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feat(problem/remote): codeforces::gym

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This commit is contained in:
Baoshuo Ren 2023-01-20 17:13:39 +08:00
parent 6407895ae2
commit 2556dd7819
Signed by: baoshuo
GPG Key ID: 00CB9680AB29F51A
3 changed files with 56 additions and 19 deletions
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1
web/app/controllers/new_remote_problem.php
View File

@ -107,6 +107,7 @@ $new_remote_problem_form->runAtServer();
<p>目前支持导入以下题库的题目作为远端评测题：</p>
<ul class="mb-3">
<li>Codeforces</li>
<li>Codeforces::Gym（题号前加 <code>GYM</code>）</li>
</ul>
</li>
<li>在导入题目前请先搜索题库中是否已经存在相应题目，避免重复添加。</li>

2
web/app/libs/uoj-validate-lib.php
View File

@ -77,5 +77,5 @@ function is_short_string($str) {
}
function validateCodeforcesProblemId($str) {
return preg_match('/[1-9][0-9]{0,5}[A-Z][1-9]?/', $str) !== true;
return preg_match('/(|GYM)[1-9][0-9]{0,5}[A-Z][1-9]?/', $str) !== true;
}

72
web/app/models/UOJRemoteProblem.php
View File

@ -16,28 +16,16 @@ class UOJRemoteProblem {
];
static function getCodeforcesProblemUrl($id) {
if (str_starts_with($id, 'GYM')) {
return static::$providers['codeforces']['url'] . '/gym/' . preg_replace_callback('/GYM([1-9][0-9]{0,5})([A-Z][1-9]?)/', fn ($matches) => $matches[1] . '/problem/' . $matches[2], $id);
}
return static::$providers['codeforces']['url'] . '/problemset/problem/' . preg_replace_callback('/([1-9][0-9]{0,5})([A-Z][1-9]?)/', fn ($matches) => $matches[1] . '/' . $matches[2], $id);
}
// 传入 ID 需确保有效
static function getCodeforcesProblemBasicInfo($id) {
$curl = new Curl();
$curl->setUserAgent('Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.0.0 Safari/537.36 S2OJ/3.1.0');
static function getCodeforcesProblemBasicInfoFromHtml($id, $html) {
$remote_provider = static::$providers['codeforces'];
$html = retry_loop(function () use ($curl, $id) {
$curl->get(static::getCodeforcesProblemUrl($id));
if ($curl->error) {
return false;
}
return $curl->response;
});
if (!$html) return null;
$html = preg_replace('/\$\$\$/', '$', $html);
$dom = new \IvoPetkov\HTML5DOMDocument();
$dom->loadHTML($html);
@ -51,8 +39,9 @@ class UOJRemoteProblem {
}
$statement_dom = $dom->querySelector('.problem-statement');
$title_prefix = str_starts_with($id, 'GYM') ? '' : 'CF';
$title = explode('. ', trim($statement_dom->querySelector('.title')->innerHTML))[1];
$title = "【{$remote_provider['short_name']}{$id}】{$title}";
$title = "【{$title_prefix}{$id}】{$title}";
$time_limit = intval(substr($statement_dom->querySelector('.time-limit')->innerHTML, 53));
$memory_limit = intval(substr($statement_dom->querySelector('.memory-limit')->innerHTML, 55));
$difficulty = -1;
@ -120,6 +109,7 @@ class UOJRemoteProblem {
}
return [
'type' => 'html',
'title' => $title,
'time_limit' => $time_limit,
'memory_limit' => $memory_limit,
@ -128,6 +118,52 @@ class UOJRemoteProblem {
];
}
// 传入 ID 需确保有效
static function getCodeforcesProblemBasicInfo($id) {
$curl = new Curl();
$curl->setUserAgent('Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.0.0 Safari/537.36 S2OJ/3.1.0');
$res = retry_loop(function () use (&$curl, $id) {
$curl->get(static::getCodeforcesProblemUrl($id));
if ($curl->error) {
return false;
}
return [
'content-type' => $curl->response_headers['Content-Type'],
'response' => $curl->response,
];
});
if (!$res) return null;
if (str_starts_with($res['content-type'], 'text/html')) {
return static::getCodeforcesProblemBasicInfoFromHtml($id, $res['response']);
} else if (str_starts_with($res['content-type'], 'application/pdf')) {
$title_prefix = str_starts_with($id, 'GYM') ? '' : 'CF';
$title = "【{$title_prefix}{$id}】{$title_prefix}{$id}";
return [
'type' => 'pdf',
'title' => $title,
'time_limit' => null,
'memory_limit' => null,
'difficulty' => -1,
'statement' => HTML::tag('h3', [], '提示') .
HTML::tag(
'p',
[],
'本题题面为 PDF 题面，请' .
HTML::tag('a', ['href' => static::getCodeforcesProblemUrl($id), 'target' => '_blank'], '点此') .
'以查看题面。'
),
];
} else {
return null;
}
}
public static function getProblemRemoteUrl($oj, $id) {
if ($oj === 'codeforces') {
return static::getCodeforcesProblemUrl($id);