close_ogr.c

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/*!
   \file lib/vector/Vlib/close_ogr.c
 
   \brief Vector library - Close map (OGR)
 
   Higher level functions for reading/writing/manipulating vectors.
 
   (C) 2001-2009, 2012 by the GRASS Development Team
 
   This program is free software under the GNU General Public License
   (>=v2).  Read the file COPYING that comes with GRASS for details.
 
   \author Original author CERL, probably Dave Gerdes or Mike Higgins.
   \author Update to GRASS 5.7 Radim Blazek and Piero Cavalieri.
 */
 
#include <stdlib.h>
#include <grass/vector.h>
#include <grass/glocale.h>
 
#include <ogr_api.h>
 
#include "local_proto.h"
 
/*!
   \brief Close vector map (OGR dsn & layer) on level 1
 
   \param Map pointer to Map_info structure
 
   \return 0 on success
   \return non-zero on error
 */
int V1_close_ogr(struct Map_info *Map)
{
    struct Format_info_ogr *ogr_info;
 
    G_debug(3, "V1_close_ogr() name = %s mapset = %s", Map->name, Map->mapset);
 
    if (!VECT_OPEN(Map))
        return -1;
 
    ogr_info = &(Map->fInfo.ogr);
    if (Map->format != GV_FORMAT_OGR_DIRECT &&
        (Map->mode == GV_MODE_WRITE || Map->mode == GV_MODE_RW)) {
        /* write header */
        Vect__write_head(Map);
        if (G_find_file2("", "OGR", G_mapset())) {
            /* write frmt file for created PG-link */
            Vect_save_frmt(Map);
        }
    }
 
    if (ogr_info->feature_cache)
        OGR_F_Destroy(ogr_info->feature_cache);
 
    /* destroy OGR datasource */
    OGR_DS_Destroy(ogr_info->ds);
 
    Vect__free_cache(&(ogr_info->cache));
 
    /* close DB connection (for atgtributes) */
    if (ogr_info->dbdriver) {
        db_close_database_shutdown_driver(ogr_info->dbdriver);
    }
 
    G_free(ogr_info->driver_name);
    G_free(ogr_info->dsn);
    G_free(ogr_info->layer_name);
    if (ogr_info->layer_options)
        G_free_tokens(ogr_info->layer_options);
 
    return 0;
}
 
/*!
   \brief Close vector map on topological level (write out fidx file)
 
   \param Map pointer to Map_info structure
 
   \return 0 on success
   \return non-zero on error
 */
int V2_close_ogr(struct Map_info *Map)
{
    struct Format_info_ogr *ogr_info;
 
    G_debug(3, "V2_close_ogr() name = %s mapset = %s", Map->name, Map->mapset);
 
    if (!VECT_OPEN(Map))
        return -1;
 
    ogr_info = &(Map->fInfo.ogr);
 
    /* write fidx for maps in the current mapset */
    if (Vect_save_fidx(Map, &(ogr_info->offset)) != 1)
        G_warning(_("Unable to save feature index file for vector map <%s>"),
                  Map->name);
 
    Vect__free_offset(&(ogr_info->offset));
 
    return 0;
}