/*
* tclFCmd.c
*
* This file implements the generic portion of file manipulation
* subcommands of the "file" command.
*
* Copyright (c) 1996-1998 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* RCS: @(#) $Id: tclFCmd.c,v 1.20.2.1 2003/06/23 10:21:16 vincentdarley Exp $
*/
#include "tclInt.h"
#include "tclPort.h"
/*
* Declarations for local procedures defined in this file:
*/
static int CopyRenameOneFile _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Obj *srcPathPtr, Tcl_Obj *destPathPtr,
int copyFlag, int force));
static Tcl_Obj * FileBasename _ANSI_ARGS_((Tcl_Interp *interp,
Tcl_Obj *pathPtr));
static int FileCopyRename _ANSI_ARGS_((Tcl_Interp *interp,
int objc, Tcl_Obj *CONST objv[], int copyFlag));
static int FileForceOption _ANSI_ARGS_((Tcl_Interp *interp,
int objc, Tcl_Obj *CONST objv[], int *forcePtr));
/*
*---------------------------------------------------------------------------
*
* TclFileRenameCmd
*
* This procedure implements the "rename" subcommand of the "file"
* command. Filename arguments need to be translated to native
* format before being passed to platform-specific code that
* implements rename functionality.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* See the user documentation.
*
*---------------------------------------------------------------------------
*/
int
TclFileRenameCmd(interp, objc, objv)
Tcl_Interp *interp; /* Interp for error reporting. */
int objc; /* Number of arguments. */
Tcl_Obj *CONST objv[]; /* Argument strings passed to Tcl_FileCmd. */
{
return FileCopyRename(interp, objc, objv, 0);
}
/*
*---------------------------------------------------------------------------
*
* TclFileCopyCmd
*
* This procedure implements the "copy" subcommand of the "file"
* command. Filename arguments need to be translated to native
* format before being passed to platform-specific code that
* implements copy functionality.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* See the user documentation.
*
*---------------------------------------------------------------------------
*/
int
TclFileCopyCmd(interp, objc, objv)
Tcl_Interp *interp; /* Used for error reporting */
int objc; /* Number of arguments. */
Tcl_Obj *CONST objv[]; /* Argument strings passed to Tcl_FileCmd. */
{
return FileCopyRename(interp, objc, objv, 1);
}
/*
*---------------------------------------------------------------------------
*
* FileCopyRename --
*
* Performs the work of TclFileRenameCmd and TclFileCopyCmd.
* See comments for those procedures.
*
* Results:
* See above.
*
* Side effects:
* See above.
*
*---------------------------------------------------------------------------
*/
static int
FileCopyRename(interp, objc, objv, copyFlag)
Tcl_Interp *interp; /* Used for error reporting. */
int objc; /* Number of arguments. */
Tcl_Obj *CONST objv[]; /* Argument strings passed to Tcl_FileCmd. */
int copyFlag; /* If non-zero, copy source(s). Otherwise,
* rename them. */
{
int i, result, force;
Tcl_StatBuf statBuf;
Tcl_Obj *target;
i = FileForceOption(interp, objc - 2, objv + 2, &force);
if (i < 0) {
return TCL_ERROR;
}
i += 2;
if ((objc - i) < 2) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
Tcl_GetString(objv[0]), " ", Tcl_GetString(objv[1]),
" ?options? source ?source ...? target\"",
(char *) NULL);
return TCL_ERROR;
}
/*
* If target doesn't exist or isn't a directory, try the copy/rename.
* More than 2 arguments is only valid if the target is an existing
* directory.
*/
target = objv[objc - 1];
if (Tcl_FSConvertToPathType(interp, target) != TCL_OK) {
return TCL_ERROR;
}
result = TCL_OK;
/*
* Call Tcl_FSStat() so that if target is a symlink that points to a
* directory we will put the sources in that directory instead of
* overwriting the symlink.
