#!/usr/bin/python
# -*- coding: utf-8 -*-


from SPARQLWrapper import SPARQLWrapper2, SPARQLWrapper, TURTLE
import sys, getopt

localSparqler = "http://localhost:2020/sparql"
localVirtuoso = "http://localhost:8890/sparql"

def main(server,query,sponge=False) :
	sparql = SPARQLWrapper2(server)
	if sponge : sparql.addExtraURITag("should-sponge","grab-everything")
		
	sparql.setQuery(query)
	res = sparql.query()
	variables = res.variables
	
	print "Variables:"
	print variables
	print
	print "Bindings:"
	for b in res.bindings :
		for v in res.variables :
			try :
				val = b[v]
				if val.lang :
					str = "%s: %s@%s" % (v,val.value,val.lang)
				elif val.datatype :
					str = "%s: %s^^%s" % (v,val.value,val.datatype)
				else :
					str = "%s: %s" % (v,val.value)
			except KeyError :
				# no binding to that one...
				str = "%s: <<None>>" % v
			print str.encode('utf-8')
		print
			
	
	
# -------------------------------------------------------------------------------------------------------------
server   = localSparqler
query    = ""
sponge  = False
usagetxt="""%s [-s] [-u url] [file]
-s:      use local sparqler (default)
-v:      use local virtuoso
-u url:  server url
-p:      issue an extra sponge for virtuoso
file: sparql query file
"""
def usage() :
	print usagetxt % sys.argv[0]
	sys.exit(1)

if __name__ == '__main__' :
	if len(sys.argv) == 1: 
		usage()
	try :
		opts,args = getopt.getopt(sys.argv[1:],"shu:pv")
		for o,a in opts :
			if o == "-s" :
				server = localSparqler
			elif o == "-v" :
				server = localVirtuoso
				sponge = True
			elif o == "-h" :
				print usage
				sys.exit(0)
			elif o == "-u" :
				server = a
			elif o == "-p" :
				sponge = True
		if query == "" and len(args) > 0 :
			inp = file(args[0])
			query = ""
			for l in inp :
				query += l
	except :
		usage()
	if query == "" : usage()
	main(server,query,sponge)