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spatialite_osm_filter.c
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spatialite_osm_filter.c
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/*
/ spatialite_osm_filter
/
/ a tool loading OSM-XML maps into a SpatiaLite DB
/
/ version 1.0, 2011 October 31
/
/ Author: Sandro Furieri [email protected]
/
/ Copyright (C) 2011 Alessandro Furieri
/
/ This program 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 3 of the License, or
/ (at your option) any later version.
/
/ This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
/
*/
#if defined(_WIN32) && !defined(__MINGW32__)
/* MSVC strictly requires this include [off_t] */
#include <sys/types.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#if defined(_WIN32) && !defined(__MINGW32__)
#include "config-msvc.h"
#else
#include "config.h"
#endif
#ifdef SPATIALITE_AMALGAMATION
#include <spatialite/sqlite3.h>
#else
#include <sqlite3.h>
#endif
#include <spatialite/gaiageo.h>
#include <spatialite.h>
#define ARG_NONE 0
#define ARG_OSM_PATH 1
#define ARG_DB_PATH 2
#define ARG_CACHE_SIZE 3
#define ARG_MASK_PATH 4
#if defined(_WIN32) && !defined(__MINGW32__)
#define strcasecmp _stricmp
#endif /* not WIN32 */
static char *
clean_xml (const char *in)
{
/* well formatting XML text strings */
int len = 0;
char *buf;
char *p_o;
const char *p_i = in;
while (*p_i != '\0')
{
/* calculating the output len */
if (*p_i == '"')
{
len += 6;
p_i++;
continue;
}
if (*p_i == '\'')
{
len += 6;
p_i++;
continue;
}
if (*p_i == '&')
{
len += 5;
p_i++;
continue;
}
if (*p_i == '<')
{
len += 4;
p_i++;
continue;
}
if (*p_i == '>')
{
len += 4;
p_i++;
continue;
}
len++;
p_i++;
}
buf = malloc (len + 1);
p_o = buf;
p_i = in;
while (*p_i != '\0')
{
if (*p_i == '"')
{
*p_o++ = '&';
*p_o++ = 'q';
*p_o++ = 'u';
*p_o++ = 'o';
*p_o++ = 't';
*p_o++ = ';';
p_i++;
continue;
}
if (*p_i == '\'')
{
*p_o++ = '&';
*p_o++ = 'a';
*p_o++ = 'p';
*p_o++ = 'o';
*p_o++ = 's';
*p_o++ = ';';
p_i++;
continue;
}
if (*p_i == '&')
{
*p_o++ = '&';
*p_o++ = 'a';
*p_o++ = 'm';
*p_o++ = 'p';
*p_o++ = ';';
p_i++;
continue;
}
if (*p_i == '<')
{
*p_o++ = '&';
*p_o++ = 'l';
*p_o++ = 't';
*p_o++ = ';';
p_i++;
continue;
}
if (*p_i == '>')
{
*p_o++ = '&';
*p_o++ = 'g';
*p_o++ = 't';
*p_o++ = ';';
p_i++;
continue;
}
*p_o++ = *p_i++;
}
*p_o = '\0';
return buf;
}
static int
do_output_nodes (FILE * out, sqlite3 * handle)
{
/* exporting any OSM node */
char sql[1024];
int ret;
int first;
int close_node;
sqlite3_stmt *node_query = NULL;
sqlite3_stmt *query = NULL;
/* preparing the QUERY filtered-NODES statement */
strcpy (sql, "SELECT node_id FROM osm_nodes WHERE filtered = 1");
ret = sqlite3_prepare_v2 (handle, sql, strlen (sql), &node_query, NULL);
if (ret != SQLITE_OK)
{
fprintf (stderr, "SQL error: %s\n%s\n", sql, sqlite3_errmsg (handle));
return 0;
}
/* preparing the QUERY NODES statement */
strcpy (sql, "SELECT n.node_id, n.version, n.timestamp, ");
strcat (sql, "n.uid, n.user, n.changeset, ST_X(n.Geometry), ");
strcat (sql, "ST_Y(n.Geometry), t.k, t.v ");
strcat (sql, "FROM osm_nodes AS n ");
strcat (sql, "LEFT JOIN osm_node_tags AS t ON (t.node_id = n.node_id) ");