*/
if ((Tcl_FSStat(target, &statBuf) != 0) || !S_ISDIR(statBuf.st_mode)) {
if ((objc - i) > 2) {
errno = ENOTDIR;
Tcl_PosixError(interp);
Tcl_AppendResult(interp, "error ",
((copyFlag) ? "copying" : "renaming"), ": target \"",
Tcl_GetString(target), "\" is not a directory",
(char *) NULL);
result = TCL_ERROR;
} else {
/*
* Even though already have target == translated(objv[i+1]),
* pass the original argument down, so if there's an error, the
* error message will reflect the original arguments.
*/
result = CopyRenameOneFile(interp, objv[i], objv[i + 1], copyFlag,
force);
}
return result;
}
/*
* Move each source file into target directory. Extract the basename
* from each source, and append it to the end of the target path.
*/
for ( ; i < objc - 1; i++) {
Tcl_Obj *jargv[2];
Tcl_Obj *source, *newFileName;
Tcl_Obj *temp;
source = FileBasename(interp, objv[i]);
if (source == NULL) {
result = TCL_ERROR;
break;
}
jargv[0] = objv[objc - 1];
jargv[1] = source;
temp = Tcl_NewListObj(2, jargv);
newFileName = Tcl_FSJoinPath(temp, -1);
Tcl_IncrRefCount(newFileName);
result = CopyRenameOneFile(interp, objv[i], newFileName, copyFlag,
force);
Tcl_DecrRefCount(newFileName);
Tcl_DecrRefCount(temp);
Tcl_DecrRefCount(source);
if (result == TCL_ERROR) {
break;
}
}
return result;
}
/*
*---------------------------------------------------------------------------
*
* TclFileMakeDirsCmd
*
* This procedure implements the "mkdir" subcommand of the "file"
* command. Filename arguments need to be translated to native
* format before being passed to platform-specific code that
* implements mkdir functionality.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* See the user documentation.
*
*----------------------------------------------------------------------
*/
int
TclFileMakeDirsCmd(interp, objc, objv)
Tcl_Interp *interp; /* Used for error reporting. */
int objc; /* Number of arguments */
Tcl_Obj *CONST objv[]; /* Argument strings passed to Tcl_FileCmd. */
{
Tcl_Obj *errfile;
int result, i, j, pobjc;
Tcl_Obj *split = NULL;
Tcl_Obj *target = NULL;
Tcl_StatBuf statBuf;
errfile = NULL;
result = TCL_OK;
for (i = 2; i < objc; i++) {
if (Tcl_FSConvertToPathType(interp, objv[i]) != TCL_OK) {
result = TCL_ERROR;
break;
}
split = Tcl_FSSplitPath(objv[i],&pobjc);
if (pobjc == 0) {
errno = ENOENT;
errfile = objv[i];
break;
}
for (j = 0; j < pobjc; j++) {
target = Tcl_FSJoinPath(split, j + 1);
Tcl_IncrRefCount(target);
/*
* Call Tcl_FSStat() so that if target is a symlink that
* points to a directory we will create subdirectories in
* that directory.
*/
if (Tcl_FSStat(target, &statBuf) == 0) {
if (!S_ISDIR(statBuf.st_mode)) {
errno = EEXIST;
errfile = target;
goto done;
}
} else if ((errno != ENOENT)
|| (Tcl_FSCreateDirectory(target) != TCL_OK)) {
errfile = target;
goto done;
}
/* Forget about this sub-path */
Tcl_DecrRefCount(target);
target = NULL;
}
Tcl_DecrRefCount(split);
split = NULL;
}
done:
if (errfile != NULL) {
Tcl_AppendResult(interp, "can't create directory \"",
Tcl_GetString(errfile), "\": ", Tcl_PosixError(interp),
(char *) NULL);
result = TCL_ERROR;
}
if (split != NULL) {
Tcl_DecrRefCount(split);
}
if (target != NULL) {
Tcl_DecrRefCount(target);
}
return result;
}
/*
*----------------------------------------------------------------------
*
* TclFileDeleteCmd
*
* This procedure implements the "delete" subcommand of the "file"
* command.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* See the user documentation.
