1 # -*- coding: iso-8859-1 -*-
2 # Copyright (C) 2007-2011 CEA/DEN, EDF R&D, OPEN CASCADE
4 # Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
5 # CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
7 # This library is free software; you can redistribute it and/or
8 # modify it under the terms of the GNU Lesser General Public
9 # License as published by the Free Software Foundation; either
10 # version 2.1 of the License.
12 # This library is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 # Lesser General Public License for more details.
17 # You should have received a copy of the GNU Lesser General Public
18 # License along with this library; if not, write to the Free Software
19 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 # See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
24 # File : salome_shared_modules.py
28 This module with help of import_hook and *_shared_modules
29 filters imports when using the embedded Python interpretor.
31 Some imports can't be done more than once.
32 This is related to the multi study feature that is implemented
33 by using the Python multi interpreter feature.
34 Some modules register objects or classes by calling modules
35 implemented in C. These operations can't be done multiple times.
36 So it's very important to control these imports.
39 - PyQt : import qt calls a C module to register classes
40 - OmniORB : import *_idl calls a C module to register CORBA interfaces
43 - First : the module salome_shared_modules is imported by main Python interpretor.
44 It will keep a dictionnary and a list that are shared among all
45 the subinterpretors and imports import_hook module that replaces
46 the standard import mechanism par one that prevents more than one import
47 for some modules identified by name (call register_name) or by a
48 validator (call register_pattern).
50 Calls to register_name and register_pattern are done in modules named *_shared_modules
51 that could be found in the path SALOMEPATH
57 # shared_imported, patterns, register_name, register_pattern
58 # will be shared by all Python sub interpretors
59 from import_hook import patterns
60 from import_hook import register_name
61 from import_hook import register_pattern
63 register_name("salome_shared_modules")
64 register_name("omniORB")
65 register_name("omnipatch")
66 register_pattern(lambda(x):x.endswith("_idl"))
67 register_pattern(lambda(x):x.startswith("omniORB."))
69 from omnipatch import shared_imported
70 shared_imported.update(import_hook.shared_imported)
71 import_hook.shared_imported=shared_imported
73 # Get the SALOMEPATH if set or else use KERNEL_ROOT_DIR that should be set.
74 salome_path=os.environ.get("SALOMEPATH",os.getenv("KERNEL_ROOT_DIR"))
78 # Import all *_shared_modules in the path and store them in list_modules
80 if sys.platform == "win32":
82 path=salome_path.split(splitter)
86 # Import all *_shared_modules in rep
87 for f in glob.glob(os.path.join(rep,libdir,"python"+sys.version[:3],"site-packages","salome","shared_modules","*_shared_modules.py")):
89 name=os.path.splitext(os.path.basename(f))[0]
91 #print name + " REGISTERED"
93 #print name + " IMPORTED"
94 list_modules.append(m)
96 print "Exception during register and import shared module"
100 # If shared modules have been imported before installing import mechanism
101 # we add them to shared_imported
103 for name,module in sys.modules.items():
104 if module and import_hook.is_shared(name) and not shared_imported.has_key(name):
105 #print "Module shared added to shared_imported: ",name
106 shared_imported[name]=module