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writefile.c

/* writefile.c
 *
 * .blend file writing
 *
 * $Id: writefile.c,v 1.36 2004/12/16 14:40:25 ton Exp $
 *
 * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version. The Blender
 * Foundation also sells licenses for use in proprietary software under
 * the Blender License.  See http://www.blender.org/BL/ for information
 * about this.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL/BL DUAL LICENSE BLOCK *****
 */

/*
FILEFORMAT: IFF-style structure  (but not IFF compatible!)

start file:
      BLENDER_V100      12 bytes  (versie 1.00)
                              V = big endian, v = little endian
                              _ = 4 byte pointer, - = 8 byte pointer

datablocks:       also see struct BHead
      <bh.code>               4 chars
      <bh.len>                int,  len data after BHead
      <bh.old>                void,  old pointer
      <bh.SDNAnr>             int
      <bh.nr>                       int, in case of array: amount of structs
      data
      ...
      ...

Almost all data in Blender are structures. Each struct saved
gets a BHead header.  With BHead the struct can be linked again
and compared with StructDNA .

WRITE

Preferred writing order: (not really a must, but why would you do it random?)
Any case: direct data is ALWAYS after the lib block

(Local file data)
- for each LibBlock
      - write LibBlock
      - write associated direct data
(External file data)
- per library
      - write library block
      - per LibBlock
            - write the ID of LibBlock
- write FileGlobal (some global vars)
- write SDNA
- write USER if filename is ~/.B.blend
*/

/* for version 2.2+
Important to know is that 'streaming' has been added to files, for Blender Publisher
*/


#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#ifndef WIN32
#include <unistd.h>
#else
#include "winsock2.h"
#include "BLI_winstuff.h"
#include <io.h>
#include <process.h> // for getpid
#endif

#include <math.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>

#include "nla.h" //  __NLA is defined

#include "DNA_packedFile_types.h"
#include "DNA_sdna_types.h"
#include "DNA_property_types.h"
#include "DNA_sensor_types.h"
#include "DNA_controller_types.h"
#include "DNA_actuator_types.h"
#include "DNA_effect_types.h"
#include "DNA_object_types.h"
#include "DNA_userdef_types.h"
#include "DNA_vfont_types.h"
#include "DNA_ipo_types.h"
#include "DNA_curve_types.h"
#include "DNA_camera_types.h"
#include "DNA_meta_types.h"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_material_types.h"
#include "DNA_lattice_types.h"
#include "DNA_armature_types.h"
#include "DNA_sequence_types.h"
#include "DNA_ika_types.h"
#include "DNA_group_types.h"
#include "DNA_oops_types.h"
#include "DNA_space_types.h"
#include "DNA_screen_types.h"
#include "DNA_view3d_types.h"
#include "DNA_lamp_types.h"
#include "DNA_fileglobal_types.h"
#include "DNA_sound_types.h"
#include "DNA_texture_types.h"
#include "DNA_text_types.h"
#include "DNA_image_types.h"
#include "DNA_key_types.h"
#include "DNA_scene_types.h"
#include "DNA_constraint_types.h"
#include "DNA_listBase.h" /* for Listbase, the type of samples, ...*/
#include "DNA_action_types.h"
#include "DNA_nla_types.h"

#include "MEM_guardedalloc.h" // MEM_freeN
#include "BLI_blenlib.h"
#include "BLI_linklist.h"

#include "BKE_action.h"
#include "BKE_utildefines.h" // for KNOTSU KNOTSV WHILE_SEQ END_SEQ defines
#include "BKE_bad_level_calls.h" // build_seqar (from WHILE_SEQ) free_oops error
#include "BKE_constraint.h"
#include "BKE_main.h" // G.main
#include "BKE_global.h" // for G
#include "BKE_screen.h" // for waitcursor
#include "BKE_packedFile.h" // for packAll
#include "BKE_library.h" // for  set_listbasepointers
#include "BKE_sound.h" /* ... and for samples */

#include "GEN_messaging.h"

#include "BLO_writefile.h"
#include "BLO_readfile.h"
#include "BLO_undofile.h"

#include "readfile.h"
#include "genfile.h"


/* ********* my write, buffered writing with minimum 50k chunks ************ */

typedef struct {
      struct SDNA *sdna;

      int file;
      unsigned char *buf;
      MemFile *compare, *current;
      
      int tot, count, error, memsize;
} WriteData;

static WriteData *writedata_new(int file)
{
      extern char DNAstr[];   /* DNA.c */
      extern int DNAlen;

      WriteData *wd= MEM_callocN(sizeof(*wd), "writedata");

            /* XXX, see note about this in readfile.c, remove
             * once we have an xp lock - zr
             */
      wd->sdna= dna_sdna_from_data(DNAstr, DNAlen, 0);

      wd->file= file;

      wd->buf= MEM_mallocN(100000, "wd->buf");

      return wd;
}

static void writedata_do_write(WriteData *wd, void *mem, int memlen)
{
      if (wd->error) return;

      /* memory based save */
      if(wd->current) {
            add_memfilechunk(NULL, wd->current, mem, memlen);
      }
      else {
            if (write(wd->file, mem, memlen) != memlen)
                  wd->error= 1;
            
      }
}

static void writedata_free(WriteData *wd)
{
      dna_freestructDNA(wd->sdna);

      MEM_freeN(wd->buf);
      MEM_freeN(wd);
}

/***/

int mywfile;

/**
 * Low level WRITE(2) wrapper that buffers data
 * @param adr Pointer to new chunk of data
 * @param len Length of new chunk of data
 * @warning Talks to other functions with global parameters
 */
 
#define MYWRITE_FLUSH   NULL

static void mywrite( WriteData *wd, void *adr, int len)
{
      if (wd->error) return;

      if(adr==MYWRITE_FLUSH) {
            if(wd->count) {
                  writedata_do_write(wd, wd->buf, wd->count);
                  wd->count= 0;
            }
            return;
      }

      wd->tot+= len;
      
      if(len>50000) {
            if(wd->count) {
                  writedata_do_write(wd, wd->buf, wd->count);
                  wd->count= 0;
            }
            writedata_do_write(wd, adr, len);
            return;
      }
      if(len+wd->count>99999) {
            writedata_do_write(wd, wd->buf, wd->count);
            wd->count= 0;
      }
      memcpy(&wd->buf[wd->count], adr, len);
      wd->count+= len;