strcat (sql, "WHERE n.node_id = ? ");
strcat (sql, "ORDER BY n.node_id, t.sub");
ret = sqlite3_prepare_v2 (handle, sql, strlen (sql), &query, NULL);
if (ret != SQLITE_OK)
{
fprintf (stderr, "SQL error: %s\n%s\n", sql, sqlite3_errmsg (handle));
goto stop;
}
while (1)
{
/* scrolling the result set */
ret = sqlite3_step (node_query);
if (ret == SQLITE_DONE)
{
/* there are no more rows to fetch - we can stop looping */
break;
}
if (ret == SQLITE_ROW)
{
/* ok, we've just fetched a valid row */
sqlite3_int64 id = sqlite3_column_int64 (node_query, 0);
sqlite3_reset (query);
sqlite3_clear_bindings (query);
sqlite3_bind_int64 (query, 1, id);
first = 1;
close_node = 0;
while (1)
{
/* scrolling the result set */
ret = sqlite3_step (query);
if (ret == SQLITE_DONE)
{
/* there are no more rows to fetch - we can stop looping */
break;
}
if (ret == SQLITE_ROW)
{
/* ok, we've just fetched a valid row */
sqlite3_int64 id = sqlite3_column_int64 (query, 0);
int version = sqlite3_column_int (query, 1);
const char *p_timestamp =
(const char *) sqlite3_column_text (query, 2);
int uid = sqlite3_column_int (query, 3);
const char *p_user =
(const char *) sqlite3_column_text (query, 4);
const char *p_changeset =
(const char *) sqlite3_column_text (query, 5);
double x = sqlite3_column_double (query, 6);
double y = sqlite3_column_double (query, 7);
char *k = NULL;
char *v = NULL;
if (sqlite3_column_type (query, 8) != SQLITE_NULL)
k = clean_xml ((const char *)
sqlite3_column_text (query, 8));
if (sqlite3_column_type (query, 9) != SQLITE_NULL)
v = clean_xml ((const char *)
sqlite3_column_text (query, 9));
if (first)
{
/* first NODE row */
char *timestamp =
p_timestamp ? clean_xml (p_timestamp) :
NULL;
char *changeset =
p_changeset ? clean_xml (p_changeset) :
NULL;
char *user =
p_user ? clean_xml (p_user) : NULL;
first = 0;
#if defined(_WIN32) || defined(__MINGW32__)
/* CAVEAT - M$ runtime doesn't supports %lld for 64 bits */
fprintf (out, "\t<node id=\"%I64d\"", id);
#else
fprintf (out, "\t<node id=\"%lld\"", id);
#endif
if (user)
{
fprintf (out, " user=\"%s\"", user);
free (user);
}
if (changeset)
{
fprintf (out, " changeset=\"%s\"",
changeset);
free (changeset);
}
if (timestamp)
{
fprintf (out, " timestamp=\"%s\"",
timestamp);
free (timestamp);
}
if (!version)
version = 1;
fprintf (out, " version=\"%d\"", version);
fprintf (out,
" lat=\"%1.7f\" lon=\"%1.7f\" uid=\"%d\" ",
y, x, uid);
if (k == NULL && v == NULL)
fprintf (out, "/>\n");
else
fprintf (out, ">\n");
}
if (k != NULL && v != NULL)
{
/* NODE tag */
fprintf (out,
"\t\t<tag k=\"%s\" v=\"%s\"/>\n", k,
v);
close_node = 1;
}
if (k)
free (k);
if (v)
free (v);
}
else
{
/* some unexpected error occurred */
fprintf (stderr, "sqlite3_step() error: %s\n",
sqlite3_errmsg (handle));
goto stop;
}
}
if (close_node)
fprintf (out, "\t</node>\n");
}
else
{
/* some unexpected error occurred */
fprintf (stderr, "sqlite3_step() error: %s\n",
sqlite3_errmsg (handle));
goto stop;
}
}
sqlite3_finalize (node_query);
sqlite3_finalize (query);
return 1;
stop:
sqlite3_finalize (node_query);
if (query)
sqlite3_finalize (query);
return 0;
}
static int
