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Commit 1932b913 1932b913623cec169179cb37c8dbabf2d0871ad8 by Nicolas Perriault
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attempt to add a dowload feature to Casper

1 parent e4c19cd7
Inline Side-by-side
Showing 4 changed files with 105 additions and 12 deletions
......@@ -293,6 +293,13 @@
return this.exit(Number(status) > 0 ? Number(status) : 1);
},
download: function(url, targetPath) {
var fs = require('fs');
var cu = new phantom.Casper.ClientUtils();
fs.write(targetPath, cu.decode(this.base64encode(url)), 'w');
return this;
},
/**
* Iterates over the values of a provided array and execute a callback
* for each item.
......
......@@ -30,6 +30,18 @@
* Casper client-side helpers.
*/
phantom.Casper.ClientUtils = function() {
var BASE64_ENCODE_CHARS = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
var BASE64_DECODE_CHARS = new Array(
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63,
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1,
-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
-1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1
);
/**
* Clicks on the DOM element behind the provided selector.
*
......@@ -56,36 +68,82 @@
};
/**
* Decodes a base64 encoded string. Succeeds where window.atob() fails.
*
* @param String str The base64 encoded contents
* @return string
*/
this.decode = function(str) {
// var c1, c2, c3, c4, i = 0, len = str.length, out = "";
// while (i < len) {
// do {
// c1 = BASE64_DECODE_CHARS[str.charCodeAt(i++) & 0xff];
// } while (i < len && c1 == -1);
// if (c1 == -1) {
// break;
// }
// do {
// c2 = BASE64_DECODE_CHARS[str.charCodeAt(i++) & 0xff];
// } while (i < len && c2 == -1);
// if (c2 == -1) {
// break;
// }
// out += String.fromCharCode((c1 << 2) | ((c2 & 0x30) >> 4));
// do {
// c3 = str.charCodeAt(i++) & 0xff;
// if (c3 == 61)
// return out;
// c3 = BASE64_DECODE_CHARS[c3];
// } while (i < len && c3 == -1);
// if (c3 == -1) {
// break;
// }
// out += String.fromCharCode(((c2 & 0XF) << 4) | ((c3 & 0x3C) >> 2));
// do {
// c4 = str.charCodeAt(i++) & 0xff;
// if (c4 == 61) {
// return out;
// }
// c4 = BASE64_DECODE_CHARS[c4];
// } while (i < len && c4 == -1);
// if (c4 == -1) {
// break;
// }
// out += String.fromCharCode(((c3 & 0x03) << 6) | c4);
// }
// return out;
};
/**
* Base64 encodes a string, even binary ones. Succeeds where
* window.btoa() fails.
*
* @param String str
* @param String str The string content to encode
* @return string
*/
this.encode = function(str) {
var CHARS = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
var out = "", i = 0, len = str.length, c1, c2, c3;
while (i < len) {
c1 = str.charCodeAt(i++) & 0xff;
if (i == len) {
out += CHARS.charAt(c1 >> 2);
out += CHARS.charAt((c1 & 0x3) << 4);
out += BASE64_ENCODE_CHARS.charAt(c1 >> 2);
out += BASE64_ENCODE_CHARS.charAt((c1 & 0x3) << 4);
out += "==";
break;
}
c2 = str.charCodeAt(i++);
if (i == len) {
out += CHARS.charAt(c1 >> 2);
out += CHARS.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4));
out += CHARS.charAt((c2 & 0xF) << 2);
out += BASE64_ENCODE_CHARS.charAt(c1 >> 2);
out += BASE64_ENCODE_CHARS.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4));
out += BASE64_ENCODE_CHARS.charAt((c2 & 0xF) << 2);
out += "=";
break;
}
c3 = str.charCodeAt(i++);
out += CHARS.charAt(c1 >> 2);
out += CHARS.charAt(((c1 & 0x3) << 4) | ((c2 & 0xF0) >> 4));
out += CHARS.charAt(((c2 & 0xF) << 2) | ((c3 & 0xC0) >> 6));
out += CHARS.charAt(c3 & 0x3F);
out += BASE64_ENCODE_CHARS.charAt(c1 >> 2);
out += BASE64_ENCODE_CHARS.charAt(((c1 & 0x3) << 4) | ((c2 & 0xF0) >> 4));
out += BASE64_ENCODE_CHARS.charAt(((c2 & 0xF) << 2) | ((c3 & 0xC0) >> 6));
out += BASE64_ENCODE_CHARS.charAt(c3 & 0x3F);
}
return out;
};
......
(function(t) {
t.comment('ClientUtils.encode()');
var fs = require('fs');
var utils = new phantom.Casper.ClientUtils();
var testCases = {
'an empty string': '',
'a word': 'plop',
'an utf8 string': '<chè!cs!<egfhèqzgrqgzf',
'song lyrics': ("Voilà l'été, j'aperçois le soleil\n" +
"Les nuages filent et le ciel s'éclaircit\n" +
"Et dans ma tête qui bourdonnent?\n" +
"Les abeilles!"),
'a file contents': fs.read(phantom.casperPath + '/tests/site/images/phantom.png')
};
for (var what in testCases) {
var source = testCases[what];
var encoded = utils.encode(source);
t.assertEquals(utils.decode(encoded), source, 'ClientUtils can encode and decode ' + what);
}
t.done();
})(casper.test);
......@@ -2,8 +2,12 @@
t.comment('Casper.base64encode()');
casper.start('tests/site/index.html', function(self) {
var image = self.base64encode('file://' + phantom.casperPath + '/tests/site/images/phantom.png');
var imageUrl = 'file://' + phantom.casperPath + '/tests/site/images/phantom.png';
var image = self.base64encode(imageUrl);
t.assertEquals(image.length, 6160, 'Casper.base64encode() can retrieve base64 contents');
self.download(imageUrl, 'logo.png');
var fs = require('fs');
t.assert(fs.exists('logo.png'), 'Casper.download() downloads a file');
});
casper.run(function(self) {
......