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366 lines
11 KiB
366 lines
11 KiB
/* |
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* This file is part of SYZOJ. |
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* |
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* Copyright (c) 2016 Menci <huanghaorui301@gmail.com> |
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* |
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* SYZOJ is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Affero General Public License as |
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* published by the Free Software Foundation, either version 3 of the |
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* License, or (at your option) any later version. |
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* |
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* SYZOJ is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Affero General Public License for more details. |
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* |
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* You should have received a copy of the GNU Affero General Public |
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* License along with SYZOJ. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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'use strict'; |
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Array.prototype.forEachAsync = Array.prototype.mapAsync = async function (fn) { |
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return Promise.all(this.map(fn)); |
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}; |
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Array.prototype.filterAsync = async function (fn) { |
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let a = await this.mapAsync(fn); |
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return this.filter((x, i) => a[i]); |
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}; |
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global.ErrorMessage = class ErrorMessage { |
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constructor(message, nextUrls, details) { |
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this.message = message; |
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this.nextUrls = nextUrls || {}; |
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this.details = details; |
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} |
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}; |
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let Promise = require('bluebird'); |
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let path = require('path'); |
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let fs = Promise.promisifyAll(require('fs-extra')); |
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let util = require('util'); |
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let renderer = require('moemark-renderer'); |
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let moment = require('moment'); |
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let url = require('url'); |
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let querystring = require('querystring'); |
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let pygmentize = require('pygmentize-bundled-cached'); |
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let gravatar = require('gravatar'); |
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let filesize = require('file-size'); |
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let AsyncLock = require('async-lock'); |
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function escapeHTML(s) { |
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// Code from http://stackoverflow.com/questions/5251520/how-do-i-escape-some-html-in-javascript/5251551 |
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return s.replace(/[^0-9A-Za-z ]/g, (c) => { |
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return "&#" + c.charCodeAt(0) + ";"; |
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}); |
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} |
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function highlightPygmentize(code, lang, cb) { |
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pygmentize({ |
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lang: lang, |
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format: 'html', |
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options: { |
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nowrap: true, |
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classprefix: 'pl-' |
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} |
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}, code, (err, res) => { |
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if (err || res.toString() === 'undefined') { |
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cb(escapeHTML(code)); |
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} else { |
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cb(res); |
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} |
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}); |
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} |
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renderer.config.highlight = highlightPygmentize; |
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module.exports = { |
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resolvePath(s) { |
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let a = Array.from(arguments); |
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a.unshift(__dirname); |
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return path.resolve.apply(null, a); |
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}, |
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markdown(obj, keys, noReplaceUI) { |
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let XSS = require('xss'); |
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let CSSFilter = require('cssfilter'); |
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let whiteList = Object.assign({}, require('xss/lib/default').whiteList); |
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delete whiteList.audio; |
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delete whiteList.video; |
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for (let tag in whiteList) whiteList[tag] = whiteList[tag].concat(['id', 'style', 'class']); |
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let xss = new XSS.FilterXSS({ |
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css: { |
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whiteList: Object.assign({}, require('cssfilter/lib/default').whiteList, { |
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'vertical-align': true, |
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top: true, |
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bottom: true, |
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left: true, |
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right: true |
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}) |
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}, |
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whiteList: whiteList, |
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stripIgnoreTag: true |
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}); |
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let replaceXSS = s => { |
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return xss.process(s); |
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}; |
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let replaceUI = s => { |
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if (noReplaceUI) return s; |
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s = s.split('<pre>').join('<div class="ui existing segment"><pre style="margin-top: 0; margin-bottom: 0; ">').split('</pre>').join('</pre></div>') |
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.split('<table>').join('<table class="ui table">') |
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.split('<blockquote>').join('<div class="ui message">').split('</blockquote>').join('</div>'); |
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let cheerio = require('cheerio'); |
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let $ = cheerio.load('<html><head></head><body></body></html>'); |
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let body = $('body'); |
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body.html(s); |
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let a = $('img:only-child'); |
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for (let img of Array.from(a)) { |
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if (!img.prev && !img.next) { |
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$(img).css('display', 'block'); |
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$(img).css('margin', '0 auto'); |
