Files
handlebars.js/lib/handlebars/utils.js
T
2011-07-30 12:18:56 -05:00

67 lines
1.5 KiB
JavaScript

var Handlebars = require("./base");
// BEGIN(BROWSER)
Handlebars.Exception = function(message) {
var tmp = Error.prototype.constructor.apply(this, arguments);
for (var p in tmp) {
if (tmp.hasOwnProperty(p)) { this[p] = tmp[p]; }
}
};
Handlebars.Exception.prototype = new Error;
// Build out our basic SafeString type
Handlebars.SafeString = function(string) {
this.string = string;
};
Handlebars.SafeString.prototype.toString = function() {
return this.string.toString();
};
(function() {
var escape = {
"<": "&lt;",
">": "&gt;",
'"': "&quot;",
"'": "&#x27;",
"`": "&#x60;"
};
var badChars = /&(?!\w+;)|[<>"'`]/g;
var possible = /[&<>"'`]/;
var escapeChar = function(chr) {
return escape[chr] || "&amp;";
};
Handlebars.Utils = {
escapeExpression: function(string) {
// don't escape SafeStrings, since they're already safe
if (string instanceof Handlebars.SafeString) {
return string.toString();
} else if (string == null || string === false) {
return "";
}
if(!possible.test(string)) { return string; }
return string.replace(badChars, escapeChar);
},
isEmpty: function(value) {
if (typeof value === "undefined") {
return true;
} else if (value === null) {
return true;
} else if (value === false) {
return true;
} else if(Object.prototype.toString.call(value) === "[object Array]" && value.length === 0) {
return true;
} else {
return false;
}
}
};
})();
// END(BROWSER)