#
#
#

import types

#
# class which reads a "config file" (variable assignments using
# Python syntax) and allows queries of the files contents
#
class configfile :

    def __init__( self, fileName ) :
        self.fileName = fileName
        self.VarVals = {}
        execfile( fileName, globals(), self.VarVals )
        
    def __del__( self ) :
	print "DELETING CF INSTANCE FOR: %s" % self.fileName
        
    def getFileName( self ) :
        return self.fileName

    def getVars( self ) :
        return self.VarVals.keys()

    def getValue( self, var ) :
        return self.VarVals[var]
    



#
# helper functions for C/C++ since it does not have native lists/maps
#
def getType( obj ) :
    t = type( obj )
    # return vals:
    # 0 = UNKNOWN
    # 1 = INT
    # 2 = STRING
    # 3 = FLOAT
    # 4 = DOUBLE
    # 5 = LIST
    # 6 = DICT
    if( t == types.IntType ) :
        return 1
    elif( t == types.StringType ) :
        return 2
    elif( t == types.FloatType ) :
        return 3
    elif( t == types.LongType ) :
        return 4
    elif( t == types.ListType ) :
        return 5
    elif( t == types.DictType ) :
        return 6
    else :
        return 0

def extractInt( obj ) :
    if( type( obj ) == types.IntType ) :
        return obj
    else :
        raise TypeError
    
def extractString( obj ) :
    if( type( obj ) == types.StringType ) :
        return obj
    else :
        raise TypeError

def extractFloat( obj ) :
    if( type( obj ) == types.FloatType ) :
        return obj
    else :
        raise TypeError

def extractDouble( obj ) :
    if( type( obj ) == types.LongType ) :
        return obj
    else :
        raise TypeError


#
# LIST HELPERS
#
def getListLength( obj ) :
    if( type( obj ) == types.ListType ) :
        return len( obj )
    else :
        raise TypeError

def getNthItemInList( obj, i ) :
    if( type( obj ) == types.ListType ) :
        return obj[i]
    else :
        raise TypeError


#
# MAP HELPERS
#
def getKeys( obj ) :
    if( type( obj ) == types.DictType ) :
        return obj.keys()
    else :
        raise TypeError

def getItemInMap( obj, k ) :
    if( type( obj ) == types.DictType ) :
        return obj[k]
    else :
        raise TypeError

getItemInMapIntKey = getItemInMap
getItemInMapStringKey = getItemInMap
getItemInMapFloatKey = getItemInMap
getItemInMapDoubleKey = getItemInMap


#
# TESTER
#
if( __name__ == "__main__" ) :

    #
    # so freeze dosent get it
    #
    exec( "import sys" )

    if( len( sys.argv ) != 2 ) :
        print "USAGE: ", sys.argv[0], " <config file>"
        sys.exit( 1 )
        
    cf = configfile( sys.argv[1] )
    for k in cf.getVars() :
        print "KEY: %s VAL: %s" % (k, cf.getValue( k ))