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◆ ST_AsMARC21()
| Datum ST_AsMARC21 | ( | PG_FUNCTION_ARGS | ) |
Definition at line 51 of file lwgeom_out_marc21.c.
51 {
52 lwvarlena_t *marc21;
53 int32_t srid;
54 LWPROJ *lwproj;
55 LWGEOM *lwgeom;
56 //uint8_t is_latlong;
57 GSERIALIZED *gs = PG_GETARG_GSERIALIZED_P(0);
58 text *format_text_input = PG_GETARG_TEXT_P(1);
59 const char *format = text_to_cstring(format_text_input);
60
61 srid = gserialized_get_srid(gs);
62
64
65 PG_FREE_IF_COPY(gs, 0);
66 lwpgerror("ST_AsMARC21: Input geometry has unknown (%d) SRID", srid);
67 PG_RETURN_NULL();
68
69 }
70
72
73 PG_FREE_IF_COPY(gs, 0);
74 lwpgerror("ST_AsMARC21: Failure reading projections from spatial_ref_sys.");
75 PG_RETURN_NULL();
76
77 }
78
79 if (!lwproj_is_latlong(lwproj)) {
80
81 PG_FREE_IF_COPY(gs, 0);
82 lwpgerror("ST_AsMARC21: Unsupported SRID (%d). Only lon/lat coordinate systems are supported in MARC21/XML Documents.", srid);
83 PG_RETURN_NULL();
84 }
85
86
87 lwgeom = lwgeom_from_gserialized(gs);
88 marc21 = lwgeom_to_marc21(lwgeom, format);
89
90 if (marc21) PG_RETURN_TEXT_P(marc21);
91
92 PG_RETURN_NULL();
93}
int32_t gserialized_get_srid(const GSERIALIZED *g)
Extract the SRID from the serialized form (it is packed into three bytes so this is a handy function)...
Definition gserialized.c:155
LWGEOM * lwgeom_from_gserialized(const GSERIALIZED *g)
Allocate a new LWGEOM from a GSERIALIZED.
Definition gserialized.c:268
lwvarlena_t * lwgeom_to_marc21(const LWGEOM *geom, const char *format)
Definition lwgeom_out_marc21.c:96
Definition liblwgeom.h:443
Definition liblwgeom.h:457
Definition liblwgeom.h:45
Definition liblwgeom.h:306
References gserialized_get_srid(), LW_FAILURE, lwgeom_from_gserialized(), lwgeom_to_marc21(), and SRID_UNKNOWN.
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