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use std::borrow::Cow;
use std::env;
use std::error::Error;
use std::fs::File;
use std::io::Write;
use std::path::{Path, PathBuf};
use std::process::Command;
use std::{fs, process};
use clap::{App, Arg, SubCommand};
use gazetta_core::model::Source;
use gazetta_core::render::Gazetta;
use slug::slugify;
use chrono::offset::Local as Date;
trait RenderPaths {
fn render_paths(&self, source_path: &Path, dest_path: &Path) -> Result<(), Box<dyn Error>>;
}
impl<G: Gazetta> RenderPaths for G {
fn render_paths(&self, source_path: &Path, dest_path: &Path) -> Result<(), Box<dyn Error>> {
let source = Source::new(&source_path)?;
self.render(&source, &dest_path)?;
Ok(())
}
}
pub fn run<G: Gazetta>(gazetta: G) -> ! {
process::exit(_run(&gazetta).unwrap_or_else(|e| {
eprintln!("{}", e);
1
}))
}
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: &dyn RenderPaths) -> Result<i32, Box<dyn Error>> {
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()))
.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 Some(Cow::Owned(path));
}
path.push("..");
}
None
})
.ok_or("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") {
fs::remove_dir_all(dest_path).map_err(|e| {
format!("Failed to remove '{}': {}", dest_path.display(), e)
})?;
} else {
return Err(format!("Target '{}' exists.", dest_path.display()).into());
}
}
render_paths.render_paths(&source_path, dest_path)?;
Ok(0)
}
("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 path.exists() {
return Err(format!("Directory '{}' exists.", path.display()).into());
}
fs::create_dir(&path)
.map_err(|e| format!("Failed to create directory '{}': {}", path.display(), e))?;
path.push("index.md");
let mut file = File::create(&path)?;
writeln!(file, "---")?;
writeln!(file, "title: {}", &title)?;
writeln!(file, "date: {}", Date::today().format("%Y-%m-%d"))?;
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_else(|| "vim".as_ref()),
)
.arg("index.md")
.current_dir(path)
.status()
{
Ok(status) => match status.code() {
Some(code) => Ok(code),
None => Err("Editor was killed.".into()),
},
Err(e) => Err(format!("Failed to spawn editor: {}", e).into()),
}
} else {
Ok(0)
}
}
_ => Err(matches.usage().into()),
}
}