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-rw-r--r--generic/tclFCmd.c583
1 files changed, 483 insertions, 100 deletions
diff --git a/generic/tclFCmd.c b/generic/tclFCmd.c
index 8ff6e39..33c1496 100644
--- a/generic/tclFCmd.c
+++ b/generic/tclFCmd.c
@@ -8,11 +8,10 @@
*
* 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 1.51 2010/02/24 10:32:17 dkf Exp $
*/
#include "tclInt.h"
+#include "tclFileSystem.h"
/*
* Declarations for local functions defined in this file:
@@ -48,6 +47,7 @@ static int FileForceOption(Tcl_Interp *interp,
int
TclFileRenameCmd(
+ ClientData clientData, /* Unused */
Tcl_Interp *interp, /* Interp for error reporting or recursive
* calls in the case of a tricky rename. */
int objc, /* Number of arguments. */
@@ -76,6 +76,7 @@ TclFileRenameCmd(
int
TclFileCopyCmd(
+ ClientData clientData, /* Unused */
Tcl_Interp *interp, /* Used for error reporting or recursive calls
* in the case of a tricky copy. */
int objc, /* Number of arguments. */
@@ -113,22 +114,20 @@ FileCopyRename(
Tcl_StatBuf statBuf;
Tcl_Obj *target;
- i = FileForceOption(interp, objc - 2, objv + 2, &force);
+ i = FileForceOption(interp, objc - 1, objv + 1, &force);
if (i < 0) {
return TCL_ERROR;
}
- i += 2;
+ i++;
if ((objc - i) < 2) {
- Tcl_AppendResult(interp, "wrong # args: should be \"",
- TclGetString(objv[0]), " ", TclGetString(objv[1]),
- " ?-option value ...? source ?source ...? target\"", NULL);
+ Tcl_WrongNumArgs(interp, 1, objv,
+ "?-option value ...? source ?source ...? target");
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.
+ * 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];
@@ -148,9 +147,9 @@ FileCopyRename(
if ((objc - i) > 2) {
errno = ENOTDIR;
Tcl_PosixError(interp);
- Tcl_AppendResult(interp, "error ",
- (copyFlag ? "copying" : "renaming"), ": target \"",
- TclGetString(target), "\" is not a directory", NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "error %s: target \"%s\" is not a directory",
+ (copyFlag?"copying":"renaming"), TclGetString(target)));
result = TCL_ERROR;
} else {
/*
@@ -173,7 +172,6 @@ FileCopyRename(
for ( ; i<objc-1 ; i++) {
Tcl_Obj *jargv[2];
Tcl_Obj *source, *newFileName;
- Tcl_Obj *temp;
source = FileBasename(interp, objv[i]);
if (source == NULL) {
@@ -182,13 +180,11 @@ FileCopyRename(
}
jargv[0] = objv[objc - 1];
jargv[1] = source;
- temp = Tcl_NewListObj(2, jargv);
- newFileName = Tcl_FSJoinPath(temp, -1);
+ newFileName = TclJoinPath(2, jargv);
Tcl_IncrRefCount(newFileName);
result = CopyRenameOneFile(interp, objv[i], newFileName, copyFlag,
force);
Tcl_DecrRefCount(newFileName);
- Tcl_DecrRefCount(temp);
Tcl_DecrRefCount(source);
if (result == TCL_ERROR) {
@@ -218,26 +214,25 @@ FileCopyRename(
int
TclFileMakeDirsCmd(
+ ClientData clientData, /* Unused */
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;
+ Tcl_Obj *errfile = NULL;
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++) {
+ for (i = 1; i < objc; i++) {
if (Tcl_FSConvertToPathType(interp, objv[i]) != TCL_OK) {
result = TCL_ERROR;
break;
}
- split = Tcl_FSSplitPath(objv[i],&pobjc);
+ split = Tcl_FSSplitPath(objv[i], &pobjc);
Tcl_IncrRefCount(split);
if (pobjc == 0) {
errno = ENOENT;
@@ -274,19 +269,17 @@ TclFileMakeDirsCmd(
* subdirectory.
