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# Copyright (C) 2005-2012 Aaron Bentley <abentley@panoramicfeedback.com>
# Chris Ball <cjb@laptop.org>
# Gianluca Montecchi <gian@grys.it>
# Marien Zwart <marien.zwart@gmail.com>
# W. Trevor King <wking@drexel.edu>
#
# This file is part of Bugs Everywhere.
#
# Bugs Everywhere 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.
#
# Bugs Everywhere 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
# Bugs Everywhere. If not, see <http://www.gnu.org/licenses/>.
"""
Allow simple listing and loading of the various becommands and libbe
submodules (i.e. "plugins").
"""
import os
import os.path
import sys
import zipfile
_PLUGIN_PATH = os.path.realpath(
os.path.dirname(
os.path.dirname(
os.path.dirname(__file__))))
if _PLUGIN_PATH not in sys.path:
sys.path.append(_PLUGIN_PATH)
def import_by_name(modname):
"""
>>> mod = import_by_name('libbe.bugdir')
>>> 'BugDir' in dir(mod)
True
>>> import_by_name('libbe.highly_unlikely')
Traceback (most recent call last):
...
ImportError: No module named highly_unlikely
"""
module = __import__(modname)
components = modname.split('.')
for comp in components[1:]:
module = getattr(module, comp)
return module
def zip_listdir(path, components):
"""Lists items in a directory contained in a zip file
"""
dirpath = '/'.join(components)
with zipfile.ZipFile(path, 'r') as f:
return [os.path.relpath(f, dirpath) for f in f.namelist()
if f.startswith(dirpath)]
def modnames(prefix):
"""
>>> 'list' in [n for n in modnames('libbe.command')]
True
>>> 'plugin' in [n for n in modnames('libbe.util')]
True
"""
components = prefix.split('.')
egg = os.path.isfile(_PLUGIN_PATH) # are we inside a zip archive (egg)?
if egg:
modfiles = zip_listdir(_PLUGIN_PATH, components)
else:
modfiles = os.listdir(os.path.join(_PLUGIN_PATH, *components))
# normalize .py/.pyc extensions and sort
base_ext = [os.path.splitext(f) for f in modfiles]
modfiles = sorted(set(
base + '.py' for base,ext in base_ext if ext in ['.py', '.pyc']))
for modfile in modfiles:
if modfile.startswith('.') or not modfile:
continue # the occasional emacs temporary file or .* file
if modfile.endswith('.py') and modfile != '__init__.py':
yield modfile[:-3]
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