Updated

node_modules/jsprim/lib/jsprim.js

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+/*
+ * lib/jsprim.js: utilities for primitive JavaScript types
+ */
+
+var mod_assert = require('assert-plus');
+var mod_util = require('util');
+
+var mod_extsprintf = require('extsprintf');
+var mod_verror = require('verror');
+var mod_jsonschema = require('json-schema');
+
+/*
+ * Public interface
+ */
+exports.deepCopy = deepCopy;
+exports.deepEqual = deepEqual;
+exports.isEmpty = isEmpty;
+exports.hasKey = hasKey;
+exports.forEachKey = forEachKey;
+exports.pluck = pluck;
+exports.flattenObject = flattenObject;
+exports.flattenIter = flattenIter;
+exports.validateJsonObject = validateJsonObjectJS;
+exports.validateJsonObjectJS = validateJsonObjectJS;
+exports.randElt = randElt;
+exports.extraProperties = extraProperties;
+exports.mergeObjects = mergeObjects;
+
+exports.startsWith = startsWith;
+exports.endsWith = endsWith;
+
+exports.parseInteger = parseInteger;
+
+exports.iso8601 = iso8601;
+exports.rfc1123 = rfc1123;
+exports.parseDateTime = parseDateTime;
+
+exports.hrtimediff = hrtimeDiff;
+exports.hrtimeDiff = hrtimeDiff;
+exports.hrtimeAccum = hrtimeAccum;
+exports.hrtimeAdd = hrtimeAdd;
+exports.hrtimeNanosec = hrtimeNanosec;
+exports.hrtimeMicrosec = hrtimeMicrosec;
+exports.hrtimeMillisec = hrtimeMillisec;
+
+
+/*
+ * Deep copy an acyclic *basic* Javascript object.  This only handles basic
+ * scalars (strings, numbers, booleans) and arbitrarily deep arrays and objects
+ * containing these.  This does *not* handle instances of other classes.
+ */
+function deepCopy(obj)
+{
+	var ret, key;
+	var marker = '__deepCopy';
+
+	if (obj && obj[marker])
+		throw (new Error('attempted deep copy of cyclic object'));
+
+	if (obj && obj.constructor == Object) {
+		ret = {};
+		obj[marker] = true;
+
+		for (key in obj) {
+			if (key == marker)
+				continue;
+
+			ret[key] = deepCopy(obj[key]);
+		}
+
+		delete (obj[marker]);
+		return (ret);
+	}
+
+	if (obj && obj.constructor == Array) {
+		ret = [];
+		obj[marker] = true;
+
+		for (key = 0; key < obj.length; key++)
+			ret.push(deepCopy(obj[key]));
+
+		delete (obj[marker]);
+		return (ret);
+	}
+
+	/*
+	 * It must be a primitive type -- just return it.
+	 */
+	return (obj);
+}
+
+function deepEqual(obj1, obj2)
+{
+	if (typeof (obj1) != typeof (obj2))
+		return (false);
+
+	if (obj1 === null || obj2 === null || typeof (obj1) != 'object')
+		return (obj1 === obj2);
+
+	if (obj1.constructor != obj2.constructor)
+		return (false);
+
+	var k;
+	for (k in obj1) {
+		if (!obj2.hasOwnProperty(k))
+			return (false);
+
+		if (!deepEqual(obj1[k], obj2[k]))
+			return (false);
+	}
+
+	for (k in obj2) {
+		if (!obj1.hasOwnProperty(k))
+			return (false);
+	}
+
+	return (true);
+}
+
+function isEmpty(obj)
+{
+	var key;
+	for (key in obj)
+		return (false);
+	return (true);
+}
+
+function hasKey(obj, key)
+{
+	mod_assert.equal(typeof (key), 'string');
+	return (Object.prototype.hasOwnProperty.call(obj, key));
+}
+
+function forEachKey(obj, callback)
+{
+	for (var key in obj) {
+		if (hasKey(obj, key)) {
+			callback(key, obj[key]);
+		}
+	}
+}
+
+function pluck(obj, key)
+{
+	mod_assert.equal(typeof (key), 'string');
+	return (pluckv(obj, key));
+}
+
+function pluckv(obj, key)
+{
+	if (obj === null || typeof (obj) !== 'object')
+		return (undefined);
+
+	if (obj.hasOwnProperty(key))
+		return (obj[key]);
+
+	var i = key.indexOf('.');
+	if (i == -1)
+		return (undefined);
+
+	var key1 = key.substr(0, i);
+	if (!obj.hasOwnProperty(key1))
+		return (undefined);
+
+	return (pluckv(obj[key1], key.substr(i + 1)));
+}
+
+/*
+ * Invoke callback(row) for each entry in the array that would be returned by
+ * flattenObject(data, depth).  This is just like flattenObject(data,
+ * depth).forEach(callback), except that the intermediate array is never
+ * created.
