c7e346cb4b
Patch by Raúl Marín Rodríguez Closes https://github.com/postgis/postgis/pull/213 Closes #4022 git-svn-id: http://svn.osgeo.org/postgis/trunk@16390 b70326c6-7e19-0410-871a-916f4a2858ee
69 lines
2.0 KiB
C
69 lines
2.0 KiB
C
/**********************************************************************
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*
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* PostGIS - Spatial Types for PostgreSQL
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* http://postgis.net
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*
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* PostGIS is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* PostGIS is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with PostGIS. If not, see <http://www.gnu.org/licenses/>.
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*
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**********************************************************************
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*
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* Copyright 2014 Kashif Rasul <kashif.rasul@gmail.com> and
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*
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**********************************************************************/
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#include <assert.h>
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#include "postgres.h"
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#include "utils/builtins.h"
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#include "../postgis_config.h"
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#include "lwgeom_pg.h"
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#include "liblwgeom.h"
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Datum line_from_encoded_polyline(PG_FUNCTION_ARGS);
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PG_FUNCTION_INFO_V1(line_from_encoded_polyline);
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Datum line_from_encoded_polyline(PG_FUNCTION_ARGS)
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{
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GSERIALIZED *geom;
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LWGEOM *lwgeom;
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text *encodedpolyline_input;
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char *encodedpolyline;
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int precision = 5;
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if (PG_ARGISNULL(0)) PG_RETURN_NULL();
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encodedpolyline_input = PG_GETARG_TEXT_P(0);
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encodedpolyline = text_to_cstring(encodedpolyline_input);
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if (PG_NARGS() > 1 && !PG_ARGISNULL(1))
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{
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precision = PG_GETARG_INT32(1);
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if ( precision < 0 ) precision = 5;
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}
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lwgeom = lwgeom_from_encoded_polyline(encodedpolyline, precision);
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if ( ! lwgeom ) {
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/* Shouldn't get here */
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elog(ERROR, "lwgeom_from_encoded_polyline returned NULL");
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PG_RETURN_NULL();
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}
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lwgeom_set_srid(lwgeom, 4326);
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geom = geometry_serialize(lwgeom);
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lwgeom_free(lwgeom);
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PG_RETURN_POINTER(geom);
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}
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