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 LineDup (
  28   IN  EFI_EDITOR_LINE *Src
  29   )
  30 {
  31   EFI_EDITOR_LINE *Dest;
  32
  33   //
  34   // allocate for the line structure
  35   //
  36   Dest = AllocateZeroPool (sizeof (EFI_EDITOR_LINE));
  37   if (Dest == NULL) {
  38     return NULL;
  39   }
  40   //
  41   // allocate and set the line buffer
  42   //
  43   Dest->Buffer = CatSPrint (NULL, L"%s", Src->Buffer);
  44   if (Dest->Buffer == NULL) {
  45     FreePool (Dest);
  46     return NULL;
  47   }
  48
  49   //
  50   // set the other structure members
  51   //
  52   Dest->Signature = LINE_LIST_SIGNATURE;
  53   Dest->Size      = Src->Size;
  54   Dest->TotalSize = Dest->Size;
  55   Dest->Type      = Src->Type;
  56   Dest->Link      = Src->Link;
  57
  58   return Dest;
  59 }
  60
  61 /**
  62   Free a EFI_EDITOR_LINE structure.
  63
  64   @param Src                    The line structure to free.
  65 **/
  66 VOID
  67 LineFree (
  68   IN  EFI_EDITOR_LINE *Src
  69   )
  70 {
  71   if (Src == NULL) {
  72     return ;
  73   }
  74   //
  75   // free the line buffer and then the line structure itself
  76   //
  77   SHELL_FREE_NON_NULL (Src->Buffer);
  78   SHELL_FREE_NON_NULL (Src);
  79
  80 }
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