Changed alot of things.

node_modules/verror/lib/verror.js

@@ -0,0 +1,451 @@
+/*
+ * verror.js: richer JavaScript errors
+ */
+
+var mod_assertplus = require('assert-plus');
+var mod_util = require('util');
+
+var mod_extsprintf = require('extsprintf');
+var mod_isError = require('core-util-is').isError;
+var sprintf = mod_extsprintf.sprintf;
+
+/*
+ * Public interface
+ */
+
+/* So you can 'var VError = require('verror')' */
+module.exports = VError;
+/* For compatibility */
+VError.VError = VError;
+/* Other exported classes */
+VError.SError = SError;
+VError.WError = WError;
+VError.MultiError = MultiError;
+
+/*
+ * Common function used to parse constructor arguments for VError, WError, and
+ * SError.  Named arguments to this function:
+ *
+ *     strict		force strict interpretation of sprintf arguments, even
+ *     			if the options in "argv" don't say so
+ *
+ *     argv		error's constructor arguments, which are to be
+ *     			interpreted as described in README.md.  For quick
+ *     			reference, "argv" has one of the following forms:
+ *
+ *          [ sprintf_args... ]           (argv[0] is a string)
+ *          [ cause, sprintf_args... ]    (argv[0] is an Error)
+ *          [ options, sprintf_args... ]  (argv[0] is an object)
+ *
+ * This function normalizes these forms, producing an object with the following
+ * properties:
+ *
+ *    options           equivalent to "options" in third form.  This will never
+ *    			be a direct reference to what the caller passed in
+ *    			(i.e., it may be a shallow copy), so it can be freely
+ *    			modified.
+ *
+ *    shortmessage      result of sprintf(sprintf_args), taking options.strict
+ *    			into account as described in README.md.
+ */
+function parseConstructorArguments(args)
+{
+	var argv, options, sprintf_args, shortmessage, k;
+
+	mod_assertplus.object(args, 'args');
+	mod_assertplus.bool(args.strict, 'args.strict');
+	mod_assertplus.array(args.argv, 'args.argv');
+	argv = args.argv;
+
+	/*
+	 * First, figure out which form of invocation we've been given.
+	 */
+	if (argv.length === 0) {
+		options = {};
+		sprintf_args = [];
+	} else if (mod_isError(argv[0])) {
+		options = { 'cause': argv[0] };
+		sprintf_args = argv.slice(1);
+	} else if (typeof (argv[0]) === 'object') {
+		options = {};
+		for (k in argv[0]) {
+			options[k] = argv[0][k];
+		}
+		sprintf_args = argv.slice(1);
+	} else {
+		mod_assertplus.string(argv[0],
+		    'first argument to VError, SError, or WError ' +
+		    'constructor must be a string, object, or Error');
+		options = {};
+		sprintf_args = argv;
+	}
+
+	/*
+	 * Now construct the error's message.
+	 *
+	 * extsprintf (which we invoke here with our caller's arguments in order
+	 * to construct this Error's message) is strict in its interpretation of
+	 * values to be processed by the "%s" specifier.  The value passed to
+	 * extsprintf must actually be a string or something convertible to a
+	 * String using .toString().  Passing other values (notably "null" and
+	 * "undefined") is considered a programmer error.  The assumption is
+	 * that if you actually want to print the string "null" or "undefined",
+	 * then that's easy to do that when you're calling extsprintf; on the
+	 * other hand, if you did NOT want that (i.e., there's actually a bug
+	 * where the program assumes some variable is non-null and tries to
+	 * print it, which might happen when constructing a packet or file in
+	 * some specific format), then it's better to stop immediately than
+	 * produce bogus output.
+	 *
+	 * However, sometimes the bug is only in the code calling VError, and a
+	 * programmer might prefer to have the error message contain "null" or
+	 * "undefined" rather than have the bug in the error path crash the
+	 * program (making the first bug harder to identify).  For that reason,
+	 * by default VError converts "null" or "undefined" arguments to their
+	 * string representations and passes those to extsprintf.  Programmers
+	 * desiring the strict behavior can use the SError class or pass the
+	 * "strict" option to the VError constructor.
+	 */
+	mod_assertplus.object(options);
+	if (!options.strict && !args.strict) {
+		sprintf_args = sprintf_args.map(function (a) {
+			return (a === null ? 'null' :
+			    a === undefined ? 'undefined' : a);
+		});
+	}
+
+	if (sprintf_args.length === 0) {
+		shortmessage = '';
+	} else {
+		shortmessage = sprintf.apply(null, sprintf_args);
+	}
+
+	return ({
+	    'options': options,
+	    'shortmessage': shortmessage
+	});
+}
+
+/*
+ * See README.md for reference documentation.
