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#!/usr/bin/python
# -*- coding: utf-8 -*-
#################################################################################
# MAKE-DOT-CONF HANDLING
#################################################################################
# File: makeconf.py
#
# Handles modifications to /etc/make.conf
#
# Copyright:
# (c) 2005 - 2009 Gunnar Wrobel
# Distributed under the terms of the GNU General Public License v2
#
# Author(s):
# Gunnar Wrobel <wrobel@gentoo.org>
#
import os
import codecs
import re
from layman.utils import path
#===============================================================================
#
# Helper class MakeConf
#
#-------------------------------------------------------------------------------
class MakeConf:
'''
Handles modifications to /etc/make.conf
Check that an add/remove cycle does not modify the make.conf:
>>> import hashlib
>>> write = os.tmpnam()
>>> here = os.path.dirname(os.path.realpath(__file__))
>>> config = {'local_list' :
... here + '/tests/testfiles/global-overlays.xml',
... 'make_conf' : here + '/tests/testfiles/make.conf',
... 'nocheck' : True,
... 'storage' : '/var/lib/layman',
... 'quietness':3}
>>> b = DB(config)
>>> a = MakeConf(config, b.overlays)
>>> o_md5 = str(hashlib.md5(open(here + '/tests/testfiles/make.conf').read()).hexdigest())
>>> a.path = write
>>> a.add(b.overlays['wrobel-stable'])
>>> [i.name for i in a.overlays]
[u'wrobel-stable', u'wrobel-stable']
>>> a.add(b.overlays['wrobel'])
>>> [i.name for i in a.overlays]
[u'wrobel', u'wrobel-stable', u'wrobel-stable']
>>> a.delete(b.overlays['wrobel-stable'])
>>> [i.name for i in a.overlays]
[u'wrobel']
>>> a.add(b.overlays['wrobel-stable'])
>>> [i.name for i in a.overlays]
[u'wrobel', u'wrobel-stable']
>>> a.delete(b.overlays['wrobel'])
>>> n_md5 = str(hashlib.md5(open(write).read()).hexdigest())
>>> o_md5 == n_md5
True
>>> os.unlink(write)
'''
my_re = re.compile('PORTDIR_OVERLAY\s*=\s*"([^"]*)"')
def __init__(self, config, overlays):
self.path = config['make_conf']
self.storage = config['storage']
self.data = ''
self.db = overlays
self.overlays = []
self.extra = []
self.read()
def add(self, overlay):
'''
Add an overlay to make.conf.
>>> write = os.tmpnam()
>>> here = os.path.dirname(os.path.realpath(__file__))
>>> config = {'local_list' :
... here + '/tests/testfiles/global-overlays.xml',
... 'make_conf' : here + '/tests/testfiles/make.conf',
... 'nocheck' : True,
... 'storage' : '/var/lib/layman',
... 'quietness':3}
>>> c = DB(config)
>>> a = MakeConf(config, c.overlays)
>>> a.path = write
>>> a.add(c.select('wrobel'))
>>> config['make_conf'] = write
>>> b = MakeConf(config, c.overlays)
>>> [i.name for i in b.overlays]
[u'wrobel', u'wrobel-stable']
>>> b.extra
[u'/usr/local/portage/ebuilds/testing', u'/usr/local/portage/ebuilds/stable', u'/usr/local/portage/kolab2', u'/usr/local/portage/gentoo-webapps-overlay/experimental', u'/usr/local/portage/gentoo-webapps-overlay/production-ready']
>>> os.unlink(write)
'''
self.overlays.append(overlay)
self.write()
def delete(self, overlay):
'''
Delete an overlay from make.conf.
>>> write = os.tmpnam()
>>> here = os.path.dirname(os.path.realpath(__file__))
>>> config = {'local_list' :
... here + '/tests/testfiles/global-overlays.xml',
... 'make_conf' : here + '/tests/testfiles/make.conf',
... 'nocheck' : True,
... 'storage' : '/var/lib/layman',
... 'quietness':3}
>>> c = DB(config)
>>> a = MakeConf(config, c.overlays)
>>> a.path = write
>>> a.delete(c.select('wrobel-stable'))
>>> config['make_conf'] = write
>>> b = MakeConf(config, c.overlays)
>>> [i.name for i in b.overlays]
[]
>>> b.extra
[u'/usr/local/portage/ebuilds/testing', u'/usr/local/portage/ebuilds/stable', u'/usr/local/portage/kolab2', u'/usr/local/portage/gentoo-webapps-overlay/experimental', u'/usr/local/portage/gentoo-webapps-overlay/production-ready']
>>> os.unlink(write)
'''
self.overlays = [i
for i in self.overlays
if i.name != overlay.name]
self.write()
def read(self):
'''
Read the list of registered overlays from /etc/make.conf.
