friendica_2021.01_tupambae_.../mod/help.php

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<?php
/**
* @file mod/help.php
*/
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use Friendica\App;
use Friendica\Content\Nav;
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use Friendica\Content\Text\Markdown;
use Friendica\Core\Config;
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use Friendica\Core\L10n;
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use Friendica\Core\System;
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function load_doc_file($s)
{
$lang = Config::get('system', 'language');
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$b = basename($s);
$d = dirname($s);
if (file_exists("$d/$lang/$b")) {
return file_get_contents("$d/$lang/$b");
}
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if (file_exists($s)) {
return file_get_contents($s);
}
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return '';
}
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function help_content(App $a)
{
Nav::setSelected('help');
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$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 < $a->argc; $x ++) {
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if (strlen($path)) {
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$path .= '/';
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}
$path .= $a->getArgumentValue($x);
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}
$title = basename($path);
$filename = $path;
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$text = load_doc_file('doc/' . $path . '.md');
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$a->page['title'] = L10n::t('Help:') . ' ' . str_replace('-', ' ', notags($title));
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}
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$home = load_doc_file('doc/Home.md');
if (!$text) {
$text = $home;
$filename = "Home";
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$a->page['title'] = L10n::t('Help');
} else {
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$a->page['aside'] = Markdown::convert($home, false);
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}
if (!strlen($text)) {
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header($_SERVER["SERVER_PROTOCOL"] . ' 404 ' . L10n::t('Not Found'));
$tpl = get_markup_template("404.tpl");
return replace_macros($tpl, [
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'$message' => L10n::t('Page not found.')
]);
}
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$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 = "<h2>TOC</h2><ul id='toc'>";
$lastlevel = 1;
$idnum = [0, 0, 0, 0, 0, 0, 0];
foreach ($lines as &$line) {
if (substr($line, 0, 2) == "<h") {
$level = substr($line, 2, 1);
if ($level != "r") {
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$level = intval($level);
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if ($level < $lastlevel) {
for ($k = $level; $k < $lastlevel; $k++) {
$toc .= "</ul>";
}
for ($k = $level + 1; $k < count($idnum); $k++) {
$idnum[$k] = 0;
}
}
if ($level > $lastlevel) {
$toc .= "<ul>";
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}
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$idnum[$level] ++;
$id = implode("_", array_slice($idnum, 1, $level));
$href = System::baseUrl() . "/help/{$filename}#{$id}";
$toc .= "<li><a href='{$href}'>" . strip_tags($line) . "</a></li>";
$line = "<a name='{$id}'></a>" . $line;
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$lastlevel = $level;
}
}
}
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for ($k = 0; $k < $lastlevel; $k++) {
$toc .= "</ul>";
}
$html = implode("\n", $lines);
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$a->page['aside'] = '<div class="help-aside-wrapper widget"><div id="toc-wrapper">' . $toc . '</div>' . $a->page['aside'] . '</div>';
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}
return $html;
}