*
*----------------------------------------------------------------------
*/
int
TclFileDeleteCmd(interp, objc, objv)
Tcl_Interp *interp; /* Used for error reporting */
int objc; /* Number of arguments */
Tcl_Obj *CONST objv[]; /* Argument strings passed to Tcl_FileCmd. */
{
int i, force, result;
Tcl_Obj *errfile;
Tcl_Obj *errorBuffer = NULL;
i = FileForceOption(interp, objc - 2, objv + 2, &force);
if (i < 0) {
return TCL_ERROR;
}
i += 2;
if ((objc - i) < 1) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
Tcl_GetString(objv[0]), " ", Tcl_GetString(objv[1]),
" ?options? file ?file ...?\"", (char *) NULL);
return TCL_ERROR;
}
errfile = NULL;
result = TCL_OK;
for ( ; i < objc; i++) {
Tcl_StatBuf statBuf;
errfile = objv[i];
if (Tcl_FSConvertToPathType(interp, objv[i]) != TCL_OK) {
result = TCL_ERROR;
goto done;
}
/*
* Call lstat() to get info so can delete symbolic link itself.
*/
if (Tcl_FSLstat(objv[i], &statBuf) != 0) {
/*
* Trying to delete a file that does not exist is not
* considered an error, just a no-op
*/
if (errno != ENOENT) {
result = TCL_ERROR;
}
} else if (S_ISDIR(statBuf.st_mode)) {
/*
* We own a reference count on errorBuffer, if it was set
* as a result of this call.
*/
result = Tcl_FSRemoveDirectory(objv[i], force, &errorBuffer);
if (result != TCL_OK) {
if ((force == 0) && (errno == EEXIST)) {
Tcl_AppendResult(interp, "error deleting \"",
Tcl_GetString(objv[i]),
"\": directory not empty", (char *) NULL);
Tcl_PosixError(interp);
goto done;
}
/*
* If possible, use the untranslated name for the file.
*/
errfile = errorBuffer;
/* FS supposed to check between translated objv and errfile */
if (Tcl_FSEqualPaths(objv[i], errfile)) {
errfile = objv[i];
}
}
} else {
result = Tcl_FSDeleteFile(objv[i]);
}
if (result != TCL_OK) {
result = TCL_ERROR;
/*
* It is important that we break on error, otherwise we
* might end up owning reference counts on numerous
* errorBuffers.
*/
break;
}
}
if (result != TCL_OK) {
if (errfile == NULL) {
/*
* We try to accomodate poor error results from our
* Tcl_FS calls
*/
Tcl_AppendResult(interp, "error deleting unknown file: ",
Tcl_PosixError(interp), (char *) NULL);
} else {
Tcl_AppendResult(interp, "error deleting \"",
Tcl_GetString(errfile), "\": ",
Tcl_PosixError(interp), (char *) NULL);
}
}
done:
if (errorBuffer != NULL) {
Tcl_DecrRefCount(errorBuffer);
}
return result;
}
/*
*---------------------------------------------------------------------------
*
* CopyRenameOneFile
*
* Copies or renames specified source file or directory hierarchy
* to the specified target.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* Target is overwritten if the force flag is set. Attempting to
* copy/rename a file onto a directory or a directory onto a file
* will always result in an error.
*
*----------------------------------------------------------------------
*/
static int
CopyRenameOneFile(interp, source, target, copyFlag, force)
Tcl_Interp *interp; /* Used for error reporting. */
Tcl_Obj *source; /* Pathname of file to copy. May need to
* be translated. */
Tcl_Obj *target; /* Pathname of file to create/overwrite.
* May need to be translated. */
int copyFlag; /* If non-zero, copy files. Otherwise,
* rename them. */
int force; /* If non-zero, overwrite target file if it
* exists. Otherwise, error if target already
* exists. */
{
int result;
Tcl_Obj *errfile, *errorBuffer;
/* If source is a link, then this is the real file/directory */
Tcl_Obj *actualSource = NULL;
Tcl_StatBuf sourceStatBuf, targetStatBuf;
if (Tcl_FSConvertToPathType(interp, source) != TCL_OK) {
return TCL_ERROR;
}
if (Tcl_FSConvertToPathType(interp, target) != TCL_OK) {
return TCL_ERROR;
}
errfile = NULL;
errorBuffer = NULL;
result = TCL_ERROR;
/*
* We want to copy/rename links and not the files they point to, so we
* use lstat(). If target is a link, we also want to replace the
* link and not the file it points to, so we also use lstat() on the
* target.
