start work on support for technorati tags, schema uses cascade deletes for pgsql

backend.php

@@ -668,10 +668,7 @@
 				$ids = split(",", $_GET["ids"]);
 
 				foreach ($ids as $id) {
-					db_query($link, "BEGIN");
-					db_query($link, "DELETE FROM ttrss_entries WHERE feed_id = '$id'");
 					db_query($link, "DELETE FROM ttrss_feeds WHERE id = '$id'");
-					db_query($link, "COMMIT");
 					
 					if (file_exists(ICONS_DIR . "/$id.ico")) {
 						unlink(ICONS_DIR . "/$id.ico");

functions.php

@@ -269,12 +269,47 @@
 						$result = db_query($link, $query);
 					}
 				}
-			}
 
-			if ($result) {
+				/* taaaags */
-				$result = db_query($link, "UPDATE ttrss_feeds SET last_updated = NOW()");
+				// <a href="http://technorati.com/tag/Xorg" rel="tag">Xorg</a>, //
+
+				$entry_tags = null;
+
+				preg_match_all("/<a.*?rel=.tag.*?>([^>]+)<\/a>/i", $entry_content,
+					$entry_tags);
+
+				$entry_tags = $entry_tags[1];
+
+				if (count($entry_tags) > 0) {
+				
+					$result = db_query($link, "SELECT id FROM ttrss_entries 
+						WHERE guid = '$entry_guid'");
+
+					if (!$result || db_num_rows($result) != 1) {
+						return;
+					}
+
+					$entry_id = db_fetch_result($result, 0, "id");
+				
+					foreach ($entry_tags as $tag) {
+						$tag = db_escape_string(strtolower($tag));
+
+						$result = db_query($link, "SELECT id FROM ttrss_tags		
+							WHERE tag_name = '$tag' AND post_id = '$entry_id' LIMIT 1");
+
+						if ($result && db_num_rows($result) == 0) {
+							
+//							print "tagging $entry_id as $tag<br>";
+
+							db_query($link, "INSERT INTO ttrss_tags (tag_name,post_id)
+								VALUES ('$tag', '$entry_id')");
+						}							
+					}
+				}
 			}
 
+			db_query($link, "UPDATE ttrss_feeds SET last_updated = NOW()");
+
 		}
 
 		db_query($link, "COMMIT");

schema/ttrss_schema_mysql.sql

@@ -1,3 +1,4 @@
+drop table if exists ttrss_tags;
 drop table if exists ttrss_entries;
 drop table if exists ttrss_feeds;
 
@@ -69,3 +70,7 @@ create table ttrss_labels (id integer primary key auto_increment,
 insert into ttrss_labels (sql_exp,description) values ('unread = true', 
 	'Unread articles');
 
+create table ttrss_tags (id integer primary key auto_increment, 
+	tag_name varchar(250) not null,
+	post_id integer references ttrss_entries(id)) TYPE=InnoDB;
+

schema/ttrss_schema_pgsql.sql

@@ -1,3 +1,4 @@
+drop table ttrss_tags;
 drop table ttrss_entries;
 drop table ttrss_feeds;
 
@@ -28,7 +29,7 @@ insert into ttrss_feeds (title,feed_url) values ('Technocrat.net',
 	'http://syndication.technocrat.net/rss');
 
 create table ttrss_entries (id serial not null primary key, 
-	feed_id int references ttrss_feeds(id) not null, 
+	feed_id int references ttrss_feeds(id) ON DELETE CASCADE not null, 
 	updated timestamp not null, 
 	title varchar(250) not null, 
 	guid varchar(300) not null unique, 
@@ -68,3 +69,7 @@ create table ttrss_labels (id serial primary key,
 insert into ttrss_labels (sql_exp,description) values ('unread = true', 
 	'Unread articles');
 
+create table ttrss_tags (id serial primary key, 
+	tag_name varchar(250) not null,
+	post_id integer references ttrss_entries(id) ON DELETE CASCADE not null);
+