[Clean-up] Reorganize structure in handlebars renderer
This commit is contained in:
Mathieu David
parent
16318273f3
commit
bca6a7aa13
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@ -0,0 +1,222 @@
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extern crate handlebars;
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extern crate rustc_serialize;
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extern crate pulldown_cmark;
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use renderer::html_handlebars::helpers;
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use renderer::Renderer;
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use book::{BookItems, BookConfig};
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use {theme, utils};
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use std::path::{Path, PathBuf, Component};
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use std::fs::{self, File, metadata};
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use std::error::Error;
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use std::io::{self, Read, Write};
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use std::collections::BTreeMap;
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use self::handlebars::{Handlebars, JsonRender};
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use self::rustc_serialize::json::{Json, ToJson};
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use self::pulldown_cmark::{Parser, html};
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pub struct HtmlHandlebars;
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impl Renderer for HtmlHandlebars {
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fn render(&self, book: BookItems, config: &BookConfig) -> Result<(), Box<Error>> {
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debug!("[fn]: render");
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let mut handlebars = Handlebars::new();
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// Load template
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let t = theme::get_index_hbs();
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// Register template
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debug!("[*]: Register handlebars template");
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try!(handlebars.register_template_string("index", t.to_owned()));
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// Register helpers
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debug!("[*]: Register handlebars helpers");
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handlebars.register_helper("toc", Box::new(helpers::toc::RenderToc));
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handlebars.register_helper("previous", Box::new(helpers::navigation::previous));
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handlebars.register_helper("next", Box::new(helpers::navigation::next));
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let mut data = try!(make_data(book.clone(), config));
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// Check if dest directory exists
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debug!("[*]: Check if destination directory exists");
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match utils::path::create_path(config.dest()) {
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Err(_) => return Err(Box::new(io::Error::new(io::ErrorKind::Other, "Unexcpected error when constructing destination path"))),
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_ => {},
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};
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// Render a file for every entry in the book
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let mut index = true;
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for (_, item) in book {
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if item.path != PathBuf::new() {
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let path = config.src().join(&item.path);
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debug!("[*]: Opening file: {:?}", path);
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let mut f = try!(File::open(&path));
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let mut content: String = String::new();
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debug!("[*]: Reading file");
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try!(f.read_to_string(&mut content));
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// Render markdown using the pulldown-cmark crate
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content = render_html(&content);
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// Remove content from previous file and render content for this one
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data.remove("path");
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data.insert("path".to_string(), item.path.to_str().unwrap().to_json());
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// Remove content from previous file and render content for this one
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data.remove("content");
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data.insert("content".to_string(), content.to_json());
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// Remove path to root from previous file and render content for this one
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data.remove("path_to_root");
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data.insert("path_to_root".to_string(), utils::path::path_to_root(&item.path).to_json());
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// Rendere the handlebars template with the data
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debug!("[*]: Render template");
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let rendered = try!(handlebars.render("index", &data));
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debug!("[*] Write to file");
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// Write to file
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let mut file = try!(create_file(config.dest(), &item.path));
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try!(file.write_all(&rendered.into_bytes()));
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// Create an index.html from the first element in SUMMARY.md
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if index {
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debug!("[*] index.html");
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try!(fs::copy(
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config.dest().join(&item.path.with_extension("html")),
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config.dest().join("index.html")
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));
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println!(
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"[*] Creating index.html from {:?} ✓",
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config.dest().join(&item.path.with_extension("html"))
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);
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index = false;
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}
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}
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}
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// Copy static files (js, css, images, ...)
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debug!("[*] Copy static files");
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// JavaScript
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let mut js_file = try!(File::create(config.dest().join("book.js")));
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try!(js_file.write_all(theme::get_js()));
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// Css
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let mut css_file = try!(File::create(config.dest().join("book.css")));
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try!(css_file.write_all(theme::get_css()));
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Ok(())
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}
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}
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impl HtmlHandlebars {
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pub fn new() -> Self {
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HtmlHandlebars
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}
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/*fn _load_template(&self, path: &Path) -> Result<String, Box<Error>> {
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let mut file = try!(File::open(path));
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let mut s = String::new();
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try!(file.read_to_string(&mut s));
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Ok(s)
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}*/
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}
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fn create_file(working_directory: &Path, path: &Path) -> Result<File, Box<Error>> {
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debug!("[fn]: create_file");
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debug!("[*]: extract filename");
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// Extract filename
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let mut file_name;
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if let Some(name) = path.file_stem() {
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file_name = String::from(name.to_str().unwrap());
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}
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else { return Err(Box::new(io::Error::new(io::ErrorKind::Other, "No filename"))) }
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file_name.push_str(".html");
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// Delete filename from path
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let mut path = path.to_path_buf();
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path.pop();
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// Create directories if they do not exist
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let mut constructed_path = PathBuf::from(working_directory);
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for component in path.components() {
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let mut dir;
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match component {
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Component::Normal(_) => { dir = PathBuf::from(component.as_os_str()); },
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_ => continue,
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}
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constructed_path.push(&dir);
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// Check if path exists
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match metadata(&constructed_path) {
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// Any way to combine the Err and first Ok branch ??
