knowledge/node_modules/minio/dist/esm/internal/helper.mjs

/*
 * MinIO Javascript Library for Amazon S3 Compatible Cloud Storage, (C) 2015 MinIO, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import * as crypto from "crypto";
import * as stream from "stream";
import { XMLParser } from 'fast-xml-parser';
import ipaddr from 'ipaddr.js';
import _ from 'lodash';
import * as mime from 'mime-types';
import { fsp, fstat } from "./async.mjs";
import { ENCRYPTION_TYPES } from "./type.mjs";
const MetaDataHeaderPrefix = 'x-amz-meta-';
export function hashBinary(buf, enableSHA256) {
  let sha256sum = '';
  if (enableSHA256) {
    sha256sum = crypto.createHash('sha256').update(buf).digest('hex');
  }
  const md5sum = crypto.createHash('md5').update(buf).digest('base64');
  return {
    md5sum,
    sha256sum
  };
}

// S3 percent-encodes some extra non-standard characters in a URI . So comply with S3.
const encodeAsHex = c => `%${c.charCodeAt(0).toString(16).toUpperCase()}`;
export function uriEscape(uriStr) {
  return encodeURIComponent(uriStr).replace(/[!'()*]/g, encodeAsHex);
}
export function uriResourceEscape(string) {
  return uriEscape(string).replace(/%2F/g, '/');
}
export function getScope(region, date, serviceName = 's3') {
  return `${makeDateShort(date)}/${region}/${serviceName}/aws4_request`;
}

/**
 * isAmazonEndpoint - true if endpoint is 's3.amazonaws.com' or 's3.cn-north-1.amazonaws.com.cn'
 */
export function isAmazonEndpoint(endpoint) {
  return endpoint === 's3.amazonaws.com' || endpoint === 's3.cn-north-1.amazonaws.com.cn';
}

/**
 * isVirtualHostStyle - verify if bucket name is support with virtual
 * hosts. bucketNames with periods should be always treated as path
 * style if the protocol is 'https:', this is due to SSL wildcard
 * limitation. For all other buckets and Amazon S3 endpoint we will
 * default to virtual host style.
 */
export function isVirtualHostStyle(endpoint, protocol, bucket, pathStyle) {
  if (protocol === 'https:' && bucket.includes('.')) {
    return false;
  }
  return isAmazonEndpoint(endpoint) || !pathStyle;
}
export function isValidIP(ip) {
  return ipaddr.isValid(ip);
}

/**
 * @returns if endpoint is valid domain.
 */
export function isValidEndpoint(endpoint) {
  return isValidDomain(endpoint) || isValidIP(endpoint);
}

/**
 * @returns if input host is a valid domain.
 */
export function isValidDomain(host) {
  if (!isString(host)) {
    return false;
  }
  // See RFC 1035, RFC 3696.
  if (host.length === 0 || host.length > 255) {
    return false;
  }
  // Host cannot start or end with a '-'
  if (host[0] === '-' || host.slice(-1) === '-') {
    return false;
  }
  // Host cannot start or end with a '_'
  if (host[0] === '_' || host.slice(-1) === '_') {
    return false;
  }
  // Host cannot start with a '.'
  if (host[0] === '.') {
    return false;
  }
  const nonAlphaNumerics = '`~!@#$%^&*()+={}[]|\\"\';:><?/';
  // All non alphanumeric characters are invalid.
  for (const char of nonAlphaNumerics) {
    if (host.includes(char)) {
      return false;
    }
  }
  // No need to regexp match, since the list is non-exhaustive.
  // We let it be valid and fail later.
  return true;
}

/**
 * Probes contentType using file extensions.
 *
 * @example
 * ```
 * // return 'image/png'
 * probeContentType('file.png')
 * ```
 */
export function probeContentType(path) {
  let contentType = mime.lookup(path);
  if (!contentType) {
    contentType = 'application/octet-stream';
  }
  return contentType;
}

/**
 * is input port valid.
 */
export function isValidPort(port) {
  // Convert string port to number if needed
  const portNum = typeof port === 'string' ? parseInt(port, 10) : port;

  // verify if port is a valid number
  if (!isNumber(portNum) || isNaN(portNum)) {
    return false;
  }

  // port `0` is valid and special case
  return 0 <= portNum && portNum <= 65535;
}
export function isValidBucketName(bucket) {
  if (!isString(bucket)) {
    return false;
  }

