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# -*- coding: UTF-8 -*-
# Copyright 2004-2005 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $
from Errors import *
import os
class FileParser:
"""
Parse some basic key=value configuration files.
Values are passed to the pair function.
"""
def parse(self, file):
if not os.path.isfile(file):
raise InvalidConfigError(file)
if not os.access(file, os.R_OK):
raise PermissionError
stream = open(file, 'r')
for line in stream:
line = line.strip('\n')
if line.isspace() or line == '' or line.startswith('#'):
continue
else:
index = line.find('=')
name = line[:index]
value = line [index+1:]
if value == '':
continue
#raise InvalidConfigError(file)
value = value.strip('\\\'\"')
while value.find('${') >= 0:
item = value[value.find('${')+2:value.find('}')]
if self.config.has_key(item):
val = self.config[item]
else:
val = ''
value = value.replace('${%s}' % item, val)
self.pair(name,value)
stream.close()
def pair(self, key, value):
pass
class EnvFileParser(FileParser):
"""
Stores the configuation in a dictionary
"""
def __init__(self, file):
self.config = {}
self.parse(file)
def pair(self, key, value):
self.config[key] = value
def get_config(self):
return self.config.copy()
class PrefsFileParser(FileParser):
"""
Stores it in a list.
"""
def __init__(self, file):
self.config = []
self.parse(file)
def pair(self, key, value):
self.config.append([key,value.strip('\t ').split(' ')])
def get_config(self):
return self.config
# vim:set expandtab tabstop=4 shiftwidth=4 softtabstop=4 nowrap:
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