+ */
+function flattenIter(data, depth, callback)
+{
+	doFlattenIter(data, depth, [], callback);
+}
+
+function doFlattenIter(data, depth, accum, callback)
+{
+	var each;
+	var key;
+
+	if (depth === 0) {
+		each = accum.slice(0);
+		each.push(data);
+		callback(each);
+		return;
+	}
+
+	mod_assert.ok(data !== null);
+	mod_assert.equal(typeof (data), 'object');
+	mod_assert.equal(typeof (depth), 'number');
+	mod_assert.ok(depth >= 0);
+
+	for (key in data) {
+		each = accum.slice(0);
+		each.push(key);
+		doFlattenIter(data[key], depth - 1, each, callback);
+	}
+}
+
+function flattenObject(data, depth)
+{
+	if (depth === 0)
+		return ([ data ]);
+
+	mod_assert.ok(data !== null);
+	mod_assert.equal(typeof (data), 'object');
+	mod_assert.equal(typeof (depth), 'number');
+	mod_assert.ok(depth >= 0);
+
+	var rv = [];
+	var key;
+
+	for (key in data) {
+		flattenObject(data[key], depth - 1).forEach(function (p) {
+			rv.push([ key ].concat(p));
+		});
+	}
+
+	return (rv);
+}
+
+function startsWith(str, prefix)
+{
+	return (str.substr(0, prefix.length) == prefix);
+}
+
+function endsWith(str, suffix)
+{
+	return (str.substr(
+	    str.length - suffix.length, suffix.length) == suffix);
+}
+
+function iso8601(d)
+{
+	if (typeof (d) == 'number')
+		d = new Date(d);
+	mod_assert.ok(d.constructor === Date);
+	return (mod_extsprintf.sprintf('%4d-%02d-%02dT%02d:%02d:%02d.%03dZ',
+	    d.getUTCFullYear(), d.getUTCMonth() + 1, d.getUTCDate(),
+	    d.getUTCHours(), d.getUTCMinutes(), d.getUTCSeconds(),
+	    d.getUTCMilliseconds()));
+}
+
+var RFC1123_MONTHS = [
+    'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
+    'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
+var RFC1123_DAYS = [
+    'Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];
+
+function rfc1123(date) {
+	return (mod_extsprintf.sprintf('%s, %02d %s %04d %02d:%02d:%02d GMT',
+	    RFC1123_DAYS[date.getUTCDay()], date.getUTCDate(),
+	    RFC1123_MONTHS[date.getUTCMonth()], date.getUTCFullYear(),
+	    date.getUTCHours(), date.getUTCMinutes(),
+	    date.getUTCSeconds()));
+}
+
+/*
+ * Parses a date expressed as a string, as either a number of milliseconds since
+ * the epoch or any string format that Date accepts, giving preference to the
+ * former where these two sets overlap (e.g., small numbers).
+ */
+function parseDateTime(str)
+{
+	/*
+	 * This is irritatingly implicit, but significantly more concise than
+	 * alternatives.  The "+str" will convert a string containing only a
+	 * number directly to a Number, or NaN for other strings.  Thus, if the
+	 * conversion succeeds, we use it (this is the milliseconds-since-epoch
+	 * case).  Otherwise, we pass the string directly to the Date
+	 * constructor to parse.
+	 */
+	var numeric = +str;
+	if (!isNaN(numeric)) {
+		return (new Date(numeric));
+	} else {
+		return (new Date(str));
+	}
+}
+
+
+/*
+ * Number.*_SAFE_INTEGER isn't present before node v0.12, so we hardcode
+ * the ES6 definitions here, while allowing for them to someday be higher.
+ */
+var MAX_SAFE_INTEGER = Number.MAX_SAFE_INTEGER || 9007199254740991;
+var MIN_SAFE_INTEGER = Number.MIN_SAFE_INTEGER || -9007199254740991;
+
+
+/*
+ * Default options for parseInteger().
