Merge "Correct documentation for EditFilter hook parameter"

[lhc/web/wiklou.git] / includes / OutputHandler.php

diff --git a/includes/OutputHandler.php b/includes/OutputHandler.php
index 4112f8a..78435e4 100644 (file)
--- a/includes/OutputHandler.php
+++ b/includes/OutputHandler.php
@@ -1,15 +1,30 @@
 <?php
 /**
- * Functions to be used with PHP's output buffer
+ * Functions to be used with PHP's output buffer.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
  *
  * @file
  */
 
 /**
  * Standard output handler for use with ob_start
- * 
+ *
  * @param $s string
- * 
+ *
  * @return string
  */
 function wfOutputHandler( $s ) {
@@ -70,13 +85,18 @@ function wfRequestExtension() {
 /**
  * Handler that compresses data with gzip if allowed by the Accept header.
  * Unlike ob_gzhandler, it works for HEAD requests too.
- * 
+ *
  * @param $s string
  *
  * @return string
  */
 function wfGzipHandler( $s ) {
-       if( !function_exists( 'gzencode' ) || headers_sent() ) {
+       if( !function_exists( 'gzencode' ) ) {
+               wfDebug( __FUNCTION__ . "() skipping compression (gzencode unavaible)\n" );
+               return $s;
+       }
+       if( headers_sent() ) {
+               wfDebug( __FUNCTION__ . "() skipping compression (headers already sent)\n" );
                return $s;
        }
 
@@ -90,6 +110,7 @@ function wfGzipHandler( $s ) {
        }
 
        if( wfClientAcceptsGzip() ) {
+               wfDebug( __FUNCTION__ . "() is compressing output\n" );
                header( 'Content-Encoding: gzip' );
                $s = gzencode( $s, 6 );
        }