[See the full library documentation on Docs.rs.](https://docs.rs/epub-builder)

A library to generate EPUB files.

The purpose for this library is to make it easier to generate EPUB files:
it should take care of most of the boilerplate for you, leaving you only
with the task of filling the actual content.

## Usage

Add this in your `Cargo.toml` file:

```toml
[dependencies]
epub-builder = "0.6"
```

## Example

```rust
use epub_builder::EpubBuilder;
use epub_builder::Result;
use epub_builder::ZipLibrary;
use epub_builder::EpubContent;
use epub_builder::ReferenceType;
use epub_builder::TocElement;

use std::io::Write;

fn run() -> Result<Vec<u8>> {
    // Some dummy content to fill our books
    let dummy_content = "Dummy content. This should be valid XHTML if you want a valid EPUB!";
    let dummy_image = "Not really a PNG image";
    let dummy_css = "body { background-color: pink }";

    let mut output = Vec::<u8>::new();

    // Create a new EpubBuilder using the zip library
    EpubBuilder::new(ZipLibrary::new()?)?
    // Set some metadata
        .metadata("author", "Joan Doe")?
        .metadata("title", "Dummy Book")?
    // Set the stylesheet (create a "stylesheet.css" file in EPUB that is used by some generated files)
        .stylesheet(dummy_css.as_bytes())?
    // Add a image cover file
        .add_cover_image("cover.png", dummy_image.as_bytes(), "image/png")?
    // Add a resource that is not part of the linear document structure
        .add_resource("some_image.png", dummy_image.as_bytes(), "image/png")?
    // Add a cover page
        .add_content(EpubContent::new("cover.xhtml", dummy_content.as_bytes())
                     .title("Cover")
                     .reftype(ReferenceType::Cover))?
    // Add a title page
        .add_content(EpubContent::new("title.xhtml", dummy_content.as_bytes())
                     .title("Title")
                     .reftype(ReferenceType::TitlePage))?
    // Add a chapter, mark it as beginning of the "real content"
        .add_content(EpubContent::new("chapter_1.xhtml", dummy_content.as_bytes())
                     .title("Chapter 1")
                     .reftype(ReferenceType::Text))?
    // Add a second chapter; this one has more toc information about its internal structure
        .add_content(EpubContent::new("chapter_2.xhtml", dummy_content.as_bytes())
                     .title("Chapter 2")
                     .child(TocElement::new("chapter_2.xhtml#1", "Chapter 2, section 1")))?
    // Add a section. Since its level is set to 2, it will be attached to the previous chapter.
        .add_content(EpubContent::new("section.xhtml", dummy_content.as_bytes())
                     .title("Chapter 2, section 2")
                     .level(2))?
    // Add a chapter without a title, which will thus not appear in the TOC.
        .add_content(EpubContent::new("notes.xhtml", dummy_content.as_bytes()))?
    // Generate a toc inside of the document, that will be part of the linear structure.
        .inline_toc()
    // Finally, write the EPUB file to a writer. It could be a `Vec<u8>`, a file,
    // `stdout` or whatever you like, it just needs to implement the `std::io::Write` trait.
        .generate(&mut output)?;
    Ok(output)
}

fn main() {
    let _output = run().expect("Unable to create an epub document");
}
```

## Features

`epub-builder`'s aim is to make EPUB generation simpler. It takes care of zipping
the files and generate the following ones:

* `mimetype`
* `toc.ncx`
* `nav.xhtml`
* `manifest.xml`
* `content.opf`
* `com.apple.ibooks.display-options.xml`.

It also tries to make it easier to have a correct table of contents, and optionally
generate an inline one in the document.

Supported EPUB versions:

* 2.0.1 (default)
* 3.0.1

### Missing features

There are various EPUB features that `epub-builder` doesn't handle. Particularly,
there are some metadata that could be better
handled (e.g. support multiple authors, multiple languages in the document and so on).

There are also various things that aren't in the scope of this library: it doesn't
provide a default CSS, templates for your XHTML content and so on. This is left to
libraries or applications using it.

## Conditional compilation

EPUB files are Zip files, so we need to zip. By default, this library provides
wrappers around both the [Rust zip library](https://crates.io/crates/zip) and calls
to the `zip` command that may (or may not) be installed on your system.

It is possible to disable the compilation (and the dependencies) of either of these
wrappers, using `no-default-features`. (If you don't enable at least one of them this
library will be pretty useless).

## License

This is free software, published under the [Mozilla Public License,
version 2.0](https://www.mozilla.org/en-US/MPL/2.0/).

## ChangeLog

See the [ChangeLog file](ChangeLog.md).