}

/**
 * BeGiN initializer for mywrite
 * @param file File descriptor
 * @param write_flags Write parameters
 * @warning Talks to other functions with global parameters
 */
static WriteData *bgnwrite(int file, MemFile *compare, MemFile *current, int write_flags)
{
      WriteData *wd= writedata_new(file);

      wd->compare= compare;
      wd->current= current;
      /* this inits comparing */
      add_memfilechunk(compare, NULL, NULL, 0);
      
      return wd;
}

/**
 * END the mywrite wrapper
 * @return 1 if write failed
 * @return unknown global variable otherwise
 * @warning Talks to other functions with global parameters
 */
static int endwrite(WriteData *wd)
{
      int err;

      if (wd->count) {
            writedata_do_write(wd, wd->buf, wd->count);
            wd->count= 0;
      }
      
      err= wd->error;
      writedata_free(wd);
/* blender gods may live forever but this parent pointer died in the statement above
if(wd->current) printf("undo size %d\n", wd->current->size);
*/
      return err;
}

/* ********** WRITE FILE ****************** */

static void writestruct(WriteData *wd, int filecode, char *structname, int nr, void *adr)
{
      BHead bh;
      short *sp;

      if(adr==0 || nr==0) return;

      /* init BHead */
      bh.code= filecode;
      bh.old= adr;
      bh.nr= nr;

      bh.SDNAnr= dna_findstruct_nr(wd->sdna, structname);
      if(bh.SDNAnr== -1) {
            printf("error: can't find SDNA code %s\n", structname);
            return;
      }
      sp= wd->sdna->structs[bh.SDNAnr];

      bh.len= nr*wd->sdna->typelens[sp[0]];

      if(bh.len==0) return;

      mywrite(wd, &bh, sizeof(BHead));
      mywrite(wd, adr, bh.len);
}

static void writedata(WriteData *wd, int filecode, int len, void *adr)  /* do not use for structs */
{
      BHead bh;

      if(adr==0) return;
      if(len==0) return;

      len+= 3;
      len-= ( len % 4);

      /* init BHead */
      bh.code= filecode;
      bh.old= adr;
      bh.nr= 1;
      bh.SDNAnr= 0;
      bh.len= len;

      mywrite(wd, &bh, sizeof(BHead));
      if(len) mywrite(wd, adr, len);
}

static void write_scriptlink(WriteData *wd, ScriptLink *slink)
{
      writedata(wd, DATA, sizeof(void *)*slink->totscript, slink->scripts);
      writedata(wd, DATA, sizeof(short)*slink->totscript, slink->flag);
}

static void write_renderinfo(WriteData *wd)           /* for renderdaemon */
{
      Scene *sce;
      int data[8];

      sce= G.main->scene.first;
      while(sce) {
            if(sce->id.lib==0  && ( sce==G.scene || (sce->r.scemode & R_BG_RENDER)) ) {
                  data[0]= sce->r.sfra;
                  data[1]= sce->r.efra;

                  strncpy((char *)(data+2), sce->id.name+2, 23);

                  writedata(wd, REND, 32, data);
            }
            sce= sce->id.next;
      }
}

static void write_userdef(WriteData *wd)
{
      bTheme *btheme;

      writestruct(wd, USER, "UserDef", 1, &U);

      btheme= U.themes.first;
      while(btheme) {
            writestruct(wd, DATA, "bTheme", 1, btheme);
            btheme= btheme->next;
      }
}

static void write_effects(WriteData *wd, ListBase *lb)
{
      Effect *eff;

      eff= lb->first;
      while(eff) {

            switch(eff->type) {
            case EFF_BUILD:
                  writestruct(wd, DATA, "BuildEff", 1, eff);
                  break;
            case EFF_PARTICLE:
                  writestruct(wd, DATA, "PartEff", 1, eff);
                  break;
            case EFF_WAVE:
                  writestruct(wd, DATA, "WaveEff", 1, eff);
                  break;
            default:
                  writedata(wd, DATA, MEM_allocN_len(eff), eff);
            }

            eff= eff->next;
      }
}

static void write_properties(WriteData *wd, ListBase *lb)
{
      bProperty *prop;

      prop= lb->first;
      while(prop) {
            writestruct(wd, DATA, "bProperty", 1, prop);

            if(prop->poin && prop->poin != &prop->data)
                  writedata(wd, DATA, MEM_allocN_len(prop->poin), prop->poin);

            prop= prop->next;
      }
}

static void write_sensors(WriteData *wd, ListBase *lb)
{
      bSensor *sens;

      sens= lb->first;
      while(sens) {
            writestruct(wd, DATA, "bSensor", 1, sens);

            writedata(wd, DATA, sizeof(void *)*sens->totlinks, sens->links);

            switch(sens->type) {
            case SENS_NEAR:
                  writestruct(wd, DATA, "bNearSensor", 1, sens->data);
                  break;
            case SENS_MOUSE:
                  writestruct(wd, DATA, "bMouseSensor", 1, sens->data);
                  break;
            case SENS_TOUCH:
                  writestruct(wd, DATA, "bTouchSensor", 1, sens->data);
                  break;
            case SENS_KEYBOARD:
                  writestruct(wd, DATA, "bKeyboardSensor", 1, sens->data);
                  break;
            case SENS_PROPERTY:
                  writestruct(wd, DATA, "bPropertySensor", 1, sens->data);
                  break;
            case SENS_COLLISION:
                  writestruct(wd, DATA, "bCollisionSensor", 1, sens->data);
                  break;
            case SENS_RADAR:
                  writestruct(wd, DATA, "bRadarSensor", 1, sens->data);
                  break;
            case SENS_RANDOM:
                  writestruct(wd, DATA, "bRandomSensor", 1, sens->data);
                  break;
            case SENS_RAY:
                  writestruct(wd, DATA, "bRaySensor", 1, sens->data);
                  break;
            case SENS_MESSAGE:
                  writestruct(wd, DATA, "bMessageSensor", 1, sens->data);
                  break;
            default:
                  ; /* error: don't know how to write this file */
            }

            sens= sens->next;
      }
}

static void write_controllers(WriteData *wd, ListBase *lb)
{
      bController *cont;

      cont= lb->first;
      while(cont) {
            writestruct(wd, DATA, "bController", 1, cont);

            writedata(wd, DATA, sizeof(void *)*cont->totlinks, cont->links);

            switch(cont->type) {
            case CONT_EXPRESSION:
                  writestruct(wd, DATA, "bExpressionCont", 1, cont->data);
                  break;
            case CONT_PYTHON:
                  writestruct(wd, DATA, "bPythonCont", 1, cont->data);
                  break;
            default:
                  ; /* error: don't know how to write this file */
            }

            cont= cont->next;
      }
}

static void write_actuators(WriteData *wd, ListBase *lb)
{
      bActuator *act;

      act= lb->first;
      while(act) {
            writestruct(wd, DATA, "bActuator", 1, act);