*/
if (Tcl_FSLstat(source, &sourceStatBuf) != 0) {
errfile = source;
goto done;
}
if (Tcl_FSLstat(target, &targetStatBuf) != 0) {
if (errno != ENOENT) {
errfile = target;
goto done;
}
} else {
if (force == 0) {
errno = EEXIST;
errfile = target;
goto done;
}
/*
* Prevent copying or renaming a file onto itself. Under Windows,
* stat always returns 0 for st_ino. However, the Windows-specific
* code knows how to deal with copying or renaming a file on top of
* itself. It might be a good idea to write a stat that worked.
*/
if ((sourceStatBuf.st_ino != 0) && (targetStatBuf.st_ino != 0)) {
if ((sourceStatBuf.st_ino == targetStatBuf.st_ino) &&
(sourceStatBuf.st_dev == targetStatBuf.st_dev)) {
result = TCL_OK;
goto done;
}
}
/*
* Prevent copying/renaming a file onto a directory and
* vice-versa. This is a policy decision based on the fact that
* existing implementations of copy and rename on all platforms
* also prevent this.
*/
if (S_ISDIR(sourceStatBuf.st_mode)
&& !S_ISDIR(targetStatBuf.st_mode)) {
errno = EISDIR;
Tcl_AppendResult(interp, "can't overwrite file \"",
Tcl_GetString(target), "\" with directory \"",
Tcl_GetString(source), "\"", (char *) NULL);
goto done;
}
if (!S_ISDIR(sourceStatBuf.st_mode)
&& S_ISDIR(targetStatBuf.st_mode)) {
errno = EISDIR;
Tcl_AppendResult(interp, "can't overwrite directory \"",
Tcl_GetString(target), "\" with file \"",
Tcl_GetString(source), "\"", (char *) NULL);
goto done;
}
}
if (copyFlag == 0) {
result = Tcl_FSRenameFile(source, target);
if (result == TCL_OK) {
goto done;
}
if (errno == EINVAL) {
Tcl_AppendResult(interp, "error renaming \"",
Tcl_GetString(source), "\" to \"",
Tcl_GetString(target), "\": trying to rename a volume or ",
"move a directory into itself", (char *) NULL);
goto done;
} else if (errno != EXDEV) {
errfile = target;
goto done;
}
/*
* The rename failed because the move was across file systems.
* Fall through to copy file and then remove original. Note that
* the low-level Tcl_FSRenameFileProc in the filesystem is allowed
* to implement cross-filesystem moves itself, if it desires.
*/
}
actualSource = source;
Tcl_IncrRefCount(actualSource);
#if 0
#ifdef S_ISLNK
/*
* To add a flag to make 'copy' copy links instead of files, we could
* add a condition to ignore this 'if' here.
*/
if (copyFlag && S_ISLNK(sourceStatBuf.st_mode)) {
/*
* We want to copy files not links. Therefore we must follow the
* link. There are two purposes to this 'stat' call here. First
* we want to know if the linked-file/dir actually exists, and
* second, in the block of code which follows, some 20 lines
* down, we want to check if the thing is a file or directory.
*/
if (Tcl_FSStat(source, &sourceStatBuf) != 0) {
/* Actual file doesn't exist */
Tcl_AppendResult(interp,
"error copying \"", Tcl_GetString(source),
"\": the target of this link doesn't exist",
(char *) NULL);
goto done;
} else {
int counter = 0;
while (1) {
Tcl_Obj *path = Tcl_FSLink(actualSource, NULL, 0);
if (path == NULL) {
break;
}
Tcl_DecrRefCount(actualSource);
actualSource = path;
counter++;
/* Arbitrary limit of 20 links to follow */
if (counter > 20) {
/* Too many links */
Tcl_SetErrno(EMLINK);
errfile = source;
goto done;
}
}
/* Now 'actualSource' is the correct file */
}
}
#endif
#endif
if (S_ISDIR(sourceStatBuf.st_mode)) {
result = Tcl_FSCopyDirectory(actualSource, target, &errorBuffer);
if (result != TCL_OK) {
if (errno == EXDEV) {
/*
* The copy failed because we're trying to do a
* cross-filesystem copy. We do this through our Tcl
* library.
