First big step for the html renderer, it reads an handlebars template and creates the files from SUMMARY.md respecting the source folder structure

Cargo.toml

@@ -5,3 +5,5 @@ authors = ["Mathieu David <mathieudavid@mathieudavid.org>"]
 
 [dependencies]
 getopts = "*"
+handlebars = "*"
+rustc-serialize = "*"

src/book/bookconfig.rs

@@ -1,6 +1,9 @@
-use std::path::PathBuf;
+use std::path::{Path, PathBuf};
 
+#[derive(Debug, Clone)]
 pub struct BookConfig {
+    title: String,
+    author: String,
     dest: PathBuf,
     src: PathBuf,
     indent_spaces: i32,
@@ -11,6 +14,8 @@ pub struct BookConfig {
 impl BookConfig {
     pub fn new() -> Self {
         BookConfig {
+            title: String::new(),
+            author: String::new(),
             dest: PathBuf::from("book"),
             src: PathBuf::from("src"),
             indent_spaces: 4,
@@ -18,21 +23,31 @@ impl BookConfig {
         }
     }
 
-    pub fn dest(&self) -> PathBuf {
-        self.dest.clone()
+    pub fn dest(&self) -> &Path {
+        &self.dest
     }
 
-    pub fn set_dest(mut self, dest: PathBuf) -> Self {
-        self.dest = dest;
+    pub fn set_dest(&mut self, dest: &Path) -> &mut Self {
+        self.dest = dest.to_owned();
         self
     }
 
-    pub fn src(&self) -> PathBuf {
-        self.src.clone()
+    pub fn src(&self) -> &Path {
+        &self.src
     }
 
-    pub fn set_src(mut self, src: PathBuf) -> Self {
-        self.src = src;
+    pub fn set_src(&mut self, src: &Path) -> &mut Self {
+        self.src = src.to_owned();
+        self
+    }
+
+    pub fn set_title(&mut self, title: &str) -> &mut Self {
+        self.title = title.to_owned();
+        self
+    }
+
+    pub fn set_author(&mut self, author: &str) -> &mut Self {
+        self.author = author.to_owned();
         self
     }
 }

src/book/bookitem.rs

@@ -1,5 +1,10 @@
-use std::path::PathBuf;
+extern crate rustc_serialize;
 
+use self::rustc_serialize::json::{Json, ToJson};
+use std::path::PathBuf;
+use std::collections::BTreeMap;
+
+#[derive(Debug, Clone)]
 pub struct BookItem {
     pub name: String,
     pub path: PathBuf,
@@ -7,12 +12,14 @@ pub struct BookItem {
     spacer: bool,
 }
 
-pub enum ItemType {
-    Pre,
-    Chapter,
-    Post
+#[derive(Debug, Clone)]
+pub struct BookItems<'a> {
+    pub items: &'a [BookItem],
+    pub current_index: usize,
+    pub stack: Vec<(&'a [BookItem], usize)>,
 }
 
+
 impl BookItem {
 
     pub fn new(name: String, path: PathBuf) -> Self {
@@ -33,9 +40,53 @@ impl BookItem {
             spacer: true,
         }
     }
-
-    fn push(&mut self, item: BookItem) {
-        self.sub_items.push(item);
 }
 
+
+impl ToJson for BookItem {
+    fn to_json(&self) -> Json {
+        let mut m: BTreeMap<String, Json> = BTreeMap::new();
+        m.insert("name".to_string(), self.name.to_json());
+        m.insert("path".to_string(),self.path.to_str()
+            .expect("Json conversion failed for path").to_json()
+        );
+        m.to_json()
+    }
+}
+
+
+
+// Shamelessly copied from Rustbook
+// (https://github.com/rust-lang/rust/blob/master/src/rustbook/book.rs)
+impl<'a> Iterator for BookItems<'a> {
+    type Item = (String, &'a BookItem);
+
+    fn next(&mut self) -> Option<(String, &'a BookItem)> {
+        loop {
+            if self.current_index >= self.items.len() {
+                match self.stack.pop() {
+                    None => return None,
+                    Some((parent_items, parent_idx)) => {
+                        self.items = parent_items;
+                        self.current_index = parent_idx + 1;
+                    }
+                }
+            } else {
+                let cur = self.items.get(self.current_index).unwrap();
+
+                let mut section = "".to_string();
+                for &(_, idx) in &self.stack {
+                    section.push_str(&(idx + 1).to_string()[..]);
+                    section.push('.');
+                }
+                section.push_str(&(self.current_index + 1).to_string()[..]);
+                section.push('.');
+
+                self.stack.push((self.items, self.current_index));
+                self.items = &cur.sub_items[..];
+                self.current_index = 0;
+                return Some((section, cur))
+            }
+        }
+    }
 }

src/book/mdbook.rs

@@ -1,21 +1,23 @@
-use std::path::PathBuf;
+use std::path::Path;
 use std::fs::{self, File, metadata};
-use std::io::{Write, Result};
+use std::io::{self, Write};
+use std::error::Error;
 
