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SickGear/lib/feedparser/namespaces/georss.py

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# Support for the GeoRSS format
# Copyright 2010-2023 Kurt McKee <contactme@kurtmckee.org>
# Copyright 2002-2008 Mark Pilgrim
# All rights reserved.
#
# This file is a part of feedparser.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS'
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
from ..util import FeedParserDict
class Namespace:
supported_namespaces = {
"http://www.w3.org/2003/01/geo/wgs84_pos#": "geo",
"http://www.georss.org/georss": "georss",
"http://www.opengis.net/gml": "gml",
}
def __init__(self):
self.ingeometry = 0
super().__init__()
def _start_georssgeom(self, attrs_d):
self.push("geometry", 0)
context = self._get_context()
context["where"] = FeedParserDict()
_start_georss_point = _start_georssgeom
_start_georss_line = _start_georssgeom
_start_georss_polygon = _start_georssgeom
_start_georss_box = _start_georssgeom
def _save_where(self, geometry):
context = self._get_context()
context["where"].update(geometry)
def _end_georss_point(self):
geometry = _parse_georss_point(self.pop("geometry"))
if geometry:
self._save_where(geometry)
def _end_georss_line(self):
geometry = _parse_georss_line(self.pop("geometry"))
if geometry:
self._save_where(geometry)
def _end_georss_polygon(self):
this = self.pop("geometry")
geometry = _parse_georss_polygon(this)
if geometry:
self._save_where(geometry)
def _end_georss_box(self):
geometry = _parse_georss_box(self.pop("geometry"))
if geometry:
self._save_where(geometry)
def _start_where(self, attrs_d):
self.push("where", 0)
context = self._get_context()
context["where"] = FeedParserDict()
_start_georss_where = _start_where
def _parse_srs_attrs(self, attrs_d):
srs_name = attrs_d.get("srsname")
try:
srs_dimension = int(attrs_d.get("srsdimension", "2"))
except ValueError:
srs_dimension = 2
context = self._get_context()
if "where" not in context:
context["where"] = {}
context["where"]["srsName"] = srs_name
context["where"]["srsDimension"] = srs_dimension
def _start_gml_point(self, attrs_d):
self._parse_srs_attrs(attrs_d)
self.ingeometry = 1
self.push("geometry", 0)
def _start_gml_linestring(self, attrs_d):
self._parse_srs_attrs(attrs_d)
self.ingeometry = "linestring"
self.push("geometry", 0)
def _start_gml_polygon(self, attrs_d):
self._parse_srs_attrs(attrs_d)
self.push("geometry", 0)
def _start_gml_exterior(self, attrs_d):
self.push("geometry", 0)
def _start_gml_linearring(self, attrs_d):
self.ingeometry = "polygon"
self.push("geometry", 0)
def _start_gml_pos(self, attrs_d):
self.push("pos", 0)
def _end_gml_pos(self):
this = self.pop("pos")
context = self._get_context()
srs_name = context["where"].get("srsName")
srs_dimension = context["where"].get("srsDimension", 2)
swap = True
if srs_name and "EPSG" in srs_name:
epsg = int(srs_name.split(":")[-1])
swap = bool(epsg in _geogCS)
geometry = _parse_georss_point(this, swap=swap, dims=srs_dimension)
if geometry:
self._save_where(geometry)
def _start_gml_poslist(self, attrs_d):
self.push("pos", 0)
def _end_gml_poslist(self):
this = self.pop("pos")
context = self._get_context()
srs_name = context["where"].get("srsName")
srs_dimension = context["where"].get("srsDimension", 2)
swap = True
if srs_name and "EPSG" in srs_name:
epsg = int(srs_name.split(":")[-1])
swap = bool(epsg in _geogCS)
geometry = _parse_poslist(this, self.ingeometry, swap=swap, dims=srs_dimension)
if geometry:
self._save_where(geometry)
def _end_geom(self):
self.ingeometry = 0
self.pop("geometry")
_end_gml_point = _end_geom
_end_gml_linestring = _end_geom
_end_gml_linearring = _end_geom
_end_gml_exterior = _end_geom
_end_gml_polygon = _end_geom
def _end_where(self):
self.pop("where")
_end_georss_where = _end_where
# GeoRSS geometry parsers. Each return a dict with 'type' and 'coordinates'
# items, or None in the case of a parsing error.
def _parse_poslist(value, geom_type, swap=True, dims=2):
if geom_type == "linestring":
return _parse_georss_line(value, swap, dims)
elif geom_type == "polygon":
ring = _parse_georss_line(value, swap, dims)
return {"type": "Polygon", "coordinates": (ring["coordinates"],)}
else:
return None
def _gen_georss_coords(value, swap=True, dims=2):
# A generator of (lon, lat) pairs from a string of encoded GeoRSS
# coordinates. Converts to floats and swaps order.
latlons = (float(ll) for ll in value.replace(",", " ").split())
while True:
try:
t = [next(latlons), next(latlons)][:: swap and -1 or 1]
if dims == 3:
t.append(next(latlons))
yield tuple(t)
except StopIteration:
return
def _parse_georss_point(value, swap=True, dims=2):
# A point contains a single latitude-longitude pair, separated by
# whitespace. We'll also handle comma separators.
try:
coords = list(_gen_georss_coords(value, swap, dims))
return {"type": "Point", "coordinates": coords[0]}
except (IndexError, ValueError):
return None
def _parse_georss_line(value, swap=True, dims=2):