*/
Tcl_SavedResult savedResult;
Tcl_Obj *copyCommand = Tcl_NewListObj(0,NULL);
Tcl_IncrRefCount(copyCommand);
Tcl_ListObjAppendElement(interp, copyCommand,
Tcl_NewStringObj("::tcl::CopyDirectory",-1));
if (copyFlag) {
Tcl_ListObjAppendElement(interp, copyCommand,
Tcl_NewStringObj("copying",-1));
} else {
Tcl_ListObjAppendElement(interp, copyCommand,
Tcl_NewStringObj("renaming",-1));
}
Tcl_ListObjAppendElement(interp, copyCommand, source);
Tcl_ListObjAppendElement(interp, copyCommand, target);
Tcl_SaveResult(interp, &savedResult);
result = Tcl_EvalObjEx(interp, copyCommand,
TCL_EVAL_GLOBAL | TCL_EVAL_DIRECT);
Tcl_DecrRefCount(copyCommand);
if (result != TCL_OK) {
/*
* There was an error in the Tcl-level copy.
* We will pass on the Tcl error message and
* can ensure this by setting errfile to NULL
*/
Tcl_DiscardResult(&savedResult);
errfile = NULL;
} else {
/* The copy was successful */
Tcl_RestoreResult(interp, &savedResult);
}
} else {
errfile = errorBuffer;
if (Tcl_FSEqualPaths(errfile, source)) {
errfile = source;
} else if (Tcl_FSEqualPaths(errfile, target)) {
errfile = target;
}
}
}
} else {
result = Tcl_FSCopyFile(actualSource, target);
if ((result != TCL_OK) && (errno == EXDEV)) {
result = TclCrossFilesystemCopy(interp, source, target);
}
if (result != TCL_OK) {
/*
* We could examine 'errno' to double-check if the problem
* was with the target, but we checked the source above,
* so it should be quite clear
*/
errfile = target;
/*
* We now need to reset the result, because the above call,
* if it failed, may have put an error message in place.
* (Ideally we would prefer not to pass an interpreter in
* above, but the channel IO code used by
* TclCrossFilesystemCopy currently requires one)
*/
Tcl_ResetResult(interp);
}
}
if ((copyFlag == 0) && (result == TCL_OK)) {
if (S_ISDIR(sourceStatBuf.st_mode)) {
result = Tcl_FSRemoveDirectory(source, 1, &errorBuffer);
if (result != TCL_OK) {
if (Tcl_FSEqualPaths(errfile, source) == 0) {
errfile = source;
}
}
} else {
result = Tcl_FSDeleteFile(source);
if (result != TCL_OK) {
errfile = source;
}
}
if (result != TCL_OK) {
Tcl_AppendResult(interp, "can't unlink \"",
Tcl_GetString(errfile), "\": ",
Tcl_PosixError(interp), (char *) NULL);
errfile = NULL;
}
}
done:
if (errfile != NULL) {
Tcl_AppendResult(interp,
((copyFlag) ? "error copying \"" : "error renaming \""),
Tcl_GetString(source), (char *) NULL);
if (errfile != source) {
Tcl_AppendResult(interp, "\" to \"", Tcl_GetString(target),
(char *) NULL);
if (errfile != target) {
Tcl_AppendResult(interp, "\": \"", Tcl_GetString(errfile),
(char *) NULL);
}
}
Tcl_AppendResult(interp, "\": ", Tcl_PosixError(interp),
(char *) NULL);
}
if (errorBuffer != NULL) {
Tcl_DecrRefCount(errorBuffer);
}
if (actualSource != NULL) {
Tcl_DecrRefCount(actualSource);
}
return result;
}
/*
*---------------------------------------------------------------------------
*
* FileForceOption --
*
* Helps parse command line options for file commands that take
* the "-force" and "--" options.
*
* Results:
* The return value is how many arguments from argv were consumed
* by this function, or -1 if there was an error parsing the
* options. If an error occurred, an error message is left in the
* interp's result.
*
* Side effects:
* None.
