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##########################################################################
#
# Package.py: store the Package object information.
#
# Python-CDD is a library to make easier to build applications to
# Custom Debian Distributions.
# See http://projetos.ossystems.com.br/python-cdd for more information.
#
# ====================================================================
# Copyright (c) 2002-2005 O.S. Systems. All rights reserved.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution.
#
#########################################################################
# Authors: Otavio Salvador <otavio@ossystems.com.br>
# Nat Budin <natb@brandeis.edu>
# Free Ekanayaka <free@agnula.org>
"""
Classes to represent source and binary packages
"""
import apt_pkg
import logging
log = logging.getLogger("cdd.FileSystem")
class Package:
"""
This class encapsulates a binary debian package as represented in an apt
Packages file.
"""
def __init__(self, section):
log.debug("Package: constructor")
self._fields = {}
self._fields.update(section)
# Handle dependencie fields
for field in ('Suggests', 'Recommends',
'Depends', 'Pre-Depends', 'Conflicts'):
if self._fields.has_key(field):
self._fields[field + "-orig"] = self._fields[field]
self._fields[field] = apt_pkg.ParseDepends(self._fields[field])
if self._fields.has_key('Provides'):
self._fields['Provides-orig'] = self._fields['Provides']
self._fields['Provides'] = self._fields['Provides'].split(', ')
# Point to the functions
self.has_key = self._fields.has_key
self.keys = self._fields.keys
self.__getitem__ = self._fields.get
def dump(self):
"""
Return a string containing the package stanza
"""
log.debug("Package.dump")
keys = self.keys()
stanza = ""
for field in ['Package', 'Priority', 'Section', 'Installed-Size',
'Maintainer', 'Architecture', 'Version', 'Replaces',
'Provides-orig', 'Depends-orig', 'Suggests-orig',
'Conflicts-orig', 'Filename', 'Size', 'MD5sum',
'Description', 'Tag']:
if self._fields.has_key(field):
if field.endswith('-orig'):
stanza += field[:-5] + ": " + self._fields[field] + "\n"
else:
stanza += field + ": " + self._fields[field] + "\n"
keys.remove(field)
return stanza + "\n"
class SourcePackage(Package):
"""
This class encapsulates a debian source package as represented in an apt
Sources file.
The class transforms the `Files` field provided by the Sources file into a
list of dictionaries with three fields: `name`, `md5sum` and `size`.
"""
def __init__(self, section):
log.debug("SoucePackage: constructor")
# First, we load the default information
Package.__init__(self, section)
# Handle Build-Depends field
for field in ('Build-Depends', 'Build-Depends-Indep',
'Build-Conflicts', 'Build-Conflicts-Indep'):
if self._fields.has_key(field):
self._fields[field + "-orig"] = self._fields[field]
self._fields[field] = \
apt_pkg.ParseSrcDepends(self._fields[field])
for field in ('Binary', 'Uploaders'):
if self._fields.has_key(field):
self._fields[field + "-orig"] = self._fields[field]
self._fields[field] = self._fields[field].split(', ')
# Now, let's do the trick ;-)
self._fields['Files-orig'] = "\n " + self._fields['Files']
files = self._fields['Files'].split(' ')
self._fields['Files'] = []
for i in range(0, len(files), 3):
tmpdict = {}
tmpdict['md5sum'] = files[i]
tmpdict['size'] = files[i+1]
if files[i+2][len(files[i+2])-1:len(files[i+2])] == "\n":
tmpdict['name'] = files[i+2][:-1]
else:
tmpdict['name'] = files[i+2]
self._fields['Files'].append(tmpdict)
def dump(self):
"""
Return a string containing the package stanza
"""
log.debug("SourcePackage.dump")
keys = self.keys()
stanza = ""
for field in ['Package', 'Binary-orig', 'Version',
'Priority', 'Section', 'Maintainer',
'Build-Depends-orig', 'Build-Depends-Indep-orig',
'Build-Conflicts-orig', 'Build-Conflicts-Indep-orig',
'Architecture', 'Standards-Version', 'Format',
'Directory', 'Files-orig', 'Uploaders-orig']:
if self._fields.has_key(field):
if field.endswith('-orig') and field != 'Files-orig':
stanza += field[:-5] + ": " + self._fields[field] + "\n"
elif field == 'Files-orig':
stanza += field[:-5] + ":" + self._fields[field] + "\n"
else:
stanza += field + ": " + self._fields[field] + "\n"
keys.remove(field)
return stanza + "\n"
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