archie/tcl7.6/win/tclWinFCmd.c

955 lines
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2024-05-27 16:40:40 +02:00
/*
* tclWinFCmd.c
*
* This file implements the Windows specific portion of file manipulation
* subcommands of the "file" command.
*
* Copyright (c) 1996 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* SCCS: @(#) tclWinFCmd.c 1.12 96/10/14 14:39:16
*/
#include "tclWinInt.h"
#include "tclPort.h"
/*
* The following constants specify the type of callback when
* TraverseWinTree() calls the traverseProc()
*/
#define DOTREE_PRED 1 /* pre-order directory */
#define DOTREE_POSTD 2 /* post-order directory */
#define DOTREE_F 3 /* regular file */
/*
* Prototype for the TraverseWinTree callback function.
*/
typedef int (TraversalProc)(char *src, char *dst, DWORD attr, int type,
Tcl_DString *errorPtr);
/*
* Declarations for local procedures defined in this file:
*/
static int TraversalCopy(char *src, char *dst, DWORD attr,
int type, Tcl_DString *errorPtr);
static int TraversalDelete(char *src, char *dst, DWORD attr,
int type, Tcl_DString *errorPtr);
static int TraverseWinTree(TraversalProc *traverseProc,
Tcl_DString *sourcePtr, Tcl_DString *destPtr,
Tcl_DString *errorPtr);
/*
*---------------------------------------------------------------------------
*
* TclpRenameFile --
*
* Changes the name of an existing file or directory, from src to dst.
* If src and dst refer to the same file or directory, does nothing
* and returns success. Otherwise if dst already exists, it will be
* deleted and replaced by src subject to the following conditions:
* If src is a directory, dst may be an empty directory.
* If src is a file, dst may be a file.
* In any other situation where dst already exists, the rename will
* fail.
*
* Results:
* If the directory was successfully created, returns TCL_OK.
* Otherwise the return value is TCL_ERROR and errno is set to
* indicate the error. Some possible values for errno are:
*
* EACCES: src or dst parent directory can't be read and/or written.
* EEXIST: dst is a non-empty directory.
* EINVAL: src is a root directory or dst is a subdirectory of src.
* EISDIR: dst is a directory, but src is not.
* ENOENT: src doesn't exist. src or dst is "".
* ENOTDIR: src is a directory, but dst is not.
* EXDEV: src and dst are on different filesystems.
*
* EACCES: exists an open file already referring to src or dst.
* EACCES: src or dst specify the current working directory (NT).
* EACCES: src specifies a char device (nul:, com1:, etc.)
* EEXIST: dst specifies a char device (nul:, com1:, etc.) (NT)
* EACCES: dst specifies a char device (nul:, com1:, etc.) (95)
*
* Side effects:
* The implementation supports cross-filesystem renames of files,
* but the caller should be prepared to emulate cross-filesystem
* renames of directories if errno is EXDEV.
*
*---------------------------------------------------------------------------
*/
int
TclpRenameFile(
char *src, /* Pathname of file or dir to be renamed. */
char *dst) /* New pathname for file or directory. */
{
DWORD srcAttr, dstAttr;
/*
* Would throw an exception under NT if one of the arguments is a char
* block device.
*/
try {
if (MoveFile(src, dst) != FALSE) {
return TCL_OK;
}
} except (-1) {}
TclWinConvertError(GetLastError());
srcAttr = GetFileAttributes(src);
dstAttr = GetFileAttributes(dst);
if (srcAttr == (DWORD) -1) {
srcAttr = 0;
}
if (dstAttr == (DWORD) -1) {
dstAttr = 0;
}
if (errno == EBADF) {
errno = EACCES;
return TCL_ERROR;
}
if (errno == EACCES) {
decode:
if (srcAttr & FILE_ATTRIBUTE_DIRECTORY) {
char srcPath[MAX_PATH], dstPath[MAX_PATH];
int srcArgc, dstArgc;
char **srcArgv, **dstArgv;
char *srcRest, *dstRest;
int size;
size = GetFullPathName(src, sizeof(srcPath), srcPath, &srcRest);
if ((size == 0) || (size > sizeof(srcPath))) {
return TCL_ERROR;
}
size = GetFullPathName(dst, sizeof(dstPath), dstPath, &dstRest);
if ((size == 0) || (size > sizeof(dstPath))) {
return TCL_ERROR;
}
if (srcRest == NULL) {
srcRest = srcPath + strlen(srcPath);
}
if (strnicmp(srcPath, dstPath, srcRest - srcPath) == 0) {
/*
* Trying to move a directory into itself.