*/
- if (errno == EEXIST) {
- if ((Tcl_FSStat(target, &statBuf) == 0)
- && S_ISDIR(statBuf.st_mode)) {
- /*
- * It is a directory that wasn't there before, so keep
- * going without error.
- */
-
- Tcl_ResetResult(interp);
- } else {
- errfile = target;
- goto done;
- }
+ if (errno != EEXIST) {
+ errfile = target;
+ goto done;
+ } else if ((Tcl_FSStat(target, &statBuf) == 0)
+ && S_ISDIR(statBuf.st_mode)) {
+ /*
+ * It is a directory that wasn't there before, so keep
+ * going without error.
+ */
+
+ Tcl_ResetResult(interp);
} else {
errfile = target;
goto done;
@@ -306,8 +299,9 @@ TclFileMakeDirsCmd(
done:
if (errfile != NULL) {
- Tcl_AppendResult(interp, "can't create directory \"",
- TclGetString(errfile), "\": ", Tcl_PosixError(interp), NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "can't create directory \"%s\": %s",
+ TclGetString(errfile), Tcl_PosixError(interp)));
result = TCL_ERROR;
}
if (split != NULL) {
@@ -338,6 +332,7 @@ TclFileMakeDirsCmd(
int
TclFileDeleteCmd(
+ ClientData clientData, /* Unused */
Tcl_Interp *interp, /* Used for error reporting */
int objc, /* Number of arguments */
Tcl_Obj *const objv[]) /* Argument strings passed to Tcl_FileCmd. */
@@ -346,16 +341,15 @@ TclFileDeleteCmd(
Tcl_Obj *errfile;
Tcl_Obj *errorBuffer = NULL;
- i = FileForceOption(interp, objc - 2, objv + 2, &force);
+ i = FileForceOption(interp, objc - 1, objv + 1, &force);
if (i < 0) {
return TCL_ERROR;
}
- i += 2;
errfile = NULL;
result = TCL_OK;
- for ( ; i < objc; i++) {
+ for (i++ ; i < objc; i++) {
Tcl_StatBuf statBuf;
errfile = objv[i];
@@ -386,9 +380,9 @@ TclFileDeleteCmd(
result = Tcl_FSRemoveDirectory(objv[i], force, &errorBuffer);
if (result != TCL_OK) {
if ((force == 0) && (errno == EEXIST)) {
- Tcl_AppendResult(interp, "error deleting \"",
- TclGetString(objv[i]), "\": directory not empty",
- NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "error deleting \"%s\": directory not empty",
+ TclGetString(objv[i])));
Tcl_PosixError(interp);
goto done;
}
@@ -428,12 +422,13 @@ TclFileDeleteCmd(
* We try to accomodate poor error results from our Tcl_FS calls.
*/
- Tcl_AppendResult(interp, "error deleting unknown file: ",
- Tcl_PosixError(interp), NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "error deleting unknown file: %s",
+ Tcl_PosixError(interp)));
} else {
- Tcl_AppendResult(interp, "error deleting \"",
- TclGetString(errfile), "\": ", Tcl_PosixError(interp),
- NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "error deleting \"%s\": %s",
+ TclGetString(errfile), Tcl_PosixError(interp)));
}
}
@@ -522,7 +517,7 @@ CopyRenameOneFile(
* 16 bits and we get collisions. See bug #2015723.
