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#!/usr/bin/env python
#
# Copyright (c) 2010 Fabian Affolter, Bernewireless.net.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
# * Redistributions of source code must retain the above copyright notice, this
# list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
# * Neither the name of the Bernewireless nor the names of its contributors
# may be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# Author: Fabian Affolter <fabian at bernewireless.net>
#
import yum
import os
import sys
from lxml import etree
from optparse import OptionParser
__author__ = 'Fabian Affolter <fabian@bernewireless.net>'
__version__ = '0.1'
def retrievePackages():
"""Getting the installed packages with yum."""
yb = yum.YumBase()
yb.conf.cache = os.geteuid() != 1
pl = yb.doPackageLists('installed')
pkglist = []
for pkg in sorted(pl.installed):
pkgdata = pkg.name, pkg.version
pkglist.append(pkgdata)
return pkglist
def parse_command_line_parameters():
"""Parses command line arguments."""
usage = "usage: %prog [options]"
version = 'Version: %prog ' + __version__
parser = OptionParser(usage, version=version)
parser.add_option("-s", "--show", action="store_true",
help="Prints the result to STOUT")
parser.add_option("-v", "--pkgversion", action="store_true",
help="Include Package version")
parser.add_option("-f", "--filename", dest="filename",
type="string",
metavar="FILE", default="packages.xml",
help="Write the output to an XML FILE" )
(options, args) = parser.parse_args()
num_args = 1
return options, args
def indent(elem, level=0):
"""Helps clean up the XML."""
# Stolen from http://effbot.org/zone/element-lib.htm
i = "\n" + level*" "
if len(elem):
if not elem.text or not elem.text.strip():
elem.text = i + " "
for e in elem:
indent(e, level+1)
if not e.tail or not e.tail.strip():
e.tail = i + " "
if not e.tail or not e.tail.strip():
e.tail = i
else:
if level and (not elem.tail or not elem.tail.strip()):
elem.tail = i
def transformXML():
"""Transform the package list to an XML file."""
packagelist = retrievePackages()
root = etree.Element("PackageList")
for i,j in packagelist:
root.append( etree.Element("Package", name = i, version = j) )
#Print the content
#print(etree.tostring(root, pretty_print=True))
tree = etree.ElementTree(root)
return tree
def main():
options, args = parse_command_line_parameters()
filename = options.filename
packagelist = transformXML()
if options.show == True:
tree = etree.parse(filename)
for node in tree.findall("//Package"):
print node.attrib["name"]
indent(packagelist.getroot())
packagelist.write(filename, encoding="utf-8")
if options.pkgversion == True:
tree = etree.parse(filename)
for node in tree.findall("//Package"):
print "%s-%s" % (node.attrib["name"], node.attrib["version"])
#FIXME : This should be changed to the standard way of optparser
#FIXME : Make an option available to strip the version number of the pkg
if options.pkgversion == None and options.show == None:
indent(packagelist.getroot())
packagelist.write(filename, encoding="utf-8")
if __name__ == "__main__":
main()
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