vrr/save-as-ebook
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alexadam 2016-07-15 19:18:46 +03:00
parent 30389f03b6
commit 1497aeafa2
1 changed files with 116 additions and 25 deletions
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135
test.js
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@ -7,8 +7,12 @@
var cssFileName = 'ebook.css';
var pageName = 'ebook.xhtml';
var ebookName = "ebook-" + document.title + ".epub";
var imgSrcRegex = /<img.*src="([^"]+)"/gi;
// var allImgSrc = [];
// var allImgDest = [];
var allImgSrc = {};
console.log('mmerge');
console.log('Hello');
var pageSrc = document.getElementsByTagName('body')[0].innerHTML;
var pageSrc = document.getElementsByTagName('article')[0].innerHTML;
@ -91,6 +95,11 @@ function prepareEbookContent(rawContent) {
// rawContent = rawContent.replace(/<\/.*>/gi, '</p>');
// rawContent = rawContent.replace(/<[^<>]+>/gi, '');
extractImgs(rawContent);
rawContent = replaceImgs(rawContent);
alert();
return '<?xml version="1.0" encoding="utf-8"?>' +
'<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops">' +
'<head>' +
@ -101,6 +110,59 @@ function prepareEbookContent(rawContent) {
'</body></html>';
}
function extractImgs(rawContent) {
$(rawContent).find('img').each(function (index, elem) {
var imgsrc = $(elem).attr('src');
try {
if (imgsrc.indexOf('http') === 0) {
allImgSrc[imgsrc] = 'img-' + index + '.' + getFileExtension(imgsrc);
}
} catch (e) {
}
});
}
function replaceImgs(rawContent) {
// Object.keys(allImgSrc).forEach(function (imgsrc) {
// rawContent = rawContent.replace(new RegExp(imgsrc, 'gi'), allImgSrc[imgsrc]);
// });
var keys = Object.keys(allImgSrc);
for (var i = 0; i < keys.length; i++) {
rawContent = rawContent.replace(keys[i], 'images/' + allImgSrc[keys[i]]);
}
return rawContent;
}
function getImagesIndex() {
return Object.keys(allImgSrc).reduce(function (prev, elem, index) {
return prev + '\n' + '<item href="images/'+allImgSrc[elem]+'" id="img'+index+'" media-type="image/'+getFileExtension(elem)+'"/>';
}, '');
}
function getFileExtension(fileName) {
var tmpFileName = fileName.split('.').pop();
if (tmpFileName.indexOf('?') > 0) {
tmpFileName = tmpFileName.split('?')[0];
}
if (tmpFileName.trim() === '') {
return 'jpg'; //TODO
}
return tmpFileName;
}
function deferredAddZip(url, filename, zip) {
var deferred = $.Deferred();
JSZipUtils.getBinaryContent(url, function (err, data) {
if(err) {
deferred.reject(err);
} else {
zip.file(filename, data, {binary:true});
deferred.resolve(data);
}
});
return deferred;
}
// http://ebooks.stackexchange.com/questions/1183/what-is-the-minimum-required-content-for-a-valid-epub
function buildEbook(ebookContent) {
var zip = new JSZip();
@ -119,27 +181,6 @@ function buildEbook(ebookContent) {
var oebps = zip.folder("OEBPS");
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" />' +
'<item id="ebook" href="' + pageName + '" media-type="application/xhtml+xml" />' +
'</manifest>' +
'<spine toc="ncx">' +
'<itemref idref="ebook" />' +
'</spine>' +
'</package>'
);
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">' +
@ -183,9 +224,59 @@ function buildEbook(ebookContent) {
prepareEbookContent(ebookContent)
);
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" />' +
'<item id="ebook" href="' + pageName + '" media-type="application/xhtml+xml" />' +
getImagesIndex() +
'</manifest>' +
'<spine toc="ncx">' +
'<itemref idref="ebook" />' +
'</spine>' +
'</package>'
);
///////////////
///////////////
var imgs = oebps.folder("images");
var imgsPromises = [];
// allImgSrc.forEach(function (imgSrc, index) {
Object.keys(allImgSrc).forEach(function (imgSrc, index) {
var tmpDeffered = deferredAddZip(imgSrc, allImgSrc[imgSrc], imgs);
imgsPromises.push(tmpDeffered);
});
var done = false;
$.when.apply($, imgsPromises).done(function () {
done = true;
zip.generateAsync({type:"blob"})
.then(function(content) {
saveAs(content, ebookName);
});
console.log("done !");
}).fail(function (err) {
alert(err);
});
setTimeout(function () {
if (done) {
return;
}
zip.generateAsync({type:"blob"})
.then(function(content) {
saveAs(content, ebookName);
});
}, 5000);
}