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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
var writeError = process.binding('stdio').writeError;
// 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;
}
exports.log = function() {
process.stdout.write(format.apply(this, arguments) + '\n');
};
exports.info = exports.log;
exports.warn = function() {
writeError(format.apply(this, arguments) + '\n');
};
exports.error = exports.warn;
exports.dir = function(object) {
var util = require('util');
process.stdout.write(util.inspect(object) + '\n');
};
var times = {};
exports.time = function(label) {
times[label] = Date.now();
};
exports.timeEnd = function(label) {
var duration = Date.now() - times[label];
exports.log('%s: %dms', label, duration);
};
exports.trace = function(label) {
// TODO probably can to do this better with V8's debug object once that is
// exposed.
var err = new Error;
err.name = 'Trace';
err.message = label || '';
Error.captureStackTrace(err, arguments.callee);
console.error(err.stack);
};
exports.assert = function(expression) {
if (!expression) {
var arr = Array.prototype.slice.call(arguments, 1);
require('assert').ok(false, format.apply(this, arr));
}
};
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