f5fb4a768a
- move cache files extension string to etpConst - fix the Entropy code accordingly Entropy/EntropyCacher: - add sync method to force a cache flush - implement a thread lock to be thread-safe Entropy/EquoInterface: - fix a bug with cache cleaning after masking/unmasking packages - scan PackageSettings at every instance load to ensure proper settings reads - get_masked_packages_tree: some speed improvements - is_match_masked_by_user: new method, makes easy to check if a package has been masked by the user - is_match_unmasked_by_user: same as above, new method - mask_match, unmask_match: rewrite the management of package masking and make possible to mask a package from the interface too (only unmask was previously implemented) - mask_match, unmask_match: make possible to mask/unmask by key + slot coupling (app-foo/foo:2) Entropy/EntropyDatabaseInterface: - improve speed of idpackageValidator child methods git-svn-id: http://svn.sabayonlinux.org/projects/entropy/trunk@2886 cd1c1023-2f26-0410-ae45-c471fc1f0318
140 lines
4.4 KiB
Python
140 lines
4.4 KiB
Python
#!/usr/bin/python
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'''
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# DESCRIPTION:
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# load/save a data to file by dumping its structure
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Copyright (C) 2007-2008 Fabio Erculiani
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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'''
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from __future__ import with_statement
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from entropyConstants import *
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try:
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import cPickle as pickle
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except ImportError:
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import pickle
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'''
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@description: dump object to file
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@input: name of the object, object
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@output: status code
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'''
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def dumpobj(name, object, completePath = False, ignoreExceptions = True):
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while 1: # trap ctrl+C
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try:
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if completePath:
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dmpfile = name
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else:
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dump_path = os.path.join(etpConst['dumpstoragedir'],name)
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dump_dir = os.path.dirname(dump_path)
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#dump_name = os.path.basename(dump_path)
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if not os.path.isdir(dump_dir):
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os.makedirs(dump_dir,0775)
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const_setup_perms(dump_dir,etpConst['entropygid'])
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dmpfile = dump_path+etpConst['cachedumpext']
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if os.path.isfile(dmpfile):
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os.remove(dmpfile)
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with open(dmpfile,"wb") as f:
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pickle.dump(object,f)
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os.chmod(dmpfile,0664)
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if etpConst['entropygid'] != None:
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os.chown(dmpfile,-1,etpConst['entropygid'])
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f.flush()
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except RuntimeError:
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try: os.remove(dmpfile)
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except OSError: pass
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except (EOFError,IOError,OSError):
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if not ignoreExceptions:
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raise
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break
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'''
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@description: serialize object to f (file)
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@input: object, file object
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@output: file object, pointer to the beginning
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'''
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def serialize(myobj, f, do_seek = True):
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pickle.dump(myobj,f)
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f.flush()
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if do_seek:
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f.seek(0)
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return f
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'''
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@description: unserialize file to object (file)
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@input: file object
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@output: object
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'''
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def unserialize(f):
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x = pickle.load(f)
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return x
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'''
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@description: unserialize pickle string to object
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@input: string
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@output: object
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'''
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def unserialize_string(mystring):
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x = pickle.loads(mystring)
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return x
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'''
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@description: serialize object to string
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@input: object, file object
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@output: file object, pointer to the beginning
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'''
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def serialize_string(myobj):
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return pickle.dumps(myobj)
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'''
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@description: load object from a file
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@input: name of the object
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@output: object or, if error -1
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'''
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def loadobj(name, completePath = False):
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while 1:
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if completePath:
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dmpfile = name
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else:
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dump_path = os.path.join(etpConst['dumpstoragedir'],name)
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#dump_dir = os.path.dirname(dump_path)
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#dump_name = os.path.basename(dump_path)
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dmpfile = dump_path+etpConst['cachedumpext']
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if os.path.isfile(dmpfile) and os.access(dmpfile,os.R_OK):
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try:
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with open(dmpfile,"rb") as f:
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x = None
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try:
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x = pickle.load(f)
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except (ValueError,EOFError,IOError,OSError,pickle.UnpicklingError):
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pass
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return x
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except (IOError,OSError,):
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pass
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break
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def getobjmtime(name):
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mtime = 0
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dump_path = os.path.join(etpConst['dumpstoragedir'],name+etpConst['cachedumpext'])
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if os.path.isfile(dump_path) and os.access(dump_path,os.R_OK):
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mtime = os.path.getmtime(dump_path)
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return int(mtime)
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def removeobj(name):
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if os.path.isfile(etpConst['dumpstoragedir']+"/"+name+etpConst['cachedumpext']):
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try:
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os.remove(etpConst['dumpstoragedir']+"/"+name+etpConst['cachedumpext'])
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except OSError:
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pass |