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

import sys
import getopt
from SPARQLWrapper import SPARQLWrapper2

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)