*/
errno = EINVAL;
return TCL_ERROR;
}
Tcl_SplitPath(srcPath, &srcArgc, &srcArgv);
Tcl_SplitPath(dstPath, &dstArgc, &dstArgv);
if (srcArgc == 1) {
/*
* They are trying to move a root directory. Whether
* or not it is across filesystems, this cannot be
* done.
*/
errno = EINVAL;
} else if ((srcArgc > 0) && (dstArgc > 0) &&
(stricmp(srcArgv[0], dstArgv[0]) != 0)) {
/*
* If src is a directory and dst filesystem != src
* filesystem, errno should be EXDEV. It is very
* important to get this behavior, so that the caller
* can respond to a cross filesystem rename by
* simulating it with copy and delete. The MoveFile
* system call already handles the case of moving a
* file between filesystems.
*/
errno = EXDEV;
}
ckfree((char *) srcArgv);
ckfree((char *) dstArgv);
}
/*
* Other types of access failure is that dst is a read-only
* filesystem, that an open file referred to src or dest, or that
* src or dest specified the current working directory on the
* current filesystem. EACCES is returned for those cases.
*/
} else if (errno == EEXIST) {
/*
* Reports EEXIST any time the target already exists. If it makes
* sense, remove the old file and try renaming again.
*/
if (srcAttr & FILE_ATTRIBUTE_DIRECTORY) {
if (dstAttr & FILE_ATTRIBUTE_DIRECTORY) {
/*
* Overwrite empty dst directory with src directory. The
* following call will remove an empty directory. If it
* fails, it's because it wasn't empty.
*/
if (TclpRemoveDirectory(dst, 0, NULL) == TCL_OK) {
/*
* Now that that empty directory is gone, we can try
* renaming again. If that fails, we'll put this empty
* directory back, for completeness.
*/
if (MoveFile(src, dst) != FALSE) {
return TCL_OK;
}
/*
* Some new error has occurred. Don't know what it
* could be, but report this one.
*/
TclWinConvertError(GetLastError());
CreateDirectory(dst, NULL);
SetFileAttributes(dst, dstAttr);
if (errno == EACCES) {
/*
* Decode the EACCES to a more meaningful error.
*/
goto decode;
}
}
} else { /* (dstAttr & FILE_ATTRIBUTE_DIRECTORY) == 0 */
errno = ENOTDIR;
}
} else { /* (srcAttr & FILE_ATTRIBUTE_DIRECTORY) == 0 */
if (dstAttr & FILE_ATTRIBUTE_DIRECTORY) {
errno = EISDIR;
} else {
/*
* Overwrite existing file by:
*
* 1. Rename existing file to temp name.
* 2. Rename old file to new name.
* 3. If success, delete temp file. If failure,
* put temp file back to old name.
*/
char tempName[MAX_PATH];
int result, size;
char *rest;
size = GetFullPathName(dst, sizeof(tempName), tempName, &rest);
if ((size == 0) || (size > sizeof(tempName)) || (rest == NULL)) {
return TCL_ERROR;
}
*rest = '\0';
result = TCL_ERROR;
if (GetTempFileName(tempName, "tclr", 0, tempName) != 0) {
/*
* Strictly speaking, need the following DeleteFile and
* MoveFile to be joined as an atomic operation so no
* other app comes along in the meantime and creates the
* same temp file.
*/
DeleteFile(tempName);
if (MoveFile(dst, tempName) != FALSE) {
if (MoveFile(src, dst) != FALSE) {
SetFileAttributes(tempName, FILE_ATTRIBUTE_NORMAL);
DeleteFile(tempName);
return TCL_OK;
} else {
DeleteFile(dst);
MoveFile(tempName, dst);
}
}
/*
* Can't backup dst file or move src file. Return that
* error. Could happen if an open file refers to dst.
*/
TclWinConvertError(GetLastError());
if (errno == EACCES) {
/*
* Decode the EACCES to a more meaningful error.
*/
goto decode;
}
}
return result;
}
}
}
return TCL_ERROR;
}
/*
*---------------------------------------------------------------------------
*
* TclpCopyFile --
*
* Copy a single file (not a directory). If dst already exists and
* is not a directory, it is removed.
*
* Results:
* If the file was successfully copied, returns TCL_OK. Otherwise
* the return value is TCL_ERROR and errno is set to indicate the
* error. Some possible values for errno are:
*
* EACCES: src or dst parent directory can't be read and/or written.