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Err(_) => {
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debug!("[*]: Create {:?}", constructed_path);
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try!(fs::create_dir(&constructed_path))
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},
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Ok(f) => {
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if !f.is_dir() {
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debug!("[*]: Create {:?}", constructed_path);
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try!(fs::create_dir(&constructed_path))
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} else {
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debug!("[*]: Directory exists: {:?}", constructed_path);
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continue
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}
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},
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}
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}
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debug!("[*]: Create {:?}", constructed_path.join(&file_name));
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let file = try!(File::create(
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constructed_path.join(&file_name)
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));
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println!("[*] Create file: {:?} ✓", constructed_path.join(&file_name));
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Ok(file)
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}
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fn make_data(book: BookItems, config: &BookConfig) -> Result<BTreeMap<String,Json>, Box<Error>> {
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debug!("[fn]: make_data");
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let mut data = BTreeMap::new();
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data.insert("language".to_string(), "en".to_json());
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data.insert("title".to_string(), config.title.to_json());
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let mut chapters = vec![];
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for (section, item) in book {
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let mut chapter = BTreeMap::new();
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chapter.insert("section".to_string(), section.to_json());
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chapter.insert("name".to_string(), item.name.to_json());
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chapter.insert("path".to_string(), item.path.to_str().unwrap().to_json());
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chapters.push(chapter);
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}
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data.insert("chapters".to_string(), chapters.to_json());
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debug!("[*]: JSON constructed");
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Ok(data)
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}
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fn render_html(text: &str) -> String {
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let mut s = String::with_capacity(text.len() * 3 / 2);
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let p = Parser::new(&text);
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html::push_html(&mut s, p);
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s
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}
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@ -0,0 +1,2 @@
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pub mod navigation;
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pub mod toc;
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@ -1,225 +1,4 @@
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extern crate handlebars;
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extern crate rustc_serialize;
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extern crate pulldown_cmark;
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pub use self::hbs_renderer::HtmlHandlebars;
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mod hbs_toc_helper;
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mod hbs_navigation_helper;
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use self::hbs_toc_helper::RenderToc;
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use renderer::Renderer;
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use book::{BookItems, BookConfig};
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use {theme, utils};
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use std::path::{Path, PathBuf, Component};
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use std::fs::{self, File, metadata};
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use std::error::Error;
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use std::io::{self, Read, Write};
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use std::collections::BTreeMap;
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use self::handlebars::{Handlebars, JsonRender};
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use self::rustc_serialize::json::{Json, ToJson};
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use self::pulldown_cmark::{Parser, html};
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pub struct HtmlHandlebars;
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impl Renderer for HtmlHandlebars {
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fn render(&self, book: BookItems, config: &BookConfig) -> Result<(), Box<Error>> {
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debug!("[fn]: render");
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let mut handlebars = Handlebars::new();
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// Load template
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let t = theme::get_index_hbs();
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// Register template
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debug!("[*]: Register handlebars template");
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try!(handlebars.register_template_string("index", t.to_owned()));
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// Register helpers
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debug!("[*]: Register handlebars helpers");
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handlebars.register_helper("toc", Box::new(RenderToc));
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handlebars.register_helper("previous", Box::new(hbs_navigation_helper::previous));
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handlebars.register_helper("next", Box::new(hbs_navigation_helper::next));
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let mut data = try!(make_data(book.clone(), config));
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// Check if dest directory exists
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debug!("[*]: Check if destination directory exists");
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match utils::path::create_path(config.dest()) {
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Err(_) => return Err(Box::new(io::Error::new(io::ErrorKind::Other, "Unexcpected error when constructing destination path"))),
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_ => {},
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};
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// Render a file for every entry in the book
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let mut index = true;
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for (_, item) in book {
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if item.path != PathBuf::new() {
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let path = config.src().join(&item.path);
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debug!("[*]: Opening file: {:?}", path);
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let mut f = try!(File::open(&path));
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let mut content: String = String::new();
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debug!("[*]: Reading file");
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try!(f.read_to_string(&mut content));
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// Render markdown using the pulldown-cmark crate
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content = render_html(&content);
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// Remove content from previous file and render content for this one
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data.remove("path");
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data.insert("path".to_string(), item.path.to_str().unwrap().to_json());
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// Remove content from previous file and render content for this one
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data.remove("content");
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data.insert("content".to_string(), content.to_json());
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// Remove path to root from previous file and render content for this one
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data.remove("path_to_root");
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data.insert("path_to_root".to_string(), utils::path::path_to_root(&item.path).to_json());
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// Rendere the handlebars template with the data
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debug!("[*]: Render template");
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let rendered = try!(handlebars.render("index", &data));
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debug!("[*] Write to file");
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// Write to file
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let mut file = try!(create_file(config.dest(), &item.path));
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try!(file.write_all(&rendered.into_bytes()));
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// Create an index.html from the first element in SUMMARY.md
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if index {
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debug!("[*] index.html");
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try!(fs::copy(
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config.dest().join(&item.path.with_extension("html")),
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config.dest().join("index.html")
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));
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println!(
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"[*] Creating index.html from {:?} ✓",
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config.dest().join(&item.path.with_extension("html"))
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);
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index = false;
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}
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}
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}
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// Copy static files (js, css, images, ...)
