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main.c
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main.c
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/****************************************************************
*
* MODULE: v.in.ogr
*
* AUTHOR(S): Radim Blazek
* Markus Neteler (spatial parm, projection support)
* Paul Kelly (projection support)
* Markus Metz
*
* PURPOSE: Import vector data with OGR
*
* COPYRIGHT: (C) 2003-2016 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.
*
* TODO: - make fixed field length of OFTIntegerList dynamic
* - several other TODOs below
**************************************************************/
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <grass/gis.h>
#include <grass/dbmi.h>
#include <grass/vector.h>
#include <grass/glocale.h>
#include <gdal_version.h> /* needed for OFTDate */
#include <cpl_conv.h>
#include "global.h"
#include "pavl.h"
#ifndef MAX
#define MIN(a, b) ((a < b) ? a : b)
#define MAX(a, b) ((a > b) ? a : b)
#endif
int n_polygons;
int n_polygon_boundaries;
double split_distance;
int geom(OGRGeometryH hGeomAny, struct Map_info *Map, int field, int cat,
double min_area, int type, int mk_centr);
int centroid(OGRGeometryH hGeomAny, CENTR *Centr, struct spatial_index *Sindex,
int field, int cat, double min_area, int type);
int poly_count(OGRGeometryH hGeom, int line2boundary);
char *get_datasource_name(const char *, int);
void convert_osm_lines(struct Map_info *Map, double snap);
int cmp_layer_srs(GDALDatasetH, int, int *, char **, char *);
void check_projection(struct Cell_head *cellhd, GDALDatasetH hDS, int layer,
char *geom_col, char *outloc, int create_only,
int override, int check_only);
int create_spatial_filter(GDALDatasetH Ogr_ds, OGRGeometryH *, int, int *,
char **, double *, double *, double *, double *, int,
struct Option *);
struct OGR_iterator {
GDALDatasetH Ogr_ds;
char *dsn;
int nlayers;
int has_nonempty_layers;
int ogr_interleaved_reading;
OGRLayerH Ogr_layer;
OGRFeatureDefnH Ogr_featuredefn;
int requested_layer;
int curr_layer;
int done;
};
void OGR_iterator_init(struct OGR_iterator *OGR_iter, GDALDatasetH Ogr_ds,
char *dsn, int nlayers, int ogr_interleaved_reading);
void OGR_iterator_reset(struct OGR_iterator *OGR_iter);
OGRFeatureH ogr_getnextfeature(struct OGR_iterator *, int, char *, OGRGeometryH,
const char *);
struct grass_col_info {
int idx; /* index for create table */
const char *name;
const char *type;
};
/* for qsort: compare columns by name */
int cmp_col_name(const void *a, const void *b)
{
struct grass_col_info *ca = (struct grass_col_info *)a;
struct grass_col_info *cb = (struct grass_col_info *)b;
return strcmp(ca->name, cb->name);
}
/* for qsort: compare columns by index */
int cmp_col_idx(const void *a, const void *b)
{
struct grass_col_info *ca = (struct grass_col_info *)a;
struct grass_col_info *cb = (struct grass_col_info *)b;
return (ca->idx - cb->idx);
}
struct fid_cat {
grass_int64 fid;
int cat;
};
static int cmp_fid_cat(const void *a, const void *b)
{
struct fid_cat *aa = (struct fid_cat *)a;
struct fid_cat *bb = (struct fid_cat *)b;
return (aa->fid < bb->fid ? -1 : (aa->fid > bb->fid));
}
static void free_fid_cat(void *p)
{
G_free(p);
}
int main(int argc, char *argv[])
{
struct GModule *module;
struct _param {
struct Option *dsn, *out, *layer, *spat, *where, *min_area, *cfg, *doo;
struct Option *snap, *type, *outloc, *cnames, *encoding, *key, *geom;
} param;
struct _flag {
struct Flag *list, *no_clean, *force2d, *notab, *region, *over, *extend,
*formats, *tolower, *no_import, *proj;
} flag;
char *desc;
int i, j, layer, nogeom, ncnames, igeom;
double xmin, ymin, xmax, ymax;
int ncols = 0, type;
double min_area, snap;
char buf[DB_SQL_MAX], namebuf[1024];
char *sqlbuf;
size_t sqlbufsize;
char *separator;
struct Cell_head cellhd, cur_wind;
/* Vector */
struct Map_info Map, Tmp, *Out;
int cat;
int delete_table = FALSE; /* for external output format only */
/* Attributes */
struct field_info *Fi = NULL;
dbDriver *driver = NULL;
dbString sql, strval;
int with_z, input3d;
const char **key_column;
int *key_idx;
/* OGR */
