$val) {
if (!isset($config[$key])) {
$config[$key] = $val;
} elseif (is_array($config[$key])) {
mergeConfig($config[$key], $val);
}
}
}
function strStartWith($str, $pre) {
return substr($str, 0, strlen($pre)) === $pre;
}
function strEndWith($str, $suf) {
return substr($str, -strlen($suf)) === $suf;
}
function strOmit($str, $len) {
if (strlen($str) <= $len + 3) {
return $str;
} else {
return substr($str, 0, $len) . '...';
}
}
function uojTextEncode($str, $config = array()) {
mergeConfig($config, [
'allow_CR' => false,
'html_escape' => false
]);
$allow = array();
for ($c = 32; $c <= 126; $c++) {
$allow[chr($c)] = true;
}
$allow["\n"] = true;
$allow[" "] = true;
$allow["\t"] = true;
if ($config['allow_CR']) {
$allow["\r"] = true;
}
$len = strlen($str);
$ok = true;
for ($i = 0; $i < $len; $i++) {
$c = $str[$i];
if (!isset($allow[$c])) {
$ok = false;
}
}
if ($ok && mb_check_encoding($str, 'utf-8')) {
if (!$config['html_escape']) {
return $str;
} else {
return HTML::escape($str);
}
} else {
$len = strlen($str);
$res = '';
$i = 0;
while ($i < $len) {
$c = $str[$i];
if (ord($c) < 128) {
if (isset($allow[$c])) {
if ($config['html_escape']) {
if ($c == '&') {
$res .= '&';
} elseif ($c == '"') {
$res .= '"';
} elseif ($c == '<') {
$res .= '<';
} elseif ($c == '>') {
$res .= '>';
} else {
$res .= $c;
}
} else {
$res .= $c;
}
} else {
$res .= '\x' . bin2hex($c) . '';
}
$i++;
} else {
$ok = false;
$cur = $c;
for ($j = $i + 1; $j < $i + 4 && $j < $len; $j++) {
$cur .= $str[$j];
if (mb_check_encoding($cur, 'utf-8')) {
$ok = true;
break;
}
}
if ($ok) {
$res .= $cur;
$i = $j + 1;
} else {
$res .= '\x' . bin2hex($c) . '';
$i++;
}
}
}
return $res;
}
}
function base64url_encode($data) {
return rtrim(strtr(base64_encode($data), '+/', '-_'), '=');
}
function base64url_decode($data) {
return base64_decode(str_pad(strtr($data, '-_', '+/'), strlen($data) % 4, '=', STR_PAD_RIGHT));
}
function blog_name_encode($name) {
$name = str_replace('-', '_', $name);
if (!strStartWith($name, '_') && !strEndWith($name, '_')) {
$name = str_replace('_', '-', $name);
}
$name = strtolower($name);
return $name;
}
function blog_name_decode($name) {
$name = str_replace('-', '_', $name);
$name = strtolower($name);
return $name;
}
function isProblemUploader($user) {
if ($user == null) {
return false;
}
$usertype = explode(',', $user['usertype']);
return in_array('problem_uploader', $usertype);
}
function isProblemManager($user) {
if ($user == null) {
return false;
}
$usertype = explode(',', $user['usertype']);
return in_array('problem_manager', $usertype);
}
function isSuperUser($user) {
return $user != null && $user['usergroup'] == 'S';
}
function getProblemExtraConfig($problem) {
$extra_config = json_decode($problem['extra_config'], true);
$default_extra_config = array(
'view_content_type' => 'ALL',
'view_all_details_type' => 'ALL',
'view_details_type' => 'ALL'
);
mergeConfig($extra_config, $default_extra_config);
return $extra_config;
}
function getProblemSubmissionRequirement($problem) {
return json_decode($problem['submission_requirement'], true);
}
function getProblemCustomTestRequirement($problem) {
$extra_config = json_decode($problem['extra_config'], true);
if (isset($extra_config['custom_test_requirement'])) {
return $extra_config['custom_test_requirement'];
} else {
$answer = array(
'name' => 'answer',
'type' => 'source code',
'file_name' => 'answer.code'
);
foreach (getProblemSubmissionRequirement($problem) as $req) {
if ($req['name'] == 'answer' && $req['type'] == 'source code' && isset($req['languages'])) {
$answer['languages'] = $req['languages'];
}
}
return array(
$answer,
array(
'name' => 'input',
'type' => 'text',
'file_name' => 'input.txt'
)
);
}
}
function sendSystemMsg($username, $title, $content) {
$content = DB::escape($content);
$title = DB::escape($title);
DB::insert("insert into user_system_msg (receiver, title, content, send_time) values ('$username', '$title', '$content', now())");
}