ShellPkg/Library/UefiShellDebug1CommandsLib/Edit/Misc.c

   1 /** @file
   2   Implementation of various string and line routines.
   3
   4   Copyright (c) 2005 - 2011, Intel Corporation. All rights reserved. <BR>
   5   This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #include "TextEditor.h"
  16 #include "Misc.h"
  17
  18 /**
  19   Duplicate a EFI_EDITOR_LINE structure.
  20
  21   @param Src                    The line structure to copy from.
  22
  23   @retval NULL                  A memory allocation failed.
  24   @return                       a pointer to the newly allcoated line.
  25 **/
  26 EFI_EDITOR_LINE *
  27 EFIAPI
  28 LineDup (
  29   IN  EFI_EDITOR_LINE *Src
  30   )
  31 {
  32   EFI_EDITOR_LINE *Dest;
  33
  34   //
  35   // allocate for the line structure
  36   //
  37   Dest = AllocateZeroPool (sizeof (EFI_EDITOR_LINE));
  38   if (Dest == NULL) {
  39     return NULL;
  40   }
  41   //
  42   // allocate and set the line buffer
  43   //
  44   Dest->Buffer = CatSPrint (NULL, L"%s", Src->Buffer);
  45   if (Dest->Buffer == NULL) {
  46     FreePool (Dest);
  47     return NULL;
  48   }
  49
  50   //
  51   // set the other structure members
  52   //
  53   Dest->Signature = LINE_LIST_SIGNATURE;
  54   Dest->Size      = Src->Size;
  55   Dest->TotalSize = Dest->Size;
  56   Dest->Type      = Src->Type;
  57   Dest->Link      = Src->Link;
  58
  59   return Dest;
  60 }
  61
  62 /**
  63   Free a EFI_EDITOR_LINE structure.
  64
  65   @param Src                    The line structure to free.
  66 **/
  67 VOID
  68 EFIAPI
  69 LineFree (
  70   IN  EFI_EDITOR_LINE *Src
  71   )
  72 {
  73   if (Src == NULL) {
  74     return ;
  75   }
  76   //
  77   // free the line buffer and then the line structure itself
  78   //
  79   SHELL_FREE_NON_NULL (Src->Buffer);
  80   SHELL_FREE_NON_NULL (Src);
  81
  82 }
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