Add functions for reading/writing strings without lengths

This commit is contained in:
Holly Stubbs 2024-01-01 22:23:16 +00:00
parent 4cacdbf113
commit 961df8cd72
Signed by: tgpholly
GPG key ID: B8583C4B7D18119E
8 changed files with 94 additions and 26 deletions

View file

@ -50,4 +50,25 @@ export class ReaderBase {
public readBool() {
return Boolean(this.readUByte());
}
public readShortString() {
const length = this.readUByte();
let text = "";
for (let i = 0; i < length; i++) {
text += String.fromCharCode(this.readUByte());
}
return text;
}
public readBytesAsString(bytesToRead:number) {
let text = "";
for (let i = 0; i < bytesToRead; i++) {
text += String.fromCharCode(this.readUByte());
}
return text;
}
}

View file

@ -76,4 +76,19 @@ export class WriterBase {
return this;
}
public writeStringAsBytes(text:string) {
let buffer;
if (this.resizable) {
buffer = getBufferClass().alloc(text.length);
} else {
buffer = this.buffer;
}
for (let i = 0; i < text.length; i++) {
buffer.writeUInt8(text.charCodeAt(i), i);
}
return this;
}
}

View file

@ -9,6 +9,8 @@ export interface IReader {
readByte(): number,
readUByte(): number,
readBool(): boolean,
readShortString(): string,
readBytesAsString(bytesToRead:number): string,
readShort(): number,
readUShort(): number,
readInt(): number,
@ -17,7 +19,7 @@ export interface IReader {
readULong(): bigint,
readFloat(): number,
readDouble(): number,
readShortString(): string,
readString(): string,
readShortsAsString(shortsToRead:number): string,
readString16(): string,
}

View file

@ -53,20 +53,9 @@ export class ReaderBE extends ReaderBase implements IReader {
return value;
}
public readShortString() {
const length = this.readUByte();
let text:string = "";
for (let i = 0; i < length; i++) {
text += String.fromCharCode(this.readUByte());
}
return text;
}
public readString() {
const length = this.readUShort();
let text:string = "";
let text = "";
for (let i = 0; i < length; i++) {
text += String.fromCharCode(this.readUByte());
@ -77,7 +66,7 @@ export class ReaderBE extends ReaderBase implements IReader {
public readString16() {
const length = this.readUShort();
let text:string = "";
let text = "";
for (let i = 0; i < length; i++) {
text += String.fromCharCode(this.readUShort());
@ -85,4 +74,14 @@ export class ReaderBE extends ReaderBase implements IReader {
return text;
}
public readShortsAsString(shortsToRead:number) {
let text = "";
for (let i = 0; i < shortsToRead; i++) {
text += String.fromCharCode(this.readUShort());
}
return text;
}
}

View file

@ -53,17 +53,6 @@ export class ReaderLE extends ReaderBase implements IReader {
return value;
}
public readShortString() {
const length = this.readUByte();
let text:string = "";
for (let i = 0; i < length; i++) {
text += String.fromCharCode(this.readUByte());
}
return text;
}
public readString() {
const length = this.readUShort();
let text:string = "";
@ -85,4 +74,14 @@ export class ReaderLE extends ReaderBase implements IReader {
return text;
}
public readShortsAsString(shortsToRead:number) {
let text = "";
for (let i = 0; i < shortsToRead; i++) {
text += String.fromCharCode(this.readUShort());
}
return text;
}
}

View file

@ -11,15 +11,17 @@ export interface IWriter {
writeByte(value:number): IWriter,
writeUByte(value:number): IWriter,
writeBool(value:boolean|number): IWriter,
writeStringAsBytes(text:string): IWriter,
writeShort(value:number): IWriter,
writeUShort(value:number): IWriter,
writeInt(value:number): IWriter,
writeUInt(value:number): IWriter,
writeLong(value:number|bigint): IWriter,
writeULong(value:number): IWriter,
writeULong(value:number|bigint): IWriter,
writeFloat(value:number): IWriter,
writeDouble(value:number): IWriter,
writeShortString(text:string): IWriter,
writeString(text:string): IWriter,
writeString16(text:string): IWriter,
writeStringAsShorts(text:string): IWriter
}

View file

@ -147,4 +147,19 @@ export class WriterBE extends WriterBase implements IWriter {
return this;
}
public writeStringAsShorts(text:string) {
let buffer:Buffer;
if (this.resizable) {
buffer = getBufferClass().alloc(text.length * 2);
} else {
buffer = this.buffer;
}
for (let i = 0; i < text.length; i++) {
buffer.writeUint16BE(text.charCodeAt(i), i);
}
return this;
}
}

View file

@ -146,4 +146,19 @@ export class WriterLE extends WriterBase implements IWriter {
return this;
}
public writeStringAsShorts(text:string) {
let buffer:Buffer;
if (this.resizable) {
buffer = getBufferClass().alloc(text.length * 2);
} else {
buffer = this.buffer;
}
for (let i = 0; i < text.length; i++) {
buffer.writeUint16LE(text.charCodeAt(i), i);
}
return this;
}
}