  // bucket length should be less than and no more than 63
  // characters long.
  if (bucket.length < 3 || bucket.length > 63) {
    return false;
  }
  // bucket with successive periods is invalid.
  if (bucket.includes('..')) {
    return false;
  }
  // bucket cannot have ip address style.
  if (/[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+/.test(bucket)) {
    return false;
  }
  // bucket should begin with alphabet/number and end with alphabet/number,
  // with alphabet/number/.- in the middle.
  if (/^[a-z0-9][a-z0-9.-]+[a-z0-9]$/.test(bucket)) {
    return true;
  }
  return false;
}

/**
 * check if objectName is a valid object name
 */
export function isValidObjectName(objectName) {
  if (!isValidPrefix(objectName)) {
    return false;
  }
  return objectName.length !== 0;
}

/**
 * check if prefix is valid
 */
export function isValidPrefix(prefix) {
  if (!isString(prefix)) {
    return false;
  }
  if (prefix.length > 1024) {
    return false;
  }
  return true;
}

/**
 * check if typeof arg number
 */
export function isNumber(arg) {
  return typeof arg === 'number';
}

// eslint-disable-next-line @typescript-eslint/no-explicit-any

/**
 * check if typeof arg function
 */
export function isFunction(arg) {
  return typeof arg === 'function';
}

/**
 * check if typeof arg string
 */
export function isString(arg) {
  return typeof arg === 'string';
}

/**
 * check if typeof arg object
 */
export function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}
/**
 * check if typeof arg is plain object
 */
export function isPlainObject(arg) {
  return Object.prototype.toString.call(arg) === '[object Object]';
}
/**
 * check if object is readable stream
 */
export function isReadableStream(arg) {
  // eslint-disable-next-line @typescript-eslint/unbound-method
  return isObject(arg) && isFunction(arg._read);
}

/**
 * check if arg is boolean
 */
export function isBoolean(arg) {
  return typeof arg === 'boolean';
}
export function isEmpty(o) {
  return _.isEmpty(o);
}
export function isEmptyObject(o) {
  return Object.values(o).filter(x => x !== undefined).length !== 0;
}
export function isDefined(o) {
  return o !== null && o !== undefined;
}

/**
 * check if arg is a valid date
 */
export function isValidDate(arg) {
  // @ts-expect-error checknew Date(Math.NaN)
  return arg instanceof Date && !isNaN(arg);
}

/**
 * Create a Date string with format: 'YYYYMMDDTHHmmss' + Z
 */
export function makeDateLong(date) {
  date = date || new Date();

  // Gives format like: '2017-08-07T16:28:59.889Z'
  const s = date.toISOString();
  return s.slice(0, 4) + s.slice(5, 7) + s.slice(8, 13) + s.slice(14, 16) + s.slice(17, 19) + 'Z';
}

/**
 * Create a Date string with format: 'YYYYMMDD'
 */
export function makeDateShort(date) {
  date = date || new Date();

  // Gives format like: '2017-08-07T16:28:59.889Z'
  const s = date.toISOString();
  return s.slice(0, 4) + s.slice(5, 7) + s.slice(8, 10);
}

/**
 * pipesetup sets up pipe() from left to right os streams array
 * pipesetup will also make sure that error emitted at any of the upstream Stream
 * will be emitted at the last stream. This makes error handling simple
 */
export function pipesetup(...streams) {
  // @ts-expect-error ts can't narrow this
  return streams.reduce((src, dst) => {
    src.on('error', err => dst.emit('error', err));
    return src.pipe(dst);
  });
}

/**
 * return a Readable stream that emits data
 */
export function readableStream(data) {
  const s = new stream.Readable();
  s._read = () => {};
  s.push(data);
  s.push(null);
  return s;
}

/**
 * Process metadata to insert appropriate value to `content-type` attribute
 */
export function insertContentType(metaData, filePath) {
  // check if content-type attribute present in metaData
  for (const key in metaData) {
    if (key.toLowerCase() === 'content-type') {
      return metaData;
    }
  }

  // if `content-type` attribute is not present in metadata, then infer it from the extension in filePath
  return {
    ...metaData,
    'content-type': probeContentType(filePath)
  };
}