GDALDatasetH Ogr_ds;
const char *ogr_driver_name;
int ogr_interleaved_reading;
OGRLayerH Ogr_layer;
OGRFieldDefnH Ogr_field;
char *Ogr_fieldname;
OGRFieldType Ogr_ftype;
OGRFeatureH Ogr_feature;
OGRFeatureDefnH Ogr_featuredefn;
OGRGeometryH Ogr_geometry, *poSpatialFilter;
const char *attr_filter;
struct OGR_iterator OGR_iter;
int OFTIntegerListlength;
char *dsn, **doo;
const char *driver_name;
const char *datetime_type;
char *output;
char **layer_names; /* names of layers to be imported */
int *layers; /* layer indexes */
int nlayers; /* number of layers to import */
char **available_layer_names; /* names of layers to be imported */
int navailable_layers;
int layer_id;
unsigned int feature_count;
GIntBig *n_features, n_import_features;
int overwrite;
double area_size;
int use_tmp_vect;
int ncentr, n_overlaps;
int failed_centr, err_boundaries, err_centr_out, err_centr_dupl;
struct bound_box box;
struct pavl_table **fid_cat_tree;
struct fid_cat *new_fid_cat, find_fid_cat;
xmin = ymin = 1.0;
xmax = ymax = 0.0;
Ogr_ds = NULL;
poSpatialFilter = NULL;
OFTIntegerListlength = 255; /* hack due to limitation in OGR */
area_size = 0.0;
use_tmp_vect = FALSE;
G_gisinit(argv[0]);
module = G_define_module();
G_add_keyword(_("vector"));
G_add_keyword(_("import"));
G_add_keyword("OGR");
G_add_keyword(_("topology"));
G_add_keyword(_("geometry"));
G_add_keyword(_("snapping"));
G_add_keyword(_("create project"));
module->description =
_("Imports vector data into a GRASS vector map using OGR library.");
param.dsn = G_define_option();
param.dsn->key = "input";
param.dsn->type = TYPE_STRING;
param.dsn->required = YES;
param.dsn->label = _("Name of OGR datasource to be imported");
param.dsn->description =
_("Examples:\n"
"\t\tESRI Shapefile: directory containing shapefiles\n"
"\t\tMapInfo File: directory containing mapinfo files");
param.dsn->gisprompt = "old,datasource,datasource";
param.cfg = G_define_option();
param.cfg->key = "gdal_config";
param.cfg->type = TYPE_STRING;
param.cfg->required = NO;
param.cfg->label = _("GDAL configuration options");
param.cfg->description = _("Comma-separated list of key=value pairs");
param.doo = G_define_option();
param.doo->key = "gdal_doo";
param.doo->type = TYPE_STRING;
param.doo->required = NO;
param.doo->label = _("GDAL dataset open options");
param.doo->description = _("Comma-separated list of key=value pairs");
param.layer = G_define_option();
param.layer->key = "layer";
param.layer->type = TYPE_STRING;
param.layer->required = NO;
param.layer->multiple = YES;
param.layer->label =
_("OGR layer name. If not given, all available layers are imported");
param.layer->description = _("Examples:\n"
"\t\tESRI Shapefile: shapefile name\n"
"\t\tMapInfo File: mapinfo file name");
param.layer->guisection = _("Input");
param.layer->gisprompt = "old,datasource_layer,datasource_layer";
param.out = G_define_standard_option(G_OPT_V_OUTPUT);
param.out->required = NO;
param.out->guisection = _("Output");
param.spat = G_define_option();
param.spat->key = "spatial";
param.spat->type = TYPE_DOUBLE;
param.spat->multiple = YES;
param.spat->required = NO;
param.spat->key_desc = "xmin,ymin,xmax,ymax";
param.spat->label = _("Import subregion only");
param.spat->guisection = _("Selection");
param.spat->description =
_("Format: xmin,ymin,xmax,ymax - usually W,S,E,N");
param.where = G_define_standard_option(G_OPT_DB_WHERE);
param.where->guisection = _("Selection");
param.min_area = G_define_option();
param.min_area->key = "min_area";
param.min_area->type = TYPE_DOUBLE;
param.min_area->required = NO;
param.min_area->answer = "0.0001";
param.min_area->label =
_("Minimum size of area to be imported (square meters)");
param.min_area->guisection = _("Selection");
param.min_area->description =
_("Smaller areas and "
"islands are ignored. Should be greater than snap^2");
param.type = G_define_standard_option(G_OPT_V_TYPE);
param.type->options = "point,line,boundary,centroid";
param.type->answer = "";
param.type->description = _("Optionally change default input type");
desc = NULL;
G_asprintf(&desc, "point;%s;line;%s;boundary;%s;centroid;%s",
