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# file_matcher.py
#
# Copyright (C) 2014 Tim Marston <tim@edm.am>
#
# This file is part of stdhome (hereafter referred to as "this program").
# See http://ed.am/dev/stdhome for more information.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os, re, errno
class FileMatcher:
def __init__( self, file, section = None ):
self.file = file
self.section = section
self.patterns = list()
self.read()
def read( self ):
# read file
file = os.path.expanduser( self.file )
try:
with open( file ) as f:
lines = f.readlines()
except IOError as e:
if e.errno != errno.ENOENT: raise
lines = list()
# parse file
capture = False if self.section else True
for line in lines:
# clean up line and skip empty lines and comments
line = line.strip();
if not len( line ): continue
if line[ :1 ] == '#': continue
# if section is set, capture lines after the section heading and
# only until the next heading
if capture:
if self.section and re.match( '\[', line ): break
self.patterns.append( self.convert_line_to_regex( line ) )
elif self.section and line == '[' + self.section + ']':
capture = True
def convert_line_to_regex( self, line ):
# detect (and remove) quotes
# quotes = None
# if line[ :1 ] == line[ -1: ] and line[ :1 ] in list( "'", '"' ):
# quotes = line[ :1 ]
# line = line[ 1:-1 ]
# detect escaped chars
# if quotes ==
# convert * and ?
line = re.sub( r'\?', '.', line )
line = re.sub( r'\*', '.*', line )
line = "^%s$" % ( line )
return line
def matches( self, rel_file ):
for pattern in self.patterns:
if re.search( pattern, rel_file ):
return True
return False
def __str__( self ):
content = "', '".join( self.patterns )
if content: content = " '" + content + "' "
return "FileMatcher(" + content + ")"
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