1) $similarity = 1;
if ($min_title_length < 0) $min_title_length = 0;
$similarity = sprintf("%.2f", $similarity);
$this->host->set($this, "similarity", $similarity);
$this->host->set($this, "min_title_length", $min_title_length);
echo T_sprintf("Data saved (%s)", $similarity);
}
function init($host) {
$this->host = $host;
$host->add_hook($host::HOOK_ARTICLE_FILTER, $this);
$host->add_hook($host::HOOK_PREFS_TAB, $this);
$host->add_hook($host::HOOK_PREFS_EDIT_FEED, $this);
$host->add_hook($host::HOOK_PREFS_SAVE_FEED, $this);
}
function hook_prefs_tab($args) {
if ($args != "prefFeeds") return;
print "";
if (DB_TYPE != "pgsql") {
print_error("Database type not supported.");
}
$result = db_query("select 'similarity'::regproc");
if (db_num_rows($result) == 0) {
print_error("pg_trgm extension not found.");
}
$similarity = $this->host->get($this, "similarity");
$min_title_length = $this->host->get($this, "min_title_length");
if (!$similarity) $similarity = '0.75';
if (!$min_title_length) $min_title_length = '32';
print "
";
print "
".__("Similarity (pg_trgm)")."
";
print "";
$enabled_feeds = $this->host->get($this, "enabled_feeds");
if (!array($enabled_feeds)) $enabled_feeds = array();
$key = array_search($feed_id, $enabled_feeds);
$checked = $key !== FALSE ? "checked" : "";
print "
";
print "";
}
function hook_prefs_save_feed($feed_id) {
$enabled_feeds = $this->host->get($this, "enabled_feeds");
if (!is_array($enabled_feeds)) $enabled_feeds = array();
$enable = checkbox_to_sql_bool($_POST["trgm_similarity_enabled"]) == 'true';
$key = array_search($feed_id, $enabled_feeds);
if ($enable) {
if ($key === FALSE) {
array_push($enabled_feeds, $feed_id);
}
} else {
if ($key !== FALSE) {
unset($enabled_feeds[$key]);
}
}
$this->host->set($this, "enabled_feeds", $enabled_feeds);
}
function hook_article_filter($article) {
if (DB_TYPE != "pgsql") return $article;
$result = db_query("select 'similarity'::regproc");
if (db_num_rows($result) == 0) return $article;
$enabled_feeds = $this->host->get($this, "enabled_feeds");
$key = array_search($article["feed"]["id"], $enabled_feeds);
if ($key === FALSE) return $article;
$similarity = (float) $this->host->get($this, "similarity");
if ($similarity < 0.01) return $article;
$min_title_length = (int) $this->host->get($this, "min_length");
if (mb_strlen($article["title"]) < $min_title_length) return $article;
$owner_uid = $article["owner_uid"];
$feed_id = $article["feed"]["id"];
$title_escaped = db_escape_string($article["title"]);
$result = db_query("SELECT MAX(SIMILARITY(title, '$title_escaped')) AS ms
FROM ttrss_entries, ttrss_user_entries WHERE ref_id = id AND
date_entered >= NOW() - interval '1 day' AND
feed_id != $feed_id AND
owner_uid = $owner_uid");
$similarity_result = db_fetch_result($result, 0, "ms");
//_debug("similarity result: $similarity_result");
if ($similarity_result >= $similarity) {
$article["force_catchup"] = true;
}
return $article;
}
function api_version() {
return 2;
}
}
?>