switched to using epub.min.js, deleted now unnecessary dependencies
This commit is contained in:
quarz12
parent
99c05650a1
commit
d0551274dc
1062
cps/static/js/libs/epub-cfi-resolver.js
vendored
1062
cps/static/js/libs/epub-cfi-resolver.js
vendored
File diff suppressed because it is too large
Load Diff
2
cps/static/js/libs/pako.min.js
vendored
2
cps/static/js/libs/pako.min.js
vendored
File diff suppressed because one or more lines are too long
|
|
@ -1,160 +1,19 @@
|
|||
class EpubParser {
|
||||
constructor(filesList) {
|
||||
this.files = filesList;
|
||||
this.parser = new DOMParser();
|
||||
this.opfXml = this.getOPFXml();
|
||||
this.encoder = new TextEncoder();
|
||||
}
|
||||
|
||||
getTotalByteLength() {
|
||||
let size = 0;
|
||||
for (let key of Object.keys(this.files)) {
|
||||
let file = this.files[key];
|
||||
if (file.name.endsWith("html")) {
|
||||
// console.log(file.name + " " + file._data.uncompressedSize)
|
||||
size += file._data.uncompressedSize;
|
||||
}
|
||||
}
|
||||
return size;
|
||||
}
|
||||
|
||||
/**
|
||||
* gets file from files and returns decompressed content as string
|
||||
* @param {string} filename name of the file in filelist
|
||||
* @return {string} string representation of decompressed bytes
|
||||
*/
|
||||
decompress(filename) {
|
||||
return pako.inflate(this.files[filename]._data.compressedContent, {raw: true, to: "string"});
|
||||
}
|
||||
|
||||
getOPFXml() {
|
||||
let content = this.decompress("META-INF/container.xml");
|
||||
let xml = this.parser.parseFromString(content, "text/xml");
|
||||
let path = xml.getElementsByTagName("rootfile")[0].getAttribute("full-path");
|
||||
this.opfDir = path.split("/").slice(0, -1).join("/");
|
||||
return this.parser.parseFromString(this.decompress(path), "text/xml");
|
||||
}
|
||||
|
||||
getSpine() {
|
||||
return Array.from(this.opfXml.getElementsByTagName("spine")[0].children).map(node => node.getAttribute("idref"));
|
||||
}
|
||||
|
||||
/**
|
||||
resolves an idref in content.opf to its file
|
||||
*/
|
||||
resolveIDref(idref) {
|
||||
return this.absPath(this.opfXml.getElementById(idref).getAttribute("href"));
|
||||
}
|
||||
|
||||
/**
|
||||
* returns absolute path from path relative to content.opf
|
||||
* @param path
|
||||
*/
|
||||
absPath(path) {
|
||||
if (this.opfDir) {
|
||||
return [this.opfDir, path].join("/");
|
||||
} else {
|
||||
return path;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
returns the sum of the bytesize of all html files that are located before it in the spine
|
||||
@param {string} filepath path of the current file, also part of the CFI, e.g. here: #epubcfi(/6/2[titlepage]!/4/1:0) it would be "titlepage"
|
||||
*/
|
||||
getPreviousFilesSize(filepath) {
|
||||
let currentFile=this.getIdRef(filepath);
|
||||
let bytesize = 0;
|
||||
for (let file of this.getSpine()) {
|
||||
if (file !== currentFile) {
|
||||
let filepath = this.resolveIDref(file);
|
||||
//ignore non text files
|
||||
if (filepath.endsWith("html")) {
|
||||
// console.log(filepath + " " + bytesize)
|
||||
bytesize += this.files[filepath]._data.uncompressedSize;
|
||||
}
|
||||
} else {
|
||||
break;
|
||||
}
|
||||
}
|
||||
return bytesize;
|
||||
}
|
||||
|
||||
getIdRef(filepath){
|
||||
return this.opfXml.querySelector(`[href="${filepath}"]`).getAttribute("id");
|
||||
}
|
||||
/**
|
||||
* resolves the given cfi to the xml node it points to
|
||||
* @param {string} cfistr epub-cfi string in the form: epubcfi(/6/16[id13]!/4[id2]/4/2[doc12]/1:0)
|
||||
* @return object with attributes "node" and "offset"
|
||||
*/
|
||||
cfiToXmlNode(cfistr) {
|
||||
let cfi = new CFI(cfistr);
|
||||
let cfiPath = cfistr.split("(")[1].split(")")[0];
|
||||
let fileId = cfiPath.split("!")[0].split("[")[1].split("]")[0];
|
||||
return cfi.resolveLast(this.parser.parseFromString(this.decompress(this.resolveIDref(fileId)),"text/xml"));
|
||||
}
|
||||
|
||||
/**
|
||||