            switch(act->type) {
            case ACT_ACTION:
                  writestruct(wd, DATA, "bActionActuator", 1, act->data);
                  break;
            case ACT_SOUND:
                  writestruct(wd, DATA, "bSoundActuator", 1, act->data);
                  break;
            case ACT_CD:
                  writestruct(wd, DATA, "bCDActuator", 1, act->data);
                  break;
            case ACT_OBJECT:
                  writestruct(wd, DATA, "bObjectActuator", 1, act->data);
                  break;
            case ACT_IPO:
                  writestruct(wd, DATA, "bIpoActuator", 1, act->data);
                  break;
            case ACT_PROPERTY:
                  writestruct(wd, DATA, "bPropertyActuator", 1, act->data);
                  break;
            case ACT_CAMERA:
                  writestruct(wd, DATA, "bCameraActuator", 1, act->data);
                  break;
            case ACT_CONSTRAINT:
                  writestruct(wd, DATA, "bConstraintActuator", 1, act->data);
                  break;
            case ACT_EDIT_OBJECT:
                  writestruct(wd, DATA, "bEditObjectActuator", 1, act->data);
                  break;
            case ACT_SCENE:
                  writestruct(wd, DATA, "bSceneActuator", 1, act->data);
                  break;
            case ACT_GROUP:
                  writestruct(wd, DATA, "bGroupActuator", 1, act->data);
                  break;
            case ACT_RANDOM:
                  writestruct(wd, DATA, "bRandomActuator", 1, act->data);
                  break;
            case ACT_MESSAGE:
                  writestruct(wd, DATA, "bMessageActuator", 1, act->data);
                  break;
            case ACT_GAME:
                  writestruct(wd, DATA, "bGameActuator", 1, act->data);
                  break;
            case ACT_VISIBILITY:
                  writestruct(wd, DATA, "bVisibilityActuator", 1, act->data);
                  break;
            default:
                  ; /* error: don't know how to write this file */
            }

            act= act->next;
      }
}

static void write_nlastrips(WriteData *wd, ListBase *nlabase)
{
      bActionStrip *strip;

      for (strip=nlabase->first; strip; strip=strip->next)
            writestruct(wd, DATA, "bActionStrip", 1, strip);
}

static void write_constraints(WriteData *wd, ListBase *conlist)
{
      bConstraint *con;

      for (con=conlist->first; con; con=con->next) {
            /* Write the specific data */
            switch (con->type) {
            case CONSTRAINT_TYPE_NULL:
                  break;
            case CONSTRAINT_TYPE_TRACKTO:
                  writestruct(wd, DATA, "bTrackToConstraint", 1, con->data);
                  break;
            case CONSTRAINT_TYPE_KINEMATIC:
                  writestruct(wd, DATA, "bKinematicConstraint", 1, con->data);
                  break;
            case CONSTRAINT_TYPE_ROTLIKE:
                  writestruct(wd, DATA, "bRotateLikeConstraint", 1, con->data);
                  break;
            case CONSTRAINT_TYPE_LOCLIKE:
                  writestruct(wd, DATA, "bLocateLikeConstraint", 1, con->data);
                  break;
            case CONSTRAINT_TYPE_ACTION:
                  writestruct(wd, DATA, "bActionConstraint", 1, con->data);
                  break;
            case CONSTRAINT_TYPE_LOCKTRACK:
                  writestruct(wd, DATA, "bLockTrackConstraint", 1, con->data);
                  break;
            case CONSTRAINT_TYPE_FOLLOWPATH:
                  writestruct(wd, DATA, "bFollowPathConstraint", 1, con->data);
                  break;
            case CONSTRAINT_TYPE_STRETCHTO:
                  writestruct(wd, DATA, "bStretchToConstraint", 1, con->data);
                  break;
            default:
                  break;
            }
            /* Write the constraint */
            writestruct(wd, DATA, "bConstraint", 1, con);
      }
}

static void write_pose(WriteData *wd, bPose *pose)
{
      bPoseChannel      *chan;

      /* Write each channel */

      if (!pose)
            return;

      // Write channels
      for (chan=pose->chanbase.first; chan; chan=chan->next) {
            write_constraints(wd, &chan->constraints);
            writestruct(wd, DATA, "bPoseChannel", 1, chan);
      }

      // Write this pose
      writestruct(wd, DATA, "bPose", 1, pose);
}

static void write_defgroups(WriteData *wd, ListBase *defbase)
{
      bDeformGroup      *defgroup;

      for (defgroup=defbase->first; defgroup; defgroup=defgroup->next)
            writestruct(wd, DATA, "bDeformGroup", 1, defgroup);
}

static void write_constraint_channels(WriteData *wd, ListBase *chanbase)
{
      bConstraintChannel *chan;

      for (chan = chanbase->first; chan; chan=chan->next)
            writestruct(wd, DATA, "bConstraintChannel", 1, chan);

}

static void write_objects(WriteData *wd, ListBase *idbase)
{
      Object *ob;
      ObHook *hook;
      
      ob= idbase->first;
      while(ob) {
            if(ob->id.us>0 || wd->current) {
                  /* write LibData */
                  writestruct(wd, ID_OB, "Object", 1, ob);

                  /* direct data */
                  writedata(wd, DATA, sizeof(void *)*ob->totcol, ob->mat);
                  write_effects(wd, &ob->effect);
                  write_properties(wd, &ob->prop);
                  write_sensors(wd, &ob->sensors);
                  write_controllers(wd, &ob->controllers);
                  write_actuators(wd, &ob->actuators);
                  write_scriptlink(wd, &ob->scriptlink);
                  write_pose(wd, ob->pose);
                  write_defgroups(wd, &ob->defbase);
                  write_constraints(wd, &ob->constraints);
                  write_constraint_channels(wd, &ob->constraintChannels);
                  write_nlastrips(wd, &ob->nlastrips);
                  
                  writestruct(wd, DATA, "PartDeflect", 1, ob->pd);
                  
                  for(hook= ob->hooks.first; hook; hook= hook->next) {
                        writestruct(wd, DATA, "ObHook", 1, hook);
                        writedata(wd, DATA, sizeof(int)*hook->totindex, hook->indexar);
                  }
            }
            ob= ob->id.next;
      }

      /* flush helps the compression for undo-save */
      mywrite(wd, MYWRITE_FLUSH, 0);
}


static void write_vfonts(WriteData *wd, ListBase *idbase)
{
      VFont *vf;
      PackedFile * pf;

      vf= idbase->first;
      while(vf) {
            if(vf->id.us>0 || wd->current) {
                  /* write LibData */
                  writestruct(wd, ID_VF, "VFont", 1, vf);

