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230
source/blender/python/api2_2x/EXPP_interface.c
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230
source/blender/python/api2_2x/EXPP_interface.c
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/*
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* $Id$
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*
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* ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version. The Blender
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* Foundation also sells licenses for use in proprietary software under
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* the Blender License. See http://www.blender.org/BL/ for information
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* about this.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
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* All rights reserved.
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*
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* This is a new part of Blender.
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*
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* Contributor(s): Michel Selten
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*
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* ***** END GPL/BL DUAL LICENSE BLOCK *****
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*/
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#include <Python.h>
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#include "EXPP_interface.h"
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#include "BLI_blenlib.h"
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#include "MEM_guardedalloc.h"
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#include "BLI_linklist.h" /* linked list: LinkNode struct and functions */
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#include "DNA_object_types.h"
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#include "DNA_space_types.h" /* for FILE_MAXDIR, FILE_MAXFILE */
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#include "Blender.h"
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extern char bprogname[]; /* argv[0] from creator.c */
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/* this makes sure BLI_gethome() returns a path with '.blender' appended
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* Besides, this function now either returns userhome/.blender (if it exists)
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* or blenderInstallDir/.blender/ otherwise (can also be cvs dir).
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* If append_scriptsdir is non NULL, "scripts/" is appended to the dir, to
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* get the path to the scripts folder ("release/scripts/" if cvs dir).
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* Finally, if all else fails BLI_gethome() is returned
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* (or NULL if append_scriptdir != 0).
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*/
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char *bpy_gethome(int append_scriptsdir)
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{
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static char homedir[FILE_MAXDIR];
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static char scriptsdir[FILE_MAXDIR];
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char tmpdir[FILE_MAXDIR];
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char bprogdir[FILE_MAXDIR];
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char *s;
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int i;
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if (append_scriptsdir) {
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if (scriptsdir[0] != '\0')
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return scriptsdir;
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}
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else if (homedir[0] != '\0')
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return homedir;
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/* BLI_gethome() can return NULL if env vars are not set */
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s = BLI_gethome();
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if( !s ) /* bail if no $HOME */
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{
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printf("$HOME is NOT set\n");
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return NULL;
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}
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if( strstr( s, ".blender" ) )
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PyOS_snprintf( homedir, FILE_MAXDIR, s );
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else
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BLI_make_file_string( "/", homedir, s, ".blender" );
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/* if userhome/.blender/ exists, return it */
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if( BLI_exists( homedir ) ) {
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if (append_scriptsdir) {
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BLI_make_file_string("/", scriptsdir, homedir, "scripts");
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if (BLI_exists (scriptsdir)) return scriptsdir;
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}
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else return homedir;
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}
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else homedir[0] = '\0';
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/* if either:
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* no homedir was found or
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* append_scriptsdir = 1 but there's no scripts/ inside homedir,
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* use argv[0] (bprogname) to get .blender/ in
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* Blender's installation dir */
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s = BLI_last_slash( bprogname );
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i = s - bprogname + 1;
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PyOS_snprintf( bprogdir, i, "%s", bprogname );
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/* using tmpdir to preserve homedir (if) found above:
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* the ideal is to have a home dir with scripts dir inside
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* it, but if that isn't available, it's possible to
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* have a 'broken' home dir somewhere and a scripts dir in the
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* cvs sources */
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BLI_make_file_string( "/", tmpdir, bprogdir, ".blender" );
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if (BLI_exists(tmpdir)) {
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if (append_scriptsdir) {
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BLI_make_file_string("/", scriptsdir, tmpdir, "scripts");
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if (BLI_exists(scriptsdir)) {
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PyOS_snprintf(homedir, FILE_MAXDIR, "%s", tmpdir);
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return scriptsdir;
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}
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else {
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homedir[0] = '\0';
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scriptsdir[0] = '\0';
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}
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}
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else return homedir;
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}
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/* last try for scripts dir: blender in cvs dir, scripts/ inside release/: */
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if (append_scriptsdir) {
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BLI_make_file_string("/", scriptsdir, bprogdir, "release/scripts");
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if (BLI_exists(scriptsdir)) return scriptsdir;
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else scriptsdir[0] = '\0';
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}
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return NULL;
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}
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/* PyDrivers */
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/*
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* Pydrivers are Blender Ipo Drivers defined by Python expressions.
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* We need to tell DAG about objects used in these expressions, so we
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* eval each expression to collect the ob refs. in it.
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*/
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/* these are checked for example in Object.c: M_Object_Get (Object.Get())
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* to collect the refs. */
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static int pydriver_running = 0;
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int bpy_during_pydriver(void)
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{
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return pydriver_running;
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}
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void bpy_pydriver_running(int state)
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{
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pydriver_running = state;
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}
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/* Obj references are collected in this extern linked list: */
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LinkNode *bpy_pydriver_oblist = NULL;
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void bpy_pydriver_freeList(void)
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{
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BLI_linklist_free(bpy_pydriver_oblist, NULL);
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bpy_pydriver_oblist = NULL;
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}
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void bpy_pydriver_appendToList(struct Object *ob)
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{
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LinkNode *ln = bpy_pydriver_oblist;
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/* check that the expression is not referencing its owner object */
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/* XXX COMMENTED OUT TO TEST IF WE REALLY NEED TO IMPOSE THIS RESTRICTION
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if (ln && ln->link) {
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if (ob == (Object *)ln->link) {
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PyErr_SetString(PyExc_AttributeError,
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"Python driver expression can't reference its own object");
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return;
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}
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else
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ln = ln->next;
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}
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*/
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while (ln) { /* is ob already in list? ... */
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if (ob == (Object *)ln->link)
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break;
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ln = ln->next;
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}
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if (!ln) /* ... not yet, append it */
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BLI_linklist_append(&bpy_pydriver_oblist, (void *)ob);
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return;
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}
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/* Get an array from our linked list of objs referenced in the
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* current pydriver. The first node in the list is discarded,
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* since it is the actual pydriver owner, which shouldn't be
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* passed to the depsgraph (no self references). */
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struct Object **bpy_pydriver_obArrayFromList(void)
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{
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Object **obarray = NULL;
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if (bpy_pydriver_oblist) {
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int i;
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short len = BLI_linklist_length(bpy_pydriver_oblist);
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if (len > 1) {
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obarray = (Object **)MEM_mallocN(sizeof(Object*)*len,
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"pydriver array");
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if (obarray) {
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LinkNode *ln = bpy_pydriver_oblist;
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ln = ln->next; /* skip first ob, which is the pydriver owner */
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for (i = 0; i < len-1; i++) {
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obarray[i] = (Object *)ln->link;
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ln = ln->next;
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}
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obarray[len-1] = NULL; /* NULL-terminated array */
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}
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}
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bpy_pydriver_freeList();
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}
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return obarray;
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}
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