/**
 * Function prepends metadata with the appropriate prefix if it is not already on
 */
export function prependXAMZMeta(metaData) {
  if (!metaData) {
    return {};
  }
  return _.mapKeys(metaData, (value, key) => {
    if (isAmzHeader(key) || isSupportedHeader(key) || isStorageClassHeader(key)) {
      return key;
    }
    return MetaDataHeaderPrefix + key;
  });
}

/**
 * Checks if it is a valid header according to the AmazonS3 API
 */
export function isAmzHeader(key) {
  const temp = key.toLowerCase();
  return temp.startsWith(MetaDataHeaderPrefix) || temp === 'x-amz-acl' || temp.startsWith('x-amz-server-side-encryption-') || temp === 'x-amz-server-side-encryption';
}

/**
 * Checks if it is a supported Header
 */
export function isSupportedHeader(key) {
  const supported_headers = ['content-type', 'cache-control', 'content-encoding', 'content-disposition', 'content-language', 'x-amz-website-redirect-location', 'if-none-match', 'if-match'];
  return supported_headers.includes(key.toLowerCase());
}

/**
 * Checks if it is a storage header
 */
export function isStorageClassHeader(key) {
  return key.toLowerCase() === 'x-amz-storage-class';
}
export function extractMetadata(headers) {
  return _.mapKeys(_.pickBy(headers, (value, key) => isSupportedHeader(key) || isStorageClassHeader(key) || isAmzHeader(key)), (value, key) => {
    const lower = key.toLowerCase();
    if (lower.startsWith(MetaDataHeaderPrefix)) {
      return lower.slice(MetaDataHeaderPrefix.length);
    }
    return key;
  });
}
export function getVersionId(headers = {}) {
  return headers['x-amz-version-id'] || null;
}
export function getSourceVersionId(headers = {}) {
  return headers['x-amz-copy-source-version-id'] || null;
}
export function sanitizeETag(etag = '') {
  const replaceChars = {
    '"': '',
    '&quot;': '',
    '&#34;': '',
    '&QUOT;': '',
    '&#x00022': ''
  };
  return etag.replace(/^("|&quot;|&#34;)|("|&quot;|&#34;)$/g, m => replaceChars[m]);
}
export function toMd5(payload) {
  // use string from browser and buffer from nodejs
  // browser support is tested only against minio server
  return crypto.createHash('md5').update(Buffer.from(payload)).digest().toString('base64');
}
export function toSha256(payload) {
  return crypto.createHash('sha256').update(payload).digest('hex');
}

/**
 * toArray returns a single element array with param being the element,
 * if param is just a string, and returns 'param' back if it is an array
 * So, it makes sure param is always an array
 */
export function toArray(param) {
  if (!Array.isArray(param)) {
    return [param];
  }
  return param;
}
export function sanitizeObjectKey(objectName) {
  // + symbol characters are not decoded as spaces in JS. so replace them first and decode to get the correct result.
  const asStrName = (objectName ? objectName.toString() : '').replace(/\+/g, ' ');
  return decodeURIComponent(asStrName);
}
export function sanitizeSize(size) {
  return size ? Number.parseInt(size) : undefined;
}
export const PART_CONSTRAINTS = {
  // absMinPartSize - absolute minimum part size (5 MiB)
  ABS_MIN_PART_SIZE: 1024 * 1024 * 5,
  // MIN_PART_SIZE - minimum part size 16MiB per object after which
  MIN_PART_SIZE: 1024 * 1024 * 16,
  // MAX_PARTS_COUNT - maximum number of parts for a single multipart session.
  MAX_PARTS_COUNT: 10000,
  // MAX_PART_SIZE - maximum part size 5GiB for a single multipart upload
  // operation.
  MAX_PART_SIZE: 1024 * 1024 * 1024 * 5,
  // MAX_SINGLE_PUT_OBJECT_SIZE - maximum size 5GiB of object per PUT
  // operation.
  MAX_SINGLE_PUT_OBJECT_SIZE: 1024 * 1024 * 1024 * 5,
  // MAX_MULTIPART_PUT_OBJECT_SIZE - maximum size 5TiB of object for
  // Multipart operation.
  MAX_MULTIPART_PUT_OBJECT_SIZE: 1024 * 1024 * 1024 * 1024 * 5
};
const GENERIC_SSE_HEADER = 'X-Amz-Server-Side-Encryption';
const ENCRYPTION_HEADERS = {
  // sseGenericHeader is the AWS SSE header used for SSE-S3 and SSE-KMS.
  sseGenericHeader: GENERIC_SSE_HEADER,
  // sseKmsKeyID is the AWS SSE-KMS key id.
  sseKmsKeyID: GENERIC_SSE_HEADER + '-Aws-Kms-Key-Id'
};

