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<?php
/****
*
* Renderer Class
* Controls rendering of a page, static or dynamic.
*
****/
require_once('Properties.php');
require_once('Page.php');
class Renderer {
var $prop; # the default decorator for the site.
# predefined types and filters: the order matters.
var $filters = array(
'txt' => array('text2html','symbols'),
'raw' => array('pre'),
'html' => array('symbols'),
'mod' => '',
);
function Renderer(&$prop) {
$this->prop = &$prop;
}
function displayError($title, $contents) {
$content = "<font color=red>Error:</font><br>$contents";
$this->display($title, $content);
}
function display($title, &$content) {
global $root, $decoratorurl, $nav, $ps, $robot, $static, $page;
require_once(dirname(__FILE__) . '/decorators/common.php');
$title = $this->prop->getGlobal('title-prefix') . $title;
$decor = $this->getDecorator();
$decoratorurl = $decor->url;
if (is_file($decor->template)) {
$nav_hide = true;
include($decor->template);
}
else {
echo $content;
}
}
function renderPage(&$page,$printable=false,$content='',$skipfilters=false) {
global $root, $decoratorurl, $nav, $ps, $robot, $static;
require_once(dirname(__FILE__) . '/decorators/common.php');
$decor = $this->getDecorator($page->get('decorator'));
if ($content == '') {
$content = & $this->getRenderedContent($page);
if ($page->type == 'php') {
$content = & $this->exec_php_file($page->phpfile);
}
# if content empty, return default index.
if ($content == '') {
if (is_file($decor->index))
$content = $this->exec_php_file($decor->index);
else
$content = $this->indexinfo($page);
}
}
$title = $page->get('title');
$title = $this->prop->getGlobal('title-prefix') . $title;
if ($page->fnf) {
$this->displayError("File not found", "That file does not exist.");
return;
}
$allowed = explode(' ',$this->prop->getGlobal('allowed-types'));
if (!in_array($page->type,$allowed)) {
$this->displayError(_("Not allowed"), _("Cannot display page. The following type is not allowed: ") . $page->type);
return;
}
$decoratorurl = $decor->url;
if (!$printable && is_file($decor->template)) {
# standard template
header("Last-Modified: " . gmdate("D, d M Y H:i:s", $page->get('mtime')) . " GMT");
include($decor->template);
}
else {
# page without any template
echo "<html>\n<head>\n<title>$title</title>\n</head>\n<body>\n";
echo $content;
echo "\n</body>\n</html>";
}
}
function &exec_php_file($phpfile) {
if ($phpfile == '') return;
ob_start();
include($phpfile);
$data = &ob_get_contents();
ob_end_clean();
return $data;
}
function &getRenderedContent(&$page) {
$content = $page->get('content');
$type = $page->get('type');
ob_start();
if (isset($this->filters[$type])) {
foreach($this->filters[$type] as $f) {
$this->applyFilter($f, $content, $page);
}
}
echo $content;
$data = &ob_get_contents();
ob_end_clean();
return $data;
}
/**
style handler
This function is called on ?action=style requests.
it dumps the correct css file, setting the headers correctly
for content type and caching. with d=<decoratorname> in the url,
you can override the decorator property of the given page.
**/
function style(&$page) {
global $root, $decoratorurl, $nav, $ps, $robot, $static;
// send mime type, this is a css file.
header('Content-type: text/css');
// send cache headers. we want the style page cached.
$offset = 60*60*3; // 3 hours
$expires = "Expires: " . gmdate("D, d M Y H:i:s", time() + $offset) . " GMT";
header("Cache-Control: public");
header($expires);
// load the decorator
require_once(dirname(__FILE__) . '/decorators/common.php');
$decorator_name = get('d',$page->get('decorator'));
$decor = $this->getDecorator($decorator_name);
$decoratorurl = $decor->url;
// set last modified
$lastmod = "Last-Modified: " . gmdate("D, d M Y H:i:s", filemtime($decor->style)) . " GMT";
header($lastmod);
// run style.php
include($decor->style);
}
function applyFilter($filter, &$content, &$page) {
require_once("filters/$filter.php");
$filter_object = new $filter();
$filter_object->apply($content,$page);
}
function getDecorator($name = '') {
$d = new Decorator();
if ($name == '')
$d->name = $this->prop->getGlobal('decorator');
else
$d->name = $name;
// try possible dirs, until we find a decorator
// this is kinda silly, we should just decide
// where it must go.
// map url => directory
$docroot = $this->prop->getGlobal('sitedocroot');
$urlroot = $this->prop->getGlobal('siteroot');
$libfile = dirname(__FILE__);
$liburl = $this->prop->getGlobal('liburl');
$candidates = array(
"$urlroot/.decorators/$d->name" => "$docroot/.decorators/$d->name",
"$urlroot/$d->name" => "$docroot/$d->name",
"$liburl/decorators/$d->name" => "$libfile/decorators/$d->name",
);
foreach($candidates as $url => $dir) {
if (is_dir($dir)) break;
}
$d->url = $url;
$d->template = "$dir/template.php";
$d->style = "$dir/style.php";
if (file_exists("$dir/index.php"))
$d->index = "$dir/index.php";
$d->error = "$dir/error.php";
return $d;
}
function displayFnf(&$page) {
$d = $this->getDecorator();
$fnfpath = $page->path;
while($page->fnf) {
$page = $page->parent();
}
$path = $page->path ? $page->path : '/';
$newpagelink = alink($path . "?a=edit&ea=newedit&path=" . urlencode($fnfpath), _("Create this page"));
if (is_file($d->error)) {
ob_start();
include($d->error);
$content = &ob_get_contents();
ob_end_clean();
}
else {
$content = "<p>404 Page not found</p><p>The web page you seek<br />Cannot be located, but<br />Countless more exist.</p>";
$content .= $newpagelink;
}
$this->display("File not found", $content);
}
function indexinfo(&$page) {
$children = $page->children();
foreach($children as $child) {
$ret .= "<dl class=index>\n";
$ret .= "<dt>" . alink($child->path .'/',$child->get('title')) . "</dt>\n";
$ret .= "<dd>" . $child->get('description') . "</dd>\n";
$ret .= "</dl>\n";
}
return $ret;
}
} // end class
class Decorator {
var $index;
var $style;
var $template;
var $name;
var $url;
}
return;
?>
|