do_output_ways (FILE * out, sqlite3 * handle)
{
/* exporting any OSM way */
char sql[1024];
int ret;
int first;
sqlite3_stmt *way_query = NULL;
sqlite3_stmt *query = NULL;
sqlite3_stmt *query_tag = NULL;
/* preparing the QUERY filtered-WAYS statement */
strcpy (sql, "SELECT way_id FROM osm_ways WHERE filtered = 1");
ret = sqlite3_prepare_v2 (handle, sql, strlen (sql), &way_query, NULL);
if (ret != SQLITE_OK)
{
fprintf (stderr, "SQL error: %s\n%s\n", sql, sqlite3_errmsg (handle));
return 0;
}
/* preparing the QUERY WAY/NODES statement */
strcpy (sql, "SELECT w.way_id, w.version, w.timestamp, w.uid, ");
strcat (sql, "w.user, w.changeset, n.node_id ");
strcat (sql, "FROM osm_ways AS w ");
strcat (sql, "JOIN osm_way_refs AS n ON (n.way_id = w.way_id) ");
strcat (sql, "WHERE w.way_id = ? ");
strcat (sql, "ORDER BY w.way_id, n.sub");
ret = sqlite3_prepare_v2 (handle, sql, strlen (sql), &query, NULL);
if (ret != SQLITE_OK)
{
fprintf (stderr, "SQL error: %s\n%s\n", sql, sqlite3_errmsg (handle));
goto stop;
}
/* preparing the QUERY WAY/TAGS statement */
strcpy (sql, "SELECT t.k, t.v ");
strcat (sql, "FROM osm_ways AS w ");
strcat (sql, "JOIN osm_way_tags AS t ON (t.way_id = w.way_id) ");
strcat (sql, "WHERE w.way_id = ? ");
strcat (sql, "ORDER BY w.way_id, t.sub");
ret = sqlite3_prepare_v2 (handle, sql, strlen (sql), &query_tag, NULL);
if (ret != SQLITE_OK)
{
fprintf (stderr, "SQL error: %s\n%s\n", sql, sqlite3_errmsg (handle));
goto stop;
}
while (1)
{
/* scrolling the result set */
ret = sqlite3_step (way_query);
if (ret == SQLITE_DONE)
{
/* there are no more rows to fetch - we can stop looping */
break;
}
if (ret == SQLITE_ROW)
{
/* ok, we've just fetched a valid row */
sqlite3_int64 id = sqlite3_column_int64 (way_query, 0);
sqlite3_reset (query);
sqlite3_clear_bindings (query);
sqlite3_bind_int64 (query, 1, id);
first = 1;
while (1)
{
/* scrolling the result set */
ret = sqlite3_step (query);
if (ret == SQLITE_DONE)
{
/* there are no more rows to fetch - we can stop looping */
break;
}
if (ret == SQLITE_ROW)
{
/* ok, we've just fetched a valid row */
sqlite3_int64 id = sqlite3_column_int64 (query, 0);
int version = sqlite3_column_int (query, 1);
const char *p_timestamp =
(const char *) sqlite3_column_text (query, 2);
int uid = sqlite3_column_int (query, 3);
const char *p_user =
(const char *) sqlite3_column_text (query, 4);
const char *p_changeset =
(const char *) sqlite3_column_text (query, 5);
sqlite3_int64 node_id =
sqlite3_column_int64 (query, 6);
if (first)
{
/* first WAY row */
char *timestamp =
p_timestamp ? clean_xml (p_timestamp) :
NULL;
char *changeset =
p_changeset ? clean_xml (p_changeset) :
NULL;
char *user = NULL;
if (p_user)
user = clean_xml (p_user);
first = 0;
#if defined(_WIN32) || defined(__MINGW32__)
/* CAVEAT - M$ runtime doesn't supports %lld for 64 bits */
fprintf (out, "\t<way id=\"%I64d\"", id);
#else
fprintf (out, "\t<way id=\"%lld\"", id);
#endif
if (user)
{
fprintf (out, " user=\"%s\"", user);
free (user);
}
if (changeset)
{
fprintf (out, " changeset=\"%s\"",
changeset);
free (changeset);
}
if (timestamp)
{
fprintf (out, " timestamp=\"%s\"",
timestamp);
free (timestamp);
