[mirror_edk2.git] / ShellPkg / Library / UefiShellLevel1CommandsLib / UefiShellLevel1CommandsLib.c

/** @file\r
  Main file for NULL named library for level 1 shell command functions.\r
\r
  Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR>\r
  This program and the accompanying materials\r
  are licensed and made available under the terms and conditions of the BSD License\r
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#include "UefiShellLevel1CommandsLib.h"\r
\r
STATIC CONST CHAR16 mFileName[] = L"ShellCommands";\r
EFI_HANDLE gShellLevel1HiiHandle = NULL;\r
CONST EFI_GUID gShellLevel1HiiGuid = \\r
  { \\r
    0xdec5daa4, 0x6781, 0x4820, { 0x9c, 0x63, 0xa7, 0xb0, 0xe4, 0xf1, 0xdb, 0x31 }\r
  };\r
\r
\r
/**\r
  Return the help text filename.  Only used if no HII information found.\r
\r
  @retval the filename.\r
**/\r
CONST CHAR16*\r
EFIAPI\r
ShellCommandGetManFileNameLevel1 (\r
  VOID\r
  )\r
{\r
  return (mFileName);\r
}\r
\r
/**\r
  Constructor for the Shell Level 1 Commands library.\r
\r
  Install the handlers for level 1 UEFI Shell 2.0 commands.\r
\r
  @param ImageHandle    the image handle of the process\r
  @param SystemTable    the EFI System Table pointer\r
\r
  @retval EFI_SUCCESS        the shell command handlers were installed sucessfully\r
  @retval EFI_UNSUPPORTED    the shell level required was not found.\r
**/\r
EFI_STATUS\r
EFIAPI\r
ShellLevel1CommandsLibConstructor (\r
  IN EFI_HANDLE        ImageHandle,\r
  IN EFI_SYSTEM_TABLE  *SystemTable\r
  )\r
{\r
  //\r
  // if shell level is less than 2 do nothing\r
  //\r
  if (PcdGet8(PcdShellSupportLevel) < 1) {\r
    return (EFI_UNSUPPORTED);\r
  }\r
\r
  gShellLevel1HiiHandle = HiiAddPackages (&gShellLevel1HiiGuid, gImageHandle, UefiShellLevel1CommandsLibStrings, NULL);\r
  if (gShellLevel1HiiHandle == NULL) {\r
    return (EFI_DEVICE_ERROR);\r
  }\r
\r
  //\r
  // install our shell command handlers that are always installed\r
  //\r
  ShellCommandRegisterCommandName(L"stall",  ShellCommandRunStall   , ShellCommandGetManFileNameLevel1, 1, L"", FALSE, gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_STALL) ));\r
  ShellCommandRegisterCommandName(L"for",    ShellCommandRunFor     , ShellCommandGetManFileNameLevel1, 1, L"", FALSE, gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_FOR)   ));\r
  ShellCommandRegisterCommandName(L"goto",   ShellCommandRunGoto    , ShellCommandGetManFileNameLevel1, 1, L"", FALSE, gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_GOTO)  ));\r
  ShellCommandRegisterCommandName(L"if",     ShellCommandRunIf      , ShellCommandGetManFileNameLevel1, 1, L"", FALSE, gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_IF)    ));\r
  ShellCommandRegisterCommandName(L"shift",  ShellCommandRunShift   , ShellCommandGetManFileNameLevel1, 1, L"", FALSE, gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_SHIFT) ));\r
  ShellCommandRegisterCommandName(L"exit",   ShellCommandRunExit    , ShellCommandGetManFileNameLevel1, 1, L"", TRUE , gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_EXIT)  ));\r
  ShellCommandRegisterCommandName(L"else",   ShellCommandRunElse    , ShellCommandGetManFileNameLevel1, 1, L"", FALSE, gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_ELSE)  ));\r
