save multiple captures from same site with one casper.open

[giko45]

I needed to save multiple captures from same site with one casper.open.

i solved it by modifying webshot.js as below incase anyone is intrested

`// This must be executed with phantomjs
// Take a screenshot of a URL and saves it to a .png file
// phantomjs webshot.js
//
// 'optsList' is a JSON array containing configurations for each screenshot that has
// to be taken. Each configuration object needs to contain at least properties
// "url" and "file". For instance:
// [{"url":"http://rstudio.github.io/leaflet/","file":"webshot.png"}]

var utils = require('./utils');
var system = require('system');

phantom.casperPath = phantom.libraryPath + '/casperjs';
phantom.injectJs(phantom.casperPath + '/bin/bootstrap.js');

var opt_defaults = {
delay: 0.2,
vwidth: 992,
vheight: 744,
zoom: 1
};

// =====================================================================
// Command line arguments
// =====================================================================
var args = system.args;

if (args.length < 2) {
console.log(
'Usage:\n' +
' phantomjs webshot.js \n' +
'\n' +
'optsList is a JSON array containing configuration for each screenshot.\n' +
'For instance:\n' +
''[{"url":"url1.html","file":"file1.png"},{"url":"url2.html","file":"fil2.png","zoom":2}]'');
phantom.exit(1);
}

var optsList = JSON.parse(args[1]);

// Options passed to CasperJS
var casperOpts = {};
if (optsList[0].options) {
casperOpts = JSON.parse(optsList[0].options);
}

// debug is a special option. The value from the first element in the
// optsList array is applied globally.
if (optsList[0].debug) {
casperOpts.verbose = true;
casperOpts.logLevel = 'debug';
}
delete optsList.debug;

var casper = require('casper').create(casperOpts);

// =====================================================================
// Screenshot
// =====================================================================

casper.start();
casper.options.onLoadError = function(c, url) {
console.log("Could not load ", url);
phantom.exit(1);
};

//////// ADDED FOR ONLY REQUESTING FIRST URL, REST IS IGNORED //////////////////
casper.then(function() {
var opts = optsList[1];

// Prepare options
opts = utils.fillMissing(opts, opt_defaults);

// Go to url and perform the desired screenshot
this.zoom(opts.zoom)
.viewport(opts.zoom * opts.vwidth, opts.zoom * opts.vheight)
.thenOpen(opts.url)
.wait(opts.delay * 1000)
});
//////// ADDED FOR ONLY REQUESTING FIRST URL, REST IS IGNORED //////////////////

casper.eachThen(optsList, function(response) {
var opts = response.data;

// Prepare options
opts = utils.fillMissing(opts, opt_defaults);

// This should be four numbers separated by ","
if (opts.cliprect) {
opts.cliprect = opts.cliprect.split(",");
opts.cliprect = opts.cliprect.map(function(x) { return +x; });
}

// Can be 1 or 4 numbers separated by ","
if (opts.expand) {
opts.expand = opts.expand.split(",");
opts.expand = opts.expand.map(function(x) { return +x; });
if (opts.expand.length !== 1 && opts.expand.length !== 4) {
console.log("'expand' must have either 1 or 4 values.");
phantom.exit(1);
}
}

// Can have multiple selectors
if (opts.selector) {
opts.selector = opts.selector.split(",");
}

//////// FIRST THREE CALLS ARE ALREADY DONE, ONLY SAVE selector //////////////////
// Go to url and perform the desired screenshot
// this.zoom(opts.zoom)
// .viewport(opts.zoom * opts.vwidth, opts.zoom * opts.vheight)
// .thenOpen(opts.url)
// .wait(opts.delay * 1000)
this.then(function() {
if (opts.eval) {
eval(opts.eval);
}
})
.then(function() {
var cr = findClipRect(opts, this);
this.capture(opts.file, cr);
});
});

casper.run();

`