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exports.attach = function(Handlebars) {
// BEGIN(BROWSER)
var errorProps = ['description', 'fileName', 'lineNumber', 'message', 'name', 'number', 'stack'];
Handlebars.Exception = function(message) {
var tmp = Error.prototype.constructor.apply(this, arguments);
// Unfortunately errors are not enumerable in Chrome (at least), so `for prop in tmp` doesn't work.
for (var idx = 0; idx < errorProps.length; idx++) {
this[errorProps[idx]] = tmp[errorProps[idx]];
}
};
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();
};
var escape = {
"&": "&",
"<": "<",
">": ">",
'"': """,
"'": "'",
"`": "`"
};
var badChars = /[&<>"'`]/g;
var possible = /[&<>"'`]/;
var escapeChar = function(chr) {
return escape[chr] || "&";
};
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 "";
}
// Force a string conversion as this will be done by the append regardless and
// the regex test will do this transparently behind the scenes, causing issues if
// an object's to string has escaped characters in it.
string = string.toString();
if(!possible.test(string)) { return string; }
return string.replace(badChars, escapeChar);
},
isEmpty: function(value) {
if (!value && value !== 0) {
return true;
} else if(toString.call(value) === "[object Array]" && value.length === 0) {
return true;
} else {
return false;
}
}
};
// END(BROWSER)
return Handlebars;
};
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