/**
 * Return Encryption headers
 * @param encConfig
 * @returns an object with key value pairs that can be used in headers.
 */
export function getEncryptionHeaders(encConfig) {
  const encType = encConfig.type;
  if (!isEmpty(encType)) {
    if (encType === ENCRYPTION_TYPES.SSEC) {
      return {
        [ENCRYPTION_HEADERS.sseGenericHeader]: 'AES256'
      };
    } else if (encType === ENCRYPTION_TYPES.KMS) {
      return {
        [ENCRYPTION_HEADERS.sseGenericHeader]: encConfig.SSEAlgorithm,
        [ENCRYPTION_HEADERS.sseKmsKeyID]: encConfig.KMSMasterKeyID
      };
    }
  }
  return {};
}
export function partsRequired(size) {
  const maxPartSize = PART_CONSTRAINTS.MAX_MULTIPART_PUT_OBJECT_SIZE / (PART_CONSTRAINTS.MAX_PARTS_COUNT - 1);
  let requiredPartSize = size / maxPartSize;
  if (size % maxPartSize > 0) {
    requiredPartSize++;
  }
  requiredPartSize = Math.trunc(requiredPartSize);
  return requiredPartSize;
}

/**
 * calculateEvenSplits - computes splits for a source and returns
 * start and end index slices. Splits happen evenly to be sure that no
 * part is less than 5MiB, as that could fail the multipart request if
 * it is not the last part.
 */
export function calculateEvenSplits(size, objInfo) {
  if (size === 0) {
    return null;
  }
  const reqParts = partsRequired(size);
  const startIndexParts = [];
  const endIndexParts = [];
  let start = objInfo.Start;
  if (isEmpty(start) || start === -1) {
    start = 0;
  }
  const divisorValue = Math.trunc(size / reqParts);
  const reminderValue = size % reqParts;
  let nextStart = start;
  for (let i = 0; i < reqParts; i++) {
    let curPartSize = divisorValue;
    if (i < reminderValue) {
      curPartSize++;
    }
    const currentStart = nextStart;
    const currentEnd = currentStart + curPartSize - 1;
    nextStart = currentEnd + 1;
    startIndexParts.push(currentStart);
    endIndexParts.push(currentEnd);
  }
  return {
    startIndex: startIndexParts,
    endIndex: endIndexParts,
    objInfo: objInfo
  };
}
const fxp = new XMLParser({
  numberParseOptions: {
    eNotation: false,
    hex: true,
    leadingZeros: true
  }
});

// eslint-disable-next-line @typescript-eslint/no-explicit-any
export function parseXml(xml) {
  const result = fxp.parse(xml);
  if (result.Error) {
    throw result.Error;
  }
  return result;
}

/**
 * get content size of object content to upload
 */
export async function getContentLength(s) {
  // use length property of string | Buffer
  if (typeof s === 'string' || Buffer.isBuffer(s)) {
    return s.length;
  }

  // property of `fs.ReadStream`
  const filePath = s.path;
  if (filePath && typeof filePath === 'string') {
    const stat = await fsp.lstat(filePath);
    return stat.size;
  }

