mirror of
https://github.com/DIYgod/RSSHub.git
synced 2025-12-06 05:03:44 +08:00
241 lines
9.9 KiB
JavaScript
241 lines
9.9 KiB
JavaScript
const he = require('he');
|
||
const mercury_parser = require('@postlight/mercury-parser');
|
||
const cheerio = require('cheerio');
|
||
const OpenCC = require('opencc');
|
||
const got = require('@/utils/got');
|
||
const config = require('@/config').value;
|
||
|
||
module.exports = async (ctx, next) => {
|
||
await next();
|
||
|
||
if (!ctx.state.data && !ctx._matchedRoute) {
|
||
ctx.set({
|
||
'Cache-Control': `public, max-age=${config.cache.routeExpire * 100}`,
|
||
});
|
||
throw Error('wrong path');
|
||
}
|
||
|
||
if (ctx.state.data) {
|
||
if ((!ctx.state.data.item || ctx.state.data.item.length === 0) && !ctx.state.data.allowEmpty) {
|
||
throw Error('this route is empty, please check the original site or <a href="https://github.com/DIYgod/RSSHub/issues/new/choose">create an issue</a>');
|
||
}
|
||
|
||
// fix allowEmpty
|
||
ctx.state.data.item = ctx.state.data.item || [];
|
||
|
||
// decode HTML entities
|
||
ctx.state.data.title && (ctx.state.data.title = he.decode(ctx.state.data.title + ''));
|
||
ctx.state.data.description && (ctx.state.data.description = he.decode(ctx.state.data.description + ''));
|
||
|
||
// sort items
|
||
ctx.state.data.item = ctx.state.data.item.sort((a, b) => +new Date(b.pubDate || 0) - +new Date(a.pubDate || 0));
|
||
|
||
ctx.state.data.item.forEach((item) => {
|
||
item.title && (item.title = he.decode(item.title + ''));
|
||
|
||
// handle pubDate
|
||
if (item.pubDate) {
|
||
item.pubDate = new Date(item.pubDate).toUTCString();
|
||
}
|
||
|
||
// handle link
|
||
if (item.link) {
|
||
let baseUrl = ctx.state.data.link;
|
||
if (baseUrl && !baseUrl.match(/^https?:\/\//)) {
|
||
if (baseUrl.match(/^\/\//)) {
|
||
baseUrl = 'http:' + baseUrl;
|
||
} else {
|
||
baseUrl = 'http://' + baseUrl;
|
||
}
|
||
}
|
||
|
||
item.link = new URL(item.link, baseUrl).href;
|
||
}
|
||
|
||
// handle description
|
||
if (item.description) {
|
||
const $ = cheerio.load(item.description);
|
||
let baseUrl = item.link || ctx.state.data.link;
|
||
|
||
if (baseUrl && !baseUrl.match(/^https?:\/\//)) {
|
||
if (baseUrl.match(/^\/\//)) {
|
||
baseUrl = 'http:' + baseUrl;
|
||
} else {
|
||
baseUrl = 'http://' + baseUrl;
|
||
}
|
||
}
|
||
|
||
$('script').remove();
|
||
|
||
$('a').each((_, ele) => {
|
||
const $ele = $(ele);
|
||
|
||
// absolute link
|
||
if (baseUrl) {
|
||
try {
|
||
$ele.attr('href', new URL($ele.attr('href'), baseUrl).href);
|
||
} catch (e) {
|
||
// no-empty
|
||
}
|
||
}
|
||
});
|
||
|
||
$('img').each((_, ele) => {
|
||
const $ele = $(ele);
|
||
|
||
// fix lazyload
|
||
if (!$ele.attr('src')) {
|
||
for (const key in ele.attribs) {
|
||
const value = ele.attribs[key].trim();
|
||
if (['.gif', '.png', '.jpg', '.webp'].some((suffix) => value.includes(suffix))) {
|
||
$ele.attr('src', value);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
// absolute link
|
||
if (baseUrl) {
|
||
try {
|
||
$ele.attr('src', new URL($ele.attr('src'), baseUrl).href);
|
||
} catch (e) {
|
||
// no-empty
|
||
}
|
||
}
|
||
|
||
// referrerpolicy
|
||
$ele.attr('referrerpolicy', 'no-referrer');
|
||
|
||
// redundant attributes
|
||
['onclick', 'onerror', 'onload'].forEach((e) => {
|
||
$ele.removeAttr(e);
|
||
});
|
||
});
|
||
item.description = he.decode($('body').html() + '') + (config.suffix || '');
|
||
}
|
||
});
|
||
|
||
if (ctx.query) {
|
||
// limit
|
||
if (ctx.query.limit) {
|
||
ctx.state.data.item = ctx.state.data.item.slice(0, parseInt(ctx.query.limit));
|
||
}
|
||
|
||
// filter
|
||
const makeRegex = (string) => {
|
||
// default: case_senstivie = true
|
||
if (ctx.query.filter_case_sensitive === 'false') {
|
||
return new RegExp(string, 'i');
|
||
} else {
|
||
return new RegExp(string);
|
||
}
|
||
};
|
||
|
||
if (ctx.query.filter) {
|
||
ctx.state.data.item = ctx.state.data.item.filter((item) => {
|
||
const title = item.title || '';
