This refactors 3 functions out of ShellCommandLib and puts them into a new library (but as 2 functions instead of 3). This allows for users outside of the shell itself to have access to these functions.
1) Remove the 3 functions out of the shell's internal library (ShellCommandLib) 2) Add a new library class (PathLib) 3) Add an instance of this class (BasePathLib) 4) Change all internal shell callers to use this new library class. signed-off-by: jcarsey reviewed-by: jljusten git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11936 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
122
ShellPkg/Library/BasePathLib/BasePathLib.c
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122
ShellPkg/Library/BasePathLib/BasePathLib.c
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/** @file
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Provides interface to path manipulation functions.
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Copyright (c) 2011, 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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#include <Base.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/PathLib.h>
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#include <Library/BaseLib.h>
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/**
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Removes the last directory or file entry in a path by changing the last
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L'\' to a CHAR_NULL.
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@param[in,out] Path The pointer to the path to modify.
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@retval FALSE Nothing was found to remove.
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@retval TRUE A directory or file was removed.
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**/
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BOOLEAN
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EFIAPI
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PathRemoveLastItem(
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IN OUT CHAR16 *Path
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)
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{
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CHAR16 *Walker;
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CHAR16 *LastSlash;
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//
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// get directory name from path... ('chop' off extra)
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//
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for ( Walker = Path, LastSlash = NULL
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; Walker != NULL && *Walker != CHAR_NULL
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; Walker++
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){
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if (*Walker == L'\\' && *(Walker + 1) != CHAR_NULL) {
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LastSlash = Walker+1;
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}
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}
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if (LastSlash != NULL) {
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*LastSlash = CHAR_NULL;
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return (TRUE);
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}
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return (FALSE);
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}
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/**
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Function to clean up paths.
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- Single periods in the path are removed.
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- Double periods in the path are removed along with a single parent directory.
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- Forward slashes L'/' are converted to backward slashes L'\'.
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This will be done inline and the existing buffer may be larger than required
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upon completion.
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@param[in] Path The pointer to the string containing the path.
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@retval NULL An error occured.
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@return Path in all other instances.
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**/
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CHAR16*
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EFIAPI
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PathCleanUpDirectories(
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IN CHAR16 *Path
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)
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{
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CHAR16 *TempString;
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UINTN TempSize;
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if (Path==NULL) {
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return(NULL);
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}
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//
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// Fix up the / vs \
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//
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for (TempString = Path ; TempString != NULL && *TempString != CHAR_NULL ; TempString++) {
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if (*TempString == L'/') {
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*TempString = L'\\';
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}
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}
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//
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// Fix up the ..
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//
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while ((TempString = StrStr(Path, L"\\..\\")) != NULL) {
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*TempString = CHAR_NULL;
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TempString += 4;
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PathRemoveLastItem(Path);
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TempSize = StrSize(TempString);
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CopyMem(Path+StrLen(Path), TempString, TempSize);
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}
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if ((TempString = StrStr(Path, L"\\..")) != NULL && *(TempString + 3) == CHAR_NULL) {
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*TempString = CHAR_NULL;
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PathRemoveLastItem(Path);
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}
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//
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// Fix up the .
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//
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while ((TempString = StrStr(Path, L"\\.\\")) != NULL) {
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*TempString = CHAR_NULL;
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TempString += 2;
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TempSize = StrSize(TempString);
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CopyMem(Path+StrLen(Path), TempString, TempSize);
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}
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if ((TempString = StrStr(Path, L"\\.")) != NULL && *(TempString + 2) == CHAR_NULL) {
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*TempString = CHAR_NULL;
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}
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return (Path);
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}
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38
ShellPkg/Library/BasePathLib/BasePathLib.inf
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38
ShellPkg/Library/BasePathLib/BasePathLib.inf
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## @file
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# Provides interface to path manipulation functions.
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#
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# Copyright (c) 2011, Intel Corporation. All rights reserved. <BR>
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#
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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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#
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##
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[Defines]
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INF_VERSION = 0x00010006
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BASE_NAME = BasePathLib
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FILE_GUID = ED244F93-B97A-4a17-83E0-A03CF2A7F7B4
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MODULE_TYPE = UEFI_DRIVER
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VERSION_STRING = 1.0
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LIBRARY_CLASS = PathLib|UEFI_APPLICATION UEFI_DRIVER
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#
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# VALID_ARCHITECTURES = IA32 X64 IPF EBC
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#
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[Sources.common]
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BasePathLib.c
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[Packages]
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MdePkg/MdePkg.dec
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ShellPkg/ShellPkg.dec
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[LibraryClasses]
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BaseMemoryLib
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BaseLib
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