Fleshed out the docs for the book module

src/bin/watch.rs

@@ -69,8 +69,8 @@ where
     };
 
     // Add the source directory to the watcher
-    if let Err(e) = watcher.watch(book.get_source(), Recursive) {
-        println!("Error while watching {:?}:\n    {:?}", book.get_source(), e);
+    if let Err(e) = watcher.watch(book.source_dir(), Recursive) {
+        println!("Error while watching {:?}:\n    {:?}", book.source_dir(), e);
         ::std::process::exit(0);
     };
 

src/book/init.rs

@@ -19,6 +19,8 @@ pub struct BookBuilder {
 }
 
 impl BookBuilder {
+    /// Create a new `BookBuilder` which will generate a book in the provided
+    /// root directory.
     pub fn new<P: Into<PathBuf>>(root: P) -> BookBuilder {
         BookBuilder {
             root: root.into(),
@@ -34,20 +36,32 @@ impl BookBuilder {
         self
     }
 
+    /// Get the config used by the `BookBuilder`.
+    pub fn config(&self) -> &Config {
+        &self.config
+    }
+
+    /// Should the theme be copied into the generated book (so users can tweak
+    /// it)?
     pub fn copy_theme(&mut self, copy: bool) -> &mut BookBuilder {
         self.copy_theme = copy;
         self
     }
 
+    /// Should we create a `.gitignore` file?
     pub fn create_gitignore(&mut self, create: bool) -> &mut BookBuilder {
         self.create_gitignore = create;
         self
     }
 
-    pub fn config(&self) -> &Config {
-        &self.config
-    }
-
+    /// Generate the actual book. This will:
+    ///
+    /// - Create the directory structure.
+    /// - Stub out some dummy chapters and the `SUMMARY.md`.
+    /// - Create a `.gitignore` (if applicable)
+    /// - Create a themes directory and populate it (if applicable)
+    /// - Generate a `book.toml` file,
+    /// - Then load the book so we can
     pub fn build(&self) -> Result<MDBook> {
         info!("Creating a new book with stub content");
 
@@ -69,18 +83,23 @@ impl BookBuilder {
 
         self.write_book_toml()?;
 
-        let book = MDBook::load(&self.root)
-            .expect("The BookBuilder should always create a valid book. \
-            If you are seeing this it is a bug and should be reported.");
+        match MDBook::load(&self.root) {
+            Ok(book) => Ok(book),
+            Err(e) => {
+                error!("{}", e);
 
-        Ok(book)
+                panic!(
+                    "The BookBuilder should always create a valid book. If you are seeing this it \
+                     is a bug and should be reported."
+                );
+            }
+        }
     }
 
     fn write_book_toml(&self) -> Result<()> {
         debug!("[*] Writing book.toml");
         let book_toml = self.root.join("book.toml");
-        let cfg = toml::to_vec(&self.config)
-            .chain_err(|| "Unable to serialize the config")?;
+        let cfg = toml::to_vec(&self.config).chain_err(|| "Unable to serialize the config")?;
 
         File::create(book_toml)
             .chain_err(|| "Couldn't create book.toml")?
@@ -92,14 +111,15 @@ impl BookBuilder {
     fn copy_across_theme(&self) -> Result<()> {
         debug!("[*] Copying theme");
 
-        let themedir = self.config.html_config()
+        let themedir = self.config
+            .html_config()
             .and_then(|html| html.theme)
             .unwrap_or_else(|| self.config.book.src.join("theme"));
         let themedir = self.root.join(themedir);
 
         if !themedir.exists() {
-            debug!("[*]: {:?} does not exist, creating the directory",
-            themedir);         fs::create_dir(&themedir)?;
+            debug!("[*]: {:?} does not exist, creating the directory", themedir);
+            fs::create_dir(&themedir)?;
         }
 
         let mut index = File::create(themedir.join("index.hbs"))?;

