From 6c3db7752582906245d9d5c70b80823d7a2e4e91 Mon Sep 17 00:00:00 2001
From: fdai7381 <leon.bohnwagner@informatik.hs-fulda.de>
Date: Tue, 17 Jan 2023 20:34:44 +0100
Subject: [PATCH] fix: continue on empty line

---
 src/error.rs   | 1 +
 src/execute.rs | 3 +++
 src/main.rs    | 3 +++
 3 files changed, 7 insertions(+)

diff --git a/src/error.rs b/src/error.rs
index 291a017..49740d9 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -1,3 +1,4 @@
 pub enum ShellError {
+    EmptyLine,
     Execute(String),
 }
diff --git a/src/execute.rs b/src/execute.rs
index bfce3d2..362d217 100644
--- a/src/execute.rs
+++ b/src/execute.rs
@@ -5,6 +5,9 @@ use crate::error::ShellError::Execute;
 use crate::parse::parse_line;
 
 pub fn interpret(line: &str) -> Result<(), ShellError> {
+    if line.is_empty() {
+        return Err(ShellError::EmptyLine);
+    }
     let (keyword, args) = parse_line(line);
 
     let mut command = Command::new(keyword);
diff --git a/src/main.rs b/src/main.rs
index a8ebe92..75728d3 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -21,6 +21,9 @@ fn main() -> Result<()> {
         match readline {
             Ok(line) => match interpret(&line) {
                 Ok(_) => {}
+                Err(ShellError::EmptyLine) => {
+                    continue;
+                }
                 Err(ShellError::Execute(err)) => {
                     eprintln!("{}", err)
                 }