wyoj-system/app/libs/uoj-html-lib.php

<?php

function uojHandleAtSign($str, $uri) {
	$referrers = array();
	$res = preg_replace_callback('/@(@|[a-zA-Z0-9_]{1,20})/', function($matches) use (&$referrers) {
		if ($matches[1] === '@') {
			return '@';
		} else {
			$user = queryUser($matches[1]);
			if ($user == null) {
				return $matches[0];
			} else {
				$referrers[$user['username']] = '';
				return '<span class="uoj-username" data-rating="'.$user['rating'].'">@'.$user['username'].'</span>';
			}
		}
	}, $str);
	
	$referrers_list = array();
	foreach ($referrers as $referrer => $val) {
		$referrers_list[] = $referrer;
	}
	
	return array($res, $referrers_list);
}

function uojFilePreview($file_name, $output_limit, $file_type = 'text') {
	switch ($file_type) {
		case 'text':
			return strOmit(file_get_contents($file_name, false, null, 0, $output_limit + 4), $output_limit);
		default:
			return strOmit(shell_exec('xxd -g 4 -l 5000 ' . escapeshellarg($file_name) . ' | head -c ' . ($output_limit + 4)), $output_limit);
	}
}

function uojIncludeView($name, $view_params = array()) {
	extract($view_params);
	include $_SERVER['DOCUMENT_ROOT'].'/app/views/'.$name.'.php';
}

function redirectTo($url) {
	header('Location: '.$url);
	die();
}
function permanentlyRedirectTo($url) {
	header("HTTP/1.1 301 Moved Permanently"); 
	header('Location: '.$url);
	die();
}
function redirectToLogin() {
	if (UOJContext::isAjax()) {
		die('please <a href="'.HTML::url('/login').'">login</a>');
	} else {
		header('Location: '.HTML::url('/login'));
		die();
	}
}
function becomeMsgPage($msg, $title = '消息') {
	if (UOJContext::isAjax()) {
		die($msg);
	} else {
		echoUOJPageHeader($title);
		echo $msg;
		echoUOJPageFooter();
		die();
	}
}
function become404Page() {
	header($_SERVER['SERVER_PROTOCOL'] . " 404 Not Found", true, 404);
	becomeMsgPage('<div class="text-center"><div style="font-size:233px">404</div><p>唔……未找到该页面……你是从哪里点进来的……&gt;_&lt;……</p></div>', '404');
}
function become403Page() {
	header($_SERVER['SERVER_PROTOCOL'] . " 403 Forbidden", true, 403); 
	becomeMsgPage('<div class="text-center"><div style="font-size:233px">403</div><p>禁止入内！ T_T</p></div>', '403');
}

function getUserLink($username, $rating = null, $certs = null) {
	if (validateUsername($username) && ($user = queryUser($username))) {
		if ($rating == null) {
			$rating = $user['rating'];
		}
		if ($cert == null) {
			$certs = $user['certs'];
		}
		return '<span class="uoj-username" data-rating="'.$rating.'" data-certs="'.$certs.'">'.$username.'</span>';
	} else {
		$esc_username = HTML::escape($username);
		return '<span>'.$esc_username.'</span>';
	}
}

function getRemoteProblemLink($rpid) {
	$rp = queryRemoteProblemBrief($rpid);
	return '<a href="/rp/' . $rpid . '">' . $rp['title'] . '</a>';
}

function getProblemLink($problem, $problem_title = '!title_only') {
	if ($problem_title == '!title_only') {
		$problem_title = $problem['title'];
	} elseif ($problem_title == '!id_and_title') {
		$problem_title = "#${problem['id']}. ${problem['title']}";
	}
	return '<a href="/problem/'.$problem['id'].'">'.$problem_title.'</a>';
}
function getContestProblemLink($problem, $contest_id, $problem_title = '!title_only') {
	if ($problem_title == '!title_only') {
		$problem_title = $problem['title'];
	} elseif ($problem_title == '!id_and_title') {
		$problem_title = "#{$problem['id']}. {$problem['title']}";
	}
	return '<a href="/contest/'.$contest_id.'/problem/'.$problem['id'].'">'.$problem_title.'</a>';
}
function getBlogLink($id) {
	if (validateUInt($id) && $blog = queryBlog($id)) {
		return '<a href="/blogs/'.$id.'">'.$blog['title'].'</a>';
	}
}
function getClickZanBlock($type, $id, $cnt, $val = null) {
	if ($val == null) {
		$val = queryZanVal($id, $type, Auth::user());
	}
	return '<div class="uoj-click-zan-block" data-id="'.$id.'" data-type="'.$type.'" data-val="'.$val.'" data-cnt="'.$cnt.'"></div>';
}


function getLongTablePageRawUri($page) {
	$path = strtok(UOJContext::requestURI(), '?');
	$query_string = strtok('?');
	parse_str($query_string, $param);
			
	$param['page'] = $page;
	if ($page == 1) {
		unset($param['page']);
	}
			
	if ($param) {
		return $path . '?' . http_build_query($param);
	} else {
		return $path;
	}
}
function getLongTablePageUri($page) {
	return HTML::escape(getLongTablePageRawUri($page));
}

function echoLongTable($col_names, $table_name, $cond, $tail, $header_row, $print_row, $config) {
	$pag_config = $config;
	$pag_config['col_names'] = $col_names;
	$pag_config['table_name'] = $table_name;
	$pag_config['cond'] = $cond;
	$pag_config['tail'] = $tail;
	$pag = new Paginator($pag_config);

	$div_classes = isset($config['div_classes']) ? $config['div_classes'] : array('table-responsive', 'shadow', 'my-4');
	$table_classes = isset($config['table_classes']) ? $config['table_classes'] : array('table', 'table-bordered', 'table-hover', 'table-striped', 'table-text-center');
		
	echo '<div class="', join($div_classes, ' '), '">';
	echo '<table class="', join($table_classes, ' '), '">';
	echo '<thead>';
	echo $header_row;
	echo '</thead>';
	echo '<tbody>';

	foreach ($pag->get() as $idx => $row) {
		if (isset($config['get_row_index'])) {
			$print_row($row, $idx);
		} else {
			$print_row($row);
		}
	}
	if ($pag->isEmpty()) {
		echo '<tr><td colspan="233">'.UOJLocale::get('none').'</td></tr>';
	}

	echo '</tbody>';
	echo '</table>';
	echo '</div>';
	
	if (isset($config['print_after_table'])) {
		$fun = $config['print_after_table'];
		$fun();
	}
		
	echo $pag->pagination();
}

function getSubmissionStatusDetails($submission) {
	$html = '<td colspan="233" style="vertical-align: middle">';
	