# A line contains a space separated list of latitude-longitude pairs in
# WGS84 coordinate reference system, with each pair separated by
# whitespace. There must be at least two pairs.
try:
coords = list(_gen_georss_coords(value, swap, dims))
return {"type": "LineString", "coordinates": coords}
except (IndexError, ValueError):
return None
def _parse_georss_polygon(value, swap=True, dims=2):
# A polygon contains a space separated list of latitude-longitude pairs,
# with each pair separated by whitespace. There must be at least four
# pairs, with the last being identical to the first (so a polygon has a
# minimum of three actual points).
try:
ring = list(_gen_georss_coords(value, swap, dims))
except (IndexError, ValueError):
return None
if len(ring) < 4:
return None
return {"type": "Polygon", "coordinates": (ring,)}
def _parse_georss_box(value, swap=True, dims=2):
# A bounding box is a rectangular region, often used to define the extents
# of a map or a rough area of interest. A box contains two space separate
# latitude-longitude pairs, with each pair separated by whitespace. The
# first pair is the lower corner, the second is the upper corner.
try:
coords = list(_gen_georss_coords(value, swap, dims))
return {"type": "Box", "coordinates": tuple(coords)}
except (IndexError, ValueError):
return None
# The list of EPSG codes for geographic (latitude/longitude) coordinate
# systems to support decoding of GeoRSS GML profiles.
_geogCS = [
3819,
3821,
3824,
3889,
3906,
4001,
4002,
4003,
4004,
4005,
4006,
4007,
4008,
4009,
4010,
4011,
4012,
4013,
4014,
4015,
4016,
4018,
4019,
4020,
4021,
4022,
4023,
4024,
4025,
4027,
4028,
4029,
4030,
4031,
4032,
4033,
4034,
4035,
4036,
4041,
4042,
4043,
4044,
4045,
4046,
4047,
4052,
4053,
4054,
4055,
4075,
4081,
4120,
4121,
4122,
4123,
4124,
4125,
4126,
4127,
4128,
4129,
4130,
4131,
4132,
4133,
4134,
4135,
4136,
4137,
4138,
4139,
4140,
4141,
4142,
4143,
4144,
4145,
4146,
4147,
4148,
4149,
4150,
4151,
4152,
4153,
4154,
4155,
4156,
4157,
4158,
4159,
4160,
4161,
4162,
4163,
4164,
4165,
4166,
4167,
4168,
4169,
4170,
4171,
4172,
4173,
4174,
4175,
4176,
4178,
4179,
4180,
4181,
4182,
4183,
4184,
4185,
4188,
4189,
4190,
4191,
4192,
4193,
4194,
4195,
4196,
4197,
4198,
4199,
4200,
4201,
4202,
4203,
4204,
4205,
4206,
4207,
4208,
4209,
4210,
4211,
4212,
4213,
4214,
4215,
4216,
4218,
4219,
4220,
4221,
4222,
4223,
4224,
4225,
4226,
4227,
4228,
4229,
4230,
4231,
4232,
4233,
4234,
4235,
4236,
4237,
4238,
4239,
4240,
4241,
4242,
4243,
4244,
4245,
4246,
4247,
4248,
4249,
4250,
4251,
4252,
4253,
4254,
4255,
4256,
4257,
4258,
4259,
4260,
4261,
4262,
4263,
4264,
4265,
4266,
4267,
4268,
4269,
4270,
4271,
4272,
4273,
4274,
4275,
4276,
4277,
4278,
4279,
4280,
4281,
4282,
4283,
4284,
4285,
4286,
4287,
4288,
4289,
4291,
4292,
4293,
4294,
4295,
4296,
4297,
4298,
4299,
4300,
4301,
4302,
4303,
4304,
4306,
4307,
4308,
4309,
4310,
4311,
4312,
4313,
4314,
4315,
4316,
4317,
4318,
4319,
4322,
4324,
4326,
4463,
4470,
4475,
4483,
4490,
4555,
4558,
4600,
4601,
4602,
4603,
4604,
4605,
4606,
4607,
4608,
4609,
4610,
4611,
4612,
4613,
4614,
4615,
4616,
4617,
4618,
4619,
4620,
4621,
4622,
4623,
4624,
4625,
4626,
4627,
4628,
4629,
4630,
4631,
4632,
4633,
4634,
4635,
4636,
4637,
4638,
4639,
4640,
4641,
4642,
4643,
4644,
4645,
4646,
4657,
4658,
4659,
4660,
4661,
4662,
4663,
4664,
4665,
4666,
4667,
4668,
4669,
4670,
4671,
4672,
4673,
4674,
4675,
4676,
4677,
4678,
4679,
4680,
4681,
4682,
4683,
4684,
4685,
4686,
4687,
4688,
4689,
4690,
4691,
4692,
4693,
4694,
4695,
4696,
4697,
4698,
4699,
4700,
4701,
4702,
4703,
4704,
4705,
4706,
4707,
4708,
4709,
4710,
4711,
4712,
4713,
4714,
4715,
4716,
4717,
4718,
4719,
4720,
4721,
4722,
4723,
4724,
4725,
4726,
4727,
4728,
4729,
4730,
4731,
4732,
4733,
4734,
4735,
4736,
4737,
4738,
4739,
4740,
4741,
4742,
4743,
4744,
4745,
4746,
4747,
4748,
4749,
4750,
4751,
4752,
4753,
4754,
4755,
4756,
4757,
4758,
4759,
4760,
4761,
4762,
4763,
4764,
4765,
4801,
4802,
4803,
4804,
4805,
4806,
4807,
4808,
4809,
4810,
4811,
4813,
4814,
4815,
4816,
4817,
4818,
4819,
4820,
4821,
4823,
4824,
4901,
4902,
4903,
4904,
4979,
]
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