* EISDIR: src or dst is a directory.
* ENOENT: src doesn't exist. src or dst is "".
*
* EACCES: exists an open file already referring to dst (95).
* EACCES: src specifies a char device (nul:, com1:, etc.) (NT)
* ENOENT: src specifies a char device (nul:, com1:, etc.) (95)
*
* Side effects:
* It is not an error to copy to a char device.
*
*---------------------------------------------------------------------------
*/
int
TclpCopyFile(
char *src, /* Pathname of file to be copied. */
char *dst) /* Pathname of file to copy to. */
{
/*
* Would throw an exception under NT if one of the arguments is a char
* block device.
*/
try {
if (CopyFile(src, dst, 0) != FALSE) {
return TCL_OK;
}
} except (-1) {}
TclWinConvertError(GetLastError());
if (errno == EBADF) {
errno = EACCES;
return TCL_ERROR;
}
if (errno == EACCES) {
DWORD srcAttr, dstAttr;
srcAttr = GetFileAttributes(src);
dstAttr = GetFileAttributes(dst);
if (srcAttr != (DWORD) -1) {
if (dstAttr == (DWORD) -1) {
dstAttr = 0;
}
if ((srcAttr & FILE_ATTRIBUTE_DIRECTORY) ||
(dstAttr & FILE_ATTRIBUTE_DIRECTORY)) {
errno = EISDIR;
}
if (dstAttr & FILE_ATTRIBUTE_READONLY) {
SetFileAttributes(dst, dstAttr & ~FILE_ATTRIBUTE_READONLY);
if (CopyFile(src, dst, 0) != FALSE) {
return TCL_OK;
}
/*
* Still can't copy onto dst. Return that error, and
* restore attributes of dst.
*/
TclWinConvertError(GetLastError());
SetFileAttributes(dst, dstAttr);
}
}
}
return TCL_ERROR;
}
/*
*---------------------------------------------------------------------------
*
* TclpDeleteFile --
*
* Removes a single file (not a directory).
*
* Results:
* If the file was successfully deleted, returns TCL_OK. Otherwise
* the return value is TCL_ERROR and errno is set to indicate the
* error. Some possible values for errno are:
*
* EACCES: a parent directory can't be read and/or written.
* EISDIR: path is a directory.
* ENOENT: path doesn't exist or is "".
*
* EACCES: exists an open file already referring to path.
* EACCES: path is a char device (nul:, com1:, etc.)
*
* Side effects:
* The file is deleted, even if it is read-only.
*
*---------------------------------------------------------------------------
*/
int
TclpDeleteFile(
char *path) /* Pathname of file to be removed. */
{
DWORD attr;
if (DeleteFile(path) != FALSE) {
return TCL_OK;
}
TclWinConvertError(GetLastError());
if (errno == EACCES) {
attr = GetFileAttributes(path);
if (attr != (DWORD) -1) {
if (attr & FILE_ATTRIBUTE_DIRECTORY) {
/*
* Windows NT reports removing a directory as EACCES instead
* of EISDIR.
*/
errno = EISDIR;
} else if (attr & FILE_ATTRIBUTE_READONLY) {
SetFileAttributes(path, attr & ~FILE_ATTRIBUTE_READONLY);
if (DeleteFile(path) != FALSE) {
return TCL_OK;
}
TclWinConvertError(GetLastError());
SetFileAttributes(path, attr);
}
}
} else if (errno == ENOENT) {
attr = GetFileAttributes(path);
if (attr != (DWORD) -1) {
if (attr & FILE_ATTRIBUTE_DIRECTORY) {
/*
* Windows 95 reports removing a directory as ENOENT instead
* of EISDIR.
*/
errno = EISDIR;
}
}
} else if (errno == EINVAL) {
/*
* Windows NT reports removing a char device as EINVAL instead of
* EACCES.
*/
errno = EACCES;
}
return TCL_ERROR;
}
/*
*---------------------------------------------------------------------------
*
* TclpCreateDirectory --
*
* Creates the specified directory. All parent directories of the
* specified directory must already exist. The directory is
* automatically created with permissions so that user can access
* the new directory and create new files or subdirectories in it.
*
* Results:
* If the directory was successfully created, returns TCL_OK.
* Otherwise the return value is TCL_ERROR and errno is set to
* indicate the error. Some possible values for errno are:
*
* EACCES: a parent directory can't be read and/or written.
* EEXIST: path already exists.
* ENOENT: a parent directory doesn't exist.
