/usr/share/ffado-mixer-qt4/ffado/configuration.py is in ffado-mixer-qt4 2.2.1-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Copyright (C) 2008-2009 by Arnold Krille
#
# This file is part of FFADO
# FFADO = Free Firewire (pro-)audio drivers for linux
#
# FFADO is based upon FreeBoB.
#
# 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 re, os
import shlex
import logging
log = logging.getLogger('configparser')
class DeviceList:
def __init__( self, filename="" ):
self.devices = list()
if not filename == "":
self.updateFromFile( filename )
def updateFromFile( self, filename, must_exist=False):
filename = os.path.expanduser(filename)
log.debug("DeviceList::updateFromFile(%s)" % filename)
if not os.path.exists( filename ):
if must_exist:
log.error("cannot open file")
return
f = open( filename, "r" )
lex = Parser( f )
config = {}
while lex.peaktoken() != lex.eof:
tmp = lex.parsenamedvalue()
if tmp != None:
config[ tmp[0] ] = tmp[1]
if config.has_key("device_definitions"):
for dev in config["device_definitions"]:
self.addDevice( dev )
def getDeviceById( self, vendor, model ):
log.debug("DeviceList::getDeviceById( %s, %s )" % (vendor, model ))
for dev in self.devices:
if int("%s" % dev['vendorid'], 0) == int("%s" % vendor, 0) and \
int("%s" % dev['modelid'], 0) == int("%s" % model, 0):
return dev
tmp = dict()
self.devices.append( tmp )
return tmp
def addDevice( self, device_dict ):
log.debug("DeviceList::addDevice()")
dev = self.getDeviceById( device_dict['vendorid'], device_dict['modelid'] )
dev.update( device_dict )
class Parser:
def __init__( self, file ):
self.lex = shlex.shlex( file )
self.eof = self.lex.eof
def peaktoken( self ):
token = self.lex.get_token()
self.lex.push_token( token )
return token
def parselist( self, level="" ):
token = self.peaktoken()
if token != "(":
return
self.lex.get_token()
log.debug("%sWill parse list" % level)
ret = []
token = self.peaktoken()
while token != ")":
ret.append( self.parsenamedvalue( level+" " ) )
token = self.peaktoken()
log.debug("%slist is %s" % (level, str(ret)))
self.lex.get_token()
if self.peaktoken() == ",":
log.debug("%sFound a delimiter" % level)
self.lex.get_token()
return ret
def parsemap( self, level="" ):
token = self.lex.get_token()
if token != "{":
return
log.debug("%sWill parse map" % level)
ret = {}
token = self.peaktoken()
while token != "}":
#self.push_token( token )
tmp = self.parsenamedvalue( level+" " )
if tmp != None:
ret[ tmp[0] ] = tmp[1]
token = self.peaktoken()
token = self.lex.get_token()
log.debug("%sMap ended with '%s' and '%s'"% (level,token,self.peaktoken()))
if self.peaktoken() in (",",";"):
log.debug("%sFound a delimiter!" % level)
self.lex.get_token()
return ret
def parsevalue( self, level="" ):
token = self.lex.get_token()
log.debug("%sparsevalue() called on token '%s'" % (level, token))
self.lex.push_token( token )
if token == "(":
value = self.parselist( level+" " )
elif token == "{":
value = self.parsemap( level+" " )
else:
value = self.lex.get_token().replace( "\"", "" )
token = self.peaktoken()
if token == ";":
log.debug("%sFound a delimiter!" % level)
self.lex.get_token()
return value
def parsenamedvalue( self, level="" ):
token = self.lex.get_token()
log.debug("%sparsenamedvalue() called on token '%s'" % (level, token))
if token == "{":
self.lex.push_token( token )
return self.parsemap( level+" " )
if len(token) > 0 and token not in ("{","}","(",")",",",";"):
log.debug("%sGot name '%s'" %(level,token))
name = token
token = self.lex.get_token()
if token in ("=",":"):
#print "%sWill parse value" % level
value = self.parsevalue( level )
return (name,value)
log.debug("%sparsenamedvalue() will return None!" % level)
return
#
# Have kind of a test directly included...
#
if __name__ == "__main__":
import sys
file = sys.argv[1]
log.setLevel(logging.DEBUG)
devs = DeviceList( file )
print devs.devices
# vim: et
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