                  /* direct data */

                  if (vf->packedfile) {
                        pf = vf->packedfile;
                        writestruct(wd, DATA, "PackedFile", 1, pf);
                        writedata(wd, DATA, pf->size, pf->data);
                  }
            }

            vf= vf->id.next;
      }
}

static void write_ipos(WriteData *wd, ListBase *idbase)
{
      Ipo *ipo;
      IpoCurve *icu;

      ipo= idbase->first;
      while(ipo) {
            if(ipo->id.us>0 || wd->current) {
                  /* write LibData */
                  writestruct(wd, ID_IP, "Ipo", 1, ipo);

                  /* direct data */
                  icu= ipo->curve.first;
                  while(icu) {
                        writestruct(wd, DATA, "IpoCurve", 1, icu);
                        icu= icu->next;
                  }

                  icu= ipo->curve.first;
                  while(icu) {
                        if(icu->bezt)  writestruct(wd, DATA, "BezTriple", icu->totvert, icu->bezt);
                        if(icu->bp)  writestruct(wd, DATA, "BPoint", icu->totvert, icu->bp);
                        icu= icu->next;
                  }
            }

            ipo= ipo->id.next;
      }

      /* flush helps the compression for undo-save */
      mywrite(wd, MYWRITE_FLUSH, 0);
}

static void write_keys(WriteData *wd, ListBase *idbase)
{
      Key *key;
      KeyBlock *kb;

      key= idbase->first;
      while(key) {
            if(key->id.us>0 || wd->current) {
                  /* write LibData */
                  writestruct(wd, ID_KE, "Key", 1, key);

                  /* direct data */
                  kb= key->block.first;
                  while(kb) {
                        writestruct(wd, DATA, "KeyBlock", 1, kb);
                        if(kb->data) writedata(wd, DATA, kb->totelem*key->elemsize, kb->data);
                        kb= kb->next;
                  }
            }

            key= key->id.next;
      }
      /* flush helps the compression for undo-save */
      mywrite(wd, MYWRITE_FLUSH, 0);
}

static void write_cameras(WriteData *wd, ListBase *idbase)
{
      Camera *cam;

      cam= idbase->first;
      while(cam) {
            if(cam->id.us>0 || wd->current) {
                  /* write LibData */
                  writestruct(wd, ID_CA, "Camera", 1, cam);

                  /* direct data */
                  write_scriptlink(wd, &cam->scriptlink);
            }

            cam= cam->id.next;
      }
}

static void write_mballs(WriteData *wd, ListBase *idbase)
{
      MetaBall *mb;
      MetaElem *ml;

      mb= idbase->first;
      while(mb) {
            if(mb->id.us>0 || wd->current) {
                  /* write LibData */
                  writestruct(wd, ID_MB, "MetaBall", 1, mb);

                  /* direct data */
                  writedata(wd, DATA, sizeof(void *)*mb->totcol, mb->mat);

                  ml= mb->elems.first;
                  while(ml) {
                        writestruct(wd, DATA, "MetaElem", 1, ml);
                        ml= ml->next;
                  }
            }
            mb= mb->id.next;
      }
}

static void write_curves(WriteData *wd, ListBase *idbase)
{
      Curve *cu;
      Nurb *nu;

      cu= idbase->first;
      while(cu) {
            if(cu->id.us>0 || wd->current) {
                  /* write LibData */
                  writestruct(wd, ID_CU, "Curve", 1, cu);

                  /* direct data */
                  writedata(wd, DATA, sizeof(void *)*cu->totcol, cu->mat);

                  if(cu->vfont) {
                        writedata(wd, DATA, cu->len+1, cu->str);
                  }
                  else {
                        /* is also the order of reading */
                        nu= cu->nurb.first;
                        while(nu) {
                              writestruct(wd, DATA, "Nurb", 1, nu);
                              nu= nu->next;
                        }
                        nu= cu->nurb.first;
                        while(nu) {
                              if( (nu->type & 7)==CU_BEZIER)
                                    writestruct(wd, DATA, "BezTriple", nu->pntsu, nu->bezt);
                              else {
                                    writestruct(wd, DATA, "BPoint", nu->pntsu*nu->pntsv, nu->bp);
                                    if(nu->knotsu) writedata(wd, DATA, KNOTSU(nu)*sizeof(float), nu->knotsu);
                                    if(nu->knotsv) writedata(wd, DATA, KNOTSV(nu)*sizeof(float), nu->knotsv);
                              }
                              nu= nu->next;
                        }
                  }
            }
            cu= cu->id.next;
      }

      /* flush helps the compression for undo-save */
      mywrite(wd, MYWRITE_FLUSH, 0);
}

static void write_dverts(WriteData *wd, int count, MDeformVert *dvlist)
{
      int   i;

      /* Write the dvert list */
      writestruct(wd, DATA, "MDeformVert", count, dvlist);

      /* Write deformation data for each dvert */
      if (dvlist) {
            for (i=0; i<count; i++) {
                  if (dvlist[i].dw)
                        writestruct(wd, DATA, "MDeformWeight", dvlist[i].totweight, dvlist[i].dw);
            }
      }
}

static void write_meshs(WriteData *wd, ListBase *idbase)
{
      Mesh *mesh;

      mesh= idbase->first;
      while(mesh) {
            if(mesh->id.us>0 || wd->current) {
                  /* write LibData */
                  writestruct(wd, ID_ME, "Mesh", 1, mesh);

                  /* direct data */
                  writedata(wd, DATA, sizeof(void *)*mesh->totcol, mesh->mat);

                  writestruct(wd, DATA, "MVert", mesh->totvert, mesh->mvert);
                  writestruct(wd, DATA, "MEdge", mesh->totedge, mesh->medge);
                  writestruct(wd, DATA, "MFace", mesh->totface, mesh->mface);
                  writestruct(wd, DATA, "TFace", mesh->totface, mesh->tface);
                  writestruct(wd, DATA, "MCol", 4*mesh->totface, mesh->mcol);
                  writestruct(wd, DATA, "MSticky", mesh->totvert, mesh->msticky);

                  write_dverts(wd, mesh->totvert, mesh->dvert);

            }
            mesh= mesh->id.next;
      }
}

static void write_images(WriteData *wd, ListBase *idbase)
{
      Image *ima;
      PackedFile * pf;

      ima= idbase->first;
      while(ima) {
            if(ima->id.us>0 || wd->current) {
                  /* write LibData */
                  writestruct(wd, ID_IM, "Image", 1, ima);

                  if (ima->packedfile) {
                        pf = ima->packedfile;
                        writestruct(wd, DATA, "PackedFile", 1, pf);
                        writedata(wd, DATA, pf->size, pf->data);
                  }
            }
            ima= ima->id.next;
      }
      /* flush helps the compression for undo-save */
      mywrite(wd, MYWRITE_FLUSH, 0);
}

static void write_textures(WriteData *wd, ListBase *idbase)
{
      Tex *tex;

      tex= idbase->first;
      while(tex) {
            if(tex->id.us>0 || wd->current) {
                  /* write LibData */
                  writestruct(wd, ID_TE, "Tex", 1, tex);

