nushell/src/commands/open.rs

use crate::errors::ShellError;
use crate::object::{Primitive, Value};
use crate::prelude::*;
use std::path::PathBuf;

pub fn open(args: CommandArgs) -> Result<OutputStream, ShellError> {
    let cwd = args.env.lock().unwrap().cwd().to_path_buf();
    let mut full_path = PathBuf::from(cwd);
    match &args.args[0] {
        Value::Primitive(Primitive::String(s)) => full_path.push(s),
        _ => {}
    }

    let contents = std::fs::read_to_string(&full_path).unwrap();

    let mut stream = VecDeque::new();
    stream.push_back(ReturnValue::Value(Value::Primitive(Primitive::String(contents))));

    Ok(stream.boxed())
}