*/
-#ifndef WIN32
+#if !defined(WIN32) && !defined(__CYGWIN__)
if ((sourceStatBuf.st_ino != 0) && (targetStatBuf.st_ino != 0)) {
if ((sourceStatBuf.st_ino == targetStatBuf.st_ino) &&
(sourceStatBuf.st_dev == targetStatBuf.st_dev)) {
@@ -542,17 +537,17 @@ CopyRenameOneFile(
if (S_ISDIR(sourceStatBuf.st_mode)
&& !S_ISDIR(targetStatBuf.st_mode)) {
errno = EISDIR;
- Tcl_AppendResult(interp, "can't overwrite file \"",
- TclGetString(target), "\" with directory \"",
- TclGetString(source), "\"", NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "can't overwrite file \"%s\" with directory \"%s\"",
+ TclGetString(target), TclGetString(source)));
goto done;
}
if (!S_ISDIR(sourceStatBuf.st_mode)
&& S_ISDIR(targetStatBuf.st_mode)) {
errno = EISDIR;
- Tcl_AppendResult(interp, "can't overwrite directory \"",
- TclGetString(target), "\" with file \"",
- TclGetString(source), "\"", NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "can't overwrite directory \"%s\" with file \"%s\"",
+ TclGetString(target), TclGetString(source)));
goto done;
}
@@ -583,10 +578,10 @@ CopyRenameOneFile(
}
if (errno == EINVAL) {
- Tcl_AppendResult(interp, "error renaming \"",
- TclGetString(source), "\" to \"", TclGetString(target),
- "\": trying to rename a volume or "
- "move a directory into itself", NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "error renaming \"%s\" to \"%s\": trying to rename a"
+ " volume or move a directory into itself",
+ TclGetString(source), TclGetString(target)));
goto done;
} else if (errno != EXDEV) {
errfile = target;
@@ -630,8 +625,9 @@ CopyRenameOneFile(
* Actual file doesn't exist.
*/
- Tcl_AppendResult(interp, "error copying \"", TclGetString(source),
- "\": the target of this link doesn't exist", NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "error copying \"%s\": the target of this link doesn't"
+ " exist", TclGetString(source)));
goto done;
} else {
int counter = 0;
@@ -766,23 +762,27 @@ CopyRenameOneFile(
}
}
if (result != TCL_OK) {
- Tcl_AppendResult(interp, "can't unlink \"", TclGetString(errfile),
- "\": ", Tcl_PosixError(interp), NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf("can't unlink \"%s\": %s",
+ TclGetString(errfile), Tcl_PosixError(interp)));
errfile = NULL;
}
}
done:
if (errfile != NULL) {
- Tcl_AppendResult(interp, "error ", (copyFlag ? "copying" : "renaming"),
- " \"", TclGetString(source), NULL);
+ Tcl_Obj *errorMsg = Tcl_ObjPrintf("error %s \"%s\"",
+ (copyFlag ? "copying" : "renaming"), TclGetString(source));
+
if (errfile != source) {
- Tcl_AppendResult(interp, "\" to \"", TclGetString(target), NULL);
+ Tcl_AppendPrintfToObj(errorMsg, " to \"%s\"",
+ TclGetString(target));
if (errfile != target) {
- Tcl_AppendResult(interp, "\": \"", TclGetString(errfile),NULL);
+ Tcl_AppendPrintfToObj(errorMsg, ": \"%s\"",
+ TclGetString(errfile));
}
}
- Tcl_AppendResult(interp, "\": ", Tcl_PosixError(interp), NULL);
+ Tcl_AppendPrintfToObj(errorMsg, ": %s", Tcl_PosixError(interp));
+ Tcl_SetObjResult(interp, errorMsg);
}
if (errorBuffer != NULL) {
Tcl_DecrRefCount(errorBuffer);
@@ -821,22 +821,25 @@ FileForceOption(
int *forcePtr) /* If the "-force" was specified, *forcePtr is
* filled with 1, otherwise with 0. */
{
- int force, i;
+ int force, i, idx;
+ static const char *const options[] = {
+ "-force", "--", NULL
+ };
force = 0;
for (i = 0; i < objc; i++) {
if (TclGetString(objv[i])[0] != '-') {
break;
}
- if (strcmp(TclGetString(objv[i]), "-force") == 0) {
+ if (Tcl_GetIndexFromObj(interp, objv[i], options, "option", TCL_EXACT,
+ &idx) != TCL_OK) {
+ return -1;
+ }
+ if (idx == 0 /* -force */) {
force = 1;
- } else if (strcmp(TclGetString(objv[i]), "--") == 0) {
+ } else { /* -- */
i++;
break;
- } else {