                  /* direct data */
                  if(tex->plugin) writestruct(wd, DATA, "PluginTex", 1, tex->plugin);
                  if(tex->coba) writestruct(wd, DATA, "ColorBand", 1, tex->coba);
                  if(tex->env) writestruct(wd, DATA, "EnvMap", 1, tex->env);
            }
            tex= tex->id.next;
      }

      /* flush helps the compression for undo-save */
      mywrite(wd, MYWRITE_FLUSH, 0);
}

static void write_materials(WriteData *wd, ListBase *idbase)
{
      Material *ma;
      int a;

      ma= idbase->first;
      while(ma) {
            if(ma->id.us>0 || wd->current) {
                  /* write LibData */
                  writestruct(wd, ID_MA, "Material", 1, ma);

                  for(a=0; a<MAX_MTEX; a++) {
                        if(ma->mtex[a]) writestruct(wd, DATA, "MTex", 1, ma->mtex[a]);
                  }
                  
                  if(ma->ramp_col) writestruct(wd, DATA, "ColorBand", 1, ma->ramp_col);
                  if(ma->ramp_spec) writestruct(wd, DATA, "ColorBand", 1, ma->ramp_spec);
                  
                  write_scriptlink(wd, &ma->scriptlink);
            }
            ma= ma->id.next;
      }
}

static void write_worlds(WriteData *wd, ListBase *idbase)
{
      World *wrld;
      int a;

      wrld= idbase->first;
      while(wrld) {
            if(wrld->id.us>0 || wd->current) {
                  /* write LibData */
                  writestruct(wd, ID_WO, "World", 1, wrld);

                  for(a=0; a<MAX_MTEX; a++) {
                        if(wrld->mtex[a]) writestruct(wd, DATA, "MTex", 1, wrld->mtex[a]);
                  }

                  write_scriptlink(wd, &wrld->scriptlink);
            }
            wrld= wrld->id.next;
      }
}

static void write_lamps(WriteData *wd, ListBase *idbase)
{
      Lamp *la;
      int a;

      la= idbase->first;
      while(la) {
            if(la->id.us>0 || wd->current) {
                  /* write LibData */
                  writestruct(wd, ID_LA, "Lamp", 1, la);

                  /* direct data */
                  for(a=0; a<MAX_MTEX; a++) {
                        if(la->mtex[a]) writestruct(wd, DATA, "MTex", 1, la->mtex[a]);
                  }

                  write_scriptlink(wd, &la->scriptlink);
            }
            la= la->id.next;
      }
}

static void write_lattices(WriteData *wd, ListBase *idbase)
{
      Lattice *lt;

      lt= idbase->first;
      while(lt) {
            if(lt->id.us>0 || wd->current) {
                  /* write LibData */
                  writestruct(wd, ID_LT, "Lattice", 1, lt);

                  /* direct data */
                  writestruct(wd, DATA, "BPoint", lt->pntsu*lt->pntsv*lt->pntsw, lt->def);
            }
            lt= lt->id.next;
      }
}

static void write_ikas(WriteData *wd, ListBase *idbase)
{
      Ika *ika;
      Limb *li;

      ika= idbase->first;
      while(ika) {
            if(ika->id.us>0 || wd->current) {
                  /* write LibData */
                  writestruct(wd, ID_IK, "Ika", 1, ika);

                  /* direct data */
                  li= ika->limbbase.first;
                  while(li) {
                        writestruct(wd, DATA, "Limb", 1, li);
                        li= li->next;
                  }

                  writestruct(wd, DATA, "Deform", ika->totdef, ika->def);
            }
            ika= ika->id.next;
      }
}

static void write_scenes(WriteData *wd, ListBase *scebase)
{
      Scene *sce;
      Base *base;
      Editing *ed;
      Sequence *seq;
      MetaStack *ms;
      Strip *strip;

      sce= scebase->first;
      while(sce) {
            /* write LibData */
            writestruct(wd, ID_SCE, "Scene", 1, sce);

            /* direct data */
            base= sce->base.first;
            while(base) {
                  writestruct(wd, DATA, "Base", 1, base);
                  base= base->next;
            }

            writestruct(wd, DATA, "Radio", 1, sce->radio);

            ed= sce->ed;
            if(ed) {
                  writestruct(wd, DATA, "Editing", 1, ed);

                  /* reset write flags too */
                  WHILE_SEQ(&ed->seqbase) {
                        if(seq->strip) seq->strip->done= 0;
                        writestruct(wd, DATA, "Sequence", 1, seq);
                  }
                  END_SEQ

                  WHILE_SEQ(&ed->seqbase) {
                        if(seq->strip && seq->strip->done==0) {
                              /* write strip with 'done' at 0 because readfile */

                              if(seq->plugin) writestruct(wd, DATA, "PluginSeq", 1, seq->plugin);
                              if(seq->effectdata) {
                                    switch(seq->type){
                                          case SEQ_WIPE:
                                                writestruct(wd, DATA, "WipeVars", 1, seq->effectdata);
                                                break;
                                          case SEQ_GLOW:
                                                writestruct(wd, DATA, "GlowVars", 1, seq->effectdata);
                                                break;
                                    }
                              }

                              strip= seq->strip;
                              writestruct(wd, DATA, "Strip", 1, strip);

                              if(seq->type==SEQ_IMAGE)
                                    writestruct(wd, DATA, "StripElem", strip->len, strip->stripdata);
                              else if(seq->type==SEQ_MOVIE || seq->type==SEQ_SOUND)
                                    writestruct(wd, DATA, "StripElem", 1, strip->stripdata);

                              strip->done= 1;
                        }
                  }
                  END_SEQ
                        