+ */
+function VError()
+{
+	var args, obj, parsed, cause, ctor, message, k;
+
+	args = Array.prototype.slice.call(arguments, 0);
+
+	/*
+	 * This is a regrettable pattern, but JavaScript's built-in Error class
+	 * is defined to work this way, so we allow the constructor to be called
+	 * without "new".
+	 */
+	if (!(this instanceof VError)) {
+		obj = Object.create(VError.prototype);
+		VError.apply(obj, arguments);
+		return (obj);
+	}
+
+	/*
+	 * For convenience and backwards compatibility, we support several
+	 * different calling forms.  Normalize them here.
+	 */
+	parsed = parseConstructorArguments({
+	    'argv': args,
+	    'strict': false
+	});
+
+	/*
+	 * If we've been given a name, apply it now.
+	 */
+	if (parsed.options.name) {
+		mod_assertplus.string(parsed.options.name,
+		    'error\'s "name" must be a string');
+		this.name = parsed.options.name;
+	}
+
+	/*
+	 * For debugging, we keep track of the original short message (attached
+	 * this Error particularly) separately from the complete message (which
+	 * includes the messages of our cause chain).
+	 */
+	this.jse_shortmsg = parsed.shortmessage;
+	message = parsed.shortmessage;
+
+	/*
+	 * If we've been given a cause, record a reference to it and update our
+	 * message appropriately.
+	 */
+	cause = parsed.options.cause;
+	if (cause) {
+		mod_assertplus.ok(mod_isError(cause), 'cause is not an Error');
+		this.jse_cause = cause;
+
+		if (!parsed.options.skipCauseMessage) {
+			message += ': ' + cause.message;
+		}
+	}
+
+	/*
+	 * If we've been given an object with properties, shallow-copy that
+	 * here.  We don't want to use a deep copy in case there are non-plain
+	 * objects here, but we don't want to use the original object in case
+	 * the caller modifies it later.
+	 */
+	this.jse_info = {};
+	if (parsed.options.info) {
+		for (k in parsed.options.info) {
+			this.jse_info[k] = parsed.options.info[k];
+		}
+	}
+
+	this.message = message;
+	Error.call(this, message);
+
+	if (Error.captureStackTrace) {
+		ctor = parsed.options.constructorOpt || this.constructor;
+		Error.captureStackTrace(this, ctor);
+	}
+
+	return (this);
+}
+
+mod_util.inherits(VError, Error);
+VError.prototype.name = 'VError';
+
+VError.prototype.toString = function ve_toString()
+{
+	var str = (this.hasOwnProperty('name') && this.name ||
+		this.constructor.name || this.constructor.prototype.name);
+	if (this.message)
+		str += ': ' + this.message;
+
+	return (str);
+};
+
+/*
+ * This method is provided for compatibility.  New callers should use
+ * VError.cause() instead.  That method also uses the saner `null` return value
+ * when there is no cause.
+ */
+VError.prototype.cause = function ve_cause()
+{
+	var cause = VError.cause(this);
+	return (cause === null ? undefined : cause);
+};
+
+/*
+ * Static methods
+ *
+ * These class-level methods are provided so that callers can use them on
+ * instances of Errors that are not VErrors.  New interfaces should be provided
+ * only using static methods to eliminate the class of programming mistake where
+ * people fail to check whether the Error object has the corresponding methods.