- Tcl_AppendResult(interp, "bad option \"", TclGetString(objv[i]),
- "\": should be -force or --", NULL);
- return -1;
}
}
*forcePtr = force;
@@ -940,6 +943,7 @@ FileBasename(
int
TclFileAttrsCmd(
+ ClientData clientData, /* Unused */
Tcl_Interp *interp, /* The interpreter for error reporting. */
int objc, /* Number of command line arguments. */
Tcl_Obj *const objv[]) /* The command line objects. */
@@ -951,22 +955,25 @@ TclFileAttrsCmd(
int numObjStrings = -1;
Tcl_Obj *filePtr;
- if (objc < 3) {
- Tcl_WrongNumArgs(interp, 2, objv,
- "name ?-option value ...?");
+ if (objc < 2) {
+ Tcl_WrongNumArgs(interp, 1, objv, "name ?-option value ...?");
return TCL_ERROR;
}
- filePtr = objv[2];
+ filePtr = objv[1];
if (Tcl_FSConvertToPathType(interp, filePtr) != TCL_OK) {
return TCL_ERROR;
}
- objc -= 3;
- objv += 3;
+ objc -= 2;
+ objv += 2;
result = TCL_ERROR;
Tcl_SetErrno(0);
+ /*
+ * Get the set of attribute names from the filesystem.
+ */
+
attributeStrings = Tcl_FSFileAttrStrings(filePtr, &objStrings);
if (attributeStrings == NULL) {
int index;
@@ -978,12 +985,12 @@ TclFileAttrsCmd(
* There was an error, probably that the filePtr is not
* accepted by any filesystem
*/
- Tcl_AppendResult(interp, "could not read \"",
- TclGetString(filePtr), "\": ", Tcl_PosixError(interp),
- NULL);
- return TCL_ERROR;
+
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "could not read \"%s\": %s",
+ TclGetString(filePtr), Tcl_PosixError(interp)));
}
- goto end;
+ return TCL_ERROR;
}
/*
@@ -1007,7 +1014,16 @@ TclFileAttrsCmd(
}
attributeStringsAllocated[index] = NULL;
attributeStrings = attributeStringsAllocated;
+ } else if (objStrings != NULL) {
+ Tcl_Panic("must not update objPtrRef's variable and return non-NULL");
}
+
+ /*
+ * Process the attributes to produce a list of all of them, the value of a
+ * particular attribute, or to set one or more attributes (depending on
+ * the number of arguments).
+ */
+
if (objc == 0) {
/*
* Get all attributes.
@@ -1058,9 +1074,10 @@ TclFileAttrsCmd(
Tcl_Obj *objPtr = NULL;
if (numObjStrings == 0) {
- Tcl_AppendResult(interp, "bad option \"", TclGetString(objv[0]),
- "\", there are no file attributes in this filesystem.",
- NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "bad option \"%s\", there are no file attributes in this"
+ " filesystem", TclGetString(objv[0])));
+ Tcl_SetErrorCode(interp, "TCL","OPERATION","FATTR","NONE", NULL);
goto end;
}
@@ -1068,6 +1085,9 @@ TclFileAttrsCmd(
"option", 0, &index) != TCL_OK) {
goto end;
}
+ if (attributeStringsAllocated != NULL) {
+ TclFreeIntRep(objv[0]);
+ }
if (Tcl_FSFileAttrsGet(interp, index, filePtr,
&objPtr) != TCL_OK) {
goto end;
@@ -1081,9 +1101,10 @@ TclFileAttrsCmd(
int i, index;
if (numObjStrings == 0) {
- Tcl_AppendResult(interp, "bad option \"", TclGetString(objv[0]),
- "\", there are no file attributes in this filesystem.",
- NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "bad option \"%s\", there are no file attributes in this"
+ " filesystem", TclGetString(objv[0])));
+ Tcl_SetErrorCode(interp, "TCL","OPERATION","FATTR","NONE", NULL);
goto end;
}
@@ -1092,9 +1113,14 @@ TclFileAttrsCmd(
"option", 0, &index) != TCL_OK) {
goto end;
}
+ if (attributeStringsAllocated != NULL) {
+ TclFreeIntRep(objv[i]);
+ }
if (i + 1 == objc) {
- Tcl_AppendResult(interp, "value for \"",
- TclGetString(objv[i]), "\" missing", NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "value for \"%s\" missing", TclGetString(objv[i])));
+ Tcl_SetErrorCode(interp, "TCL", "OPERATION", "FATTR",
+ "NOVALUE", NULL);
goto end;
}
if (Tcl_FSFileAttrsSet(interp, index, filePtr,
@@ -1105,23 +1131,380 @@ TclFileAttrsCmd(
}
result = TCL_OK;
+ /*
+ * Free up the array we allocated and drop our reference to any list of
+ * attribute names issued by the filesystem.
