src/commit.rs: update to display borg commit progression

src/commit.rs

 use crate::init;
 use std::{
     path::PathBuf,
-    process::{exit, Command},
+    process::{exit, Command, Stdio},
 };
 
 /// Check if .borg repository and results folder exists
@@ -37,7 +37,6 @@ pub fn get_current_commit() -> String {
     commit
 }
 
-
 /// function that deletes commit if needed
 pub fn delete_commit(commit: &str, borg_path: &PathBuf) {
     let output = Command::new("borg")
@@ -54,7 +53,6 @@ pub fn delete_commit(commit: &str, borg_path: &PathBuf) {
     }
 }
 
-
 /// Create a commit of the results folder named as the current git commit id
 pub fn commit(compression: String, mut commit_id: String, update: bool) {
     let (borg_folder, results_folder) = check_path();
@@ -64,7 +62,7 @@ pub fn commit(compression: String, mut commit_id: String, update: bool) {
     if update {
         delete_commit(&commit_id, &borg_folder);
     }
-    let output = Command::new("borg")
+    let mut output = Command::new("borg")
         .arg("create")
         .arg("--stats")
         .arg("--progress")
@@ -72,12 +70,17 @@ pub fn commit(compression: String, mut commit_id: String, update: bool) {
         .arg(compression)
         .arg(format!("{}::{}", borg_folder.to_str().unwrap(), commit_id))
         .arg(results_folder.to_str().unwrap())
-        .output()
-        .unwrap();
-    match output.status.code().unwrap() {
+        .stdout(Stdio::piped())
+        .spawn()
+        .unwrap_or_else(|e| {
+            eprintln!("An error occured during borg create ! {}", e);
+            exit(8);
+        });
+    let ecode = output.wait().expect("error");
+    match ecode.code().unwrap() { 
         0 => (),
         num => {
-            eprintln!("{}", String::from_utf8(output.stderr).unwrap());
+            eprintln!("{}", ecode.to_string());
             exit(num);
         }
     }