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|
use std::{
fs::File,
io::{BufRead, BufReader, Read, Seek},
path::{Path, PathBuf},
};
use directories::UserDirs;
use eyre::{eyre, Result};
use super::{count_lines, Importer};
use crate::history::History;
#[derive(Debug)]
pub struct Bash<R> {
file: BufReader<R>,
strbuf: String,
loc: usize,
counter: i64,
}
impl<R: Read + Seek> Bash<R> {
fn new(r: R) -> Result<Self> {
let mut buf = BufReader::new(r);
let loc = count_lines(&mut buf)?;
Ok(Self {
file: buf,
strbuf: String::new(),
loc,
counter: 0,
})
}
}
impl Importer for Bash<File> {
const NAME: &'static str = "bash";
fn histpath() -> Result<PathBuf> {
let user_dirs = UserDirs::new().unwrap();
let home_dir = user_dirs.home_dir();
Ok(home_dir.join(".bash_history"))
}
fn parse(path: impl AsRef<Path>) -> Result<Self> {
Self::new(File::open(path)?)
}
}
impl<R: Read> Iterator for Bash<R> {
type Item = Result<History>;
fn next(&mut self) -> Option<Self::Item> {
self.strbuf.clear();
match self.file.read_line(&mut self.strbuf) {
Ok(0) => return None,
Ok(_) => (),
Err(e) => return Some(Err(eyre!("failed to read line: {}", e))), // we can skip past things like invalid utf8
}
self.loc -= 1;
while self.strbuf.ends_with("\\\n") {
if self.file.read_line(&mut self.strbuf).is_err() {
// There's a chance that the last line of a command has invalid
// characters, the only safe thing to do is break :/
// usually just invalid utf8 or smth
// however, we really need to avoid missing history, so it's
// better to have some items that should have been part of
// something else, than to miss things. So break.
break;
};
self.loc -= 1;
}
let time = chrono::Utc::now();
let offset = chrono::Duration::seconds(self.counter);
let time = time - offset;
self.counter += 1;
Some(Ok(History::new(
time,
self.strbuf.trim_end().to_string(),
String::from("unknown"),
-1,
-1,
None,
None,
)))
}
fn size_hint(&self) -> (usize, Option<usize>) {
(0, Some(self.loc))
}
}
#[cfg(test)]
mod tests {
use std::io::Cursor;
use super::Bash;
#[test]
fn test_parse_file() {
let input = r"cargo install atuin
cargo install atuin; \
cargo update
cargo :b̷i̶t̴r̵o̴t̴ ̵i̷s̴ ̷r̶e̵a̸l̷
";
let cursor = Cursor::new(input);
let mut bash = Bash::new(cursor).unwrap();
assert_eq!(bash.loc, 4);
assert_eq!(bash.size_hint(), (0, Some(4)));
assert_eq!(
&bash.next().unwrap().unwrap().command,
"cargo install atuin"
);
assert_eq!(
&bash.next().unwrap().unwrap().command,
"cargo install atuin; \\\ncargo update"
);
assert_eq!(
&bash.next().unwrap().unwrap().command,
"cargo :b̷i̶t̴r̵o̴t̴ ̵i̷s̴ ̷r̶e̵a̸l̷"
);
assert!(bash.next().is_none());
assert_eq!(bash.size_hint(), (0, Some(0)));
}
}
|
