# -*- coding: ISO-8859-15 -*-
# =============================================================================
# Copyright (c) 2011 Tom Kralidis
#
# Authors : Tom Kralidis <tomkralidis@gmail.com>
#
# Contact email: tomkralidis@gmail.com
# =============================================================================
""" API for OGC CRS constructs. """
from __future__ import (absolute_import, division, print_function)
# list of URN codes for EPSG in which axis order
# of coordinates are y,x (e.g. lat, long)
axisorder_yx = frozenset([
4326,
4258,
31466,
31467,
31468,
31469,
2166,
2167,
2168,
2036,
2044,
2045,
2065,
2081,
2082,
2083,
2085,
2086,
2091,
2092,
2093,
2096,
2097,
2098,
2105,
2106,
2107,
2108,
2109,
2110,
2111,
2112,
2113,
2114,
2115,
2116,
2117,
2118,
2119,
2120,
2121,
2122,
2123,
2124,
2125,
2126,
2127,
2128,
2129,
2130,
2131,
2132,
2169,
2170,
2171,
2172,
2173,
2174,
2175,
2176,
2177,
2178,
2179,
2180,
2193,
2199,
2200,
2206,
2207,
2208,
2209,
2210,
2211,
2212,
2319,
2320,
2321,
2322,
2323,
2324,
2325,
2326,
2327,
2328,
2329,
2330,
2331,
2332,
2333,
2334,
2335,
2336,
2337,
2338,
2339,
2340,
2341,
2342,
2343,
2344,
2345,
2346,
2347,
2348,
2349,
2350,
2351,
2352,
2353,
2354,
2355,
2356,
2357,
2358,
2359,
2360,
2361,
2362,
2363,
2364,
2365,
2366,
2367,
2368,
2369,
2370,
2371,
2372,
2373,
2374,
2375,
2376,
2377,
2378,
2379,
2380,
2381,
2382,
2383,
2384,
2385,
2386,
2387,
2388,
2389,
2390,
2391,
2392,
2393,
2394,
2395,
2396,
2397,
2398,
2399,
2400,
2401,
2402,
2403,
2404,
2405,
2406,
2407,
2408,
2409,
2410,
2411,
2412,
2413,
2414,
2415,
2416,
2417,
2418,
2419,
2420,
2421,
2422,
2423,
2424,
2425,
2426,
2427,
2428,
2429,
2430,
2431,
2432,
2433,
2434,
2435,
2436,
2437,
2438,
2439,
2440,
2441,
2442,
2443,
2444,
2445,
2446,
2447,
2448,
2449,
2450,
2451,
2452,
2453,
2454,
2455,
2456,
2457,
2458,
2459,
2460,
2461,
2462,
2463,
2464,
2465,
2466,
2467,
2468,
2469,
2470,
2471,
2472,
2473,
2474,
2475,
2476,
2477,
2478,
2479,
2480,
2481,
2482,
2483,
2484,
2485,
2486,
2487,
2488,
2489,
2490,
2491,
2492,
2493,
2494,
2495,
2496,
2497,
2498,
2499,
2500,
2501,
2502,
2503,
2504,
2505,
2506,
2507,
2508,
2509,
2510,
2511,
2512,
2513,
2514,
2515,
2516,
2517,
2518,
2519,
2520,
2521,
2522,
2523,
2524,
2525,
2526,
2527,
2528,
2529,
2530,
2531,
2532,
2533,
2534,
2535,
2536,
2537,
2538,
2539,
2540,
2541,
2542,
2543,
2544,
2545,
2546,
2547,
2548,
2549,
2551,
2552,
2553,
2554,
2555,
2556,
2557,
2558,
2559,
2560,
2561,
2562,
2563,
2564,
2565,
2566,
2567,
2568,
2569,
2570,
2571,
2572,
2573,
2574,
2575,
2576,
2577,
2578,
2579,
2580,
2581,
2582,
2583,
2584,
2585,
2586,
2587,
2588,
2589,
2590,
2591,
2592,
2593,
2594,
2595,
2596,
2597,
2598,
2599,
2600,
2601,
2602,
2603,
2604,
2605,
2606,
2607,
2608,
2609,
2610,
2611,
2612,
2613,
2614,
2615,
2616,
2617,
2618,
2619,
2620,
2621,
2622,
2623,
2624,
2625,
2626,
2627,
2628,
2629,
2630,
2631,
2632,
2633,
2634,
2635,
2636,
2637,
2638,
2639,
2640,
2641,
2642,
2643,
2644,
2645,
2646,
2647,
2648,
2649,
2650,
2651,
2652,
2653,
2654,
2655,
2656,
2657,
2658,
2659,
2660,
2661,
2662,
2663,
2664,
2665,
2666,
2667,
2668,
2669,
