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Maurice Ma
83 lines
2.8 KiB
C
83 lines
2.8 KiB
C
/** @file
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Functions to help parsing shell commands.
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(C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>
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Copyright (C) 2014, Red Hat, Inc.
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(C) Copyright 2013-2014 Hewlett-Packard Development Company, L.P.<BR>
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Copyright (c) 2009 - 2017, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef _PARSING_H_
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#define _PARSING_H_
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#include <PiPei.h>
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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/**
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Return the pointer to the first occurrence of any character from a list of characters.
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@param[in] String the string to parse
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@param[in] CharacterList the list of character to look for
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@param[in] EscapeCharacter An escape character to skip
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@return the location of the first character in the string
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@retval CHAR_NULL no instance of any character in CharacterList was found in String
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**/
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CONST CHAR16 *
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FindFirstCharacter (
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IN CONST CHAR16 *String,
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IN CONST CHAR16 *CharacterList,
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IN CONST CHAR16 EscapeCharacter
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);
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/**
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Cleans off leading and trailing spaces and tabs.
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@param[in] String pointer to the string to trim them off.
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**/
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EFI_STATUS
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TrimSpaces (
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IN CHAR16 **String
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);
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/**
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Return the next parameter from a command line string.
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This function moves the next parameter from Walker into TempParameter and moves
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Walker up past that parameter for recursive calling. When the final parameter
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is moved *Walker will be set to NULL;
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Temp Parameter must be large enough to hold the parameter before calling this
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function.
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This will also remove all remaining ^ characters after processing.
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@param[in, out] Walker pointer to string of command line. Adjusted to
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reminaing command line on return
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@param[in, out] TempParameter pointer to string of command line item extracted.
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@param[in] Length buffer size of TempParameter.
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@param[in] StripQuotation if TRUE then strip the quotation marks surrounding
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the parameters.
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@return EFI_INALID_PARAMETER A required parameter was NULL or pointed to a NULL or empty string.
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@return EFI_NOT_FOUND A closing " could not be found on the specified string
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**/
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EFI_STATUS
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GetNextParameter (
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IN OUT CONST CHAR16 **Walker,
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IN OUT CHAR16 **TempParameter,
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IN CONST UINTN Length,
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IN BOOLEAN StripQuotation
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);
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#endif //_PARSING_H_
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