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} |
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} |
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return body.html(); |
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}; |
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return new Promise((resolve, reject) => { |
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if (!keys) { |
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if (!obj || !obj.trim()) resolve(""); |
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else renderer(obj, { mathjaxUseHtml: true }, s => { |
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resolve(replaceUI(replaceXSS(s))); |
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}); |
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} else { |
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let res = obj, cnt = keys.length; |
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for (let key of keys) { |
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renderer(res[key], { mathjaxUseHtml: true }, (s) => { |
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res[key] = replaceUI(replaceXSS(s)); |
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if (!--cnt) resolve(res); |
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}); |
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} |
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} |
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}); |
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}, |
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formatDate(ts, format) { |
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let m = moment(ts * 1000); |
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m.locale('eu'); |
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return m.format(format || 'L H:mm:ss'); |
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}, |
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formatTime(x) { |
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let sgn = x < 0 ? '-' : ''; |
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x = Math.abs(x); |
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function toStringWithPad(x) { |
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x = parseInt(x); |
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if (x < 10) return '0' + x.toString(); |
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else return x.toString(); |
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} |
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return sgn + util.format('%s:%s:%s', toStringWithPad(x / 3600), toStringWithPad(x / 60 % 60), toStringWithPad(x % 60)); |
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}, |
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formatSize(x) { |
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let res = filesize(x, { fixed: 1 }).calculate(); |
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if (res.result === parseInt(res.result)) res.fixed = res.result.toString(); |
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if (res.suffix.startsWith('Byte')) res.suffix = 'B'; |
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else res.suffix = res.suffix.replace('iB', ''); |
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return res.fixed + ' ' + res.suffix; |
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}, |
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parseDate(s) { |
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return parseInt(+new Date(s) / 1000); |
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}, |
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getCurrentDate() { |
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return parseInt(+new Date / 1000); |
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}, |
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makeUrl(req_params, form) { |
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let res = ''; |
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if (!req_params) res = '/'; |
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else if (req_params.originalUrl) { |
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let u = url.parse(req_params.originalUrl); |
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res = u.pathname; |
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} else { |
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if (!Array.isArray(req_params)) req_params = [req_params]; |
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for (let param of req_params) res += '/' + param; |
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} |
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let encoded = querystring.encode(form); |
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if (encoded) res += '?' + encoded; |
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return res; |
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}, |
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escapeHTML: escapeHTML, |
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highlight(code, lang) { |
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return new Promise((resolve, reject) => { |
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highlightPygmentize(code, lang, res => { |
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resolve(res); |
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}); |
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}); |
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}, |
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gravatar(email, size) { |
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return gravatar.url(email, { s: size, d: 'mm' }).replace('www', 'cn'); |
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}, |
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async parseTestdata(dir) { |
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if (!await syzoj.utils.isDir(dir)) return null; |
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try { |
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// Get list of *files* |
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let list = await (await fs.readdirAsync(dir)).filterAsync(async x => await syzoj.utils.isFile(path.join(dir, x))); |
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let res = []; |
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if (!list.includes('data_rule.txt')) { |
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res[0] = {}; |
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res[0].cases = []; |
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for (let file of list) { |
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let parsedName = path.parse(file); |
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if (parsedName.ext === '.in') { |
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if (list.includes(`${parsedName.name}.out`)) { |
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res[0].cases.push({ |
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input: file, |
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output: `${parsedName.name}.out` |
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}); |
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} |
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if (list.includes(`${parsedName.name}.ans`)) { |
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res[0].cases.push({ |
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input: file, |
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output: `${parsedName.name}.ans` |
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}); |
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} |
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} |
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} |
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res[0].type = 'sum'; |
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res[0].score = 100; |
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res[0].cases.sort((a, b) => { |
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function getLastInteger(s) { |
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let re = /(\d+)\D*$/; |
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let x = re.exec(s); |
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if (x) return parseInt(x[1]); |
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else return -1; |
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} |
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return getLastInteger(a.input) - getLastInteger(b.input); |
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}); |
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} else { |
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let lines = (await fs.readFileAsync(path.join(dir, 'data_rule.txt'))).toString().split('\r').join('').split('\n').filter(x => x.length !== 0); |
