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extern crate gazetta_core;
extern crate chrono;
extern crate clap;
extern crate slug;
use std::{fs, process};
use std::process::Command;
use std::io::Write;
use std::env;
use std::path::{Path, PathBuf};
use std::fs::File;
use std::borrow::Cow;
use clap::{Arg, App, SubCommand};
use gazetta_core::render::Gazetta;
use gazetta_core::model::Source;
use slug::slugify;
use chrono::offset::Local as Date;
macro_rules! try_exit {
($e:expr) => {
match $e {
Ok(v) => v,
Err(e) => bail!("{}", e),
}
}
}
macro_rules! bail {
($($toks:tt)*) => {{
eprintln!($($toks)*);
process::exit(1)
}}
}
trait RenderPaths {
fn render_paths(&self, source_path: &Path, dest_path: &Path);
}
impl<G: Gazetta> RenderPaths for G {
fn render_paths(&self, source_path: &Path, dest_path: &Path) {
let source = try_exit!(Source::new(&source_path));
try_exit!(self.render(&source, &dest_path));
}
}
pub fn run<G: Gazetta>(gazetta: G) -> ! {
_run(&gazetta)
}
pub fn gen_completions<P: AsRef<Path>>(name: &str, directory: P) {
let directory = directory.as_ref();
let mut app = build_argparser(name);
app.gen_completions(name, clap::Shell::Bash, directory);
}
fn build_argparser(name: &str) -> App {
App::new(name)
.version(env!("CARGO_PKG_VERSION"))
.arg(Arg::with_name("SOURCE")
.short("s")
.long("source")
.takes_value(true)
.help("Specify the source directory (defaults to the current directory)"))
.subcommand(SubCommand::with_name("render")
.about("Render the website")
.arg(Arg::with_name("FORCE")
.short("f")
.long("force")
.help("Overwrite any existing DEST."))
.arg(Arg::with_name("DEST")
.required(true)
.index(1)
.help("Destination directory")))
.subcommand(SubCommand::with_name("new")
.about("Create a new page")
.arg(Arg::with_name("EDIT")
.short("e")
.long("edit")
.help("Edit new page in your $EDITOR"))
.arg(Arg::with_name("WHERE")
.required(true)
.index(1)
.help("Directory in which to create the page"))
.arg(Arg::with_name("TITLE")
.required(true)
.index(2)
.help("The page title")))
}
fn _run(render_paths: &RenderPaths) -> ! {
let name = env::args().next().unwrap();
let matches = build_argparser(&name).get_matches();
let source_path: Cow<Path> =
matches.value_of("SOURCE").map(|v| Cow::Borrowed(v.as_ref())).unwrap_or_else(|| {
let mut path = PathBuf::new();
path.push(".");
while path.exists() {
path.push("gazetta.yaml");
let is_root = path.exists();
path.pop();
if is_root {
return Cow::Owned(path);
}
path.push("..");
}
bail!("Could not find a gazetta config in this directory or any parent directories.");
});
match matches.subcommand() {
("render", Some(matches)) => {
let dest_path: &Path = matches.value_of("DEST").unwrap().as_ref();
if fs::metadata(&dest_path).is_ok() {
if matches.is_present("FORCE") {
match fs::remove_dir_all(dest_path) {
Ok(_) => (),
Err(e) => bail!("Failed to remove '{}': {}", dest_path.display(), e),
}
} else {
bail!("Target '{}' exists.", dest_path.display());
}
}
render_paths.render_paths(&source_path, dest_path);
}
("new", Some(matches)) => {
let mut path: PathBuf = matches.value_of("WHERE").unwrap().into();
let title = matches.value_of("TITLE").unwrap();
path.push(slugify(&title));
if fs::metadata(&path).is_ok() {
bail!("Directory '{}' exists.", path.display());
}
if let Err(e) = fs::create_dir(&path) {
bail!("Failed to create directory '{}': {}", path.display(), e);
}
path.push("index.md");
let mut file = try_exit!(File::create(&path));
try_exit!(writeln!(file, "---"));
try_exit!(writeln!(file, "title: {}", &title));
try_exit!(writeln!(file, "date: {}", Date::today().format("%Y-%m-%d")));
try_exit!(writeln!(file, "---"));
println!("Created page: {}", path.display());
if matches.is_present("EDIT") {
path.pop();
match Command::new(env::var_os("EDITOR")
.as_ref()
.map(|p| &**p)
.unwrap_or("vim".as_ref()))
.arg("index.md")
.current_dir(path)
.status() {
Ok(status) => {
match status.code() {
Some(code) => process::exit(code),
None => bail!("Editor was killed."),
}
}
Err(e) => bail!("Failed to spawn editor: {}", e),
}
}
}
_ => {
bail!("{}", matches.usage());
}
}
process::exit(0)
}