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|
use crate::{command::dispatch_command, Command, State};
use clap::Parser;
use libkeks::instance::Instance;
use log::{error, info, warn};
use rustyline::{
completion::{Candidate, Completer},
config::Configurer,
error::ReadlineError,
highlight::Highlighter,
hint::{Hint, Hinter},
validate::{ValidationResult, Validator},
Editor, Helper,
};
use std::{borrow::Cow, sync::Arc};
use tokio::sync::RwLock;
pub(crate) async fn repl(inst: Arc<Instance>, state: Arc<RwLock<State>>) -> anyhow::Result<()> {
let mut rl = Editor::new()?;
rl.set_auto_add_history(true);
rl.set_helper(Some(ReplHelper {}));
loop {
match rl.readline("> ") {
Ok(line) => match shlex::split(&line) {
Some(tokens) => match Command::try_parse_from(tokens) {
Ok(command) => match dispatch_command(&inst, &state, command).await {
Ok(()) => (),
Err(err) => error!(target: "rift", "{err}"),
},
Err(err) => err.print().unwrap(),
},
None => warn!("fix your quoting"),
},
Err(ReadlineError::Eof) => {
info!("exit");
break;
}
Err(ReadlineError::Interrupted) => {
info!("interrupted; exiting...");
break;
}
Err(e) => Err(e)?,
}
}
Ok(())
}
struct ReplHelper {}
impl Helper for ReplHelper {}
impl Validator for ReplHelper {
fn validate(
&self,
ctx: &mut rustyline::validate::ValidationContext,
) -> rustyline::Result<rustyline::validate::ValidationResult> {
let _ = ctx;
match shlex::split(ctx.input()) {
Some(_tokens) => Ok(ValidationResult::Valid(None)),
None => Ok(ValidationResult::Invalid(Some(
" incorrect quoting".to_string(),
))),
}
}
fn validate_while_typing(&self) -> bool {
true
}
}
impl Hinter for ReplHelper {
type Hint = ReplHint;
fn hint(&self, line: &str, pos: usize, ctx: &rustyline::Context<'_>) -> Option<Self::Hint> {
let _ = (line, pos, ctx);
None
}
}
struct ReplHint;
impl Hint for ReplHint {
fn display(&self) -> &str {
""
}
fn completion(&self) -> Option<&str> {
None
}
}
impl Completer for ReplHelper {
type Candidate = ReplCandidate;
fn complete(
&self,
line: &str,
pos: usize,
ctx: &rustyline::Context<'_>,
) -> rustyline::Result<(usize, Vec<Self::Candidate>)> {
let _ = (line, pos, ctx);
Ok((0, Vec::with_capacity(0)))
}
fn update(
&self,
line: &mut rustyline::line_buffer::LineBuffer,
start: usize,
elected: &str,
cl: &mut rustyline::Changeset,
) {
let end = line.pos();
line.replace(start..end, elected, cl);
}
}
struct ReplCandidate {}
impl Candidate for ReplCandidate {
fn display(&self) -> &str {
""
}
fn replacement(&self) -> &str {
""
}
}
impl Highlighter for ReplHelper {
fn highlight_prompt<'b, 's: 'b, 'p: 'b>(
&'s self,
prompt: &'p str,
_default: bool,
) -> Cow<'b, str> {
Cow::Borrowed(prompt)
}
fn highlight_hint<'h>(&self, hint: &'h str) -> Cow<'h, str> {
Cow::Owned("\x1b[1m".to_owned() + hint + "\x1b[m")
}
fn highlight<'l>(&self, line: &'l str, _pos: usize) -> Cow<'l, str> {
Cow::Borrowed(line)
}
fn highlight_char(&self, _line: &str, _pos: usize, _forced: bool) -> bool {
false
}
}
|