_("import area centroids as points"),
_("import area boundaries as lines"),
_("import lines as area boundaries"),
_("import points as centroids"));
param.type->descriptions = desc;
param.type->guisection = _("Selection");
param.snap = G_define_option();
param.snap->key = "snap";
param.snap->type = TYPE_DOUBLE;
param.snap->required = NO;
param.snap->answer = "-1";
param.snap->label = _("Snapping threshold for boundaries (map units)");
param.snap->description = _("'-1' for no snap");
param.outloc = G_define_option();
param.outloc->key = "project";
param.outloc->type = TYPE_STRING;
param.outloc->required = NO;
param.outloc->description = _("Name for new project (location) to create");
param.outloc->key_desc = "name";
param.outloc->guisection = _("Output");
param.cnames = G_define_standard_option(G_OPT_DB_COLUMNS);
param.cnames->description =
_("List of column names to be used instead of original names, "
"first is used for category column");
param.cnames->guisection = _("Attributes");
param.encoding = G_define_option();
param.encoding->key = "encoding";
param.encoding->type = TYPE_STRING;
param.encoding->required = NO;
param.encoding->label = _("Encoding value for attribute data");
param.encoding->description = _("Overrides encoding interpretation, useful "
"when importing ESRI Shapefile");
param.encoding->guisection = _("Attributes");
param.key = G_define_option();
param.key->key = "key";
param.key->type = TYPE_STRING;
param.key->required = NO;
param.key->label = _("Name of column used for categories");
param.key->description = _("If not given, categories are generated as "
"unique values and stored in 'cat' column");
param.key->guisection = _("Attributes");
param.geom = G_define_standard_option(G_OPT_DB_COLUMN);
param.geom->key = "geometry";
param.geom->label = _("Name of geometry column");
param.geom->description =
_("If not given, all geometry columns from the input are used");
param.geom->guisection = _("Selection");
flag.formats = G_define_flag();
flag.formats->key = 'f';
flag.formats->description = _("List supported OGR formats and exit");
flag.formats->guisection = _("Print");
flag.formats->suppress_required = YES;
flag.list = G_define_flag();
flag.list->key = 'l';
flag.list->description =
_("List available OGR layers in data source and exit");
flag.list->guisection = _("Print");
flag.list->suppress_required = YES;
/* if using -c, you lose topological information ! */
flag.no_clean = G_define_flag();
flag.no_clean->key = 'c';
flag.no_clean->description = _("Do not clean polygons (not recommended)");
flag.no_clean->guisection = _("Output");
flag.force2d = G_define_flag();
flag.force2d->key = '2';
flag.force2d->label = _("Force 2D output even if input is 3D");
flag.force2d->description =
_("Useful if input is 3D but all z coordinates are identical");
flag.force2d->guisection = _("Output");
flag.notab = G_define_standard_flag(G_FLG_V_TABLE);
flag.notab->guisection = _("Attributes");
flag.over = G_define_flag();
flag.over->key = 'o';
flag.over->label =
_("Override projection check (use current project's CRS)");
flag.over->description =
_("Assume that the dataset has the same "
"coordinate reference system (CRS) as the current project");
flag.proj = G_define_flag();
flag.proj->key = 'j';
flag.proj->description = _("Perform projection check only and exit");
flag.proj->suppress_required = YES;
G_option_requires(flag.proj, param.dsn, NULL);
flag.region = G_define_flag();
flag.region->key = 'r';
flag.region->guisection = _("Selection");
flag.region->description = _("Limit import to the current region");
flag.extend = G_define_flag();
flag.extend->key = 'e';
flag.extend->label = _("Extend region extents based on new dataset");
flag.extend->description =
_("Also updates the default region if in the PERMANENT mapset");
flag.tolower = G_define_flag();
flag.tolower->key = 'w';
flag.tolower->description =
_("Change column names to lowercase characters");
flag.tolower->guisection = _("Attributes");
flag.no_import = G_define_flag();
flag.no_import->key = 'i';
flag.no_import->description =
_("Create the project specified by the \"project\" parameter and exit."
