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var events = require('events');
exports.print = function () {
for (var i = 0, len = arguments.length; i < len; ++i) {
process.stdio.write(arguments[i]);
}
};
exports.puts = function () {
for (var i = 0, len = arguments.length; i < len; ++i) {
process.stdio.write(arguments[i] + '\n');
}
};
exports.debug = function (x) {
process.stdio.writeError("DEBUG: " + x + "\n");
};
exports.error = function (x) {
for (var i = 0, len = arguments.length; i < len; ++i) {
process.stdio.writeError(arguments[i] + '\n');
}
};
/**
* Echos the value of a value. Trys to print the value out
* in the best way possible given the different types.
*
* @param {Object} value The object to print out
* @param {Boolean} showHidden Flag that shows hidden (not enumerable) properties of objects.
*/
exports.inspect = function (obj, showHidden) {
var seen = [];
function format(value) {
// Primitive types cannot have properties
switch (typeof value) {
case 'undefined': return 'undefined';
case 'string': return JSON.stringify(value);
case 'number': return '' + value;
case 'boolean': return '' + value;
}
// For some reason typeof null is "object", so special case here.
if (value === null) {
return 'null';
}
// Look up the keys of the object.
var keys = showHidden ? Object.getOwnPropertyNames(value).map(function (key) {
return '' + key;
}) : Object.keys(value);
var visible_keys = Object.keys(value);
// Functions without properties can be shortcutted.
if (typeof value === 'function' && keys.length === 0) {
if (value instanceof RegExp) {
return '' + value;
} else {
return '[Function]';
}
}
// Dates without properties can be shortcutted
if (value instanceof Date && keys.length === 0) {
return value.toUTCString();
}
var base, type, braces;
// Determine the object type
if (value instanceof Array) {
type = 'Array';
braces = ["[", "]"];
} else {
type = 'Object';
braces = ["{", "}"];
}
// Make functions say that they are functions
if (typeof value === 'function') {
base = (value instanceof RegExp) ? ' ' + value : ' [Function]';
} else {
base = "";
}
// Make dates with properties first say the date
if (value instanceof Date) {
base = ' ' + value.toUTCString();
}
seen.push(value);
if (keys.length === 0) {
return braces[0] + base + braces[1];
}
return braces[0] + base + "\n" + (keys.map(function (key) {
var name, str;
if (value.__lookupGetter__) {
if (value.__lookupGetter__(key)) {
if (value.__lookupSetter__(key)) {
str = "[Getter/Setter]";
} else {
str = "[Getter]";
}
} else {
if (value.__lookupSetter__(key)) {
str = "[Setter]";
}
}
}
if (visible_keys.indexOf(key) < 0) {
name = "[" + key + "]";
}
if (!str) {
if (seen.indexOf(value[key]) < 0) {
str = format(value[key]);
} else {
str = '[Circular]';
}
}
if (typeof name === 'undefined') {
if (type === 'Array' && key.match(/^\d+$/)) {
return str;
}
name = JSON.stringify('' + key);
}
return name + ": " + str;
}).join(",\n")).split("\n").map(function (line) {
return ' ' + line;
}).join('\n') + "\n" + braces[1];
}
return format(obj);
};
exports.p = function () {
for (var i = 0, len = arguments.length; i < len; ++i) {
exports.error(exports.inspect(arguments[i]));
}
};
exports.exec = function (command, callback) {
var child = process.createChildProcess("/bin/sh", ["-c", command]);
var stdout = "";
var stderr = "";
child.addListener("output", function (chunk) {
if (chunk) stdout += chunk;
});
child.addListener("error", function (chunk) {
if (chunk) stderr += chunk;
});
child.addListener("exit", function (code) {
if (code == 0) {
if (callback) callback(null, stdout, stderr);
} else {
var e = new Error("Command failed: " + stderr);
e.code = code;
if (callback) callback(e, stdout, stderr);
}
});
};
/**
* Inherit the prototype methods from one constructor into another.
*
* The Function.prototype.inherits from lang.js rewritten as a standalone
* function (not on Function.prototype). NOTE: If this file is to be loaded
* during bootstrapping this function needs to be revritten using some native
* functions as prototype setup using normal JavaScript does not work as
* expected during bootstrapping (see mirror.js in r114903).
*
* @param {function} ctor Constructor function which needs to inherit the
* prototype
* @param {function} superCtor Constructor function to inherit prototype from
*/
exports.inherits = process.inherits;
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