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if (lines.length < 3) throw '无效的数据配置文件（data_rule.txt）。'; |
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let input = lines[lines.length - 2]; |
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let output = lines[lines.length - 1]; |
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for (let s = 0; s < lines.length - 2; ++s) { |
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res[s] = {}; |
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res[s].cases = []; |
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let numbers = lines[s].split(' ').filter(x => x); |
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if (numbers[0].includes(':')) { |
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let tokens = numbers[0].split(':'); |
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res[s].type = tokens[0] || 'sum'; |
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res[s].score = parseFloat(tokens[1]) || (100 / (lines.length - 2)); |
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numbers.shift(); |
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} else { |
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res[s].type = 'sum'; |
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res[s].score = 100; |
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} |
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for (let i of numbers) { |
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let testcase = { |
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input: input.replace('#', i), |
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output: output.replace('#', i) |
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}; |
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if (!list.includes(testcase.input)) throw `找不到文件 ${testcase.input}`; |
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if (!list.includes(testcase.output)) throw `找不到文件 ${testcase.output}`; |
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res[s].cases.push(testcase); |
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} |
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} |
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res = res.filter(x => x.cases && x.cases.length !== 0); |
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} |
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res.spj = list.includes('spj.js') || list.some(s => s.startsWith('spj_')); |
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return res; |
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} catch (e) { |
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return { error: e }; |
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} |
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}, |
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ansiToHTML(s) { |
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let Convert = require('ansi-to-html'); |
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let convert = new Convert({ escapeXML: true }); |
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return convert.toHtml(s); |
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}, |
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paginate(count, currPage, perPage) { |
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currPage = parseInt(currPage); |
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if (!currPage || currPage < 1) currPage = 1; |
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let pageCnt = Math.ceil(count / perPage); |
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if (currPage > pageCnt) currPage = pageCnt; |
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return { |
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currPage: currPage, |
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perPage: perPage, |
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pageCnt: pageCnt, |
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toSQL: () => { |
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if (!pageCnt) return ''; |
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else return ` LIMIT ${(currPage - 1) * perPage},${perPage}` |
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} |
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}; |
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}, |
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removeTitleTag(s) { |
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return s.replace(/「[\S\s]+?」/, ''); |
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}, |
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md5(data) { |
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let crypto = require('crypto'); |
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let md5 = crypto.createHash('md5'); |
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md5.update(data); |
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return md5.digest('hex'); |
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}, |
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async hitokoto() { |
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try { |
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let request = require('request-promise'); |
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let res = await request({ |
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uri: 'http://api.hitokoto.us/rand', |
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timeout: 1500, |
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qs: { |
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encode: 'json', |
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cat: 'a' |
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}, |
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json: true |
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}); |
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if (!res.hitokoto) return null; |
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else return res; |
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} catch (e) { |
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return null; |
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} |
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}, |
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isValidUsername(s) { |
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return /^[a-zA-Z0-9\-\_]+$/.test(s); |
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}, |
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locks: [], |
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lock(key, cb) { |
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let s = JSON.stringify(key); |
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if (!this.locks[s]) this.locks[s] = new AsyncLock(); |
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return this.locks[s].acquire(s, cb); |
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}, |
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encrypt(buffer, password) { |
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if (typeof buffer === 'string') buffer = Buffer.from(buffer); |
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let crypto = require('crypto'); |
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let cipher = crypto.createCipher('aes-256-ctr', password); |
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return Buffer.concat([cipher.update(buffer), cipher.final()]); |
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}, |
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decrypt(buffer, password) { |
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let crypto = require('crypto'); |
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let decipher = crypto.createDecipher('aes-256-ctr', password); |
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return Buffer.concat([decipher.update(buffer), decipher.final()]); |
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}, |
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async isFile(path) { |
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try { |
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return (await fs.statAsync(path)).isFile(); |
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} catch (e) { |
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return false; |
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} |
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}, |
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async isDir(path) { |
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try { |
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return (await fs.statAsync(path)).isDirectory(); |
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} catch (e) { |
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return false; |
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} |
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} |
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};
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