From 544609b40f0633f451ae94c60cf29005edddfad2 Mon Sep 17 00:00:00 2001
From: Brian Gianforcaro <bgianf@serenityos.org>
Date: Sun, 20 Mar 2022 13:30:32 -0700
Subject: [PATCH] printf: Port to LibMain

---
 Userland/Utilities/CMakeLists.txt |  1 +
 Userland/Utilities/printf.cpp     | 10 +++++++---
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/Userland/Utilities/CMakeLists.txt b/Userland/Utilities/CMakeLists.txt
index 7a0c2de72d..e7e60f4aa1 100644
--- a/Userland/Utilities/CMakeLists.txt
+++ b/Userland/Utilities/CMakeLists.txt
@@ -162,6 +162,7 @@ target_link_libraries(ping LibMain)
 target_link_libraries(pls LibCrypt LibMain)
 target_link_libraries(pmap LibMain)
 target_link_libraries(pmemdump LibMain)
+target_link_libraries(printf LibMain)
 target_link_libraries(pro LibMain LibProtocol)
 target_link_libraries(profile LibMain)
 target_link_libraries(ps LibMain)
diff --git a/Userland/Utilities/printf.cpp b/Userland/Utilities/printf.cpp
index 1ea46d54b4..36099d4e7d 100644
--- a/Userland/Utilities/printf.cpp
+++ b/Userland/Utilities/printf.cpp
@@ -9,6 +9,7 @@
 #include <AK/String.h>
 #include <AK/StringBuilder.h>
 #include <AK/Types.h>
+#include <LibMain/Main.h>
 #include <stdio.h>
 #include <unistd.h>
 
@@ -253,10 +254,13 @@ static String handle_escapes(const char* string)
     return builder.build();
 }
 
-int main(int argc, char** argv)
+ErrorOr<int> serenity_main(Main::Arguments arguments)
 {
-    if (argc < 2)
-        return 1;
+    if (arguments.argc < 2)
+        return Error::from_errno(EINVAL);
+
+    auto argc = arguments.argc;
+    auto argv = arguments.argv;
 
     ++argv;
     String format = handle_escapes(*(argv++));