forked from extern/nushell
56 lines
1.5 KiB
Rust
56 lines
1.5 KiB
Rust
use crate::cli::History as HistoryFile;
|
|
use crate::commands::WholeStreamCommand;
|
|
use crate::prelude::*;
|
|
use nu_errors::ShellError;
|
|
use nu_protocol::{ReturnSuccess, Signature, UntaggedValue};
|
|
use std::fs::File;
|
|
use std::io::{BufRead, BufReader};
|
|
|
|
pub struct History;
|
|
|
|
#[derive(Deserialize)]
|
|
pub struct HistoryArgs {}
|
|
|
|
impl WholeStreamCommand for History {
|
|
fn name(&self) -> &str {
|
|
"history"
|
|
}
|
|
|
|
fn signature(&self) -> Signature {
|
|
Signature::build("history")
|
|
}
|
|
|
|
fn usage(&self) -> &str {
|
|
"Display command history."
|
|
}
|
|
|
|
fn run(
|
|
&self,
|
|
args: CommandArgs,
|
|
registry: &CommandRegistry,
|
|
) -> Result<OutputStream, ShellError> {
|
|
args.process(registry, history)?.run()
|
|
}
|
|
}
|
|
|
|
fn history(
|
|
_: HistoryArgs,
|
|
RunnableContext { name: tag, .. }: RunnableContext,
|
|
) -> Result<OutputStream, ShellError> {
|
|
let stream = async_stream! {
|
|
let history_path = HistoryFile::path();
|
|
let file = File::open(history_path);
|
|
if let Ok(file) = file {
|
|
let reader = BufReader::new(file);
|
|
for line in reader.lines() {
|
|
if let Ok(line) = line {
|
|
yield ReturnSuccess::value(UntaggedValue::string(line).into_value(tag.clone()));
|
|
}
|
|
}
|
|
} else {
|
|
yield Err(ShellError::labeled_error("Could not open history", "history file could not be opened", tag.clone()));
|
|
}
|
|
};
|
|
Ok(stream.to_output_stream())
|
|
}
|