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var noop = exports.noop = function(){};
exports.extend = function extend(dest, source) {
for (var prop in source) {
dest[prop] = source[prop];
}
};
exports.eventEmitterListenerCount =
require('events').EventEmitter.listenerCount ||
function(emitter, type) { return emitter.listeners(type).length; };
exports.bufferAllocUnsafe = Buffer.allocUnsafe ?
Buffer.allocUnsafe :
function oldBufferAllocUnsafe(size) { return new Buffer(size); };
exports.bufferFromString = Buffer.from ?
Buffer.from :
function oldBufferFromString(string, encoding) {
return new Buffer(string, encoding);
};
exports.BufferingLogger = function createBufferingLogger(identifier, uniqueID) {
try {
var logFunction = require('debug')(identifier);
}
catch(e) {
logFunction = noop;
logFunction.enabled = false;
}
if (logFunction.enabled) {
var logger = new BufferingLogger(identifier, uniqueID, logFunction);
var debug = logger.log.bind(logger);
debug.printOutput = logger.printOutput.bind(logger);
debug.enabled = logFunction.enabled;
return debug;
}
logFunction.printOutput = noop;
return logFunction;
};
function BufferingLogger(identifier, uniqueID, logFunction) {
this.logFunction = logFunction;
this.identifier = identifier;
this.uniqueID = uniqueID;
this.buffer = [];
}
BufferingLogger.prototype.log = function() {
this.buffer.push([ new Date(), Array.prototype.slice.call(arguments) ]);
return this;
};
BufferingLogger.prototype.clear = function() {
this.buffer = [];
return this;
};
BufferingLogger.prototype.printOutput = function(logFunction) {
if (!logFunction) { logFunction = this.logFunction; }
var uniqueID = this.uniqueID;
this.buffer.forEach(function(entry) {
var date = entry[0].toLocaleString();
var args = entry[1].slice();
var formatString = args[0];
if (formatString !== (void 0) && formatString !== null) {
formatString = '%s - %s - ' + formatString.toString();
args.splice(0, 1, formatString, date, uniqueID);
logFunction.apply(global, args);
}
});
};
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