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bobsingorbobsingor
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Make the native runtimes work
1 parent aed9539 commit 7eb8b5b

27 files changed

Lines changed: 4706 additions & 800 deletions

‎examples/pdf-runtime-demo/index.html‎

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<!doctype html>
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<html>
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<body>
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<h1>pdf-runtime browser demo</h1>
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<pre id="out">Loading...</pre>
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<script type="module" src="/src/browser.ts"></script>
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</body>
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</html>

‎examples/pdf-runtime-demo/package.json‎

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{
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"name": "@embedpdf/example-pdf-runtime-demo",
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"private": true,
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"version": "0.0.0",
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"type": "module",
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"scripts": {
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"dev": "vite",
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"node": "tsx src/node.ts",
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"node:wasm": "PDF_RUNTIME_PREFER=wasm tsx src/node.ts"
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},
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"dependencies": {
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"@embedpdf/pdf-runtime": "workspace:*"
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},
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"devDependencies": {
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"@types/node": "^22.19.0",
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"tsx": "^4.19.0",
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"vite": "^5.4.0"
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}
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}

‎examples/pdf-runtime-demo/public/sample.pdf‎

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‎examples/pdf-runtime-demo/src/browser.ts‎

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import { createPdfRuntime } from '@embedpdf/pdf-runtime';
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import { runDemo } from './demo.ts';
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const out = document.getElementById('out');
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if (!out) throw new Error('out element not found');
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try {
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const runtime = await createPdfRuntime({ prefer: 'wasm' });
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const bytes = new Uint8Array(await (await fetch('/sample.pdf')).arrayBuffer());
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const result = await runDemo(runtime, bytes);
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out.textContent = JSON.stringify(result, null, 2);
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await runtime.destroy();
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} catch (e) {
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out.textContent = 'Error: ' + (e instanceof Error ? (e.stack ?? e.message) : String(e));
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}

‎examples/pdf-runtime-demo/src/demo.ts‎

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import type { PdfRuntimeModule } from '@embedpdf/pdf-runtime';
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export interface DemoResult {
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platform: string;
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kind: PdfRuntimeModule['kind'];
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pageCount: number;
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}
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export async function runDemo(
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runtime: PdfRuntimeModule,
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pdfBytes: Uint8Array,
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): Promise<DemoResult> {
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const { fn, mem } = runtime;
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fn.FPDF_InitLibrary();
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const ptr = mem.alloc(pdfBytes.byteLength);
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mem.writeBytes(ptr, pdfBytes);
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const doc = fn.FPDF_LoadMemDocument(ptr, pdfBytes.byteLength, '');
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if (!doc) {
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mem.free(ptr);
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fn.FPDF_DestroyLibrary();
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throw new Error('FPDF_LoadMemDocument returned null');
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}
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const pageCount = fn.FPDF_GetPageCount(doc);
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fn.FPDF_CloseDocument(doc);
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mem.free(ptr);
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fn.FPDF_DestroyLibrary();
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return { platform: runtime.platform, kind: runtime.kind, pageCount };
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}

‎examples/pdf-runtime-demo/src/node.ts‎

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import { readFile } from 'node:fs/promises';
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import { dirname, resolve } from 'node:path';
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import { fileURLToPath } from 'node:url';
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import { createPdfRuntime } from '@embedpdf/pdf-runtime';
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import { runDemo } from './demo.ts';
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const here = dirname(fileURLToPath(import.meta.url));
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const pdfPath = process.argv[2] ?? resolve(here, '..', 'public', 'sample.pdf');
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const bytes = new Uint8Array(await readFile(pdfPath));
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const prefer = process.env.PDF_RUNTIME_PREFER === 'wasm' ? 'wasm' : 'auto';
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const runtime = await createPdfRuntime({ prefer });
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try {
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const result = await runDemo(runtime, bytes);
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console.log(JSON.stringify(result, null, 2));
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} finally {
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await runtime.destroy();
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}

‎examples/pdf-runtime-demo/tsconfig.json‎

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{
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"compilerOptions": {
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"target": "ESNext",
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"module": "ESNext",
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"moduleResolution": "Bundler",
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"allowImportingTsExtensions": true,
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"noEmit": true,
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"strict": true,
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"esModuleInterop": true,
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"skipLibCheck": true,
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"resolveJsonModule": true,
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"isolatedModules": true,
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"lib": ["ESNext", "DOM"],
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"types": ["node"]
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},
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"include": ["src/**/*"]
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}

‎examples/pdf-runtime-demo/vite.config.mjs‎

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import { defineConfig } from 'vite';
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export default defineConfig({
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optimizeDeps: { exclude: ['@embedpdf/pdf-runtime-wasm32'] },
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});

‎packages/pdf-runtime/.gitignore‎

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npm/*/pdf-runtime.node
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npm/win32-*/pdfium.dll
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npm/darwin-*/libpdfium.dylib
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npm/linux-*/libpdfium.so
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npm/wasm32/pdfium.js
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npm/wasm32/pdfium.cjs
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npm/wasm32/pdfium.wasm

‎packages/pdf-runtime/build/CMakeLists.txt‎

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if(WIN32)
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set(PDFIUM_LIB "${PDFIUM_LIB_DIR}/pdfium.dll.lib")
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else()
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set(PDFIUM_LIB "${PDFIUM_LIB_DIR}/libpdfium.a")
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elseif(APPLE)
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set(PDFIUM_LIB "${PDFIUM_LIB_DIR}/libpdfium.dylib")
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set_target_properties(${PROJECT_NAME} PROPERTIES
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BUILD_RPATH "@loader_path"
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INSTALL_RPATH "@loader_path"
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)
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elseif(UNIX)
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if(EXISTS "${PDFIUM_LIB_DIR}/libpdfium.so")
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set(PDFIUM_LIB "${PDFIUM_LIB_DIR}/libpdfium.so")
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set_target_properties(${PROJECT_NAME} PROPERTIES
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BUILD_RPATH "$ORIGIN"
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INSTALL_RPATH "$ORIGIN"
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)
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else()
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set(PDFIUM_LIB "${PDFIUM_LIB_DIR}/libpdfium.a")
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endif()
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endif()
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target_link_libraries(${PROJECT_NAME} PRIVATE

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