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|
<?php
/**
*
* PHP version 5.4
*
* @category Mageia
* @package Mageia\Web\www\Pinq
* @author rda <rda@mageia.org>
* @link http://www.mageia.org/
*
* @license http://www.gnu.org/licenses/gpl-2.0.html GNU GPL v2+
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License aspublished by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
/**
*/
class Pinq_Controller
{
/**
* @param string $dir root application directory
* @param array $server $_SERVER array
*
*/
public function __construct($dir, $server)
{
$this->_app_root = $dir;
$this->_server = $server;
}
/**
*/
public static function run($app_root, $routes, $_server, $cache)
{
$pc = new self($app_root, $_server);
$pc->init();
if (isset($cache)
&& $res = $cache->get($pc->get_cache_key())) {
} else {
$res = $pc->_run($routes);
if (isset($cache)
&& isset($res['cache'])
&& $res['cache'] > 0) {
$cache->set($res, $pc->cache_key());
}
}
$pc->publish($res);
unset($pc);
}
/**
*/
public function init()
{
$this->method = $this->_server['REQUEST_METHOD'];
$this->uri = $this->_server['REQUEST_URI'];
if (strpos('?', $this->uri) !== false) {
$uri = explode('?', $this->uri);
$this->query = $uri[1];
$this->uri = $uri[0];
}
}
/**
*/
public function get_cache_key()
{
return sha1(implode('#', array($this->method, $this->uri)));
}
/**
* Prints document headers and contents.
* It _expects_ $res to be correctly formatted.
*
* @param array $res as returned by self::_run()
*
* @return void
*/
public function publish($res)
{
//$res['statuts']
// Content-Length must match buffer + body
foreach ($res['headers'] as $h => $v) {
header($h);
}
echo $res['buffer'];
echo $res['body'];
}
/**
* @param array $routes
*
* @return boolean
*/
private function _run($routes = null)
{
// static, image files are expected to be served directly by the server.
$ret = array(
'body' => '',
'buffer' => '',
'cache' => 0,
'headers' => array()
);
// detect path language; if not set, redirect to best fallback language (English for now), end
$this->lang = $this->get_request_language($this->uri);
if (!$this->lang_is_managed($this->lang)) {
// TODO - ignore, with a special code or redirect?
$this->lang = 'en';
}
// TODO ob_start, etc.?
if ($app = $this->matches_route($this->uri, $routes)) {
// 1.
$ret = $this->delegate_to($app);
} elseif (false) { // TODO
// 2.
// delegate to local script
// TODO look at local code at $uri, and decide if we can/should load it and decorate it. How?
} elseif ($this->fallback_to_previous_mode($this->uri, $this->lang)) {
// 3.
// finally, act as we used to before
} else {
// 4.
// if nothing matched, well...
$ret = $this->delegate_to('error', array('code' => '404'));
}
return $ret;
}
/**
* @param string $uri
* @param array $routes
*
* @return string
*/
private function matches_route($uri, $routes)
{
$re = '
/
\/(([a-zA-Z\-\_]{2,5})\/)?
(.*)
/x';
if (preg_match_all($re, $uri, $matches)) {
$this->_lang = $matches[2][0];
$this->_path = $matches[3][0];
}
if (is_array($routes) && count($routes) > 0) {
foreach ($routes as $r => $app) {
$re = '/' . $r . '/';
if (preg_match_all($re, $uri, $m)) {
return $app;
}
}
}
return null;
}
/**
* @param string $uri
*
* @return string
*/
function get_request_language($uri)
{
$tu = explode('/', $uri);
$lang = $tu[1];
$sl = strlen($lang);
if ($this->lang_exists($lang)) {
return $lang;
}
return null;
}
/**
*/
function lang_exists($lang)
{
// is it a valid language code? ll[-cc] or ll[_CC]?
return true;
}
/**
*/
function lang_is_managed($lang)
{
// in managed languages array?
return true;
}
/**
* @param string $app_name
*
* @return boolean
*/
private function delegate_to($app_name, $options = null)
{
$app_cont = realpath(sprintf('%s/apps/%s/%s_app.php', $this->_app_root, $app_name, $app_name));
if (!file_exists($app_cont)) {
throw new Exception(sprintf('Expected "%s" app, found no definition file.', $app_name));
}
include $app_cont;
$a = new $app_name($this, $options);
return $a->run();
}
/**
* @return boolean true if fallback happened
*/
function fallback_to_previous_mode($uri, $lang)
{
$uri = explode('?', $uri);
$qs = count($uri) > 1 ? $uri[1] : null;
$uri = $uri[0];
$alt_uri = sprintf(
'/%s/%s',
'en',
substr($uri, strlen($lang) + 2)
);
$test_uris = array(
$uri,
$uri . 'index.php',
$uri . 'index.html',
$alt_uri,
$alt_uri . 'index.php',
$alt_uri . 'index.html'
);
$found = false;
foreach ($test_uris as $inc_uri) {
$real_file = realpath($this->_app_root . $inc_uri);
if (file_exists($real_file) && !is_dir($real_file)) {
$found = true;
break;
}
}
if ($found) {
chdir(dirname($real_file));
require $real_file;
return true;
}
return false;
}
}
|