                  /* new; meta stack too, even when its nasty restore code */
                  for(ms= ed->metastack.first; ms; ms= ms->next) {
                        writestruct(wd, DATA, "MetaStack", 1, ms);
                  }
            }

            write_scriptlink(wd, &sce->scriptlink);

            if (sce->r.avicodecdata) {
                  writestruct(wd, DATA, "AviCodecData", 1, sce->r.avicodecdata);
                  if (sce->r.avicodecdata->lpFormat) writedata(wd, DATA, sce->r.avicodecdata->cbFormat, sce->r.avicodecdata->lpFormat);
                  if (sce->r.avicodecdata->lpParms) writedata(wd, DATA, sce->r.avicodecdata->cbParms, sce->r.avicodecdata->lpParms);
            }

            if (sce->r.qtcodecdata) {
                  writestruct(wd, DATA, "QuicktimeCodecData", 1, sce->r.qtcodecdata);
                  if (sce->r.qtcodecdata->cdParms) writedata(wd, DATA, sce->r.qtcodecdata->cdSize, sce->r.qtcodecdata->cdParms);
            }

            sce= sce->id.next;
      }
      /* flush helps the compression for undo-save */
      mywrite(wd, MYWRITE_FLUSH, 0);
}

static void write_screens(WriteData *wd, ListBase *scrbase)
{
      bScreen *sc;
      ScrArea *sa;
      ScrVert *sv;
      ScrEdge *se;

      sc= scrbase->first;
      while(sc) {
            /* write LibData */
            writestruct(wd, ID_SCR, "Screen", 1, sc);

            /* direct data */
            sv= sc->vertbase.first;
            while(sv) {
                  writestruct(wd, DATA, "ScrVert", 1, sv);
                  sv= sv->next;
            }

            se= sc->edgebase.first;
            while(se) {
                  writestruct(wd, DATA, "ScrEdge", 1, se);
                  se= se->next;
            }

            sa= sc->areabase.first;
            while(sa) {
                  SpaceLink *sl;
                  Panel *pa;

                  writestruct(wd, DATA, "ScrArea", 1, sa);

                  pa= sa->panels.first;
                  while(pa) {
                        writestruct(wd, DATA, "Panel", 1, pa);
                        pa= pa->next;
                  }

                  sl= sa->spacedata.first;
                  while(sl) {
                        if(sl->spacetype==SPACE_VIEW3D) {
                              View3D *v3d= (View3D*) sl;
                              writestruct(wd, DATA, "View3D", 1, v3d);
                              if(v3d->bgpic) writestruct(wd, DATA, "BGpic", 1, v3d->bgpic);
                              if(v3d->localvd) writestruct(wd, DATA, "View3D", 1, v3d->localvd);
                        }
                        else if(sl->spacetype==SPACE_IPO) {
                              writestruct(wd, DATA, "SpaceIpo", 1, sl);
                        }
                        else if(sl->spacetype==SPACE_BUTS) {
                              writestruct(wd, DATA, "SpaceButs", 1, sl);
                        }
                        else if(sl->spacetype==SPACE_FILE) {
                              writestruct(wd, DATA, "SpaceFile", 1, sl);
                        }
                        else if(sl->spacetype==SPACE_SEQ) {
                              writestruct(wd, DATA, "SpaceSeq", 1, sl);
                        }
                        else if(sl->spacetype==SPACE_OOPS) {
                              SpaceOops *so= (SpaceOops *)sl;
                              Oops *oops;

                              /* cleanup */
                              oops= so->oops.first;
                              while(oops) {
                                    Oops *oopsn= oops->next;
                                    if(oops->id==0) {
                                          BLI_remlink(&so->oops, oops);
                                          free_oops(oops);
                                    }
                                    oops= oopsn;
                              }

                              /* ater cleanup, because of listbase! */
                              writestruct(wd, DATA, "SpaceOops", 1, so);

                              oops= so->oops.first;
                              while(oops) {
                                    writestruct(wd, DATA, "Oops", 1, oops);
                                    oops= oops->next;
                              }
                              /* outliner */
                              if(so->treestore) {
                                    writestruct(wd, DATA, "TreeStore", 1, so->treestore);
                                    if(so->treestore->data)
                                          writestruct(wd, DATA, "TreeStoreElem", so->treestore->usedelem, so->treestore->data);
                              }
                        }
                        else if(sl->spacetype==SPACE_IMAGE) {
                              writestruct(wd, DATA, "SpaceImage", 1, sl);
                        }
                        else if(sl->spacetype==SPACE_IMASEL) {
                              writestruct(wd, DATA, "SpaceImaSel", 1, sl);
                        }
                        else if(sl->spacetype==SPACE_TEXT) {
                              writestruct(wd, DATA, "SpaceText", 1, sl);
                        }
                        else if(sl->spacetype==SPACE_SCRIPT) {
                              writestruct(wd, DATA, "SpaceScript", 1, sl);
                        }
                        else if(sl->spacetype==SPACE_ACTION) {
                              writestruct(wd, DATA, "SpaceAction", 1, sl);
                        }
                        else if(sl->spacetype==SPACE_SOUND) {
                              writestruct(wd, DATA, "SpaceSound", 1, sl);
                        }
                        else if(sl->spacetype==SPACE_NLA){
                              writestruct(wd, DATA, "SpaceNla", 1, sl);
                        }
                        sl= sl->next;
                  }

                  sa= sa->next;
            }

            sc= sc->id.next;
      }
}

static void write_libraries(WriteData *wd, Main *main)
{
      ListBase *lbarray[30];
      ID *id;
      int a, tot, foundone;

      while(main) {

            a=tot= set_listbasepointers(main, lbarray);

            /* test: is lib being used */
            foundone= 0;
            while(tot--) {
                  id= lbarray[tot]->first;
                  while(id) {
                        if(id->us>0 && (id->flag & LIB_EXTERN)) {
                              foundone= 1;
                              break;
                        }
                        id= id->next;
                  }
                  if(foundone) break;
            }

            if(foundone) {
                  writestruct(wd, ID_LI, "Library", 1, main->curlib);

                  while(a--) {
                        id= lbarray[a]->first;
                        while(id) {
                              if(id->us>0 && (id->flag & LIB_EXTERN)) {

                                    writestruct(wd, ID_ID, "ID", 1, id);
                              }
                              id= id->next;
                        }
                  }
            }

            main= main->next;
      }
}

static void write_bone(WriteData *wd, Bone* bone)
{
      Bone* cbone;

//    write_constraints(wd, &bone->constraints);

      // Write this bone
      writestruct(wd, DATA, "Bone", 1, bone);

      // Write Children
      cbone= bone->childbase.first;
      while(cbone) {
            write_bone(wd, cbone);
            cbone= cbone->next;
      }
}

static void write_armatures(WriteData *wd, ListBase *idbase)
{
      bArmature   *arm;
      Bone        *bone;

      arm=idbase->first;
      while (arm) {
            if (arm->id.us>0 || wd->current) {
                  writestruct(wd, ID_AR, "bArmature", 1, arm);

                  /* Direct data */
                  bone= arm->bonebase.first;
                  while(bone) {
                        write_bone(wd, bone);
                        bone=bone->next;
                  }
            }
            arm=arm->id.next;
      }

