From: Sandro Santilli <strk@keybit.net>
Date: Tue, 17 Aug 2004 14:21:21 +0000 (+0000)
Subject: Added geometrytype(LWGEOM)
X-Git-Tag: pgis_0_9_1~116
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=13572134cc5a64137a6e18f6ded6435b7fbe1a2c;p=postgis

Added geometrytype(LWGEOM)


git-svn-id: http://svn.osgeo.org/postgis/trunk@678 b70326c6-7e19-0410-871a-916f4a2858ee
---

diff --git a/lwgeom/lwgeom.sql.in b/lwgeom/lwgeom.sql.in
index c94191714..50cd74208 100644
--- a/lwgeom/lwgeom.sql.in
+++ b/lwgeom/lwgeom.sql.in
@@ -330,8 +330,13 @@ CREATEFUNCTION getbbox(LWGEOM)
         AS '@MODULE_FILENAME@','LWGEOM_to_BOX2DFLOAT4'
         LANGUAGE 'C' WITH (isstrict,iscachable);
 
+CREATEFUNCTION geometrytype(LWGEOM)
+	RETURNS text
+	AS '@MODULE_FILENAME@', 'LWGEOM_getTYPE'
+	LANGUAGE 'C' WITH (isstrict);
 
-commit;
+
+COMMIT;
 
 begin;
 -- extra conversions (might not work if there's no postgis install)
diff --git a/lwgeom/lwgeom_functions_basic.c b/lwgeom/lwgeom_functions_basic.c
index e535ae73e..88ae6ae98 100644
--- a/lwgeom/lwgeom_functions_basic.c
+++ b/lwgeom/lwgeom_functions_basic.c
@@ -25,6 +25,7 @@
 #include "wktparse.h"
 
 Datum LWGEOM_getSRID(PG_FUNCTION_ARGS);
+Datum LWGEOM_getTYPE(PG_FUNCTION_ARGS);
 Datum LWGEOM_setSRID(PG_FUNCTION_ARGS);
 
 
@@ -101,3 +102,41 @@ Datum LWGEOM_setSRID(PG_FUNCTION_ARGS)
 	    PG_RETURN_POINTER(result);
 	}
 }
+
+//returns a string representation of this geometry's type
+PG_FUNCTION_INFO_V1(LWGEOM_getTYPE);
+Datum LWGEOM_getTYPE(PG_FUNCTION_ARGS)
+{
+	char *lwgeom = (char *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
+	char *text_ob = palloc(20+4);
+	char *result = text_ob+4;
+	int32 size;
+	unsigned char type;
+
+	type = lwgeom_getType(*(lwgeom+4));
+
+	memset(result, 0, 20);
+
+	if (type == POINTTYPE)
+		strcpy(result,"POINT");
+	else if (type == MULTIPOINTTYPE)
+		strcpy(result,"MULTIPOINT");
+	else if (type == LINETYPE)
+		strcpy(result,"LINESTRING");
+	else if (type == MULTILINETYPE)
+		strcpy(result,"MULTILINESTRING");
+	else if (type == POLYGONTYPE)
+		strcpy(result,"POLYGON");
+	else if (type == MULTIPOLYGONTYPE)
+		strcpy(result,"MULTIPOLYGON");
+	else if (type == COLLECTIONTYPE)
+		strcpy(result,"GEOMETRYCOLLECTION");
+	else
+		strcpy(result,"UNKNOWN");
+
+	size = strlen(result) +4 ;
+
+	memcpy(text_ob, &size,4); // size of string
+
+	PG_RETURN_POINTER(text_ob);
+}