}
if (!version)
version = 1;
fprintf (out, " version=\"%d\"", version);
fprintf (out, " uid=\"%d\" >\n", uid);
}
/* NODE REF tag */
#if defined(_WIN32) || defined(__MINGW32__)
/* CAVEAT - M$ runtime doesn't supports %lld for 64 bits */
fprintf (out, "\t\t<nd ref=\"%I64d\"/>\n", node_id);
#else
fprintf (out, "\t\t<nd ref=\"%lld\"/>\n", node_id);
#endif
}
else
{
/* some unexpected error occurred */
fprintf (stderr, "sqlite3_step() error: %s\n",
sqlite3_errmsg (handle));
goto stop;
}
}
if (!first)
{
/* exporting WAY tags */
sqlite3_reset (query_tag);
sqlite3_clear_bindings (query_tag);
sqlite3_bind_int64 (query_tag, 1, id);
while (1)
{
/* scrolling the result set */
ret = sqlite3_step (query_tag);
if (ret == SQLITE_DONE)
{
/* there are no more rows to fetch - we can stop looping */
break;
}
if (ret == SQLITE_ROW)
{
/* ok, we've just fetched a valid row */
char *k =
clean_xml ((const char *)
sqlite3_column_text (query_tag,
0));
char *v =
clean_xml ((const char *)
sqlite3_column_text (query_tag,
1));
fprintf (out,
"\t\t<tag k=\"%s\" v=\"%s\"/>\n", k,
v);
free (k);
free (v);
}
else
{
/* some unexpected error occurred */
fprintf (stderr, "sqlite3_step() error: %s\n",
sqlite3_errmsg (handle));
goto stop;
}
}
}
fprintf (out, "\t</way>\n");
}
else
{
/* some unexpected error occurred */
fprintf (stderr, "sqlite3_step() error: %s\n",
sqlite3_errmsg (handle));
goto stop;
}
}
sqlite3_finalize (way_query);
sqlite3_finalize (query);
sqlite3_finalize (query_tag);
return 1;
stop:
sqlite3_finalize (way_query);
if (query)
sqlite3_finalize (query);
if (query_tag)
sqlite3_finalize (query_tag);
return 0;
}
static int
do_output_relations (FILE * out, sqlite3 * handle)
{
/* exporting any OSM relation */
char sql[1024];
int ret;
int first;
sqlite3_stmt *rel_query = NULL;
sqlite3_stmt *query_nd = NULL;
sqlite3_stmt *query_way = NULL;
sqlite3_stmt *query_rel = NULL;
sqlite3_stmt *query_tag = NULL;
/* preparing the QUERY filtered-RELATIONS statement */
strcpy (sql, "SELECT rel_id FROM osm_relations WHERE filtered = 1");
ret = sqlite3_prepare_v2 (handle, sql, strlen (sql), &rel_query, NULL);
if (ret != SQLITE_OK)
{
fprintf (stderr, "SQL error: %s\n%s\n", sql, sqlite3_errmsg (handle));
return 0;
}
/* preparing the QUERY RELATION/NODES statement */
strcpy (sql, "SELECT r.rel_id, r.version, r.timestamp, r.uid, ");
strcat (sql, "r.user, r.changeset, n.role, n.ref ");
strcat (sql, "FROM osm_relations AS r ");
strcat (sql,
"JOIN osm_relation_refs AS n ON (n.type = 'N' AND n.rel_id = r.rel_id) ");
strcat (sql, "WHERE r.rel_id = ? ");
strcat (sql, "ORDER BY r.rel_id, n.sub");
ret = sqlite3_prepare_v2 (handle, sql, strlen (sql), &query_nd, NULL);
if (ret != SQLITE_OK)
{
fprintf (stderr, "SQL error: %s\n%s\n", sql, sqlite3_errmsg (handle));
goto stop;
}
/* preparing the QUERY RELATION/WAYS statement */
strcpy (sql, "SELECT r.rel_id, r.version, r.timestamp, r.uid, ");
strcat (sql, "r.user, r.changeset, w.role, w.ref ");
strcat (sql, "FROM osm_relations AS r ");
strcat (sql,
"JOIN osm_relation_refs AS w ON (w.type = 'W' AND w.rel_id = r.rel_id) ");
strcat (sql, "WHERE r.rel_id = ? ");
strcat (sql, "ORDER BY r.rel_id, w.sub");
