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Parse the body after you have checked for an error #23

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j3lte wants to merge 2 commits into from
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Parse the body after you have checked for an error #23

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bf95681
Update scraper.js
j3lte Apr 21, 2013
3757d98
JSLinted, fixing some code
j3lte Aug 16, 2013
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61 changes: 34 additions & 27 deletions lib/scraper.js
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Original file line number Diff line number Diff line change
@@ -1,79 +1,78 @@
var request = require('request');
var jsdom = require('jsdom');
/*jslint node:true sub:true */
/*global require */


var request = require('request'),
jsdom = require('jsdom');

var requestDefaults = {
'uri': null
, 'headers': {
'uri' : null,
'headers' : {
'User-Agent': 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0)'
}
};
var fetchDefaults = {
'reqPerSec': 0
};
module.exports = function scrape(requestOptions, callback, fetchOptions) {
'use strict';
if (!fetchOptions) {
fetchOptions = {};
}
if (!callback) {
callback = function(){};
callback = function () {};
}
Object.keys(fetchDefaults).forEach(function(key) {
Object.keys(fetchDefaults).forEach(function (key) {
if (fetchOptions[key] === undefined) {
fetchOptions[key] = fetchDefaults[key]
fetchOptions[key] = fetchDefaults[key];
}
});

var fetches = [];
var queue = [];
var fetches = [],
queue = [];

if (!Array.isArray(requestOptions)) {
fetches.push(requestOptions);
} else {
fetches = requestOptions;
}

fetches.forEach(function(requestOptions, index) {
queue.push(function() {
Object.keys(requestDefaults).forEach(function(key) {
fetches.forEach(function (requestOptions, index) {
queue.push(function () {
Object.keys(requestDefaults).forEach(function (key) {
requestOptions[key] = requestOptions[key] || requestDefaults[key];
});
if (typeof requestOptions === 'string') {
requestOptions = {
'uri': requestOptions
}
};
}

if (!requestOptions['uri']) {
callback(new Error('You must supply an uri.'), null, null);
}

request(requestOptions, function (err, response, body) {
body = body.replace(/<(\/?)script/g, '<$1nobreakage');
setTimeout(runNextFetch, timeSpacing);
if (err) {
callback(err, null, null);
}
if (response && response.statusCode == 200) {
if (response && response.statusCode === 200) {
body = body.replace(/<(\/?)script/g, '<$1nobreakage');
var window = jsdom.jsdom().createWindow();
jsdom.jQueryify(window, __dirname+'/../deps/jquery-1.6.1.min.js', function(win, $) {
jsdom.jQueryify(window, __dirname + '/../deps/jquery-1.6.1.min.js', function (win, $) {
$('head').append($(body).find('head').html());
$('body').append($(body).find('body').html());
callback(null, $);
});
} else {
callback(new Error('Request to '+requestOptions['uri']+' ended with status code: '+(typeof response !== 'undefined' ? response.statusCode : 'unknown')), null, null);
callback(new Error('Request to ' + requestOptions['uri'] + ' ended with status code: ' + (typeof response !== 'undefined' ? response.statusCode : 'unknown')), null, null);
}
});
})
});
});

var concurrentConnections = !fetchOptions['reqPerSec'] ? queue.length : (Math.floor(fetchOptions['reqPerSec']) || 1);
var timeSpacing = !fetchOptions['reqPerSec'] ? 0 : 1000/fetchOptions['reqPerSec'];

for (var i=0; i < concurrentConnections; i++) {
runNextFetch(i);
};

function runNextFetch(i) {

function runNextFetch(i) {
if (!i) {
i = 0;
}
Expand All @@ -82,4 +81,12 @@ module.exports = function scrape(requestOptions, callback, fetchOptions) {
queue.shift();
}
}

var concurrentConnections = !fetchOptions['reqPerSec'] ? queue.length : (Math.floor(fetchOptions['reqPerSec']) || 1);
var timeSpacing = !fetchOptions['reqPerSec'] ? 0 : 1000 / fetchOptions['reqPerSec'];

for (var i=0; i < concurrentConnections; i++) {
runNextFetch(i);
};

};