	$out_status = explode(', ', $submission['status'])[0];
	
	$fly = '<img src="/images/utility/qpx_n/b37.gif" alt="小熊像超人一样飞" class="img-rounded" />';
	$think = '<img src="/images/utility/qpx_n/b29.gif" alt="小熊像在思考" class="img-rounded" />';
	
	if ($out_status == 'Judged') {
		$status_text = '<strong>Judged!</strong>';
		$status_img = $fly;
	} else {
		if ($submission['status_details'] !== '') {
			$status_img = $fly;
			$status_text = HTML::escape($submission['status_details']);
		} else {
			$status_img = $think;
			$status_text = $out_status;
		}
	}
	$html .= '<div class="uoj-status-details-img-div">' . $status_img . '</div>';
	$html .= '<div class="uoj-status-details-text-div">' . $status_text . '</div>';

	$html .= '</td>';
	return $html;
}

function echoSubmission($submission, $config, $user) {
	$problem = queryProblemBrief($submission['problem_id']);
	$submitterLink = getUserLink($submission['submitter']);
	
	if ($submission['score'] == null) {
		$used_time_str = "/";
		$used_memory_str = "/";
	} else {
		$used_time_str = $submission['used_time'] . 'ms';
		$used_memory_str = $submission['used_memory'] . 'kb';
	}
	
	$status = explode(', ', $submission['status'])[0];
	
	$show_status_details = Auth::check() && ($submission['submitter'] === Auth::id() || isSuperUser(queryUser(Auth::id()))) && $status !== 'Judged';
	
	if (!$show_status_details) {
		echo '<tr>';
	} else {
		echo '<tr class="warning">';
	}
	if (!isset($config['id_hidden'])) {
		echo '<td><a href="/submission/', $submission['id'], '">#', $submission['id'], '</a></td>';
	}
	if (!isset($config['problem_hidden'])) {
		if ($submission['contest_id']) {
			echo '<td>', getContestProblemLink($problem, $submission['contest_id'], '!id_and_title'), '</td>';
		} else if ($submission['problem_id'] != 260328) {
			echo '<td>', getProblemLink($problem, '!id_and_title'), '</td>';
		} else {
			foreach (json_decode($submission['content'], true)['config'] as $row)
				if ($row[0] == 'rpid') {
					$rpid = $row[1];
					break;
				}
			echo '<td>' . getRemoteProblemLink($rpid) . '</td>';
		}
	}
	if (!isset($config['submitter_hidden'])) {
		echo '<td>', $submitterLink, '</td>';
	}
	if (!isset($config['result_hidden'])) {
		echo '<td>';
		if ($status == 'Judged') {
			if ($submission['score'] == null) {
				echo '<a href="/submission/', $submission['id'], '" class="small">', $submission['result_error'], '</a>';
			} else {
				echo '<a href="/submission/', $submission['id'], '" class="uoj-score">', $submission['score'], '</a>';
			}
		} else {
			echo '<a href="/submission/', $submission['id'], '" class="small">', $status, '</a>';
		}
		echo '</td>';
	}
	if (!isset($config['used_time_hidden'])) {
		echo '<td>', $used_time_str, '</td>';
	}
	if (!isset($config['used_memory_hidden'])) {
		echo '<td>', $used_memory_str, '</td>';
	}

	echo '<td>', '<a href="/submission/', $submission['id'], '">', $submission['language'], '</a>', '</td>';

	if ($submission['tot_size'] < 1024) {
		$size_str = $submission['tot_size'] . 'b';
	} else {
		$size_str = sprintf("%.1f", $submission['tot_size'] / 1024) . 'kb';
	}
	echo '<td>', $size_str, '</td>';

	if (!isset($config['submit_time_hidden'])) {
		echo '<td><small>', $submission['submit_time'], '</small></td>';
	}
	if (!isset($config['judge_time_hidden'])) {
		echo '<td><small>', $submission['judge_time'], '</small></td>';
	}
	echo '</tr>';
	if ($show_status_details) {
		echo '<tr id="', "status_details_{$submission['id']}", '" class="info">';
		echo getSubmissionStatusDetails($submission);
		echo '</tr>';
		echo '<script type="text/javascript">update_judgement_status_details('.$submission['id'].')</script>';
	}
}


function echoSubmissionsListOnlyOne($submission, $config, $user) {
	echo '<div class="table-responsive shadow my-4">';
	echo '<table class="table table-bordered table-text-center">';
	echo '<thead>';
	echo '<tr>';
	if (!isset($config['id_hidden'])) {
		echo '<th>ID</th>';
	}
	if (!isset($config['problem_hidden'])) {
		echo '<th>'.UOJLocale::get('problems::problem').'</th>';
	}
	if (!isset($config['submitter_hidden'])) {
		echo '<th>'.UOJLocale::get('problems::submitter').'</th>';
	}
	if (!isset($config['result_hidden'])) {
		echo '<th>'.UOJLocale::get('problems::result').'</th>';
	}
	if (!isset($config['used_time_hidden'])) {
		echo '<th>'.UOJLocale::get('problems::used time').'</th>';
	}
	if (!isset($config['used_memory_hidden'])) {
		echo '<th>'.UOJLocale::get('problems::used memory').'</th>';
	}
	echo '<th>'.UOJLocale::get('problems::language').'</th>';
	echo '<th>'.UOJLocale::get('problems::file size').'</th>';
	if (!isset($config['submit_time_hidden'])) {
		echo '<th>'.UOJLocale::get('problems::submit time').'</th>';
	}
	if (!isset($config['judge_time_hidden'])) {
		echo '<th>'.UOJLocale::get('problems::judge time').'</th>';
	}
	echo '</tr>';
	echo '</thead>';
	echo '<tbody>';
	echoSubmission($submission, $config, $user);
	echo '</tbody>';
	echo '</table>';
	echo '</div>';
}


