scrape

$ npm install scrape

Example

Scrape the front page of reddit

var scrape = require('scrape');

scrape.request('http://www.reddit.com', function (err, $) {
    if (err) return console.error(err);

    $('div.link').each(function (div) {
        var score = div.find('div.score.unvoted').first()
          , link = div.find('a.title').first();
        console.log('[%s] %s (%s)', score.text, link.text, link.attribs.href);
    });
});

To pass options to the request library use scrape.request(options, callback) and pass in a url like this scrape.request({ url: url }, callback).

To setup default options and return a function that can be used later

var scrape = scrape(default_options);

scrape([options ,] callback);

Options

All options are passed to the curl request library which has built-in support for retries, timeouts, and more - see the README for more information.

Concurrency

The library also includes a helper method for scraping pages in parallel with control over request concurrency.

To scrape 10 pages max at any one time

var scrape = require('scrape');

var urls = [...];

scrape.concurrent(urls, 10, function (url, next) {
    if (url) {
        scrape.request(url, function (err, $) {
            //scrape
            next();
        });
    } else {
        //done
    }
});

License

Copyright (c) 2012 Chris O'Hara [e-mail]

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.