friendica_2021-01/mod/help.php

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<?php
/**
* @file mod/help.php
*/
use Friendica\App;
use Friendica\Content\Nav;
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use Friendica\Content\Text\Markdown;
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use Friendica\Core\System;
if (!function_exists('load_doc_file')) {
function load_doc_file($s) {
global $lang;
if (!isset($lang))
$lang = 'en';
$b = basename($s);
$d = dirname($s);
if (file_exists("$d/$lang/$b"))
return file_get_contents("$d/$lang/$b");
if (file_exists($s))
return file_get_contents($s);
return '';
}
}
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function help_content(App $a) {
Nav::setSelected('help');
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global $lang;
$text = '';
if ($a->argc > 1) {
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$path = '';
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// looping through the argv keys bigger than 0 to build
// a path relative to /help
for($x = 1; $x < argc(); $x ++) {
if(strlen($path))
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$path .= '/';
$path .= argv($x);
}
$title = basename($path);
$filename = $path;
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$text = load_doc_file('doc/' . $path . '.md');
$a->page['title'] = t('Help:') . ' ' . str_replace('-', ' ', notags($title));
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}
$home = load_doc_file('doc/Home.md');
if (!$text) {
$text = $home;
$filename = "Home";
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$a->page['title'] = t('Help');
} else {
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$a->page['aside'] = Markdown::convert($home, false);
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}
if (!strlen($text)) {
header($_SERVER["SERVER_PROTOCOL"] . ' 404 ' . t('Not Found'));
$tpl = get_markup_template("404.tpl");
return replace_macros($tpl, [
'$message' => t('Page not found.')
]);
}
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$html = Markdown::convert($text, false);
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if ($filename !== "Home") {
// create TOC but not for home
$lines = explode("\n", $html);
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$toc="<style>aside ul {padding-left: 1em;}aside h1{font-size:2em}</style><h2>TOC</h2><ul id='toc'>";
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$lastlevel=1;
$idnum = [0,0,0,0,0,0,0];
foreach($lines as &$line){
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if (substr($line,0,2)=="<h") {
$level = substr($line,2,1);
if ($level!="r") {
$level = intval($level);
if ($level<$lastlevel) {
for($k=$level;$k<$lastlevel; $k++) $toc.="</ul>";
for($k=$level+1;$k<count($idnum);$k++) $idnum[$k]=0;
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}
if ($level>$lastlevel) $toc.="<ul>";
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$idnum[$level]++;
$id = implode("_", array_slice($idnum,1,$level));
$href = System::baseUrl()."/help/{$filename}#{$id}";
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$toc .= "<li><a href='{$href}'>".strip_tags($line)."</a></li>";
$line = "<a name='{$id}'></a>".$line;
$lastlevel = $level;
}
}
}
for($k=0;$k<$lastlevel; $k++) $toc.="</ul>";
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$html = implode("\n",$lines);
$a->page['aside'] = '<section class="help-aside-wrapper">' . $toc . $a->page['aside'] . '</section>';
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}
$html = "
<style>
.md_warning {
padding: 1em; border: #ff0000 solid 2px;
background-color: #f9a3a3; color: #ffffff;
}
</style>".$html;
return $html;
}