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# debpartial-mirror - partial debian mirror package tool
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# (c) 2004 Otavio Salvador <otavio@debian.org>, Marco Presi <zufus@debian.org>
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#
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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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#
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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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#
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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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# $Id$
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import os
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import md5
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import gzip
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class FileSystem:
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"""
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This class provides methods to create backends dirs into the
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partial-mirror
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"""
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def __init__(self, parent, directory):
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self._errors = [13]
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self._parent = os.path.normpath(parent)
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self._dir = os.path.join(parent, directory)
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if not self._checkParent():
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print "Cannot create %s" % self._dir
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return
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self.create(self._dir)
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def _checkParent (self):
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""" Check for parent dir """
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if not self._check (self._parent):
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return (self.create (self._parent) )
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return True
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def _check (self, path, debug=True):
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""" Check for path exsistance """
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if not os.path.exists (path):
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return False
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return True
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def check(self):
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""" Check for FileSystem existance """
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return (self._check(self._dir))
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def create(self, path, debug=True):
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""" Create dir """
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try:
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os.makedirs (path)
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return True
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except OSError, (errno,strerror):
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if errno in self._errors and debug:
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print strerror
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return False
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def remove(self):
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""" Remove backend """
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if self.check():
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try:
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print "Removing %s" % self._dir
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os.rmdir(self._dir)
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except OSError, (errno, strerror):
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print strerror
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def path(self):
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""" Return FileSystem path """
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return (self._dir)
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def md5_on (self, f):
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"""Sum files"""
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try:
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file_to_hash = open(os.path.join(self._dir, f), 'r')
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except IOError, msg:
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print msg
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return -1
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md5hash = md5.new()
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md5hash.update(file_to_hash.read())
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file_to_hash.close()
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return md5hash.hexdigest()
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def uncompress (self, f):
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"""Uncompress a file"""
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print 'Uncompressing', f
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# uncompress the file
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compressedFile = gzip.GzipFile(f, 'rb')
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try:
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outputFile = open(f.split('.gz')[0], "wb")
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except IOError, msg:
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print msg
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sys.exit(1)
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numBytes = 0
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while True:
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data = compressedFile.read(64 * 1024)
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if not data:
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break
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outputFile.write(data)
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numBytes = numBytes + len(data)
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compressedFile.close()
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outputFile.close()
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return True
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