  // property of `fs.ReadStream`
  const fd = s.fd;
  if (fd && typeof fd === 'number') {
    const stat = await fstat(fd);
    return stat.size;
  }
  return null;
}
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So comply with S3.\nconst encodeAsHex = (c: string) => `%${c.charCodeAt(0).toString(16).toUpperCase()}`\nexport function uriEscape(uriStr: string): string {\n  return encodeURIComponent(uriStr).replace(/[!'()*]/g, encodeAsHex)\n}\n\nexport function uriResourceEscape(string: string) {\n  return uriEscape(string).replace(/%2F/g, '/')\n}\n\nexport function getScope(region: string, date: Date, serviceName = 's3') {\n  return `${makeDateShort(date)}/${region}/${serviceName}/aws4_request`\n}\n\n/**\n * isAmazonEndpoint - true if endpoint is 's3.amazonaws.com' or 's3.cn-north-1.amazonaws.com.cn'\n */\nexport function isAmazonEndpoint(endpoint: string) {\n  return endpoint === 's3.amazonaws.com' || endpoint === 's3.cn-north-1.amazonaws.com.cn'\n}\n\n/**\n * isVirtualHostStyle - verify if bucket name is support with virtual\n * hosts. bucketNames with periods should be always treated as path\n * style if the protocol is 'https:', this is due to SSL wildcard\n * limitation. For all other buckets and Amazon S3 endpoint we will\n * default to virtual host style.\n */\nexport function isVirtualHostStyle(endpoint: string, protocol: string, bucket: string, pathStyle: boolean) {\n  if (protocol === 'https:' && bucket.includes('.')) {\n    return false\n  }\n  return isAmazonEndpoint(endpoint) || !pathStyle\n}\n\nexport function isValidIP(ip: string) {\n  return ipaddr.isValid(ip)\n}\n\n/**\n * @returns if endpoint is valid domain.\n */\nexport function isValidEndpoint(endpoint: string) {\n  return isValidDomain(endpoint) || isValidIP(endpoint)\n}\n\n/**\n * @returns if input host is a valid domain.\n */\nexport function isValidDomain(host: string) {\n  if (!isString(host)) {\n    return false\n  }\n  // See RFC 1035, RFC 3696.\n  if (host.length === 0 || host.length > 255) {\n    return false\n  }\n  // Host cannot start or end with a '-'\n  if (host[0] === '-' || host.slice(-1) === '-') {\n    return false\n  }\n  // Host cannot start or end with a '_'\n  if (host[0] === '_' || host.slice(-1) === '_') {\n    return false\n  }\n  // Host cannot start with a '.'\n  if (host[0] === '.') {\n    return false\n  }\n\n  const nonAlphaNumerics = '`~!@#$%^&*()+={}[]|\\\\\"\\';:><?/'\n  // All non alphanumeric characters are invalid.\n  for (const char of nonAlphaNumerics) {\n    if (host.includes(char)) {\n      return false\n    }\n  }\n  // No need to regexp match, since the list is non-exhaustive.\n  // We let it be valid and fail later.\n  return true\n}\n\n/**\n * Probes contentType using file extensions.\n *\n * @example\n * ```\n * // return 'image/png'\n * probeContentType('file.png')\n * ```\n */\nexport function probeContentType(path: string) {\n  let contentType = mime.lookup(path)\n  if (!contentType) {\n    contentType = 'application/octet-stream'\n  }\n  return contentType\n}\n\n/**\n * is input port valid.\n */\nexport function isValidPort(port: unknown): port is number {\n  // Convert string port to number if needed\n  const portNum = typeof port === 'string' ? parseInt(port, 10) : port\n\n  // verify if port is a valid number\n  if (!isNumber(portNum) || isNaN(portNum)) {\n    return false\n  }\n\n  // port `0` is valid and special case\n  return 0 <= portNum && portNum <= 65535\n}\n\nexport function isValidBucketName(bucket: unknown) {\n  if (!isString(bucket)) {\n    return false\n  }\n\n  // bucket length should be less than and no more than 63\n  // characters long.\n  if (bucket.length < 3 || bucket.length > 63) {\n    return false\n  }\n  // bucket with successive periods is invalid.\n  if (bucket.includes('..')) {\n    return false\n  }\n  // bucket cannot have ip address style.\n  if (/[0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+/.test(bucket)) {\n    return false\n  }\n  // bucket should begin with alphabet/number and end with alphabet/number,\n  // with alphabet/number/.- in the middle.