Updated for JSHint
This commit is contained in:
andris9
parent
ea226be4c4
commit
44df08632e
3
README.md
Normal file
3
README.md
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@ -0,0 +1,3 @@
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#epub
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**epub** is a node.js module to parse EPUB electronic book files.
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115
epub.js
115
epub.js
@ -3,11 +3,7 @@ var ZipFile = require("zipfile").ZipFile,
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utillib = require("util"),
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EventEmitter = require('events').EventEmitter;
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//TODO: Cache parsed data to DB
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// export
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module.exports = EPub;
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//TODO: Cache parsed data
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/**
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* new EPub(fname[, imageroot][, linkroot])
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@ -41,8 +37,12 @@ function EPub(fname, imageroot, linkroot){
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this.imageroot = (imageroot || "/images/").trim();
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this.linkroot = (linkroot || "/links/").trim();
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if(this.imageroot.substr(-1)!="/")this.imageroot+="/";
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if(this.linkroot.substr(-1)!="/")this.linkroot+="/";
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if (this.imageroot.substr(-1) != "/") {
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this.imageroot += "/";
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}
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if (this.linkroot.substr(-1) != "/") {
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this.linkroot += "/";
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}
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}
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utillib.inherits(EPub, EventEmitter);
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@ -63,7 +63,7 @@ EPub.prototype.parse = function(){
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this.toc = [];
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this.open();
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}
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};
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/**
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* EPub#open() -> undefined
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@ -72,7 +72,7 @@ EPub.prototype.parse = function(){
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* and runs mime type check
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**/
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EPub.prototype.open = function () {
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try{
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try {
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this.zip = new ZipFile(this.filename);
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} catch (E) {
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this.emit("error", new Error("Invalid/missing file"));
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@ -85,7 +85,7 @@ EPub.prototype.open = function(){
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}
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this.checkMimeType();
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}
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};
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/**
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* EPub#checkMimeType() -> undefined
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@ -94,7 +94,9 @@ EPub.prototype.open = function(){
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* are "application/epub+zip". On success runs root file check.
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**/
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EPub.prototype.checkMimeType = function () {
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for(var i=0, len = this.zip.names.length; i<len; i++){
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var i, len;
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for (i = 0, len = this.zip.names.length; i < len; i++) {
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if (this.zip.names[i].toLowerCase() == "mimetype") {
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this.mimeFile = this.zip.names[i];
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break;
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@ -118,7 +120,7 @@ EPub.prototype.checkMimeType = function(){
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this.getRootFiles();
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}).bind(this));
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}
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};
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/**
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* EPub#getRootFiles() -> undefined
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@ -128,7 +130,8 @@ EPub.prototype.checkMimeType = function(){
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* On success calls the rootfile parser
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**/
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EPub.prototype.getRootFiles = function () {
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for(var i=0, len = this.zip.names.length; i<len; i++){
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var i, len;
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for (i = 0, len = this.zip.names.length; i < len; i++) {
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if (this.zip.names[i].toLowerCase() == "meta-inf/container.xml") {
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this.containerFile = this.zip.names[i];
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break;
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@ -155,11 +158,11 @@ EPub.prototype.getRootFiles = function(){
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}
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var rootfile = result.rootfiles.rootfile,
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filename = false;
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filename = false, i, len;
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if (Array.isArray(rootfile)) {
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for(var i=0, len = rootfile.length; i<len; i++){
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for (i = 0, len = rootfile.length; i < len; i++) {
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if (rootfile[i]["@"]["media-type"] &&
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rootfile[i]["@"]["media-type"] == "application/oebps-package+xml" &&
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rootfile[i]["@"]["full-path"]) {
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@ -182,7 +185,7 @@ EPub.prototype.getRootFiles = function(){
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}
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for(var i=0, len = this.zip.names.length; i<len; i++){
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for (i = 0, len = this.zip.names.length; i < len; i++) {
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if (this.zip.names[i].toLowerCase() == filename) {
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this.rootFile = this.zip.names[i];
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break;
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@ -207,7 +210,7 @@ EPub.prototype.getRootFiles = function(){
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}).bind(this));
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}
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};
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/**
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* EPub#handleRootFile() -> undefined
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@ -234,7 +237,7 @@ EPub.prototype.handleRootFile = function(){
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xmlparser.parseString(xml);
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}).bind(this));
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}
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};
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/**
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* EPub#parseRootFile() -> undefined
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@ -244,10 +247,10 @@ EPub.prototype.handleRootFile = function(){
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**/
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EPub.prototype.parseRootFile = function (rootfile) {
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var keys, keyparts, key;
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var i, len, keys, keyparts, key;
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keys = Object.keys(rootfile);
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for(var i=0, len = keys.length; i<len; i++){
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for (i = 0, len = keys.length; i < len; i++) {
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keyparts = keys[i].split(":");
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key = (keyparts.pop() || "").toLowerCase().trim();
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switch (key) {
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@ -268,9 +271,10 @@ EPub.prototype.parseRootFile = function(rootfile){
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if (this.spine.toc) {
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this.parseTOC();
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}else
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} else {
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this.emit("end");
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}
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};
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/**
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* EPub#parseMetadata() -> undefined
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@ -278,10 +282,10 @@ EPub.prototype.parseRootFile = function(rootfile){
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* Parses "metadata" block (book metadata, title, author etc.)