ret = sqlite3_prepare_v2 (handle, sql, strlen (sql), &query_way, NULL);
if (ret != SQLITE_OK)
{
fprintf (stderr, "SQL error: %s\n%s\n", sql, sqlite3_errmsg (handle));
goto stop;
}
/* preparing the QUERY RELATION/RELATIONS statement */
strcpy (sql, "SELECT r.rel_id, r.version, r.timestamp, r.uid, ");
strcat (sql, "r.user, r.changeset, x.role, x.ref ");
strcat (sql, "FROM osm_relations AS r ");
strcat (sql,
"JOIN osm_relation_refs AS x ON (x.type = 'R' AND x.rel_id = r.rel_id) ");
strcat (sql, "WHERE r.rel_id = ? ");
strcat (sql, "ORDER BY r.rel_id, x.sub");
ret = sqlite3_prepare_v2 (handle, sql, strlen (sql), &query_rel, NULL);
if (ret != SQLITE_OK)
{
fprintf (stderr, "SQL error: %s\n%s\n", sql, sqlite3_errmsg (handle));
goto stop;
}
/* preparing the QUERY RELATION/TAGS statement */
strcpy (sql, "SELECT t.k, t.v ");
strcat (sql, "FROM osm_relations AS r ");
strcat (sql, "JOIN osm_relation_tags AS t ON (t.rel_id = r.rel_id) ");
strcat (sql, "WHERE r.rel_id = ? ");
strcat (sql, "ORDER BY r.rel_id, t.sub");
ret = sqlite3_prepare_v2 (handle, sql, strlen (sql), &query_tag, NULL);
if (ret != SQLITE_OK)
{
fprintf (stderr, "SQL error: %s\n%s\n", sql, sqlite3_errmsg (handle));
goto stop;
}
while (1)
{
/* scrolling the result set */
ret = sqlite3_step (rel_query);
if (ret == SQLITE_DONE)
{
/* there are no more rows to fetch - we can stop looping */
break;
}
if (ret == SQLITE_ROW)
{
/* ok, we've just fetched a valid row */
sqlite3_int64 id = sqlite3_column_int64 (rel_query, 0);
sqlite3_reset (query_way);
sqlite3_clear_bindings (query_way);
sqlite3_bind_int64 (query_way, 1, id);
first = 1;
while (1)
{
/* scrolling the result set */
ret = sqlite3_step (query_way);
if (ret == SQLITE_DONE)
{
/* there are no more rows to fetch - we can stop looping */
break;
}
if (ret == SQLITE_ROW)
{
/* ok, we've just fetched a valid row */
sqlite3_int64 id =
sqlite3_column_int64 (query_way, 0);
int version = sqlite3_column_int (query_way, 1);
const char *p_timestamp =
(const char *) sqlite3_column_text (query_way,
2);
int uid = sqlite3_column_int (query_way, 3);
const char *p_user =
(const char *) sqlite3_column_text (query_way,
4);
const char *p_changeset =
(const char *) sqlite3_column_text (query_way,
5);
char *role =
clean_xml ((const char *)
sqlite3_column_text (query_way, 6));
sqlite3_int64 way_id =
sqlite3_column_int64 (query_way, 7);
if (first)
{
/* first RELATION row */
char *timestamp =
p_timestamp ? clean_xml (p_timestamp) :
NULL;
char *changeset =
p_changeset ? clean_xml (p_changeset) :
NULL;
char *user = NULL;
if (p_user)
user = clean_xml (p_user);
first = 0;
#if defined(_WIN32) || defined(__MINGW32__)
/* CAVEAT - M$ runtime doesn't supports %lld for 64 bits */
fprintf (out, "\t<relation id=\"%I64d\"", id);
#else
fprintf (out, "\t<relation id=\"%lld\"", id);
#endif
if (user)
{
fprintf (out, " user=\"%s\"", user);
free (user);
}
if (changeset)
{
fprintf (out, " changeset=\"%s\"",
changeset);
free (changeset);
}
if (timestamp)
{
fprintf (out, " timestamp=\"%s\"",
timestamp);
free (timestamp);
}
if (!version)
version = 1;
fprintf (out, " version=\"%d\"", version);
fprintf (out, " uid=\"%d\" >\n", uid);
}