  ShellCommandRegisterCommandName(L"endif",  ShellCommandRunEndIf   , ShellCommandGetManFileNameLevel1, 1, L"", FALSE, gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_ENDIF) ));\r
  ShellCommandRegisterCommandName(L"endfor", ShellCommandRunEndFor  , ShellCommandGetManFileNameLevel1, 1, L"", FALSE, gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_ENDFOR)));\r
\r
  return (EFI_SUCCESS);\r
}\r
\r
/**\r
  Destructor for the library.  free any resources.\r
\r
  @param ImageHandle            The image handle of the process.\r
  @param SystemTable            The EFI System Table pointer.\r
**/\r
EFI_STATUS\r
EFIAPI\r
ShellLevel1CommandsLibDestructor (\r
  IN EFI_HANDLE        ImageHandle,\r
  IN EFI_SYSTEM_TABLE  *SystemTable\r
  )\r
{\r
  if (gShellLevel1HiiHandle != NULL) {\r
    HiiRemovePackages(gShellLevel1HiiHandle);\r
  }\r
  return (EFI_SUCCESS);\r
}\r
\r
/**\r
  Test a node to see if meets the criterion.\r
\r
  It functions so that count starts at 1 and it increases or decreases when it\r
  hits the specified tags.  when it hits zero the location has been found.\r
\r
  DecrementerTag and IncrementerTag are used to get around for/endfor and \r
  similar paired types where the entire middle should be ignored.\r
\r
  If label is used it will be used instead of the count.\r
\r
  @param[in] Function         The function to use to enumerate through the \r
                              list.  Normally GetNextNode or GetPreviousNode.\r
  @param[in] DecrementerTag   The tag to decrement the count at.\r
  @param[in] IncrementerTag   The tag to increment the count at.\r
  @param[in] Label            A label to look for.\r
  @param[in,out] ScriptFile   The pointer to the current script file structure.\r
  @param[in] MovePast         TRUE makes function return 1 past the found \r
                              location.\r
  @param[in] FindOnly         TRUE to not change the ScriptFile.\r
  @param[in] CommandNode      The pointer to the Node to test.\r
  @param[in,out] TargetCount  The pointer to the current count.\r
**/\r
BOOLEAN\r
EFIAPI\r
TestNodeForMove (\r
  IN CONST LIST_MANIP_FUNC      Function,\r
  IN CONST CHAR16               *DecrementerTag,\r
  IN CONST CHAR16               *IncrementerTag,\r
  IN CONST CHAR16               *Label OPTIONAL,\r
  IN OUT SCRIPT_FILE            *ScriptFile,\r
  IN CONST BOOLEAN              MovePast,\r
  IN CONST BOOLEAN              FindOnly,\r
  IN CONST SCRIPT_COMMAND_LIST  *CommandNode,\r
  IN OUT UINTN                  *TargetCount\r
  )\r
{\r
  BOOLEAN             Found;\r
  CHAR16              *CommandName;\r
  CHAR16              *CommandNameWalker;\r
  CHAR16              *TempLocation;\r
\r
  Found = FALSE;\r
\r
  //\r
  // get just the first part of the command line...\r
  //\r
  CommandName   = NULL;\r
  CommandName   = StrnCatGrow(&CommandName, NULL, CommandNode->Cl, 0);\r
  CommandNameWalker = CommandName;\r
  while(CommandNameWalker[0] == L' ') {\r
    CommandNameWalker++;\r
  }\r
  TempLocation  = StrStr(CommandNameWalker, L" ");\r
\r
  if (TempLocation != NULL) {\r