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**/
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EPub.prototype.parseMetadata = function (metadata) {
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var keys, keyparts, key;
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var i, j, len, keys, keyparts, key;
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keys = Object.keys(metadata);
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for(var i=0, len = keys.length; i<len; i++){
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for (i = 0, len = keys.length; i < len; i++) {
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keyparts = keys[i].split(":");
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key = (keyparts.pop() || "").toLowerCase().trim();
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switch (key) {
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@ -339,14 +343,14 @@ EPub.prototype.parseMetadata = function(metadata){
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case "identifier":
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if (metadata[keys[i]]["@"] && metadata[keys[i]]["@"]["opf:scheme"] == "ISBN") {
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this.metadata.ISBN = String(metadata[keys[i]]["#"] || "").trim();
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}else if(metadata[keys[i]]["@"] && metadata[keys[i]]["@"]["id"] && metadata[keys[i]]["@"]["id"].match(/uuid/i)){
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} else if (metadata[keys[i]]["@"] && metadata[keys[i]]["@"].id && metadata[keys[i]]["@"].id.match(/uuid/i)) {
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this.metadata.UUID = String(metadata[keys[i]]["#"] || "").replace('urn:uuid:', '').toUpperCase().trim();
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} else if (Array.isArray(metadata[keys[i]])) {
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for(var j=0; j<metadata[keys[i]].length; j++){
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for (j = 0; j < metadata[keys[i]].length; j++) {
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if (metadata[keys[i]][j]["@"]) {
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if (metadata[keys[i]][j]["@"]["opf:scheme"] == "ISBN") {
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this.metadata.ISBN = String(metadata[keys[i]][j]["#"] || "").trim();
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}else if(metadata[keys[i]][j]["@"]["id"] && metadata[keys[i]][j]["@"]["id"].match(/uuid/i)){
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} else if (metadata[keys[i]][j]["@"].id && metadata[keys[i]][j]["@"].id.match(/uuid/i)) {
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this.metadata.UUID = String(metadata[keys[i]][j]["#"] || "").replace('urn:uuid:', '').toUpperCase().trim();
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}
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}
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@ -355,7 +359,7 @@ EPub.prototype.parseMetadata = function(metadata){
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break;
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}
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}
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}
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};
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/**
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* EPub#parseManifest() -> undefined
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@ -363,12 +367,12 @@ EPub.prototype.parseMetadata = function(metadata){
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* Parses "manifest" block (all items included, html files, images, styles)
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**/
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EPub.prototype.parseManifest = function (manifest) {
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var path = this.rootFile.split("/"), element, path_str;
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var i, len, path = this.rootFile.split("/"), element, path_str;
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path.pop();
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path_str = path.join("/");
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if (manifest.item) {
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for(var i=0, len = manifest.item.length; i<len; i++){
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for (i = 0, len = manifest.item.length; i < len; i++) {
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if (manifest.item[i]['@']) {
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element = manifest.item[i]['@'];
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@ -381,7 +385,7 @@ EPub.prototype.parseManifest = function(manifest){
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}
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}
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}
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}
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};
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/**
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* EPub#parseSpine() -> undefined
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@ -389,7 +393,7 @@ EPub.prototype.parseManifest = function(manifest){
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* Parses "spine" block (all html elements that are shown to the reader)
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**/
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EPub.prototype.parseSpine = function (spine) {
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var path = this.rootFile.split("/"), element, path_s
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var i, len, path = this.rootFile.split("/"), element;
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path.pop();
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if (spine['@'] && spine['@'].toc) {
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@ -397,7 +401,7 @@ EPub.prototype.parseSpine = function(spine){
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}
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if (spine.itemref) {
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for(var i=0, len = spine.itemref.length; i<len; i++){
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for (i = 0, len = spine.itemref.length; i < len; i++) {
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if (spine.itemref[i]['@']) {
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if (element = this.manifest[spine.itemref[i]['@'].idref]) {
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this.spine.contents.push(element);
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@ -405,7 +409,7 @@ EPub.prototype.parseSpine = function(spine){
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}
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}
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}
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}
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};
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/**
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* EPub#parseTOC() -> undefined
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@ -413,11 +417,11 @@ EPub.prototype.parseSpine = function(spine){
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* Parses ncx file for table of contents (title, html file)
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**/
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EPub.prototype.parseTOC = function () {
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var path = this.spine.toc.href.split("/"), id_list = {}, keys;
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var i, len, path = this.spine.toc.href.split("/"), id_list = {}, keys;
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path.pop();
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keys = Object.keys(this.manifest);
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for(var i=0, len = keys.length; i<len; i++){
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for (i = 0, len = keys.length; i < len; i++) {
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id_list[this.manifest[keys[i]].href] = keys[i];
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}
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@ -445,7 +449,7 @@ EPub.prototype.parseTOC = function(){
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xmlparser.parseString(xml);
