412 lines
10 KiB
TypeScript
412 lines
10 KiB
TypeScript
/*!
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* Webogram v0.7.0 - messaging web application for MTProto
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* https://github.com/zhukov/webogram
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* Copyright (C) 2014 Igor Zhukov <igor.beatle@gmail.com>
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* https://github.com/zhukov/webogram/blob/master/LICENSE
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*/
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// @ts-ignore
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import {BigInteger, SecureRandom} from 'jsbn';
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import type { InputFileLocation, FileLocation } from '../layer';
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/// #if !MTPROTO_WORKER
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// @ts-ignore
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import pako from 'pako/dist/pako_inflate.min.js';
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export function gzipUncompress(bytes: ArrayBuffer, toString: true): string;
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export function gzipUncompress(bytes: ArrayBuffer, toString?: false): Uint8Array;
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export function gzipUncompress(bytes: ArrayBuffer, toString?: boolean): string | Uint8Array {
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//console.log(dT(), 'Gzip uncompress start');
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var result = pako.inflate(bytes, toString ? {to: 'string'} : undefined);
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//console.log(dT(), 'Gzip uncompress finish'/* , result */);
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return result;
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}
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/// #endif
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var _logTimer = Date.now();
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export function dT () {
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return '[' + ((Date.now() - _logTimer) / 1000).toFixed(3) + ']'
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}
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export function isObject(object: any) {
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return typeof(object) === 'object' && object !== null;
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}
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export function bigint(num: number) {
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return new BigInteger(num.toString(16), 16);
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}
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export function bigStringInt(strNum: string) {
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return new BigInteger(strNum, 10);
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}
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export function bytesToHex(bytes: any) {
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bytes = bytes || [];
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var arr = [];
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for(var i = 0; i < bytes.length; i++) {
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arr.push((bytes[i] < 16 ? '0' : '') + (bytes[i] || 0).toString(16));
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}
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return arr.join('');
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}
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export function bytesFromHex(hexString: string) {
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var len = hexString.length,
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i;
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var start = 0;
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var bytes = [];
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if(hexString.length % 2) {
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bytes.push(parseInt(hexString.charAt(0), 16));
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start++;
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}
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for(i = start; i < len; i += 2) {
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bytes.push(parseInt(hexString.substr(i, 2), 16));
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}
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return bytes;
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}
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export function bytesToBase64(bytes: number[] | Uint8Array) {
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var mod3
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var result = ''
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for (var nLen = bytes.length, nUint24 = 0, nIdx = 0; nIdx < nLen; nIdx++) {
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mod3 = nIdx % 3
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nUint24 |= bytes[nIdx] << (16 >>> mod3 & 24)
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if (mod3 === 2 || nLen - nIdx === 1) {
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result += String.fromCharCode(
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uint6ToBase64(nUint24 >>> 18 & 63),
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uint6ToBase64(nUint24 >>> 12 & 63),
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uint6ToBase64(nUint24 >>> 6 & 63),
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uint6ToBase64(nUint24 & 63)
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)
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nUint24 = 0
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}
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}
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return result.replace(/A(?=A$|$)/g, '=')
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}
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export function uint6ToBase64(nUint6: number) {
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return nUint6 < 26
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? nUint6 + 65
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: nUint6 < 52
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? nUint6 + 71
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: nUint6 < 62
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? nUint6 - 4
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: nUint6 === 62
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? 43
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: nUint6 === 63
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? 47
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: 65
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}
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export function base64ToBlob(base64str: string, mimeType: string) {
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var sliceSize = 1024;
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var byteCharacters = atob(base64str);
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var bytesLength = byteCharacters.length;
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var slicesCount = Math.ceil(bytesLength / sliceSize);
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var byteArrays = new Array(slicesCount);
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for(var sliceIndex = 0; sliceIndex < slicesCount; ++sliceIndex) {
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var begin = sliceIndex * sliceSize;
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var end = Math.min(begin + sliceSize, bytesLength);
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var bytes = new Array(end - begin);
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for(var offset = begin, i = 0; offset < end; ++i, ++offset) {
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bytes[i] = byteCharacters[offset].charCodeAt(0);
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}
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byteArrays[sliceIndex] = new Uint8Array(bytes);
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}
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return blobConstruct(byteArrays, mimeType);
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}
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export function dataUrlToBlob(url: string) {
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// var name = 'b64blob ' + url.length
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// console.time(name)
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var urlParts = url.split(',');
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var base64str = urlParts[1];
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var mimeType = urlParts[0].split(':')[1].split(';')[0];
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var blob = base64ToBlob(base64str, mimeType);
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// console.timeEnd(name)
