<?php
/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
# ***** BEGIN LICENSE BLOCK *****
# This file is part of Plume Framework, a simple PHP Application Framework.
# Copyright (C) 2001-2007 Loic d'Anterroches and contributors.
#
# Plume Framework is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
#
# Plume Framework 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
# ***** END LICENSE BLOCK ***** */
class Pluf_Dispatcher
{
/**
* The unique method to call.
*
* @param string Query string ('')
*/
public static function dispatch($query='')
{
try {
$query = preg_replace('#^(/)+#', '/', '/'.$query);
$req = new Pluf_HTTP_Request($query);
$middleware = array();
foreach (Pluf::f('middleware_classes', array()) as $mw) {
$middleware[] = new $mw();
}
$skip = false;
foreach ($middleware as $mw) {
if (method_exists($mw, 'process_request')) {
$response = $mw->process_request($req);
if ($response !== false) {
// $response is a response
if (Pluf::f('pluf_runtime_header', false)) {
$response->headers['X-Perf-Runtime'] = sprintf('%.5f', (microtime(true) - $GLOBALS['_PX_starttime']));
}
$response->render($req->method != 'HEAD' and !defined('IN_UNIT_TESTS'));
$skip = true;
break;
}
}
}
if ($skip === false) {
$response = self::match($req);
if (!empty($req->response_vary_on)) {
$response->headers['Vary'] = $req->response_vary_on;
}
$middleware = array_reverse($middleware);
foreach ($middleware as $mw) {
if (method_exists($mw, 'process_response')) {
$response = $mw->process_response($req, $response);
}
}
if (Pluf::f('pluf_runtime_header', false)) {
$response->headers['X-Perf-Runtime'] = sprintf('%.5f', (microtime(true) - $GLOBALS['_PX_starttime']));
}
$response->render($req->method != 'HEAD' and !defined('IN_UNIT_TESTS'));
}
} catch (Exception $e) {
if (Pluf::f('debug', false) == true) {
$response = new Pluf_HTTP_Response_ServerErrorDebug($e);
} else {
$response = new Pluf_HTTP_Response_ServerError($e);
}
$response->render($req->method != 'HEAD' and !defined('IN_UNIT_TESTS'));
}
/**
* [signal]
*
* Pluf_Dispatcher::postDispatch
*
* [sender]
*
* Pluf_Dispatcher
*
* [description]
*
* This signal is sent after the rendering of a request. This
* means you cannot affect the response but you can use this
* hook to do some cleaning.
*
* [parameters]
*
* array('request' => $request,
* 'response' => $response)
*
*/
$params = array('request' => $req,
'response' => $response);
Pluf_Signal::send('Pluf_Dispatcher::postDispatch',
'Pluf_Dispatcher', $params);
return array($req, $response);
}
/**
* Match a query against the actions controllers.
*
* @param Pluf_HTTP_Request Request object
* @return Pluf_HTTP_Response Response object
*/
public static function match($req, $firstpass=true)
{
// Order the controllers by priority
foreach ($GLOBALS['_PX_views'] as $key => $control) {
$priority[$key] = $control['priority'];
}
array_multisort($priority, SORT_ASC, $GLOBALS['_PX_views']);
try {
foreach ($GLOBALS['_PX_views'] as $key => $ctl) {
$match = array();
if (preg_match($ctl['regex'], $req->query, $match)) {
$req->view = $ctl;
$m = new $ctl['model']();
if (isset($m->{$ctl['method'].'_precond'})) {
// Here we have preconditions to respects. If
// the "answer" is true, then ok go ahead, if
// not then it a response so return it or an
// exception so let it go.
$preconds = $m->{$ctl['method'].'_precond'};
if (!is_array($preconds)) {
$preconds = array($preconds);
}
foreach ($preconds as $precond) {
if (!is_array($precond)) {
$res = call_user_func_array(
explode('::', $precond),
array(&$req)
);
} else {
$res = call_user_func_array(
explode('::', $precond[0]),
array_merge(array(&$req),
array_slice($precond, 1))
);
}
if ($res !== true) {
return $res;
}
}
}
if (!isset($ctl['params'])) {
return $m->$ctl['method']($req, $match);
} else {
return $m->$ctl['method']($req, $match, $ctl['params']);
}
}
}
} catch (Pluf_HTTP_Error404 $e) {
// Need to add a 404 error handler
// something like Pluf::f('404_handler', 'class::method')
}
if ($firstpass and substr($req->query, -1) != '/') {
$req->query .= '/';
return self::match($req, false);
}
return new Pluf_HTTP_Response_NotFound($req);
}
/**
* Load the controllers.
*
* @param string File including the views.
* @param string Possible prefix to add to the views.
* @return bool Success.
*/
public static function loadControllers($file, $prefix='')
{
if (file_exists($file)) {
if ($prefix == '') {
$GLOBALS['_PX_views'] = include $file;
} else {
$GLOBALS['_PX_views'] = Pluf_Dispatcher::addPrefixToViewFile($prefix, $file);
}
return true;
}
return false;
}
/**
* Register an action controller.
*
* - The class must provide a "standalone" action method
* class::actionmethod($request, $match)
* - The priority is to order the controller matches.
* 5: Default, if the controller provides some content
* 1: If the controller provides a control before, without providing
* content, note that in this case the return code must be a redirection.
* 8: If the controller is providing a catch all case to replace the
* default 404 error page.
*
* @param string Class name providing the action controller
* @param string The method of the plugin to be called
* @param string Regex to match on the query string
* @param int Priority (5)
* @return void
*/
public static function registerController($model, $method, $regex, $priority=5)
{
if (!isset($GLOBALS['_PX_views'])) {
$GLOBALS['_PX_views'] = array();
}
$GLOBALS['_PX_views'][] = array('model' => $model,
'regex' => $regex,
'priority' => $priority,
'method' => $method);
}
/**
* Add the controllers of an application with a given prefix.
*
* Suppose you have a new app you want to use within another
* existing application, you may need to change the base URL not
* to conflict with the existing one. For example you want to have
* domain.com/forum-a/ and domain.com/forum-b/ to use 2 forums at
* the same time.
*
* This method do that, it takes a typical "view" file and rewrite
* the regex to append the prefix. Note that you should use the
* 'url' tag in the template and use Pluf_HTTP_URL_reverse in the
* views to not hardcode the urls or this will not work.
*
* @param string Prefix, for example '/alternate'.
* @param string File with the views.
* @return array Prefixed views.
*/
static public function addPrefixToViewFile($prefix, $file)
{
if (file_exists($file)) {
$views = include $file;
} else {
throw new Exception('View file not found: '.$file);
}
return Pluf_Dispatcher::addPrefixToViews($prefix, $views);
}
/**
* Add a prefix to an array of views.
*
* You can use it for example to not hardcode that in your CMS the
* blog is located as /blog but is configured in the configuration
* of the CMS, that way in French this could be /carnet.
*
* @param string Prefix, for example '/alternate'.
* @param array Array of the views.
* @return array Prefixed views.
*/
static public function addPrefixToViews($prefix, $views)
{
$res = array();
foreach ($views as $view) {
$view['regex'] = '#^'.$prefix.substr($view['regex'], 2);
$res[] = $view;
}
return $res;
}
}
accountmanagementengine