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index.js
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index.js
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var request = require('request');
var cheerio = require('cheerio');
module.exports = function(url, callback) {
var data = url.match(
/github.com[/:][a-zA-Z0-9\-]*\/[a-zA-Z0-9\-\.]*(\.git){0,1}/
);
if (data == undefined || data[0] === null) {
return setTimeout(function() {
callback(new Error('Unknown url format: ' + url));
});
}
var stub = data[0].replace(/github.com[\/:]/, '');
var parts = stub.split(/\//);
var user = parts[0];
var repo = parts[1];
var url = 'https://github.com/' + user + '/' + repo;
request(url, function(err, result) {
if (err) {
callback(err);
} else {
var langs = {};
var $ = cheerio.load(result.body);
var toggleStats = $('.js-toggle-lang-stats');
toggleStats.find('span').each(function(i, span) {
var lang = $(this).text();
var styleAttr = $(this).attr('style').replace(/[ %]/g, '');
var styles = styleAttr.split(';');
var percent = null;
for (var i = 0; i < styles.length; i++) {
var style = styles[i];
if (style.indexOf('width:') == 0) {
percent = style.replace('width:', '');
break;
}
}
if (percent) {
langs[lang] = parseFloat(percent, 10);
} else {
callback(new Error('Cannot find percent'));
}
});
callback(null, langs);
}
});
};