From 9d189605d5ccdbd7125f2e8839c63fa2028d44c1 Mon Sep 17 00:00:00 2001
From: Arun Persaud <arun@nubati.net>
Date: Tue, 8 May 2012 20:42:59 -0700
Subject: [PATCH] auto-versioning for js and css files. Needs .htaccess to be
 installed

The md5 of the file will be added to the filename of the .js or .css file.
.htaccess will remove these again, but the browser will be able to cache correctly now.
---
 .gitignore         |  1 +
 INSTALL            |  6 +++++-
 htaccess.template  | 10 ++++++++++
 include/output.php | 29 ++++++++++++++++++++++-------
 4 files changed, 38 insertions(+), 8 deletions(-)
 create mode 100644 htaccess.template

diff --git a/.gitignore b/.gitignore
index 6a0fae2..73d57b1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,3 +8,4 @@ pics/arrow2.svg
 pics/arrow3.svg
 scoretest.txt
 testscoring.php
+.htaccess
\ No newline at end of file
diff --git a/INSTALL b/INSTALL
index 1929213..886a94d 100644
--- a/INSTALL
+++ b/INSTALL
@@ -55,6 +55,10 @@ Installation
        return;
     }
 
-3) Log in and enjoy ;)
+3) install .htaccess: copy htaccess.template to .htaccess and edit it to set RewriteBase.
+   If your site is at http://example.org/~test/edoko you need to set
+   RewriteBase to /~test/edoko
+
+4) Log in and enjoy ;)
 
 Arun
diff --git a/htaccess.template b/htaccess.template
new file mode 100644
index 0000000..351842c
--- /dev/null
+++ b/htaccess.template
@@ -0,0 +1,10 @@
+RewriteEngine on
+
+# need to set this to your web path
+RewriteBase   /<web path to your files>
+
+# hide git directory (and others)
+RedirectMatch 404 \.(git|cvs|svn|bzr|hg)(/.*|$)
+
+# use autoversioning of js and css files
+RewriteRule ^(.*)\.[[:xdigit:]]{32}\.(css|js)$ $1.$2 [L]
diff --git a/include/output.php b/include/output.php
index 92c301f..a075fb3 100644
--- a/include/output.php
+++ b/include/output.php
@@ -26,6 +26,21 @@ if(!isset($HOST))
 
 /* functions which only ouput html  */
 
+function autoversion($file)
+{
+  /* changes the file name of e.g. css/style.css to css/style.<md5>.css/js
+   * this way the browser can cache the file and will reload it if the file changed
+   * needs to have .htaccess set up correctly to link back to css/style.css */
+
+  /* only use it for file that have an absolut path */
+  if(!file_exists(dirname($_SERVER['SCRIPT_FILENAME']). '/' . $file))
+    return $file;
+
+  $md5 = md5_file(dirname($_SERVER['SCRIPT_FILENAME']). '/' . $file);
+  return preg_replace('{\\.([^./]+)$}', ".$md5.\$1", $file);
+}
+
+
 function output_ask_for_new_game($playerA,$playerB,$playerC,$playerD,$oldgameid)
 {
   global $RULES;
@@ -410,13 +425,13 @@ function output_header()
      <meta charset="utf-8" />
      <meta name="viewport" content="width=device-width; initial-scale=1.0;" />
      <link rel="shortcut icon" href="pics/edoko-favicon.png" />
-     <link rel="stylesheet" href="css/normalize.css?v=1" />
-     <link rel="stylesheet" href="css/standard.css?v=41" />
-     <link rel="stylesheet" href="css/dateinput.css?v=1"/>
-     <script type="text/javascript" src="include/jquery.js"> </script>
-     <script type="text/javascript" src="include/jquery.tablesorter.js"></script>
-     <script type="text/javascript" src="include/jquery.tools.min.js"></script>
-     <script type="text/javascript" src="include/game.js"> </script>
+     <link rel="stylesheet" href="<?php echo autoversion("css/normalize.css"); ?>" />
+     <link rel="stylesheet" href="<?php echo autoversion("css/standard.css"); ?>" />
+     <link rel="stylesheet" href="<?php echo autoversion("css/dateinput.css"); ?>"/>
+     <script type="text/javascript" src="<?php echo autoversion("include/jquery.js"); ?>"> </script>
+     <script type="text/javascript" src="<?php echo autoversion("include/jquery.tablesorter.js"); ?>"></script>
+     <script type="text/javascript" src="<?php echo autoversion("include/jquery.tools.min.js"); ?>"></script>
+     <script type="text/javascript" src="<?php echo autoversion("include/game.js"); ?>"> </script>
      <script type="text/javascript">
      </script>
   </head>
-- 
2.17.1