src/book/mod.rs

@@ -1,3 +1,42 @@
+//! The internal representation of a book and infrastructure for loading it from
+//! disk and building it.
+//!
+//! # Examples
+//!
+//! If creating a new book from scratch, you'll want to get a `BookBuilder` via
+//! the `MDBook::init()` method.
+//!
+//! ```rust,no_run
+//! use mdbook::MDBook;
+//! use mdbook::config::Config;
+//!
+//! let root_dir = "/path/to/book/root";
+//!
+//! let mut cfg = Config::default();
+//! cfg.book.title = Some("My Book".to_string());
+//! cfg.book.authors.push("Michael-F-Bryan".to_string());
+//!
+//! MDBook::init(root_dir)
+//!     .create_gitignore(true)
+//!     .with_config(cfg)
+//!     .build()
+//!     .expect("Book generation failed");
+//! ```
+//!
+//! You can also load an existing book and build it.
+//!
+//! ```rust,no_run
+//! use mdbook::MDBook;
+//!
+//! let root_dir = "/path/to/book/root";
+//!
+//! let mut md = MDBook::load(root_dir)
+//!     .expect("Unable to load the book");
+//! md.build().expect("Building failed");
+//! ```
+
+#![deny(missing_docs)]
+
 mod summary;
 mod book;
 mod init;
@@ -18,13 +57,17 @@ use errors::*;
 
 use config::Config;
 
+/// The object used to manage and build a book.
 pub struct MDBook {
+    /// The book's root directory.
     pub root: PathBuf,
+    /// The configuration used to tweak now a book is built.
     pub config: Config,
 
     book: Book,
     renderer: Box<Renderer>,
 
+    /// The URL used for live reloading when serving up the book.
     pub livereload: Option<String>,
 }
 
@@ -123,6 +166,8 @@ impl MDBook {
         self.renderer.render(self)
     }
 
+    // FIXME: This doesn't belong as part of `MDBook`. It is only used by the HTML renderer
+    #[doc(hidden)]
     pub fn write_file<P: AsRef<Path>>(&self, filename: P, content: &[u8]) -> Result<()> {
         let path = self.get_destination().join(filename);
 
@@ -139,6 +184,7 @@ impl MDBook {
         self
     }
 
+    /// Run `rustdoc` tests on the book, linking against the provided libraries.
     pub fn test(&mut self, library_paths: Vec<&str>) -> Result<()> {
         let library_args: Vec<&str> = (0..library_paths.len())
             .map(|_| "-L")
@@ -151,7 +197,7 @@ impl MDBook {
         for item in self.iter() {
             if let BookItem::Chapter(ref ch) = *item {
                 if !ch.path.as_os_str().is_empty() {
-                    let path = self.get_source().join(&ch.path);
+                    let path = self.source_dir().join(&ch.path);
                     let base = path.parent()
                         .ok_or_else(|| String::from("Invalid bookitem path!"))?;
                     let content = utils::fs::file_to_string(&path)?;
@@ -182,14 +228,19 @@ impl MDBook {
         Ok(())
     }
 
+    // FIXME: This doesn't belong under `MDBook`, it should really be passed to the renderer directly.
+    #[doc(hidden)]
     pub fn get_destination(&self) -> PathBuf {
         self.root.join(&self.config.build.build_dir)
     }
 
-    pub fn get_source(&self) -> PathBuf {
+    /// Get the directory containing this book's source files.
+    pub fn source_dir(&self) -> PathBuf {
         self.root.join(&self.config.book.src)
     }
 
+    // FIXME: This belongs as part of the `HtmlConfig`.
+    #[doc(hidden)]
     pub fn theme_dir(&self) -> PathBuf {
         match self.config.html_config().and_then(|h| h.theme) {
             Some(d) => self.root.join(d),

src/renderer/html_handlebars/hbs_renderer.rs

@@ -318,7 +318,7 @@ impl Renderer for HtmlHandlebars {
         self.copy_additional_css_and_js(book)?;
 
         // Copy all remaining files
-        let src = book.get_source();
+        let src = book.source_dir();
         utils::fs::copy_files_except_ext(&src, &destination, true, &["md"])?;
 
         Ok(())