94b4b54ef6
In order to fix bug 1935076, we'll have to add a pure js fallback in case wasm is disabled or simd isn't supported. Unfortunately, this fallback will take some space. So, the main goal of this patch is to reduce the overall size (by ~93k). As a side effect, it should make easier to use an other wasm file (which must export _jp2_decode, _malloc and _free).
129 lines
3.3 KiB
JavaScript
129 lines
3.3 KiB
JavaScript
/* Copyright 2020 Mozilla Foundation
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
/* globals process */
|
|
|
|
import { isNodeJS, warn } from "../shared/util.js";
|
|
import { BaseCanvasFactory } from "./canvas_factory.js";
|
|
import { BaseCMapReaderFactory } from "./cmap_reader_factory.js";
|
|
import { BaseFilterFactory } from "./filter_factory.js";
|
|
import { BaseStandardFontDataFactory } from "./standard_fontdata_factory.js";
|
|
import { BaseWasmFactory } from "./wasm_factory.js";
|
|
|
|
if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("MOZCENTRAL")) {
|
|
throw new Error(
|
|
'Module "./node_utils.js" shall not be used with MOZCENTRAL builds.'
|
|
);
|
|
}
|
|
|
|
if (isNodeJS) {
|
|
if (typeof PDFJSDev === "undefined" || PDFJSDev.test("SKIP_BABEL")) {
|
|
warn("Please use the `legacy` build in Node.js environments.");
|
|
} else {
|
|
let canvas;
|
|
try {
|
|
const require = process
|
|
.getBuiltinModule("module")
|
|
.createRequire(import.meta.url);
|
|
|
|
try {
|
|
canvas = require("@napi-rs/canvas");
|
|
} catch (ex) {
|
|
warn(`Cannot load "@napi-rs/canvas" package: "${ex}".`);
|
|
}
|
|
} catch (ex) {
|
|
warn(`Cannot access the \`require\` function: "${ex}".`);
|
|
}
|
|
|
|
if (!globalThis.DOMMatrix) {
|
|
if (canvas?.DOMMatrix) {
|
|
globalThis.DOMMatrix = canvas.DOMMatrix;
|
|
} else {
|
|
warn("Cannot polyfill `DOMMatrix`, rendering may be broken.");
|
|
}
|
|
}
|
|
if (!globalThis.ImageData) {
|
|
if (canvas?.ImageData) {
|
|
globalThis.ImageData = canvas.ImageData;
|
|
} else {
|
|
warn("Cannot polyfill `ImageData`, rendering may be broken.");
|
|
}
|
|
}
|
|
if (!globalThis.Path2D) {
|
|
if (canvas?.Path2D) {
|
|
globalThis.Path2D = canvas.Path2D;
|
|
} else {
|
|
warn("Cannot polyfill `Path2D`, rendering may be broken.");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
async function fetchData(url) {
|
|
const fs = process.getBuiltinModule("fs");
|
|
const data = await fs.promises.readFile(url);
|
|
return new Uint8Array(data);
|
|
}
|
|
|
|
class NodeFilterFactory extends BaseFilterFactory {}
|
|
|
|
class NodeCanvasFactory extends BaseCanvasFactory {
|
|
/**
|
|
* @ignore
|
|
*/
|
|
_createCanvas(width, height) {
|
|
const require = process
|
|
.getBuiltinModule("module")
|
|
.createRequire(import.meta.url);
|
|
const canvas = require("@napi-rs/canvas");
|
|
return canvas.createCanvas(width, height);
|
|
}
|
|
}
|
|
|
|
class NodeCMapReaderFactory extends BaseCMapReaderFactory {
|
|
/**
|
|
* @ignore
|
|
*/
|
|
async _fetch(url) {
|
|
return fetchData(url);
|
|
}
|
|
}
|
|
|
|
class NodeStandardFontDataFactory extends BaseStandardFontDataFactory {
|
|
/**
|
|
* @ignore
|
|
*/
|
|
async _fetch(url) {
|
|
return fetchData(url);
|
|
}
|
|
}
|
|
|
|
class NodeWasmFactory extends BaseWasmFactory {
|
|
/**
|
|
* @ignore
|
|
*/
|
|
async _fetch(url) {
|
|
return fetchData(url);
|
|
}
|
|
}
|
|
|
|
export {
|
|
fetchData,
|
|
NodeCanvasFactory,
|
|
NodeCMapReaderFactory,
|
|
NodeFilterFactory,
|
|
NodeStandardFontDataFactory,
|
|
NodeWasmFactory,
|
|
};
|