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const {
ArrayIsArray,
ArrayPrototypeIncludes,
ArrayPrototypeJoin,
ArrayPrototypeMap,
NumberIsInteger,
NumberMAX_SAFE_INTEGER,
NumberMIN_SAFE_INTEGER,
NumberParseInt,
RegExpPrototypeTest,
String,
StringPrototypeToUpperCase,
StringPrototypeTrim,
} = primordials;
const {
hideStackFrames,
codes: {
ERR_SOCKET_BAD_PORT,
ERR_INVALID_ARG_TYPE,
ERR_INVALID_ARG_VALUE,
ERR_OUT_OF_RANGE,
ERR_UNKNOWN_SIGNAL,
}
} = require('internal/errors');
const { normalizeEncoding } = require('internal/util');
const {
isAsyncFunction,
isArrayBufferView
} = require('internal/util/types');
const { signals } = internalBinding('constants').os;
function isInt32(value) {
return value === (value | 0);
}
function isUint32(value) {
return value === (value >>> 0);
}
const octalReg = /^[0-7]+$/;
const modeDesc = 'must be a 32-bit unsigned integer or an octal string';
/**
* Parse and validate values that will be converted into mode_t (the S_*
* constants). Only valid numbers and octal strings are allowed. They could be
* converted to 32-bit unsigned integers or non-negative signed integers in the
* C++ land, but any value higher than 0o777 will result in platform-specific
* behaviors.
*
* @param {*} value Values to be validated
* @param {string} name Name of the argument
* @param {number} [def] If specified, will be returned for invalid values
* @returns {number}
*/
function parseFileMode(value, name, def) {
value ??= def;
if (typeof value === 'string') {
if (!RegExpPrototypeTest(octalReg, value)) {
throw new ERR_INVALID_ARG_VALUE(name, value, modeDesc);
}
value = NumberParseInt(value, 8);
}
validateUint32(value, name);
return value;
}
const validateInteger = hideStackFrames(
(value, name, min = NumberMIN_SAFE_INTEGER, max = NumberMAX_SAFE_INTEGER) => {
if (typeof value !== 'number')
throw new ERR_INVALID_ARG_TYPE(name, 'number', value);
if (!NumberIsInteger(value))
throw new ERR_OUT_OF_RANGE(name, 'an integer', value);
if (value < min || value > max)
throw new ERR_OUT_OF_RANGE(name, `>= ${min} && <= ${max}`, value);
}
);
const validateInt32 = hideStackFrames(
(value, name, min = -2147483648, max = 2147483647) => {
// The defaults for min and max correspond to the limits of 32-bit integers.
if (typeof value !== 'number') {
throw new ERR_INVALID_ARG_TYPE(name, 'number', value);
}
if (!NumberIsInteger(value)) {
throw new ERR_OUT_OF_RANGE(name, 'an integer', value);
}
if (value < min || value > max) {
throw new ERR_OUT_OF_RANGE(name, `>= ${min} && <= ${max}`, value);
}
}
);
const validateUint32 = hideStackFrames((value, name, positive) => {
if (typeof value !== 'number') {
throw new ERR_INVALID_ARG_TYPE(name, 'number', value);
}
if (!NumberIsInteger(value)) {
throw new ERR_OUT_OF_RANGE(name, 'an integer', value);
}
const min = positive ? 1 : 0;
// 2 ** 32 === 4294967296
const max = 4_294_967_295;
if (value < min || value > max) {
throw new ERR_OUT_OF_RANGE(name, `>= ${min} && <= ${max}`, value);
}
});
function validateString(value, name) {
if (typeof value !== 'string')
throw new ERR_INVALID_ARG_TYPE(name, 'string', value);
}
function validateNumber(value, name) {
if (typeof value !== 'number')
throw new ERR_INVALID_ARG_TYPE(name, 'number', value);
}
const validateOneOf = hideStackFrames((value, name, oneOf) => {
if (!ArrayPrototypeIncludes(oneOf, value)) {
const allowed = ArrayPrototypeJoin(
ArrayPrototypeMap(oneOf, (v) =>
(typeof v === 'string' ? `'${v}'` : String(v))),
', ');
const reason = 'must be one of: ' + allowed;
throw new ERR_INVALID_ARG_VALUE(name, value, reason);
}
});
function validateBoolean(value, name) {
if (typeof value !== 'boolean')
