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Update wasm to 0.3.0 changes in IIPHandler.ts

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This commit is contained in:
Anthony Kim
2026-02-10 14:35:34 -08:00
parent c6a572fe21
commit a25db1c76d
3 changed files with 36 additions and 294 deletions
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addons/addon-image/src/IIPHandler.ts
+24 -14
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@@ -5,12 +5,16 @@
import { IImageAddonOptions, IOscHandler, IResetHandler, ITerminalExt } from './Types';
import { ImageRenderer } from './ImageRenderer';
import { ImageStorage, CELL_SIZE_DEFAULT } from './ImageStorage';
import Base64Decoder from 'xterm-wasm-parts/lib/base64/Base64Decoder.wasm';
import Base64Decoder, { type DecodeStatus } from 'xterm-wasm-parts/lib/base64/Base64Decoder.wasm';
import { HeaderParser, IHeaderFields, HeaderState } from './IIPHeaderParser';
import { imageType, UNSUPPORTED_TYPE } from './IIPMetrics';
// limit hold memory in base64 decoder
// limit hold memory in base64 decoder (encoded bytes)
const KEEP_DATA = 4194304;
const INITIAL_DATA = 1048576;
// Local mirror of const enum (esbuild can't inline const enums from external packages)
const DECODER_OK: DecodeStatus.OK = 0;
// default IIP header values
const DEFAULT_HEADER: IHeaderFields = {
@@ -27,7 +31,7 @@ export class IIPHandler implements IOscHandler, IResetHandler {
private _aborted = false;
private _hp = new HeaderParser();
private _header: IHeaderFields = DEFAULT_HEADER;
private _dec = new Base64Decoder(KEEP_DATA);
private _dec: Base64Decoder;
private _metrics = UNSUPPORTED_TYPE;
constructor(
@@ -35,7 +39,11 @@ export class IIPHandler implements IOscHandler, IResetHandler {
private readonly _renderer: ImageRenderer,
private readonly _storage: ImageStorage,
private readonly _coreTerminal: ITerminalExt
) {}
) {
const maxEncodedBytes = Math.ceil(this._opts.iipSizeLimit * 4 / 3);
const initialBytes = Math.min(INITIAL_DATA, maxEncodedBytes);
this._dec = new Base64Decoder(KEEP_DATA, maxEncodedBytes, initialBytes);
}
public reset(): void {}
@@ -50,7 +58,7 @@ export class IIPHandler implements IOscHandler, IResetHandler {
if (this._aborted) return;
if (this._hp.state === HeaderState.END) {
if (this._dec.put(data, start, end)) {
if (this._dec.put(data.subarray(start, end)) !== DECODER_OK) {
this._dec.release();
this._aborted = true;
}
@@ -66,8 +74,8 @@ export class IIPHandler implements IOscHandler, IResetHandler {
this._aborted = true;
return;
}
this._dec.init(this._header.size);
if (this._dec.put(data, dataPos, end)) {
this._dec.init();
if (this._dec.put(data.subarray(dataPos, end)) !== DECODER_OK) {
this._dec.release();
this._aborted = true;
}
@@ -85,13 +93,15 @@ export class IIPHandler implements IOscHandler, IResetHandler {
let cond: number | boolean = true;
if (cond = success) {
if (cond = !this._dec.end()) {
this._metrics = imageType(this._dec.data8);
if (cond = this._metrics.mime !== 'unsupported') {
w = this._metrics.width;
h = this._metrics.height;
if (cond = w && h && w * h < this._opts.pixelLimit) {
[w, h] = this._resize(w, h).map(Math.floor);
cond = w && h && w * h < this._opts.pixelLimit;
if (cond = this._dec.data8.length === this._header.size) {
this._metrics = imageType(this._dec.data8);
if (cond = this._metrics.mime !== 'unsupported') {
w = this._metrics.width;
h = this._metrics.height;
if (cond = w && h && w * h < this._opts.pixelLimit) {
[w, h] = this._resize(w, h).map(Math.floor);
cond = w && h && w * h < this._opts.pixelLimit;
}
}
}
}