" Do not import the vector data.");
flag.no_import->guisection = _("Output");
/* The parser checks if the map already exists in current mapset, this is
* wrong if location options is used, so we switch out the check and do it
* in the module after the parser */
overwrite = G_check_overwrite(argc, argv);
if (G_parser(argc, argv))
exit(EXIT_FAILURE);
GDALAllRegister();
G_debug(1, "GDAL version %d", GDAL_VERSION_NUM);
/* list supported formats */
if (flag.formats->answer) {
int iDriver;
G_message(_("Supported formats:"));
for (iDriver = 0; iDriver < GDALGetDriverCount(); iDriver++) {
GDALDriverH hDriver = GDALGetDriver(iDriver);
const char *pszRWFlag;
if (!GDALGetMetadataItem(hDriver, GDAL_DCAP_VECTOR, NULL))
continue;
if (GDALGetMetadataItem(hDriver, GDAL_DCAP_CREATE, NULL))
pszRWFlag = "rw+";
else if (GDALGetMetadataItem(hDriver, GDAL_DCAP_CREATECOPY, NULL))
pszRWFlag = "rw";
else
pszRWFlag = "ro";
fprintf(stdout, " %s (%s): %s\n", GDALGetDriverShortName(hDriver),
pszRWFlag, GDALGetDriverLongName(hDriver));
}
exit(EXIT_SUCCESS);
}
if (param.dsn->answer == NULL) {
G_fatal_error(_("Required parameter <%s> not set"), param.dsn->key);
}
driver_name = db_get_default_driver_name();
if (driver_name && strcmp(driver_name, "pg") == 0)
datetime_type = "timestamp";
else if (driver_name && strcmp(driver_name, "dbf") == 0)
datetime_type = "varchar(22)";
else
datetime_type = "datetime";
dsn = NULL;
if (param.dsn->answer)
dsn = G_store(param.dsn->answer);
min_area = atof(param.min_area->answer);
snap = atof(param.snap->answer);
type = Vect_option_to_types(param.type);
ncnames = 0;
if (param.cnames->answers) {
i = 0;
while (param.cnames->answers[i]) {
G_strip(param.cnames->answers[i]);
G_strchg(param.cnames->answers[i], ' ', '\0');
ncnames++;
i++;
}
}
/* set up encoding for attribute data */
if (param.encoding->answer) {
char *encbuf, *encp;
int len;
len = strlen("SHAPE_ENCODING") + strlen(param.encoding->answer) + 2;
encbuf = G_malloc(len * sizeof(char));
/* -> Esri Shapefile */
sprintf(encbuf, "SHAPE_ENCODING=%s", param.encoding->answer);
encp = G_store(encbuf);
putenv(encp);
/* -> DXF */
sprintf(encbuf, "DXF_ENCODING=%s", param.encoding->answer);
encp = G_store(encbuf);
putenv(encp);
/* todo: others ? */
G_free(encbuf);
}
/* GDAL configuration options */
if (param.cfg->answer) {
char **tokens, *tok, *key, *value;
int ntokens;
tokens = G_tokenize(param.cfg->answer, ",");
ntokens = G_number_of_tokens(tokens);
for (i = 0; i < ntokens; i++) {
G_debug(1, "%d=[%s]", i, tokens[i]);
tok = G_store(tokens[i]);
G_squeeze(tok);
key = tok;
value = strstr(tok, "=");
if (value) {
*value = '\0';
value++;
CPLSetConfigOption(key, value);
}
G_free(tok);
}
G_free_tokens(tokens);
}
/* GDAL dataset open options */
doo = NULL;
if (param.doo->answer) {
char **tokens;
int ntokens;
tokens = G_tokenize(param.doo->answer, ",");
ntokens = G_number_of_tokens(tokens);
doo = G_malloc(sizeof(char *) * (ntokens + 1));
for (i = 0; i < ntokens; i++) {
G_debug(1, "%d=[%s]", i, tokens[i]);
doo[i] = G_store(tokens[i]);
}
G_free_tokens(tokens);
doo[ntokens] = NULL;
}
/* open OGR DSN */
Ogr_ds = NULL;
if (strlen(dsn) > 0) {
Ogr_ds =
