a2ba1b8189
Removes the following as they unnecessary /* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
75 lines
2.5 KiB
JavaScript
75 lines
2.5 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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// Basic node example that prints document metadata and text content.
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// Requires single file built version of PDF.js -- please run
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// `node make singlefile` before running the example.
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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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global.window = global;
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global.navigator = { userAgent: "node" };
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global.PDFJS = {};
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global.DOMParser = require('./domparsermock.js').DOMParserMock;
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require('../../build/singlefile/build/pdf.combined.js');
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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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// Will be using promises to load document, pages and misc data instead of
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// callback.
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PDFJS.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; // will be used to chain promises
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lastPromise = doc.getMetadata().then(function (data) {
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console.log('# Metadata Is Loaded');
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console.log('## Info');
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console.log(JSON.stringify(data.info, null, 2));
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console.log();
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if (data.metadata) {
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console.log('## Metadata');
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console.log(JSON.stringify(data.metadata.metadata, null, 2));
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console.log();
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}
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});
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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.getTextContent().then(function (content) {
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// Content contains lots of information about the text layout and
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// styles, but we need only strings at the moment
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var strings = content.items.map(function (item) {
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return item.str;
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});
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console.log('## Text Content');
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console.log(strings.join(' '));
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}).then(function () {
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console.log();
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});
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})
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};
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// Loading of the first page will wait on metadata and subsequent loadings
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// will wait on the previous pages.
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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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