    *TempLocation = CHAR_NULL;\r
  }\r
\r
  //\r
  // did we find a nested item ?\r
  //\r
  if (gUnicodeCollation->StriColl(\r
      gUnicodeCollation,\r
      (CHAR16*)CommandNameWalker,\r
      (CHAR16*)IncrementerTag) == 0) {\r
    (*TargetCount)++;\r
  } else if (gUnicodeCollation->StriColl(\r
      gUnicodeCollation,\r
      (CHAR16*)CommandNameWalker,\r
      (CHAR16*)DecrementerTag) == 0) {\r
    if (*TargetCount > 0) {\r
      (*TargetCount)--;\r
    }\r
  }\r
\r
  //\r
  // did we find the matching one...\r
  //\r
  if (Label == NULL) {\r
    if (*TargetCount == 0) {\r
      Found = TRUE;\r
      if (!FindOnly) {\r
        if (MovePast) {\r
          ScriptFile->CurrentCommand = (SCRIPT_COMMAND_LIST *)(*Function)(&ScriptFile->CommandList, &CommandNode->Link);\r
        } else {\r
          ScriptFile->CurrentCommand = (SCRIPT_COMMAND_LIST *)CommandNode;\r
        }\r
      }\r
    }\r
  } else {\r
    if (gUnicodeCollation->StriColl(\r
      gUnicodeCollation,\r
      (CHAR16*)CommandNameWalker,\r
      (CHAR16*)Label) == 0\r
      && (*TargetCount) == 0) {\r
      Found = TRUE;\r
      if (!FindOnly) {\r
        //\r
        // we found the target label without loops\r
        //\r
        if (MovePast) {\r
          ScriptFile->CurrentCommand = (SCRIPT_COMMAND_LIST *)(*Function)(&ScriptFile->CommandList, &CommandNode->Link);\r
        } else {\r
          ScriptFile->CurrentCommand = (SCRIPT_COMMAND_LIST *)CommandNode;\r
        }\r
      }\r
    }\r
  }\r
\r
  //\r
  // Free the memory for this loop...\r
  //\r
  FreePool(CommandName);\r
  return (Found);\r
}\r
\r
/**\r
  Move the script pointer from 1 tag (line) to another.\r
\r
  It functions so that count starts at 1 and it increases or decreases when it\r
  hits the specified tags.  when it hits zero the location has been found.\r
\r
  DecrementerTag and IncrementerTag are used to get around for/endfor and \r
  similar paired types where the entire middle should be ignored.\r
\r
  If label is used it will be used instead of the count.\r
\r
  @param[in] Function         The function to use to enumerate through the \r
                              list.  Normally GetNextNode or GetPreviousNode.\r
  @param[in] DecrementerTag   The tag to decrement the count at.\r
  @param[in] IncrementerTag   The tag to increment the count at.\r
  @param[in] Label            A label to look for.\r
  @param[in,out] ScriptFile   The pointer to the current script file structure.\r
  @param[in] MovePast         TRUE makes function return 1 past the found \r
                              location.\r
  @param[in] FindOnly         TRUE to not change the ScriptFile.\r
  @param[in] WrapAroundScript TRUE to wrap end-to-begining or vise versa in \r
                              searching.\r
**/\r
BOOLEAN\r
EFIAPI\r
MoveToTag (\r
  IN CONST LIST_MANIP_FUNC      Function,\r
  IN CONST CHAR16               *DecrementerTag,\r
  IN CONST CHAR16               *IncrementerTag,\r
  IN CONST CHAR16               *Label OPTIONAL,\r
  IN OUT SCRIPT_FILE            *ScriptFile,\r
  IN CONST BOOLEAN              MovePast,\r
  IN CONST BOOLEAN              FindOnly,\r
