New output option to print stdout and stderr

Signed-off-by: Alexander Kluth <[email protected]>

Dofile.example

@@ -2,13 +2,19 @@ description = "Dofile example"
 
 [tasks]
 
-    [tasks.build]
+    [tasks.ls]
     commands = [
-        'echo "Ja hallo!',
+        'ls /tmp',
         'ls -l'
     ]
 
-    [tasks.clean]
+    [tasks.date]
     commands = [
-        'echo "Ui ui ui ui ui!"',
+        'date',
+    ]
+    output = true
+
+    [tasks.fail]
+    commands = [
+        'i-do-not-exist'
     ]

main.go

@@ -24,6 +24,7 @@ type Dofile struct {
 
 type task struct {
 	Commands []string
+	Output bool
 }
 
 func remove(slice []string, s int) []string {
@@ -50,9 +51,21 @@ func executeTask(doFile Dofile, taskName string) {
 			cmdName := tokens[0]
 			tokens = remove(tokens, 0)
 
-			if err := exec.Command(cmdName, tokens...).Run(); err != nil {
-				fmt.Fprintln(os.Stderr, err)
-				os.Exit(1)
+			cmd := exec.Command(cmdName, tokens...)
+
+			if doFile.Tasks[taskName].Output == true {
+				out, _ := cmd.CombinedOutput()
+
+				//TODO: Identify if the executable does not exist
+				//if err != nil {
+				//	log.Fatalf("cmd.Run() failed with %s\n", err)
+				//}
+				fmt.Printf(string(out))
+			} else {
+				if err := cmd.Run(); err != nil {
+					fmt.Fprintln(os.Stderr, err)
+					os.Exit(1)
+				}
 			}
 		}
 	} else {