1fc3749dad
Cp command fixed to allow for copying single or multiple files to the root of the drive with destination directory \. Cd command fixed to allow for changing CWD to the root of the drive with destination directory \. signed-off-by: jcarsey reviewed-by: geekboy15a git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12392 6f19259b-4bc3-4df7-8a09-765794883524
123 lines
3.1 KiB
C
123 lines
3.1 KiB
C
/** @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 + 1) = CHAR_NULL;
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}
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return (Path);
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}
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