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# -*- coding: utf-8 -*-
###############################################################################
# LAYMAN OVERLAY SOURCE BASE CLASS
###############################################################################
# File: source.py
#
# Base class for the different overlay types.
#
# Copyright:
# (c) 2010 Sebastian Pipping
# Distributed under the terms of the GNU General Public License v2
#
# Author(s):
# Sebastian Pipping <sebastian@pipping.org>
from __future__ import unicode_literals
import os
import copy
import sys
import shutil
import subprocess
from layman.utils import path, resolve_command, run_command
supported_cache = {}
def _supported(key, check_supported=None):
"""internal caching function that checks tracks any
un-supported/supported repo types."""
if key is None:
return False
if key not in supported_cache:
supported_cache[key] = check_supported()
return supported_cache[key]
def require_supported(binaries, _output):
for command, mtype, package in binaries:
kind, path = resolve_command(command, _output)
if not path:
if _output:
_output(kind + ' ' + command + ' seems to be missing!'
' Overlay type "' + mtype + '" not support'
'ed. Did you emerge ' + package + '?')
return False
return True
class OverlaySource(object):
type_key = None
def __init__(self, parent, config, _location,
ignore = 0):
self.parent = parent
self.src = _location
self.config = config
self.ignore = ignore
self.output = config['output']
def __eq__(self, other):
return self.src == other.src
def __ne__(self, other):
return not self.__eq__(other)
def add(self, base):
'''Add the overlay.'''
mdir = path([base, self.parent.name])
if os.path.exists(mdir):
self.output.error('Directory ' + mdir +
' already exists. Will not overwrite its contents!')
return False
os.makedirs(mdir)
return True
def update(self, src):
'''
Updates the overlay source url.
@params src: source URL.
'''
pass
def sync(self, base):
'''Sync the overlay.'''
pass
def delete(self, base):
'''Delete the overlay.'''
mdir = path([base, self.parent.name])
if not os.path.exists(mdir):
self.output.warn('Directory ' + mdir + \
' did not exist, no files deleted.')
return False
self.output.info('Deleting directory "%s"' % mdir, 2)
shutil.rmtree(mdir)
return True
def supported(self):
'''Is the overlay type supported?'''
return True
def is_supported(self):
'''Is the overlay type supported?'''
return _supported(self.get_type_key(), self.supported)
def get_type_key(self):
return '%s' % self.__class__.type_key
def command(self):
return self.config['%s_command' % self.__class__.type_key]
def postsync(self, failed_sync, **kwargs):
"""Runs any repo specific postsync operations
"""
# check if the add/sync operation succeeded
if failed_sync:
return failed_sync
# good to continue
postsync_opt = self.config['%s_postsync' % self.__class__.type_key]
if len(postsync_opt):
# repalce "%cwd=" while it's still a string'
_opt = postsync_opt.replace('%cwd=',
kwargs.get('cwd', '')).split()
command = _opt[0]
args = _opt[1:]
return run_command(self.config, command, args,
cmd='%s_postsync' % self.__class__.type_key)
return failed_sync
def to_xml_hook(self, repo_elem):
pass
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