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ShellPkg: Refactor Split search to generic function 

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jaben Carsey <Jaben.carsey@intel.com>
Signed-off-by: Joe Peterson <joe.peterson@intel.com>
Reviewed-by: Shumin Qiu <shumin.qiu@intel.com>
Reviewed-by: Tapan Shah <tapandshah@hp.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16681 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Jaben Carsey 2015-01-30 16:28:22 +00:00 committed by jcarsey
parent a35ecb7584
commit 00534bc3e2
2 changed files with 56 additions and 31 deletions
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68
ShellPkg/Application/Shell/Shell.c
View File

@ -189,33 +189,6 @@ IsValidEnvironmentVariableName(
return TRUE;
}
/**
Find a command line contains a split operation
@param[in] CmdLine The command line to parse.
@retval A pointer to the | character in CmdLine or NULL if not present.
**/
CONST CHAR16*
EFIAPI
FindSplit(
IN CONST CHAR16 *CmdLine
)
{
CONST CHAR16 *TempSpot;
TempSpot = NULL;
if (StrStr(CmdLine, L"|") != NULL) {
for (TempSpot = CmdLine ; TempSpot != NULL && *TempSpot != CHAR_NULL ; TempSpot++) {
if (*TempSpot == L'^' && *(TempSpot+1) == L'|') {
TempSpot++;
} else if (*TempSpot == L'|') {
break;
}
}
}
return (TempSpot);
}
/**
Determine if a command line contains a split operation
@ -236,7 +209,7 @@ ContainsSplit(
FirstQuote = FindNextInstance (CmdLine, L"\"", TRUE);
SecondQuote = NULL;
TempSpot = FindSplit(CmdLine);
TempSpot = FindFirstCharacter(CmdLine, L"|", L'^');
if (FirstQuote == NULL ||
TempSpot == NULL ||
@ -259,7 +232,7 @@ ContainsSplit(
continue;
} else {
FirstQuote = FindNextInstance (SecondQuote + 1, L"\"", TRUE);
TempSpot = FindSplit(TempSpot + 1);
TempSpot = FindFirstCharacter(TempSpot + 1, L"|", L'^');
continue;
}
}
@ -1919,7 +1892,7 @@ VerifySplit(
//
// recurse to verify the next item
//
TempSpot = FindSplit(CmdLine)+1;
TempSpot = FindFirstCharacter(CmdLine, L"|", L'^') + 1;
return (VerifySplit(TempSpot));
}
@ -2921,3 +2894,38 @@ RunScriptFile (
return (Status);
}
/**
Return the pointer to the first occurance of any character from a list of characters
@param[in] String the string to parse
@param[in] CharacterList the list of character to look for
@param[in] EscapeCharacter An escape character to skip
@return the location of the first character in the string
@retval CHAR_NULL no instance of any character in CharacterList was found in String
**/
CONST CHAR16*
EFIAPI
FindFirstCharacter(
IN CONST CHAR16 *String,
IN CONST CHAR16 *CharacterList,
IN CONST CHAR16 EscapeCharacter
)
{
UINT32 WalkChar;
UINT32 WalkStr;
for (WalkStr = 0; WalkStr < StrLen(String); WalkStr++) {
if (String[WalkStr] == EscapeCharacter) {
WalkStr++;
continue;
}
for (WalkChar = 0; WalkChar < StrLen(CharacterList); WalkChar++) {
if (String[WalkStr] == CharacterList[WalkChar]) {
return (&String[WalkStr]);
}
}
}
return (String + StrLen(String));
}

19
ShellPkg/Application/Shell/Shell.h
View File

@ -2,7 +2,7 @@
function definitions for internal to shell functions.
(C) Copyright 2014, Hewlett-Packard Development Company, L.P.
Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@ -342,6 +342,23 @@ RunScriptFile (
IN EFI_SHELL_PARAMETERS_PROTOCOL *ParamProtocol
);
/**
Return the pointer to the first occurance of any character from a list of characters
@param[in] String the string to parse
@param[in] CharacterList the list of character to look for
@param[in] EscapeCharacter An escape character to skip
@return the location of the first character in the string
@retval CHAR_NULL no instance of any character in CharacterList was found in String
**/
CONST CHAR16*
EFIAPI
FindFirstCharacter(
IN CONST CHAR16 *String,
IN CONST CHAR16 *CharacterList,
IN CONST CHAR16 EscapeCharacter
);
#endif //_SHELL_INTERNAL_HEADER_