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node-task/node_modules/nodeunit/deps/console.log.js
2014-09-18 15:35:58 -04:00

56 lines
1.4 KiB
JavaScript

/*
A console.log that won't leave you hanging when node exits
90% of this file was ripped from node.js
License: see: https://github.com/joyent/node/blob/master/lib/console.js
*/
// console object
var formatRegExp = /%[sdj]/g;
function format(f) {
var util = require('util');
if (typeof f !== 'string') {
var objects = [];
for (var i = 0; i < arguments.length; i++) {
objects.push(util.inspect(arguments[i]));
}
return objects.join(' ');
}
var i = 1;
var args = arguments;
var str = String(f).replace(formatRegExp, function(x) {
switch (x) {
case '%s': return String(args[i++]);
case '%d': return Number(args[i++]);
case '%j': return JSON.stringify(args[i++]);
default:
return x;
}
});
for (var len = args.length, x = args[i]; i < len; x = args[++i]) {
if (x === null || typeof x !== 'object') {
str += ' ' + x;
} else {
str += ' ' + util.inspect(x);
}
}
return str;
}
console.log = function() {
var res = process.stdout.write(format.apply(this, arguments) + '\n');
// this is the first time stdout got backed up
if (!res && !process.stdout.pendingWrite) {
process.stdout.pendingWrite = true;
// magic sauce: keep node alive until stdout has flushed
process.stdout.once('drain', function () {
process.stdout.draining = false;
});
}
};