\n  if (/^[a-z0-9][a-z0-9.-]+[a-z0-9]$/.test(bucket)) {\n    return true\n  }\n  return false\n}\n\n/**\n * check if objectName is a valid object name\n */\nexport function isValidObjectName(objectName: unknown) {\n  if (!isValidPrefix(objectName)) {\n    return false\n  }\n\n  return objectName.length !== 0\n}\n\n/**\n * check if prefix is valid\n */\nexport function isValidPrefix(prefix: unknown): prefix is string {\n  if (!isString(prefix)) {\n    return false\n  }\n  if (prefix.length > 1024) {\n    return false\n  }\n  return true\n}\n\n/**\n * check if typeof arg number\n */\nexport function isNumber(arg: unknown): arg is number {\n  return typeof arg === 'number'\n}\n\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nexport type AnyFunction = (...args: any[]) => any\n\n/**\n * check if typeof arg function\n */\nexport function isFunction(arg: unknown): arg is AnyFunction {\n  return typeof arg === 'function'\n}\n\n/**\n * check if typeof arg string\n */\nexport function isString(arg: unknown): arg is string {\n  return typeof arg === 'string'\n}\n\n/**\n * check if typeof arg object\n */\nexport function isObject(arg: unknown): arg is object {\n  return typeof arg === 'object' && arg !== null\n}\n/**\n * check if typeof arg is plain object\n */\nexport function isPlainObject(arg: unknown): arg is Record<string, unknown> {\n  return Object.prototype.toString.call(arg) === '[object Object]'\n}\n/**\n * check if object is readable stream\n */\nexport function isReadableStream(arg: unknown): arg is stream.Readable {\n  // eslint-disable-next-line @typescript-eslint/unbound-method\n  return isObject(arg) && isFunction((arg as stream.Readable)._read)\n}\n\n/**\n * check if arg is boolean\n */\nexport function isBoolean(arg: unknown): arg is boolean {\n  return typeof arg === 'boolean'\n}\n\nexport function isEmpty(o: unknown): o is null | undefined {\n  return _.isEmpty(o)\n}\n\nexport function isEmptyObject(o: Record<string, unknown>): boolean {\n  return Object.values(o).filter((x) => x !== undefined).length !== 0\n}\n\nexport function isDefined<T>(o: T): o is Exclude<T, null | undefined> {\n  return o !== null && o !== undefined\n}\n\n/**\n * check if arg is a valid date\n */\nexport function isValidDate(arg: unknown): arg is Date {\n  // @ts-expect-error checknew Date(Math.NaN)\n  return arg instanceof Date && !isNaN(arg)\n}\n\n/**\n * Create a Date string with format: 'YYYYMMDDTHHmmss' + Z\n */\nexport function makeDateLong(date?: Date): string {\n  date = date || new Date()\n\n  // Gives format like: '2017-08-07T16:28:59.889Z'\n  const s = date.toISOString()\n\n  return s.slice(0, 4) + s.slice(5, 7) + s.slice(8, 13) + s.slice(14, 16) + s.slice(17, 19) + 'Z'\n}\n\n/**\n * Create a Date string with format: 'YYYYMMDD'\n */\nexport function makeDateShort(date?: Date) {\n  date = date || new Date()\n\n  // Gives format like: '2017-08-07T16:28:59.889Z'\n  const s = date.toISOString()\n\n  return s.slice(0, 4) + s.slice(5, 7) + s.slice(8, 10)\n}\n\n/**\n * pipesetup sets up pipe() from left to right os streams array\n * pipesetup will also make sure that error emitted at any of the upstream Stream\n * will be emitted at the last stream. This makes error handling simple\n */\nexport function pipesetup(...streams: [stream.Readable, ...stream.Duplex[], stream.Writable]) {\n  // @ts-expect-error ts can't narrow this\n  return streams.reduce((src: stream.Readable, dst: stream.Writable) => {\n    src.on('error', (err) => dst.emit('error', err))\n    return src.pipe(dst)\n  })\n}\n\n/**\n * return a Readable stream that emits data\n */\nexport function readableStream(data: unknown): stream.Readable {\n  const s = new stream.Readable()\n  s._read = () => {}\n  s.push(data)\n  s.push(null)\n  return s\n}\n\n/**\n * Process metadata to insert appropriate value to `content-type` attribute\n */\nexport function insertContentType(metaData: ObjectMetaData, filePath: string): ObjectMetaData {\n  // check if content-type attribute present in metaData\n  for (const key in metaData) {\n    if (key.toLowerCase() === 'content-type') {\n      