Add script to list unused images

main/cron/img/list_unused_img.php

@@ -0,0 +1,114 @@
+<?php /* For licensing terms, see /license.txt */
+/**
+ * Cron script to list unused images
+ * @package chamilo.cron
+ */
+/**
+ * Includes and declarations
+ */
+if (PHP_SAPI!='cli') { die('Run this script through the command line or comment this line in the code'); }
+require_once '../../inc/global.inc.php';
+$path = api_get_path(SYS_CODE_PATH).'img/';
+ini_set('memory_limit','128M');
+ini_set('max_execution_time','240');
+$unused = array();
+global $_configuration;
+/**
+ * Main code
+ */
+// get all the available images and their directory
+$found_img = get_img_files($path);
+// Now, for each image, check if there is at least one reference
+chdir($_configuration['root_sys']);
+foreach ($found_img as $i => $p) {
+    $j = 0;
+    $output = @shell_exec('rgrep '.$i.' main/');
+    $outputs = explode('\n',$output);
+    foreach ($outputs as $line) {
+        if (substr($lastline,0,5)=='rgrep') {
+            //this means a permission error, ignore
+        } else {
+            $j++;
+        }
+    }
+    if ($j === 0) {
+        $unused[$i] = $p;
+    }
+} 
+
+echo '<table>';
+/*if (count($unexisting_img)<1) { die("No missing image<br />\n"); } else { echo "The following images were nowhere to be found: <br />\n<table>"; }
+foreach ($unexisting_img as $term => $file) {
+	echo "<tr><td>$term</td><td>in $file</td></tr>\n";
+}*/
+echo '<tr><td colspan="2">Existing images('.count($found_img).'), unused('.count($unused).')</td></tr>'."\n";
+echo '<tr><td>Image file</td><td>Used x times</td></tr>'."\n";
+$r = ksort($found_img);
+foreach ($unused as $term => $path) {
+  if (isset($unused[$term])) {
+    echo '<tr>';
+    echo '<td bgcolor="#55ff55">'.$term.'</td>';
+    echo '<td bgcolor="#55ff55">'.($path=='/'?'/':$path.'/').$term.'</td>';
+    echo '</tr>'."\n";
+  } else {
+    echo '<tr>';
+    echo '<td bgcolor="#ff5555">'.$term.'</td>';
+    echo '<td bgcolor="#ff5555">'.($path=='/'?'/':$path.'/').$term.'</td>';
+    echo '</tr>'."\n";
+  }
+}
+echo "</table>\n";
+
+
+function get_all_php_files($base_path) {
+    $list = scandir($base_path);
+    $files = array();
+    foreach ($list as $item) {
+    	if (substr($item,0,1)=='.') {continue;}
+        $special_dirs = array(api_get_path(SYS_TEST_PATH),api_get_path(SYS_COURSE_PATH),api_get_path(SYS_LANG_PATH),api_get_path(SYS_ARCHIVE_PATH));
+        if (in_array($base_path.$item.'/',$special_dirs)) {continue;}
+        if (is_dir($base_path.$item)) {
+        	$files = array_merge($files,get_all_php_files($base_path.$item.'/'));
+        } else {
+            //only analyse php files
+                $ext = substr($item,-4);
+        	if (in_array($ext,array('.php','html','.htm','.css'))) {
+                  $files[] = $base_path.$item;
+        	}
+        } 
+    }
+    $list = null;
+    return $files;
+}
+/**
+ * Get the list of available images
+ * @param string The path to start the scan from
+ */
+function get_img_files($path) {
+  $files = array();
+  //We know there are max 3 levels, so don't bother going recursive
+  $list = scandir($path);
+  foreach ($list as $entry) {
+    if (substr($entry,0,1)=='.') { continue; }
+    if (is_dir($path.$entry)) {
+      $sublist = scandir($path.$entry);
+      foreach ($sublist as $subentry) {
+        if (substr($subentry,0,1)=='.') { continue; }
+        if (is_dir($path.$entry.'/'.$subentry)) {
+          $subsublist = scandir($path.$entry.'/'.$subentry);
+          foreach ($subsublist as $subsubentry) {
+            if (substr($subsubentry,0,1)=='.') { continue; }
+            if (is_file($path.$entry.'/'.$subentry.'/'.$subsubentry)) {
+              $files[$subsubentry] = '/'.$entry.'/'.$subentry;
+            }
+          }
+        } elseif (is_file($path.$entry.'/'.$subentry)) {
+          $files[$subentry] = '/'.$entry;
+        }
+      }
+    } elseif (is_file($path.$entry)) {
+      $files[$entry] = '/';
+    }
+  }
+  return $files;
+}