*
*---------------------------------------------------------------------------
*/
static int
FileForceOption(interp, objc, objv, forcePtr)
Tcl_Interp *interp; /* Interp, for error return. */
int objc; /* Number of arguments. */
Tcl_Obj *CONST objv[]; /* Argument strings. First command line
* option, if it exists, begins at 0. */
int *forcePtr; /* If the "-force" was specified, *forcePtr
* is filled with 1, otherwise with 0. */
{
int force, i;
force = 0;
for (i = 0; i < objc; i++) {
if (Tcl_GetString(objv[i])[0] != '-') {
break;
}
if (strcmp(Tcl_GetString(objv[i]), "-force") == 0) {
force = 1;
} else if (strcmp(Tcl_GetString(objv[i]), "--") == 0) {
i++;
break;
} else {
Tcl_AppendResult(interp, "bad option \"", Tcl_GetString(objv[i]),
"\": should be -force or --", (char *)NULL);
return -1;
}
}
*forcePtr = force;
return i;
}
/*
*---------------------------------------------------------------------------
*
* FileBasename --
*
* Given a path in either tcl format (with / separators), or in the
* platform-specific format for the current platform, return all the
* characters in the path after the last directory separator. But,
* if path is the root directory, returns no characters.
*
* Results:
* Returns the string object that represents the basename. If there
* is an error, an error message is left in interp, and NULL is
* returned.
*
* Side effects:
* None.
*
*---------------------------------------------------------------------------
*/
static Tcl_Obj *
FileBasename(interp, pathPtr)
Tcl_Interp *interp; /* Interp, for error return. */
Tcl_Obj *pathPtr; /* Path whose basename to extract. */
{
int objc;
Tcl_Obj *splitPtr;
Tcl_Obj *resultPtr = NULL;
splitPtr = Tcl_FSSplitPath(pathPtr, &objc);
if (objc != 0) {
if ((objc == 1) && (*Tcl_GetString(pathPtr) == '~')) {
Tcl_DecrRefCount(splitPtr);
if (Tcl_FSConvertToPathType(interp, pathPtr) != TCL_OK) {
return NULL;
}
splitPtr = Tcl_FSSplitPath(pathPtr, &objc);
}
/*
* Return the last component, unless it is the only component, and it
* is the root of an absolute path.
*/
if (objc > 0) {
Tcl_ListObjIndex(NULL, splitPtr, objc-1, &resultPtr);
if ((objc == 1) &&
(Tcl_FSGetPathType(resultPtr) != TCL_PATH_RELATIVE)) {
resultPtr = NULL;
}
}
}
if (resultPtr == NULL) {
resultPtr = Tcl_NewObj();
}
Tcl_IncrRefCount(resultPtr);
Tcl_DecrRefCount(splitPtr);
return resultPtr;
}
/*
*----------------------------------------------------------------------
*
* TclFileAttrsCmd --
*
* Sets or gets the platform-specific attributes of a file. The
* objc-objv points to the file name with the rest of the command
* line following. This routine uses platform-specific tables of
* option strings and callbacks. The callback to get the
* attributes take three parameters:
* Tcl_Interp *interp; The interp to report errors with.
* Since this is an object-based API,
* the object form of the result should
* be used.
* CONST char *fileName; This is extracted using
* Tcl_TranslateFileName.
* TclObj **attrObjPtrPtr; A new object to hold the attribute
* is allocated and put here.
* The first two parameters of the callback used to write out the
* attributes are the same. The third parameter is:
* CONST *attrObjPtr; A pointer to the object that has
* the new attribute.
* They both return standard TCL errors; if the routine to get
* an attribute fails, no object is allocated and *attrObjPtrPtr
* is unchanged.
*
* Results:
* Standard TCL error.
*
* Side effects:
* May set file attributes for the file name.