  IN CONST BOOLEAN              WrapAroundScript\r
  )\r
{\r
  SCRIPT_COMMAND_LIST *CommandNode;\r
  BOOLEAN             Found;\r
  UINTN               TargetCount;\r
\r
  if (Label == NULL) {\r
    TargetCount       = 1;\r
  } else {\r
    TargetCount       = 0;\r
  }\r
\r
  if (ScriptFile == NULL) {\r
    return FALSE;\r
  }\r
\r
  for (CommandNode = (SCRIPT_COMMAND_LIST *)(*Function)(&ScriptFile->CommandList, &ScriptFile->CurrentCommand->Link), Found = FALSE\r
    ;  !IsNull(&ScriptFile->CommandList, &CommandNode->Link)&& !Found\r
    ;  CommandNode = (SCRIPT_COMMAND_LIST *)(*Function)(&ScriptFile->CommandList, &CommandNode->Link)\r
   ){\r
    Found = TestNodeForMove(\r
      Function,\r
      DecrementerTag,\r
      IncrementerTag,\r
      Label,\r
      ScriptFile,\r
      MovePast,\r
      FindOnly,\r
      CommandNode,\r
      &TargetCount);\r
  }\r
\r
  if (WrapAroundScript && !Found) {\r
    for (CommandNode = (SCRIPT_COMMAND_LIST *)GetFirstNode(&ScriptFile->CommandList), Found = FALSE\r
      ;  CommandNode != ScriptFile->CurrentCommand && !Found\r
      ;  CommandNode = (SCRIPT_COMMAND_LIST *)(*Function)(&ScriptFile->CommandList, &CommandNode->Link)\r
     ){\r
      Found = TestNodeForMove(\r
        Function,\r
        DecrementerTag,\r
        IncrementerTag,\r
        Label,\r
        ScriptFile,\r
        MovePast,\r
        FindOnly,\r
        CommandNode,\r
        &TargetCount);\r
    }\r
  }\r
  return (Found);\r
}\r
\r
Commit	Line	Data
a405b86d	1	/** @file\r
	2	Main file for NULL named library for level 1 shell command functions.\r
	3	\r
77dcec12	4	Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR>\r
a405b86d	5	This program and the accompanying materials\r
	6	are licensed and made available under the terms and conditions of the BSD License\r
	7	which accompanies this distribution. The full text of the license may be found at\r
	8	http://opensource.org/licenses/bsd-license.php\r
	9	\r
	10	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	11	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	12	\r
	13	**/\r
	14	\r
	15	#include "UefiShellLevel1CommandsLib.h"\r
	16	\r
	17	STATIC CONST CHAR16 mFileName[] = L"ShellCommands";\r
	18	EFI_HANDLE gShellLevel1HiiHandle = NULL;\r
	19	CONST EFI_GUID gShellLevel1HiiGuid = \\r
	20	{ \\r
	21	0xdec5daa4, 0x6781, 0x4820, { 0x9c, 0x63, 0xa7, 0xb0, 0xe4, 0xf1, 0xdb, 0x31 }\r
	22	};\r
	23	\r
	24	\r
77dcec12	25	/**\r
	26	Return the help text filename. Only used if no HII information found.\r
	27	\r
	28	@retval the filename.\r
	29	**/\r
a405b86d	30	CONST CHAR16*\r
	31	EFIAPI\r
	32	ShellCommandGetManFileNameLevel1 (\r
	33	VOID\r
	34	)\r
	35	{\r
	36	return (mFileName);\r
	37	}\r
	38	\r
	39	/**\r
	40	Constructor for the Shell Level 1 Commands library.\r
	41	\r
	42	Install the handlers for level 1 UEFI Shell 2.0 commands.\r
	43	\r
	44	@param ImageHandle the image handle of the process\r
	45	@param SystemTable the EFI System Table pointer\r
	46	\r
	47	@retval EFI_SUCCESS the shell command handlers were installed sucessfully\r
	48	@retval EFI_UNSUPPORTED the shell level required was not found.\r
	49	**/\r
	50	EFI_STATUS\r
	51	EFIAPI\r
	52	ShellLevel1CommandsLibConstructor (\r
