Only extract comic if it isn't already extracted (muuuuch faster for large comics)

ajax/showcomic.php

@@ -47,12 +47,22 @@ if ( $row = $sth->fetch(PDO::FETCH_ASSOC) ) {
 }
 $data["startindex"] = $currentpage;
 
+$extracted = false;
 if ( !is_dir($comicoutputfull) ) {
    mkdir($comicoutputfull, 0755, true);
+} else {
+   touch($comicoutputfull);
+   $extracted = true;
 }
 
 $files = array();
-if ( $ext == "cbz" ) {
+if ( $extracted ) {
+   $contents = glob($comicoutputfull . "*");
+   foreach ( $contents as $i ) {
+      $files[] = basename($i);
+   }
+} else {
+   if ( $ext == "cbz" ) {
       $zip = new ZipArchive();
       $opened = $zip->open($comicfull);
       for ( $i=0; $i<$zip->numFiles; $i++ ) {
@@ -67,7 +77,7 @@ if ( $ext == "cbz" ) {
             if ( $written ) $files[] = $imgname;
          }
       }
-} elseif ( $ext == "cbr" ) {
+   } elseif ( $ext == "cbr" ) {
       $rar = RarArchive::open($comicfull);
       $entries = $rar->getEntries();
       foreach ( $entries as $entry ) {
@@ -80,8 +90,9 @@ if ( $ext == "cbz" ) {
          }
       }
       unset($entry);
-} else {
+   } else {
       exit();
+   }
 }
 
 natsort($files);