b7ae71fe74
- dumpobj: fix directory permissions setup git-svn-id: http://svn.sabayonlinux.org/projects/entropy/trunk@3012 cd1c1023-2f26-0410-ae45-c471fc1f0318
151 lines
4.4 KiB
Python
151 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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d_ext = etpConst['cachedumpext']
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d_dir = etpConst['dumpstoragedir']
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e_gid = etpConst['entropygid']
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if e_gid == None: e_gid = 0
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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(d_dir,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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my_dump_dir = dump_dir
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d_paths = []
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while not os.path.isdir(my_dump_dir):
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d_paths.append(my_dump_dir)
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my_dump_dir = os.path.dirname(my_dump_dir)
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if d_paths:
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d_paths = sorted(d_paths)
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for d_path in d_paths:
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os.mkdir(d_path,0775)
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const_setup_perms(d_path,e_gid)
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dmpfile = dump_path+d_ext
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with open(dmpfile,"wb") as f:
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pickle.dump(object,f)
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f.flush()
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const_setup_file(dmpfile, e_gid, 0664)
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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(d_dir,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+d_ext
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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(d_dir,name+d_ext)
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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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filepath = d_dir+"/"+name+d_ext
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if os.path.isfile(filepath) and os.access(filepath,os.W_OK):
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os.remove(filepath)
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return True
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return False
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