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fix: add legacy constants for decoding

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This commit is contained in:
Adhiraj Singh
2022-04-24 16:49:13 +05:30
parent a7e9dcf512
commit 3c278b35f0
7 changed files with 239 additions and 385 deletions
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15
src/WABinary/decode.ts
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@@ -1,7 +1,7 @@
import { inflateSync } from 'zlib'
import { DOUBLE_BYTE_TOKENS, SINGLE_BYTE_TOKENS, TAGS } from './constants'
import * as constants from './constants'
import { jidEncode } from './jid-utils'
import type { BinaryNode } from './types'
import type { BinaryNode, BinaryNodeCodingOptions } from './types'
export const decompressingIfRequired = (buffer: Buffer) => {
if(2 & buffer.readUInt8()) {
@@ -13,7 +13,12 @@ export const decompressingIfRequired = (buffer: Buffer) => {
return buffer
}
export const decodeDecompressedBinaryNode = (buffer: Buffer, indexRef: { index: number } = { index: 0 }): BinaryNode => {
export const decodeDecompressedBinaryNode = (
buffer: Buffer,
opts: Pick<BinaryNodeCodingOptions, 'DOUBLE_BYTE_TOKENS' | 'SINGLE_BYTE_TOKENS' | 'TAGS'>,
indexRef: { index: number } = { index: 0 }
): BinaryNode => {
const { DOUBLE_BYTE_TOKENS, SINGLE_BYTE_TOKENS, TAGS } = opts
const checkEOS = (length: number) => {
if(indexRef.index + length > buffer.length) {
@@ -181,7 +186,7 @@ export const decodeDecompressedBinaryNode = (buffer: Buffer, indexRef: { index:
const items: BinaryNode[] = []
const size = readListSize(tag)
for(let i = 0;i < size;i++) {
items.push(decodeDecompressedBinaryNode(buffer, indexRef))
items.push(decodeDecompressedBinaryNode(buffer, opts, indexRef))
}
return items
@@ -256,5 +261,5 @@ export const decodeDecompressedBinaryNode = (buffer: Buffer, indexRef: { index:
export const decodeBinaryNode = (buff: Buffer): BinaryNode => {
const decompBuff = decompressingIfRequired(buff)
return decodeDecompressedBinaryNode(decompBuff)
return decodeDecompressedBinaryNode(decompBuff, constants)
}