return metaData\n    }\n  }\n\n  // if `content-type` attribute is not present in metadata, then infer it from the extension in filePath\n  return {\n    ...metaData,\n    'content-type': probeContentType(filePath),\n  }\n}\n\n/**\n * Function prepends metadata with the appropriate prefix if it is not already on\n */\nexport function prependXAMZMeta(metaData?: ObjectMetaData): RequestHeaders {\n  if (!metaData) {\n    return {}\n  }\n\n  return _.mapKeys(metaData, (value, key) => {\n    if (isAmzHeader(key) || isSupportedHeader(key) || isStorageClassHeader(key)) {\n      return key\n    }\n\n    return MetaDataHeaderPrefix + key\n  })\n}\n\n/**\n * Checks if it is a valid header according to the AmazonS3 API\n */\nexport function isAmzHeader(key: string) {\n  const temp = key.toLowerCase()\n  return (\n    temp.startsWith(MetaDataHeaderPrefix) ||\n    temp === 'x-amz-acl' ||\n    temp.startsWith('x-amz-server-side-encryption-') ||\n    temp === 'x-amz-server-side-encryption'\n  )\n}\n\n/**\n * Checks if it is a supported Header\n */\nexport function isSupportedHeader(key: string) {\n  const supported_headers = [\n    'content-type',\n    'cache-control',\n    'content-encoding',\n    'content-disposition',\n    'content-language',\n    'x-amz-website-redirect-location',\n    'if-none-match',\n    'if-match',\n  ]\n  return supported_headers.includes(key.toLowerCase())\n}\n\n/**\n * Checks if it is a storage header\n */\nexport function isStorageClassHeader(key: string) {\n  return key.toLowerCase() === 'x-amz-storage-class'\n}\n\nexport function extractMetadata(headers: ResponseHeader) {\n  return _.mapKeys(\n    _.pickBy(headers, (value, key) => isSupportedHeader(key) || isStorageClassHeader(key) || isAmzHeader(key)),\n    (value, key) => {\n      const lower = key.toLowerCase()\n      if (lower.startsWith(MetaDataHeaderPrefix)) {\n        return lower.slice(MetaDataHeaderPrefix.length)\n      }\n\n      return key\n    },\n  )\n}\n\nexport function getVersionId(headers: ResponseHeader = {}) {\n  return headers['x-amz-version-id'] || null\n}\n\nexport function getSourceVersionId(headers: ResponseHeader = {}) {\n  return headers['x-amz-copy-source-version-id'] || null\n}\n\nexport function sanitizeETag(etag = ''): string {\n  const replaceChars: Record<string, string> = {\n    '\"': '',\n    '&quot;': '',\n    '&#34;': '',\n    '&QUOT;': '',\n    '&#x00022': '',\n  }\n  return etag.replace(/^(\"|&quot;|&#34;)|(\"|&quot;|&#34;)$/g, (m) => replaceChars[m] as string)\n}\n\nexport function toMd5(payload: Binary): string {\n  // use string from browser and buffer from nodejs\n  // browser support is tested only against minio server\n  return crypto.createHash('md5').update(Buffer.from(payload)).digest().toString('base64')\n}\n\nexport function toSha256(payload: Binary): string {\n  return crypto.createHash('sha256').update(payload).digest('hex')\n}\n\n/**\n * toArray returns a single element array with param being the element,\n * if param is just a string, and returns 'param' back if it is an array\n * So, it makes sure param is always an array\n */\nexport function toArray<T = unknown>(param: T | T[]): Array<T> {\n  if (!Array.isArray(param)) {\n    return [param] as T[]\n  }\n  return param\n}\n\nexport function sanitizeObjectKey(objectName: string): string {\n  // + symbol characters are not decoded as spaces in JS. so replace them first and decode to get the correct result.\n  const asStrName = (objectName ? objectName.toString() : '').replace(/\\+/g, ' ')\n  return decodeURIComponent(asStrName)\n}\n\nexport function sanitizeSize(size?: string): number | undefined {\n  return size ? Number.parseInt(size) : undefined\n}\n\nexport const PART_CONSTRAINTS = {\n  // absMinPartSize - absolute minimum part size (5 MiB)\n  ABS_MIN_PART_SIZE: 1024 * 1024 * 5,\n  // MIN_PART_SIZE - minimum part size 16MiB per object after which\n  MIN_PART_SIZE: 1024 * 1024 * 16,\n  // MAX_PARTS_COUNT - maximum number of parts for a single multipart session.\n  MAX_PARTS_COUNT: 10000,\n  // MAX_PART_SIZE - maximum part size 5GiB for a single multipart upload\n  // operation.