ticket django-extensions#180 import error _make_writeable does not ex…

…ist in django 1.4-beta

the _make_writeable function has been inlined into TemplateCommand class
in the django 1.4 and up. we should probably rewrite the commands to
use the TemplateCommand class instead of duplicating code. But for now
I moved the _make_writeable function to django_extensions.management.utils
so that the existing commands keep working with Django 1.4 and up.

django_extensions/management/commands/create_app.py

@@ -3,10 +3,11 @@
 import django_extensions
 from django.conf import settings
 from django.db import connection
-from django.core.management.base import CommandError, LabelCommand, _make_writeable
+from django.core.management.base import CommandError, LabelCommand
 from django.template import Template, Context
 from django_extensions.settings import REPLACEMENTS
 from django_extensions.utils.dia2django import dia2django
+from django_extensions.management.utils import _make_writeable
 from optparse import make_option
 
 

django_extensions/management/commands/create_command.py

@@ -1,5 +1,6 @@
 import os
-from django.core.management.base import CommandError, AppCommand, _make_writeable
+from django.core.management.base import CommandError, AppCommand
+from django_extensions.management.utils import _make_writeable
 from optparse import make_option
 
 

django_extensions/management/commands/create_jobs.py

@@ -1,6 +1,7 @@
 import os
 import sys
-from django.core.management.base import CommandError, AppCommand, _make_writeable
+from django.core.management.base import CommandError, AppCommand
+from django_extensions.management.utils import _make_writeable
 
 
 class Command(AppCommand):

django_extensions/management/utils.py

@@ -1,8 +1,25 @@
 from django.conf import settings
 import os
+import sys
 
 
 def get_project_root():
     """ get the project root directory """
     settings_mod = __import__(settings.SETTINGS_MODULE, {}, {}, [''])
     return os.path.dirname(os.path.abspath(settings_mod.__file__))
+
+def _make_writeable(filename):
+    """
+    Make sure that the file is writeable. Useful if our source is
+    read-only.
+
+    """
+    import stat
+    if sys.platform.startswith('java'):
+        # On Jython there is no os.access()
+        return
+    if not os.access(filename, os.W_OK):
+        st = os.stat(filename)
+        new_permissions = stat.S_IMODE(st.st_mode) | stat.S_IWUSR
+        os.chmod(filename, new_permissions)
+