X-Git-Url: http://nitlanguage.org

diff --git a/src/toolcontext.nit b/src/toolcontext.nit
index b2ae21a..5b9d020 100644
--- a/src/toolcontext.nit
+++ b/src/toolcontext.nit
@@ -134,6 +134,33 @@ class ToolContext
 		end
 	end
 
+	# Executes a program while checking if it's available and if the execution ended correctly
+	#
+	# Stops execution and prints errors if the program isn't available or didn't end correctly
+	fun exec_and_check(args: Array[String], error: String)
+        do
+                var prog = args.first
+                args.remove_at 0
+
+                # Is the wanted program available?
+                var proc_which = new IProcess.from_a("which", [prog])
+                proc_which.wait
+                var res = proc_which.status
+                if res != 0 then
+                        print "{error}: executable \"{prog}\" not found"
+                        exit 1
+                end
+
+                # Execute the wanted program
+                var proc = new Process.from_a(prog, args)
+                proc.wait
+                res = proc.status
+                if res != 0 then
+                        print "{error}: execution of \"{prog} {args.join(" ")}\" failed"
+                        exit 1
+                end
+        end
+
 	# Global OptionContext
 	var option_context: OptionContext = new OptionContext