*
*----------------------------------------------------------------------
*/
int
TclFileAttrsCmd(interp, objc, objv)
Tcl_Interp *interp; /* The interpreter for error reporting. */
int objc; /* Number of command line arguments. */
Tcl_Obj *CONST objv[]; /* The command line objects. */
{
int result;
CONST char ** attributeStrings;
Tcl_Obj* objStrings = NULL;
int numObjStrings = -1;
Tcl_Obj *filePtr;
if (objc < 3) {
Tcl_WrongNumArgs(interp, 2, objv,
"name ?option? ?value? ?option value ...?");
return TCL_ERROR;
}
filePtr = objv[2];
if (Tcl_FSConvertToPathType(interp, filePtr) != TCL_OK) {
return TCL_ERROR;
}
objc -= 3;
objv += 3;
result = TCL_ERROR;
Tcl_SetErrno(0);
attributeStrings = Tcl_FSFileAttrStrings(filePtr, &objStrings);
if (attributeStrings == NULL) {
int index;
Tcl_Obj *objPtr;
if (objStrings == NULL) {
if (Tcl_GetErrno() != 0) {
/*
* There was an error, probably that the filePtr is
* not accepted by any filesystem
*/
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
"could not read \"", Tcl_GetString(filePtr),
"\": ", Tcl_PosixError(interp),
(char *) NULL);
return TCL_ERROR;
}
goto end;
}
/* We own the object now */
Tcl_IncrRefCount(objStrings);
/* Use objStrings as a list object */
if (Tcl_ListObjLength(interp, objStrings, &numObjStrings) != TCL_OK) {
goto end;
}
attributeStrings = (CONST char **)
ckalloc ((1+numObjStrings) * sizeof(char*));
for (index = 0; index < numObjStrings; index++) {
Tcl_ListObjIndex(interp, objStrings, index, &objPtr);
attributeStrings[index] = Tcl_GetString(objPtr);
}
attributeStrings[index] = NULL;
}
if (objc == 0) {
/*
* Get all attributes.
*/
int index;
Tcl_Obj *listPtr;
listPtr = Tcl_NewListObj(0, NULL);
for (index = 0; attributeStrings[index] != NULL; index++) {
Tcl_Obj *objPtr = Tcl_NewStringObj(attributeStrings[index], -1);
Tcl_ListObjAppendElement(interp, listPtr, objPtr);
/* We now forget about objPtr, it is in the list */
objPtr = NULL;
if (Tcl_FSFileAttrsGet(interp, index, filePtr,
&objPtr) != TCL_OK) {
Tcl_DecrRefCount(listPtr);
goto end;
}
Tcl_ListObjAppendElement(interp, listPtr, objPtr);
}
Tcl_SetObjResult(interp, listPtr);
} else if (objc == 1) {
/*
* Get one attribute.
*/
int index;
Tcl_Obj *objPtr = NULL;
if (numObjStrings == 0) {
Tcl_AppendResult(interp, "bad option \"",
Tcl_GetString(objv[0]), "\", there are no file attributes"
" in this filesystem.", (char *) NULL);
goto end;
}
if (Tcl_GetIndexFromObj(interp, objv[0], attributeStrings,
"option", 0, &index) != TCL_OK) {
goto end;
}
if (Tcl_FSFileAttrsGet(interp, index, filePtr,
&objPtr) != TCL_OK) {
goto end;
}
Tcl_SetObjResult(interp, objPtr);
} else {
/*
* Set option/value pairs.
*/
int i, index;
if (numObjStrings == 0) {
Tcl_AppendResult(interp, "bad option \"",
Tcl_GetString(objv[0]), "\", there are no file attributes"
" in this filesystem.", (char *) NULL);
goto end;
}
for (i = 0; i < objc ; i += 2) {
if (Tcl_GetIndexFromObj(interp, objv[i], attributeStrings,
"option", 0, &index) != TCL_OK) {
goto end;
}
if (i + 1 == objc) {
Tcl_AppendResult(interp, "value for \"",
Tcl_GetString(objv[i]), "\" missing",
(char *) NULL);
goto end;
}
if (Tcl_FSFileAttrsSet(interp, index, filePtr,
objv[i + 1]) != TCL_OK) {
goto end;
}
}
}
result = TCL_OK;
end:
if (numObjStrings != -1) {
/* Free up the array we allocated */
ckfree((char*)attributeStrings);
/*
* We don't need this object that was passed to us
* any more.
*/
if (objStrings != NULL) {
Tcl_DecrRefCount(objStrings);
}
}
return result;
}