	53	IN EFI_HANDLE ImageHandle,\r
	54	IN EFI_SYSTEM_TABLE *SystemTable\r
	55	)\r
	56	{\r
	57	//\r
	58	// if shell level is less than 2 do nothing\r
	59	//\r
	60	if (PcdGet8(PcdShellSupportLevel) < 1) {\r
	61	return (EFI_UNSUPPORTED);\r
	62	}\r
	63	\r
	64	gShellLevel1HiiHandle = HiiAddPackages (&gShellLevel1HiiGuid, gImageHandle, UefiShellLevel1CommandsLibStrings, NULL);\r
	65	if (gShellLevel1HiiHandle == NULL) {\r
	66	return (EFI_DEVICE_ERROR);\r
	67	}\r
	68	\r
	69	//\r
	70	// install our shell command handlers that are always installed\r
	71	//\r
77dcec12	72	ShellCommandRegisterCommandName(L"stall", ShellCommandRunStall , ShellCommandGetManFileNameLevel1, 1, L"", FALSE, gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_STALL) ));\r
a405b86d	73	ShellCommandRegisterCommandName(L"for", ShellCommandRunFor , ShellCommandGetManFileNameLevel1, 1, L"", FALSE, gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_FOR) ));\r
	74	ShellCommandRegisterCommandName(L"goto", ShellCommandRunGoto , ShellCommandGetManFileNameLevel1, 1, L"", FALSE, gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_GOTO) ));\r
	75	ShellCommandRegisterCommandName(L"if", ShellCommandRunIf , ShellCommandGetManFileNameLevel1, 1, L"", FALSE, gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_IF) ));\r
	76	ShellCommandRegisterCommandName(L"shift", ShellCommandRunShift , ShellCommandGetManFileNameLevel1, 1, L"", FALSE, gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_SHIFT) ));\r
	77	ShellCommandRegisterCommandName(L"exit", ShellCommandRunExit , ShellCommandGetManFileNameLevel1, 1, L"", TRUE , gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_EXIT) ));\r
	78	ShellCommandRegisterCommandName(L"else", ShellCommandRunElse , ShellCommandGetManFileNameLevel1, 1, L"", FALSE, gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_ELSE) ));\r
	79	ShellCommandRegisterCommandName(L"endif", ShellCommandRunEndIf , ShellCommandGetManFileNameLevel1, 1, L"", FALSE, gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_ENDIF) ));\r
	80	ShellCommandRegisterCommandName(L"endfor", ShellCommandRunEndFor , ShellCommandGetManFileNameLevel1, 1, L"", FALSE, gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_ENDFOR)));\r
	81	\r
	82	return (EFI_SUCCESS);\r
	83	}\r
	84	\r
	85	/**\r
	86	Destructor for the library. free any resources.\r
77dcec12	87	\r
	88	@param ImageHandle The image handle of the process.\r
	89	@param SystemTable The EFI System Table pointer.\r
a405b86d	90	**/\r
	91	EFI_STATUS\r
	92	EFIAPI\r
	93	ShellLevel1CommandsLibDestructor (\r
	94	IN EFI_HANDLE ImageHandle,\r
	95	IN EFI_SYSTEM_TABLE *SystemTable\r
	96	)\r
	97	{\r
	98	if (gShellLevel1HiiHandle != NULL) {\r
	99	HiiRemovePackages(gShellLevel1HiiHandle);\r
	100	}\r
	101	return (EFI_SUCCESS);\r
	102	}\r
	103	\r
77dcec12	104	/**\r
	105	Test a node to see if meets the criterion.\r
	106	\r
	107	It functions so that count starts at 1 and it increases or decreases when it\r
	108	hits the specified tags. when it hits zero the location has been found.\r
	109	\r
	110	DecrementerTag and IncrementerTag are used to get around for/endfor and \r
	111	similar paired types where the entire middle should be ignored.\r