2670,
2671,
2672,
2673,
2674,
2675,
2676,
2677,
2678,
2679,
2680,
2681,
2682,
2683,
2684,
2685,
2686,
2687,
2688,
2689,
2690,
2691,
2692,
2693,
2694,
2695,
2696,
2697,
2698,
2699,
2700,
2701,
2702,
2703,
2704,
2705,
2706,
2707,
2708,
2709,
2710,
2711,
2712,
2713,
2714,
2715,
2716,
2717,
2718,
2719,
2720,
2721,
2722,
2723,
2724,
2725,
2726,
2727,
2728,
2729,
2730,
2731,
2732,
2733,
2734,
2735,
2738,
2739,
2740,
2741,
2742,
2743,
2744,
2745,
2746,
2747,
2748,
2749,
2750,
2751,
2752,
2753,
2754,
2755,
2756,
2757,
2758,
2935,
2936,
2937,
2938,
2939,
2940,
2941,
2953,
2963,
3006,
3007,
3008,
3009,
3010,
3011,
3012,
3013,
3014,
3015,
3016,
3017,
3018,
3019,
3020,
3021,
3022,
3023,
3024,
3025,
3026,
3027,
3028,
3029,
3030,
3034,
3035,
3038,
3039,
3040,
3041,
3042,
3043,
3044,
3045,
3046,
3047,
3048,
3049,
3050,
3051,
3058,
3059,
3068,
3114,
3115,
3116,
3117,
3118,
3120,
3126,
3127,
3128,
3129,
3130,
3131,
3132,
3133,
3134,
3135,
3136,
3137,
3138,
3139,
3140,
3146,
3147,
3150,
3151,
3152,
3300,
3301,
3328,
3329,
3330,
3331,
3332,
3333,
3334,
3335,
3346,
3350,
3351,
3352,
3366,
3386,
3387,
3388,
3389,
3390,
3396,
3397,
3398,
3399,
3407,
3414,
3416,
3764,
3788,
3789,
3790,
3791,
3793,
3795,
3796,
3819,
3821,
3823,
3824,
3833,
3834,
3835,
3836,
3837,
3838,
3839,
3840,
3841,
3842,
3843,
3844,
3845,
3846,
3847,
3848,
3849,
3850,
3851,
3852,
3854,
3873,
3874,
3875,
3876,
3877,
3878,
3879,
3880,
3881,
3882,
3883,
3884,
3885,
3888,
3889,
3906,
3907,
3908,
3909,
3910,
3911,
4001,
4002,
4003,
4004,
4005,
4006,
4007,
4008,
4009,
4010,
4011,
4012,
4013,
4014,
4015,
4016,
4017,
4018,
4019,
4020,
4021,
4022,
4023,
4024,
4025,
4026,
4027,
4028,
4029,
4030,
4031,
4032,
4033,
4034,
4035,
4036,
4037,
4038,
4040,
4041,
4042,
4043,
4044,
4045,
4046,
4047,
4052,
4053,
4054,
4055,
4074,
4075,
4080,
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,
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,
4327,
4329,
4339,
4341,
4343,
4345,
4347,
4349,
4351,
4353,
4355,
4357,
4359,
4361,
4363,
4365,
4367,
4369,
4371,
4373,
4375,
4377,
4379,
4381,
4383,
4386,
4388,
4417,
4434,
4463,
4466,
4469,
4470,
4472,
4475,
4480,
4482,
4483,
4490,
4491,
4492,
4493,
4494,
4495,
4496,
4497,
4498,
4499,
4500,
4501,
4502,
4503,
4504,
4505,
4506,
4507,
4508,
4509,
4510,
4511,
4512,
4513,
4514,
4515,
4516,
4517,
4518,
4519,
4520,
4521,
4522,
4523,
4524,
4525,
4526,
4527,
4528,
4529,
4530,
4531,
4532,
4533,
4534,
4535,
4536,
4537,
4538,
4539,
4540,
4541,
4542,
4543,
4544,
4545,
4546,
4547,
4548,
4549,
4550,
4551,
4552,
4553,
4554,
4555,
4557,
4558,
4568,
4569,
4570,
4571,
4572,
4573,
4574,
4575,
4576,
4577,
4578,
4579,
4580,
4581,
4582,
4583,
4584,
4585,
4586,
4587,
4588,
4589,
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,
4652,
4653,
4654,
4655,
4656,
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,
4766,
4767,
4768,
4769,
4770,
4771,
4772,
4773,
4774,
4775,
4776,
4777,
4778,
4779,
4780,
4781,
4782,
4783,
4784,
4785,
4786,
4787,
4788,
4789,
4790,
4791,
4792,
4793,
4794,
4795,
4796,
4797,
4798,
4799,
4800,
4801,
4802,
4803,
4804,
4805,
4806,
4807,
4808,
4809,
