streams/Zotlabs/Module/Help.php

<?php
namespace Zotlabs\Module;

use App;
use Zotlabs\Web\Controller;
use Zotlabs\Lib\System;

require_once('include/help.php');

/**
 * You can create local site resources in doc/site 
 */
class Help extends Controller {

	function get() {
		nav_set_selected('Help');

		if($_REQUEST['search']) {
			$o .= '<div id="help-content" class="generic-content-wrapper">';
			$o .= '<div class="section-title-wrapper">';
			$o .= '<h2>' . t('Documentation Search') . ' - ' . htmlspecialchars($_REQUEST['search']) . '</h2>';
			$o .= '</div>';
			$o .= '<div class="section-content-wrapper">';

			$r = search_doc_files($_REQUEST['search']);
			if($r) {
				$o .= '<ul class="help-searchlist">';
				foreach($r as $rr) {
					$dirname = dirname($rr['v']);
					$fname = basename($rr['v']);
					$fname = substr($fname, 0, strrpos($fname, '.'));
					$path = trim(substr($dirname, 4), '/');

					$o .= '<li><a href="help/' . (($path) ? $path . '/' : '') . $fname . '" >' . ucwords(str_replace('_',' ',notags($fname))) . '</a><br>'
						. '<b><i>' . 'help/' . (($path) ? $path . '/' : '') . $fname . '</i></b><br>'
						. '...' . str_replace('$Projectname', System::get_platform_name(), $rr['text']) . '...<br><br></li>';
				}
				$o .= '</ul>';
				$o .= '</div>';
				$o .= '</div>';
			}

			return $o;
		}
				
				
		if(argc() > 2 && argv(argc()-2) === 'assets') {
			$path = '';
			for($x = 1; $x < argc(); $x ++) {
				if(strlen($path))
					$path .= '/';
				$path .= argv($x);
			}
			$realpath = 'doc/' . $path;
			 //Set the content-type header as appropriate
			$imageInfo = getimagesize($realpath);
			switch ($imageInfo[2]) {
				case IMAGETYPE_JPEG:
					header("Content-Type: image/jpeg");
					break;
				case IMAGETYPE_GIF:
					header("Content-Type: image/gif");
					break;
				case IMAGETYPE_PNG:
					header("Content-Type: image/png");
					break;
			   default:
					break;
			}
			header("Content-Length: " . filesize($realpath));

			// dump the picture and stop the script
			readfile($realpath);
			killme();
		}

		if (argc() === 1) {
			$files = self::listdir('doc');
			
			if ($files) {
				foreach ($files as $file) {
					if ((! strpos($file,'/site/')) && file_exists(str_replace('doc/','doc/site/',$file))) {
						continue;
					}
					if (strpos($file,'README')) {
						continue;
					}
					if (preg_match('/\/(..|..\-..)\//',$file,$matches)) {
						$language = $matches[1];
					}
					else {
						$language = t('Unknown language');
					}
					if ($language === substr(App::$language,0,2)) {
						$language = '';
					}

					$link = str_replace( [ 'doc/', '.mc' ], [ 'help/', '' ], $file);
					if (strpos($link,'/global/') !== false || strpos($link,'/media/') !== false) {
						continue;
					}
					$content .= '<div class="nav-pills"><a href="' . $link . '">' . ucfirst(basename($link)) . '</a></div>' . (($language) ? " [$language]" : '') . EOL;
				}
			}
		}
		else {
			$content =  get_help_content();
		}
		

		return replace_macros(get_markup_template('help.tpl'), array(
			'$title'      => t('$Projectname Documentation'),
			'$tocHeading' => t('Contents'),
			'$content'    => $content,
			'$heading'    => $heading,
			'$language'   => $language
		));
	}

	static function listdir($path) {
		$results = [];
		$handle = opendir($path);
		if (! $handle) {
			return $results;
		}
		while (false !== ($file = readdir($handle))) {
			if ($file === '.' || $file === '..') {
				continue;
			}
			if (is_dir($path . '/' . $file)) {
				$results = array_merge($results, self::listdir($path . '/' . $file));
			}
			else {
				$results[] = $path . '/' . $file;
			}
		}
		closedir($handle);
		return $results;
	}


}