From d87b6ffe7312888d109428e6a939f33394549677 Mon Sep 17 00:00:00 2001
From: brettp <brettp@36083f99-b078-4883-b0ff-0f9b5a30f544>
Date: Wed, 13 Apr 2011 19:30:44 +0000
Subject: Fixes #3331. Changed cache schema to allow for JS/CSS views with
 slashes and dots.

git-svn-id: http://code.elgg.org/elgg/trunk@8986 36083f99-b078-4883-b0ff-0f9b5a30f544
---
 engine/handlers/cache_handler.php | 15 +++++++++------
 engine/lib/cache.php              |  2 +-
 engine/lib/elgglib.php            | 10 ++++------
 3 files changed, 14 insertions(+), 13 deletions(-)

diff --git a/engine/handlers/cache_handler.php b/engine/handlers/cache_handler.php
index 05c35171b..7d6f42dc3 100644
--- a/engine/handlers/cache_handler.php
+++ b/engine/handlers/cache_handler.php
@@ -3,7 +3,7 @@
  * Cache handler.
  *
  * External access to cached CSS and JavaScript views. The cached file URLS
- * should be of the form: cache/<type>/<view>/<viewtype>/<unique_id> where
+ * should be of the form: cache/<type>/<viewtype>/<name/of/view>.<unique_id>.<type> where
  * type is either css or js, view is the name of the cached view, and
  * unique_id is an identifier that is updated every time the cache is flushed.
  * The simplest way to maintain a unique identifier is to use the lastcache
@@ -50,13 +50,16 @@ if (!$request || !$simplecache_enabled) {
 	echo 'Cache error: bad request';
 	exit;
 }
-$request = explode('/', $request);
 
+// testing showed regex to be marginally faster than array / string functions over 100000 reps
+// it won't make a difference in real life and regex is easier to read.
+// <type>/<viewtype>/<name/of/view.and.dots>.<ts>.<type>
+$regex = '|([^/]+)/([^/]+)/(.+)\.([^\.]+)\.([^.]+)$|';
+preg_match($regex, $request, $matches);
 
-//cache/<type>/<view>/<viewtype>/
-$type = $request[0];
-$view = $request[1];
-$viewtype = $request[2];
+$type = $matches[1];
+$viewtype = $matches[2];
+$view = $matches[3];
 
 switch ($type) {
 	case 'css':
diff --git a/engine/lib/cache.php b/engine/lib/cache.php
index d4888f9d9..8529ae7fa 100644
--- a/engine/lib/cache.php
+++ b/engine/lib/cache.php
@@ -166,7 +166,7 @@ function elgg_get_simplecache_url($type, $view) {
 
 	if (elgg_is_simplecache_enabled()) {
 		$viewtype = elgg_get_viewtype();
-		$url = elgg_get_site_url() . "cache/$type/$view/$viewtype/$view.$lastcache.$type";
+		$url = elgg_get_site_url() . "cache/$type/$viewtype/$view.$lastcache.$type";
 	} else {
 		$url = elgg_get_site_url() . "$type/$view.$lastcache.$type";
 	}
diff --git a/engine/lib/elgglib.php b/engine/lib/elgglib.php
index 063e25fc4..a800aca7a 100644
--- a/engine/lib/elgglib.php
+++ b/engine/lib/elgglib.php
@@ -1771,12 +1771,10 @@ function elgg_cacheable_view_page_handler($page, $type) {
 		// translates to the url /js/calendars/jquery.fullcalendar.min.<ts>.js
 		// and the view js/calendars/jquery.fullcalendar.min
 		// we ignore the last two dots for the ts and the ext.
-		$last_part = array_pop($page);
-		$last_part_bits = explode('.', $last_part);
-		$last_part_bits = array_slice($last_part_bits, 0, -2);
-		$page[] = implode('.', $last_part_bits);
-
-		$view = implode('/', $page);
+		$page = implode('/', $page);
+		$regex = '|(.+)\.([^\.]+)\.([^.]+)$|';
+		preg_match($regex, $page, $matches);
+		$view = $matches[1];
 		$return = elgg_view("$type/$view");
 
 		header("Content-type: $content_type");
-- 
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