      /* flush helps the compression for undo-save */
      mywrite(wd, MYWRITE_FLUSH, 0);
}

static void write_actions(WriteData *wd, ListBase *idbase)
{
      bAction                 *act;
      bActionChannel    *chan;
      act=idbase->first;
      while (act) {
            if (act->id.us>0 || wd->current) {
                  writestruct(wd, ID_AC, "bAction", 1, act);

                  for (chan=act->chanbase.first; chan; chan=chan->next) {
                        writestruct(wd, DATA, "bActionChannel", 1, chan);
                        write_constraint_channels(wd, &chan->constraintChannels);
                  }
            }
            act=act->id.next;
      }
}

static void write_texts(WriteData *wd, ListBase *idbase)
{
      Text *text;
      TextLine *tmp;

      text= idbase->first;
      while(text) {
            if ( (text->flags & TXT_ISMEM) && (text->flags & TXT_ISEXT)) text->flags &= ~TXT_ISEXT;

            /* write LibData */
            writestruct(wd, ID_TXT, "Text", 1, text);
            if(text->name) writedata(wd, DATA, strlen(text->name)+1, text->name);

            if(!(text->flags & TXT_ISEXT)) {
                  /* now write the text data, in two steps for optimization in the readfunction */
                  tmp= text->lines.first;
                  while (tmp) {
                        writestruct(wd, DATA, "TextLine", 1, tmp);
                        tmp= tmp->next;
                  }

                  tmp= text->lines.first;
                  while (tmp) {
                        writedata(wd, DATA, tmp->len+1, tmp->line);
                        tmp= tmp->next;
                  }
            }
            text= text->id.next;
      }

      /* flush helps the compression for undo-save */
      mywrite(wd, MYWRITE_FLUSH, 0);
}

static void write_sounds(WriteData *wd, ListBase *idbase)
{
      bSound *sound;
      bSample *sample;

      PackedFile * pf;

      // set all samples to unsaved status

      sample = samples->first;
      while (sample) {
            sample->flags |= SAMPLE_NEEDS_SAVE;
            sample = sample->id.next;
      }

      sound= idbase->first;
      while(sound) {
            if(sound->id.us>0 || wd->current) {
                  // do we need to save the packedfile as well ?
                  sample = sound->sample;
                  if (sample) {
                        if (sample->flags & SAMPLE_NEEDS_SAVE) {
                              sound->newpackedfile = sample->packedfile;
                              sample->flags &= ~SAMPLE_NEEDS_SAVE;
                        } else {
                              sound->newpackedfile = NULL;
                        }
                  }

                  /* write LibData */
                  writestruct(wd, ID_SO, "bSound", 1, sound);

                  if (sound->newpackedfile) {
                        pf = sound->newpackedfile;
                        writestruct(wd, DATA, "PackedFile", 1, pf);
                        writedata(wd, DATA, pf->size, pf->data);
                  }

                  if (sample) {
                        sound->newpackedfile = sample->packedfile;
                  }
            }
            sound= sound->id.next;
      }

      /* flush helps the compression for undo-save */
      mywrite(wd, MYWRITE_FLUSH, 0);
}

static void write_groups(WriteData *wd, ListBase *idbase)
{
      Group *group;
      GroupKey *gk;
      GroupObject *go;
      ObjectKey *ok;

      group= idbase->first;
      while(group) {
            if(group->id.us>0 || wd->current) {
                  /* write LibData */
                  writestruct(wd, ID_GR, "Group", 1, group);

                  gk= group->gkey.first;
                  while(gk) {
                        writestruct(wd, DATA, "GroupKey", 1, gk);
                        gk= gk->next;
                  }

                  go= group->gobject.first;
                  while(go) {
                        writestruct(wd, DATA, "GroupObject", 1, go);
                        go= go->next;
                  }
                  go= group->gobject.first;
                  while(go) {
                        ok= go->okey.first;
                        while(ok) {
                              writestruct(wd, DATA, "ObjectKey", 1, ok);
                              ok= ok->next;
                        }
                        go= go->next;
                  }

            }
            group= group->id.next;
      }
}

static void write_global(WriteData *wd)
{
      FileGlobal fg;

      fg.curscreen= G.curscreen;
      fg.curscene= G.scene;
      fg.displaymode= R.displaymode;
      fg.winpos= R.winpos;
      fg.fileflags= (G.fileflags & ~G_FILE_NO_UI);    // prevent to save this, is not good convention, and feature with concerns...
      fg.globalf= G.f;

      writestruct(wd, GLOB, "FileGlobal", 1, &fg);
}

/* if *mem there's filesave to memory */
static int write_file_handle(int handle, MemFile *compare, MemFile *current, int write_user_block, int write_flags)
{
      BHead bhead;
      ListBase mainlist;
      char buf[13];
      WriteData *wd;
      int data;

      mainlist.first= mainlist.last= G.main;
      G.main->next= NULL;

      blo_split_main(&mainlist);

      wd= bgnwrite(handle, compare, current, write_flags);
      
      sprintf(buf, "BLENDER%c%c%.3d", (sizeof(void*)==8)?'-':'_', (G.order==B_ENDIAN)?'V':'v', G.version);
      mywrite(wd, buf, 12);

      write_renderinfo(wd);
      
      if(current==NULL)
            write_screens  (wd, &G.main->screen);     // no UI save
      write_scenes   (wd, &G.main->scene);
      write_curves   (wd, &G.main->curve);
      write_mballs   (wd, &G.main->mball);
      write_images   (wd, &G.main->image);
      write_cameras  (wd, &G.main->camera);
      write_lamps    (wd, &G.main->lamp);
      write_lattices (wd, &G.main->latt);
      write_ikas     (wd, &G.main->ika);
      write_vfonts   (wd, &G.main->vfont);
      write_ipos     (wd, &G.main->ipo);
      write_keys     (wd, &G.main->key);
      write_worlds   (wd, &G.main->world);
      write_texts    (wd, &G.main->text);
      write_sounds   (wd, &G.main->sound);
      write_groups   (wd, &G.main->group);
      write_armatures(wd, &G.main->armature);
      write_actions  (wd, &G.main->action);
      write_objects  (wd, &G.main->object);
      write_materials(wd, &G.main->mat);
      write_textures (wd, &G.main->tex);
      write_meshs    (wd, &G.main->mesh);
      write_libraries(wd,  G.main->next);

      write_global(wd);
      if (write_user_block) {
            write_userdef(wd);
      }

      /* dna as last, because (to be implemented) test for which structs are written */
      writedata(wd, DNA1, wd->sdna->datalen, wd->sdna->data);

