Add simple application to dump strings from HII package

Signed-off-by: Konstantin Aladyshev <aladyshev22@gmail.com>

1 files changed, 43 insertions, 0 deletions

diff --git a/UefiLessonsPkg/ShowStrings/ShowStrings.c b/UefiLessonsPkg/ShowStrings/ShowStrings.c
new file mode 100644
index 0000000..00d0625
--- /dev/null
+++ b/UefiLessonsPkg/ShowStrings/ShowStrings.c
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2024, Konstantin Aladyshev <aladyshev22@gmail.com>
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiLib.h>
+#include <Library/HiiLib.h>
+#include <Library/MemoryAllocationLib.h>
+
+
+INTN
+EFIAPI
+ShellAppMain (
+  IN UINTN Argc,
+  IN CHAR16 **Argv
+  )
+{
+  if (Argc != 2) {
+    Print(L"Usage:\n");
+    Print(L"  ShowStrings [Package GUID]\n");
+    return EFI_INVALID_PARAMETER;
+  }
+
+  EFI_GUID PackageGuid;
+  EFI_STATUS Status = StrToGuid(Argv[1], &PackageGuid);
+  if (Status != RETURN_SUCCESS) {
+    Print(L"Error! Can't convert <Package GUID> argument to GUID\n");
+    return EFI_INVALID_PARAMETER;
+  }
+
+  EFI_HII_HANDLE* Handle = HiiGetHiiHandles(&PackageGuid);
+
+  for (UINTN i=1; i<0xFFFF; i++) {
+    EFI_STRING String = HiiGetString(*Handle, i, "en-US");
+    if (String != NULL) {
+      Print(L"ID=%d, %s\n", i, String);
+      FreePool(String);
+    }
+  }
+  return EFI_SUCCESS;
+}