*
* Side effects:
* A directory is created.
*
*---------------------------------------------------------------------------
*/
int
TclpCreateDirectory(
char *path) /* Pathname of directory to create */
{
if (CreateDirectory(path, NULL) == 0) {
TclWinConvertError(GetLastError());
return TCL_ERROR;
}
return TCL_OK;
}
/*
*---------------------------------------------------------------------------
*
* TclpCopyDirectory --
*
* Recursively copies a directory. The target directory dst must
* not already exist. Note that this function does not merge two
* directory hierarchies, even if the target directory is an an
* empty directory.
*
* Results:
* If the directory was successfully copied, returns TCL_OK.
* Otherwise the return value is TCL_ERROR, errno is set to indicate
* the error, and the pathname of the file that caused the error
* is stored in errorPtr. See TclpCreateDirectory and TclpCopyFile
* for a description of possible values for errno.
*
* Side effects:
* An exact copy of the directory hierarchy src will be created
* with the name dst. If an error occurs, the error will
* be returned immediately, and remaining files will not be
* processed.
*
*---------------------------------------------------------------------------
*/
int
TclpCopyDirectory(
char *src, /* Pathname of directory to be copied. */
char *dst, /* Pathname of target directory. */
Tcl_DString *errorPtr) /* If non-NULL, initialized DString for
* error reporting. */
{
int result;
Tcl_DString srcBuffer;
Tcl_DString dstBuffer;
Tcl_DStringInit(&srcBuffer);
Tcl_DStringInit(&dstBuffer);
Tcl_DStringAppend(&srcBuffer, src, -1);
Tcl_DStringAppend(&dstBuffer, dst, -1);
result = TraverseWinTree(TraversalCopy, &srcBuffer, &dstBuffer,
errorPtr);
Tcl_DStringFree(&srcBuffer);
Tcl_DStringFree(&dstBuffer);
return result;
}
/*
*----------------------------------------------------------------------
*
* TclpRemoveDirectory --
*
* Removes directory (and its contents, if the recursive flag is set).
*
* Results:
* If the directory was successfully removed, returns TCL_OK.
* Otherwise the return value is TCL_ERROR, errno is set to indicate
* the error, and the pathname of the file that caused the error
* is stored in errorPtr. Some possible values for errno are:
*
* EACCES: path directory can't be read and/or written.
* EEXIST: path is a non-empty directory.
* EINVAL: path is root directory or current directory.
* ENOENT: path doesn't exist or is "".
* ENOTDIR: path is not a directory.
*
* EACCES: path is a char device (nul:, com1:, etc.) (95)
* EINVAL: path is a char device (nul:, com1:, etc.) (NT)
*
* Side effects:
* Directory removed. If an error occurs, the error will be returned
* immediately, and remaining files will not be deleted.
*
*----------------------------------------------------------------------
*/
int
TclpRemoveDirectory(
char *path, /* Pathname of directory to be removed. */
int recursive, /* If non-zero, removes directories that
* are nonempty. Otherwise, will only remove
* empty directories. */
Tcl_DString *errorPtr) /* If non-NULL, initialized DString for
* error reporting. */
{
int result;
Tcl_DString buffer;
OSVERSIONINFO os;
DWORD attr;
if (RemoveDirectory(path) != FALSE) {
return TCL_OK;
}
TclWinConvertError(GetLastError());
if (errno == EACCES) {
attr = GetFileAttributes(path);
if (attr != (DWORD) -1) {
if ((attr & FILE_ATTRIBUTE_DIRECTORY) == 0) {
/*
* Windows 95 reports calling RemoveDirectory on a file as an
* EACCES, not an ENOTDIR.
*/
errno = ENOTDIR;
goto end;
}
if (attr & FILE_ATTRIBUTE_READONLY) {
attr &= ~FILE_ATTRIBUTE_READONLY;
if (SetFileAttributes(path, attr) == FALSE) {
goto end;
}
if (RemoveDirectory(path) != FALSE) {
return TCL_OK;
}
TclWinConvertError(GetLastError());
SetFileAttributes(path, attr | FILE_ATTRIBUTE_READONLY);
}
/*
* Windows 95 reports removing a non-empty directory as
* an EACCES, not an EEXIST. If the directory is not empty,
* change errno so caller knows what's going on.
