACHE_DISK_CACHE;
3140                         (*ocache)->step = 1;
3141                 }
3142
3143                 ptcaches->first = ptcaches->last = *ocache;
3144         }
3145 }
3146
3147 static void lib_link_partdeflect(FileData *fd, ID *id, PartDeflect *pd)
3148 {
3149         if(pd && pd->tex)
3150                 pd->tex=newlibadr_us(fd, id->lib, pd->tex);
3151 }
3152
3153 static void lib_link_particlesettings(FileData *fd, Main *main)
3154 {
3155         ParticleSettings *part;
3156         ParticleDupliWeight *dw;
3157         MTex *mtex;
3158         int a;
3159
3160         part= main->particle.first;
3161         while(part) {
3162                 if(part->id.flag & LIB_NEEDLINK) {
3163                         if (part->adt) lib_link_animdata(fd, &part->id, part->adt);
3164                         part->ipo= newlibadr_us(fd, part->id.lib, part->ipo); // XXX depreceated - old animation system
3165
3166                         part->dup_ob = newlibadr(fd, part->id.lib, part->dup_ob);
3167                         part->dup_group = newlibadr(fd, part->id.lib, part->dup_group);
3168                         part->eff_group = newlibadr(fd, part->id.lib, part->eff_group);
3169                         part->bb_ob = newlibadr(fd, part->id.lib, part->bb_ob);
3170
3171                         lib_link_partdeflect(fd, &part->id, part->pd);
3172                         lib_link_partdeflect(fd, &part->id, part->pd2);
3173
3174                         if(part->effector_weights)
3175                                 part->effector_weights->group = newlibadr(fd, part->id.lib, part->effector_weights->group);
3176
3177                         if(part->dupliweights.first && part->dup_group) {
3178                                 int index_ok = 0;
3179                                 /* check for old files without indices (all indexes 0) */
3180                                 dw = part->dupliweights.first;
3181                                 if(part->dupliweights.first == part->dupliweights.last) {
3182                                         /* special case for only one object in the group */
3183                                         index_ok = 1;
3184                                 }
3185                                 else {
3186                                         for(; dw; dw=dw->next) {
3187                                                 if(dw->index > 0) {
3188                                                         index_ok = 1;
3189                                                         break;
3190                                                 }
3191                                         }
3192                                 }
3193
3194                                 if(index_ok) {
3195                                         /* if we have indexes, let's use them */
3196                                         dw = part->dupliweights.first;
31