src/buffer.rs

@@ -2,8 +2,6 @@ use std::io as stdio;
 use stdio::stdin;
 use crate::parser;
 use crate::job;
-use std::process::ExitStatus;
-use std::io::Result;
 
 pub struct Buffer {
     buffer: String,
@@ -33,12 +31,25 @@ impl Buffer {
         }
     }
 
-    pub fn try_spawn(&mut self) -> Option<Result<ExitStatus>> {
+    pub fn try_spawn(&mut self) -> Option<i32> {
         if ! self.buffer.is_empty() {
             self.argv = parser::parse(&self.buffer);
-            Some(job::execute(&mut self.argv))
+            let result = job::execute(&mut self.argv);
+
+            if result.is_ok() {
+                let result = result.unwrap();
+
+                if result.code().is_some() {
+                    return Some(result.code().unwrap());
                 } else {
                     None
                 }
+            } else {
+                eprintln!("{}", result.unwrap_err());
+                return Some(127);
+            }
+        } else {
+            return None;
+        }
     }
 }

src/job.rs

@@ -18,6 +18,6 @@ pub fn execute(argv: &mut Vec<String>) -> Result<ExitStatus> {
     if child.is_ok() {
         child.unwrap().wait()
     } else {
-        Err(Error::new(ErrorKind::Other, "failed to spawn child process"))
+        Err(Error::new(ErrorKind::Other, "command not found"))
     }
 }

src/main.rs

@@ -3,18 +3,14 @@ mod parser;
 mod job;
 mod variables;
 
-use std::io::Result;
-use std::process::{
-    ExitStatus,
-    exit,
-};
+use std::process::exit;
 use variables::Variables;
 use buffer::Buffer;
 
 fn main() {
     let mut buffer = Buffer::new();
     let mut bytes_read: usize = 1;
-    let mut exit_status: Option<Result<ExitStatus>>;
+    let mut exit_status: Option<i32>;
     let mut exit_code: i32 = 0;
     let mut variables = Variables::new();
 
@@ -25,16 +21,7 @@ fn main() {
         exit_status = buffer.try_spawn();
 
         if exit_status.is_some() {
-            let exit_status = exit_status.unwrap();
-            if exit_status.is_ok() {
-                let exit_status = exit_status.unwrap();
-
-                if exit_status.code().is_some() {
-                    exit_code = exit_status.code().unwrap();
-                }
-            } else {
-                exit_code = 1;
-            }
+            exit_code = exit_status.unwrap();
         }
     }