Added svg export tool

examples/node/pdf2svg.js

@@ -0,0 +1,85 @@
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+//
+// Node tool to dump SVG output into a file.
+//
+
+var fs = require('fs');
+
+// HACK few hacks to let PDF.js be loaded not as a module in global space.
+global.window = global;
+global.navigator = { userAgent: 'node' };
+global.PDFJS = {};
+
+PDFJS.workerSrc = true;
+require('../../build/singlefile/build/pdf.combined.js');
+require('./domstubs.js');
+
+// Loading file from file system into typed array
+var pdfPath = process.argv[2] || '../../web/compressed.tracemonkey-pldi-09.pdf';
+var data = new Uint8Array(fs.readFileSync(pdfPath));
+
+// Dumps svg outputs to a folder called svgdump
+function writeToFile(svgdump, pageNum) {
+  var name = getFileNameFromPath(pdfPath);
+  fs.mkdir('./svgdump/', function(err) {
+    if (!err || err.code === 'EEXIST') {
+      fs.writeFile('./svgdump/' + name + "-" + pageNum + '.svg', svgdump,
+        function(err) {
+          if (err) {
+            console.log('Error: ' + err);
+          } else {
+            console.log('Page: ' + pageNum);
+          }
+        });
+    }
+  });
+}
+
+// Get filename from the path
+
+function getFileNameFromPath(path) {
+  var index = path.lastIndexOf('/');
+  var extIndex = path.lastIndexOf('.');
+  return path.substring(index , extIndex);
+}
+
+// Will be using promises to load document, pages and misc data instead of
+// callback.
+PDFJS.getDocument(data).then(function (doc) {
+  var numPages = doc.numPages;
+  console.log('# Document Loaded');
+  console.log('Number of Pages: ' + numPages);
+  console.log();
+
+  var lastPromise = Promise.resolve(); // will be used to chain promises
+  var loadPage = function (pageNum) {
+    return doc.getPage(pageNum).then(function (page) {
+      console.log('# Page ' + pageNum);
+      var viewport = page.getViewport(1.0 /* scale */);
+      console.log('Size: ' + viewport.width + 'x' + viewport.height);
+      console.log();
+      
+      return page.getOperatorList().then(function (opList) {
+        var svgGfx = new PDFJS.SVGGraphics(page.commonObjs, page.objs);
+        return svgGfx.loadDependencies(opList).then(function (values) {
+          var svgDump = svgGfx.getSVG(viewport, pageNum, opList).toString();
+          writeToFile(svgDump, pageNum);
+        });
+      });
+    })
+  };
+  
+  for (var i = 1; i <= numPages; i++) {
+    lastPromise = lastPromise.then(loadPage.bind(null, i));
+  }
+  return lastPromise;
+}).then(function () {
+  console.log('# End of Document');
+}, function (err) {
+  console.error('Error: ' + err);
+});
+