\n  MAX_PART_SIZE: 1024 * 1024 * 1024 * 5,\n  // MAX_SINGLE_PUT_OBJECT_SIZE - maximum size 5GiB of object per PUT\n  // operation.\n  MAX_SINGLE_PUT_OBJECT_SIZE: 1024 * 1024 * 1024 * 5,\n  // MAX_MULTIPART_PUT_OBJECT_SIZE - maximum size 5TiB of object for\n  // Multipart operation.\n  MAX_MULTIPART_PUT_OBJECT_SIZE: 1024 * 1024 * 1024 * 1024 * 5,\n}\n\nconst GENERIC_SSE_HEADER = 'X-Amz-Server-Side-Encryption'\n\nconst ENCRYPTION_HEADERS = {\n  // sseGenericHeader is the AWS SSE header used for SSE-S3 and SSE-KMS.\n  sseGenericHeader: GENERIC_SSE_HEADER,\n  // sseKmsKeyID is the AWS SSE-KMS key id.\n  sseKmsKeyID: GENERIC_SSE_HEADER + '-Aws-Kms-Key-Id',\n} as const\n\n/**\n * Return Encryption headers\n * @param encConfig\n * @returns an object with key value pairs that can be used in headers.\n */\nexport function getEncryptionHeaders(encConfig: Encryption): RequestHeaders {\n  const encType = encConfig.type\n\n  if (!isEmpty(encType)) {\n    if (encType === ENCRYPTION_TYPES.SSEC) {\n      return {\n        [ENCRYPTION_HEADERS.sseGenericHeader]: 'AES256',\n      }\n    } else if (encType === ENCRYPTION_TYPES.KMS) {\n      return {\n        [ENCRYPTION_HEADERS.sseGenericHeader]: encConfig.SSEAlgorithm,\n        [ENCRYPTION_HEADERS.sseKmsKeyID]: encConfig.KMSMasterKeyID,\n      }\n    }\n  }\n\n  return {}\n}\n\nexport function partsRequired(size: number): number {\n  const maxPartSize = PART_CONSTRAINTS.MAX_MULTIPART_PUT_OBJECT_SIZE / (PART_CONSTRAINTS.MAX_PARTS_COUNT - 1)\n  let requiredPartSize = size / maxPartSize\n  if (size % maxPartSize > 0) {\n    requiredPartSize++\n  }\n  requiredPartSize = Math.trunc(requiredPartSize)\n  return requiredPartSize\n}\n\n/**\n * calculateEvenSplits - computes splits for a source and returns\n * start and end index slices. Splits happen evenly to be sure that no\n * part is less than 5MiB, as that could fail the multipart request if\n * it is not the last part.\n */\nexport function calculateEvenSplits<T extends { Start?: number }>(\n  size: number,\n  objInfo: T,\n): {\n  startIndex: number[]\n  objInfo: T\n  endIndex: number[]\n} | null {\n  if (size === 0) {\n    return null\n  }\n  const reqParts = partsRequired(size)\n  const startIndexParts: number[] = []\n  const endIndexParts: number[] = []\n\n  let start = objInfo.Start\n  if (isEmpty(start) || start === -1) {\n    start = 0\n  }\n  const divisorValue = Math.trunc(size / reqParts)\n\n  const reminderValue = size % reqParts\n\n  let nextStart = start\n\n  for (let i = 0; i < reqParts; i++) {\n    let curPartSize = divisorValue\n    if (i < reminderValue) {\n      curPartSize++\n    }\n\n    const currentStart = nextStart\n    const currentEnd = currentStart + curPartSize - 1\n    nextStart = currentEnd + 1\n\n    startIndexParts.push(currentStart)\n    endIndexParts.push(currentEnd)\n  }\n\n  return { startIndex: startIndexParts, endIndex: endIndexParts, objInfo: objInfo }\n}\nconst fxp = new XMLParser({ numberParseOptions: { eNotation: false, hex: true, leadingZeros: true } })\n\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nexport function parseXml(xml: string): any {\n  const result = fxp.parse(xml)\n  if (result.Error) {\n    throw result.Error\n  }\n\n  return result\n}\n\n/**\n * get content size of object content to upload\n */\nexport async function getContentLength(s: stream.Readable | Buffer | string): Promise<number | null> {\n  // use length property of string | Buffer\n  if (typeof s === 'string' || Buffer.isBuffer(s)) {\n    return s.length\n  }\n\n  // property of `fs.ReadStream`\n  const filePath = (s as unknown as Record<string, unknown>).path as string | undefined\n  if (filePath && typeof filePath === 'string') {\n    const stat = await fsp.lstat(filePath)\n    return stat.size\n  }\n\n  // property of `fs.ReadStream`\n  const fd = (s as unknown as Record<string, unknown>).fd as number | null | undefined\n  if (fd && typeof fd === 'number') {\n    const stat = await fstat(fd)\n    return stat.size\n  }\n\n  return 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