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}).bind(this));
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}
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};
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/**
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* EPub#walkNavMap(branch, path, id_list,[, level]) -> Array
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@ -461,29 +465,31 @@ EPub.prototype.walkNavMap = function(branch, path, id_list, level){
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level = level || 0;
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// don't go too far
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if(level>7)return [];
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if (level > 7) {
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return [];
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}
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var output = [], element, id, title, order, href;
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var i, len, output = [], element, title, order, href;
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if (!Array.isArray(branch)) {
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branch = [branch];
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}
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for(var i=0, len = branch.length; i<len; i++){
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if(branch[i]["navLabel"]){
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for (i = 0, len = branch.length; i < len; i++) {
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if (branch[i].navLabel) {
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title = (branch[i]["navLabel"] && branch[i]["navLabel"].text || branch[i]["navLabel"] || "").trim();
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title = (branch[i].navLabel && branch[i].navLabel.text || branch[i].navLabel || "").trim();
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order = Number(branch[i]["@"] && branch[i]["@"].playOrder || 0);
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href = (branch[i]["content"] && branch[i]["content"]["@"] && branch[i]["content"]["@"].src || "").trim();
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href = (branch[i].content && branch[i].content["@"] && branch[i].content["@"].src || "").trim();
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element = {
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level: level,
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order: order,
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title: title
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}
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};
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if (href) {
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href = path.concat([href]).join("/")
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href = path.concat([href]).join("/");
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element.href = href;
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if (id_list[element.href]) {
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@ -501,12 +507,12 @@ EPub.prototype.walkNavMap = function(branch, path, id_list, level){
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output.push(element);
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}
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}
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if(branch[i]["navPoint"]){
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output = output.concat(this.walkNavMap(branch[i]["navPoint"], path, id_list, level + 1));
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if (branch[i].navPoint) {
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output = output.concat(this.walkNavMap(branch[i].navPoint, path, id_list, level + 1));
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}
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}
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return output;
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}
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};
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/**
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* EPub#getChapter(id, callback) -> undefined
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@ -517,7 +523,7 @@ EPub.prototype.walkNavMap = function(branch, path, id_list, level){
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* <head> etc. elements. Return only chapters with mime type application/xhtml+xml
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**/
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EPub.prototype.getChapter = function (id, callback) {
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var path = this.rootFile.split("/"), keys = Object.keys(this.manifest);
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var i, len, path = this.rootFile.split("/"), keys = Object.keys(this.manifest);
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path.pop();
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if (this.manifest[id]) {
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@ -562,7 +568,7 @@ EPub.prototype.getChapter = function(id, callback){
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var img = path.concat([b]).join("/").trim(),
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element;
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for(var i=0, len=keys.length; i<len; i++){
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for (i = 0, len = keys.length; i < len; i++) {
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if (this.manifest[keys[i]].href == img) {
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element = this.manifest[keys[i]];
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break;
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@ -584,7 +590,7 @@ EPub.prototype.getChapter = function(id, callback){
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link = path.concat([(linkparts.shift() || "")]).join("/").trim(),
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element;
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for(var i=0, len=keys.length; i<len; i++){
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for (i = 0, len = keys.length; i < len; i++) {
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if (this.manifest[keys[i]].href.split("#")[0] == link) {
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element = this.manifest[keys[i]];
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break;
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@ -613,7 +619,7 @@ EPub.prototype.getChapter = function(id, callback){
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} else {
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callback(new Error("File not found"));
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}
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}
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};
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/**
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@ -623,7 +629,7 @@ EPub.prototype.getChapter = function(id, callback){
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*
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* Finds an image an id. Returns the image as Buffer. Callback gets
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* an error object, image buffer and image content-type.
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* Return only images with mime type image/*
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* Return only images with mime type image
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**/
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EPub.prototype.getImage = function (id, callback) {
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if (this.manifest[id]) {
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@ -643,4 +649,7 @@ EPub.prototype.getImage = function(id, callback){
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} else {
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callback(new Error("File not found"));
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}
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}
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};
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// Expose to the world
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module.exports = EPub;
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Reference in New Issue
Block a user