      /* end of file */
      memset(&bhead, 0, sizeof(BHead));
      bhead.code= ENDB;
      mywrite(wd, &bhead, sizeof(BHead));

      blo_join_main(&mainlist);
      G.main= mainlist.first;

      return endwrite(wd);
}

/* return: success (1) */
int BLO_write_file(char *dir, int write_flags, char **error_r)
{
      char userfilename[FILE_MAXDIR+FILE_MAXFILE];
      char tempname[FILE_MAXDIR+FILE_MAXFILE];
      int file, fout, write_user_block;
#ifdef WIN32
      char tmpdir[FILE_MAXDIR+FILE_MAXFILE];
#endif

      sprintf(tempname, "%s@", dir);

      file = open(tempname,O_BINARY+O_WRONLY+O_CREAT+O_TRUNC, 0666);
      if(file == -1) {
            *error_r= "Unable to open";
            return 0;
      }

      BLI_make_file_string(G.sce, userfilename, BLI_gethome(), ".B.blend");

      write_user_block= BLI_streq(dir, userfilename);

      fout= write_file_handle(file, NULL,NULL, write_user_block, write_flags);
      close(file);

      if(!fout) {
            if(BLI_rename(tempname, dir) < 0) {
                  *error_r= "Can't change old file. File saved with @";
                  return 0;
            }
      } else {
            remove(tempname);

            *error_r= "Not enough diskspace";
            return 0;
      }

      return 1;
}

/* return: success (1) */
int BLO_write_file_mem(MemFile *compare, MemFile *current, int write_flags, char **error_r)
{
      int err;

      err= write_file_handle(0, compare, current, 0, write_flags);
      
      if(err==0) return 1;
      return 0;
}


      /* Runtime writing */

#ifdef WIN32
#define PATHSEPERATOR         "\\"
#else
#define PATHSEPERATOR         "/"
#endif

static char *get_install_dir(void) {
      extern char bprogname[];
      char *tmpname = BLI_strdup(bprogname);
      char *cut;

#ifdef __APPLE__
      cut = strstr(tmpname, ".app");
      if (cut) cut[0] = 0;
#endif

      cut = BLI_last_slash(tmpname);

      if (cut) {
            cut[0] = 0;
            return tmpname;
      } else {
            MEM_freeN(tmpname);
            return NULL;
      }
}

static char *get_runtime_path(char *exename) {
      char *installpath= get_install_dir();

      if (!installpath) {
            return NULL;
      } else {
            char *path= MEM_mallocN(strlen(installpath)+strlen(PATHSEPERATOR)+strlen(exename)+1, "runtimepath");
            strcpy(path, installpath);
            strcat(path, PATHSEPERATOR);
            strcat(path, exename);

            MEM_freeN(installpath);

            return path;
      }
}

#ifdef __APPLE__

static int recursive_copy_runtime(char *outname, char *exename, char **cause_r) 
{
      char *cause = NULL, *runtime = get_runtime_path(exename);
      char command[2 * (FILE_MAXDIR+FILE_MAXFILE) + 32];
      int progfd = -1;

      if (!runtime) {
            cause= "Unable to find runtime";
            goto cleanup;
      }
      //printf("runtimepath %s\n", runtime);
            
      progfd= open(runtime, O_BINARY|O_RDONLY, 0);
      if (progfd==-1) {
            cause= "Unable to find runtime";
            goto cleanup;
      }

      sprintf(command, "/bin/cp -R \"%s\" \"%s\"", runtime, outname);
      //printf("command %s\n", command);
      if (system(command) == -1) {
            cause = "Couldn't copy runtime";
      }

cleanup:
      if (progfd!=-1)
            close(progfd);
      if (runtime)
            MEM_freeN(runtime);

      if (cause) {
            *cause_r= cause;
            return 0;
      } else
            return 1;
}

void BLO_write_runtime(char *file, char *exename) {
      char gamename[FILE_MAXDIR+FILE_MAXFILE];
      int outfd = -1;
      char *cause= NULL;

      // remove existing file / bundle
      //printf("Delete file %s\n", file);
      BLI_delete(file, NULL, TRUE);

      if (!recursive_copy_runtime(file, exename, &cause))
            goto cleanup;

      strcpy(gamename, file);
      strcat(gamename, "/Contents/Resources/game.blend");
      //printf("gamename %s\n", gamename);
      outfd= open(gamename, O_BINARY|O_WRONLY|O_CREAT|O_TRUNC, 0777);
      if (outfd != -1) {

            write_file_handle(outfd, NULL,NULL, 0, G.fileflags);

            if (write(outfd, " ", 1) != 1) {
                  cause= "Unable to write to output file";
                  goto cleanup;
            }
      } else {
            cause = "Unable to open blenderfile";
      }

cleanup:
      if (outfd!=-1)
            close(outfd);

      if (cause)
            error("Unable to make runtime: %s", cause);
}

#else /* !__APPLE__ */

static int handle_append_runtime(int handle, char *exename, char **cause_r) {
      char *cause= NULL, *runtime= get_runtime_path(exename);
      unsigned char buf[1024];
      int count, progfd= -1;

      if (!runtime) {
            cause= "Unable to find runtime";
            goto cleanup;
      }

      progfd= open(runtime, O_BINARY|O_RDONLY, 0);
      if (progfd==-1) {
            cause= "Unable to find runtime";
            goto cleanup;
      }

      while ((count= read(progfd, buf, sizeof(buf)))>0) {
            if (write(handle, buf, count)!=count) {
                  cause= "Unable to write to output file";
                  goto cleanup;
            }
      }

cleanup:
      if (progfd!=-1)
            close(progfd);
      if (runtime)
            MEM_freeN(runtime);

      if (cause) {
            *cause_r= cause;
            return 0;
      } else
            return 1;
}

static int handle_write_msb_int(int handle, int i) {
      unsigned char buf[4];
      buf[0]= (i>>24)&0xFF;
      buf[1]= (i>>16)&0xFF;
      buf[2]= (i>>8)&0xFF;
      buf[3]= (i>>0)&0xFF;

      return (write(handle, buf, 4)==4);
}

void BLO_write_runtime(char *file, char *exename) {
      int outfd= open(file, O_BINARY|O_WRONLY|O_CREAT|O_TRUNC, 0777);
      char *cause= NULL;
      int datastart;

      if (!outfd) {
            cause= "Unable to open output file";
            goto cleanup;
      }
      if (!handle_append_runtime(outfd, exename, &cause))
            goto cleanup;

      datastart= lseek(outfd, 0, SEEK_CUR);

      write_file_handle(outfd, NULL,NULL, 0, G.fileflags);

      if (!handle_write_msb_int(outfd, datastart) || (write(outfd, "BRUNTIME", 8)!=8)) {
            cause= "Unable to write to output file";
            goto cleanup;
      }

cleanup:
      if (outfd!=-1)
            close(outfd);

      if (cause)
            error("Unable to make runtime: %s", cause);
}

#endif /* !__APPLE__ */

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