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|
use crate::*;
use std::path::{Path, PathBuf};
use std::{env, fs};
pub struct Suggestion {
pub display: BString,
pub delta: BString,
}
fn _path_completion(mut prefix: BString) -> io::Result<Vec<Suggestion>> {
let mut partial_entry = BString::new();
while let Some(c) = prefix.last().cloned() {
if c == b'/' {
break;
}
partial_entry.push(c);
prefix.pop();
}
partial_entry.reverse();
let mut sugs = Vec::new();
if prefix.is_empty() {
prefix.push(b'.');
}
for entry in fs::read_dir(OsStr::from_bytes(&prefix))? {
let entry = entry?;
let name = entry.file_name().as_bytes().to_vec();
if name.starts_with(&partial_entry) {
let mut delta = name[partial_entry.len()..].to_vec();
let is_dir = entry.metadata().map(|m| m.is_dir()).unwrap_or(false);
if is_dir {
delta.push(b'/');
} else {
delta.push(b' ');
}
sugs.push(Suggestion {
display: name,
delta,
});
}
}
Ok(sugs)
}
pub fn path_completion(prefix: BString) -> Vec<Suggestion> {
match _path_completion(prefix) {
Ok(suggestions) => suggestions,
Err(err) => {
println!("path completion failed: {err:?}\r");
Vec::new()
}
}
}
pub fn variable_completion(session: Arc<Mutex<Session>>, prefix: BString) -> Vec<Suggestion> {
let se = session.lock().unwrap();
let mut out = Vec::new();
for var in se.vars.keys() {
if var.starts_with(&prefix) {
out.push(Suggestion {
display: var.to_vec(),
delta: var[prefix.len()..].to_vec(),
});
}
}
drop(se);
for var in env::vars_os() {
let var = var.0.as_bytes();
if var.starts_with(&prefix) {
out.push(Suggestion {
display: var.to_vec(),
delta: var[prefix.len()..].to_vec(),
});
}
}
out
}
#[derive(Default)]
pub struct PathCache {
binaries: HashMap<BString, PathBuf>,
}
fn is_executable(path: &Path) -> bool {
use std::os::unix::fs::PermissionsExt;
fs::metadata(path)
.map(|m| m.permissions().mode() & 0o111 != 0)
.unwrap_or(false)
}
pub fn populate_path_cache(session: Arc<Mutex<Session>>) {
let path_var = env::var_os("PATH").unwrap();
let mut binaries = HashMap::new();
for dir in env::split_paths(&path_var) {
if let Ok(entries) = fs::read_dir(&dir) {
for entry in entries.flatten() {
let path = entry.path();
if path.is_file() && is_executable(&path) {
binaries.insert(path.file_name().unwrap().as_bytes().to_vec(), path);
}
}
}
}
session.lock().unwrap().path_cache = PathCache { binaries };
}
pub fn command_completion(session: Arc<Mutex<Session>>, prefix: BString) -> Vec<Suggestion> {
let se = session.lock().unwrap();
let mut out = Vec::new();
for fun in se
.funs
.keys()
.chain(se.builtins.keys())
.chain(se.path_cache.binaries.keys())
{
if fun.starts_with(&prefix) {
out.push(Suggestion {
display: fun.to_vec(),
delta: fun[prefix.len()..].to_vec(),
})
}
}
for s in out.iter_mut() {
s.delta.push(b' ');
}
out
}
|
