[PATCH] ShellPkg Shell: Remove redundant functions

[shenglei <shenglei.zhang@intel.com>]

The redundant functions which are never called have been
removed. They are InternalShellProtocolDebugPrintMessage,
UpdateFileName,RemoveFileTag and IsValidCommandName.
https://bugzilla.tianocore.org/show_bug.cgi?id=1066

Cc: Jaben Carsey <jaben.carsey@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: shenglei <shenglei.zhang@intel.com>
---
 ShellPkg/Application/Shell/Shell.c            | 29 -------
 ShellPkg/Application/Shell/Shell.h            | 13 ---
 .../Shell/ShellParametersProtocol.c           | 24 ------
 ShellPkg/Application/Shell/ShellProtocol.c    | 81 +------------------
 4 files changed, 1 insertion(+), 146 deletions(-)

diff --git a/ShellPkg/Application/Shell/Shell.c b/ShellPkg/Application/Shell/Shell.c
index 47ae3c373c..397cfd1994 100644
--- a/ShellPkg/Application/Shell/Shell.c
+++ b/ShellPkg/Application/Shell/Shell.c
@@ -2752,35 +2752,6 @@ RunCommand(
 
 
 STATIC CONST UINT16 InvalidChars[] = {L'*', L'?', L'<', L'>', L'\\', L'/', L'\"', 0x0001, 0x0002};
-/**
-  Function determines if the CommandName COULD be a valid command.  It does not determine whether
-  this is a valid command.  It only checks for invalid characters.
-
-  @param[in] CommandName    The name to check
-
-  @retval TRUE              CommandName could be a command name
-  @retval FALSE             CommandName could not be a valid command name
-**/
-BOOLEAN
-IsValidCommandName(
-  IN CONST CHAR16     *CommandName
-  )
-{
-  UINTN Count;
-  if (CommandName == NULL) {
-    ASSERT(FALSE);
-    return (FALSE);
-  }
-  for ( Count = 0
-      ; Count < sizeof(InvalidChars) / sizeof(InvalidChars[0])
-      ; Count++
-     ){
-    if (ScanMem16(CommandName, StrSize(CommandName), InvalidChars[Count]) != NULL) {
-      return (FALSE);
-    }
-  }
-  return (TRUE);
-}
 
 /**
   Function to process a NSH script file via SHELL_FILE_HANDLE.
diff --git a/ShellPkg/Application/Shell/Shell.h b/ShellPkg/Application/Shell/Shell.h
index 69b19c6a2d..bad8f08d47 100644
--- a/ShellPkg/Application/Shell/Shell.h
+++ b/ShellPkg/Application/Shell/Shell.h
@@ -309,19 +309,6 @@ RunShellCommand(
   OUT EFI_STATUS    *CommandStatus
   );
 
-/**
-  Function determines if the CommandName COULD be a valid command.  It does not determine whether
-  this is a valid command.  It only checks for invalid characters.
-
-  @param[in] CommandName    The name to check
-
-  @retval TRUE              CommandName could be a command name
-  @retval FALSE             CommandName could not be a valid command name
-**/
-BOOLEAN
-IsValidCommandName(
-  IN CONST CHAR16     *CommandName
-  );
 
 /**
   Function to process a NSH script file via SHELL_FILE_HANDLE.
diff --git a/ShellPkg/Application/Shell/ShellParametersProtocol.c b/ShellPkg/Application/Shell/ShellParametersProtocol.c
index 90889a3725..a21c690518 100644
--- a/ShellPkg/Application/Shell/ShellParametersProtocol.c
+++ b/ShellPkg/Application/Shell/ShellParametersProtocol.c
@@ -626,30 +626,6 @@ FixVarName (
   return (FixFileName(Copy));
 }
 
-/**
-  Remove the unicode file tag from the begining of the file buffer since that will not be
-  used by StdIn.
-
-  @param[in]  Handle    Pointer to the handle of the file to be processed.
-
-  @retval EFI_SUCCESS   The unicode file tag has been moved successfully.
-**/
-EFI_STATUS
-RemoveFileTag(
-  IN SHELL_FILE_HANDLE *Handle
-  )
-{
-  UINTN             CharSize;
-  CHAR16            CharBuffer;
-
-  CharSize    = sizeof(CHAR16);
-  CharBuffer  = 0;
-  gEfiShellProtocol->ReadFile(*Handle, &CharSize, &CharBuffer);
-  if (CharBuffer != gUnicodeFileTag) {
-    gEfiShellProtocol->SetFilePosition(*Handle, 0);
-  }
-  return (EFI_SUCCESS);
-}
 