+ */
+var PI_DEFAULTS = {
+	base: 10,
+	allowSign: true,
+	allowPrefix: false,
+	allowTrailing: false,
+	allowImprecise: false,
+	trimWhitespace: false,
+	leadingZeroIsOctal: false
+};
+
+var CP_0 = 0x30;
+var CP_9 = 0x39;
+
+var CP_A = 0x41;
+var CP_B = 0x42;
+var CP_O = 0x4f;
+var CP_T = 0x54;
+var CP_X = 0x58;
+var CP_Z = 0x5a;
+
+var CP_a = 0x61;
+var CP_b = 0x62;
+var CP_o = 0x6f;
+var CP_t = 0x74;
+var CP_x = 0x78;
+var CP_z = 0x7a;
+
+var PI_CONV_DEC = 0x30;
+var PI_CONV_UC = 0x37;
+var PI_CONV_LC = 0x57;
+
+
+/*
+ * A stricter version of parseInt() that provides options for changing what
+ * is an acceptable string (for example, disallowing trailing characters).
+ */
+function parseInteger(str, uopts)
+{
+	mod_assert.string(str, 'str');
+	mod_assert.optionalObject(uopts, 'options');
+
+	var baseOverride = false;
+	var options = PI_DEFAULTS;
+
+	if (uopts) {
+		baseOverride = hasKey(uopts, 'base');
+		options = mergeObjects(options, uopts);
+		mod_assert.number(options.base, 'options.base');
+		mod_assert.ok(options.base >= 2, 'options.base >= 2');
+		mod_assert.ok(options.base <= 36, 'options.base <= 36');
+		mod_assert.bool(options.allowSign, 'options.allowSign');
+		mod_assert.bool(options.allowPrefix, 'options.allowPrefix');
+		mod_assert.bool(options.allowTrailing,
+		    'options.allowTrailing');
+		mod_assert.bool(options.allowImprecise,
+		    'options.allowImprecise');
+		mod_assert.bool(options.trimWhitespace,
+		    'options.trimWhitespace');
+		mod_assert.bool(options.leadingZeroIsOctal,
+		    'options.leadingZeroIsOctal');
+
+		if (options.leadingZeroIsOctal) {
+			mod_assert.ok(!baseOverride,
+			    '"base" and "leadingZeroIsOctal" are ' +
+			    'mutually exclusive');
+		}
+	}
+
+	var c;
+	var pbase = -1;
+	var base = options.base;
+	var start;
+	var mult = 1;
+	var value = 0;
+	var idx = 0;
+	var len = str.length;
+
+	/* Trim any whitespace on the left side. */
+	if (options.trimWhitespace) {
+		while (idx < len && isSpace(str.charCodeAt(idx))) {
+			++idx;
+		}
+	}
+
+	/* Check the number for a leading sign. */
+	if (options.allowSign) {
+		if (str[idx] === '-') {
+			idx += 1;
+			mult = -1;
+		} else if (str[idx] === '+') {
+			idx += 1;
+		}
+	}
+
+	/* Parse the base-indicating prefix if there is one. */
+	if (str[idx] === '0') {
+		if (options.allowPrefix) {
+			pbase = prefixToBase(str.charCodeAt(idx + 1));
+			if (pbase !== -1 && (!baseOverride || pbase === base)) {
+				base = pbase;
+				idx += 2;
+			}
+		}
+
+		if (pbase === -1 && options.leadingZeroIsOctal) {
+			base = 8;
+		}
+	}
+
+	/* Parse the actual digits. */
+	for (start = idx; idx < len; ++idx) {
+		c = translateDigit(str.charCodeAt(idx));
+		if (c !== -1 && c < base) {
+			value *= base;
+			value += c;
+		} else {
+			break;
+		}
+	}
+
+	/* If we didn't parse any digits, we have an invalid number. */
+	if (start === idx) {
+		return (new Error('invalid number: ' + JSON.stringify(str)));
+	}
+
+	/* Trim any whitespace on the right side. */
+	if (options.trimWhitespace) {
+		while (idx < len && isSpace(str.charCodeAt(idx))) {
+			++idx;
+		}
+	}
+
+	/* Check for trailing characters. */
+	if (idx < len && !options.allowTrailing) {
+		return (new Error('trailing characters after number: ' +
+		    JSON.stringify(str.slice(idx))));
+	}
+
+	/* If our value is 0, we return now, to avoid returning -0. */
+	if (value === 0) {
+		return (0);
+	}
+
+	/* Calculate our final value. */
+	var result = value * mult;
+
+	/*
+	 * If the string represents a value that cannot be precisely represented
+	 * by JavaScript, then we want to check that:
+	 *
+	 * - We never increased the value past MAX_SAFE_INTEGER
+	 * - We don't make the result negative and below MIN_SAFE_INTEGER
+	 *
+	 * Because we only ever increment the value during parsing, there's no
+	 * chance of moving past MAX_SAFE_INTEGER and then dropping below it
+	 * again, losing precision in the process. This means that we only need
+	 * to do our checks here, at the end.
