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|
<?php
namespace Kanboard\Controller;
use Parsedown;
/**
* Documentation Viewer
*
* @package Kanboard\Controller
* @author Frederic Guillot
*/
class DocumentationController extends BaseController
{
public function show()
{
$page = $this->request->getStringParam('file', 'index');
if (!preg_match('/^[a-z0-9\-]+/', $page)) {
$page = 'index';
}
$filename = $this->getPageFilename($page);
$this->response->html($this->helper->layout->app('doc/show', $this->render($filename)));
}
/**
* Display keyboard shortcut
*/
public function shortcuts()
{
$this->response->html($this->template->render('config/keyboard_shortcuts'));
}
/**
* Prepare Markdown file
*
* @access private
* @param string $filename
* @return array
*/
private function render($filename)
{
$data = file_get_contents($filename);
$content = preg_replace_callback('/\((.*.markdown)\)/', array($this, 'replaceMarkdownUrl'), $data);
$content = preg_replace_callback('/\((screenshots.*\.png)\)/', array($this, 'replaceImageUrl'), $content);
list($title, ) = explode("\n", $data, 2);
return array(
'content' => Parsedown::instance()->text($content),
'title' => $title !== 'Documentation' ? t('Documentation: %s', $title) : $title,
);
}
/**
* Regex callback to replace Markdown links
*
* @access public
* @param array $matches
* @return string
*/
public function replaceMarkdownUrl(array $matches)
{
return '('.$this->helper->url->to('DocumentationController', 'show', array('file' => str_replace('.markdown', '', $matches[1]))).')';
}
/**
* Regex callback to replace image links
*
* @access public
* @param array $matches
* @return string
*/
public function replaceImageUrl(array $matches)
{
return '('.$this->getFileBaseUrl($matches[1]).')';
}
/**
* Get Markdown file according to the current language
*
* @access private
* @param string $page
* @return string
*/
private function getPageFilename($page)
{
return $this->getFileLocation($page . '.markdown') ?:
implode(DIRECTORY_SEPARATOR, array(ROOT_DIR, 'doc', 'index.markdown'));
}
/**
* Get base URL for Markdown links
*
* @access private
* @param string $filename
* @return string
*/
private function getFileBaseUrl($filename)
{
$language = $this->languageModel->getCurrentLanguage();
$path = $this->getFileLocation($filename);
if (strpos($path, $language) !== false) {
$url = implode('/', array('doc', $language, $filename));
} else {
$url = implode('/', array('doc', $filename));
}
return $this->helper->url->base().$url;
}
/**
* Get file location according to the current language
*
* @access private
* @param string $filename
* @return string
*/
private function getFileLocation($filename)
{
$files = array(
implode(DIRECTORY_SEPARATOR, array(ROOT_DIR, 'doc', $this->languageModel->getCurrentLanguage(), $filename)),
implode(DIRECTORY_SEPARATOR, array(ROOT_DIR, 'doc', $filename)),
);
foreach ($files as $filename) {
if (file_exists($filename)) {
return $filename;
}
}
return '';
}
}
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