[Pkg-javascript-commits] [pdf.js] 196/246: Added svg export tool
David Prévot
taffit at moszumanska.debian.org
Sun Sep 7 15:36:40 UTC 2014
This is an automated email from the git hooks/post-receive script.
taffit pushed a commit to branch master
in repository pdf.js.
commit 0e5998a325a16dc6f88ad10b8ab5a9c74df5301c
Author: pramodhkp <prmdh1 at gmail.com>
Date: Thu Aug 14 01:34:47 2014 +0530
Added svg export tool
---
.gitignore | 1 +
examples/node/domstubs.js | 140 ++++++++++++++++++++++++++++++++++++++++++++++
examples/node/pdf2svg.js | 85 ++++++++++++++++++++++++++++
3 files changed, 226 insertions(+)
diff --git a/.gitignore b/.gitignore
index 516970e..421e6f4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@ tags
.DS_Store
Makefile
node_modules/
+examples/node/svgdump/
diff --git a/examples/node/domstubs.js b/examples/node/domstubs.js
new file mode 100644
index 0000000..dafc758
--- /dev/null
+++ b/examples/node/domstubs.js
@@ -0,0 +1,140 @@
+/* -*- 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/ */
+
+var sheet = {
+ cssRules: [],
+ insertRule: function(rule) {
+ this.cssRules.push(rule);
+ },
+};
+
+var style = {
+ sheet: sheet,
+};
+
+function xmlEncode(s){
+ var i = 0, ch;
+ while (i < s.length && (ch = s[i]) !== '&' && ch !== '<' &&
+ ch !== '\"' && ch !== '\n' && ch !== '\r' && ch !== '\t') {
+ i++;
+ }
+ if (i >= s.length) {
+ return s;
+ }
+ var buf = s.substring(0, i);
+ while (i < s.length) {
+ ch = s[i++];
+ switch (ch) {
+ case '&':
+ buf += '&';
+ break;
+ case '<':
+ buf += '<';
+ break;
+ case '\"':
+ buf += '"';
+ break;
+ case '\n':
+ buf += '
';
+ break;
+ case '\r':
+ buf += '
';
+ break;
+ case '\t':
+ buf += '	';
+ break;
+ default:
+ buf += ch;
+ break;
+ }
+ }
+ return buf;
+}
+
+global.btoa = function btoa(chars) {
+ var digits =
+ 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
+ var buffer = '';
+ var i, n;
+ for (i = 0, n = chars.length; i < n; i += 3) {
+ var b1 = chars.charCodeAt(i) & 0xFF;
+ var b2 = chars.charCodeAt(i + 1) & 0xFF;
+ var b3 = chars.charCodeAt(i + 2) & 0xFF;
+ var d1 = b1 >> 2, d2 = ((b1 & 3) << 4) | (b2 >> 4);
+ var d3 = i + 1 < n ? ((b2 & 0xF) << 2) | (b3 >> 6) : 64;
+ var d4 = i + 2 < n ? (b3 & 0x3F) : 64;
+ buffer += (digits.charAt(d1) + digits.charAt(d2) +
+ digits.charAt(d3) + digits.charAt(d4));
+ }
+ return buffer;
+};
+
+function DOMElement(name) {
+ this.nodeName = name;
+ this.childNodes = [];
+ this.attributes = {};
+ this.textContent = '';
+}
+
+DOMElement.prototype = {
+
+ setAttributeNS: function DOMElement_setAttributeNS(NS, name, value) {
+ value = value || '';
+ value = xmlEncode(value);
+ this.attributes[name] = value;
+ },
+
+ appendChild: function DOMElement_appendChild(element) {
+ var childNodes = this.childNodes;
+ if (childNodes.indexOf(element) === -1) {
+ childNodes.push(element);
+ }
+ },
+
+ toString: function DOMElement_toString() {
+ var attrList = [];
+ for (i in this.attributes) {
+ attrList.push(i + '="' + xmlEncode(this.attributes[i]) + '"');
+ }
+
+ if (this.nodeName === 'svg:tspan') {
+ var encText = xmlEncode(this.textContent);
+ return '<' + this.nodeName + ' ' + attrList.join(' ') + '>' +
+ encText + '</' + this.nodeName + '>';
+ } else if (this.nodeName === 'svg:svg') {
+ var ns = 'xmlns:xlink="http://www.w3.org/1999/xlink" ' +
+ 'xmlns:svg="http://www.w3.org/2000/svg"'
+ return '<' + this.nodeName + ' ' + ns + ' ' + attrList.join(' ') + '>' +
+ this.childNodes.join('') + '</' + this.nodeName + '>';
+ } else {
+ return '<' + this.nodeName + ' ' + attrList.join(' ') + '>' +
+ this.childNodes.join('') + '</' + this.nodeName + '>';
+ }
+ },
+
+ cloneNode: function DOMElement_cloneNode() {
+ var newNode = new DOMElement(this.nodeName);
+ newNode.childNodes = this.childNodes;
+ newNode.attributes = this.attributes;
+ newNode.textContent = this.textContent;
+ return newNode;
+ },
+}
+
+global.document = {
+ childNodes : [],
+
+ getElementById: function (id) {
+ if (id === 'PDFJS_FONT_STYLE_TAG') {
+ return style;
+ }
+ },
+
+ createElementNS: function (NS, element) {
+ var elObject = new DOMElement(element);
+ return elObject;
+ },
+};
+
diff --git a/examples/node/pdf2svg.js b/examples/node/pdf2svg.js
new file mode 100644
index 0000000..6da69b1
--- /dev/null
+++ b/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);
+});
+
--
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