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refactor: avoid promise overhead (#8028)

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Sukka
2021-08-17 02:45:53 +08:00
committed by GitHub
parent 8053b33b03
commit 6e3b58ed1d
543 changed files with 5295 additions and 5694 deletions
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96
lib/routes/leetcode/utils.js
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@@ -1,55 +1,53 @@
const cheerio = require('cheerio');
const ProcessFeed = async (list) => {
const ProcessFeed = (list) => {
const host = 'https://leetcode.com';
return await Promise.all(
list.map(async (item) => {
const $ = cheerio.load(item);
const $title = $('b');
const description = $('span').eq(0).text() + $('span').eq(1).text();
// 还原相对链接为绝对链接
const pubDate = $('span').eq(2).text();
const bb = $('a[href]').get()[0];
const itemUrl = host + $(bb).attr('href');
let n = 0,
h = 0;
const n1 = pubDate.search(/year/);
const n2 = pubDate.search(/month/);
const n3 = pubDate.search(/week/);
const n4 = pubDate.search(/day/);
const n5 = pubDate.search(/hour/);
const n6 = pubDate.search(/minute/);
if (n1 !== -1) {
n = n + parseInt(pubDate.substring(n1 - 3, n1 - 1)) * 365;
}
if (n2 !== -1) {
n = n + parseInt(pubDate.substring(n2 - 3, n2 - 1)) * 30;
}
if (n3 !== -1) {
n = n + parseInt(pubDate.substring(n3 - 3, n3 - 1)) * 7;
}
if (n4 !== -1) {
n = n + parseInt(pubDate.substring(n4 - 3, n4 - 1)) * 1;
}
if (n5 !== -1) {
h = h + parseInt(pubDate.substring(n5 - 3, n5 - 1)) * 3600;
}
if (n6 !== -1) {
h = h + parseInt(pubDate.substring(n6 - 3, n6 - 1)) * 60;
}
const now = new Date();
const Datenow = new Date(now.getTime() - n * 24 * 3600 * 1000 - h * 1000).toLocaleString().replace(/:\d{1,2}$/, ' ');
// 列表上提取到的信息
const single = {
title: $title.text(),
description: description,
link: itemUrl,
guid: itemUrl,
pubDate: Datenow,
};
return Promise.resolve(Object.assign({}, single));
})
);
return list.map((item) => {
const $ = cheerio.load(item);
const $title = $('b');
const description = $('span').eq(0).text() + $('span').eq(1).text();
// 还原相对链接为绝对链接
const pubDate = $('span').eq(2).text();
const bb = $('a[href]').get()[0];
const itemUrl = host + $(bb).attr('href');
let n = 0,
h = 0;
const n1 = pubDate.search(/year/);
const n2 = pubDate.search(/month/);
const n3 = pubDate.search(/week/);
const n4 = pubDate.search(/day/);
const n5 = pubDate.search(/hour/);
const n6 = pubDate.search(/minute/);
if (n1 !== -1) {
n = n + parseInt(pubDate.substring(n1 - 3, n1 - 1)) * 365;
}
if (n2 !== -1) {
n = n + parseInt(pubDate.substring(n2 - 3, n2 - 1)) * 30;
}
if (n3 !== -1) {
n = n + parseInt(pubDate.substring(n3 - 3, n3 - 1)) * 7;
}
if (n4 !== -1) {
n = n + parseInt(pubDate.substring(n4 - 3, n4 - 1)) * 1;
}
if (n5 !== -1) {
h = h + parseInt(pubDate.substring(n5 - 3, n5 - 1)) * 3600;
}
if (n6 !== -1) {
h = h + parseInt(pubDate.substring(n6 - 3, n6 - 1)) * 60;
}
const now = new Date();
const Datenow = new Date(now.getTime() - n * 24 * 3600 * 1000 - h * 1000).toLocaleString().replace(/:\d{1,2}$/, ' ');
// 列表上提取到的信息
const single = {
title: $title.text(),
description: description,
link: itemUrl,
guid: itemUrl,
pubDate: Datenow,
};
return Object.assign({}, single);
});
};
module.exports = {
ProcessFeed,