4810,
4811,
4812,
4813,
4814,
4815,
4816,
4817,
4818,
4819,
4820,
4821,
4822,
4823,
4824,
4839,
4855,
4856,
4857,
4858,
4859,
4860,
4861,
4862,
4863,
4864,
4865,
4866,
4867,
4868,
4869,
4870,
4871,
4872,
4873,
4874,
4875,
4876,
4877,
4878,
4879,
4880,
4883,
4885,
4887,
4889,
4891,
4893,
4895,
4898,
4900,
4901,
4902,
4903,
4904,
4907,
4909,
4921,
4923,
4925,
4927,
4929,
4931,
4933,
4935,
4937,
4939,
4941,
4943,
4945,
4947,
4949,
4951,
4953,
4955,
4957,
4959,
4961,
4963,
4965,
4967,
4969,
4971,
4973,
4975,
4977,
4979,
4981,
4983,
4985,
4987,
4989,
4991,
4993,
4995,
4997,
4999,
5012,
5013,
5017,
5048,
5105,
5106,
5107,
5108,
5109,
5110,
5111,
5112,
5113,
5114,
5115,
5116,
5117,
5118,
5119,
5120,
5121,
5122,
5123,
5124,
5125,
5126,
5127,
5128,
5129,
5130,
5132,
5167,
5168,
5169,
5170,
5171,
5172,
5173,
5174,
5175,
5176,
5177,
5178,
5179,
5180,
5181,
5182,
5183,
5184,
5185,
5186,
5187,
5188,
5224,
5228,
5229,
5233,
5245,
5246,
5251,
5252,
5253,
5254,
5255,
5256,
5257,
5258,
5259,
5263,
5264,
5269,
5270,
5271,
5272,
5273,
5274,
5275,
5801,
5802,
5803,
5804,
5808,
5809,
5810,
5811,
5812,
5813,
5814,
5815,
5816,
20004,
20005,
20006,
20007,
20008,
20009,
20010,
20011,
20012,
20013,
20014,
20015,
20016,
20017,
20018,
20019,
20020,
20021,
20022,
20023,
20024,
20025,
20026,
20027,
20028,
20029,
20030,
20031,
20032,
20064,
20065,
20066,
20067,
20068,
20069,
20070,
20071,
20072,
20073,
20074,
20075,
20076,
20077,
20078,
20079,
20080,
20081,
20082,
20083,
20084,
20085,
20086,
20087,
20088,
20089,
20090,
20091,
20092,
21413,
21414,
21415,
21416,
21417,
21418,
21419,
21420,
21421,
21422,
21423,
21453,
21454,
21455,
21456,
21457,
21458,
21459,
21460,
21461,
21462,
21463,
21473,
21474,
21475,
21476,
21477,
21478,
21479,
21480,
21481,
21482,
21483,
21896,
21897,
21898,
21899,
22171,
22172,
22173,
22174,
22175,
22176,
22177,
22181,
22182,
22183,
22184,
22185,
22186,
22187,
22191,
22192,
22193,
22194,
22195,
22196,
22197,
25884,
27205,
27206,
27207,
27208,
27209,
27210,
27211,
27212,
27213,
27214,
27215,
27216,
27217,
27218,
27219,
27220,
27221,
27222,
27223,
27224,
27225,
27226,
27227,
27228,
27229,
27230,
27231,
27232,
27391,
27392,
27393,
27394,
27395,
27396,
27397,
27398,
27492,
28402,
28403,
28404,
28405,
28406,
28407,
28408,
28409,
28410,
28411,
28412,
28413,
28414,
28415,
28416,
28417,
28418,
28419,
28420,
28421,
28422,
28423,
28424,
28425,
28426,
28427,
28428,
28429,
28430,
28431,
28432,
28462,
28463,
28464,
28465,
28466,
28467,
28468,
28469,
28470,
28471,
28472,
28473,
28474,
28475,
28476,
28477,
28478,
28479,
28480,
28481,
28482,
28483,
28484,
28485,
28486,
28487,
28488,
28489,
28490,
28491,
28492,
29701,
29702,
30161,
30162,
30163,
30164,
30165,
30166,
30167,
30168,
30169,
30170,
30171,
30172,
30173,
30174,
30175,
30176,
30177,
30178,
30179,
30800,
31251,
31252,
31253,
31254,
31255,
31256,
31257,
31258,
31259,
31275,
31276,
31277,
31278,
31279,
31281,
31282,
31283,
31284,
31285,
31286,
31287,
31288,
31289,
31290,
31700
])
class Crs(object):
"""Initialize a CRS construct
:param string crs: the Coordinate reference system. Examples:
* EPSG:<EPSG code>
