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modul1
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alexadam
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606ed53f2a
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11 changed files with 605 additions and 64 deletions
238
chapter-editor/saveEbook.js
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238
chapter-editor/saveEbook.js
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var cssFileName = 'ebook.css';
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var pageName = 'ebook.xhtml';
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var ebookName = "ebook-" + document.title + ".epub";
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function getEbookPages() {
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try {
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var allPages = localStorage.getItem('ebook');
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if (!allPages) {
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allPages = [];
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} else {
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allPages = JSON.parse(allPages);
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}
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return allPages;
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} catch (e) {
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console.log(e);
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return [];
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}
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}
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function getImagesIndex(allImgSrc) {
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return Object.keys(allImgSrc).reduce(function(prev, elem, index) {
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return prev + '\n' + '<item href="images/' + allImgSrc[elem] + '" id="img' + index + '" media-type="image/' + getFileExtension(elem) + '"/>';
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}, '');
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}
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function getExternalLinksIndex() { // TODO ???
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return allExternalLinks.reduce(function(prev, elem, index) {
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return prev + '\n' + '<item href="' + elem + '" />';
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}, '');
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}
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function getFileExtension(fileName) {
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var tmpFileName = fileName.split('.').pop();
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if (tmpFileName.indexOf('?') > 0) {
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tmpFileName = tmpFileName.split('?')[0];
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}
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if (tmpFileName.trim() === '') {
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return 'jpg'; //TODO
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}
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return tmpFileName;
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}
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// function walkDOM(main) {
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// var arr = [];
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// var loop = function(main) {
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// do {
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// try {
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// if (allowElements.indexOf(main.tagName.toLowerCase()) > -1) {
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// arr.push(main);
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// }
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// } catch (e) {
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// }
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// if (main.hasChildNodes()) {
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// loop(main.firstChild);
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// }
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// }
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// while (main = main.nextSibling);
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// }
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// loop(main);
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// return arr;
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// }
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function deferredAddZip(url, filename, zip) {
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var deferred = $.Deferred();
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JSZipUtils.getBinaryContent(url, function(err, data) {
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if (err) {
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deferred.reject(err);
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} else {
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zip.file(filename, data, {
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binary: true
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});
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deferred.resolve(data);
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}
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});
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return deferred;
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}
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// http://ebooks.stackexchange.com/questions/1183/what-is-the-minimum-required-content-for-a-valid-epub
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function buildEbook() {
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console.log('Prepare Content...');
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var allPages = getEbookPages();
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var zip = new JSZip();
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zip.file('mimetype', 'application/epub+zip');
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var metaInfFolder = zip.folder("META-INF");
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metaInfFolder.file('container.xml',
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'<?xml version="1.0"?>' +
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'<container version="1.0" xmlns="urn:oasis:names:tc:opendocument:xmlns:container">' +
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'<rootfiles>' +
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'<rootfile full-path="OEBPS/content.opf" media-type="application/oebps-package+xml"/>' +
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'</rootfiles>' +
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'</container>'
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);
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var oebps = zip.folder("OEBPS");
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oebps.file('toc.xhtml',
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'<?xml version="1.0" encoding="utf-8"?>' +
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'<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops">' +
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'<head>' +
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'<title>toc.xhtml</title>' +
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'<link href="' + cssFileName + '" rel="stylesheet" type="text/css" />' +
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'</head>' +
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'<body>' +
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'<nav id="toc" epub:type="toc">' +
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'<h1 class="frontmatter">Table of Contents</h1>' +
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'<ol class="contents">' +
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// '<li><a href="pages/' + pageName + '">' + ebookName + '</a></li>' + // TODO remove
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allPages.reduce(function (prev, page) {
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return prev + '\n' + '<li><a href="pages/' + page.url + '">' + page.title + '</a></li>';
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}, '') +
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'</ol>' +
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'</nav>' +
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'</body>' +
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'</html>'