GDALOpenEx(dsn, GDAL_OF_VECTOR, NULL, (const char **)doo, NULL);
}
if (Ogr_ds == NULL)
G_fatal_error(_("Unable to open data source <%s>"), dsn);
/* driver name */
ogr_driver_name = GDALGetDriverShortName(GDALGetDatasetDriver(Ogr_ds));
G_verbose_message(_("Using OGR driver '%s/%s'"), ogr_driver_name,
GDALGetDriverLongName(GDALGetDatasetDriver(Ogr_ds)));
/* OGR interleaved reading */
ogr_interleaved_reading = 0;
if (strcmp(ogr_driver_name, "OSM") == 0) {
/* re-open OGR DSN */
ogr_interleaved_reading = 1;
}
if (strcmp(ogr_driver_name, "GMLAS") == 0)
ogr_interleaved_reading = 1;
if (ogr_interleaved_reading)
G_verbose_message(_("Using interleaved reading mode"));
if (param.geom->answer) {
if (!GDALDatasetTestCapability(Ogr_ds,
ODsCCreateGeomFieldAfterCreateLayer)) {
G_warning(_("Option <%s> will be ignored. OGR doesn't support it "
"for selected format (%s)."),
param.geom->key, ogr_driver_name);
param.geom->answer = NULL;
}
}
/* check encoding for given driver */
if (param.encoding->answer) {
if (strcmp(ogr_driver_name, "ESRI Shapefile") != 0 &&
strcmp(ogr_driver_name, "DXF") != 0)
G_warning(_("Encoding value not supported by OGR driver <%s>"),
ogr_driver_name);
}
navailable_layers = GDALDatasetGetLayerCount(Ogr_ds);
if (navailable_layers < 1)
G_fatal_error(_("No OGR layers available"));
/* make a list of available layers */
available_layer_names =
(char **)G_malloc(navailable_layers * sizeof(char *));
if (flag.list->answer) {
G_message(_("Data source <%s> (format '%s') contains %d layers:"), dsn,
ogr_driver_name, navailable_layers);
}
for (i = 0; i < navailable_layers; i++) {
Ogr_layer = GDALDatasetGetLayer(Ogr_ds, i);
available_layer_names[i] = G_store((char *)OGR_L_GetName(Ogr_layer));
if (flag.list->answer)
fprintf(stdout, "%s\n", available_layer_names[i]);
}
if (flag.list->answer) {
fflush(stdout);
GDALClose(Ogr_ds);
exit(EXIT_SUCCESS);
}
/* Make a list of layers to be imported */
if (param.layer->answer) { /* From option */
nlayers = 0;
while (param.layer->answers[nlayers])
nlayers++;
layer_names = (char **)G_malloc(nlayers * sizeof(char *));
layers = (int *)G_malloc(nlayers * sizeof(int));
for (i = 0; i < nlayers; i++) {
layer_names[i] = G_store(param.layer->answers[i]);
/* Find it in the source */
layers[i] = -1;
for (j = 0; j < navailable_layers; j++) {
if (strcmp(available_layer_names[j], layer_names[i]) == 0) {
layers[i] = j;
break;
}
}
if (layers[i] == -1)
G_fatal_error(_("Layer <%s> not available"), layer_names[i]);
}
}
else { /* use list of all layers */
nlayers = navailable_layers;
layer_names = available_layer_names;
layers = (int *)G_malloc(nlayers * sizeof(int));
for (i = 0; i < nlayers; i++)
layers[i] = i;
}
/* compare SRS of the different layers to be imported */
if (cmp_layer_srs(Ogr_ds, nlayers, layers, layer_names,
param.geom->answer)) {
GDALClose(Ogr_ds);
G_fatal_error(_("Detected different projections of input layers. "
"Input layers must be imported separately."));
}
G_get_window(&cellhd);
cellhd.north = 1.;
cellhd.south = 0.;
cellhd.west = 0.;
cellhd.east = 1.;
cellhd.top = 1.;
cellhd.bottom = 0.;
cellhd.rows = 1;
cellhd.rows3 = 1;
cellhd.cols = 1;
cellhd.cols3 = 1;
cellhd.depths = 1;
cellhd.ns_res = 1.;