+ */
+
+VError.cause = function (err)
+{
+	mod_assertplus.ok(mod_isError(err), 'err must be an Error');
+	return (mod_isError(err.jse_cause) ? err.jse_cause : null);
+};
+
+VError.info = function (err)
+{
+	var rv, cause, k;
+
+	mod_assertplus.ok(mod_isError(err), 'err must be an Error');
+	cause = VError.cause(err);
+	if (cause !== null) {
+		rv = VError.info(cause);
+	} else {
+		rv = {};
+	}
+
+	if (typeof (err.jse_info) == 'object' && err.jse_info !== null) {
+		for (k in err.jse_info) {
+			rv[k] = err.jse_info[k];
+		}
+	}
+
+	return (rv);
+};
+
+VError.findCauseByName = function (err, name)
+{
+	var cause;
+
+	mod_assertplus.ok(mod_isError(err), 'err must be an Error');
+	mod_assertplus.string(name, 'name');
+	mod_assertplus.ok(name.length > 0, 'name cannot be empty');
+
+	for (cause = err; cause !== null; cause = VError.cause(cause)) {
+		mod_assertplus.ok(mod_isError(cause));
+		if (cause.name == name) {
+			return (cause);
+		}
+	}
+
+	return (null);
+};
+
+VError.hasCauseWithName = function (err, name)
+{
+	return (VError.findCauseByName(err, name) !== null);
+};
+
+VError.fullStack = function (err)
+{
+	mod_assertplus.ok(mod_isError(err), 'err must be an Error');
+
+	var cause = VError.cause(err);
+
+	if (cause) {
+		return (err.stack + '\ncaused by: ' + VError.fullStack(cause));
+	}
+
+	return (err.stack);
+};
+
+VError.errorFromList = function (errors)
+{
+	mod_assertplus.arrayOfObject(errors, 'errors');
+
+	if (errors.length === 0) {
+		return (null);
+	}
+
+	errors.forEach(function (e) {
+		mod_assertplus.ok(mod_isError(e));
+	});
+
+	if (errors.length == 1) {
+		return (errors[0]);
+	}
+
+	return (new MultiError(errors));
+};
+
+VError.errorForEach = function (err, func)
+{
+	mod_assertplus.ok(mod_isError(err), 'err must be an Error');
+	mod_assertplus.func(func, 'func');
+
+	if (err instanceof MultiError) {
+		err.errors().forEach(function iterError(e) { func(e); });
+	} else {
+		func(err);
+	}
+};
+
+
+/*
+ * SError is like VError, but stricter about types.  You cannot pass "null" or
+ * "undefined" as string arguments to the formatter.
+ */
+function SError()
+{
+	var args, obj, parsed, options;
+
+	args = Array.prototype.slice.call(arguments, 0);
+	if (!(this instanceof SError)) {
+		obj = Object.create(SError.prototype);
+		SError.apply(obj, arguments);
+		return (obj);
+	}
+
+	parsed = parseConstructorArguments({
+	    'argv': args,
+	    'strict': true
+	});
+
+	options = parsed.options;
+	VError.call(this, options, '%s', parsed.shortmessage);
+
+	return (this);
+}
+
+/*
+ * We don't bother setting SError.prototype.name because once constructed,
+ * SErrors are just like VErrors.
+ */
+mod_util.inherits(SError, VError);
+
+
+/*
+ * Represents a collection of errors for the purpose of consumers that generally
+ * only deal with one error.  Callers can extract the individual errors
+ * contained in this object, but may also just treat it as a normal single
+ * error, in which case a summary message will be printed.
+ */
+function MultiError(errors)
+{
+	mod_assertplus.array(errors, 'list of errors');
+	mod_assertplus.ok(errors.length > 0, 'must be at least one error');
+	this.ase_errors = errors;
+
+	VError.call(this, {
+	    'cause': errors[0]
+	}, 'first of %d error%s', errors.length, errors.length == 1 ? '' : 's');
+}
+
+mod_util.inherits(MultiError, VError);
+MultiError.prototype.name = 'MultiError';
+
+MultiError.prototype.errors = function me_errors()
+{
+	return (this.ase_errors.slice(0));
+};
+
+
+/*
+ * See README.md for reference details.
+ */
+function WError()
+{
+	var args, obj, parsed, options;
+
+	args = Array.prototype.slice.call(arguments, 0);
+	if (!(this instanceof WError)) {
+		obj = Object.create(WError.prototype);
+		WError.apply(obj, args);
+		return (obj);
+	}
+
+	parsed = parseConstructorArguments({
+	    'argv': args,
+	    'strict': false
+	});
+
+	options = parsed.options;
+	options['skipCauseMessage'] = true;
+	VError.call(this, options, '%s', parsed.shortmessage);
+
+	return (this);
+}
+
+mod_util.inherits(WError, VError);
+WError.prototype.name = 'WError';
+
+WError.prototype.toString = function we_toString()
+{
+	var str = (this.hasOwnProperty('name') && this.name ||
+		this.constructor.name || this.constructor.prototype.name);
+	if (this.message)
+		str += ': ' + this.message;
+	if (this.jse_cause && this.jse_cause.message)
+		str += '; caused by ' + this.jse_cause.toString();
+
+	return (str);
+};
+
+/*
+ * For purely historical reasons, WError's cause() function allows you to set
+ * the cause.
+ */
+WError.prototype.cause = function we_cause(c)
+{
+	if (mod_isError(c))
+		this.jse_cause = c;
+
+	return (this.jse_cause);
+};