From 3fb853d7b776eae50c4482dab199362c4ce31685 Mon Sep 17 00:00:00 2001
From: flash <me@flash.moe>
Date: Wed, 9 Oct 2024 02:22:45 +0200
Subject: [PATCH] Added CTRL+C handling.

---
 source/app.d | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 56 insertions(+), 1 deletion(-)

diff --git a/source/app.d b/source/app.d
index 6eb989b..04ca780 100644
--- a/source/app.d
+++ b/source/app.d
@@ -1,5 +1,60 @@
 import std.stdio;
+import core.thread;
+import core.stdc.signal;
+import core.sys.windows.windows;
+
+__gshared bool hasCancelled;
+
+version(Posix) {
+    extern(C) void signalHander(int num) nothrow @nogc @system {
+        if(num == SIGINT)
+            hasCancelled = true;
+    }
+}
+
+version(Windows) {
+    extern(Windows) BOOL ctrlHandler(DWORD fdwCtrlType) nothrow @nogc @system {
+        switch(fdwCtrlType) {
+            case CTRL_C_EVENT:
+            case CTRL_CLOSE_EVENT:
+                hasCancelled = true;
+                return TRUE;
+
+            default:
+                return FALSE;
+        }
+    }
+}
 
 void main() {
-    writeln("meow");
+    import std.range : padLeft;
+    import std.string : format;
+
+    version(Windows)
+        if(!SetConsoleCtrlHandler(&ctrlHandler, TRUE))
+            stderr.writeln("Failed to register Windows CTRL handler.");
+
+    version(Posix)
+        signal(SIGINT, &signalHander);
+
+    if(hasCancelled) return;
+
+    writeln(r"    __  ____ __         __      ");
+    writeln(r"   /  |/  (_) /______  / /_____ ");
+    writeln(r"  / /|_/ / / //_/ __ \/ __/ __ \");
+    writeln(r" / /  / / / ,< / /_/ / /_/ /_/ /");
+    writeln(r"/_/  /_/_/_/|_|\____/\__/\____/ ");
+
+    debug writeln("== %s ========= DEBUG ==".format("aabbccddee"));
+    else writeln("v0.0.0".padLeft(' ', 30));
+
+    if(hasCancelled) return;
+
+    for(;;) {
+        Thread.sleep(1.seconds);
+        if(hasCancelled)
+            break;
+    }
+
+    writeln("Exiting!");
 }