From 172504813ff6d4b478d8fc42631d0535ed33f485 Mon Sep 17 00:00:00 2001
From: Peter Molnar <hello@petermolnar.eu>
Date: Tue, 1 Mar 2016 21:24:17 +0000
Subject: [PATCH] 0.2.1, see readme.txt

---
 readme.txt          |  7 +++++-
 wp-url2snapshot.php | 55 ++++++++++++++++++++++++++++++++++++---------
 2 files changed, 50 insertions(+), 12 deletions(-)

diff --git a/readme.txt b/readme.txt
index 796ab47..6c388da 100644
--- a/readme.txt
+++ b/readme.txt
@@ -4,7 +4,7 @@ Donate link: https://paypal.me/petermolnar/3
 Tags: linkrot, archive, hyperlink, url
 Requires at least: 3.0
 Tested up to: 4.4.1
-Stable tag: 0.2
+Stable tag: 0.2.1
 License: GPLv3
 License URI: http://www.gnu.org/licenses/gpl-3.0.html
 Required minimum PHP version: 5.3
@@ -36,6 +36,11 @@ Version numbering logic:
 * every .B version indicates new features.
 * every ..C indicates bugfixes for A.B version.
 
+= 0.2.1 =
+* 2016-03-01*
+
+* better logging, added filter for urls
+
 = 0.2 =
 *2016-01-07*
 
diff --git a/wp-url2snapshot.php b/wp-url2snapshot.php
index 7757043..1e51f74 100644
--- a/wp-url2snapshot.php
+++ b/wp-url2snapshot.php
@@ -3,7 +3,7 @@
 Plugin Name: wp-url2snapshot
 Plugin URI: https://github.com/petermolnar/wp-url2snapshot
 Description: reversible automatic short slug based on post pubdate epoch for WordPress
-Version: 0.2
+Version: 0.2.1
 Author: Peter Molnar <hello@petermolnar.eu>
 Author URI: http://petermolnar.eu/
 License: GPLv3
@@ -119,6 +119,8 @@ class WP_URL2SNAPSHOT {
 		static::debug(" processing post #{$post->ID}");
 		$content = static::get_the_content($post);
 		$urls = static::extract_urls($content);
+		$urls = apply_filters ( 'wp_url2snapshot_urls', $urls, $post );
+		$urls = array_unique ( $urls );
 		foreach ($urls as $url) {
 			$url = esc_url_raw($url);
 
@@ -427,23 +429,54 @@ class WP_URL2SNAPSHOT {
 	 *
 	 * @param string $message
 	 * @param int $level
+	 *
+	 * @output log to syslog | wp_die on high level
+	 * @return false on not taking action, true on log sent
 	 */
 	public static function debug( $message, $level = LOG_NOTICE ) {
+		if ( empty( $message ) )
+			return false;
+
 		if ( @is_array( $message ) || @is_object ( $message ) )
 			$message = json_encode($message);
 
+		$levels = array (
+			LOG_EMERG => 0, // system is unusable
+			LOG_ALERT => 1, // Alert 	action must be taken immediately
+			LOG_CRIT => 2, // Critical 	critical conditions
+			LOG_ERR => 3, // Error 	error conditions
+			LOG_WARNING => 4, // Warning 	warning conditions
+			LOG_NOTICE => 5, // Notice 	normal but significant condition
+			LOG_INFO => 6, // Informational 	informational messages
+			LOG_DEBUG => 7, // Debug 	debug-level messages
+		);
 
-		switch ( $level ) {
-			case LOG_ERR :
-				wp_die( '<h1>Error:</h1>' . '<p>' . $message . '</p>' );
-				exit;
-			default:
-				if ( !defined( 'WP_DEBUG' ) || WP_DEBUG != true )
-					return;
-				break;
+		// number for number based comparison
+		// should work with the defines only, this is just a make-it-sure step
+		$level_ = $levels [ $level ];
+
+		// in case WordPress debug log has a minimum level
+		if ( defined ( 'WP_DEBUG_LEVEL' ) ) {
+			$wp_level = $levels [ WP_DEBUG_LEVEL ];
+			if ( $level_ < $wp_level ) {
+				return false;
+			}
 		}
 
-		error_log(  __CLASS__ . ": " . $message );
+		// ERR, CRIT, ALERT and EMERG
+		if ( 3 >= $level_ ) {
+			wp_die( '<h1>Error:</h1>' . '<p>' . $message . '</p>' );
+			exit;
+		}
+
+		$trace = debug_backtrace();
+		$caller = $trace[1];
+		$parent = $caller['function'];
+
+		if (isset($caller['class']))
+			$parent = $caller['class'] . '::' . $parent;
+
+		return error_log( "{$parent}: {$message}" );
 	}
 
 	/**
@@ -471,4 +504,4 @@ class WP_URL2SNAPSHOT {
 
 $WP_URL2SNAPSHOT = new WP_URL2SNAPSHOT();
 
-endif;
\ No newline at end of file
+endif;