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use std::collections::HashMap;
use super::{parse_command, REPL_COMMANDS};
use crate::config::GlobalConfig;
use reedline::{Completer, Span, Suggestion};
impl Completer for ReplCompleter {
fn complete(&mut self, line: &str, pos: usize) -> Vec<Suggestion> {
let mut suggestions = vec![];
if line.len() != pos {
return suggestions;
}
let line = &line[0..pos];
if let Some((cmd, args)) = parse_command(line) {
let commands: Vec<_> = self
.commands
.iter()
.filter(|(cmd_name, _)| match args {
Some(args) => cmd_name.starts_with(&format!("{cmd} {args}")),
None => cmd_name.starts_with(cmd),
})
.collect();
if args.is_some() || line.ends_with(' ') {
let args = args.unwrap_or_default();
let start = line.chars().take_while(|c| *c == ' ').count() + cmd.len() + 1;
let span = Span::new(start, pos);
suggestions.extend(
self.config
.read()
.repl_complete(cmd, args)
.iter()
.map(|name| create_suggestion(name.clone(), None, span)),
)
}
if suggestions.is_empty() {
let start = line.chars().take_while(|c| *c == ' ').count();
let span = Span::new(start, pos);
suggestions.extend(commands.iter().map(|(name, desc)| {
let has_group = self.groups.get(name).map(|v| *v > 1).unwrap_or_default();
let name = if has_group {
name.to_string()
} else {
format!("{name} ")
};
create_suggestion(name, Some(desc.to_string()), span)
}))
}
}
suggestions
}
}
pub struct ReplCompleter {
config: GlobalConfig,
commands: Vec<(&'static str, &'static str)>,
groups: HashMap<&'static str, usize>,
}
impl ReplCompleter {
pub fn new(config: &GlobalConfig) -> Self {
let mut groups = HashMap::new();
let mut commands = REPL_COMMANDS.to_vec();
commands.sort_by(|(a, _), (b, _)| a.cmp(b));
for (name, _) in REPL_COMMANDS.iter() {
if let Some(count) = groups.get(name) {
groups.insert(*name, count + 1);
} else {
groups.insert(*name, 1);
}
}
Self {
config: config.clone(),
commands,
groups,
}
}
}
fn create_suggestion(value: String, description: Option<String>, span: Span) -> Suggestion {
Suggestion {
value,
description,
extra: None,
span,
append_whitespace: false,
}
}
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