-use book::bookconfig::BookConfig;
-use book::bookitem::BookItem;
+use {BookConfig, BookItem};
+use book::BookItems;
 use parse;
+use renderer::Renderer;
+use renderer::HtmlHandlebars;
 
 pub struct MDBook {
-    title: String,
-    author: String,
     config: BookConfig,
-    pub content: Vec<BookItem>
+    pub content: Vec<BookItem>,
+    renderer: Box<Renderer>,
 }
 
 impl MDBook {
 
-    pub fn new(path: &PathBuf) -> Self {
+    pub fn new(path: &Path) -> MDBook {
 
         // Hacky way to check if the path exists... Until PathExt moves to stable
         match metadata(path) {
@@ -28,16 +30,24 @@ impl MDBook {
         }
 
         MDBook {
-            title: String::from(""),
-            author: String::from(""),
             content: vec![],
             config: BookConfig::new()
-                        .set_src(path.join("src"))
-                        .set_dest(path.join("book")),
+                        .set_src(&path.join("src"))
+                        .set_dest(&path.join("book"))
+                        .to_owned(),
+            renderer: Box::new(HtmlHandlebars::new()),
         }
     }
 
-    pub fn init(&self) -> Result<()> {
+    pub fn iter(&self) -> BookItems {
+        BookItems {
+            items: &self.content[..],
+            current_index: 0,
+            stack: Vec::new(),
+        }
+    }
+
+    pub fn init(&self) -> Result<(), Box<Error>> {
 
         let dest = self.config.dest();
         let src = self.config.src();
@@ -87,38 +97,43 @@ impl MDBook {
         return Ok(());
     }
 
-    pub fn build(&mut self) -> Result<()> {
+    pub fn build(&mut self) -> Result<(), Box<Error>> {
 
         try!(self.parse_summary());
 
+        try!(self.renderer.render(
+            self.iter(),
+            &self.config,
+        ));
+
         Ok(())
     }
 
 
     // Builder functions
-    pub fn set_dest(mut self, dest: PathBuf) -> Self {
-        self.config = self.config.set_dest(dest);
+    pub fn set_dest(mut self, dest: &Path) -> Self {
+        self.config.set_dest(dest);
         self
     }
 
-    pub fn set_src(mut self, src: PathBuf) -> Self {
-        self.config = self.config.set_src(src);
+    pub fn set_src(mut self, src: &Path) -> Self {
+        self.config.set_src(src);
         self
     }
 
-    pub fn set_title(mut self, title: String) -> Self {
-        self.title = title;
+    pub fn set_title(mut self, title: &str) -> Self {
+        self.config.set_title(title);
         self
     }
 
-    pub fn set_author(mut self, author: String) -> Self {
-        self.author = author;
+    pub fn set_author(mut self, author: &str) -> Self {
+        self.config.set_author(author);
         self
     }
 
 
     // Construct book
-    fn parse_summary(&mut self) -> Result<()> {
+    fn parse_summary(&mut self) -> Result<(), Box<Error>> {
 
         // When append becomes stale, use self.content.append() ...
         let book_items = try!(parse::construct_bookitems(&self.config.src().join("SUMMARY.md")));
@@ -127,11 +142,6 @@ impl MDBook {
             self.content.push(item)
         }
 
-        // Debug
-        for item in &self.content {
-            println!("name: \"{}\" path: {:?}", item.name, item.path);
-        }
-
         Ok(())
     }
 

src/book/mod.rs

@@ -2,6 +2,6 @@ pub mod mdbook;
 pub mod bookitem;
 mod bookconfig;
 
-
-use self::bookconfig::BookConfig;
-use self::bookitem::BookItem;
+pub use self::bookitem::{BookItem, BookItems};
+pub use self::bookconfig::BookConfig;
+pub use self::mdbook::MDBook;

src/lib.rs

@@ -1,5 +1,8 @@
 mod book;
 mod parse;
+pub mod renderer;
+pub mod theme;
 
-pub use book::mdbook::MDBook;
-use book::bookitem::BookItem;
+pub use book::MDBook;
+pub use book::BookItem;
+pub use book::BookConfig;

src/parse/summary.rs

@@ -82,7 +82,7 @@ fn parse_line(l: &str) -> Option<BookItem> {
     let mut name;
     let mut path;
     // Remove leading and trailing spaces or tabs
-    let mut line = l.trim_matches(|c: char| { c == ' ' || c == '\t' });
+    let line = l.trim_matches(|c: char| { c == ' ' || c == '\t' });
 