function echoSubmissionsList($cond, $tail, $config, $user) {
	$header_row = '<tr>';
	$col_names = array();
	$col_names[] = 'submissions.status_details';
	$col_names[] = 'submissions.status';
	$col_names[] = 'submissions.result_error';
	$col_names[] = 'submissions.score';
	$col_names[] = 'submissions.content';
	
	if (!isset($config['id_hidden'])) {
		$header_row .= '<th>ID</th>';
		$col_names[] = 'submissions.id';
	}
	if (!isset($config['problem_hidden'])) {
		$header_row .= '<th>'.UOJLocale::get('problems::problem').'</th>';
		$col_names[] = 'submissions.problem_id';
		$col_names[] = 'submissions.contest_id';
	}
	if (!isset($config['submitter_hidden'])) {
		$header_row .= '<th>'.UOJLocale::get('problems::submitter').'</th>';
		$col_names[] = 'submissions.submitter';
	}
	if (!isset($config['result_hidden'])) {
		$header_row .= '<th>'.UOJLocale::get('problems::result').'</th>';
	}
	if (!isset($config['used_time_hidden'])) {
		$header_row .= '<th>'.UOJLocale::get('problems::used time').'</th>';
		$col_names[] = 'submissions.used_time';
	}
	if (!isset($config['used_memory_hidden'])) {
		$header_row .= '<th>'.UOJLocale::get('problems::used memory').'</th>';
		$col_names[] = 'submissions.used_memory';
	}
	$header_row .= '<th>'.UOJLocale::get('problems::language').'</th>';
	$col_names[] = 'submissions.language';
	$header_row .= '<th>'.UOJLocale::get('problems::file size').'</th>';
	$col_names[] = 'submissions.tot_size';

	if (!isset($config['submit_time_hidden'])) {
		$header_row .= '<th>'.UOJLocale::get('problems::submit time').'</th>';
		$col_names[] = 'submissions.submit_time';
	}
	if (!isset($config['judge_time_hidden'])) {
		$header_row .= '<th>'.UOJLocale::get('problems::judge time').'</th>';
		$col_names[] = 'submissions.judge_time';
	}
	$header_row .= '</tr>';
	
	$table_name = isset($config['table_name']) ? $config['table_name'] : 'submissions';
	
	if (!isSuperUser($user)) {
		if ($user != null) {
			$permission_cond = "submissions.is_hidden = false or (submissions.is_hidden = true and submissions.problem_id in (select problem_id from problems_permissions where username = '{$user['username']}')) or (submissions.is_hidden = 1 and (select max(find_in_set(submissions.problem_id, privs)) as nr from user_info where username like 'group_%' and find_in_set(username, '{$user['extgroups']}')))";
		} else {
			$permission_cond = "submissions.is_hidden = false";
		}
		if ($cond !== '1') {
			$cond = "($cond) and ($permission_cond)";
		} else {
			$cond = $permission_cond;
		}
	}
	
	$table_config = isset($config['table_config']) ? $config['table_config'] : null;
	
	echoLongTable($col_names, $table_name, $cond, $tail, $header_row,
		function($submission) use ($config, $user) {
			echoSubmission($submission, $config, $user);
		}, $table_config);
}

function echoShortList($header, $rows, $print_row) {	
	echo '<div class="table-responsive"><table class="table table-bordered table-hover table-striped table-text-center">';
	echo '<thead>';
	echo $header;
	echo '</thead>';
	echo '<tbody>';

	foreach ($rows as $idx => $row)
		$print_row($row);
	if (empty($rows))
		echo '<tr><td colspan="233">'.UOJLocale::get('none').'</td></tr>';
	echo '</tbody>';
	echo '</table>';
	echo '</div>';
}

function echoBelongGroupList($user) {
	echoShortList('<tr><th>组名</th><th>显示名</th><th>题目</th></tr>', queryUserExtgroups($user), function($grp) {
		$qp = queryUser($grp);
		$link = getUserLink($qp['username']);
		$name = $qp['email'];
		echo <<<HTML
<tr>
	<td>$link</td>
	<td>$name</td>
	<td><a href="/problems/group/{$grp}">题目</a></td>
</tr>
HTML;
	});
}

function echoGroupMemberList($grp) {
	echoShortList('<tr><th>用户名</th><th>管理</th></tr>', queryGroupMembers($grp),
		function($usern) use ($grp) {
			$username = $usern['username'];
			$user = queryUser($username);
			$link = getUserLink($username);
			if (hasGroupCtrlPermission($user, $grp)) $adminp = '<b>是</b>';
			else $adminp = '否';
			echo <<<HTML
<tr>
	<td>$link</td>
<td>$adminp</td>
</tr>
HTML;
		});
}

function echoGroupProblemList($grp) {
	echoShortList('<tr><th>题号</th><th>题名</th><th>控制</th><th>压缩包大小</th></tr>', queryGroupProblems($grp),
		function($pid) use ($grp) {
			$problem = queryProblemBrief($pid);
			$pid = $pid;
			$title = $problem['title'];
			if ($problem['ctrl'] && $problem['ctrl'] == $grp['username']) $adminp = '<b>是</b>';
			else $adminp = '否';
			$size = printSize(queryProblemSize($pid));
			echo <<<HTML
<tr><td>$pid</td>
<td><a href="/problem/{$pid}">$title</a></td>
<td>$adminp</td>
<td>$size</td></tr>
HTML;
		});
}

function echoGroupProblemSizeList($grp) {
	echoShortList('<tr><th>题号</th><th>题名</th><th>压缩包大小</th></tr>', queryGroupCtrlProblems($grp),
		function($pid) {
			$problem = queryProblemBrief($pid);
			$pid = $pid;
			$title = $problem['title'];
			$size = printSize(queryProblemSize($pid));
			echo <<<HTML
<tr><td>$pid</td>
<td><a href="/problem/{$pid}">$title</a></td>
<td>$size</td></tr>
HTML;
		});
}
function echoControlGroupList($user) {
	echoShortList('<tr><th>组名</th><th>显示名</th><th>管理</th></tr>', queryUserCtrlgroups($user), function($grp) {
		$qp = queryUser($grp);
		$link = getUserLink($qp['username']);
		$name = $qp['email'];
		echo <<<HTML
<tr>
	<td>$link</td>
	<td>$name</td>
	<td><a href="/group-manage/{$grp}">管理</a></td>
</tr>
HTML;
	});
}

