import re from django.utils.regex_helper import _lazy_re_compile # Regular expression for recognizing HEXEWKB and WKT. A prophylactic measure # to prevent potentially malicious input from reaching the underlying C # library. Not a substitute for good web security programming practices. hex_regex = _lazy_re_compile(r"^[0-9A-F]+$", re.I) wkt_regex = _lazy_re_compile( r"^(SRID=(?P<srid>\-?[0-9]+);)?" r"(?P<wkt>" r"(?P<type>POINT|LINESTRING|LINEARRING|POLYGON|MULTIPOINT|" r"MULTILINESTRING|MULTIPOLYGON|GEOMETRYCOLLECTION)" r"[ACEGIMLONPSRUTYZ0-9,\.\-\+\(\) ]+)$", re.I, ) json_regex = _lazy_re_compile(r"^(\s+)?\{.*}(\s+)?$", re.DOTALL)