+	 */
+	if (!options.allowImprecise &&
+	    (value > MAX_SAFE_INTEGER || result < MIN_SAFE_INTEGER)) {
+		return (new Error('number is outside of the supported range: ' +
+		    JSON.stringify(str.slice(start, idx))));
+	}
+
+	return (result);
+}
+
+
+/*
+ * Interpret a character code as a base-36 digit.
+ */
+function translateDigit(d)
+{
+	if (d >= CP_0 && d <= CP_9) {
+		/* '0' to '9' -> 0 to 9 */
+		return (d - PI_CONV_DEC);
+	} else if (d >= CP_A && d <= CP_Z) {
+		/* 'A' - 'Z' -> 10 to 35 */
+		return (d - PI_CONV_UC);
+	} else if (d >= CP_a && d <= CP_z) {
+		/* 'a' - 'z' -> 10 to 35 */
+		return (d - PI_CONV_LC);
+	} else {
+		/* Invalid character code */
+		return (-1);
+	}
+}
+
+
+/*
+ * Test if a value matches the ECMAScript definition of trimmable whitespace.
+ */
+function isSpace(c)
+{
+	return (c === 0x20) ||
+	    (c >= 0x0009 && c <= 0x000d) ||
+	    (c === 0x00a0) ||
+	    (c === 0x1680) ||
+	    (c === 0x180e) ||
+	    (c >= 0x2000 && c <= 0x200a) ||
+	    (c === 0x2028) ||
+	    (c === 0x2029) ||
+	    (c === 0x202f) ||
+	    (c === 0x205f) ||
+	    (c === 0x3000) ||
+	    (c === 0xfeff);
+}
+
+
+/*
+ * Determine which base a character indicates (e.g., 'x' indicates hex).
+ */
+function prefixToBase(c)
+{
+	if (c === CP_b || c === CP_B) {
+		/* 0b/0B (binary) */
+		return (2);
+	} else if (c === CP_o || c === CP_O) {
+		/* 0o/0O (octal) */
+		return (8);
+	} else if (c === CP_t || c === CP_T) {
+		/* 0t/0T (decimal) */
+		return (10);
+	} else if (c === CP_x || c === CP_X) {
+		/* 0x/0X (hexadecimal) */
+		return (16);
+	} else {
+		/* Not a meaningful character */
+		return (-1);
+	}
+}
+
+
+function validateJsonObjectJS(schema, input)
+{
+	var report = mod_jsonschema.validate(input, schema);
+
+	if (report.errors.length === 0)
+		return (null);
+
+	/* Currently, we only do anything useful with the first error. */
+	var error = report.errors[0];
+
+	/* The failed property is given by a URI with an irrelevant prefix. */
+	var propname = error['property'];
+	var reason = error['message'].toLowerCase();
+	var i, j;
+
+	/*
+	 * There's at least one case where the property error message is
+	 * confusing at best.  We work around this here.
+	 */
+	if ((i = reason.indexOf('the property ')) != -1 &&
+	    (j = reason.indexOf(' is not defined in the schema and the ' +
+	    'schema does not allow additional properties')) != -1) {
+		i += 'the property '.length;
+		if (propname === '')
+			propname = reason.substr(i, j - i);
+		else
+			propname = propname + '.' + reason.substr(i, j - i);
+
+		reason = 'unsupported property';
+	}
+
+	var rv = new mod_verror.VError('property "%s": %s', propname, reason);
+	rv.jsv_details = error;
+	return (rv);
+}
+
+function randElt(arr)
+{
+	mod_assert.ok(Array.isArray(arr) && arr.length > 0,
+	    'randElt argument must be a non-empty array');
+
+	return (arr[Math.floor(Math.random() * arr.length)]);
+}
+
+function assertHrtime(a)
+{
+	mod_assert.ok(a[0] >= 0 && a[1] >= 0,
+	    'negative numbers not allowed in hrtimes');
+	mod_assert.ok(a[1] < 1e9, 'nanoseconds column overflow');
+}
+
+/*
+ * Compute the time elapsed between hrtime readings A and B, where A is later
+ * than B.  hrtime readings come from Node's process.hrtime().  There is no
+ * defined way to represent negative deltas, so it's illegal to diff B from A
+ * where the time denoted by B is later than the time denoted by A.  If this
+ * becomes valuable, we can define a representation and extend the
+ * implementation to support it.
