94 lines
1.8 KiB
TypeScript
94 lines
1.8 KiB
TypeScript
export class BinaryWriter
|
|
{
|
|
private _buffer: Uint8Array;
|
|
|
|
constructor()
|
|
{
|
|
this._buffer = new Uint8Array();
|
|
}
|
|
|
|
public writeByte(byte: number): BinaryWriter
|
|
{
|
|
const array = new Uint8Array(1);
|
|
|
|
array[0] = byte;
|
|
|
|
this.appendArray(array);
|
|
|
|
return this;
|
|
}
|
|
|
|
public writeBytes(bytes: ArrayBuffer): BinaryWriter
|
|
{
|
|
const array = new Uint8Array(bytes);
|
|
|
|
this.appendArray(array);
|
|
|
|
return this;
|
|
}
|
|
|
|
public writeShort(short: number): BinaryWriter
|
|
{
|
|
const array = new Uint8Array(2);
|
|
|
|
array[0] = short >> 8;
|
|
array[1] = short & 0xFF;
|
|
|
|
this.appendArray(array);
|
|
|
|
return this;
|
|
}
|
|
|
|
public writeInt(integer: number): BinaryWriter
|
|
{
|
|
const array = new Uint8Array(4);
|
|
|
|
array[0] = integer >> 24;
|
|
array[1] = integer >> 16;
|
|
array[2] = integer >> 8;
|
|
array[3] = integer & 0xFF;
|
|
|
|
this.appendArray(array);
|
|
|
|
return this;
|
|
}
|
|
|
|
public writeString(string: string, includeLength: boolean = true): BinaryWriter
|
|
{
|
|
const array = new TextEncoder().encode(string);
|
|
|
|
if(includeLength)
|
|
{
|
|
this.writeShort(array.length);
|
|
this.appendArray(array);
|
|
}
|
|
else
|
|
{
|
|
this.appendArray(array);
|
|
}
|
|
|
|
return this;
|
|
}
|
|
|
|
private appendArray(array: Uint8Array): void
|
|
{
|
|
if(!array) return;
|
|
|
|
const mergedArray = new Uint8Array(this._buffer.length + array.length);
|
|
|
|
mergedArray.set(this._buffer);
|
|
mergedArray.set(array, this._buffer.length);
|
|
|
|
this._buffer = mergedArray;
|
|
}
|
|
|
|
public getBuffer(): ArrayBuffer
|
|
{
|
|
return this._buffer.buffer;
|
|
}
|
|
|
|
public toString(encoding?: string): string
|
|
{
|
|
return new TextDecoder(encoding).decode(this._buffer);
|
|
}
|
|
} |