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alexadam 2016-08-18 13:42:27 +03:00
parent 9f2b1f1edb
commit b43ce9d6f6
21 changed files with 10 additions and 6 deletions
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web-extension/saveEbook.js Normal file
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var cssFileName = 'ebook.css';
function getImagesIndex(allImages) {
return allImages.reduce(function(prev, elem, index) {
return prev + '\n' + '<item href="images/' + elem.filename + '" id="img' + index + '" media-type="image/' + getFileExtension(elem.filename) + '"/>';
}, '');
}
function getExternalLinksIndex() { // TODO
return allExternalLinks.reduce(function(prev, elem, index) {
return prev + '\n' + '<item href="' + elem + '" />';
}, '');
}
function buildEbookFromChapters() {
getEbookPages(_buildEbook);
}
function buildEbook(allPages) {
_buildEbook(allPages);
}
// http://ebooks.stackexchange.com/questions/1183/what-is-the-minimum-required-content-for-a-valid-epub
function _buildEbook(allPages) {
allPages = allPages.filter(function(page) {
return page !== null;
});
console.log('Prepare Content...');
ebookName = allPages[0].title + '.epub';
if (allPages[0].type === 'title') {
allPages.shift();
}
var zip = new JSZip();
zip.file('mimetype', 'application/epub+zip');
var metaInfFolder = zip.folder("META-INF");
metaInfFolder.file('container.xml',
'<?xml version="1.0"?>' +
'<container version="1.0" xmlns="urn:oasis:names:tc:opendocument:xmlns:container">' +
'<rootfiles>' +
'<rootfile full-path="OEBPS/content.opf" media-type="application/oebps-package+xml"/>' +
'</rootfiles>' +
'</container>'
);
var oebps = zip.folder("OEBPS");
oebps.file('toc.xhtml',
'<?xml version="1.0" encoding="utf-8"?>' +
'<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops">' +
'<head>' +
'<title>toc.xhtml</title>' +
'<link href="' + cssFileName + '" rel="stylesheet" type="text/css" />' +
'</head>' +
'<body>' +
'<nav id="toc" epub:type="toc">' +
'<h1 class="frontmatter">Table of Contents</h1>' +
'<ol class="contents">' +
allPages.reduce(function(prev, page) {
return prev + '\n' + '<li><a href="pages/' + page.url + '">' + page.title + '</a></li>';
}, '') +
'</ol>' +
'</nav>' +
'</body>' +
'</html>'
);
oebps.file('toc.ncx',
'<?xml version="1.0" encoding="UTF-8" ?>' +
'<ncx version="2005-1" xml:lang="en" xmlns="http://www.daisy.org/z3986/2005/ncx/">' +
'<head>' +
'<meta name="dtb:uid" content="isbn"/>' +
'<meta name="dtb:depth" content="1"/>' +
'</head>' +
'<docTitle>' +
'<text></text>' +
'</docTitle>' +
'<navMap>' +
allPages.reduce(function(prev, page, index) {
return prev + '\n' +
'<navPoint id="ebook' + index + '" playOrder="' + (index + 1) + '">' +
'<navLabel><text>' + page.title + '</text></navLabel>' +
'<content src="pages/' + page.url + '" />' +
'</navPoint>';
}, '') +
'</navMap>' +
'</ncx>'
);
oebps.file(cssFileName, '');
var pagesFolder = oebps.folder('pages');
allPages.forEach(function(page) {
pagesFolder.file(page.url,
'<?xml version="1.0" encoding="utf-8"?>' +
'<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops">' +
'<head>' +
'<title>' + page.title + '</title>' +
'<link href="' + cssFileName + '" rel="stylesheet" type="text/css" />' +
'</head><body>' +
page.content +
'</body></html>'
);
});
oebps.file('content.opf',
'<?xml version="1.0" encoding="UTF-8" ?>' +
'<package xmlns="http://www.idpf.org/2007/opf" xmlns:dc="http://purl.org/dc/elements/1.1/" unique-identifier="db-id" version="3.0">' +
'<metadata>' +
'<dc:title id="t1">Title</dc:title>' +
'<dc:identifier id="db-id">isbn</dc:identifier>' +
'<meta property="dcterms:modified">2014-03-27T09:14:09Z</meta>' +
'<dc:language>en</dc:language>' +
'</metadata>' +
'<manifest>' +
'<item id="toc" properties="nav" href="toc.xhtml" media-type="application/xhtml+xml" />' +
'<item id="ncx" href="toc.ncx" media-type="application/x-dtbncx+xml" />' +
'<item id="template_css" href="' + cssFileName + '" media-type="text/css" />' +
allPages.reduce(function(prev, page, index) {
return prev + '\n' + '<item id="ebook' + index + '" href="pages/' + page.url + '" media-type="application/xhtml+xml" />';
}, '') +
allPages.reduce(function(prev, page, index) {
return prev + '\n' + getImagesIndex(page.images);
}, '') +
// getExternalLinksIndex() +
'</manifest>' +
'<spine toc="ncx">' +
allPages.reduce(function(prev, page, index) {
return prev + '\n' + '<itemref idref="ebook' + index + '" />';
}, '') +
'</spine>' +
'</package>'
);
///////////////
var imgsFolder = oebps.folder("images");
allPages.forEach(function(page) {
for (var i = 0; i < page.images.length; i++) {
var tmpImg = page.images[i];
imgsFolder.file(tmpImg.filename, tmpImg.data, {
base64: true
});
}
});
var done = false;
zip.generateAsync({
type: "blob"
})
.then(function(content) {
done = true;
console.log("done !");
saveAs(content, ebookName);
});
setTimeout(function() {
if (done) {
return;
}
zip.generateAsync({
type: "blob"
})
.then(function(content) {
saveAs(content, ebookName);
});
}, 60000);
removeEbook();
}