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/*
* $Id: bpy_internal_import.c 21094 2009-06-23 00:09:26Z gsrb3d $
* ***** BEGIN GPL 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.
*
* 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): Willian P. Germano
*
* ***** END GPL LICENSE BLOCK *****
*/
#include "bpy_internal_import.h"
#include "DNA_text_types.h"
#include "DNA_ID.h"
#include "MEM_guardedalloc.h"
#include "BKE_text.h" /* txt_to_buf */
#include "BKE_main.h"
static Main *bpy_import_main= NULL;
static void free_compiled_text(Text *text)
{
if(text->compiled) {
Py_DECREF(( PyObject * )text->compiled);
}
text->compiled= NULL;
}
struct Main *bpy_import_main_get(void)
{
return bpy_import_main;
}
void bpy_import_main_set(struct Main *maggie)
{
bpy_import_main= maggie;
}
PyObject *bpy_text_import( Text *text )
{
char *buf = NULL;
char modulename[24];
int len;
if( !text->compiled ) {
buf = txt_to_buf( text );
text->compiled = Py_CompileString( buf, text->id.name+2, Py_file_input );
MEM_freeN( buf );
if( PyErr_Occurred( ) ) {
PyErr_Print( );
PyErr_Clear( );
PySys_SetObject("last_traceback", NULL);
free_compiled_text( text );
return NULL;
}
}
len= strlen(text->id.name+2) - 3;
strncpy(modulename, text->id.name+2, len);
return PyImport_ExecCodeModule(modulename, text->compiled);
}
PyObject *bpy_text_import_name( char *name, int *found )
{
Text *text;
char txtname[22]; /* 21+NULL */
int namelen = strlen( name );
//XXX Main *maggie= bpy_import_main ? bpy_import_main:G.main;
Main *maggie= bpy_import_main;
*found= 0;
if(!maggie) {
printf("ERROR: bpy_import_main_set() was not called before running python. this is a bug.\n");
return NULL;
}
if (namelen>21-3) return NULL; /* we know this cant be importable, the name is too long for blender! */
memcpy( txtname, name, namelen );
memcpy( &txtname[namelen], ".py", 4 );
for(text = maggie->text.first; text; text = text->id.next) {
if( !strcmp( txtname, text->id.name+2 ) )
break;
}
if( !text )
return NULL;
else
*found = 1;
return bpy_text_import(text);
}
/*
* find in-memory module and recompile
*/
PyObject *bpy_text_reimport( PyObject *module, int *found )
{
Text *text;
const char *txtname;
const char *name;
char *buf = NULL;
//XXX Main *maggie= bpy_import_main ? bpy_import_main:G.main;
Main *maggie= bpy_import_main;
if(!maggie) {
printf("ERROR: bpy_import_main_set() was not called before running python. this is a bug.\n");
return NULL;
}
*found= 0;
/* get name, filename from the module itself */
txtname = PyModule_GetFilename( module );
name = PyModule_GetName( module );
if( !txtname || !name)
return NULL;
/* look up the text object */
text = ( Text * ) & ( maggie->text.first );
while( text ) {
if( !strcmp( txtname, text->id.name+2 ) )
break;
text = text->id.next;
}
/* uh-oh.... didn't find it */
if( !text )
return NULL;
else
*found = 1;
/* if previously compiled, free the object */
/* (can't see how could be NULL, but check just in case) */
if( text->compiled ){
Py_DECREF( (PyObject *)text->compiled );
}
/* compile the buffer */
buf = txt_to_buf( text );
text->compiled = Py_CompileString( buf, text->id.name+2, Py_file_input );
MEM_freeN( buf );
/* if compile failed.... return this error */
if( PyErr_Occurred( ) ) {
PyErr_Print( );
PyErr_Clear( );
PySys_SetObject("last_traceback", NULL);
free_compiled_text( text );
return NULL;
}
/* make into a module */
return PyImport_ExecCodeModule( (char *)name, text->compiled );
}
static PyObject *blender_import( PyObject * self, PyObject * args, PyObject * kw)
{
PyObject *exception, *err, *tb;
char *name;
int found= 0;
PyObject *globals = NULL, *locals = NULL, *fromlist = NULL;
PyObject *newmodule;
//PyObject_Print(args, stderr, 0);
int dummy_val; /* what does this do?*/
static char *kwlist[] = {"name", "globals", "locals", "fromlist", "level", 0};
if( !PyArg_ParseTupleAndKeywords( args, kw, "s|OOOi:bpy_import_meth", kwlist,
&name, &globals, &locals, &fromlist, &dummy_val) )
return NULL;
/* import existing builtin modules or modules that have been imported alredy */
newmodule = PyImport_ImportModuleEx( name, globals, locals, fromlist );
if(newmodule)
return newmodule;