function echoGroupsList() {
	$header_row = '<tr>';
	$col_names = ['username', 'privs'];
	$header_row .= '<th>组名</th>';
	$header_row .= '<th>组权限</th>';
	$header_row .= '</tr>';
	$table_name = 'user_info';
	echoLongTable($col_names, $table_name, "username like 'group_%'", '', $header_row,
		function ($group) {
			$link = getUserLink($group['username']);
			$privs = $group['privs'];
			echo <<<HTML
<tr>
	<td>
		{$link}
	</td>
	<td>
		{$privs_pretty}
	</td>
</tr>
HTML;
		}, []);
}

function echoCertsList($user) {
	echoShortList('<tr><th>勋章</th><th>展示</th></tr>', explode(',', $user['certslist']), function($certs) {
		$col = explode('#', $certs)[0];
		$text = explode('#', $certs)[1];
		$cert = '<span class="uoj-certs uoj-certs-' . $col . '">' . $text . '</span>';
		echo <<<HTML
<tr>
	<td>$cert</td>
	<td>
		<form action="/certs-manage" method="post">
			<input type="hidden" name="certs" value="$certs">
			<button type="submit" class="btn btn-primary">展示这个</button>
		</form>
	</td>
</tr>
HTML;
	});
}

function echoPastesList() {
	$header_row = '<tr>';
	$col_names = ['`index`','creator','created_at'];
	$header_row .= '<th>ID</th>';
	$header_row .= '<th>'.UOJLocale::get("problems::submitter").'</th>';
	$header_row .= '<th>'.UOJLocale::get('problems::submit time').'</th>';
	$header_row .= '<th> 操作 </th>';
	$header_row .= '</tr>';
	$table_name = 'pastes';
	echoLongTable($col_names, $table_name, "1", 'order by created_at desc', $header_row,
		function($paste) {
			$user = getUserLink($paste['creator']);
			$token = HTML::hiddenToken();
			echo <<<HTML
<tr>
	<td>
		<a href="/pastes/{$paste['index']}">{$paste['index']}</a>
	</td>
	<td>
		{$user}
	</td>
	<td>
		{$paste['created_at']}
	</td>
	<td>
		<form action="/super-manage/paste" method="post" class="form-horizontal">
		{$token}
		<input type="text" class="form-control" name="paste_deleter_name" id="input-paste_deleter_name" value="{$paste['index']}" style="display: none;">
		<button type="submit" name="submit-paste_deleter" value="paste_deleter" class="btn btn-sm btn-danger" style="margin: 0">删除</button>
		</form>
	</td>
</tr>
HTML;
		}, []);
}

function echoPasteContent($paste) {
	$zip_file = new ZipArchive();
	$submission_content = json_decode($paste['content'], true);
	$zip_file->open(UOJContext::storagePath().$submission_content['file_name']);

	$config = array();
	foreach ($submission_content['config'] as $config_key => $config_val) {
		$config[$config_val[0]] = $config_val[1];
	}

	$file_content = $zip_file->getFromName("paste.code");
	$file_content = uojTextEncode($file_content, array('allow_CR' => true, 'html_escape' => true));
	$file_language = htmlspecialchars($config["paste_language"]);
	$footer_text = UOJLocale::get('problems::source code').', '.UOJLocale::get('problems::language').': '.$file_language;
	$footer_text .= ", ".UOJLocale::get("problems::submitter") . <<<HTML
: <a href="/user/profile/${paste['creator']}">${paste['creator']}</a>
HTML;
	$footer_text .= ", ".UOJLocale::get("problems::submit time").": ".$paste['created_at'];

	switch ($file_language) {
		case 'C++14':
		case 'C++17':
		case 'C++17ubsan':
			$sh_class = 'sh_cpp';
			break;
		case 'Python2':
		case 'Python3':
			$sh_class = 'sh_python';
			break;
		case 'Java8':
		case 'Java11':
			$sh_class = 'sh_java';
			break;
		case 'C':
			$sh_class = 'sh_c';
			break;
		case 'Pascal':
			$sh_class = 'sh_pascal';
			break;
		default:
			$sh_class = '';
			break;
	}
	echo '<div class="card border-info mb-3">';
	echo '<div class="card-header bg-info">';
	echo '<h4 class="card-title">Paste!</h4>';
	echo '</div>';
	echo '<div class="card-body">';
	echo '<pre><code class="'.$sh_class.'">'.$file_content."\n".'</code></pre>';
	echo '</div>';
	echo '<div class="card-footer">'.$footer_text.'</div>';
	echo '</div>';

	$zip_file->close();
}

function echoSubmissionContent($submission, $requirement) {
	$zip_file = new ZipArchive();
	$submission_content = json_decode($submission['content'], true);
	$zip_file->open(UOJContext::storagePath().$submission_content['file_name']);
	
	$config = array();
	foreach ($submission_content['config'] as $config_key => $config_val) {
		$config[$config_val[0]] = $config_val[1];
	}
	
	foreach ($requirement as $req) {
		if ($req['type'] == "source code") {
			$file_content = $zip_file->getFromName("{$req['name']}.code");
			$file_content = uojTextEncode($file_content, array('allow_CR' => true, 'html_escape' => true));
			$file_language = htmlspecialchars($config["{$req['name']}_language"]);
			$footer_text = UOJLocale::get('problems::source code').', '.UOJLocale::get('problems::language').': '.$file_language;
			switch ($file_language) {
				case 'C++14':
				case 'C++17':
				case 'C++17ubsan':
					$sh_class = 'sh_cpp';
					break;
				case 'Python2':
				case 'Python3':
					$sh_class = 'sh_python';
					break;
				case 'Java8':
				case 'Java11':
					$sh_class = 'sh_java';
					break;
				case 'C':
					$sh_class = 'sh_c';
					break;
				case 'Pascal':
					$sh_class = 'sh_pascal';
					break;
				default:
					$sh_class = '';
					break;
			}
			echo '<div class="card border-info mb-3">';
			echo '<div class="card-header bg-info">';
			echo '<h4 class="card-title">'.$req['name'].'</h4>';
			echo '</div>';
			echo '<div class="card-body">';
			echo '<pre><code class="'.$sh_class.'">'.$file_content."\n".'</code></pre>';
			echo '</div>';
			echo '<div class="card-footer">'.$footer_text.'</div>';
			echo '</div>';
		} elseif ($req['type'] == "text") {
			$file_content = $zip_file->getFromName("{$req['file_name']}", 504);
			$file_content = strOmit($file_content, 500);
			$file_content = uojTextEncode($file_content, array('allow_CR' => true, 'html_escape' => true));
			$footer_text = UOJLocale::get('problems::text file');
			echo '<div class="card border-info mb-3">';
			echo '<div class="card-header bg-info">';
			echo '<h4 class="card-title">'.$req['file_name'].'</h4>';
			echo '</div>';
			echo '<div class="card-body">';
			echo '<pre>'."\n".$file_content."\n".'</pre>';
			echo '</div>';
			echo '<div class="card-footer">'.$footer_text.'</div>';
			echo '</div>';
		}
	}