*/
os.dwOSVersionInfoSize = sizeof(os);
GetVersionEx(&os);
if (os.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS) {
HANDLE handle;
WIN32_FIND_DATA data;
Tcl_DString buffer;
char *find;
int len;
Tcl_DStringInit(&buffer);
find = Tcl_DStringAppend(&buffer, path, -1);
len = Tcl_DStringLength(&buffer);
if ((len > 0) && (find[len - 1] != '\\')) {
Tcl_DStringAppend(&buffer, "\\", 1);
}
find = Tcl_DStringAppend(&buffer, "*.*", 3);
handle = FindFirstFile(find, &data);
if (handle != INVALID_HANDLE_VALUE) {
while (1) {
if ((strcmp(data.cFileName, ".") != 0)
&& (strcmp(data.cFileName, "..") != 0)) {
/*
* Found something in this directory.
*/
errno = EEXIST;
break;
}
if (FindNextFile(handle, &data) == FALSE) {
break;
}
}
FindClose(handle);
}
Tcl_DStringFree(&buffer);
}
}
}
if (errno == ENOTEMPTY) {
/*
* The caller depends on EEXIST to signify that the directory is
* not empty, not ENOTEMPTY.
*/
errno = EEXIST;
}
if ((recursive != 0) && (errno == EEXIST)) {
/*
* The directory is nonempty, but the recursive flag has been
* specified, so we recursively remove all the files in the directory.
*/
Tcl_DStringInit(&buffer);
Tcl_DStringAppend(&buffer, path, -1);
result = TraverseWinTree(TraversalDelete, &buffer, NULL, errorPtr);
Tcl_DStringFree(&buffer);
return result;
}
end:
if (errorPtr != NULL) {
Tcl_DStringAppend(errorPtr, path, -1);
}
return TCL_ERROR;
}
/*
*---------------------------------------------------------------------------
*
* TraverseWinTree --
*
* Traverse directory tree specified by sourcePtr, calling the function
* traverseProc for each file and directory encountered. If destPtr
* is non-null, each of name in the sourcePtr directory is appended to
* the directory specified by destPtr and passed as the second argument
* to traverseProc() .
*
* Results:
* Standard Tcl result.
*
* Side effects:
* None caused by TraverseWinTree, however the user specified
* traverseProc() may change state. If an error occurs, the error will
* be returned immediately, and remaining files will not be processed.
*
*---------------------------------------------------------------------------
*/
static int
TraverseWinTree(
TraversalProc *traverseProc,/* Function to call for every file and
* directory in source hierarchy. */
Tcl_DString *sourcePtr, /* Pathname of source directory to be
* traversed. */
Tcl_DString *targetPtr, /* Pathname of directory to traverse in
* parallel with source directory. */
Tcl_DString *errorPtr) /* If non-NULL, an initialized DString for
* error reporting. */
{
DWORD sourceAttr;
char *source, *target, *errfile;
int result, sourceLen, targetLen, sourceLenOriginal, targetLenOriginal;
HANDLE handle;
WIN32_FIND_DATA data;
result = TCL_OK;
source = Tcl_DStringValue(sourcePtr);
sourceLenOriginal = Tcl_DStringLength(sourcePtr);
if (targetPtr != NULL) {
target = Tcl_DStringValue(targetPtr);
targetLenOriginal = Tcl_DStringLength(targetPtr);
} else {
target = NULL;
targetLenOriginal = 0;
}
errfile = NULL;
sourceAttr = GetFileAttributes(source);
if (sourceAttr == (DWORD) -1) {
errfile = source;
goto end;
}
if ((sourceAttr & FILE_ATTRIBUTE_DIRECTORY) == 0) {
/*
* Process the regular file
*/
return (*traverseProc)(source, target, sourceAttr, DOTREE_F, errorPtr);
}
/*
* When given the pathname of the form "c:\" (one that already ends
* with a backslash), must make sure not to add another "\" to the end
* otherwise it will try to access a network drive.
*/
sourceLen = sourceLenOriginal;
if ((sourceLen > 0) && (source[sourceLen - 1] != '\\')) {
Tcl_DStringAppend(sourcePtr, "\\", 1);
sourceLen++;
}
source = Tcl_DStringAppend(sourcePtr, "*.*", 3);
handle = FindFirstFile(source, &data);
Tcl_DStringSetLength(sourcePtr, sourceLen);
if (handle == INVALID_HANDLE_VALUE) {
/*
* Can't read directory
*/
TclWinConvertError(GetLastError());
errfile = source;
goto end;
}
result = (*traverseProc)(source, target, sourceAttr, DOTREE_PRED, errorPtr);
if (result != TCL_OK) {
FindClose(handle);
return result;
}
if (targetPtr != NULL) {
targetLen = targetLenOriginal;
if ((targetLen > 0) && (target[targetLen - 1] != '\\')) {
target = Tcl_DStringAppend(targetPtr, "\\", 1);
targetLen++;
}
}
while (1) {
if ((strcmp(data.cFileName, ".") != 0)
&& (strcmp(data.cFileName, "..") != 0)) {
/*
* Append name after slash, and recurse on the file.
