initial commit

html/phpmyad/libraries/ob.lib.php

@@ -0,0 +1,96 @@
+<?php
+/* vim: set expandtab sw=4 ts=4 sts=4: */
+/**
+ * Output buffer functions for phpMyAdmin
+ *
+ * Copyright 2001 Jeremy Brand <jeremy@nirvani.net>
+ * http://www.jeremybrand.com/Jeremy/Brand/Jeremy_Brand.html
+ *
+ * Check for all the needed functions for output buffering
+ * Make some wrappers for the top and bottoms of our files.
+ *
+ * @package PhpMyAdmin
+ */
+
+/**
+ * This function be used eventually to support more modes.  It is needed
+ * because both header and footer functions must know what each other is
+ * doing.
+ *
+ * @staticvar integer remember last calculated value
+ * @return  integer  the output buffer mode
+ */
+function PMA_outBufferModeGet()
+{
+    static $mode = null;
+
+    if (null !== $mode) {
+        return $mode;
+    }
+
+    $mode = 0;
+
+    if ($GLOBALS['cfg']['OBGzip'] && function_exists('ob_start')) {
+        if (ini_get('output_handler') == 'ob_gzhandler') {
+            // If a user sets the output_handler in php.ini to ob_gzhandler, then
+            // any right frame file in phpMyAdmin will not be handled properly by
+            // the browser. My fix was to check the ini file within the
+            // PMA_outBufferModeGet() function.
+            $mode = 0;
+        } elseif (function_exists('ob_get_level') && ob_get_level() > 0) {
+            // If output buffering is enabled in php.ini it's not possible to
+            // add the ob_gzhandler without a warning message from php 4.3.0.
+            // Being better safe than sorry, check for any existing output handler
+            // instead of just checking the 'output_buffering' setting.
+            $mode = 0;
+        } else {
+            $mode = 1;
+        }
+    }
+
+    // Zero (0) is no mode or in other words output buffering is OFF.
+    // Follow 2^0, 2^1, 2^2, 2^3 type values for the modes.
+    // Usefull if we ever decide to combine modes.  Then a bitmask field of
+    // the sum of all modes will be the natural choice.
+
+    return $mode;
+} // end of the 'PMA_outBufferModeGet()' function
+
+
+/**
+ * This function will need to run at the top of all pages if output
+ * output buffering is turned on.  It also needs to be passed $mode from
+ * the PMA_outBufferModeGet() function or it will be useless.
+ *
+ */
+function PMA_outBufferPre()
+{
+    if ($mode = PMA_outBufferModeGet()) {
+        ob_start('ob_gzhandler');
+    }
+
+    header('X-ob_mode: ' . $mode);
+
+    register_shutdown_function('PMA_outBufferPost');
+} // end of the 'PMA_outBufferPre()' function
+
+
+/**
+ * This function will need to run at the bottom of all pages if output
+ * buffering is turned on.  It also needs to be passed $mode from the
+ * PMA_outBufferModeGet() function or it will be useless.
+ *
+ */
+function PMA_outBufferPost()
+{
+    if (ob_get_status() && PMA_outBufferModeGet()) {
+        ob_flush();
+    }
+    /**
+     * previously we had here an "else flush()" but some PHP versions
+     * (at least PHP 5.2.11) have a bug (49816) that produces garbled
+     * data
+     */
+} // end of the 'PMA_outBufferPost()' function
+
+?>