var cssFileName = 'ebook.css';
var pageName = 'ebook.xhtml';
var ebookName = "ebook-" + document.title + ".epub";
function getEbookPages() {
try {
var allPages = localStorage.getItem('ebook');
if (!allPages) {
allPages = [];
} else {
allPages = JSON.parse(allPages);
}
return allPages;
} catch (e) {
console.log(e);
return [];
}
}
function getImgDownloadUrl(baseUrl, imgSrc) {
if (imgSrc.indexOf('http') !== 0) {
console.log(baseUrl + '/' + imgSrc);
return baseUrl + '/' + imgSrc;
}
console.log(imgSrc);
return imgSrc;
}
function getImagesIndex(allImgSrc) {
return Object.keys(allImgSrc).reduce(function(prev, elem, index) {
return prev + '\n' + ' ';
}, '');
}
function getExternalLinksIndex() { // TODO ???
return allExternalLinks.reduce(function(prev, elem, index) {
return prev + '\n' + ' ';
}, '');
}
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 walkDOM(main) {
// var arr = [];
// var loop = function(main) {
// do {
// try {
// if (allowElements.indexOf(main.tagName.toLowerCase()) > -1) {
// arr.push(main);
// }
// } catch (e) {
// }
// if (main.hasChildNodes()) {
// loop(main.firstChild);
// }
// }
// while (main = main.nextSibling);
// }
// loop(main);
// return arr;
// }
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() {
console.log('Prepare Content...');
var allPages = getEbookPages();
var zip = new JSZip();
zip.file('mimetype', 'application/epub+zip');
var metaInfFolder = zip.folder("META-INF");
metaInfFolder.file('container.xml',
'' +
'' +
'' +
'' +
'' +
''
);
var oebps = zip.folder("OEBPS");
oebps.file('toc.xhtml',
'' +
'' +
'
' +
'toc.xhtml' +
'' +
'' +
'' +
'' +
'' +
''
);
oebps.file('toc.ncx',
'' +
'' +
'' +
'' +
'' +
'' +
'' +
'' +
'' +
'' +
// '' + // TODO remove
allPages.reduce(function(prev, page, index) {
return prev + '\n' +
'' +
'' + page.title + '' +
'' +
'';
}, '') +
'' +
''
);
oebps.file(cssFileName, '');
var pagesFolder = oebps.folder('pages');
allPages.forEach(function(page) {
pagesFolder.file(page.url,
'' +
'' +
'' +
'' + page.title + '' +
'' +
'' +
page.content +
''
);
});
oebps.file('content.opf',
'' +
'' +
'' +
'Title' +
'isbn' +
'2014-03-27T09:14:09Z' +
'en' +
'' +
'' +
' ' +
' ' +
' ' +
// ' ' + //properties="remote-resources" // TODO remove
allPages.reduce(function(prev, page, index) {
return prev + '\n' + ' ';
}, '') +
allPages.reduce(function(prev, page, index) {
return prev + '\n' + getImagesIndex(page.imgs);
}, '') +
// getExternalLinksIndex() +
'' +
'' +
// '' + // TODO remove
allPages.reduce(function(prev, page, index) {
return prev + '\n' + '';
}, '') +
'' +
''
);
///////////////
///////////////
var imgs = oebps.folder("images");
var imgsPromises = [];
allPages.forEach(function(page) {
Object.keys(page.imgs).forEach(function(imgSrc, index) {
console.log('AICI', imgSrc, getImgDownloadUrl(page.baseUrl, imgSrc));
var tmpDeffered = deferredAddZip(getImgDownloadUrl(page.baseUrl, imgSrc), page.imgs[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);
});
}, 60000);
///////////// clean
localStorage.removeItem('ebook');
imageIndex = 0;
}