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|
#![allow(non_camel_case_types)]
use std::sync::{Arc, Mutex};
use std::{env::*, fs::OpenOptions, path::PathBuf};
use super::{Builtin, BuiltinError as Error, BuiltinResult as Result};
use crate::parse::CmdDisplay;
use crate::*;
pub struct cd;
impl Builtin for cd {
fn name(&self) -> &str {
"cd"
}
fn io(
&self,
se: Arc<Mutex<Session>>,
args: &[BString],
_stdin: &mut dyn Read,
_stdout: &mut dyn Write,
) -> Result {
let mut dir = match current_dir() {
Ok(path) => path.as_os_str().as_bytes().to_vec(),
Err(_) => vec![b'.'],
};
std::mem::swap(&mut dir, &mut se.lock().unwrap().prev_path);
match args.get(0).map(|v| &v[..]) {
Some(b"-") => {
let _ = set_current_dir(OsStr::from_bytes(&dir));
}
Some(path) => {
let _ = set_current_dir(OsStr::from_bytes(path));
}
None => {
if let Some(home) = std::env::var_os("HOME") {
let _ = set_current_dir(home);
}
}
}
Ok(())
}
}
pub struct clear;
impl Builtin for clear {
fn name(&self) -> &str {
"clear"
}
fn io(
&self,
_session: Arc<Mutex<Session>>,
_args: &[BString],
_stdin: &mut dyn Read,
stdout: &mut dyn Write,
) -> Result {
stdout.write_all(b"\x1B[2J\x1B[1;1H")?;
Ok(())
}
}
/// restart shell
pub struct re;
impl Builtin for re {
fn name(&self) -> &str {
"re"
}
fn io(
&self,
session: Arc<Mutex<Session>>,
_args: &[BString],
_stdin: &mut dyn Read,
_stdout: &mut dyn Write,
) -> Result {
session.lock().unwrap().raw.disable();
crate::reload::begin_reload();
session.lock().unwrap().raw.enable(); // something went wrong, let's restore raw mode
Ok(())
}
}
pub struct Sink {
name: &'static str,
append: bool,
}
impl Builtin for Sink {
fn name(&self) -> &str {
self.name
}
fn io(
&self,
_session: Arc<Mutex<Session>>,
args: &[BString],
stdin: &mut dyn Read,
_stdout: &mut dyn Write,
) -> Result {
let Some(path) = args.get(0) else {
// TODO exit code
return Ok(());
};
let path = PathBuf::from(OsStr::from_bytes(path));
let mut file = OpenOptions::new()
.write(true)
.create(true)
.append(self.append)
.open(path)?;
std::io::copy(stdin, &mut file)?;
Ok(())
}
}
pub const fn sink(name: &'static str, append: bool) -> Sink {
Sink { name, append }
}
pub struct from;
impl Builtin for from {
fn name(&self) -> &str {
"from"
}
fn io(
&self,
_session: Arc<Mutex<Session>>,
args: &[BString],
_stdin: &mut dyn Read,
stdout: &mut dyn Write,
) -> Result {
let Some(path) = args.get(0) else {
// TODO exit code
return Ok(());
};
let path = PathBuf::from(OsStr::from_bytes(path));
let mut file = OpenOptions::new().read(true).open(path)?;
std::io::copy(&mut file, stdout)?;
Ok(())
}
}
pub struct _type;
impl Builtin for _type {
fn name(&self) -> &str {
"type"
}
fn io(
&self,
session: Arc<Mutex<Session>>,
args: &[BString],
_stdin: &mut dyn Read,
stdout: &mut dyn Write,
) -> Result {
for arg in args {
let mut kind = String::from("not found");
{
let _se = session.lock().unwrap();
// TODO: look up functions in session
for b in super::BUILTINS {
if b.name().as_bytes() == &arg[..] {
kind = String::from("builtin");
break;
}
}
};
writeln!(stdout, "{} is {}", String::from_utf8_lossy(arg), kind)?;
}
Ok(())
}
}
pub struct builtins;
impl Builtin for builtins {
fn name(&self) -> &str {
"builtins"
}
fn io(
&self,
_session: Arc<Mutex<Session>>,
_args: &[BString],
_stdin: &mut dyn Read,
stdout: &mut dyn Write,
) -> Result {
let mut bs = super::BUILTINS.to_vec();
bs.sort_by_key(|b| b.name());
for b in bs.into_iter() {
write!(stdout, "{} ", b.name())?;
}
writeln!(stdout)?;
Ok(())
}
}
pub struct history;
impl Builtin for history {
fn name(&self) -> &str {
"history"
}
fn io(
&self,
session: Arc<Mutex<Session>>,
_args: &[BString],
_stdin: &mut dyn Read,
stdout: &mut dyn Write,
) -> Result {
// TODO: better history querying
let hist = session.lock().unwrap().history.clone();
for entry in hist {
stdout.write_all(&entry)?;
stdout.write_all(b"\n")?;
}
Ok(())
}
}
pub struct escape;
impl Builtin for escape {
fn name(&self) -> &str {
"escape"
}
fn io(
&self,
_session: Arc<Mutex<Session>>,
args: &[BString],
_stdin: &mut dyn Read,
stdout: &mut dyn Write,
) -> Result {
for arg in args.iter() {
let escaped = arg.escape_ascii().to_string();
stdout.write_all(escaped.as_bytes())?;
stdout.write_all(b" ")?;
}
Ok(())
}
}
pub struct parse;
impl Builtin for parse {
fn name(&self) -> &str {
"parse"
}
fn io(
&self,
_session: Arc<Mutex<Session>>,
args: &[BString],
_stdin: &mut dyn Read,
stdout: &mut dyn Write,
) -> Result {
let mut is_ok = true;
for arg in args {
match crate::parse::do_parse(arg) {
Ok(parsed) => {
write!(stdout, "ok ")?;
parsed.cdisplay(stdout)?;
writeln!(stdout)?;
},
Err(err) => {
is_ok = false;
writeln!(stdout, "err {err:?}")?;
}
}
}
if is_ok { Ok(()) } else { Err(Error::Exit(-1)) }
}
}
|
