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--- cern:index [2020/09/18 18:03] – iwn
+++ cern:index [2023/09/29 17:29] – iwn
@@ Line 3: / Line 3: @@
 <file bash index.php>
 <?php
-$pwd = preg_replace("|^\/((\w)\w+)\/|","/eos/user/$2/$1/www/",$_SERVER["REQUEST_URI"]);
+preg_match("|^(\w+)\.|",$_SERVER["SERVER_NAME"],$usr); // get username from hostname $USER.web.cern.ch
-$pwd = preg_replace("(\?.*)","",$pwd);
+$pwd = preg_replace("|^((\w)\w+)|","/eos/user/$2/$1/www/",$usr[1]); // get base path
-preg_match("|^\/(\w+)\/|",$_SERVER["REQUEST_URI"],$usr);
+$pwd = $pwd.preg_replace("|^(?:\/$usr[1]\/)?([^\?]*)(?:\?.*)?$|","$1",$_SERVER["REQUEST_URI"]); // get subdirectory
-$pwdshort = preg_replace("(.*www/)","$usr[1]/",$pwd);
+//$pwd = $pwd.preg_replace("|(?<=\/)\?.*|","",$_SERVER["REQUEST_URI"]); // remove question mark
-chdir($pwd);
+$pwdshort = preg_replace("(.*www\/)","$usr[1]/",$pwd);
+if(!chdir($pwd)) { // try to go to directory
+  $msg = "Could not find ".$_SERVER["REQUEST_URI"]."...";
+  $msg .= "Could not find $pwd...";
+  print_r($_SERVER);
+  echo $msg; throw new Exception($msg);
+}
 ?>
 <html>
@@ Line 40: / Line 46: @@
     width: 320px;
     min-height: 330px;
-    max-height: 380px;
+    max-height: 360px;
   }
   h1 { color: rgb(40,40,80); }
@@ Line 108: / Line 114: @@
 <div>
 <?php
-$displayed = array();
+function matches($filename,$keywords,$regex) { // match filename to filter
+  if(isset($_GET['match'])){
+    foreach($keywords as $keyword){
+      if($regex){
+        if(!preg_match('/.*'.$keyword.'.*/', $filename))
+          return false;
+      }else{
+        if(!fnmatch('*'.$keyword.'*', $filename))
+          return false;
+      }
+    }
+  }
+  return true;
+}
+function is_animated($filename) { // check if gif is animated
+  // https://www.php.net/manual/en/function.imagecreatefromgif.php#104473
+  if(!($fh = @fopen($filename,'rb')))
+    return false;
+  $count = 0;
+  while(!feof($fh) && $count < 2) {
+    $chunk = fread($fh, 1024 * 100); //read 100kb at a time
+    $count += preg_match_all('#\x00\x21\xF9\x04.{4}\x00(\x2C|\x21)#s', $chunk, $matches);
+  }
+  fclose($fh);
+  return $count > 1;
+}
+$displayed = array();
 if($_GET['noplots']){
     print "Plots will not be displayed.\n";
 }else{
-    $other_exts = array('.pdf','.jpg','.jpeg','.jpg','.cxx','.eps','.root','.txt','.tex','.log','.dir','.info','.psd');
-    $filenames = glob("*.png"); natsort($filenames);
+    // Get images to be diplayed
+    $disp_filenames = array(); // images to be displayed
+    $png_filenames = glob("*.png");
     $keywords = explode(" ",$_GET['match']);
-    foreach($filenames as $filename){
+    $regex = isset($_GET['regexp']) && $_GET['regexp'];
-        if(isset($_GET['match'])){
+    foreach(glob("*.gif") as $filename){ // get animated GIFs
-          $matched = True;
+        if(!matches($filename,$keywords,$regex)) continue;
-          foreach($keywords as $keyword){
+        //$png_filename = str_replace('.gif','.png',$filename);
-            if(isset($_GET['regexp']) && $_GET['regexp']){
+        $png_filename = preg_replace("~\.gif$~",'.png',$filename);
-              if(!preg_match('/.*'.$keyword.'.*/', $filename)){
+        if(is_animated($filename)){
-                $matched = False;
+          if(in_array($png_filename,$png_filenames)) // remove PNG
-                continue;
+            $png_filenames = array_diff($png_filenames,array($png_filename));
-              }
+        }else if(in_array($png_filename,$png_filenames)){ // give preference to PNG
-            }else{
+          continue;
-              if(!fnmatch('*'.$keyword.'*', $filename)){
-                $matched = False;
-                continue;
-              }
-            }
-          }
-          if(!$matched) continue;
         }
+        array_push($disp_filenames,$filename);
+    }
+    foreach($png_filenames as $filename){ // get PNGs
+        if(!matches($filename,$keywords,$regex)) continue;
+        array_push($disp_filenames,$filename);
+    }
+    foreach(glob("*.jpg") as $filename){ // get JPGs
+        if(!matches($filename,$keywords,$regex)) continue;
+        $png_filename = preg_replace("~\.jpg$~",'.png',$filename);
+        $gif_filename = preg_replace("~\.jpg$~",'.gif',$filename);
+        if(!in_array($png_filename,$disp_filenames) and
+           !in_array($gif_filename,$disp_filenames)){ // give preference to PNG or animated GIF
+          array_push($disp_filenames,$filename);
+        }
+    }
+    // Display, and include other extensions
+    $other_exts = array('.pdf','.jpg','.png','.gif','.jpeg','.jpg','.eps','.root','.C','.cc','.cpp','.cxx','.txt','.tex','.log','.dir','.info','.psd');
+    natsort($disp_filenames); // natural sorting (for numbers)
+    foreach($disp_filenames as $filename){ // get PNGs
         array_push($displayed, $filename);
         $brfname = str_replace("_","_<wbr>",$filename); //&shy;
         print "<div class='pic'>\n";
         print "<h3><a href=\"$filename\">$brfname</a></h3>";
-        print "<a href=\"$filename\"><img src=\"$filename\" style=\"border: none; max-width: 300px; max-height: 360px; \"></a>";
+        print "<a href=\"$filename\"><img src=\"$filename\" style=\"border: none; max-width: 300px; max-height: 320px; \"></a>";
         $others = array();
         foreach($other_exts as $ex){
-            $other_filename = str_replace('.png', $ex, $filename);
+            //$other_filename = str_replace('.png', $ex, $filename);
-            if(file_exists($other_filename)){
+            $other_filename = preg_replace("~\.(png|gif)$~",$ex,$filename);
-              array_push($others, "<a class=\"file\" href=\"$other_filename\">[" . $ex . "]</a>");
+            if(strcmp($other_filename,$filename)==0) continue;
-              if($ex != '.txt') array_push($displayed, $other_filename);
+            if(!file_exists($other_filename)) continue;
-            }
+            array_push($others, "<a class=\"file\" href=\"$other_filename\">[" . $ex . "]</a>");
+            if($ex != '.txt') array_push($displayed, $other_filename);
         }
         if($others) print "<p>Also as ".implode(', ',$others)."</p>";

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