takes the node that the cfi points at and counts the bytes of all nodes before that
|
||||
*/
|
||||
getCurrentFileProgress(CFI) {
|
||||
let parse=this.cfiToXmlNode(CFI);
|
||||
let size=parse.offset;
|
||||
let startnode = parse.node//returns text node
|
||||
let xmlnsLength = startnode.parentNode.namespaceURI.length;
|
||||
let prev = startnode.parentNode.previousElementSibling;
|
||||
while (prev !== null) {
|
||||
size += this.encoder.encode(prev.outerHTML).length - xmlnsLength;
|
||||
prev = prev.previousElementSibling;
|
||||
}
|
||||
let parent = startnode.parentElement.parentElement;
|
||||
while (parent !== null) {
|
||||
let parentPrev = parent.previousElementSibling;
|
||||
while (parentPrev !== null) {
|
||||
size += this.encoder.encode(parentPrev.outerHTML).length - xmlnsLength;
|
||||
parentPrev = parentPrev.previousElementSibling;
|
||||
}
|
||||
parent = parent.parentElement;
|
||||
}
|
||||
return size;
|
||||
}
|
||||
|
||||
/**
|
||||
* @param currentFile filepath
|
||||
* @param CFI
|
||||
* @return {number} percentage as decimal
|
||||
*/
|
||||
getProgress(currentFile, CFI) {
|
||||
let percentage = (this.getPreviousFilesSize(currentFile) + this.getCurrentFileProgress(CFI))/this.getTotalByteLength();
|
||||
if (percentage === Infinity) {
|
||||
return 0;
|
||||
} else if (percentage>1){
|
||||
return 1;
|
||||
}
|
||||
else{
|
||||
return percentage;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
//wait until variable is assigned a value
|
||||
function waitFor(variable, callback) {
|
||||
const interval = setInterval(function() {
|
||||
if (variable!==undefined) {
|
||||
clearInterval(interval);
|
||||
callback();
|
||||
}
|
||||
}, 200);
|
||||
}
|
||||
|
||||
/**
|
||||
* returns progress percentage
|
||||
* @return {number}
|
||||
* waits until queue is finished, meaning the book is done loading
|
||||
* @param callback
|
||||
*/
|
||||
function qFinished(callback){
|
||||
let timeout=setInterval(()=>{
|
||||
if(reader.rendition.q.running===undefined)
|
||||
clearInterval(timeout);
|
||||
callback();
|
||||
},300
|
||||
)
|
||||
}
|
||||
|
||||
function calculateProgress(){
|
||||
let data=reader.rendition.currentLocation().end;
|
||||
return Math.round(epubParser.getProgress(data.href,data.cfi)*100);
|
||||
let data=reader.rendition.location.end;
|
||||
return Math.round(epub.locations.percentageFromCfi(data.cfi)*100);
|
||||
}
|
||||
|
||||
// register new event emitter locationchange that fires on urlchange
|
||||
|
|
@ -179,13 +38,21 @@ function calculateProgress(){
|
|||
});
|
||||
})();
|
||||
|
||||
var epubParser;
|
||||
waitFor(reader.book,()=>{
|
||||
epubParser = new EpubParser(reader.book.archive.zip.files);
|
||||
});
|
||||
let progressDiv=document.getElementById("progress");
|
||||
|
||||
window.addEventListener('locationchange',()=>{
|
||||
let newPos=calculateProgress();
|
||||
progressDiv.textContent=newPos+"%";
|
||||
});
|
||||
|
||||
var epub=ePub(calibre.bookUrl)
|
||||
|
||||
let progressDiv=document.getElementById("progress");
|
||||
|
||||
qFinished(()=>{
|
||||
epub.locations.generate().then(()=> {
|
||||
window.dispatchEvent(new Event('locationchange'))
|
||||
});
|
||||
})
|
||||
|
||||
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -152,8 +152,8 @@
|
|||
<script src="{{ url_for('static', filename='js/libs/screenfull.min.js') }}"></script>
|
||||
<script src="{{ url_for('static', filename='js/libs/reader.min.js') }}"></script>
|
||||
<script src="{{ url_for('static', filename='js/reading/epub.js') }}"></script>
|
||||
<script src="{{ url_for('static', filename='js/libs/epub.min.js') }}"></script>
|
||||
<script src="{{ url_for('static', filename='js/reading/epub-progress.js') }}"></script>
|
||||
<script src="{{ url_for('static', filename='js/libs/pako.min.js') }}"></script>
|
||||
<script src="{{ url_for('static', filename='js/libs/epub-cfi-resolver.js') }}"></script>
|
||||
|
||||
</body>
|
||||
</html>
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user