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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)
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