	$zip_file->close();
}


class JudgementDetailsPrinter {
	private $name;
	private $styler;
	private $dom;
	
	private $subtask_num;

	private function _print_c($node) {
		foreach ($node->childNodes as $child) {
			if ($child->nodeName == '#text') {
				echo htmlspecialchars($child->nodeValue);
			} else {
				$this->_print($child);
			}
		}
	}
	private function _print($node) {
		if ($node->nodeName == 'error') {
			echo "<pre>\n";
			$this->_print_c($node);
			echo "\n</pre>";
		} elseif ($node->nodeName == 'tests') {
			echo '<div id="', $this->name, '_details_accordion">';
			if ($this->styler->show_small_tip) {
				echo '<div class="text-right text-muted">', '小提示：点击横条可展开更详细的信息', '</div>';
			} elseif ($this->styler->ioi_contest_is_running) {
				echo '<div class="text-right text-muted">', 'IOI 赛制比赛中不支持显示详细信息', '</div>';
			}
			$this->_print_c($node);
			echo '</div>';
		} elseif ($node->nodeName == 'subtask') {
			$subtask_num = $node->getAttribute('num');
			$subtask_score = $node->getAttribute('score');
			$subtask_info = $node->getAttribute('info');
			
			echo '<div class="card ', $this->styler->getTestInfoClass($subtask_info), ' mb-3">';
			
			$accordion_parent = "{$this->name}_details_accordion";
			$accordion_collapse =  "{$accordion_parent}_collapse_subtask_{$subtask_num}";
			$accordion_collapse_accordion =  "{$accordion_collapse}_accordion";
			echo 	'<div class="card-header" data-toggle="collapse" data-parent="#', $accordion_parent, '" data-target="#', $accordion_collapse, '">';
			
			echo 		'<div class="row">';
			echo 			'<div class="col-sm-4">';
			echo 				'<h3 class="card-title">', 'Subtask #', $subtask_num, ': ', '</h3>';
			echo 			'</div>';
			
			if ($this->styler->show_score) {
				echo 		'<div class="col-sm-4">';
				echo 			'得分：', $subtask_score;
				echo 		'</div>';
				echo 		'<div class="col-sm-4">';
				echo 			htmlspecialchars($subtask_info);
				echo 		'</div>';
			} else {
				echo 		'<div class="col-sm-8">';
				echo 			htmlspecialchars($subtask_info);
				echo 		'</div>';
			}

			echo 		'</div>';
			echo 	'</div>';
			
			echo 	'<div id="', $accordion_collapse, '" class="card-collapse collapse">';
			echo 		'<div class="card-body">';

			echo 			'<div id="', $accordion_collapse_accordion, '">';
			$this->subtask_num = $subtask_num;
			$this->_print_c($node);
			$this->subtask_num = null;
			echo 			'</div>';

			echo 		'</div>';
			echo 	'</div>';
			echo '</div>';
		} elseif ($node->nodeName == 'test') {
			$test_info = $node->getAttribute('info');
			$test_num = $node->getAttribute('num');
			$test_score = $node->getAttribute('score');
			$test_time = $node->getAttribute('time');
			$test_memory = $node->getAttribute('memory');

			echo '<div class="card ', $this->styler->getTestInfoClass($test_info), ' mb-3">';
			
			$accordion_parent = "{$this->name}_details_accordion";
			if ($this->subtask_num != null) {
				$accordion_parent .= "_collapse_subtask_{$this->subtask_num}_accordion";
			}
			$accordion_collapse = "{$accordion_parent}_collapse_test_{$test_num}";
			if (!$this->styler->shouldFadeDetails($test_info)) {
				echo '<div class="card-header" data-toggle="collapse" data-parent="#', $accordion_parent, '" data-target="#', $accordion_collapse, '">';
			} else {
				echo '<div class="card-header">';
			}
			echo '<div class="row">';
			echo '<div class="col-sm-4">';
			if ($test_num > 0) {
				echo '<h4 class="card-title">', 'Test #', $test_num, ': ', '</h4>';
			} else {
				echo '<h4 class="card-title">', 'Extra Test:', '</h4>';
			}
			echo '</div>';
				
			if ($this->styler->show_score) {
				echo '<div class="col-sm-4">';
				echo '得分：', $test_score;
				echo '</div>';
				echo '<div class="col-sm-4">';
				echo htmlspecialchars($test_info);
				echo '</div>';
			} else {
				echo '<div class="col-sm-8">';
				echo htmlspecialchars($test_info);
				echo '</div>';
			}
				
			echo '<div class="col-sm-4">';
			if ($test_time >= 0) {
				echo '时间：', $test_time, 'ms';
			}
			echo '</div>';

			echo '<div class="col-sm-4">';
			if ($test_memory >= 0) {
				echo '内存：', $test_memory, 'kb';
			}
			echo '</div>';

			echo '</div>';
			echo '</div>';

			if (!$this->styler->shouldFadeDetails($test_info)) {
				$accordion_collapse_class = 'card-collapse collapse';
				if ($this->styler->collapse_in) {
					$accordion_collapse_class .= ' in';
				}
				echo '<div id="', $accordion_collapse, '" class="', $accordion_collapse_class, '">';
				echo '<div class="card-body">';

				$this->_print_c($node);

				echo '</div>';
				echo '</div>';
			}

			echo '</div>';
		} elseif ($node->nodeName == 'custom-test') {
			$test_info = $node->getAttribute('info');
			$test_time = $node->getAttribute('time');
			$test_memory = $node->getAttribute('memory');

			echo '<div class="card ', $this->styler->getTestInfoClass($test_info), ' mb-3">';
			