cellhd.ns_res3 = 1.;
cellhd.ew_res = 1.;
cellhd.ew_res3 = 1.;
cellhd.tb_res = 1.;
/* check projection match */
check_projection(&cellhd, Ogr_ds, layers[0], param.geom->answer,
param.outloc->answer, flag.no_import->answer,
flag.over->answer, flag.proj->answer);
/* get output name */
if (param.out->answer) {
output = G_store(param.out->answer);
}
else {
output = G_store(layer_names[0]);
}
/* check output name */
if (Vect_legal_filename(output) != 1) {
GDALClose(Ogr_ds);
G_fatal_error(_("Illegal output name <%s>"), output);
}
/* Check if the output map exists */
if (G_find_vector2(output, G_mapset()) && !overwrite) {
GDALClose(Ogr_ds);
G_fatal_error(_("Vector map <%s> already exists"), output);
}
/* report back if several layers will be imported because
* none has been selected */
if (nlayers > 1 && param.layer->answer == NULL) {
void (*msg_fn)(const char *, ...);
/* make it a warning if output name has not been specified */
if (param.out->answer)
msg_fn = G_important_message;
else
msg_fn = G_warning;
msg_fn(
_("All available OGR layers will be imported into vector map <%s>"),
output);
}
/* attribute filter */
attr_filter = param.where->answer;
/* create spatial filters */
if (param.outloc->answer && flag.region->answer) {
G_warning(_("When creating a new project, the current region "
"can not be used as spatial filter, disabling"));
flag.region->answer = 0;
}
if (flag.region->answer && param.spat->answer)
G_fatal_error(_("Select either the current region flag or the spatial "
"option, not both"));
poSpatialFilter = G_malloc(nlayers * sizeof(OGRGeometryH));
if (create_spatial_filter(Ogr_ds, poSpatialFilter, nlayers, layers,
layer_names, &xmin, &ymin, &xmax, &ymax,
flag.region->answer, param.spat) ||
attr_filter) {
for (layer = 0; layer < nlayers; layer++) {
Ogr_layer = GDALDatasetGetLayer(Ogr_ds, layers[layer]);
if (param.geom->answer) {
Ogr_featuredefn = OGR_L_GetLayerDefn(Ogr_layer);
igeom = OGR_FD_GetGeomFieldIndex(Ogr_featuredefn,
param.geom->answer);
if (igeom < 0)
G_fatal_error(
_("Geometry column <%s> not found in input layer <%s>"),
param.geom->answer, OGR_L_GetName(Ogr_layer));
OGR_L_SetSpatialFilterEx(Ogr_layer, igeom,
poSpatialFilter[layer]);
}
else {
OGR_L_SetSpatialFilter(Ogr_layer, poSpatialFilter[layer]);
}
if (OGR_L_SetAttributeFilter(Ogr_layer, attr_filter) != OGRERR_NONE)
G_fatal_error(_("Error setting attribute filter '%s'"),
attr_filter);
}
}
/* suppress boundary splitting ? */
if (flag.no_clean->answer || xmin >= xmax || ymin >= ymax) {
split_distance = -1.;
area_size = -1;
}
else {
split_distance = 0.;
area_size = sqrt((xmax - xmin) * (ymax - ymin));
}
db_init_string(&sql);
db_init_string(&strval);
n_features = (GIntBig *)G_malloc(nlayers * sizeof(GIntBig));
OGR_iterator_init(&OGR_iter, Ogr_ds, dsn, navailable_layers,
ogr_interleaved_reading);
/* check if input id 3D and if we need a tmp vector */
/* estimate distance for boundary splitting --> */
n_polygon_boundaries = 0;
input3d = 0;
for (layer = 0; layer < nlayers; layer++) {
GIntBig ogr_feature_count;
n_features[layer] = 0;
layer_id = layers[layer];
Ogr_layer = GDALDatasetGetLayer(Ogr_ds, layer_id);
Ogr_featuredefn = OGR_L_GetLayerDefn(Ogr_layer);
