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scrape.js
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scrape.js
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const cheerio = require('cheerio');
const axios = require('axios');
const fs = require('fs');
const saveImage = (url, name) => {
axios({
url,
responseType: 'stream',
}).then(
(response) =>
new Promise((resolve, reject) => {
response.data
.pipe(fs.createWriteStream(`img/${name}`))
.on('finish', () => resolve())
.on('error', (e) => reject(e));
}),
);
};
const cleanText = (text) =>
text
.replace(/\r?\n|\r/g, ' ')
.replace(/\\n/g, ' ')
.trim();
const scrape = async () => {
try {
const url = 'https://en.wikipedia.org/wiki/Kangxi_radical';
const res = await axios.get(url);
const $ = cheerio.load(res.data);
const rows = $('table:nth-of-type(3) > tbody > tr');
const radicals = [];
// Get basics
rows.each((_, v) => {
const getText = (i) =>
cleanText($(v).find(`td:nth-of-type(${i})`).text());
const getNumber = (i) => +getText(i).replace(/,/g, '');
const getChineseText = (i) =>
$(v).find(`td:nth-of-type(${i}) span`).text().replace(/[、\s]/g, '');
radicals.push({
no: +getText(1),
radical: [...getChineseText(2)],
strokeCount: +getNumber(3),
meaning: getText(4),
pinyin: getText(5),
hanViet: getText(6),
frequency: getNumber(9),
simplified: getText(10).length ? getText(10) : undefined,
examples: [...getChineseText(11)],
});
});
radicals.shift();
// Scape Image
await Promise.all(
radicals.map(async (r, i) => {
const encoded = encodeURIComponent(r.radical[0]);
const res = await axios.all([
axios.get(`https://en.wiktionary.org/wiki/${encoded}`),
axios.get(
`https://commons.wikimedia.org/wiki/File:${encoded}-order.gif`,
),
]);
// Get glyphOrigin
const h3 = cheerio
.load(res[0].data)('[id^="Glyph_origin"]')
.first()
.parent();
const glyphOrigin = [];
h3.nextUntil('h3', 'table')
.first()
.find('tbody > tr:not(.vsHide) > td > a > img')
.each(async (_, v) => {
const src = $(v).attr('src');
const name = src.split('/').pop();
const url = `https:${src}`;
glyphOrigin.push(name);
saveImage(url, name);
});
// Get node
const note = cleanText(h3.nextUntil('h3', 'p').text());
// Get order
const orderURL = cheerio
.load(res[1].data)('img[src$="-order.gif"]')
.attr('src');
const order = orderURL.split('/').pop();
saveImage(orderURL, order);
r.order = order;
r.glyphOrigin = glyphOrigin;
r.note = note;
return {order, glyphOrigin, note};
}),
);
return radicals;
} catch (err) {
console.error(err);
}
};
const generateImageIndex = (radicals) => {
let text = 'const img = {';
radicals.forEach((r) => {
const name = encodeURIComponent(r.radical[0]);
text += `'${name}': {order: require('./${r.order}'), glyphOrigin: [`;
r.glyphOrigin.forEach((o) => {
text += `require('./${o}'),`;
});
text += ']},';
});
text += '}; export default img;';
fs.writeFile('./img/index.js', text, (err) => {
if (err) {
console.error(err);
} else {
console.log('Generate img/index.js');
}
});
};
const generateJSON = (radicals) => {
fs.writeFile('radicals.json', JSON.stringify(radicals), (err) => {
if (err) {
console.error(err);
} else {
console.log('Generate radicals.json');
}
});
};
scrape().then((r) => {
generateImageIndex(r);
generateJSON(r);
});