rt_util_gdal_open()

GDALDatasetH rt_util_gdal_open	(	const char *	fn,
		GDALAccess	fn_access,
		int	shared
	)

Definition at line 491 of file rt_util.c.

  {
        char *vsi_options_str = rtoptions("gdal_vsi_options");
 
        /* Parse vsi options string */
        if (vsi_options_str && strlen(vsi_options_str) > 0) {
                size_t sz;
                char *olist[OPTION_LIST_SIZE];
                rtinfo("postgis.gdal_vsi_options is set");
                memset(olist, 0, sizeof(olist));
                option_list_parse(vsi_options_str, olist);
                sz = option_list_length(olist);
                if (sz % 2 == 0) {
                        size_t i;
                        for (i = 0; i < sz; i += 2)
                        {
                                char *key = olist[i];
                                char *val = olist[i+1];
                                /* GDAL_SKIP is where the disallowed drivers are set */
                                /* We cannot allow user-level over-ride of that config option */
                                if (strcmp(key, "gdal_skip") == 0) {
                                        rtwarn("Unable to set GDAL_SKIP config option");
                                        continue;
                                }
                                rtinfo("CPLSetConfigOption(%s)", key);
                                CPLSetConfigOption(key, val);
                        }
                }
        }
 
        unsigned int open_flags;
        assert(NULL != fn);
 
        if (gdal_enabled_drivers != NULL) {
                if (strstr(gdal_enabled_drivers, GDAL_DISABLE_ALL) != NULL) {
                        rterror("rt_util_gdal_open: Cannot open file. All GDAL drivers disabled");
                        return NULL;
                }
                else if (strstr(gdal_enabled_drivers, GDAL_ENABLE_ALL) != NULL) {
                        /* do nothing */
                }
                else if (
                        (strstr(fn, "/vsi") != NULL) &&
                        (strstr(fn, "/vsimem") == NULL) &&
                        (strstr(gdal_enabled_drivers, GDAL_VSICURL) == NULL)
                ) {
                        rterror("rt_util_gdal_open: Cannot open %s file. %s disabled", GDAL_VSICURL, GDAL_VSICURL);
                        return NULL;
                }
        }
 
        open_flags = GDAL_OF_RASTER
                | GDAL_OF_VERBOSE_ERROR
                | (fn_access == GA_Update ? GDAL_OF_UPDATE : 0)
                | (shared ? GDAL_OF_SHARED : 0);
 
        return GDALOpenEx(fn /* filename */,
                open_flags,
                NULL, /* allowed drivers */
                NULL, /* open options */
                NULL  /* sibling files */
                );
}

References GDAL_DISABLE_ALL, GDAL_ENABLE_ALL, gdal_enabled_drivers, GDAL_VSICURL, option_list_length(), option_list_parse(), OPTION_LIST_SIZE, rterror(), rtinfo(), rtoptions(), and rtwarn().

Referenced by RASTER_addBandOutDB(), RASTER_fromGDALRaster(), rt_band_load_offline_data(), rt_band_new_offline_from_path(), and test_util_gdal_open().

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