igeom = -1;
if (param.geom->answer) {
igeom =
OGR_FD_GetGeomFieldIndex(Ogr_featuredefn, param.geom->answer);
if (igeom < 0)
G_fatal_error(
_("Geometry column <%s> not found in OGR layer <%s>"),
param.geom->answer, OGR_L_GetName(Ogr_layer));
}
feature_count = 0;
ogr_feature_count = 0;
if (n_features[layer] == 0)
ogr_feature_count = OGR_L_GetFeatureCount(Ogr_layer, 1);
if (ogr_feature_count > 0)
n_features[layer] = ogr_feature_count;
/* count polygons and isles */
G_message(_("Check if OGR layer <%s> contains polygons..."),
layer_names[layer]);
while ((Ogr_feature = ogr_getnextfeature(
&OGR_iter, layer_id, layer_names[layer],
poSpatialFilter[layer], attr_filter)) != NULL) {
if (ogr_feature_count > 0)
G_percent(feature_count++, n_features[layer],
1); /* show something happens */
if (ogr_feature_count <= 0)
n_features[layer]++;
/* Geometry */
Ogr_featuredefn = OGR_iter.Ogr_featuredefn;
for (i = 0; i < OGR_FD_GetGeomFieldCount(Ogr_featuredefn); i++) {
if (igeom > -1 && i != igeom)
continue; /* use only geometry defined via param.geom */
Ogr_geometry = OGR_F_GetGeomFieldRef(Ogr_feature, i);
if (Ogr_geometry != NULL) {
Ogr_geometry =
OGR_G_GetLinearGeometry(Ogr_geometry, 0, NULL);
}
if (Ogr_geometry != NULL) {
if (!flag.no_clean->answer)
poly_count(Ogr_geometry, (type & GV_BOUNDARY));
if (OGR_G_GetCoordinateDimension(Ogr_geometry) > 2)
input3d = 1;
OGR_G_DestroyGeometry(Ogr_geometry);
}
}
OGR_F_Destroy(Ogr_feature);
}
G_percent(1, 1, 1);
}
n_import_features = 0;
for (i = 0; i < nlayers; i++)
n_import_features += n_features[i];
if (nlayers > 1)
G_message("Importing %lld features", n_import_features);
G_debug(1, "n polygon boundaries: %d", n_polygon_boundaries);
if (area_size > 0 && n_polygon_boundaries > 50) {
split_distance = area_size / log(n_polygon_boundaries);
/* divisor is the handle: increase divisor to decrease split_distance */
split_distance = split_distance / 16.;
G_debug(1, "root of area size: %f", area_size);
G_verbose_message(_("Boundary splitting distance in map units: %G"),
split_distance);
}
/* <-- estimate distance for boundary splitting */
use_tmp_vect =
(n_polygon_boundaries > 0) || (strcmp(ogr_driver_name, "OSM") == 0);
G_debug(1, "Input is 3D ? %s", (input3d == 0 ? "yes" : "no"));
with_z = input3d;
if (with_z)
with_z = !flag.force2d->answer;
/* open output vector */
/* strip any @mapset from vector output name */
G_find_vector(output, G_mapset());
if (Vect_open_new(&Map, output, with_z) < 0)
G_fatal_error(_("Unable to create vector map <%s>"), output);
Out = ⤅
if (!flag.no_clean->answer) {
if (use_tmp_vect) {
/* open temporary vector, do the work in the temporary vector
* at the end copy alive lines to output vector
* in case of polygons this reduces the coor file size by a factor
* of 2 to 5 only needed when cleaning polygons */
if (Vect_open_tmp_new(&Tmp, NULL, with_z) < 0)
G_fatal_error(_("Unable to create temporary vector map"));
G_verbose_message(_("Using temporary vector <%s>"),
Vect_get_name(&Tmp));
Out = &Tmp;
}
}
Vect_hist_command(&Map);
ncentr = n_overlaps = n_polygons = 0;
failed_centr = 0;
G_begin_polygon_area_calculations(); /* Used in geom() and centroid() */
