Improve Windows keyboard translation to Linux

libc/intrin/describecontrolkeystate.c

@@ -0,0 +1,38 @@
+/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
+│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
+╞══════════════════════════════════════════════════════════════════════════════╡
+│ Copyright 2022 Justine Alexandra Roberts Tunney                              │
+│                                                                              │
+│ Permission to use, copy, modify, and/or distribute this software for         │
+│ any purpose with or without fee is hereby granted, provided that the         │
+│ above copyright notice and this permission notice appear in all copies.      │
+│                                                                              │
+│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL                │
+│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED                │
+│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE             │
+│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL         │
+│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        │
+│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER               │
+│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
+│ PERFORMANCE OF THIS SOFTWARE.                                                │
+╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/intrin/describeflags.internal.h"
+#include "libc/macros.internal.h"
+#include "libc/nt/struct/inputrecord.h"
+
+static const struct DescribeFlags kControlKeyState[] = {
+    {kNtRightAltPressed, "RightAltPressed"},    //
+    {kNtLeftAltPressed, "LeftAltPressed"},      //
+    {kNtRightCtrlPressed, "RightCtrlPressed"},  //
+    {kNtLeftCtrlPressed, "LeftCtrlPressed"},    //
+    {kNtShiftPressed, "ShiftPressed"},          //
+    {kNtNumlockOn, "NumlockOn"},                //
+    {kNtScrolllockOn, "ScrolllockOn"},          //
+    {kNtCapslockOn, "CapslockOn"},              //
+    {kNtEnhancedKey, "EnhancedKey"},            //
+};
+
+const char *(DescribeControlKeyState)(char buf[64], uint32_t x) {
+  return DescribeFlags(buf, 64, kControlKeyState, ARRAYLEN(kControlKeyState),
+                       "kNt", x);
+}