Implement pipe handling (#22)

Ref: rust-lang/rust#46016 (comment)
Fixes: #21

Author: aymanbagabas

Cargo.toml

@@ -48,3 +48,6 @@ features = ["precommit-hook", "user-hooks"]
 
 [features]
 pym = ["pyo3"]
+
+[target.'cfg(target_family = "unix")'.dependencies]
+nix = "0.17.0"

src/cli.rs

@@ -9,8 +9,24 @@ use crate::{
 };
 use clap::{crate_name, crate_version, App, AppSettings};
 
+/// This should be called before calling any cli method or printing any output.
+pub fn reset_signal_pipe_handler() -> Result<(), ()> {
+    #[cfg(target_family = "unix")]
+    {
+        use nix::sys::signal;
+
+        unsafe {
+            signal::signal(signal::Signal::SIGPIPE, signal::SigHandler::SigDfl)
+                .map_err(|e| println!("{:?}", e))?;
+        }
+    }
+
+    Ok(())
+}
+
 /// Get maches
 pub async fn main() -> Result<(), Error> {
+    let _ = reset_signal_pipe_handler();
     let m = App::new(crate_name!())
         .version(crate_version!())
         .about("May the Code be with You 👻")

src/cmds/list.rs

@@ -37,6 +37,7 @@ use super::Command;
 use crate::{cache::Cache, err::Error, helper::Digit};
 use async_trait::async_trait;
 use clap::{App, Arg, ArgMatches, SubCommand};
+use std::io::{self, Write};
 /// Abstract `list` command
 ///
 /// ## handler
@@ -168,9 +169,8 @@ impl Command for ListCommand {
             ps.retain(|x| x.name.contains(&keyword));
         }
 
-        for p in &ps {
-            println!("{}", p);
-        }
+        let out: Vec<String> = ps.iter().map(ToString::to_string).collect();
+        io::stdout().write_all(out.join("\n").as_bytes())?;
 
         // one more thing, filter stat
         if m.is_present("stat") {