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Commit 8877515f 8877515fa5311ae80adfba79d0bf7bcfb7d527a0 by Nicolas Perriault
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introducing client-side utils :)

1 parent bbd5410c
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Showing 1 changed file with 91 additions and 46 deletions
/*!
* Casper is a navigator for PhantomJS - http://github.com/n1k0/casperjs
* Casper is a navigation utility for PhantomJS - http://github.com/n1k0/casperjs
*
* Copyright (c) 2011 Nicolas Perriault
*
......@@ -89,41 +89,7 @@
*/
base64encode: function(url) {
return result = this.evaluate(function() {
function encode(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 += "==";
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 += "=";
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);
}
return out;
}
function getBinary(url) {
var xhr = new XMLHttpRequest();
xhr.open("GET", url, false);
xhr.overrideMimeType("text/plain; charset=x-user-defined");
xhr.send(null);
return xhr.responseText;
}
return encode(getBinary('%url%'));
return __utils__.encode(__utils__.getBinary('%url%'));
}, {
url: url
});
......@@ -263,16 +229,7 @@
* @see WebPage#evaluate
*/
evaluate: function(fn, replacements) {
if (replacements && typeof replacements === "object") {
fn = fn.toString();
for (var p in replacements) {
var match = '%' + p + '%';
do {
fn = fn.replace(match, replacements[p]);
} while(fn.indexOf(match) !== -1);
}
}
return this.page.evaluate(fn);
return this.page.evaluate(replaceFunctionPlaceholders(fn, replacements));
},
/**
......@@ -478,6 +435,60 @@
};
/**
* Casper client-side helpers.
*/
phantom.Casper.ClientUtils = function() {
/**
* Base64 encodes a string, even binary ones. Succeeds where
* window.btoa() fails.
*
* @param string str
* @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 += "==";
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 += "=";
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);
}
return out;
};
/**
* Retrieves string contents from a binary file behind an url.
*
* @param string url
* @return string
*/
this.getBinary = function(url) {
var xhr = new XMLHttpRequest();
xhr.open("GET", url, false);
xhr.overrideMimeType("text/plain; charset=x-user-defined");
xhr.send(null);
return xhr.responseText;
};
};
/**
* Creates a new WebPage instance for Casper use.
*
* @param Casper casper A Casper instance
......@@ -505,6 +516,19 @@
}
}
}
// Client utils injection
var injected = page.evaluate(replaceFunctionPlaceholders(function() {
eval("var ClientUtils = " + decodeURIComponent("%utils%"));
__utils__ = new ClientUtils();
return __utils__ instanceof ClientUtils;
}, {
utils: encodeURIComponent(phantom.Casper.ClientUtils.toString())
}));
if (!injected) {
casper.log('Failed to inject Casper client-side utilities!', "debug");
} else {
casper.log('Successfully injected Casper client-side utilities', "debug");
}
casper.loadInProgress = false;
};
page.onResourceReceived = function(resource) {
......@@ -536,4 +560,25 @@
}
return obj1;
}
/**
* Replaces a function string contents with placeholders provided by an
* Object.
*
* @param function fn The function
* @param object replacements Object containing placeholder replacements
* @return string A function string representation
*/
function replaceFunctionPlaceholders(fn, replacements) {
if (replacements && typeof replacements === "object") {
fn = fn.toString();
for (var p in replacements) {
var match = '%' + p + '%';
do {
fn = fn.replace(match, replacements[p]);
} while(fn.indexOf(match) !== -1);
}
}
return fn;
}
})(phantom);
......