throw new ERR_INVALID_ARG_TYPE(name, 'boolean', value);
}
/**
* @param {unknown} value
* @param {string} name
* @param {{
* allowArray?: boolean,
* allowFunction?: boolean,
* nullable?: boolean
* }} [options]
*/
const validateObject = hideStackFrames(
(value, name, options) => {
const useDefaultOptions = options == null;
const allowArray = useDefaultOptions ? false : options.allowArray;
const allowFunction = useDefaultOptions ? false : options.allowFunction;
const nullable = useDefaultOptions ? false : options.nullable;
if ((!nullable && value === null) ||
(!allowArray && ArrayIsArray(value)) ||
(typeof value !== 'object' && (
!allowFunction || typeof value !== 'function'
))) {
throw new ERR_INVALID_ARG_TYPE(name, 'Object', value);
}
});
const validateArray = hideStackFrames((value, name, minLength = 0) => {
if (!ArrayIsArray(value)) {
throw new ERR_INVALID_ARG_TYPE(name, 'Array', value);
}
if (value.length < minLength) {
const reason = `must be longer than ${minLength}`;
throw new ERR_INVALID_ARG_VALUE(name, value, reason);
}
});
function validateSignalName(signal, name = 'signal') {
validateString(signal, name);
if (signals[signal] === undefined) {
if (signals[StringPrototypeToUpperCase(signal)] !== undefined) {
throw new ERR_UNKNOWN_SIGNAL(signal +
' (signals must use all capital letters)');
}
throw new ERR_UNKNOWN_SIGNAL(signal);
}
}
const validateBuffer = hideStackFrames((buffer, name = 'buffer') => {
if (!isArrayBufferView(buffer)) {
throw new ERR_INVALID_ARG_TYPE(name,
['Buffer', 'TypedArray', 'DataView'],
buffer);
}
});
function validateEncoding(data, encoding) {
const normalizedEncoding = normalizeEncoding(encoding);
const length = data.length;
if (normalizedEncoding === 'hex' && length % 2 !== 0) {
throw new ERR_INVALID_ARG_VALUE('encoding', encoding,
`is invalid for data of length ${length}`);
}
}
// Check that the port number is not NaN when coerced to a number,
// is an integer and that it falls within the legal range of port numbers.
function validatePort(port, name = 'Port', allowZero = true) {
if ((typeof port !== 'number' && typeof port !== 'string') ||
(typeof port === 'string' && StringPrototypeTrim(port).length === 0) ||
+port !== (+port >>> 0) ||
port > 0xFFFF ||
(port === 0 && !allowZero)) {
throw new ERR_SOCKET_BAD_PORT(name, port, allowZero);
}
return port | 0;
}
const validateAbortSignal = hideStackFrames((signal, name) => {
if (signal !== undefined &&
(signal === null ||
typeof signal !== 'object' ||
!('aborted' in signal))) {
throw new ERR_INVALID_ARG_TYPE(name, 'AbortSignal', signal);
}
});
const validateFunction = hideStackFrames((value, name) => {
if (typeof value !== 'function')
throw new ERR_INVALID_ARG_TYPE(name, 'Function', value);
});
const validatePlainFunction = hideStackFrames((value, name) => {
if (typeof value !== 'function' || isAsyncFunction(value))
throw new ERR_INVALID_ARG_TYPE(name, 'Function', value);
});
const validateUndefined = hideStackFrames((value, name) => {
if (value !== undefined)
throw new ERR_INVALID_ARG_TYPE(name, 'undefined', value);
});
function validateUnion(value, name, union) {
if (!ArrayPrototypeIncludes(union, value)) {
throw new ERR_INVALID_ARG_TYPE(name, `('${ArrayPrototypeJoin(union, '|')}')`, value);
}
}
module.exports = {
isInt32,
isUint32,
parseFileMode,
validateArray,
validateBoolean,
validateBuffer,
validateEncoding,
validateFunction,
validateInt32,
validateInteger,
validateNumber,
validateObject,
validateOneOf,
validatePlainFunction,
validatePort,
validateSignalName,
validateString,
validateUint32,
validateUndefined,
validateUnion,
validateAbortSignal,
};
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