src/input.rs

@@ -1,15 +1,20 @@
 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,
+    argv: Vec<String>,
 }
 
 impl Buffer {
     pub fn new() -> Self {
         Self {
             buffer: String::new(),
+            argv: vec![],
         }
     }
 
@@ -28,9 +33,10 @@ impl Buffer {
         }
     }
 
-    pub fn parse(&self) -> Option<Vec<String>> {
+    pub fn try_spawn(&mut self) -> Option<Result<ExitStatus>> {
         if ! self.buffer.is_empty() {
-            Some(parser::parse(&self.buffer))
+            self.argv = parser::parse(&self.buffer);
+            Some(job::execute(&mut self.argv))
         } else {
             None
         }

src/job.rs

@@ -8,7 +8,7 @@ use std::io::{
     ErrorKind,
 };
 
-pub fn execute(mut argv: Vec<String>) -> Result<ExitStatus> {
+pub fn execute(argv: &mut Vec<String>) -> Result<ExitStatus> {
     let mut command = Command::new(&argv[0]);
     argv.remove(0);
     command.args(argv);

src/main.rs

@@ -12,25 +12,22 @@ mod job;
 fn main() {
     let mut buffer = input::Buffer::new();
     let mut bytes_read: usize = 1;
-    let mut argv: Option<Vec<String>>;
+    let mut exit_status: Option<Result<ExitStatus>>;
-    let mut exit_status: Result<ExitStatus>;
     let mut exit_code: i32 = 0;
 
     while bytes_read != 0 {
         output::print_ps1();
         bytes_read = buffer.read_line();
 
-        argv = buffer.parse();
+        exit_status = buffer.try_spawn();
-        if argv.is_some() {
-            exit_status = job::execute(argv.unwrap());
 
+        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;
                 }
             } else {
                 exit_code = 1;