lwline_from_twkb_state()

static LWLINE* lwline_from_twkb_state ( twkb_parse_state *  s )

static

LINESTRING.

Definition at line 238 of file lwin_twkb.c.

References twkb_parse_state::check, twkb_parse_state::has_m, twkb_parse_state::has_z, twkb_parse_state::is_empty, LW_PARSER_CHECK_MINPOINTS, LWDEBUG, lwerror(), lwline_construct(), lwline_construct_empty(), twkb_parse_state::lwtype, lwtype_name(), POINTARRAY::npoints, ptarray_from_twkb_state(), SRID_UNKNOWN, and twkb_parse_state_uvarint().

Referenced by lwgeom_from_twkb_state(), and lwmultiline_from_twkb_state().

{
        uint32_t npoints;
        POINTARRAY *pa;

        LWDEBUG(2,"Entering lwline_from_twkb_state");

        if ( s->is_empty )
                return lwline_construct_empty(SRID_UNKNOWN, s->has_z, s->has_m);

        /* Read number of points */
        npoints = twkb_parse_state_uvarint(s);

        if ( npoints == 0 )
                return lwline_construct_empty(SRID_UNKNOWN, s->has_z, s->has_m);

        /* Read coordinates */
        pa = ptarray_from_twkb_state(s, npoints);

        if( pa == NULL )
                return lwline_construct_empty(SRID_UNKNOWN, s->has_z, s->has_m);

        if( s->check & LW_PARSER_CHECK_MINPOINTS && pa->npoints < 2 )
        {
                lwerror("%s must have at least two points", lwtype_name(s->lwtype));
                return NULL;
        }

        return lwline_construct(SRID_UNKNOWN, NULL, pa);
}

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