/* NODE REF tag */
#if defined(_WIN32) || defined(__MINGW32__)
/* CAVEAT - M$ runtime doesn't supports %lld for 64 bits */
fprintf (out,
"\t\t<member type=\"way\" ref=\"%I64d\" role=\"%s\"/>\n",
way_id, role);
#else
fprintf (out,
"\t\t<member type = \"way\" ref=\"%lld\" role=\"%s\"/>\n",
way_id, role);
#endif
free (role);
}
else
{
/* some unexpected error occurred */
fprintf (stderr, "sqlite3_step() error: %s\n",
sqlite3_errmsg (handle));
goto stop;
}
}
if (!first)
{
/* exporting WAY tags */
sqlite3_reset (query_tag);
sqlite3_clear_bindings (query_tag);
sqlite3_bind_int64 (query_tag, 1, id);
while (1)
{
/* scrolling the result set */
ret = sqlite3_step (query_tag);
if (ret == SQLITE_DONE)
{
/* there are no more rows to fetch - we can stop looping */
break;
}
if (ret == SQLITE_ROW)
{
/* ok, we've just fetched a valid row */
char *k =
clean_xml ((const char *)
sqlite3_column_text (query_tag,
0));
char *v =
clean_xml ((const char *)
sqlite3_column_text (query_tag,
1));
fprintf (out,
"\t\t<tag k=\"%s\" v=\"%s\"/>\n", k,
v);
free (k);
free (v);
}
else
{
/* some unexpected error occurred */
fprintf (stderr, "sqlite3_step() error: %s\n",
sqlite3_errmsg (handle));
goto stop;
}
}
}
fprintf (out, "\t</relation>\n");
}
else
{
/* some unexpected error occurred */
fprintf (stderr, "sqlite3_step() error: %s\n",
sqlite3_errmsg (handle));
goto stop;
}
}
sqlite3_finalize (rel_query);
sqlite3_finalize (query_nd);
sqlite3_finalize (query_way);
sqlite3_finalize (query_rel);
sqlite3_finalize (query_tag);
return 1;
stop:
sqlite3_finalize (rel_query);
if (query_nd)
sqlite3_finalize (query_nd);
if (query_way)
sqlite3_finalize (query_way);
if (query_rel)
sqlite3_finalize (query_rel);
if (query_tag)
sqlite3_finalize (query_tag);
return 0;
}
static int
reset_filtered (sqlite3 * handle)
{
/* resetting NODES, WAYS and RELATIONS */
char sql[1024];
int ret;
char *sql_err = NULL;
/* disabling transactions */
strcpy (sql, "PRAGMA journal_mode=OFF");
ret = sqlite3_exec (handle, sql, NULL, NULL, &sql_err);
if (ret != SQLITE_OK)
{
fprintf (stderr, "PRAGMA journal_mode=OFF: %s\n", sql_err);
sqlite3_free (sql_err);
return 0;
}
/* resetting NODES */
strcpy (sql, "UPDATE osm_nodes SET filtered = 0");
ret = sqlite3_exec (handle, sql, NULL, NULL, &sql_err);
if (ret != SQLITE_OK)
{
fprintf (stderr, "RESET osm_nodes error: %s\n", sql_err);
sqlite3_free (sql_err);
return 0;
}
/* resetting WAYS */
strcpy (sql, "UPDATE osm_ways SET filtered = 0");
ret = sqlite3_exec (handle, sql, NULL, NULL, &sql_err);
if (ret != SQLITE_OK)
{
fprintf (stderr, "RESET osm_ways error: %s\n", sql_err);
sqlite3_free (sql_err);
return 0;
}
/* resetting RELATIONS */
strcpy (sql, "UPDATE osm_relations SET filtered = 0");
ret = sqlite3_exec (handle, sql, NULL, NULL, &sql_err);
if (ret != SQLITE_OK)
{
fprintf (stderr, "RESET osm_relations error: %s\n", sql_err);
sqlite3_free (sql_err);
return 0;
}
/* enabling again transactions */
strcpy (sql, "PRAGMA journal_mode=DELETE");
ret = sqlite3_exec (handle, sql, NULL, NULL, &sql_err);
if (ret != SQLITE_OK)
{
fprintf (stderr, "PRAGMA journal_mode=DELETE: %s\n", sql_err);
sqlite3_free (sql_err);
return 0;
}
return 1;