     if let Some(c) = line.chars().nth(0) {
         match c {

src/renderer/html_handlebars.rs

@@ -0,0 +1,121 @@
+extern crate handlebars;
+extern crate rustc_serialize;
+
+use renderer::Renderer;
+use book::{BookItems, BookItem, BookConfig};
+use theme;
+
+use std::path::{Path, PathBuf, Component};
+use std::fs::{self, File, metadata};
+use std::error::Error;
+use std::io::{self, Read, Write};
+use self::handlebars::Handlebars;
+use self::rustc_serialize::json::{Json, ToJson};
+use std::collections::BTreeMap;
+
+pub struct HtmlHandlebars;
+
+impl Renderer for HtmlHandlebars {
+    fn render(&self, book: BookItems, config: &BookConfig) -> Result<(), Box<Error>> {
+
+        let mut handlebars = Handlebars::new();
+
+        // Load template
+        let t = theme::get_index_hbs();
+
+        // Register template
+        try!(handlebars.register_template_string("index", t.to_owned()));
+
+        let mut data = BTreeMap::new();
+        let mut chapters: Vec<(String, BookItem)> = vec![];
+
+        // Hacky way to prevent move error... Not optimal
+        for (section, item) in book.clone() {
+            chapters.push((section, item.clone()));
+        }
+        data.insert("chapters".to_string(), chapters.to_json());
+
+        for (_, item) in book {
+
+            if item.path != PathBuf::new() {
+
+                let rendered = try!(handlebars.render("index", &data));
+
+                let mut file = try!(create_file(config.dest(), &item.path));
+                try!(file.write_all(&rendered.into_bytes()));
+            }
+        }
+
+        Ok(())
+    }
+}
+
+impl HtmlHandlebars {
+    pub fn new() -> Self {
+        HtmlHandlebars
+    }
+
+    fn _load_template(&self, path: &Path) -> Result<String, Box<Error>> {
+        let mut file = try!(File::open(path));
+        let mut s = String::new();
+        try!(file.read_to_string(&mut s));
+        Ok(s)
+    }
+}
+
+fn create_file(working_directory: &Path, path: &Path) -> Result<File, Box<Error>> {
+
+    println!("create_file:\n\t{:?}\n\t{:?}", working_directory, path);
+
+    // Extract filename
+    let mut file_name;
+    if let Some(name) = path.file_stem() {
+        file_name = String::from(name.to_str().unwrap());
+    }
+    else { return Err(Box::new(io::Error::new(io::ErrorKind::Other, "No filename"))) }
+
+    file_name.push_str(".html");
+
+    // Delete filename from path
+    let mut path = path.to_path_buf();
+    path.pop();
+
+    // Create directories if they do not exist
+    let mut constructed_path = PathBuf::from(working_directory);
+
+    for component in path.components() {
+
+        let mut dir;
+        match component {
+            Component::Normal(_) => { dir = PathBuf::from(component.as_os_str()); },
+            _ => continue,
+        }
+
+        constructed_path.push(&dir);
+
+        println!("constructed path= {:?}\ndir= {:?}", constructed_path, dir.as_os_str());
+
+        // Check if path exists
+        match metadata(&constructed_path) {
+            // Any way to combine the Err and first Ok branch ??
+            Err(_) => {
+                try!(fs::create_dir(&constructed_path))
+            },
+            Ok(f) => {
+                if !f.is_dir() {
+                    try!(fs::create_dir(&constructed_path))
+                } else {
+                    println!("Exists ??");
+                    continue
+                }
+            },
+        }
+
+    }
+
+    let file = try!(File::create(
+        constructed_path.join(file_name)
+    ));
+
+    Ok(file)
+}

src/renderer/mod.rs

@@ -0,0 +1,5 @@
+pub use self::renderer::Renderer;
+pub use self::html_handlebars::HtmlHandlebars;
+
+pub mod renderer;
+pub mod html_handlebars;

src/renderer/renderer.rs

@@ -0,0 +1,8 @@
+use book::{BookItem, BookItems};
+use book::BookConfig;
+
+use std::error::Error;
+
+pub trait Renderer {
+    fn render(&self, book: BookItems, config: &BookConfig) ->  Result<(), Box<Error>>;
+}

src/theme/index.hbs

@@ -0,0 +1,16 @@
+<!DOCTYPE HTML>
+<html lang="{{ language }}">
+    <head>
+        <meta charset="UTF-8">
+        <title>{{ title }}</title>
+        <meta content="text/html; charset=utf-8" http-equiv="Content-Type">
+        <meta name="description" content="{% block description %}{% endblock %}">
+        <meta name="viewport" content="width=device-width, initial-scale=1">
+
+        <link rel="stylesheet" href="book.css" media="screen" title="no title" charset="utf-8">
+    </head>
+    <body>
+        
+        <script src="book.js"></script>
+    </body>
+</html>

src/theme/mod.rs

@@ -0,0 +1,5 @@
+
+pub fn get_index_hbs() -> &'static str {
+    let index = include_str!("index.hbs");
+    index
+}