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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>\-?\d+);)?'
r'(?P<wkt>'
r'(?P<type>POINT|LINESTRING|LINEARRING|POLYGON|MULTIPOINT|'
r'MULTILINESTRING|MULTIPOLYGON|GEOMETRYCOLLECTION)'
r'[ACEGIMLONPSRUTYZ\d,\.\-\+\(\) ]+)$',
re.I
)
json_regex = _lazy_re_compile(r'^(\s+)?\{.*}(\s+)?$', re.DOTALL)
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