	112	\r
	113	If label is used it will be used instead of the count.\r
	114	\r
	115	@param[in] Function The function to use to enumerate through the \r
	116	list. Normally GetNextNode or GetPreviousNode.\r
	117	@param[in] DecrementerTag The tag to decrement the count at.\r
	118	@param[in] IncrementerTag The tag to increment the count at.\r
	119	@param[in] Label A label to look for.\r
	120	@param[in,out] ScriptFile The pointer to the current script file structure.\r
	121	@param[in] MovePast TRUE makes function return 1 past the found \r
	122	location.\r
	123	@param[in] FindOnly TRUE to not change the ScriptFile.\r
	124	@param[in] CommandNode The pointer to the Node to test.\r
	125	@param[in,out] TargetCount The pointer to the current count.\r
	126	**/\r
a405b86d	127	BOOLEAN\r
	128	EFIAPI\r
	129	TestNodeForMove (\r
	130	IN CONST LIST_MANIP_FUNC Function,\r
	131	IN CONST CHAR16 *DecrementerTag,\r
	132	IN CONST CHAR16 *IncrementerTag,\r
	133	IN CONST CHAR16 *Label OPTIONAL,\r
77dcec12	134	IN OUT SCRIPT_FILE *ScriptFile,\r
a405b86d	135	IN CONST BOOLEAN MovePast,\r
	136	IN CONST BOOLEAN FindOnly,\r
	137	IN CONST SCRIPT_COMMAND_LIST *CommandNode,\r
77dcec12	138	IN OUT UINTN *TargetCount\r
a405b86d	139	)\r
	140	{\r
	141	BOOLEAN Found;\r
	142	CHAR16 *CommandName;\r
	143	CHAR16 *CommandNameWalker;\r
	144	CHAR16 *TempLocation;\r
	145	\r
	146	Found = FALSE;\r
	147	\r
	148	//\r
	149	// get just the first part of the command line...\r
	150	//\r
	151	CommandName = NULL;\r
	152	CommandName = StrnCatGrow(&CommandName, NULL, CommandNode->Cl, 0);\r
	153	CommandNameWalker = CommandName;\r
	154	while(CommandNameWalker[0] == L' ') {\r
	155	CommandNameWalker++;\r
	156	}\r
	157	TempLocation = StrStr(CommandNameWalker, L" ");\r
	158	\r
	159	if (TempLocation != NULL) {\r
	160	*TempLocation = CHAR_NULL;\r
	161	}\r
	162	\r
	163	//\r
	164	// did we find a nested item ?\r
	165	//\r
	166	if (gUnicodeCollation->StriColl(\r
	167	gUnicodeCollation,\r
	168	(CHAR16*)CommandNameWalker,\r
	169	(CHAR16*)IncrementerTag) == 0) {\r
	170	(*TargetCount)++;\r
	171	} else if (gUnicodeCollation->StriColl(\r
	172	gUnicodeCollation,\r
	173	(CHAR16*)CommandNameWalker,\r
	174	(CHAR16*)DecrementerTag) == 0) {\r
	175	if (*TargetCount > 0) {\r
	176	(*TargetCount)--;\r
	177	}\r
	178	}\r
	179	\r
	180	//\r
	181	// did we find the matching one...\r
	182	//\r
	183	if (Label == NULL) {\r
	184	if (*TargetCount == 0) {\r
	185	Found = TRUE;\r
	186	if (!FindOnly) {\r
	187	if (MovePast) {\r
	188	ScriptFile->CurrentCommand = (SCRIPT_COMMAND_LIST )(Function)(&ScriptFile->CommandList, &CommandNode->Link);\r
	189	} else {\r
	190	ScriptFile->CurrentCommand = (SCRIPT_COMMAND_LIST *)CommandNode;\r
	191	}\r
	192	}\r
	193	}\r
	194	} else {\r
	195	if (gUnicodeCollation->StriColl(\r
	196	gUnicodeCollation,\r
	197	(CHAR16*)CommandNameWalker,\r
	198	(CHAR16*)Label) == 0\r
	199	&& (*TargetCount) == 0) {\r
	200	Found = TRUE;\r
	201	if (!FindOnly) {\r
	202	//\r
203	// we found the target label without loops\r
204	//\r
205	if (MovePast) {\r
206	ScriptFile->CurrentCommand = (SCRIPT_COMMAND_LIST )(Function)(&ScriptFile->CommandList, &CommandNode->Link);\r
207	} else {\r