 /**
   Write the unicode file tag to the specified file.
diff --git a/ShellPkg/Application/Shell/ShellProtocol.c b/ShellPkg/Application/Shell/ShellProtocol.c
index f2ca2029e3..8cf924b384 100644
--- a/ShellPkg/Application/Shell/ShellProtocol.c
+++ b/ShellPkg/Application/Shell/ShellProtocol.c
@@ -98,40 +98,6 @@ InternalShellProtocolIsSimpleFileSystemPresent(
   return (FALSE);
 }
 
-/**
-  Internal worker debug helper function to print out maps as they are added.
-
-  @param[in] Mapping        string mapping that has been added
-  @param[in] DevicePath     pointer to device path that has been mapped.
-
-  @retval EFI_SUCCESS   the operation was successful.
-  @return other         an error ocurred
-
-  @sa LocateHandle
-  @sa OpenProtocol
-**/
-EFI_STATUS
-InternalShellProtocolDebugPrintMessage (
-  IN CONST CHAR16                   *Mapping,
-  IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath
-  )
-{
-  EFI_STATUS                        Status;
-  CHAR16                            *Temp;
-
-  Status = EFI_SUCCESS;
-  DEBUG_CODE_BEGIN();
-
-  if (Mapping != NULL) {
-    DEBUG((EFI_D_INFO, "Added new map item:\"%S\"\r\n", Mapping));
-  }
-  Temp = ConvertDevicePathToText(DevicePath, TRUE, TRUE);
-  DEBUG((EFI_D_INFO, "DevicePath: %S\r\n", Temp));
-  FreePool(Temp);
-
-  DEBUG_CODE_END();
-  return (Status);
-}
 
 /**
   This function creates a mapping for a device path.
@@ -1333,7 +1299,7 @@ EfiShellOpenFileByName(
   // We are opening a regular file.
   //
   DevicePath = EfiShellGetDevicePathFromFilePath(FileName);
-//  DEBUG_CODE(InternalShellProtocolDebugPrintMessage (NULL, DevicePath););
+
   if (DevicePath == NULL) {
     return (EFI_NOT_FOUND);
   }
@@ -2261,52 +2227,7 @@ EfiShellGetGuidName(
   return (EFI_SUCCESS);
 }
 
-/**
-  Updates a file name to be preceeded by the mapped drive name
-
-  @param[in] BasePath      the Mapped drive name to prepend
-  @param[in, out] Path     pointer to pointer to the file name to update.
-
-  @retval EFI_SUCCESS
-  @retval EFI_OUT_OF_RESOURCES
-**/
-EFI_STATUS
-UpdateFileName(
-  IN CONST CHAR16 *BasePath,
-  IN OUT CHAR16   **Path
-  )
-{
-  CHAR16              *Path2;
-  UINTN               Path2Size;
-
-  Path2Size = 0;
-  Path2 = NULL;
-
-  ASSERT(Path      != NULL);
-  ASSERT(*Path     != NULL);
-  ASSERT(BasePath  != NULL);
-
-  //
-  // convert a local path to an absolute path
-  //
-  if (StrStr(*Path, L":") == NULL) {
-    ASSERT((Path2 == NULL && Path2Size == 0) || (Path2 != NULL));
-    StrnCatGrow(&Path2, &Path2Size, BasePath, 0);
-    if (Path2 == NULL) {
-      return (EFI_OUT_OF_RESOURCES);
-    }
-    ASSERT((Path2 == NULL && Path2Size == 0) || (Path2 != NULL));
-    StrnCatGrow(&Path2, &Path2Size, (*Path)[0] == L'\\'?(*Path) + 1 :*Path, 0);
-    if (Path2 == NULL) {
-      return (EFI_OUT_OF_RESOURCES);
-    }
-  }
-
-  FreePool(*Path);
-  (*Path) = Path2;
 
-  return (EFI_SUCCESS);
-}
 
 /**
   If FileHandle is a directory then the function reads from FileHandle and reads in
-- 
2.18.0.windows.1