feat(core): Implement basic adding and listing of projects with cli

This commit is contained in:
Patrick Auernig 2024-11-22 22:43:35 +01:00
parent 58186ac3b1
commit 26e31c280b
4 changed files with 424 additions and 2 deletions

237
Cargo.lock generated
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@ -6,3 +6,8 @@ publish = false
[dependencies]
anyhow = "1.0"
[dependencies.clap]
version = "4.5"
features = ["derive"]

55
src/dirs.rs Normal file
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@ -0,0 +1,55 @@
use std::fs;
use std::path::PathBuf;
use std::sync::OnceLock;
use anyhow::Result;
const APP_NAME: &str = env!("CARGO_PKG_NAME");
const APP_ORG: &str = "valeth";
static CONFIG: OnceLock<PathBuf> = OnceLock::new();
static DATA: OnceLock<PathBuf> = OnceLock::new();
static CACHE: OnceLock<PathBuf> = OnceLock::new();
pub fn config_path() -> &'static PathBuf {
CONFIG.get_or_init(|| init("XDG_CONFIG_HOME", ".config").unwrap())
}
pub fn data_path() -> &'static PathBuf {
DATA.get_or_init(|| init("XDG_DATA_HOME", ".local/share").unwrap())
}
pub fn cache_path() -> &'static PathBuf {
CACHE.get_or_init(|| init("XDG_CACHE_HOME", ".cache").unwrap())
}
fn init(xdg_var: &str, fallback_home_path: &str) -> Result<PathBuf> {
let path = xdg_path_with_fallback(xdg_var, fallback_home_path)?;
if !path.exists() {
fs::create_dir_all(&path)?;
}
Ok(path)
}
fn xdg_path_with_fallback(xdg_var: &str, fallback_home_path: &str) -> Result<PathBuf> {
use std::env;
let user_home = env::var("HOME").expect("HOME variable is not set");
let user_home = PathBuf::from(user_home);
let apply_fallback = |e| match e {
env::VarError::NotPresent => Ok(user_home.join(fallback_home_path)),
_ => Err(e.into()),
};
env::var(xdg_var)
.map(PathBuf::from)
.or_else(apply_fallback)
.map(|path| path.join(APP_ORG).join(APP_NAME))
}

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@ -1,3 +1,128 @@
fn main() {
println!("hello");
mod dirs;
use std::ffi::OsStr;
use std::fs;
use std::io::{Read, Write};
use std::path::PathBuf;
use anyhow::{bail, ensure, Result};
use clap::{Parser, Subcommand};
#[derive(Debug, Parser)]
pub struct Args {
#[command(subcommand)]
cmd: Command,
}
#[derive(Debug, Subcommand)]
enum Command {
/// Add a project
Add { path: PathBuf },
/// List existing projects
List,
}
#[derive(Debug, Default)]
struct Projects {
list: Vec<PathBuf>,
}
fn main() -> Result<()> {
let args = Args::parse();
let mut projects = read_projects_file()?;
let result = match &args.cmd {
Command::Add { path } => add_project(&mut projects, path),
Command::List => list_projects(&projects),
};
if let Err(err) = result {
eprintln!("{err}");
std::process::exit(1);
}
Ok(())
}
fn add_project<P>(projects: &mut Projects, path: P) -> Result<()>
where
P: Into<PathBuf>,
{
let path = path.into();
ensure!(path.is_dir(), "Project path does not exists");
ensure!(
!projects.list.contains(&path.to_path_buf()),
"Project path already registered"
);
projects.list.push(path);
write_projects_file(projects)?;
Ok(())
}
fn list_projects(projects: &Projects) -> Result<()> {
for project in &projects.list {
println!("{project:?}")
}
Ok(())
}
fn write_projects_file(projects: &Projects) -> Result<()> {
let projects_file = dirs::data_path().join("projects");
let mut file = fs::OpenOptions::new()
.write(true)
.create(true)
.truncate(true)
.open(projects_file)?;
for project_path in &projects.list {
let os_str = project_path.as_os_str();
let bytes = os_str.as_encoded_bytes();
file.write_all(bytes)?;
file.write_all(b"\n")?;
}
Ok(())
}
fn read_projects_file() -> Result<Projects> {
let projects_file = dirs::data_path().join("projects");
if !projects_file.exists() {
return Ok(Projects::default());
}
let mut file = std::fs::File::open(projects_file)?;
let mut buf = Vec::new();
file.read_to_end(&mut buf)?;
let list = buf
.split(|&x| x == b'\n')
.filter_map(|chunk| {
// FIXME: not a good idea to store the OsStr
let os_str = unsafe { OsStr::from_encoded_bytes_unchecked(chunk) };
if os_str.is_empty() {
None
} else {
Some(PathBuf::from(os_str))
}
})
.collect();
Ok(Projects { list })
}