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);
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oebps.file('toc.ncx',
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'<?xml version="1.0" encoding="UTF-8" ?>' +
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'<ncx version="2005-1" xml:lang="en" xmlns="http://www.daisy.org/z3986/2005/ncx/">' +
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'<head>' +
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'<meta name="dtb:uid" content="isbn"/>' +
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'<meta name="dtb:depth" content="1"/>' +
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'</head>' +
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'<docTitle>' +
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'<text></text>' +
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'</docTitle>' +
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'<navMap>' +
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// '<content src="pages/' + pageName + '" />' + // TODO remove
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allPages.reduce(function (prev, page, index) {
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return prev + '\n' +
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'<navPoint id="ebook' + index + '" playOrder="' + (index+1) + '">' +
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'<navLabel><text>' + page.title + '</text></navLabel>' +
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'<content src="pages/' + page.url + '" />' +
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'</navPoint>';
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}, '') +
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'</navMap>' +
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'</ncx>'
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);
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oebps.file(cssFileName, '');
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var pagesFolder = oebps.folder('pages');
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allPages.forEach(function (page) {
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pagesFolder.file(page.url,
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'<?xml version="1.0" encoding="utf-8"?>' +
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'<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops">' +
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'<head>' +
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'<title>' + page.title + '</title>' +
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'<link href="' + cssFileName + '" rel="stylesheet" type="text/css" />' +
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'</head><body>' +
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page.content +
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'</body></html>'
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);
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});
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oebps.file('content.opf',
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'<?xml version="1.0" encoding="UTF-8" ?>' +
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'<package xmlns="http://www.idpf.org/2007/opf" xmlns:dc="http://purl.org/dc/elements/1.1/" unique-identifier="db-id" version="3.0">' +
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'<metadata>' +
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'<dc:title id="t1">Title</dc:title>' +
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'<dc:identifier id="db-id">isbn</dc:identifier>' +
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'<meta property="dcterms:modified">2014-03-27T09:14:09Z</meta>' +
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'<dc:language>en</dc:language>' +
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'</metadata>' +
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'<manifest>' +
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'<item id="toc" properties="nav" href="toc.xhtml" media-type="application/xhtml+xml" />' +
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'<item id="ncx" href="toc.ncx" media-type="application/x-dtbncx+xml" />' +
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'<item id="template_css" href="' + cssFileName + '" media-type="text/css" />' +
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// '<item id="ebook" href="pages/' + pageName + '" media-type="application/xhtml+xml" />' + //properties="remote-resources" // TODO remove
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allPages.reduce(function (prev, page, index) {
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return prev + '\n' + '<item id="ebook' + index + '" href="pages/' + page.url + '" media-type="application/xhtml+xml" />';
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}, '') +
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allPages.reduce(function (prev, page, index) {
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return prev + '\n' + getImagesIndex(page.imgs);
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}, '') +
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// getExternalLinksIndex() +
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'</manifest>' +
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'<spine toc="ncx">' +
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// '<itemref idref="ebook" />' + // TODO remove
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allPages.reduce(function (prev, page, index) {
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return prev + '\n' + '<itemref idref="ebook' + index + '" />';
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}, '') +
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'</spine>' +
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'</package>'
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);
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///////////////
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///////////////
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var imgs = oebps.folder("images");
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var imgsPromises = [];
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allPages.forEach(function (page) {
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Object.keys(page.imgs).forEach(function(imgSrc, index) {
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var tmpDeffered = deferredAddZip(imgSrc, page.imgs[imgSrc], imgs);
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imgsPromises.push(tmpDeffered);
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});
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});
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var done = false;
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$.when.apply($, imgsPromises).done(function() {
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done = true;
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zip.generateAsync({
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type: "blob"
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})
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.then(function(content) {
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saveAs(content, ebookName);
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});
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console.log("done !");
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}).fail(function(err) {
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alert(err);
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});
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setTimeout(function() {
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if (done) {
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return;
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}
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zip.generateAsync({
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type: "blob"
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})
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.then(function(content) {
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saveAs(content, ebookName);
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});
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}, 60000);
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///////////// clean
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localStorage.removeItem('ebook');
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imageIndex = 0;
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}
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