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/*
* $Id: EXPP_interface.c 7338 2006-04-30 16:22:31Z ianwill $
*
* ***** 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.
*
* This is a new part of Blender.
*
* Contributor(s): Michel Selten
*
* ***** END GPL/BL DUAL LICENSE BLOCK *****
*/
#include <Python.h>
#include "EXPP_interface.h"
#include "BLI_blenlib.h"
#include "MEM_guardedalloc.h"
#include "BLI_linklist.h" /* linked list: LinkNode struct and functions */
#include "DNA_object_types.h"
#include "DNA_space_types.h" /* for FILE_MAXDIR, FILE_MAXFILE */
#include "Blender.h"
extern char bprogname[]; /* argv[0] from creator.c */
/* this makes sure BLI_gethome() returns a path with '.blender' appended
* Besides, this function now either returns userhome/.blender (if it exists)
* or blenderInstallDir/.blender/ otherwise (can also be cvs dir).
* If append_scriptsdir is non NULL, "scripts/" is appended to the dir, to
* get the path to the scripts folder ("release/scripts/" if cvs dir).
* Finally, if all else fails BLI_gethome() is returned
* (or NULL if append_scriptdir != 0).
*/
char *bpy_gethome(int append_scriptsdir)
{
static char homedir[FILE_MAXDIR];
static char scriptsdir[FILE_MAXDIR];
char tmpdir[FILE_MAXDIR];
char bprogdir[FILE_MAXDIR];
char *s;
int i;
if (append_scriptsdir) {
if (scriptsdir[0] != '\0')
return scriptsdir;
}
else if (homedir[0] != '\0')
return homedir;
/* BLI_gethome() can return NULL if env vars are not set */
s = BLI_gethome();
if( !s ) /* bail if no $HOME */
{
printf("$HOME is NOT set\n");
return NULL;
}
if( strstr( s, ".blender" ) )
PyOS_snprintf( homedir, FILE_MAXDIR, s );
else
BLI_make_file_string( "/", homedir, s, ".blender" );
/* if userhome/.blender/ exists, return it */
if( BLI_exists( homedir ) ) {
if (append_scriptsdir) {
BLI_make_file_string("/", scriptsdir, homedir, "scripts");
if (BLI_exists (scriptsdir)) return scriptsdir;
}
else return homedir;
}
else homedir[0] = '\0';
/* if either:
* no homedir was found or
* append_scriptsdir = 1 but there's no scripts/ inside homedir,
* use argv[0] (bprogname) to get .blender/ in
* Blender's installation dir */
s = BLI_last_slash( bprogname );
i = s - bprogname + 1;
PyOS_snprintf( bprogdir, i, "%s", bprogname );
/* using tmpdir to preserve homedir (if) found above:
* the ideal is to have a home dir with scripts dir inside
* it, but if that isn't available, it's possible to
* have a 'broken' home dir somewhere and a scripts dir in the
* cvs sources */
BLI_make_file_string( "/", tmpdir, bprogdir, ".blender" );
if (BLI_exists(tmpdir)) {
if (append_scriptsdir) {
BLI_make_file_string("/", scriptsdir, tmpdir, "scripts");
if (BLI_exists(scriptsdir)) {
PyOS_snprintf(homedir, FILE_MAXDIR, "%s", tmpdir);
return scriptsdir;
}
else {
homedir[0] = '\0';
scriptsdir[0] = '\0';
}
}
else return homedir;
}
/* last try for scripts dir: blender in cvs dir, scripts/ inside release/: */
if (append_scriptsdir) {
BLI_make_file_string("/", scriptsdir, bprogdir, "release/scripts");
if (BLI_exists(scriptsdir)) return scriptsdir;
else scriptsdir[0] = '\0';
}
return NULL;
}
/* PyDrivers */
/*
* Pydrivers are Blender Ipo Drivers defined by Python expressions.
* We need to tell DAG about objects used in these expressions, so we
* eval each expression to collect the ob refs. in it.
*/
/* these are checked for example in Object.c: M_Object_Get (Object.Get())
* to collect the refs. */
static int pydriver_running = 0;
int bpy_during_pydriver(void)
{
return pydriver_running;
}
void bpy_pydriver_running(int state)
{
pydriver_running = state;
}
/* Obj references are collected in this extern linked list: */
LinkNode *bpy_pydriver_oblist = NULL;
void bpy_pydriver_freeList(void)
{
BLI_linklist_free(bpy_pydriver_oblist, NULL);
bpy_pydriver_oblist = NULL;
}
void bpy_pydriver_appendToList(struct Object *ob)
{
LinkNode *ln = bpy_pydriver_oblist;
/* check that the expression is not referencing its owner object */
/* XXX COMMENTED OUT TO TEST IF WE REALLY NEED TO IMPOSE THIS RESTRICTION
if (ln && ln->link) {
if (ob == (Object *)ln->link) {
PyErr_SetString(PyExc_AttributeError,
"Python driver expression can't reference its own object");
return;
}
else
ln = ln->next;
}
*/
while (ln) { /* is ob already in list? ... */
if (ob == (Object *)ln->link)
break;
ln = ln->next;
}
if (!ln) /* ... not yet, append it */
BLI_linklist_append(&bpy_pydriver_oblist, (void *)ob);
return;
}
/* Get an array from our linked list of objs referenced in the
* current pydriver. The first node in the list is discarded,
* since it is the actual pydriver owner, which shouldn't be
* passed to the depsgraph (no self references). */
struct Object **bpy_pydriver_obArrayFromList(void)
{
Object **obarray = NULL;
if (bpy_pydriver_oblist) {
int i;
short len = BLI_linklist_length(bpy_pydriver_oblist);
if (len > 1) {
obarray = (Object **)MEM_mallocN(sizeof(Object*)*len,
"pydriver array");
if (obarray) {
LinkNode *ln = bpy_pydriver_oblist;
ln = ln->next; /* skip first ob, which is the pydriver owner */
for (i = 0; i < len-1; i++) {
obarray[i] = (Object *)ln->link;
ln = ln->next;
}
obarray[len-1] = NULL; /* NULL-terminated array */
}
}
bpy_pydriver_freeList();
}
return obarray;
}
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