			$accordion_parent = "{$this->name}_details_accordion";
			$accordion_collapse = "{$accordion_parent}_collapse_custom_test";
			if (!$this->styler->shouldFadeDetails($test_info)) {
				echo '<div class="card-header" data-toggle="collapse" data-parent="#', $accordion_parent, '" data-target="#', $accordion_collapse, '">';
			} else {
				echo '<div class="card-header">';
			}
			echo '<div class="row">';
			echo '<div class="col-sm-2">';
			echo '<h4 class="card-title">', '自定义测试：', '</h4>';
			echo '</div>';
				
			echo '<div class="col-sm-4">';
			echo htmlspecialchars($test_info);
			echo '</div>';
				
			echo '<div class="col-sm-3">';
			if ($test_time >= 0) {
				echo '时间：', $test_time, 'ms';
			}
			echo '</div>';

			echo '<div class="col-sm-3">';
			if ($test_memory >= 0) {
				echo '空间：', $test_memory, 'kb';
			}
			echo '</div>';

			echo '</div>';
			echo '</div>';

			if (!$this->styler->shouldFadeDetails($test_info)) {
				$accordion_collapse_class = 'card-collapse collapse';
				if ($this->styler->collapse_in) {
					$accordion_collapse_class .= ' in';
				}
				echo '<div id="', $accordion_collapse, '" class="', $accordion_collapse_class, '">';
				echo '<div class="card-body">';

				$this->_print_c($node);

				echo '</div>';
				echo '</div>';

				echo '</div>';
			}
		} elseif ($node->nodeName == 'in') {
			echo "<h4>标准输入：</h4><pre>\n";
			$this->_print_c($node);
			echo "\n</pre>";
		} elseif ($node->nodeName == 'out') {
			echo "<h4>标准输出：</h4><pre>\n";
			$this->_print_c($node);
			echo "\n</pre>";
		} elseif ($node->nodeName == 'res') {
			echo "<h4>检验结果：</h4><pre>\n";
			$this->_print_c($node);
			echo "\n</pre>";
		} else {
			echo '<', $node->nodeName;
			foreach ($node->attributes as $attr) {
				echo ' ', $attr->name, '="', htmlspecialchars($attr->value), '"';
			}
			echo '>';
			$this->_print_c($node);
			echo '</', $node->nodeName, '>';
		}
	}

	public function __construct($details, $styler, $name) {
		$this->name = $name;
		$this->styler = $styler;
		$this->details = $details;
		$this->dom = new DOMDocument();
		if (!$this->dom->loadXML($this->details)) {
			throw new Exception("XML syntax error");
		}
		$this->details = '';
	}
	public function printHTML() {
		$this->subtask_num = null;
		$this->_print($this->dom->documentElement);
	}
}

function echoJudgementDetails($raw_details, $styler, $name) {
	try {
		$printer = new JudgementDetailsPrinter($raw_details, $styler, $name);
		$printer->printHTML();
	} catch (Exception $e) {
		echo 'Failed to show details';
	}
}

class SubmissionDetailsStyler {
	public $show_score = true;
	public $show_small_tip = true;
	public $collapse_in = false;
	public $fade_all_details = false;
	public function getTestInfoClass($info) {
		if ($info == 'Accepted' || $info == 'Extra Test Passed') {
			return 'card-uoj-accepted';
		} elseif ($info == 'Time Limit Exceeded') {
			return 'card-uoj-tle';
		} elseif ($info == 'Acceptable Answer') {
			return 'card-uoj-acceptable-answer';
		} else {
			return 'card-uoj-wrong';
		}
	}
	public function shouldFadeDetails($info) {
		return $this->fade_all_details || $info == 'Extra Test Passed';
	}
}
class CustomTestSubmissionDetailsStyler {
	public $show_score = true;
	public $show_small_tip = false;
	public $collapse_in = true;
	public $fade_all_details = false;
	public $ioi_contest_is_running = false;
	public function getTestInfoClass($info) {
		if ($info == 'Success') {
			return 'card-uoj-accepted';
		} elseif ($info == 'Time Limit Exceeded') {
			return 'card-uoj-tle';
		} elseif ($info == 'Acceptable Answer') {
			return 'card-uoj-acceptable-answer';
		} else {
			return 'card-uoj-wrong';
		}
	}
	public function shouldFadeDetails($info) {
		return $this->fade_all_details;
	}
}
class HackDetailsStyler {
	public $show_score = false;
	public $show_small_tip = false;
	public $collapse_in = true;
	public $fade_all_details = false;
	public function getTestInfoClass($info) {
		if ($info == 'Accepted' || $info == 'Extra Test Passed') {
			return 'card-uoj-accepted';
		} elseif ($info == 'Time Limit Exceeded') {
			return 'card-uoj-tle';
		} elseif ($info == 'Acceptable Answer') {
			return 'card-uoj-acceptable-answer';
		} else {
			return 'card-uoj-wrong';
		}
	}
	public function shouldFadeDetails($info) {
		return $this->fade_all_details;
	}
}

function echoSubmissionDetails($submission_details, $name) {
	echoJudgementDetails($submission_details, new SubmissionDetailsStyler(), $name);
}
function echoCustomTestSubmissionDetails($submission_details, $name) {
	echoJudgementDetails($submission_details, new CustomTestSubmissionDetailsStyler(), $name);
}
function echoHackDetails($hack_details, $name) {
	echoJudgementDetails($hack_details, new HackDetailsStyler(), $name);
}

