compress_api.php

<?php
	# Mantis - a php based bugtracking system
	# Copyright (C) 2000 - 2002  Kenzaburo Ito - kenito@300baud.org
	# Copyright (C) 2002 - 2003  Mantis Team   - mantisbt-dev@lists.sourceforge.net
	# This program is distributed under the terms and conditions of the GPL
	# See the README and LICENSE files for details

	# --------------------------------------------------------
	# $Id: compress_api.php,v 1.10 2003-02-22 18:17:44 jfitzell Exp $
	# --------------------------------------------------------

	###########################################################################
	# Compression API
	#
	# Starts the buffering/compression (only if the compression option is ON)
	# This method should be called after all possible re-directs and
	#  access level checks.
	###########################################################################

	$g_compression_started = false;

	# ----------------
	# Check if compression should be enabled.
	function compress_is_enabled() {
		global $g_compression_started;

		#@@@ temporarily disable compression when using IIS because of
		#   issue #2953
		return ( $g_compression_started &&
				 ON == config_get( 'compress_html' ) &&
				OFF == config_get( 'use_iis' ) );
	}

	# ----------------
	# Output Buffering handler that either compresses the buffer or just
	#  returns it, depending on the return value of compress_is_enabled()
	function compress_handler( $p_buffer, $p_mode ) {
		if ( compress_is_enabled() ) {
			return ob_gzhandler( $p_buffer, $p_mode );
		} else {
			return $p_buffer;
		}
	}

	# ----------------
	# Enable output buffering with compression.
	function compress_enable() {
		global $g_compression_started;

		$g_compression_started = true;
	}

	# ----------------
	# Disable output buffering with compression.
	function compress_disable() {
		global $g_compression_started;

		$g_compression_started = false;
	}
?>