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This commit is contained in:
Adhiraj
2020-07-19 23:26:48 +05:30
parent da73905b5e
commit 7f2468efcf
12 changed files with 130 additions and 54 deletions
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29
src/Binary/Encoder.ts
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@@ -2,12 +2,12 @@ import { WA } from './Constants'
import { proto } from '../../WAMessage/WAMessage'
export default class Encoder {
data: Array<number> = []
data: number[] = []
pushByte(value: number) {
this.data.push(value & 0xff)
}
pushInt(value: number, n: number, littleEndian = false) {
pushInt(value: number, n: number, littleEndian=false) {
for (let i = 0; i < n; i++) {
const curShift = littleEndian ? i : n - 1 - i
this.data.push((value >> (curShift * 8)) & 0xff)
@@ -16,17 +16,17 @@ export default class Encoder {
pushInt20(value: number) {
this.pushBytes([(value >> 16) & 0x0f, (value >> 8) & 0xff, value & 0xff])
}
pushBytes(bytes: Uint8Array | Array<number>) {
this.data.push.apply(this.data, bytes)
pushBytes(bytes: Uint8Array | Buffer | number[]) {
bytes.forEach (b => this.data.push(b))
//this.data.push.apply(this.data, bytes)
}
pushString(str: string) {
const bytes = Buffer.from (str, 'utf-8')
this.pushBytes(bytes)
}
writeByteLength(length: number) {
if (length >= 4294967296) {
throw new Error('string too large to encode: ' + length)
}
if (length >= 4294967296) throw new Error('string too large to encode: ' + length)
if (length >= 1 << 20) {
this.pushByte(WA.Tags.BINARY_32)
this.pushInt(length, 4) // 32 bit integer
@@ -101,19 +101,18 @@ export default class Encoder {
this.pushBytes([WA.Tags.LIST_16, listSize])
}
}
writeChildren(children: string | Array<WA.Node> | Object) {
if (!children) {
return
}
writeChildren(children: string | Array<WA.Node> | Buffer | Object) {
if (!children) return
if (typeof children === 'string') {
this.writeString(children, true)
} else if (Buffer.isBuffer(children)) {
this.writeByteLength (children.length)
this.pushBytes(children)
} else if (Array.isArray(children)) {
this.writeListStart(children.length)
children.forEach((c) => {
if (c) this.writeNode(c)
})
} else if (typeof children === 'object') {
children.forEach(c => c && this.writeNode(c))
} else if (typeof children === 'object') {
const buffer = WA.Message.encode(children as proto.WebMessageInfo).finish()
this.writeByteLength(buffer.length)
this.pushBytes(buffer)