|
||
const description = item.description || title;
|
||
const author = item.author || '';
|
||
const isFilter = title.match(makeRegex(ctx.query.filter)) || description.match(makeRegex(ctx.query.filter)) || author.match(makeRegex(ctx.query.filter));
|
||
return isFilter;
|
||
});
|
||
}
|
||
|
||
// 启用filter参数时，无效filter_title/description/author
|
||
if (!ctx.query.filter && (ctx.query.filter_title || ctx.query.filter_description || ctx.query.filter_author)) {
|
||
ctx.state.data.item = ctx.state.data.item.filter((item) => {
|
||
const title = item.title || '';
|
||
const description = item.description || title;
|
||
const author = item.author || '';
|
||
let isFilter = true;
|
||
ctx.query.filter_title && (isFilter = title.match(makeRegex(ctx.query.filter_title)));
|
||
ctx.query.filter_description && (isFilter = isFilter && description.match(makeRegex(ctx.query.filter_description)));
|
||
ctx.query.filter_author && (isFilter = isFilter && author.match(makeRegex(ctx.query.filter_author)));
|
||
return isFilter;
|
||
});
|
||
}
|
||
|
||
if (ctx.query.filterout || ctx.query.filterout_title || ctx.query.filterout_description || ctx.query.filterout_author) {
|
||
if (ctx.query.filterout) {
|
||
ctx.query.filterout_title = ctx.query.filterout;
|
||
ctx.query.filterout_description = ctx.query.filterout;
|
||
}
|
||
ctx.state.data.item = ctx.state.data.item.filter((item) => {
|
||
const title = item.title;
|
||
const description = item.description || title;
|
||
const author = item.author || '';
|
||
let isFilter = true;
|
||
ctx.query.filterout_title && (isFilter = !title.match(makeRegex(ctx.query.filterout_title)));
|
||
ctx.query.filterout_description && (isFilter = isFilter && !description.match(makeRegex(ctx.query.filterout_description)));
|
||
ctx.query.filterout_author && (isFilter = isFilter && !author.match(makeRegex(ctx.query.filterout_author)));
|
||
return isFilter;
|
||
});
|
||
}
|
||
|
||
if (ctx.query.filter_time) {
|
||
const now = Date.now();
|
||
ctx.state.data.item = ctx.state.data.item.filter(({ pubDate }) => {
|
||
let isFilter = true;
|
||
try {
|
||
isFilter = !pubDate || now - new Date(pubDate).getTime() <= parseInt(ctx.query.filter_time) * 1000;
|
||
} catch (err) {
|
||
// no-empty
|
||
}
|
||
return isFilter;
|
||
});
|
||
}
|
||
|
||
// telegram instant view
|
||
if (ctx.query.tgiv) {
|
||
ctx.state.data.item.map((item) => {
|
||
const encodedlink = encodeURIComponent(item.link);
|
||
item.link = `https://t.me/iv?url=${encodedlink}&rhash=${ctx.query.tgiv}`;
|
||
return item;
|
||
});
|
||
}
|
||
|
||
// fulltext
|
||
if (ctx.query.mode && ctx.query.mode.toLowerCase() === 'fulltext') {
|
||
const tasks = ctx.state.data.item.map(async (item) => {
|
||
const { link, author, description } = item;
|
||
const parsed_result = await ctx.cache.tryGet(`mercury-cache-${link}`, async () => {
|
||
// if parser failed, return default description and not report error
|
||
try {
|
||
const res = await got(link);
|
||
const $ = cheerio.load(res.data);
|
||
const result = await mercury_parser.parse(link, {
|
||
html: $.html(),
|
||
});
|
||
return result;
|
||
} catch (e) {
|
||
// no-empty
|
||
}
|
||
});
|
||
|
||
item.author = author || (parsed_result ? parsed_result.author : '');
|
||
item.description = parsed_result ? parsed_result.content : description;
|
||
});
|
||
await Promise.all(tasks);
|
||
}
|
||
|
||
// scihub
|
||
if (ctx.query.scihub) {
|
||
ctx.state.data.item.map((item) => {
|
||
item.link = item.doi ? `${config.scihub.host}${item.doi}` : `${config.scihub.host}${item.link}`;
|
||
return item;
|
||
});
|
||
}
|
||
|
||
// opencc
|
||
if (ctx.query.opencc) {
|
||
const converter = new OpenCC(`${ctx.query.opencc}.json`);
|
||
const tasks = ctx.state.data.item.map(async (item) => {
|
||
item.title = await converter.convertPromise(item.title);
|
||
item.description = await converter.convertPromise(item.description);
|
||
});
|
||
await Promise.all(tasks);
|
||
}
|
||
}
|
||
}
|
||
};
|