81 lines
2.4 KiB
JavaScript
81 lines
2.4 KiB
JavaScript
/* Any copyright is dedicated to the Public Domain.
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* http://creativecommons.org/publicdomain/zero/1.0/ */
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//
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// Node tool to dump SVG output into a file.
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//
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var fs = require('fs');
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// HACK few hacks to let PDF.js be loaded not as a module in global space.
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require('./domstubs.js');
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// Run `gulp dist` to generate 'pdfjs-dist' npm package files.
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var pdfjsLib = require('../../build/dist');
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// Loading file from file system into typed array
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var pdfPath = process.argv[2] || '../../web/compressed.tracemonkey-pldi-09.pdf';
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var data = new Uint8Array(fs.readFileSync(pdfPath));
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// Dumps svg outputs to a folder called svgdump
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function writeToFile(svgdump, pageNum) {
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var name = getFileNameFromPath(pdfPath);
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fs.mkdir('./svgdump/', function(err) {
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if (!err || err.code === 'EEXIST') {
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fs.writeFile('./svgdump/' + name + "-" + pageNum + '.svg', svgdump,
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function(err) {
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if (err) {
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console.log('Error: ' + err);
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} else {
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console.log('Page: ' + pageNum);
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}
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});
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}
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});
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}
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// Get filename from the path
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function getFileNameFromPath(path) {
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var index = path.lastIndexOf('/');
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var extIndex = path.lastIndexOf('.');
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return path.substring(index , extIndex);
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}
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// Will be using promises to load document, pages and misc data instead of
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// callback.
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pdfjsLib.getDocument(data).then(function (doc) {
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var numPages = doc.numPages;
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console.log('# Document Loaded');
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console.log('Number of Pages: ' + numPages);
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console.log();
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var lastPromise = Promise.resolve(); // will be used to chain promises
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var loadPage = function (pageNum) {
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return doc.getPage(pageNum).then(function (page) {
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console.log('# Page ' + pageNum);
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var viewport = page.getViewport(1.0 /* scale */);
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console.log('Size: ' + viewport.width + 'x' + viewport.height);
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console.log();
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return page.getOperatorList().then(function (opList) {
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var svgGfx = new pdfjsLib.SVGGraphics(page.commonObjs, page.objs);
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svgGfx.embedFonts = true;
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return svgGfx.getSVG(opList, viewport).then(function (svg) {
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var svgDump = svg.toString();
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writeToFile(svgDump, pageNum);
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});
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});
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})
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};
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for (var i = 1; i <= numPages; i++) {
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lastPromise = lastPromise.then(loadPage.bind(null, i));
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}
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return lastPromise;
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}).then(function () {
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console.log('# End of Document');
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}, function (err) {
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console.error('Error: ' + err);
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});
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