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/**********************************************************************
*
* PostGIS - Spatial Types for PostgreSQL
* http://postgis.net
*
* PostGIS is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* PostGIS is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with PostGIS. If not, see <http://www.gnu.org/licenses/>.
*
**********************************************************************
*
* Copyright (C) 2004 Refractions Research Inc.
*
**********************************************************************/
#include "lwgeom_log.h"
#include "liblwgeom.h"
#include <stdio.h>
#include <string.h>
/* Place to hold the ZM string used in other summaries */
static char tflags[6];
static char *
lwgeom_flagchars(LWGEOM *lwg)
{
int flagno = 0;
if ( FLAGS_GET_Z(lwg->flags) ) tflags[flagno++] = 'Z';
if ( FLAGS_GET_M(lwg->flags) ) tflags[flagno++] = 'M';
if ( FLAGS_GET_BBOX(lwg->flags) ) tflags[flagno++] = 'B';
if ( FLAGS_GET_GEODETIC(lwg->flags) ) tflags[flagno++] = 'G';
if ( lwg->srid != SRID_UNKNOWN ) tflags[flagno++] = 'S';
tflags[flagno] = '\0';
LWDEBUGF(4, "Flags: %s - returning %p", lwg->flags, tflags);
return tflags;
}
/*
* Returns an allocated string containing summary for the LWGEOM object
*/
static char *
lwpoint_summary(LWPOINT *point, int offset)
{
char *result;
char *pad="";
char *zmflags = lwgeom_flagchars((LWGEOM*)point);
size_t sz = 128+offset;
result = (char *)lwalloc(sz);
snprintf(result, sz, "%*.s%s[%s]",
offset, pad, lwtype_name(point->type),
zmflags);
return result;
}
static char *
lwline_summary(LWLINE *line, int offset)
{
char *result;
char *pad="";
char *zmflags = lwgeom_flagchars((LWGEOM*)line);
size_t sz = 128+offset;
result = (char *)lwalloc(sz);
snprintf(result, sz, "%*.s%s[%s] with %d points",
offset, pad, lwtype_name(line->type),
zmflags,
line->points->npoints);
return result;
}
static char *
lwcollection_summary(LWCOLLECTION *col, int offset)
{
size_t size = 128;
char *result;
char *tmp;
uint32_t i;
static char *nl = "\n";
char *pad="";
char *zmflags = lwgeom_flagchars((LWGEOM*)col);
LWDEBUG(2, "lwcollection_summary called");
result = (char *)lwalloc(size);
snprintf(result, size, "%*.s%s[%s] with %d element%s",
offset, pad, lwtype_name(col->type),
zmflags,
col->ngeoms,
col->ngeoms ?
( col->ngeoms > 1 ? "s:\n" : ":\n")
: "s");
for (i=0; i<col->ngeoms; i++)
{
tmp = lwgeom_summary(col->geoms[i], offset+2);
size += strlen(tmp)+1;
result = lwrealloc(result, size);
LWDEBUGF(4, "Reallocated %d bytes for result", size);
if ( i > 0 ) strcat(result,nl);
strcat(result, tmp);
lwfree(tmp);
}
LWDEBUG(3, "lwcollection_summary returning");
return result;
}
static char *
lwpoly_summary(LWPOLY *poly, int offset)
{
char tmp[256];
size_t size = 64*(poly->nrings+1)+128;
char *result;
uint32_t i;
char *pad="";
static char *nl = "\n";
char *zmflags = lwgeom_flagchars((LWGEOM*)poly);
LWDEBUG(2, "lwpoly_summary called");
result = (char *)lwalloc(size);
snprintf(result, size, "%*.s%s[%s] with %i ring%s",
offset, pad, lwtype_name(poly->type),
zmflags,
poly->nrings,
poly->nrings ?
( poly->nrings > 1 ? "s:\n" : ":\n")
: "s");
for (i=0; i<poly->nrings; i++)
{
snprintf(tmp, sizeof(tmp), "%s ring %i has %i points",
pad, i, poly->rings[i]->npoints);
if ( i > 0 ) strcat(result,nl);
strcat(result,tmp);
}
LWDEBUG(3, "lwpoly_summary returning");
return result;
}
char *
lwgeom_summary(const LWGEOM *lwgeom, int offset)
{
char *result;
switch (lwgeom->type)
{
case POINTTYPE:
return lwpoint_summary((LWPOINT *)lwgeom, offset);
case CIRCSTRINGTYPE:
case TRIANGLETYPE:
case LINETYPE:
return lwline_summary((LWLINE *)lwgeom, offset);
case POLYGONTYPE:
return lwpoly_summary((LWPOLY *)lwgeom, offset);
case TINTYPE:
case MULTISURFACETYPE:
case MULTICURVETYPE:
case CURVEPOLYTYPE:
case COMPOUNDTYPE:
case MULTIPOINTTYPE:
case MULTILINETYPE:
case MULTIPOLYGONTYPE:
case COLLECTIONTYPE:
return lwcollection_summary((LWCOLLECTION *)lwgeom, offset);
default:
result = (char *)lwalloc(256);
snprintf(result, 256, "Object is of unknown type: %d",
lwgeom->type);
return result;
}
return NULL;
}
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