/* Points and lines are written immediately with categories. Boundaries of
* polygons are written to the vector then cleaned and centroids are
* calculated for all areas in clean vector. Then second pass through finds
* all centroids in each polygon feature and adds its category to the
* centroid. The result is that one centroid may have 0, 1 ore more
* categories of one ore more (more input layers) fields. */
/* get input column to use for categoy values, create tables */
OGR_iterator_reset(&OGR_iter);
key_column = G_malloc(nlayers * sizeof(char *));
key_idx = G_malloc(nlayers * sizeof(int));
for (layer = 0; layer < nlayers; layer++) {
key_column[layer] = GV_KEY_COLUMN;
key_idx[layer] = -2; /* -1 for fid column */
layer_id = layers[layer];
Ogr_layer = GDALDatasetGetLayer(Ogr_ds, layer_id);
Ogr_featuredefn = OGR_L_GetLayerDefn(Ogr_layer);
if (param.key->answer) {
/* use existing column for category values */
const char *fid_column;
fid_column = OGR_L_GetFIDColumn(Ogr_layer);
if (fid_column) {
key_column[layer] = G_store(fid_column);
key_idx[layer] = -1;
}
if (!fid_column || strcmp(fid_column, param.key->answer) != 0) {
key_idx[layer] =
OGR_FD_GetFieldIndex(Ogr_featuredefn, param.key->answer);
if (key_idx[layer] == -1)
G_fatal_error(
_("Key column '%s' not found in input layer <%s>"),
param.key->answer, layer_names[layer]);
}
if (key_idx[layer] > -1) {
/* check if the field is integer */
Ogr_field =
OGR_FD_GetFieldDefn(Ogr_featuredefn, key_idx[layer]);
Ogr_ftype = OGR_Fld_GetType(Ogr_field);
if (!(Ogr_ftype == OFTInteger || Ogr_ftype == OFTInteger64)) {
G_fatal_error(
_("Key column '%s' in input layer <%s> is not integer"),
param.key->answer, layer_names[layer]);
}
key_column[layer] = G_store(OGR_Fld_GetNameRef(Ogr_field));
}
}
/* Add DB link and create table */
if (!flag.notab->answer) {
int i_out, ncols_out, done;
struct grass_col_info *col_info;
G_important_message(_("Creating attribute table for layer <%s>..."),
layer_names[layer]);
if (nlayers == 1) { /* one layer only */
Fi = Vect_default_field_info(&Map, layer + 1, NULL, GV_1TABLE);
}
else {
Fi = Vect_default_field_info(&Map, layer + 1, NULL, GV_MTABLE);
}
if (ncnames > 0) {
key_column[layer] = param.cnames->answers[0];
}
Vect_map_add_dblink(&Map, layer + 1, layer_names[layer], Fi->table,
key_column[layer], Fi->database, Fi->driver);
ncols = OGR_FD_GetFieldCount(Ogr_featuredefn);
G_debug(2, "%d columns", ncols);
ncols_out = ncols;
if (key_idx[layer] < 0)
ncols_out++;
col_info = G_malloc(ncols_out * sizeof(struct grass_col_info));
/* Collect column names and types */
i_out = 0;
col_info[i_out].idx = i_out;
col_info[i_out].name = key_column[layer];
col_info[i_out].type = "integer";
for (i = 0; i < ncols; i++) {
if (key_idx[layer] > -1 && key_idx[layer] == i)
continue; /* skip defined key (FID column) */
i_out++;
Ogr_field = OGR_FD_GetFieldDefn(Ogr_featuredefn, i);
Ogr_ftype = OGR_Fld_GetType(Ogr_field);
G_debug(3, "Ogr_ftype: %i", Ogr_ftype); /* look up below */
if (i < ncnames - 1) {
Ogr_fieldname = G_store(param.cnames->answers[i + 1]);
}
else {
/* Change column names to [A-Za-z][A-Za-z0-9_]* */
Ogr_fieldname = G_store(OGR_Fld_GetNameRef(Ogr_field));