From 117efb6fa497ce873c9e18368d2a9fc61eaa8ef8 Mon Sep 17 00:00:00 2001
From: Andrew Dolgov <noreply@fakecake.org>
Date: Mon, 19 Jan 2015 12:52:15 +0300
Subject: [PATCH] add trgm plugin for postgresql
---
plugins/af_psql_trgm/init.php | 202 ++++++++++++++++++++++++++++++++++
1 file changed, 202 insertions(+)
create mode 100644 plugins/af_psql_trgm/init.php
diff --git a/plugins/af_psql_trgm/init.php b/plugins/af_psql_trgm/init.php
new file mode 100644
index 000000000..a1ee040e8
--- /dev/null
+++ b/plugins/af_psql_trgm/init.php
@@ -0,0 +1,202 @@
+<?php
+class Af_Psql_Trgm extends Plugin {
+
+ private $host;
+ private $filters = array();
+
+ function about() {
+ return array(1.0,
+ "Marks similar articles as read (requires pg_trgm)",
+ "fox");
+ }
+
+ function save() {
+ $similarity = (float) db_escape_string($_POST["similarity"]);
+ $min_title_length = (int) db_escape_string($_POST["min_title_length"]);
+
+ if ($similarity < 0) $similarity = 0;
+ if ($similarity > 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 "<div dojoType=\"dijit.layout.AccordionPane\" title=\"".__('Mark similar articles as read')."\">";
+
+ 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) $min_title_length = '32';
+
+ print "<form dojoType=\"dijit.form.Form\">";
+
+ print "<script type=\"dojo/method\" event=\"onSubmit\" args=\"evt\">
+ evt.preventDefault();
+ if (this.validate()) {
+ console.log(dojo.objectToQuery(this.getValues()));
+ new Ajax.Request('backend.php', {
+ parameters: dojo.objectToQuery(this.getValues()),
+ onComplete: function(transport) {
+ notify_info(transport.responseText);
+ }
+ });
+ //this.reset();
+ }
+ </script>";
+
+ print "<input dojoType=\"dijit.form.TextBox\" style=\"display : none\" name=\"op\" value=\"pluginhandler\">";
+ print "<input dojoType=\"dijit.form.TextBox\" style=\"display : none\" name=\"method\" value=\"save\">";
+ print "<input dojoType=\"dijit.form.TextBox\" style=\"display : none\" name=\"plugin\" value=\"af_psql_trgm\">";
+
+ print_notice("PostgreSQL trigram extension returns string similarity as a floating point number (0-1). Setting it too low might produce false positives, zero disables checking.");
+
+ print "<br/>";
+ print_notice("Only data in other feeds is checked, i.e. sequential duplicate posts in one feed will not be detected by this plugin.");
+
+ print "<br/>";
+ print_notice("Enable the plugin for specific feeds in the feed editor.");
+
+ print "<h3>" . __("Global settings") . "</h3>";
+
+ print "<table>";
+
+ print "<tr><td width=\"40%\">".__("Minimum similarity:")."</td>";
+ print "<td>
+ <input dojoType=\"dijit.form.ValidationTextBox\"
+ placeholder=\"0.75\"
+ required=\"1\" name=\"similarity\" value=\"$similarity\"></td></tr>";
+ print "<tr><td width=\"40%\">".__("Minimum title length:")."</td>";
+ print "<td>
+ <input dojoType=\"dijit.form.ValidationTextBox\"
+ placeholder=\"32\"
+ required=\"1\" name=\"min_title_length\" value=\"$min_title_length\"></td></tr>";
+
+
+ print "</table>";
+
+ print "<p><button dojoType=\"dijit.form.Button\" type=\"submit\">".
+ __("Save")."</button>";
+
+ print "</form>";
+
+ print "</div>";
+ }
+
+ //PluginHost::getInstance()->run_hooks(PluginHost::HOOK_PREFS_EDIT_FEED,
+ // "hook_prefs_edit_feed", $feed_id);
+ // PluginHost::getInstance()->run_hooks(PluginHost::HOOK_PREFS_SAVE_FEED,
+ // "hook_prefs_save_feed", $feed_id);
+
+ function hook_prefs_edit_feed($feed_id) {
+ print "<div class=\"dlgSec\">".__("Similarity (pg_trgm)")."</div>";
+ print "<div class=\"dlgSecCont\">";
+
+ $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 "<hr/><input dojoType=\"dijit.form.CheckBox\" type=\"checkbox\" id=\"trgm_similarity_enabled\"
+ name=\"trgm_similarity_enabled\"
+ $checked> <label for=\"trgm_similarity_enabled\">".__('Mark similar articles as read')."</label>";
+
+ print "</div>";
+ }
+
+ function hook_prefs_save_feed($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;
+ }
+
+}
+?>
--
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