RedfishPkg/Include: add common RedfishPkg header file.

IS_EMPTY_STRING macro is defined in multiple drivers in RedfishPkg.
So, I create RedfishCommon.h to keep common macros that we can use
in RedfishPkg.

Signed-off-by: Nickle Wang <nicklew@nvidia.com>

RedfishPkg/Include/RedfishCommon.h

@@ -0,0 +1,17 @@
+/** @file
+  This header file defines common macros for the use in RedfishPkg.
+
+  Copyright (c) 2024, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef REDFISH_COMMON_H_
+#define REDFISH_COMMON_H_
+
+#ifndef IS_EMPTY_STRING
+#define IS_EMPTY_STRING(a)  ((a) == NULL || (a)[0] == '\0')
+#endif
+
+#endif

RedfishPkg/Library/RedfishDebugLib/RedfishDebugLib.c

@@ -9,7 +9,7 @@
 **/
 
 #include <Uefi.h>
-
+#include <RedfishCommon.h>
 #include <Library/BaseLib.h>
 #include <Library/DebugLib.h>
 #include <Library/MemoryAllocationLib.h>
@@ -17,10 +17,6 @@
 #include <Library/RedfishHttpLib.h>
 #include <Library/UefiLib.h>
 
-#ifndef IS_EMPTY_STRING
-#define IS_EMPTY_STRING(a)  ((a) == NULL || (a)[0] == '\0')
-#endif
-
 #define REDFISH_JSON_STRING_LENGTH          200
 #define REDFISH_JSON_OUTPUT_FORMAT          (EDKII_JSON_COMPACT | EDKII_JSON_INDENT(2))
 #define REDFISH_PRINT_BUFFER_BYTES_PER_ROW  16

RedfishPkg/RedfishCredentialDxe/RedfishCredentialDxe.h

@@ -3,6 +3,7 @@
 
   (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
   (C) Copyright 2024 American Megatrends International LLC<BR>
+  Copyright (c) 2024, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 
   SPDX-License-Identifier: BSD-2-Clause-Patent
 
@@ -11,6 +12,7 @@
 #ifndef EDKII_REDFISH_CREDENTIAL_DXE_H_
 #define EDKII_REDFISH_CREDENTIAL_DXE_H_
 
+#include <RedfishCommon.h>
 #include <Protocol/EdkIIRedfishCredential2.h>
 
 #include <Library/BaseLib.h>
@@ -29,10 +31,6 @@
 #define REDFISH_MANAGER_ACCOUNT_COLLECTION_URI  L"AccountService/Accounts"
 #define REDFISH_URI_LENGTH                      128
 
-#ifndef IS_EMPTY_STRING
-#define IS_EMPTY_STRING(a)  ((a) == NULL || (a)[0] == '\0')
-#endif
-
 ///
 /// Definition of REDFISH_SERVICE_LIST
 ///

RedfishPkg/RedfishHttpDxe/RedfishHttpDxe.h

@@ -11,6 +11,7 @@
 #define EDKII_REDFISH_HTTP_DXE_H_
 
 #include <Uefi.h>
+#include <RedfishCommon.h>
 #include <IndustryStandard/Http11.h>
 
 #include <Library/UefiLib.h>
@@ -31,7 +32,6 @@
 #include <Protocol/EdkIIRedfishCredential2.h>
 #include <Protocol/RestEx.h>
 
-#define IS_EMPTY_STRING(a)  ((a) == NULL || (a)[0] == '\0')
 #define REDFISH_HTTP_CACHE_LIST_SIZE      0x80
 #define REDFISH_ERROR_MSG_MAX             128
 #define REDFISH_DEBUG_STRING_LENGTH       200

RedfishPkg/RedfishPlatformConfigDxe/RedfishPlatformConfigImpl.h

@@ -13,6 +13,7 @@
 #define EDKII_REDFISH_PLATFORM_CONFIG_IMPL_H_
 
 #include <Uefi.h>
+#include <RedfishCommon.h>
 
 //
 // Libraries
@@ -27,7 +28,6 @@
 #include <Library/UefiBootServicesTableLib.h>
 #include <Library/UefiLib.h>
 
-#define IS_EMPTY_STRING(a)  (a == NULL || a[0] == L'\0')
 #define ENGLISH_LANGUAGE_CODE  "en-US"
 #define X_UEFI_SCHEMA_PREFIX   "x-UEFI-redfish-"