From fe2b66ed1547663aa353bfb05763305fbcdea88b Mon Sep 17 00:00:00 2001
From: Aqua-sama <aqua@iserlohn-fortress.net>
Date: Sun, 11 Oct 2020 20:26:23 +0300
Subject: Add dummy SIGINT handler

---
 Cargo.lock    | 11 ++++++++++-
 Cargo.toml    |  8 ++++++--
 LICENSE.md    | 23 +++++++++++++++++++++++
 src/main.rs   | 26 +++++++++++++++-----------
 src/prompt.rs |  2 +-
 src/user.rs   |  1 -
 6 files changed, 55 insertions(+), 16 deletions(-)
 create mode 100644 LICENSE.md

diff --git a/Cargo.lock b/Cargo.lock
index 714dcaf..da0c46e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,5 +1,14 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
 [[package]]
-name = "rshell"
+name = "libc"
+version = "0.2.79"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2448f6066e80e3bfc792e9c98bf705b4b0fc6e8ef5b43e5889aff0eaa9c58743"
+
+[[package]]
+name = "rs"
 version = "0.1.0"
+dependencies = [
+ "libc",
+]
diff --git a/Cargo.toml b/Cargo.toml
index 933b672..9859720 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,9 +1,13 @@
 [package]
-name = "rshell"
+name = "rs"
 version = "0.1.0"
 authors = ["Aqua-sama <aqua@iserlohn-fortress.net>"]
+license = "BSD-2-Clause"
 edition = "2018"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+# See more keys and their definitions at
+# https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+libc = "0.2"
+
diff --git a/LICENSE.md b/LICENSE.md
new file mode 100644
index 0000000..c0a3081
--- /dev/null
+++ b/LICENSE.md
@@ -0,0 +1,23 @@
+Copyright (c) 2020 aqua@iserlohn-fortress.net
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGE.
+
diff --git a/src/main.rs b/src/main.rs
index 403fd33..01e5fbd 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,23 +1,26 @@
-use std::process::Command;
-use std::process::Stdio;
+use std::process::{Command, Stdio};
 
 mod builtins;
 mod prompt;
 
+fn sigint_handler(dummy: i32) {
+    println!("sigint_handler: {}", dummy);
+}
+
 fn main() {
+
+    unsafe {
+        // capture Ctrl+C (SIGINT)
+        libc::signal(libc::SIGINT, sigint_handler as libc::sighandler_t);
+    }
+
     match std::fs::read_to_string("/etc/motd") {
-        Ok(motd) => println!("{}", motd),
+        Ok(motd) => print!("{}", motd),
         Err(_) => {}
     }
 
-    let prompt = match prompt::Prompt::new() {
-        Ok(p) => p,
-        Err(e) => panic!(e),
-    };
-    let mut cwd = match std::env::current_dir() {
-        Ok(p) => p,
-        Err(e) => panic!(e),
-    };
+    let prompt = prompt::Prompt::new().unwrap();
+    let mut cwd = std::env::current_dir().unwrap();
 
     loop {
         prompt.print(&cwd);
@@ -91,4 +94,5 @@ fn main() {
             }
         }
     } // loop
+
 }
diff --git a/src/prompt.rs b/src/prompt.rs
index 40c96cc..acb11e4 100644
--- a/src/prompt.rs
+++ b/src/prompt.rs
@@ -14,7 +14,7 @@ impl Prompt {
         let hostname = user::hostname()?;
         let ready = if username == "root" { "#" } else { "$" }.to_owned();
 
-        let ps1 = match std::env::var("PS1") {
+        let ps1 = match std::env::var("PRMOPT") {
             Ok(val) => val,
             Err(_) => String::from("  {USER}@{HOST} [{PWD}]\n{$} "),
         }
diff --git a/src/user.rs b/src/user.rs
index fedf12b..9744928 100644
--- a/src/user.rs
+++ b/src/user.rs
@@ -46,4 +46,3 @@ fn test_username() {
     };
     assert_eq!(username__, username().unwrap());
 }
-
-- 
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