Get the driver list from lenovo. Useful for creating download list with download manager and generate file checksum

lenovo-driver

(function(d, w) {
	var utility = {
		trim: word => word.replace(/(^\s+|\s+$)/g, ''),
		empty: word => !word || /^\s*$/.test(word),
		createNode: (node, text) => {
			let element = d.createElement(node);
			if (text) element.innerText = text;
			return element;
		},
		toArray: list => list instanceof Array ? list : Array.prototype.slice.call(list)
	};
	let thinkPad = {
		getTitle(node) {
			return node.querySelector('.file-description .file-title > a').innerText;
		},
		getLabels(node) {
			return utility.toArray(node.querySelectorAll('.file-list .file-item .dc-link > span > a')).map(el => el.innerText);
		},
		getUrls(node) {
			return utility.toArray(node.querySelectorAll('.file-list .file-item .dl-link-btn')).map(el => el.href);
		},
		getFilenames(node) {
			let urls = this.getUrls(node);
			let parser = /\/([^\/]+\.\w+)$/;
			return urls.map(url => {
				if (utility.empty(url)) return null;
				let temp = parser.exec(url);
				return temp != null && temp.length > 1 ? temp[1] : null;
			});
		},
		getChecksums(node) {
			let lines = utility.toArray(node.querySelectorAll('.file-list .file-item'));
			return lines.map(line => {
				let checksumElement = utility.toArray(line.querySelectorAll('.ds-check-sum .check-sum-block p.line'));
				let checksums = {}
				checksumElement.forEach(line => {
					let text = line.innerText;
					let splitted = text.split(':');
					if (splitted.length < 2) return null;
					checksums[splitted[0].trim()] = splitted[1].trim();
				});

				return checksums;
			})
		},
		getDrivers(rows, exclude) {
			let converted = utility.toArray(rows);
			let drivers = [];
			converted.forEach(row => {
				let title = this.getTitle(row);
				let labels = this.getLabels(row);
				let urls = this.getUrls(row);
				let filenames = this.getFilenames(row);
				let checksums = this.getChecksums(row);
				if (labels.length != urls.length &&
					urls.length != filenames.length &&
					filenames.length != checksums.length)
					return;
				for (let i = 0, length = labels.length; i < length; i++) {
					if (exclude instanceof Function && exclude(title, labels[i], urls[i], filenames[i]))
						continue;
					drivers.push({
						title,
						label: labels[i],
						url: urls[i],
						filename: filenames[i],
						checksums: checksums[i]
					});
				}
			});	

			return drivers;
		},
		dump(data) {
			while (d.body.firstChild) d.body.removeChild(d.body.firstChild);

			// create table container and header
			var table = d.createElement('table');
			var head = d.createElement('thead');
			var rowHead = d.createElement('tr');
			rowHead.appendChild(utility.createNode('th', 'Label'));
			rowHead.appendChild(utility.createNode('th', 'Title'));
			rowHead.appendChild(utility.createNode('th', 'File name'));
			rowHead.appendChild(utility.createNode('th', 'URL'));
			rowHead.appendChild(utility.createNode('th', 'SHA1'));
			rowHead.appendChild(utility.createNode('th', 'MD5'));
			head.appendChild(rowHead);
			table.appendChild(head);

			// create row container and its children
			var body = d.createElement('tbody');
			data.forEach(item => {
				var row = d.createElement('tr');
				row.appendChild(utility.createNode('td', item.label));
				row.appendChild(utility.createNode('td', item.title));
				row.appendChild(utility.createNode('td', item.filename));
				row.appendChild(utility.createNode('td', item.url));
				row.appendChild(utility.createNode('td', item.checksums['SHA1']));
				row.appendChild(utility.createNode('td', item.checksums['MD5']));
				body.appendChild(row);
			});

			// wrap it up
			table.appendChild(body);
			d.body.appendChild(table);
		}
	};

	let rows = d.querySelectorAll('section.row.filtered-list .main-listing .row.line-item');
	let data = thinkPad.getDrivers(rows, (title, label, url, filename) => {
		if (/^(user Guide)/i.test(label)) return true;
		if (/^README/i.test(label)) return true;
		if (/\.(pdf|txt)$/i.test(filename)) return true;
		return false;
	});
	thinkPad.dump(data);

	w.ThinkPad = thinkPad;
	w.Utility = utility;
})(document, window);