Merge pull request #7 from tind/support-standard-fonts

Update and support standard fonts

package.json

@@ -1,13 +1,13 @@
 {
    "name": "pdf-thumbnails",
-   "version": "0.4.0",
+   "version": "0.5.0",
    "main": "src/app.js",
    "repository": "https://www.github.com/tind/pdf-thumbnails",
    "license": "MIT",
    "dependencies": {
       "canvas": "~2.9.0",
-      "commander": "~8.3.0",
-      "pdfjs-dist": "~2.12.313"
+      "commander": "~9.0.0",
+      "pdfjs-dist": "~2.13.216"
    },
    "devDependencies": {
       "mocha": "~9.2.0"

src/app.js

@@ -31,14 +31,15 @@ program
     .option("-p, --pagenum <pagenum>", "page number", _parseInt, 1)
     .option("-w, --width <width>", "width", _parseInt, 300)
     .option("-q, --quality <quality>", "jpeg quality", _parseFloat, 1.0)
+    .option("-F, --standard-fonts <dir>", "standard fonts", "/tmp/fonts/")
     .arguments("<file...>")
     .action(async (files, options, command) => {
         const canvasFactory = new NodeCanvasFactory();
         try {
             for (const file of files) {
                 const outputPath = join(options.output, basename(file, ".pdf") + ".jpg");
                 const contents = await readFile(file);
-                const jpegBuffer = await getThumbnail(contents, options.pagenum, options.width, options.quality, canvasFactory);
+                const jpegBuffer = await getThumbnail(contents, options.pagenum, options.width, options.quality, options.standardFonts, canvasFactory);
 
                 await writeFile(outputPath, jpegBuffer);
             }

src/lib.js

@@ -34,8 +34,8 @@ class NodeCanvasFactory {
     }
 }
 
-async function getThumbnail(data, pageNum = 1, width = 300, quality = 1.0, canvasFactory = new NodeCanvasFactory()) {
-    const loadingTask = pdfjsLib.getDocument({data: data});
+async function getThumbnail(data, pageNum = 1, width = 300, quality = 1.0, standardFonts = '/tmp/fonts/', canvasFactory = new NodeCanvasFactory()) {
+    const loadingTask = pdfjsLib.getDocument({data: data, standardFontDataUrl: standardFonts});
     const document = await loadingTask.promise;
     const page = await document.getPage(pageNum);