}
static int
filter_rel_relations (sqlite3 * handle)
{
/* selecting any RELATION required by other selected RELATIONS */
char sql[1024];
int ret;
char *sql_err = NULL;
strcpy (sql, "UPDATE osm_relations SET filtered = 1 ");
strcat (sql, "WHERE rel_id IN (");
strcat (sql, "SELECT x.ref ");
strcat (sql, "FROM osm_relations AS r ");
strcat (sql,
"JOIN osm_relation_refs AS x ON (x.type = 'R' AND r.rel_id = x.rel_id) ");
strcat (sql, "WHERE r.filtered = 1)");
ret = sqlite3_exec (handle, sql, NULL, NULL, &sql_err);
if (ret != SQLITE_OK)
{
fprintf (stderr, "UPDATE osm_relations error: %s\n", sql_err);
sqlite3_free (sql_err);
return 0;
}
return 1;
}
static int
filter_way_relations (sqlite3 * handle)
{
/* selecting any WAY required by selected RELATIONS */
char sql[1024];
int ret;
char *sql_err = NULL;
strcpy (sql, "UPDATE osm_ways SET filtered = 1 ");
strcat (sql, "WHERE way_id IN ( ");
strcat (sql, "SELECT w.ref ");
strcat (sql, "FROM osm_relations AS r ");
strcat (sql,
"JOIN osm_relation_refs AS w ON (w.type = 'W' AND r.rel_id = w.rel_id) ");
strcat (sql, "WHERE r.filtered = 1)");
ret = sqlite3_exec (handle, sql, NULL, NULL, &sql_err);
if (ret != SQLITE_OK)
{
fprintf (stderr, "UPDATE osm_ways error: %s\n", sql_err);
sqlite3_free (sql_err);
return 0;
}
return 1;
}
static int
filter_node_relations (sqlite3 * handle)
{
/* selecting any NODE required by selected RELATIONS */
char sql[1024];
int ret;
char *sql_err = NULL;
strcpy (sql, "UPDATE osm_nodes SET filtered = 1 ");
strcat (sql, "WHERE node_id IN ( ");
strcat (sql, "SELECT n.ref ");
strcat (sql, "FROM osm_relations AS r ");
strcat (sql,
"JOIN osm_relation_refs AS n ON (n.type = 'N' AND r.rel_id = n.rel_id) ");
strcat (sql, "WHERE r.filtered = 1)");
ret = sqlite3_exec (handle, sql, NULL, NULL, &sql_err);
if (ret != SQLITE_OK)
{
fprintf (stderr, "UPDATE osm_nodes error: %s\n", sql_err);
sqlite3_free (sql_err);
return 0;
}
return 1;
}
static int
filter_node_ways (sqlite3 * handle)
{
/* selecting any NODE required by selected WAYS */
char sql[1024];
int ret;
char *sql_err = NULL;
strcpy (sql, "UPDATE osm_nodes SET filtered = 1 ");
strcat (sql, "WHERE node_id IN ( SELECT n.node_id ");
strcat (sql, "FROM osm_ways AS w ");
strcat (sql, "JOIN osm_way_refs AS n ON (w.way_id = n.way_id) ");
strcat (sql, "WHERE w.filtered = 1)");
ret = sqlite3_exec (handle, sql, NULL, NULL, &sql_err);
if (ret != SQLITE_OK)
{
fprintf (stderr, "UPDATE osm_nodes error: %s\n", sql_err);
sqlite3_free (sql_err);
return 0;
}
return 1;
}
static int
filter_nodes (sqlite3 * handle, void *mask, int mask_len)
{
/* filtering any NODE to be exported */
char sql[1024];
int ret;
sqlite3_stmt *query = NULL;
sqlite3_stmt *stmt_nodes = NULL;
sqlite3_stmt *stmt_ways = NULL;
sqlite3_stmt *stmt_rels = NULL;
char *sql_err = NULL;
/* the complete INSERT operation is handled as an unique SQL Transaction */
ret = sqlite3_exec (handle, "BEGIN", NULL, NULL, &sql_err);
if (ret != SQLITE_OK)
{
fprintf (stderr, "BEGIN TRANSACTION error: %s\n", sql_err);
sqlite3_free (sql_err);
return 0;
}
/* preparing the UPDATE NODES statement */
strcpy (sql, "UPDATE osm_nodes SET filtered = 1 WHERE node_id = ?");