function echoHack($hack, $config, $user) {
	$problem = queryProblemBrief($hack['problem_id']);
	echo '<tr>';
	if (!isset($config['id_hidden'])) {
		echo '<td><a href="/hack/', $hack['id'], '">#', $hack['id'], '</a></td>';
	}
	if (!isset($config['submission_hidden'])) {
		echo '<td><a href="/submission/', $hack['submission_id'], '">#', $hack['submission_id'], '</a></td>';
	}
	if (!isset($config['problem_hidden'])) {
		if ($hack['contest_id']) {
			echo '<td>', getContestProblemLink($problem, $hack['contest_id'], '!id_and_title'), '</td>';
		} else {
			echo '<td>', getProblemLink($problem, '!id_and_title'), '</td>';
		}
	}
	if (!isset($config['hacker_hidden'])) {
		echo '<td>', getUserLink($hack['hacker']), '</td>';
	}
	if (!isset($config['owner_hidden'])) {
		echo '<td>', getUserLink($hack['owner']), '</td>';
	}
	if (!isset($config['result_hidden'])) {
		if ($hack['judge_time'] == null) {
			echo '<td><a href="/hack/', $hack['id'], '">Waiting</a></td>';
		} elseif ($hack['success'] == null) {
			echo '<td><a href="/hack/', $hack['id'], '">Judging</a></td>';
		} elseif ($hack['success']) {
			echo '<td><a href="/hack/', $hack['id'], '" class="uoj-status" data-success="1"><strong>Success!</strong></a></td>';
		} else {
			echo '<td><a href="/hack/', $hack['id'], '" class="uoj-status" data-success="0"><strong>Failed.</strong></a></td>';
		}
	} else {
		echo '<td>Hidden</td>';
	}
	if (!isset($config['submit_time_hidden'])) {
		echo '<td>', $hack['submit_time'], '</td>';
	}
	if (!isset($config['judge_time_hidden'])) {
		echo '<td>', $hack['judge_time'], '</td>';
	}
	echo '</tr>';
}
function echoHackListOnlyOne($hack, $config, $user) {
	echo '<div class="table-responsive shadow my-4">';
	echo '<table class="table table-bordered table-text-center">';
	echo '<thead>';
	echo '<tr>';
	if (!isset($config['id_hidden'])) {
		echo '<th>ID</th>';
	}
	if (!isset($config['submission_id_hidden'])) {
		echo '<th>'.UOJLocale::get('problems::submission id').'</th>';
	}
	if (!isset($config['problem_hidden'])) {
		echo '<th>'.UOJLocale::get('problems::problem').'</th>';
	}
	if (!isset($config['hacker_hidden'])) {
		echo '<th>'.UOJLocale::get('problems::hacker').'</th>';
	}
	if (!isset($config['owner_hidden'])) {
		echo '<th>'.UOJLocale::get('problems::owner').'</th>';
	}
	if (!isset($config['result_hidden'])) {
		echo '<th>'.UOJLocale::get('problems::result').'</th>';
	}
	if (!isset($config['submit_time_hidden'])) {
		echo '<th>'.UOJLocale::get('problems::submit time').'</th>';
	}
	if (!isset($config['judge_time_hidden'])) {
		echo '<th>'.UOJLocale::get('problems::judge time').'</th>';
	}
	echo '</tr>';
	echo '</thead>';
	echo '<tbody>';
	echoHack($hack, $config, $user);
	echo '</tbody>';
	echo '</table>';
	echo '</div>';
}
function echoHacksList($cond, $tail, $config, $user) {
	$header_row = '<tr>';
	$col_names = array();
	
	$col_names[] = 'id';
	$col_names[] = 'success';
	$col_names[] = 'judge_time';
	
	if (!isset($config['id_hidden'])) {
		$header_row .= '<th>ID</th>';
	}
	if (!isset($config['submission_id_hidden'])) {
		$header_row .= '<th>'.UOJLocale::get('problems::submission id').'</th>';
		$col_names[] = 'submission_id';
	}
	if (!isset($config['problem_hidden'])) {
		$header_row .= '<th>'.UOJLocale::get('problems::problem').'</th>';
		$col_names[] = 'problem_id';
	}
	if (!isset($config['hacker_hidden'])) {
		$header_row .= '<th>'.UOJLocale::get('problems::hacker').'</th>';
		$col_names[] = 'hacker';
	}
	if (!isset($config['owner_hidden'])) {
		$header_row .= '<th>'.UOJLocale::get('problems::owner').'</th>';
		$col_names[] = 'owner';
	}
	if (!isset($config['result_hidden'])) {
		$header_row .= '<th>'.UOJLocale::get('problems::result').'</th>';
	}
	if (!isset($config['submit_time_hidden'])) {
		$header_row .= '<th>'.UOJLocale::get('problems::submit time').'</th>';
		$col_names[] = 'submit_time';
	}
	if (!isset($config['judge_time_hidden'])) {
		$header_row .= '<th>'.UOJLocale::get('problems::judge time').'</th>';
	}
	$header_row .= '</tr>';

	if (!isSuperUser($user)) {
		if ($user != null) {
			$permission_cond = "is_hidden = false or (is_hidden = true and problem_id in (select problem_id from problems_permissions where username = '{$user['username']}'))";
		} else {
			$permission_cond = "is_hidden = false";
		}
		if ($cond !== '1') {
			$cond = "($cond) and ($permission_cond)";
		} else {
			$cond = $permission_cond;
		}
	}

	echoLongTable($col_names, 'hacks', $cond, $tail, $header_row,
		function($hacks) use ($config, $user) {
			echoHack($hacks, $config, $user);
		}, null);
}

function echoDatum($datum) {
	$pid = $datum['pid'];
	$title = queryProblemBrief($pid)['title'];

	echo '<tr>';
	echo '<td>' . $datum['id'] . '</td>';
	echo '<td>', getProblemLink(queryProblemBrief($pid), '!id_and_title'), '</td>';

	if ($datum['status'] == 'Done')
		echo '<td><a href="/datum/' . $datum['id'] . '" class="uoj-status" data-success="1"><strong>Done</strong></a></td>';
	else if ($datum['status'] == 'Failed')
		echo '<td><a href="/datum/' . $datum['id'] . '" class="uoj-status" data-success="0"><strong>Failed</strong></a></td>';
	else	echo '<td><a href="/datum/' . $datum['id'] . '">' . $datum['status'] . '</a></td>';
	
	echo '<td>' . $datum['request_time'] . '</td>';
	echo '<td>' . $datum['finish_time'] . '</td>';
	echo '<td>' . $datum['timelimit'] . ' s</td>';
	echo '<td>' . $datum['memlimit'] . ' MB</td>';
	echo '</tr>';
}

function echoDatumlistOnlyOne($datum) {
	$header_row = '<tr><th>ID</th><th>题目</th><th>状态</th><th>请求时间</th><th>完成时间</th><th>时间限制</th><th>空间限制</th></tr>';
	echo '<div class="table-responsive shadow my-4">';
	echo '<table class="table table-bordered table-text-center">';
	echo '<thead>';
	echo $header_row;
	echo '</thead>';
	echo '<tbody>';
	echoDatum($datum);
	echo '</tbody>';
	echo '</table></div>';
}

