コード例 #1
0
    def _make_uriref(string):
        """
        internal function which returns rdflib.term.URIRef if successful;
        returns False otherwise

        """
        uri_pattern = _rfc.format_patterns()["URI"]
        match = _re.compile(uri_pattern).match(string)
        if not match:
            return False
        return _rb.term.URIRef(string.decode("unicode-escape"))        
コード例 #2
0
    def _make_literal(string):
        """
        internal function which returns rdflib.term.Literal if successful;
        returns False otherwise

        """
        # for literal string without other info
        lit_pattern = ur'([^"\\]+(?:\\.[^"\\]*)*)'

        # for literal string with other info
        litinfo_name_pattern = ur'"([^"\\]*(?:\\.[^"\\]*)*)"'  # has double quote
        litinfo_info_pattern = ur'(?:@([a-z]+(?:-[a-z0-9]+)*)|\^\^(' + \
                                _rfc.format_patterns()["URI"] + ur'))?'
        litinfo_pattern = litinfo_name_pattern + litinfo_info_pattern

        # try matching both patterns
        match_lit = _re.compile(lit_pattern).match(string)
        match_litinfo = _re.compile(litinfo_pattern).match(string)

        if match_lit:
            lit = match_lit.groups()[0]
            lit = lit.decode("unicode-escape")  # encoding is unicode
            lang = None
            dtype = None

        elif match_litinfo:
            lit, lang, dtype = match_litinfo.groups()
            lit = lit.decode("unicode-escape")  # encoding is unicode
            
            if lang:
                lang = lang.decode("unicode-escape")
            else:
                lang = None
            
            if dtype:
                dtype = dtype.decode("unicode-escape")
            else:
                dtype = None

        else: # if no match
            return False

        return _rb.term.Literal(lit, lang, dtype)