PyErr_Fetch( &exception, &err, &tb ); /* get the python error incase we cant import as blender text either */
/* importing from existing modules failed, see if we have this module as blender text */
newmodule = bpy_text_import_name( name, &found );
if( newmodule ) {/* found module as blender text, ignore above exception */
PyErr_Clear( );
Py_XDECREF( exception );
Py_XDECREF( err );
Py_XDECREF( tb );
/* printf( "imported from text buffer...\n" ); */
}
else if (found==1) { /* blender text module failed to execute but was found, use its error message */
Py_XDECREF( exception );
Py_XDECREF( err );
Py_XDECREF( tb );
return NULL;
}
else {
/* no blender text was found that could import the module
* rause the original error from PyImport_ImportModuleEx */
PyErr_Restore( exception, err, tb );
}
return newmodule;
}
/*
* our reload() module, to handle reloading in-memory scripts
*/
static PyObject *blender_reload( PyObject * self, PyObject * args )
{
PyObject *exception, *err, *tb;
PyObject *module = NULL;
PyObject *newmodule = NULL;
int found= 0;
/* check for a module arg */
if( !PyArg_ParseTuple( args, "O:bpy_reload_meth", &module ) )
return NULL;
/* try reimporting from file */
newmodule = PyImport_ReloadModule( module );
if( newmodule )
return newmodule;
/* no file, try importing from memory */
PyErr_Fetch( &exception, &err, &tb ); /*restore for probable later use */
newmodule = bpy_text_reimport( module, &found );
if( newmodule ) {/* found module as blender text, ignore above exception */
PyErr_Clear( );
Py_XDECREF( exception );
Py_XDECREF( err );
Py_XDECREF( tb );
/* printf( "imported from text buffer...\n" ); */
}
else if (found==1) { /* blender text module failed to execute but was found, use its error message */
Py_XDECREF( exception );
Py_XDECREF( err );
Py_XDECREF( tb );
return NULL;
}
else {
/* no blender text was found that could import the module
* rause the original error from PyImport_ImportModuleEx */
PyErr_Restore( exception, err, tb );
}
return newmodule;
}
PyMethodDef bpy_import_meth[] = { {"bpy_import_meth", (PyCFunction)blender_import, METH_VARARGS | METH_KEYWORDS, "blenders import"} };
PyMethodDef bpy_reload_meth[] = { {"bpy_reload_meth", (PyCFunction)blender_reload, METH_VARARGS, "blenders reload"} };
/* Clear user modules.
* This is to clear any modules that could be defined from running scripts in blender.
*
* Its also needed for the BGE Python api so imported scripts are not used between levels
*
* This clears every modules that has a __file__ attribute (is not a builtin)
*
* Note that clearing external python modules is important for the BGE otherwise
* it wont reload scripts between loading different blend files or while making the game.
* - use 'clear_all' arg in this case.
*
* Since pythons bultins include a full path even for win32.
* even if we remove a python module a reimport will bring it back again.
*/
#if 0 // not used anymore but may still come in handy later
#if defined(WIN32) || defined(WIN64)
#define SEPSTR "\\"
#else
#define SEPSTR "/"
#endif
void bpy_text_clear_modules(int clear_all)
{
PyObject *modules= PySys_GetObject("modules");
char *fname;
char *file_extension;
/* looping over the dict */
PyObject *key, *value;
int pos = 0;
/* new list */
PyObject *list;
if (modules==NULL)
return; /* should never happen but just incase */
list= PyList_New(0);
/* go over sys.modules and remove anything with a
* sys.modukes[x].__file__ thats ends with a .py and has no path
*/
while (PyDict_Next(modules, &pos, &key, &value)) {
fname= PyModule_GetFilename(value);
if(fname) {
if (clear_all || ((strstr(fname, SEPSTR))==0)) { /* no path ? */
file_extension = strstr(fname, ".py");
if(file_extension && (*(file_extension + 3) == '\0' || *(file_extension + 4) == '\0')) { /* .py or pyc extension? */
/* now we can be fairly sure its a python import from the blendfile */
PyList_Append(list, key); /* free'd with the list */
}
}
}
else {
PyErr_Clear();
}
}
/* remove all our modules */
for(pos=0; pos < PyList_Size(list); pos++) {
/* PyObject_Print(key, stderr, 0); */
key= PyList_GET_ITEM(list, pos);
PyDict_DelItem(modules, key);
}
Py_DECREF(list); /* removes all references from append */
}
#endif
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