* http://www.opengis.net/def/crs/EPSG/0/<EPSG code> (URI Style 1)
* http://www.opengis.net/gml/srs/epsg.xml#<EPSG code> (URI Style 2)
* urn:EPSG:geographicCRS:<epsg code>
* urn:ogc:def:crs:EPSG::4326
* urn:ogc:def:crs:EPSG:4326
:param string axisorder: Force / override axisorder ('xy' or 'yx')
"""
def __init__(self, crs, axisorder=None):
self.id = crs
self.naming_authority = None
self.category = None
self.type = None
self.authority = None
self.version = None
self.code = -1
self.axisorder = 'xy'
self.encoding = "code"
if axisorder is not None: # forced axisorder
self.axisorder = axisorder
values = self.id.split(':')
if self.id.find('/def/crs/') != -1: # URI Style 1
self.encoding = "uri"
vals = self.id.split('/')
self.authority = vals[5].upper()
self.code = int(vals[-1])
elif self.id.find('#') != -1: # URI Style 2
self.encoding = "uri"
vals = self.id.split('#')
self.authority = vals[0].split('/')[-1].split('.')[0].upper()
self.code = int(vals[-1])
elif len(values) > 2: # it's a URN style
self.naming_authority = values[1]
self.encoding = "urn"
if len(values) == 3: # bogus
pass
elif len(values) == 4:
self.type = values[2]
else:
self.category = values[2]
self.type = values[3]
self.authority = values[4].upper()
if len(values) == 7: # version, even if empty, is included
if values[5]:
self.version = values[5]
# code is always the last value
try:
self.code = int(values[-1])
except:
self.code = values[-1]
elif len(values) == 2: # it's an authority:code code
self.encoding = "code"
self.authority = values[0].upper()
self.code = int(values[1])
# if the user has not forced the axisorder,
# scan the list of codes that have an axis ordering of
# yx and set axis order accordingly
if axisorder is None:
if self.code in axisorder_yx:
self.axisorder = 'yx'
def getcode(self):
"""Create for example "EPSG:4326" string and return back
:returns: String code formated in "authority:code"
"""
if self.authority is not None and self.code is not None:
return '%s:%s' % (self.authority, self.code)
return None
def getcodeurn(self):
"""Create for example "urn:ogc:def:crs:EPSG::4326" string and return back
:returns: String code formated in "urn:ogc:def:authority:code"
"""
return 'urn:%s:def:crs:%s:%s:%s' % (
(self.naming_authority and self.naming_authority or "ogc"),
(self.authority or ""),
(self.version or ""),
(self.code or ""))
def getcodeuri1(self):
"""Create for example "http://www.opengis.net/def/crs/EPSG/0/4326"
string and return back
:returns: String code formated in "http://www.opengis.net/def/crs/EPSG/0/code"
"""
return 'http://www.opengis.net/def/crs/EPSG/0/%s' % self.code
def getcodeuri2(self):
"""Create for example "http://www.opengis.net/gml/srs/epsg.xml#4326"
string and return back
:returns: String code formated in "http://www.opengis.net/gml/srs/epsg.xml#code"
"""
return 'http://www.opengis.net/gml/srs/epsg.xml#%s' % self.code
def __eq__(self, other):
if isinstance(other, self.__class__):
return self.getcodeurn() == other.getcodeurn()
else:
return False
def __hash__(self):
return hash(repr(self))
def __repr__(self):
return self.getcodeurn()