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104 lines
3.5 KiB
JavaScript
104 lines
3.5 KiB
JavaScript
// Warning: The author knows nothing about javascript!
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// params:
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// count? : count of new-books
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const got = require('@/utils/got'); // get web content
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const cheerio = require('cheerio'); // html parser
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const he = require('he');
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const base_url = 'https://www.aozora.gr.jp/index_pages/';
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module.exports = async (ctx) => {
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// get the update list
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const response = await got({
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method: 'get',
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url: base_url + 'whatsnew1.html',
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});
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const data = response.data; // content is html format
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const $ = cheerio.load(data);
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const list = $('table.list tr');
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// get how many new-books. amount in this page is 50
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let count = parseInt(ctx.params.count);
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if (Number.isNaN(count) || count < 1) {
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count = 10; // default count of new-book list
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} else if (count > 50) {
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count = 50;
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}
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// parse book urls
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const detail_urls = [];
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for (let i = 1; i < count + 1; ++i) {
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// i = 1: first tr is table title, ignore
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const link =
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base_url +
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$(list[i])
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.find('a')
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.attr('href');
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detail_urls.push(link);
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}
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// get book-cards
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const responses = await Promise.all(detail_urls.map((url) => got(url)));
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const cards = responses.map(({ data }) => data);
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// get real data to feed
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const book_list = [];
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for (let i = 0; i < count; ++i) {
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const $ = cheerio.load(cards[i]);
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const link = $('meta[property="og:url"]').attr('content');
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const link_dir = link.replace(/\/[^/]*$/g, '/');
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const title_info = $('table[summary="タイトルデータ"] > tbody > tr');
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let author = '';
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let title = '';
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let title_sub = '';
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for (let j = 0; j < title_info.length; ++j) {
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const tmp = he.decode($(title_info[j]).html()); // should convert from escaped to unicode
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if (tmp.includes('作品名：')) {
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title = $(title_info[j])
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.find('td:nth-child(2)')
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.text();
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}
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if (tmp.includes('副題：')) {
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title_sub = $(title_info[j])
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.find('td:nth-child(2)')
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.text();
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}
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if (tmp.includes('著者名：')) {
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author = $(title_info[j])
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.find('td:nth-child(2)')
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.text();
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}
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}
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if (title_sub !== '') {
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title += ' —— ' + title_sub;
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}
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const pub_date_raw = $('table[summary="底本データ"] > tbody > tr:nth-child(3) > td:nth-child(2)').text();
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const pub_date_num = pub_date_raw.replace(/（.*）|日/g, '').replace(/[年月]/g, '-');
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const pub_date = new Date(pub_date_num).toUTCString();
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const full_text_relative_link = $('table.download > tbody > tr:nth-child(3) > td:nth-child(3) > a').attr('href');
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const full_text_link = link_dir + full_text_relative_link;
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const full_text_link_html = '<a href="' + full_text_link + '">いますぐXHTML版で読む</a><br>';
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const summury = $('table[summary="作品データ"]')
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.html()
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.replace(/href="/g, 'href="' + link_dir);
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const item = {
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title: title,
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author: author,
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pubDate: pub_date,
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link: link,
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description: full_text_link_html + summury,
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};
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book_list.push(item);
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}
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// feed the data
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ctx.state.data = {
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title: '青空文庫新着リスト',
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link: base_url + 'whatsnew1.html',
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item: book_list,
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};
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};
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