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debug!("[*] Copy static files");
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// JavaScript
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let mut js_file = try!(File::create(config.dest().join("book.js")));
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try!(js_file.write_all(theme::get_js()));
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// Css
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let mut css_file = try!(File::create(config.dest().join("book.css")));
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try!(css_file.write_all(theme::get_css()));
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Ok(())
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}
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}
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impl HtmlHandlebars {
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pub fn new() -> Self {
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HtmlHandlebars
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}
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/*fn _load_template(&self, path: &Path) -> Result<String, Box<Error>> {
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let mut file = try!(File::open(path));
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let mut s = String::new();
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try!(file.read_to_string(&mut s));
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Ok(s)
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}*/
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}
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fn create_file(working_directory: &Path, path: &Path) -> Result<File, Box<Error>> {
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debug!("[fn]: create_file");
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debug!("[*]: extract filename");
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// Extract filename
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let mut file_name;
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if let Some(name) = path.file_stem() {
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file_name = String::from(name.to_str().unwrap());
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}
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else { return Err(Box::new(io::Error::new(io::ErrorKind::Other, "No filename"))) }
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file_name.push_str(".html");
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// Delete filename from path
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let mut path = path.to_path_buf();
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path.pop();
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// Create directories if they do not exist
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let mut constructed_path = PathBuf::from(working_directory);
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for component in path.components() {
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let mut dir;
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match component {
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Component::Normal(_) => { dir = PathBuf::from(component.as_os_str()); },
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_ => continue,
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}
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constructed_path.push(&dir);
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// Check if path exists
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match metadata(&constructed_path) {
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// Any way to combine the Err and first Ok branch ??
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Err(_) => {
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debug!("[*]: Create {:?}", constructed_path);
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try!(fs::create_dir(&constructed_path))
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},
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Ok(f) => {
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if !f.is_dir() {
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debug!("[*]: Create {:?}", constructed_path);
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try!(fs::create_dir(&constructed_path))
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} else {
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debug!("[*]: Directory exists: {:?}", constructed_path);
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continue
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}
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},
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}
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}
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debug!("[*]: Create {:?}", constructed_path.join(&file_name));
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let file = try!(File::create(
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constructed_path.join(&file_name)
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));
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println!("[*] Create file: {:?} ✓", constructed_path.join(&file_name));
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Ok(file)
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}
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fn make_data(book: BookItems, config: &BookConfig) -> Result<BTreeMap<String,Json>, Box<Error>> {
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debug!("[fn]: make_data");
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let mut data = BTreeMap::new();
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data.insert("language".to_string(), "en".to_json());
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data.insert("title".to_string(), config.title.to_json());
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let mut chapters = vec![];
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for (section, item) in book {
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let mut chapter = BTreeMap::new();
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chapter.insert("section".to_string(), section.to_json());
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chapter.insert("name".to_string(), item.name.to_json());
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chapter.insert("path".to_string(), item.path.to_str().unwrap().to_json());
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chapters.push(chapter);
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}
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data.insert("chapters".to_string(), chapters.to_json());
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debug!("[*]: JSON constructed");
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Ok(data)
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}
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fn render_html(text: &str) -> String {
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let mut s = String::with_capacity(text.len() * 3 / 2);
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let p = Parser::new(&text);
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html::push_html(&mut s, p);
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s
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}
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mod hbs_renderer;
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mod helpers;
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