blender-archive/source/blender/python/api2_2x/EXPP_interface.c

/* 
 * $Id$
 *
 * ***** 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 "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;
}