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https://github.com/julien-c/epub

node.js epub reader
https://github.com/julien-c/epub

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node.js epub reader

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# epub [![Build Status](https://travis-ci.org/julien-c/epub.svg?branch=master)](https://travis-ci.org/julien-c/epub)

**epub** is a node.js module to parse EPUB electronic book files.

**NB!** Only ebooks in UTF-8 are currently supported!.

## Installation

npm install epub

Or, if you want a pure-JS version (useful if used in a Node-Webkit app for example):

npm install epub --no-optional

## Usage

```js
import EPub from 'epub'
const epub = new EPub(pathToFile, imageWebRoot, chapterWebRoot)
```

Where

* **pathToFile** is the file path to an EPUB file
* **imageWebRoot** is the prefix for image URL's. If it's */images/* then the actual URL (inside chapter HTML `` blocks) is going to be */images/IMG_ID/IMG_FILENAME*, `IMG_ID` can be used to fetch the image form the ebook with `getImage`. Default: `/images/`
* **chapterWebRoot** is the prefix for chapter URL's. If it's */chapter/* then the actual URL (inside chapter HTML `` links) is going to be */chapters/CHAPTER_ID/CHAPTER_FILENAME*, `CHAPTER_ID` can be used to fetch the image form the ebook with `getChapter`. Default: `/links/`

Before the contents of the ebook can be read, it must be opened (`EPub` is an `EventEmitter`).

```js
epub.on('end', function() {
// epub is initialized now
console.log(epub.metadata.title)

epub.getChapter('chapter_id', (err, text) => {})
})

epub.parse()
```

## metadata

Property of the *epub* object that holds several metadata fields about the book.

```js
epub.metadata
```

Available fields:

* **creator** Author of the book (if multiple authors, then the first on the list) (*Lewis Carroll*)
* **creatorFileAs** Author name on file (*Carroll, Lewis*)
* **title** Title of the book (*Alice's Adventures in Wonderland*)
* **language** Language code (*en* or *en-us* etc.)
* **subject** Topic of the book (*Fantasy*)
* **date** creation of the file (*2006-08-12*)
* **description**

## flow

*flow* is a property of the *epub* object and holds the actual list of chapters (TOC is just an indication and can link to a # url inside a chapter file)

```js
epub.flow.forEach(chapter => {
console.log(chapter.id)
})
```

Chapter `id` is needed to load the chapters `getChapter`

## toc
*toc* is a property of the *epub* object and indicates a list of titles/urls for the TOC. Actual chapter and it's ID needs to be detected with the `href` property

## getChapter(chapter_id, callback)

Load chapter text from the ebook.

```js
epub.getChapter('chapter1', (error, text) => {})
```

## getChapterRaw(chapter_id, callback)

Load raw chapter text from the ebook.

## getImage(image_id, callback)

Load image (as a Buffer value) from the ebook.

```js
epub.getImage('image1', (error, img, mimeType) => {})
```

## getFile(file_id, callback)

Load any file (as a Buffer value) from the ebook.

```js
epub.getFile('css1', (error, data, mimeType) => {})
```