+ */
+
end:
if (attributeStringsAllocated != NULL) {
+ TclStackFree(interp, (void *) attributeStringsAllocated);
+ }
+ if (objStrings != NULL) {
+ Tcl_DecrRefCount(objStrings);
+ }
+ return result;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclFileLinkCmd --
+ *
+ * This function is invoked to process the "file link" Tcl command. See
+ * the user documentation for details on what it does.
+ *
+ * Results:
+ * A standard Tcl result.
+ *
+ * Side effects:
+ * May create a new link.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclFileLinkCmd(
+ ClientData clientData,
+ Tcl_Interp *interp,
+ int objc,
+ Tcl_Obj *const objv[])
+{
+ Tcl_Obj *contents;
+ int index;
+
+ if (objc < 2 || objc > 4) {
+ Tcl_WrongNumArgs(interp, 1, objv, "?-linktype? linkname ?target?");
+ return TCL_ERROR;
+ }
+
+ /*
+ * Index of the 'source' argument.
+ */
+
+ if (objc == 4) {
+ index = 2;
+ } else {
+ index = 1;
+ }
+
+ if (objc > 2) {
+ int linkAction;
+
+ if (objc == 4) {
+ /*
+ * We have a '-linktype' argument.
+ */
+
+ static const char *const linkTypes[] = {
+ "-symbolic", "-hard", NULL
+ };
+ if (Tcl_GetIndexFromObj(interp, objv[1], linkTypes, "switch", 0,
+ &linkAction) != TCL_OK) {
+ return TCL_ERROR;
+ }
+ if (linkAction == 0) {
+ linkAction = TCL_CREATE_SYMBOLIC_LINK;
+ } else {
+ linkAction = TCL_CREATE_HARD_LINK;
+ }
+ } else {
+ linkAction = TCL_CREATE_SYMBOLIC_LINK | TCL_CREATE_HARD_LINK;
+ }
+ if (Tcl_FSConvertToPathType(interp, objv[index]) != TCL_OK) {
+ return TCL_ERROR;
+ }
+
/*
- * Free up the array we allocated.
+ * Create link from source to target.
*/
- TclStackFree(interp, (void *) attributeStringsAllocated);
+ contents = Tcl_FSLink(objv[index], objv[index+1], linkAction);
+ if (contents == NULL) {
+ /*
+ * We handle three common error cases specially, and for all other
+ * errors, we use the standard posix error message.
+ */
+
+ if (errno == EEXIST) {
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "could not create new link \"%s\": that path already"
+ " exists", TclGetString(objv[index])));
+ Tcl_PosixError(interp);
+ } else if (errno == ENOENT) {
+ /*
+ * There are two cases here: either the target doesn't exist,
+ * or the directory of the src doesn't exist.
