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# Copyright (C) 2011 Canonical
#
# Authors:
# Matthew McGowan
# Michael Vogt
#
# 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; version 3.
#
# 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.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
from __future__ import absolute_import
import os
import logging
LOG=logging.getLogger(__name__)
class CmdFinder(object):
""" helper class that can find binaries in packages """
# standard ubuntu PATH
PATH = [ "/usr/local/sbin",
"/usr/local/bin",
"/usr/sbin",
"/usr/bin",
"/sbin",
"/bin",
"/usr/games"
]
def __init__(self, cache):
self._cache = cache
return
def _is_exec(self, f):
return (os.path.dirname(f) in self.PATH and
os.path.exists(f) and
not os.path.isdir(f) and
os.access(f, os.X_OK))
def _get_exec_candidates(self, pkg):
return filter(self._is_exec, pkg.installed_files)
def _find_alternatives_for_cmds(self, cmds):
alternatives = set()
root = "/etc/alternatives"
for p in os.listdir(root):
if os.path.realpath(os.path.join(root, p)) in cmds:
alternatives.add(p)
return alternatives
def find_cmds_from_pkgname(self, pkgname):
""" find the executables binaries for a given package """
try:
pkg = self._cache[pkgname]
except KeyError:
LOG.debug("can't find %s" % pkgname)
return []
if not pkg.is_installed:
return []
cmds = self._get_exec_candidates(pkg)
cmds += self._find_alternatives_for_cmds(cmds)
return sorted([os.path.basename(p) for p in cmds])
#~
#~ class CmdFinderWidget(gtk.VBox, CmdFinder):
#~
#~ def __init__(self, cache):
#~ CmdFinder.__init__(self, cache)
#~ return
#~
#~ def cmds_from_pkgname(self, pkgname):
#~ cmds = CmdFinder.cmds_from_pkgname(self, pkgname)
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