+ */
+function hrtimeDiff(a, b)
+{
+	assertHrtime(a);
+	assertHrtime(b);
+	mod_assert.ok(a[0] > b[0] || (a[0] == b[0] && a[1] >= b[1]),
+	    'negative differences not allowed');
+
+	var rv = [ a[0] - b[0], 0 ];
+
+	if (a[1] >= b[1]) {
+		rv[1] = a[1] - b[1];
+	} else {
+		rv[0]--;
+		rv[1] = 1e9 - (b[1] - a[1]);
+	}
+
+	return (rv);
+}
+
+/*
+ * Convert a hrtime reading from the array format returned by Node's
+ * process.hrtime() into a scalar number of nanoseconds.
+ */
+function hrtimeNanosec(a)
+{
+	assertHrtime(a);
+
+	return (Math.floor(a[0] * 1e9 + a[1]));
+}
+
+/*
+ * Convert a hrtime reading from the array format returned by Node's
+ * process.hrtime() into a scalar number of microseconds.
+ */
+function hrtimeMicrosec(a)
+{
+	assertHrtime(a);
+
+	return (Math.floor(a[0] * 1e6 + a[1] / 1e3));
+}
+
+/*
+ * Convert a hrtime reading from the array format returned by Node's
+ * process.hrtime() into a scalar number of milliseconds.
+ */
+function hrtimeMillisec(a)
+{
+	assertHrtime(a);
+
+	return (Math.floor(a[0] * 1e3 + a[1] / 1e6));
+}
+
+/*
+ * Add two hrtime readings A and B, overwriting A with the result of the
+ * addition.  This function is useful for accumulating several hrtime intervals
+ * into a counter.  Returns A.
+ */
+function hrtimeAccum(a, b)
+{
+	assertHrtime(a);
+	assertHrtime(b);
+
+	/*
+	 * Accumulate the nanosecond component.
+	 */
+	a[1] += b[1];
+	if (a[1] >= 1e9) {
+		/*
+		 * The nanosecond component overflowed, so carry to the seconds
+		 * field.
+		 */
+		a[0]++;
+		a[1] -= 1e9;
+	}
+
+	/*
+	 * Accumulate the seconds component.
+	 */
+	a[0] += b[0];
+
+	return (a);
+}
+
+/*
+ * Add two hrtime readings A and B, returning the result as a new hrtime array.
+ * Does not modify either input argument.
+ */
+function hrtimeAdd(a, b)
+{
+	assertHrtime(a);
+
+	var rv = [ a[0], a[1] ];
+
+	return (hrtimeAccum(rv, b));
+}
+
+
+/*
+ * Check an object for unexpected properties.  Accepts the object to check, and
+ * an array of allowed property names (strings).  Returns an array of key names
+ * that were found on the object, but did not appear in the list of allowed
+ * properties.  If no properties were found, the returned array will be of
+ * zero length.
+ */
+function extraProperties(obj, allowed)
+{
+	mod_assert.ok(typeof (obj) === 'object' && obj !== null,
+	    'obj argument must be a non-null object');
+	mod_assert.ok(Array.isArray(allowed),
+	    'allowed argument must be an array of strings');
+	for (var i = 0; i < allowed.length; i++) {
+		mod_assert.ok(typeof (allowed[i]) === 'string',
+		    'allowed argument must be an array of strings');
+	}
+
+	return (Object.keys(obj).filter(function (key) {
+		return (allowed.indexOf(key) === -1);
+	}));
+}
+
+/*
+ * Given three sets of properties "provided" (may be undefined), "overrides"
+ * (required), and "defaults" (may be undefined), construct an object containing
+ * the union of these sets with "overrides" overriding "provided", and
+ * "provided" overriding "defaults".  None of the input objects are modified.
+ */
+function mergeObjects(provided, overrides, defaults)
+{
+	var rv, k;
+
+	rv = {};
+	if (defaults) {
+		for (k in defaults)
+			rv[k] = defaults[k];
+	}
+
+	if (provided) {
+		for (k in provided)
+			rv[k] = provided[k];
+	}
+
+	if (overrides) {
+		for (k in overrides)
+			rv[k] = overrides[k];
+	}
+
+	return (rv);
+}