>>> here = os.path.dirname(os.path.realpath(__file__))
>>> config = {'local_list' :
... here + '/tests/testfiles/global-overlays.xml',
... 'make_conf' : here + '/tests/testfiles/make.conf',
... 'nocheck' : True,
... 'storage' : '/var/lib/layman',
... 'quietness':3}
>>> c = DB(config)
>>> a = MakeConf(config, c.overlays)
>>> [i.name for i in a.overlays]
[u'wrobel-stable']
>>> a.extra
[u'/usr/local/portage/ebuilds/testing', u'/usr/local/portage/ebuilds/stable', u'/usr/local/portage/kolab2', u'/usr/local/portage/gentoo-webapps-overlay/experimental', u'/usr/local/portage/gentoo-webapps-overlay/production-ready']
'''
if os.path.isfile(self.path):
self.content()
overlays = self.my_re.search(self.data)
if not overlays:
raise Exception('Did not find a PORTDIR_OVERLAY entry in file ' +
self.path +'! Did you specify the correct file?')
overlays = [i.strip()
for i in overlays.group(1).split('\n')
if i.strip()]
for i in overlays:
if i[:len(self.storage)] == self.storage:
oname = os.path.basename(i)
if oname in self.db.keys():
self.overlays.append(self.db[oname])
else:
# These are additional overlays that we dont know
# anything about. The user probably added them manually
self.extra.append(i)
else:
# These are additional overlays that we dont know anything
# about. The user probably added them manually
self.extra.append(i)
else:
self.overlays = []
self.data = 'PORTDIR_OVERLAY="\n"\n'
self.extra = [i for i in self.extra
if (i != '$PORTDIR_OVERLAY'
and i != '${PORTDIR_OVERLAY}')]
def write(self):
'''
Write the list of registered overlays to /etc/make.conf.
>>> write = os.tmpnam()
>>> here = os.path.dirname(os.path.realpath(__file__))
>>> config = {'local_list' :
... here + '/tests/testfiles/global-overlays.xml',
... 'make_conf' : here + '/tests/testfiles/make.conf',
... 'nocheck' : True,
... 'storage' : '/var/lib/layman',
... 'quietness':3}
>>> c = DB(config)
>>> a = MakeConf(config, c.overlays)
>>> a.path = write
>>> a.write()
>>> config['make_conf'] = write
>>> b = MakeConf(config, c.overlays)
>>> [i.name for i in b.overlays]
[u'wrobel-stable']
>>> b.extra
[u'/usr/local/portage/ebuilds/testing', u'/usr/local/portage/ebuilds/stable', u'/usr/local/portage/kolab2', u'/usr/local/portage/gentoo-webapps-overlay/experimental', u'/usr/local/portage/gentoo-webapps-overlay/production-ready']
>>> os.unlink(write)
'''
def prio_sort(a, b):
'''Sort by priority.'''
if a.priority < b.priority:
return -1
elif a.priority > b.priority:
return 1
return 0
self.overlays.sort(prio_sort)
paths = []
for i in self.overlays:
paths.append(path((self.storage, i.name, )))
overlays = 'PORTDIR_OVERLAY="\n'
overlays += '\n'.join(paths) + '\n'
overlays += '$PORTDIR_OVERLAY\n'
overlays += '\n'.join(self.extra)
overlays += '"'
content = self.my_re.sub(overlays, self.data)
if not self.my_re.search(content):
raise Exception('Ups, failed to set a proper PORTDIR_OVERLAY entry '
'in file ' + self.path +'! Did not overwrite the fi'
'le.')
try:
make_conf = codecs.open(self.path, 'w', 'utf-8')
make_conf.write(content)
make_conf.close()
except Exception, error:
raise Exception('Failed to read "' + self.path + '".\nError was:\n'
+ str(error))
def content(self):
'''
Returns the content of the /etc/make.conf file.
'''
try:
make_conf = codecs.open(self.path, 'r', 'utf-8')
self.data = make_conf.read()
make_conf.close()
except Exception, error:
raise Exception('Failed to read "' + self.path + '".\nError was:\n'
+ str(error))
|
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