Merge pull request 'doc/readme' (#1) from doc/readme into main

Reviewed-on: https://gitea.ahur.ac/ahurac/rash/pulls/1
This commit is contained in:
Ahurac 2023-12-11 12:41:55 +01:00
commit 0f5d4a8e05
4 changed files with 52 additions and 13 deletions

View file

@ -2,5 +2,21 @@
[![Please don't upload to GitHub](https://nogithub.codeberg.page/badge.svg)](https://nogithub.codeberg.page)
(The only purpose of this is learning Rust!)
## To-do
- [x] Read commands from `stdin`
- [ ] Exit with last child termination code
- [ ] Handle background jobs
- [ ] Handle pipes
- [ ] Handle double quotes
- [ ] Handle variables
- [ ] Interaction with environment variables
- [ ] Handle aliases
- [ ] Builtins
- [ ] `cd`
- [ ] `exit`
- [ ] Special variables
- [ ] `_`
- [ ] `PS1`
- [ ] Positional variables
- [ ] Handle signals

View file

@ -1,5 +1,6 @@
use std::io as stdio;
use stdio::stdin;
use crate::parser;
pub struct Buffer {
buffer: String,
@ -27,11 +28,11 @@ impl Buffer {
}
}
pub fn is_empty(&self) -> bool {
self.buffer.is_empty()
}
pub fn get_buffer(&self) -> &String {
&self.buffer
pub fn parse(&self) -> Option<Vec<String>> {
if ! self.buffer.is_empty() {
Some(parser::parse(&self.buffer))
} else {
None
}
}
}

23
src/job.rs Normal file
View file

@ -0,0 +1,23 @@
use std::process::{
Command,
ExitStatus,
};
use std::io::{
Result,
Error,
ErrorKind,
};
pub fn execute(mut argv: Vec<String>) -> Result<ExitStatus> {
let mut command = Command::new(&argv[0]);
argv.remove(0);
command.args(argv);
let child = command.spawn();
if child.is_ok() {
child.unwrap().wait()
} else {
Err(Error::new(ErrorKind::Other, "failed to spawn child process"))
}
}

View file

@ -3,21 +3,20 @@ use std::process::exit;
mod input;
mod output;
mod parser;
mod job;
fn main() {
let mut buffer = input::Buffer::new();
let mut bytes_read: usize = 1;
let mut command_line: String;
let mut argv: Vec<String>;
let mut argv: Option<Vec<String>>;
while bytes_read != 0 {
output::print_ps1();
bytes_read = buffer.read_line();
if ! buffer.is_empty() {
command_line = buffer.get_buffer().to_string();
argv = parser::parse(&command_line);
println!("{:?}", argv);
argv = buffer.parse();
if argv.is_some() {
let _ = job::execute(argv.unwrap());
}
}