removed mods directory from the ATutor codebase

[atutor.git] / mods / wiki / plugins / lib / speed.php

diff --git a/mods/wiki/plugins/lib/speed.php b/mods/wiki/plugins/lib/speed.php
deleted file mode 100644 (file)
index c3ebf82..0000000
--- a/mods/wiki/plugins/lib/speed.php
+++ /dev/null
@@ -1,89 +0,0 @@
-<?php
-
-/*
-   *** STILL BROKEN ! ***
-
-   This plugin implements some speed-ups for the HTTP protocol (used by
-   most proxies and all browsers maintaining their own cache). The
-   rendering of the current page will then be aborted, if this plugin
-   detects it is unnecessary, because a client told so.
-
-   It can compare against "ETags" and "Last-Modified" values, and aborts
-   further ewiki processing early, if one of these conditions matches, and
-   also terminates ewiki for HEAD method requests (because no output is
-   required then).
-
-   This will only take effect, if you disable EWIKI_NOCACHE (set it to 0).
-   (Should we output the "*: no-cache" headers conditionally? - how?)
-*/
-
-
-#-- plugin glue
-$ewiki_plugins["handler"][] = "ewiki_speed_abort";
-
-
-#-- implementation
-function ewiki_speed_abort($id, &$data, $action) {
-
-   $o = "";  // unused here
-   $inverse = 0;
-   $yes = 0;
-   $precond = 0;
-
-   #-- ETag comparisions
-   if (($if=$_SERVER["HTTP_IF_MATCH"]) || ($if=$_SERVER["HTTP_IF_NONE_MATCH"]) && ($inverse=1) ) {
-
-      ($data["version"])
-      and ($etag = ewiki_etag($data))
-      or ($etag = "never:matching:".time());
-
-      #-- walk through comparison values
-      foreach (explode(",", $if) as $match) {
-         $match = trim(trim($match), '"');
-         if (($match == "*") || ($match == $etag)) {
-            $yes = 1;
-         }
-         $precond = 1;
-      }
-
-   }
-
-   #-- check against modification time
-   if (($if=$_SERVER["HTTP_IF_MODIFIED_SINCE"]) || ($if=$_SERVER["HTTP_IF_UNMODIFIED_SINCE"]) && ($inverse=1)) {
-
-      ($modif = $data["lastmodified"])
-      or ($modif = UNIX_MILLENNIUM);
-
-      $if = strtotime(trim($if));
-
-      if ($modif > $if) {
-         $yes = 1;
-      }
-   }
-
-   #-- invert result
-   if ($inverse) {
-     $yes = $yes ? 0 : 1;
-   }
-
-   #-- abort ewiki rendering, if matched or senseful to do so
-   if ($yes || ($_SERVER["REQUEST_METHOD"] == "HEAD")) {
-      /*      
-         #ewiki_http_headers($o, $id, $data, $action);
-         (It was probably bad to send the ETag and Content-Version fields
-         for this http answer?)
-      */
-      header("Status: 304 Not Modified");
-      die(304);
-   }
-   elseif ($precond) {
-      if (!$inverse || ($_SERVER["REQUEST_METHOD"]!="GET")) {
-         header("Status: 412 Precondition Failed");
-         die(412);
-      }
-   }
-
-}
-
-
-?>
\ No newline at end of file