function echoDatumList() {
	$col_names = array('id', 'pid', 'request_time', 'status', 'finish_time', 'timelimit', 'memlimit');
	$header_row = '<tr><th>ID</th><th>题目</th><th>状态</th><th>请求时间</th><th>完成时间</th><th>时间限制</th><th>空间限制</th></tr>';
	echoLongTable($col_names, 'datum_requests', '1', '', $header_row,
		function($datum) { echoDatum($datum); }, null);
}

function getBlogPreview($str) {
	return '';
}

function echoBlogCard($blog) {
	if ($blog == null)
		return;
	$bloghref = "/blogs/" . $blog['id'];
	$blogtitle = $blog['title'];
	$poster = queryUser($blog['poster']);
	$userlink = getUserLink($blog['poster']);
	$posttime = $blog['post_time'];
	$usermotto = $poster['motto'];
	$zanblock = getClickZanBlock('B', $blog['id'], $blog['zan']);
	$avatar = "https://q.qlogo.cn/g?b=qq&nk=" . $poster['qq'] . "&s=100";

	error_log($blog);
	error_log($poster);
	error_log($poster['qq']);
	error_log("FACK");

	return <<<EOF
        <div class="col-12 mb-3">
                <div class="card wyoj-blog-card border-0 shadow-sm">
                        <div class="card-body p-3">
                                <a href="$bloghref" class="text-decoration-none text-dark">
                                        <h5 class="mb-3 wyoj-blog-title">$blogtitle</h5>
                                </a>
                                <div class="d-flex align-items-center justify-content-between">
                                        <div class="d-flex align-items-center" style="min-width:0;">
                                                <img class="uoj-avatar rounded-circle flex-shrink-0 mr-2"
                                                     style="width:28px;height:28px;object-fit:cover;"
                                                     src="$avatar" alt="...">
                                                <span class="text-truncate">$userlink</span>
                                                <span class="text-muted ml-2 text-nowrap" style="font-size:0.85rem;">$posttime</span>
                                                <span class="ml-3 text-truncate" style="font-size:1rem;font-family:'SimSun','宋体','Songti SC','STSong',serif;">$usermotto</span>
                                        </div>
                                        <div class="flex-shrink-0 ml-2">$zanblock</div>
                                </div>
                        </div>
                </div>
        </div>
EOF;
}


function echoRecommendProblem($pid, $link, $name, $descr) {
	return <<<EOF
	<div class="col-md-3 mb-4">
		<div class="card h-100 p-3 text-center">
			<a class="mb-2" href="$link"><h4>$pid</h4></a>
			<h4 class="mb-2">$name</h4>
			<span class="text-bottom">$descr</span>
		</div>
	</div>
EOF;
}

function echoBlog($blog, $config = array()) {
	$default_config = array(
		'blog' => $blog,
		'show_title_only' => false,
		'show_content_only' => false,
		'is_preview' => false,
		'outside_blog_domain' => false,
	);
	foreach ($default_config as $key => $val) {
		if (!isset($config[$key])) {
			$config[$key] = $val;
		}
	}
	uojIncludeView('blog-preview', $config);
}
function echoBlogTag($tag) {
	echo '<a class="uoj-blog-tag"><span class="badge badge-pill badge-secondary">', HTML::escape($tag), '</span></a>';
}

function echoUOJPageHeader($page_title, $extra_config = array()) {
	global $REQUIRE_LIB;
	$config = UOJContext::pageConfig();
	$config['REQUIRE_LIB'] = $REQUIRE_LIB;
	$config['PageTitle'] = $page_title;
	$config = array_merge($config, $extra_config);
	uojIncludeView('page-header', $config);
}
function echoUOJPageFooter($config = array()) {
	uojIncludeView('page-footer', $config);
}

function getAvatar($user) {
	return '<img class="media-object img-rounded" height="50" width="50" src="' . HTML::avatar_addr($user, 50) . '">';
}

function echoRanklist($config = array()) {
	$header_row = '';
	$header_row .= '<tr>';
	$header_row .= '<th style="width: 5em;">#</th>';
	$header_row .= '<th style="width: 14em";>'.'头像'.'</th>';
	$header_row .= '<th style="width: 14em;">'.UOJLocale::get('username').'</th>';
	$header_row .= '<th style="width: 50em;">'.UOJLocale::get('motto').'</th>';
	$header_row .= '<th style="width: 5em;">'.UOJLocale::get('rating').'</th>';
	$header_row .= '</tr>';
	
	$users = array();
	$relcnt = 0;
	$print_row = function($user, $now_cnt) use (&$users, &$relcnt) {
		#if (!$users) {
			$rank = DB::selectCount("select count(*) from user_info where rating > {$user['rating']}") + 1;
#		} elseif ($user['rating'] == $users[count($users) - 1]['rating']) {
#			$rank = $users[count($users) - 1]['rank'];
#		} else {
#			$rank = $now_cnt;
#		}
		
		$user['rank'] = $rank;
		$relcnt++;
		
		echo '<tr>';
		echo '<td>' . $user['rank'] . ' (' . $relcnt . ')</td>';
		echo '<td>' . getAvatar($user) . '</td>';
		echo '<td>' . getUserLink($user['username']) . '</td>';
		echo '<td>' . HTML::escape($user['motto']) . '</td>';
		echo '<td>' . $user['rating'] . '</td>';
		echo '</tr>';
		
		$users[] = $user;
	};
	$col_names = array('username', 'email', 'qq', 'rating', 'motto');
	$tail = 'inner join contests_registrants c on user_info.username = c.username inner join contests s on s.id = c.contest_id where datediff(now(), s.start_time) <= 180 group by c.username having cnt >= 3 order by rating desc, username asc';
	#	$tail = 'order by rating desc, username asc';
	#
	$config['raw_sql'] = 'select u.username, u.email, u.rating, u.rating_rd, u.rating_vol, u.motto, u.qq, count(*) cnt from user_info u inner join contests_registrants c on u.username = c.username inner join contests s on s.id = c.contest_id where datediff(now(), s.start_time) <= 180 group by c.username having cnt >= 3 order by rating desc, username asc';
	
	if (isset($config['top10'])) {
		$tail .= ' limit 10';
	}
	
	$config['get_row_index'] = '';
	echoLongTable($col_names, 'user_info', '1', $tail, $header_row, $print_row, $config);
}