+ */
+
+ int access;
+ Tcl_Obj *dirPtr = TclPathPart(interp, objv[index],
+ TCL_PATH_DIRNAME);
+
+ if (dirPtr == NULL) {
+ return TCL_ERROR;
+ }
+ access = Tcl_FSAccess(dirPtr, F_OK);
+ Tcl_DecrRefCount(dirPtr);
+ if (access != 0) {
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "could not create new link \"%s\": no such file"
+ " or directory", TclGetString(objv[index])));
+ Tcl_PosixError(interp);
+ } else {
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "could not create new link \"%s\": target \"%s\" "
+ "doesn't exist", TclGetString(objv[index]),
+ TclGetString(objv[index+1])));
+ errno = ENOENT;
+ Tcl_PosixError(interp);
+ }
+ } else {
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "could not create new link \"%s\" pointing to \"%s\": %s",
+ TclGetString(objv[index]),
+ TclGetString(objv[index+1]), Tcl_PosixError(interp)));
+ }
+ return TCL_ERROR;
+ }
+ } else {
+ if (Tcl_FSConvertToPathType(interp, objv[index]) != TCL_OK) {
+ return TCL_ERROR;
+ }
/*
- * We don't need this object that was passed to us any more.
+ * Read link
*/
- if (objStrings != NULL) {
- Tcl_DecrRefCount(objStrings);
+ contents = Tcl_FSLink(objv[index], NULL, 0);
+ if (contents == NULL) {
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "could not read link \"%s\": %s",
+ TclGetString(objv[index]), Tcl_PosixError(interp)));
+ return TCL_ERROR;
}
}
- return result;
+ Tcl_SetObjResult(interp, contents);
+ if (objc == 2) {
+ /*
+ * If we are reading a link, we need to free this result refCount. If
+ * we are creating a link, this will just be objv[index+1], and so we
+ * don't own it.
+ */
+
+ Tcl_DecrRefCount(contents);
+ }
+ return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TclFileReadLinkCmd --
+ *
+ * This function is invoked to process the "file readlink" Tcl command.
+ * See the user documentation for details on what it does.
+ *
+ * Results:
+ * A standard Tcl result.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TclFileReadLinkCmd(
+ ClientData clientData,
+ Tcl_Interp *interp,
+ int objc,
+ Tcl_Obj *const objv[])
+{
+ Tcl_Obj *contents;
+
+ if (objc != 2) {
+ Tcl_WrongNumArgs(interp, 1, objv, "name");
+ return TCL_ERROR;
+ }
+
+ if (Tcl_FSConvertToPathType(interp, objv[1]) != TCL_OK) {
+ return TCL_ERROR;
+ }
+
+ contents = Tcl_FSLink(objv[1], NULL, 0);
+
+ if (contents == NULL) {
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "could not read link \"%s\": %s",
+ TclGetString(objv[1]), Tcl_PosixError(interp)));
+ return TCL_ERROR;
+ }
+ Tcl_SetObjResult(interp, contents);
+ Tcl_DecrRefCount(contents);
+ return TCL_OK;
+}
+
+/*
+ *---------------------------------------------------------------------------
+ *
+ * TclFileTemporaryCmd
+ *
+ * This function implements the "tempfile" subcommand of the "file"
+ * command.
+ *
+ * Results:
+ * Returns a standard Tcl result.
+ *
+ * Side effects:
+ * Creates a temporary file. Opens a channel to that file and puts the
+ * name of that channel in the result. *Might* register suitable exit
+ * handlers to ensure that the temporary file gets deleted. Might write
+ * to a variable, so reentrancy is a potential issue.
+ *
+ *---------------------------------------------------------------------------
+ */
+
+int
+TclFileTemporaryCmd(
+ ClientData clientData,
+ Tcl_Interp *interp,
+ int objc,
+ Tcl_Obj *const objv[])
+{
+ Tcl_Obj *nameVarObj = NULL; /* Variable to store the name of the temporary
+ * file in. */
+ Tcl_Obj *nameObj = NULL; /* Object that will contain the filename. */
+ Tcl_Channel chan; /* The channel opened (RDWR) on the temporary
+ * file, or NULL if there's an error. */
+ Tcl_Obj *tempDirObj = NULL, *tempBaseObj = NULL, *tempExtObj = NULL;
+ /* Pieces of template. Each piece is NULL if
+ * it is omitted. The platform temporary file
+ * engine might ignore some pieces. */
+
+ if (objc < 1 || objc > 3) {
+ Tcl_WrongNumArgs(interp, 1, objv, "?nameVar? ?template?");
+ return TCL_ERROR;
+ }
+
+ if (objc > 1) {
+ nameVarObj = objv[1];
+ TclNewObj(nameObj);
+ }
+ if (objc > 2) {
+ int length;
+ Tcl_Obj *templateObj = objv[2];
+ const char *string = TclGetStringFromObj(templateObj, &length);
+
+ /*
+ * Treat an empty string as if it wasn't there.