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return blob;
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}
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export function blobConstruct(blobParts: any, mimeType: string = ''): Blob {
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let blob;
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const safeMimeType = blobSafeMimeType(mimeType);
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try {
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blob = new Blob(blobParts, {type: safeMimeType});
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} catch(e) {
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// @ts-ignore
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let bb = new BlobBuilder;
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blobParts.forEach((blobPart: any) => {
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bb.append(blobPart);
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});
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blob = bb.getBlob(safeMimeType);
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}
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return blob;
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}
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export function blobSafeMimeType(mimeType: string) {
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if([
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'image/jpeg',
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'image/png',
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'image/gif',
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'image/webp',
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'image/bmp',
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'video/mp4',
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'video/webm',
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'video/quicktime',
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'audio/ogg',
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'audio/mpeg',
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'audio/mp4',
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'application/json'
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].indexOf(mimeType) === -1) {
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return 'application/octet-stream';
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}
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return mimeType;
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}
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export function bytesCmp(bytes1: number[] | Uint8Array, bytes2: number[] | Uint8Array) {
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var len = bytes1.length;
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if(len != bytes2.length) {
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return false;
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}
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for(var i = 0; i < len; i++) {
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if(bytes1[i] != bytes2[i]) {
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return false;
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}
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}
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return true;
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}
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export function bytesXor(bytes1: number[] | Uint8Array, bytes2: number[] | Uint8Array) {
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var len = bytes1.length;
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var bytes = [];
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for (var i = 0; i < len; ++i) {
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bytes[i] = bytes1[i] ^ bytes2[i];
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}
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return bytes;
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}
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export function bytesFromBigInt(bigInt: BigInteger, len?: number) {
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var bytes = bigInt.toByteArray();
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if(len && bytes.length < len) {
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var padding = [];
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for(var i = 0, needPadding = len - bytes.length; i < needPadding; i++) {
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padding[i] = 0;
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}
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if(bytes instanceof ArrayBuffer) {
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bytes = bufferConcat(padding, bytes);
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} else {
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bytes = padding.concat(bytes);
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}
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} else {
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while (!bytes[0] && (!len || bytes.length > len)) {
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bytes = bytes.slice(1);
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}
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}
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return bytes;
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}
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export function bytesToArrayBuffer(b: Iterable<number>) {
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return (new Uint8Array(b)).buffer;
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}
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export function convertToArrayBuffer(bytes: any | ArrayBuffer | Uint8Array) {
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// Be careful with converting subarrays!!
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if(bytes instanceof ArrayBuffer) {
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return bytes;
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}
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if(bytes.buffer !== undefined &&
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bytes.buffer.byteLength == bytes.length * bytes.BYTES_PER_ELEMENT) {
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return bytes.buffer;
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}
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return bytesToArrayBuffer(bytes);
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}
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export function convertToUint8Array(bytes: any) {
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if(bytes.buffer !== undefined) {
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return bytes;
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}
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return new Uint8Array(bytes);
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}
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export function convertToByteArray(bytes: any) {
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if(Array.isArray(bytes)) {
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return bytes;
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}
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bytes = convertToUint8Array(bytes);
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var newBytes = [];
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for(var i = 0, len = bytes.length; i < len; i++) {
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newBytes.push(bytes[i]);
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}
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return newBytes;
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}
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export function bytesFromArrayBuffer(buffer: ArrayBuffer) {
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var len = buffer.byteLength;
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var byteView = new Uint8Array(buffer);
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var bytes = [];
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for(var i = 0; i < len; ++i) {
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bytes[i] = byteView[i];
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}
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return bytes;
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}
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export function bufferConcat(buffer1: any, buffer2: any) {
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var l1 = buffer1.byteLength || buffer1.length;
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var l2 = buffer2.byteLength || buffer2.length;
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var tmp = new Uint8Array(l1 + l2);
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tmp.set(buffer1 instanceof ArrayBuffer ? new Uint8Array(buffer1) : buffer1, 0);