*/
Tcl_DStringAppend(sourcePtr, data.cFileName, -1);
if (targetPtr != NULL) {
Tcl_DStringAppend(targetPtr, data.cFileName, -1);
}
result = TraverseWinTree(traverseProc, sourcePtr, targetPtr,
errorPtr);
if (result != TCL_OK) {
break;
}
/*
* Remove name after slash.
*/
Tcl_DStringSetLength(sourcePtr, sourceLen);
if (targetPtr != NULL) {
Tcl_DStringSetLength(targetPtr, targetLen);
}
}
if (FindNextFile(handle, &data) == FALSE) {
break;
}
}
FindClose(handle);
/*
* Strip off the trailing slash we added
*/
Tcl_DStringSetLength(sourcePtr, sourceLenOriginal);
source = Tcl_DStringValue(sourcePtr);
if (targetPtr != NULL) {
Tcl_DStringSetLength(targetPtr, targetLenOriginal);
target = Tcl_DStringValue(targetPtr);
}
if (result == TCL_OK) {
/*
* Call traverseProc() on a directory after visiting all the
* files in that directory.
*/
result = (*traverseProc)(source, target, sourceAttr,
DOTREE_POSTD, errorPtr);
}
end:
if (errfile != NULL) {
TclWinConvertError(GetLastError());
if (errorPtr != NULL) {
Tcl_DStringAppend(errorPtr, errfile, -1);
}
result = TCL_ERROR;
}
return result;
}
/*
*----------------------------------------------------------------------
*
* TraversalCopy
*
* Called from TraverseUnixTree in order to execute a recursive
* copy of a directory.
*
* Results:
* Standard Tcl result.
*
* Side effects:
* Depending on the value of type, src may be copied to dst.
*
*----------------------------------------------------------------------
*/
static int
TraversalCopy(
char *src, /* Source pathname to copy. */
char *dst, /* Destination pathname of copy. */
DWORD srcAttr, /* File attributes for src. */
int type, /* Reason for call - see TraverseWinTree() */
Tcl_DString *errorPtr) /* If non-NULL, initialized DString for
* error return. */
{
switch (type) {
case DOTREE_F:
if (TclpCopyFile(src, dst) == TCL_OK) {
return TCL_OK;
}
break;
case DOTREE_PRED:
if (TclpCreateDirectory(dst) == TCL_OK) {
if (SetFileAttributes(dst, srcAttr) != FALSE) {
return TCL_OK;
}
TclWinConvertError(GetLastError());
}
break;
case DOTREE_POSTD:
return TCL_OK;
}
/*
* There shouldn't be a problem with src, because we already
* checked it to get here.
*/
if (errorPtr != NULL) {
Tcl_DStringAppend(errorPtr, dst, -1);
}
return TCL_ERROR;
}
/*
*----------------------------------------------------------------------
*
* TraversalDelete --
*
* Called by procedure TraverseWinTree for every file and
* directory that it encounters in a directory hierarchy. This
* procedure unlinks files, and removes directories after all the
* containing files have been processed.
*
* Results:
* Standard Tcl result.
*
* Side effects:
* Files or directory specified by src will be deleted. If an
* error occurs, the windows error is converted to a Posix error
* and errno is set accordingly.
*
*----------------------------------------------------------------------
*/
static int
TraversalDelete(
char *src, /* Source pathname. */
char *ignore, /* Destination pathname (not used). */
DWORD srcAttr, /* File attributes for src (not used). */
int type, /* Reason for call - see TraverseWinTree(). */
Tcl_DString *errorPtr) /* If non-NULL, initialized DString for
* error return. */
{
switch (type) {
case DOTREE_F:
if (TclpDeleteFile(src) == TCL_OK) {
return TCL_OK;
}
break;
case DOTREE_PRED:
return TCL_OK;
case DOTREE_POSTD:
if (TclpRemoveDirectory(src, 0, NULL) == TCL_OK) {
return TCL_OK;
}
break;
}
if (errorPtr != NULL) {
Tcl_DStringAppend(errorPtr, src, -1);
}
return TCL_ERROR;
}