From e2a9b703ea6fbfbc33ca79ec39cb7c19f0283662 Mon Sep 17 00:00:00 2001
From: Kaj-Michael Lang <milang@angel.tal.org>
Date: Fri, 27 Jul 2007 15:27:35 +0300
Subject: [PATCH] Move clearing of old data to their own functions.

---
 src/osm.c | 28 +++++++++++++++++++++++-----
 1 file changed, 23 insertions(+), 5 deletions(-)

diff --git a/src/osm.c b/src/osm.c
index ce5b1bb..9340c0d 100644
--- a/src/osm.c
+++ b/src/osm.c
@@ -29,6 +29,7 @@ static gint dbnode_cnt=0;
 static gint dbnoded_cnt=0;
 static gint dbway_cnt=0;
 
+static gboolean is_update=FALSE;
 static XML_Parser xp;
 
 typedef struct _node_data node_data;
@@ -877,13 +878,19 @@ g_slist_free(osm_poi);
 
 /*********************************************************************/
 
+void
+osm_planet_clear_nodes(void)
+{
+g_print("Clearing old nodes\n");
+sqlite3_step(sql.delete_nodes);
+}
+
 void
 osm_planet_save_nodes(void)
 {
 g_print("Storing nodes...\n");
 
 sqlite3_exec(db, "begin;", NULL, NULL, NULL);
-sqlite3_step(sql.delete_nodes);
 g_hash_table_foreach(osm_nodes, osm_node_save_node, NULL);
 sqlite3_exec(db, "commit;", NULL, NULL, NULL);
 }
@@ -902,16 +909,18 @@ if (dbway_cnt % 8192==0) {
 }
 
 void
-osm_planet_save_ways(void)
+osm_planet_clear_ways(void)
 {
-g_print("Storing ways...\n");
-
 g_print("Clearing old data:\n");
 sqlite3_step(sql.delete_way);
 sqlite3_step(sql.delete_way_seg);
 sqlite3_step(sql.delete_way_name);
 sqlite3_step(sql.delete_way_ref);
+}
 
+void
+osm_planet_save_ways(void)
+{
 g_print("Inserting new ways:\n");
 sqlite3_exec(db, "begin;", NULL, NULL, NULL);
 g_slist_foreach(osm_ways, osm_node_save_way, NULL);
@@ -924,10 +933,18 @@ void
 osm_planet_save_to_db(void)
 {
 g_printf("Saving planet to database:\n");
+
 osm_planet_poi_clear_nodes();
 osm_planet_poi_save_nodes();
+
+if (!is_update) {
+	osm_planet_clear_nodes();
+	osm_planet_clear_ways();
+}
+
 osm_planet_save_nodes();
 osm_planet_save_ways();
+
 g_printf("Data saved.\n");
 }
 
@@ -1172,7 +1189,7 @@ switch (t) {
 
 /************************************************************************/
 
-gboolean
+void
 osm_planet_parse_init(void)
 {
 xp=XML_ParserCreate(NULL);
@@ -1322,4 +1339,5 @@ storage_free();
 
 sqlite3_close(db);
 sync();
+return 0;
 }
-- 
2.39.5