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tmp.set(buffer2 instanceof ArrayBuffer ? new Uint8Array(buffer2) : buffer2, l1);
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return tmp.buffer;
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}
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export function bufferConcats(...args: any[]) {
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let length = 0;
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args.forEach(b => length += b.byteLength || b.length);
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var tmp = new Uint8Array(length);
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let lastLength = 0;
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args.forEach(b => {
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tmp.set(b instanceof ArrayBuffer ? new Uint8Array(b) : b, lastLength);
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lastLength += b.byteLength || b.length;
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});
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return tmp/* .buffer */;
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}
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export function longToInts(sLong: string) {
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var divRem = bigStringInt(sLong).divideAndRemainder(bigint(0x100000000));
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return [divRem[0].intValue(), divRem[1].intValue()];
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}
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export function bytesFromWords(wordArray: {words: number[] | Uint8Array | Uint32Array, sigBytes: number}) {
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var words = wordArray.words;
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var sigBytes = wordArray.sigBytes;
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var bytes = [];
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for(var i = 0; i < sigBytes; i++) {
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bytes.push((words[i >>> 2] >>> (24 - (i % 4) * 8)) & 0xff);
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}
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return bytes;
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}
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export function bytesFromWordss(input: Uint32Array) {
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var o = [];
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for(var i = 0; i < input.length * 4; i++) {
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o.push((input[i >>> 2] >>> (24 - (i % 4) * 8)) & 0xff);
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}
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return o;
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}
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export function bytesToWordss(input: ArrayBuffer | Uint8Array) {
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let bytes: Uint8Array;
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if(input instanceof ArrayBuffer) bytes = new Uint8Array(input);
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else bytes = input;
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var len = bytes.length;
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var words: number[] = [];
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var i;
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for(i = 0; i < len; i++) {
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words[i >>> 2] |= bytes[i] << (24 - (i % 4) * 8);
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}
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return new Uint32Array(words);
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}
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export function longToBytes(sLong: string) {
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return bytesFromWords({words: longToInts(sLong), sigBytes: 8}).reverse();
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}
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export function longFromInts(high: number, low: number) {
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return bigint(high).shiftLeft(32).add(bigint(low)).toString(10);
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}
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export function addPadding(bytes: any, blockSize: number = 16, zeroes?: boolean, full = false, prepend = false) {
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let len = bytes.byteLength || bytes.length;
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let needPadding = blockSize - (len % blockSize);
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if(needPadding > 0 && (needPadding < blockSize || full)) {
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////console.log('addPadding()', len, blockSize, needPadding);
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let padding = new Array(needPadding);
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if(zeroes) {
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for(let i = 0; i < needPadding; i++) {
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padding[i] = 0;
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}
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} else {
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(new SecureRandom()).nextBytes(padding);
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}
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if(bytes instanceof ArrayBuffer) {
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bytes = prepend ? bufferConcat(padding, bytes) : bufferConcat(bytes, padding);
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} else if(bytes instanceof Uint8Array) {
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let _bytes = new Uint8Array(bytes.length + padding.length);
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if(prepend) {
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_bytes.set(padding);
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_bytes.set(bytes, padding.length);
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} else {
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_bytes.set(bytes);
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_bytes.set(padding, bytes.length);
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}
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bytes = _bytes;
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} else {
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bytes = prepend ? padding.concat(bytes) : bytes.concat(padding);
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}
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}
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return bytes;
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}
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export function nextRandomInt(maxValue: number) {
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return Math.floor(Math.random() * maxValue);
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}
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export function getFileNameByLocation(location: InputFileLocation | FileLocation, options?: Partial<{
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fileName: string
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}>) {
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const fileName = '';//(options?.fileName || '').split('.');
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const ext = fileName[fileName.length - 1] || '';
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switch(location._) {
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case 'inputPhotoFileLocation':
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case 'inputDocumentFileLocation': {
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const thumbPart = location.thumb_size ? '_' + location.thumb_size : '';
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return (fileName[0] ? fileName[0] + '_' : '') + location.id + thumbPart + (ext ? '.' + ext : ext);
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}
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case 'fileLocationToBeDeprecated':
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case 'inputPeerPhotoFileLocation':
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case 'inputStickerSetThumb':
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case 'inputFileLocation': {
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return location.volume_id + '_' + location.local_id + (ext ? '.' + ext : ext);
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}
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default: {
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console.error('Unrecognized location:', location);
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return '';
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}
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}
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}
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