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util.js
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util.js
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/** Blade utility functions
(c) Copyright 2012. Blake Miner. All rights reserved.
https://github.com/bminer/node-blade
http://www.blakeminer.com/
See the full license here:
https://raw.github.com/bminer/node-blade/master/LICENSE.txt
*/
/* Used by the Blade compiler to support variable interpolation for a
double quoted string with double quotes escaped.
(which matches the output of JSON.stringify)
Usage: interpolate(JSON.stringify(some_string) )
*/
exports.interpolate = function interpolate(str, ns) {
return str.replace(/(\\)?#{([^}]*)}/g, function(match, escaped, code) {
return escaped ? "#{" + code + "}" : "\"+((" + ns + ".z=" + code.replace(/\\"/g, '"') +
") == null ? '' : " + ns + ".z)+\"";
});
};
/* Escapes single quotes in the string */
exports.quote = function quote(str) {
return str.replace(/'/g, "\\'");
};
/* Use uglify-js to obfuscate and optimize JavaScript code */
var uglifyjs = null;
try {
uglifyjs = require("uglify-js");
} catch(e) {}
exports.uglify = function(str, minify) {
if(uglifyjs)
{
if(uglifyjs.minify)
{
//Version 2.3+
var opts = {"fromString": true};
if(!minify)
{
opts.compress = opts.mangle = false;
opts.output = {
"beautify": true,
"comments": true
}
}
str = uglifyjs.minify(str, opts).code;
}
else if(uglifyjs.parser)
{
//Version 1.x - kept for legacy support and to work with Meteor
var ast = uglifyjs.parser.parse(str),
ugly = uglifyjs.uglify;
if(minify)
{
ast = ugly.ast_mangle(ast);
ast = ugly.ast_squeeze(ast);
}
str = ugly.gen_code(ast, {'beautify': !minify});
}
}
return str;
};