208	ScriptFile->CurrentCommand = (SCRIPT_COMMAND_LIST *)CommandNode;\r
209	}\r
210	}\r
211	}\r
212	}\r
213	\r
214	//\r
215	// Free the memory for this loop...\r
216	//\r
217	FreePool(CommandName);\r
218	return (Found);\r
219	}\r
220	\r
77dcec12	221	/**\r
	222	Move the script pointer from 1 tag (line) to another.\r
	223	\r
	224	It functions so that count starts at 1 and it increases or decreases when it\r
	225	hits the specified tags. when it hits zero the location has been found.\r
	226	\r
	227	DecrementerTag and IncrementerTag are used to get around for/endfor and \r
	228	similar paired types where the entire middle should be ignored.\r
	229	\r
	230	If label is used it will be used instead of the count.\r
	231	\r
	232	@param[in] Function The function to use to enumerate through the \r
	233	list. Normally GetNextNode or GetPreviousNode.\r
	234	@param[in] DecrementerTag The tag to decrement the count at.\r
	235	@param[in] IncrementerTag The tag to increment the count at.\r
	236	@param[in] Label A label to look for.\r
	237	@param[in,out] ScriptFile The pointer to the current script file structure.\r
	238	@param[in] MovePast TRUE makes function return 1 past the found \r
	239	location.\r
	240	@param[in] FindOnly TRUE to not change the ScriptFile.\r
	241	@param[in] WrapAroundScript TRUE to wrap end-to-begining or vise versa in \r
	242	searching.\r
	243	**/\r
a405b86d	244	BOOLEAN\r
	245	EFIAPI\r
	246	MoveToTag (\r
	247	IN CONST LIST_MANIP_FUNC Function,\r
	248	IN CONST CHAR16 *DecrementerTag,\r
	249	IN CONST CHAR16 *IncrementerTag,\r
	250	IN CONST CHAR16 *Label OPTIONAL,\r
77dcec12	251	IN OUT SCRIPT_FILE *ScriptFile,\r
a405b86d	252	IN CONST BOOLEAN MovePast,\r
	253	IN CONST BOOLEAN FindOnly,\r
	254	IN CONST BOOLEAN WrapAroundScript\r
	255	)\r
	256	{\r
	257	SCRIPT_COMMAND_LIST *CommandNode;\r
	258	BOOLEAN Found;\r
	259	UINTN TargetCount;\r
	260	\r
	261	if (Label == NULL) {\r
	262	TargetCount = 1;\r
	263	} else {\r
	264	TargetCount = 0;\r
	265	}\r
	266	\r
	267	if (ScriptFile == NULL) {\r
	268	return FALSE;\r
	269	}\r
	270	\r
	271	for (CommandNode = (SCRIPT_COMMAND_LIST )(Function)(&ScriptFile->CommandList, &ScriptFile->CurrentCommand->Link), Found = FALSE\r
	272	; !IsNull(&ScriptFile->CommandList, &CommandNode->Link)&& !Found\r
	273	; CommandNode = (SCRIPT_COMMAND_LIST )(Function)(&ScriptFile->CommandList, &CommandNode->Link)\r
	274	){\r
	275	Found = TestNodeForMove(\r
	276	Function,\r
	277	DecrementerTag,\r
	278	IncrementerTag,\r
	279	Label,\r
	280	ScriptFile,\r
	281	MovePast,\r
	282	FindOnly,\r
	283	CommandNode,\r
	284	&TargetCount);\r
	285	}\r
	286	\r
	287	if (WrapAroundScript && !Found) {\r
	288	for (CommandNode = (SCRIPT_COMMAND_LIST *)GetFirstNode(&ScriptFile->CommandList), Found = FALSE\r
	289	; CommandNode != ScriptFile->CurrentCommand && !Found\r
	290	; CommandNode = (SCRIPT_COMMAND_LIST )(Function)(&ScriptFile->CommandList, &CommandNode->Link)\r
	291	){\r
	292	Found = TestNodeForMove(\r
	293	Function,\r
	294	DecrementerTag,\r
	295	IncrementerTag,\r
	296	Label,\r
	297	ScriptFile,\r
	298	MovePast,\r
	299	FindOnly,\r
	300	CommandNode,\r
	301	&TargetCount);\r
	302	}\r
	303	}\r
	304	return (Found);\r
	305	}\r
	306	\r