From 62283ade912bbe0c2ff92509a0ed2a787f330853 Mon Sep 17 00:00:00 2001
From: Sergey Bugaev <bugaevc@serenityos.org>
Date: Tue, 26 May 2020 13:35:09 +0300
Subject: [PATCH] Userland: Port sleep(1) to Core::ArgsParser

---
 Userland/sleep.cpp | 18 +++++++-----------
 1 file changed, 7 insertions(+), 11 deletions(-)

diff --git a/Userland/sleep.cpp b/Userland/sleep.cpp
index e4b40f05d7..76d7440e21 100644
--- a/Userland/sleep.cpp
+++ b/Userland/sleep.cpp
@@ -24,7 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <AK/String.h>
+#include <LibCore/ArgsParser.h>
 #include <signal.h>
 #include <stdio.h>
 #include <string.h>
@@ -41,16 +41,12 @@ int main(int argc, char** argv)
         return 1;
     }
 
-    if (argc != 2) {
-        printf("usage: sleep <seconds>\n");
-        return 1;
-    }
-    bool ok;
-    unsigned secs = String(argv[1]).to_uint(ok);
-    if (!ok) {
-        fprintf(stderr, "Not a valid number of seconds: \"%s\"\n", argv[1]);
-        return 1;
-    }
+    int secs;
+
+    Core::ArgsParser args_parser;
+    args_parser.add_positional_argument(secs, "Number of seconds to sleep for", "num-seconds");
+    args_parser.parse(argc, argv);
+
     struct sigaction sa;
     memset(&sa, 0, sizeof(struct sigaction));
     sa.sa_handler = handle_sigint;