+ */
+
+ if (length == 0) {
+ goto makeTemporary;
+ }
+
+ /*
+ * The template only gives a directory if there is a directory
+ * separator in it.
+ */
+
+ if (strchr(string, '/') != NULL
+ || (tclPlatform == TCL_PLATFORM_WINDOWS
+ && strchr(string, '\\') != NULL)) {
+ tempDirObj = TclPathPart(interp, templateObj, TCL_PATH_DIRNAME);
+
+ /*
+ * Only allow creation of temporary files in the native filesystem
+ * since they are frequently used for integration with external
+ * tools or system libraries. [Bug 2388866]
+ */
+
+ if (tempDirObj != NULL && Tcl_FSGetFileSystemForPath(tempDirObj)
+ != &tclNativeFilesystem) {
+ TclDecrRefCount(tempDirObj);
+ tempDirObj = NULL;
+ }
+ }
+
+ /*
+ * The template only gives the filename if the last character isn't a
+ * directory separator.
+ */
+
+ if (string[length-1] != '/' && (tclPlatform != TCL_PLATFORM_WINDOWS
+ || string[length-1] != '\\')) {
+ Tcl_Obj *tailObj = TclPathPart(interp, templateObj,
+ TCL_PATH_TAIL);
+
+ if (tailObj != NULL) {
+ tempBaseObj = TclPathPart(interp, tailObj, TCL_PATH_ROOT);
+ tempExtObj = TclPathPart(interp, tailObj, TCL_PATH_EXTENSION);
+ TclDecrRefCount(tailObj);
+ }
+ }
+ }
+
+ /*
+ * Convert empty parts of the template into unspecified parts.
+ */
+
+ if (tempDirObj && !TclGetString(tempDirObj)[0]) {
+ TclDecrRefCount(tempDirObj);
+ tempDirObj = NULL;
+ }
+ if (tempBaseObj && !TclGetString(tempBaseObj)[0]) {
+ TclDecrRefCount(tempBaseObj);
+ tempBaseObj = NULL;
+ }
+ if (tempExtObj && !TclGetString(tempExtObj)[0]) {
+ TclDecrRefCount(tempExtObj);
+ tempExtObj = NULL;
+ }
+
+ /*
+ * Create and open the temporary file.
+ */
+
+ makeTemporary:
+ chan = TclpOpenTemporaryFile(tempDirObj,tempBaseObj,tempExtObj, nameObj);
+
+ /*
+ * If we created pieces of template, get rid of them now.
+ */
+
+ if (tempDirObj) {
+ TclDecrRefCount(tempDirObj);
+ }
+ if (tempBaseObj) {
+ TclDecrRefCount(tempBaseObj);
+ }
+ if (tempExtObj) {
+ TclDecrRefCount(tempExtObj);
+ }
+
+ /*
+ * Deal with results.
+ */
+
+ if (chan == NULL) {
+ if (nameVarObj) {
+ TclDecrRefCount(nameObj);
+ }
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "can't create temporary file: %s", Tcl_PosixError(interp)));
+ return TCL_ERROR;
+ }
+ Tcl_RegisterChannel(interp, chan);
+ if (nameVarObj != NULL) {
+ if (Tcl_ObjSetVar2(interp, nameVarObj, NULL, nameObj,
+ TCL_LEAVE_ERR_MSG) == NULL) {
+ Tcl_UnregisterChannel(interp, chan);
+ return TCL_ERROR;
+ }
+ }
+ Tcl_SetObjResult(interp, Tcl_NewStringObj(Tcl_GetChannelName(chan), -1));
+ return TCL_OK;
}
/*
generated by cgit v0.12 at 2024-10-11 19:58:39 (GMT)