/*
* tclCmdAH.c --
*
* This file contains the top-level command routines for most of the Tcl
* built-in commands whose names begin with the letters A to H.
*
* Copyright (c) 1987-1993 The Regents of the University of California.
* Copyright (c) 1994-1997 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: tclCmdAH.c,v 1.93.2.2 2009/12/28 13:53:40 dkf Exp $
*/
#include "tclInt.h"
#include <locale.h>
/*
* Prototypes for local procedures defined in this file:
*/
static int CheckAccess(Tcl_Interp *interp, Tcl_Obj *pathPtr,
int mode);
static int EncodingDirsObjCmd(ClientData dummy,
Tcl_Interp *interp, int objc,
Tcl_Obj *CONST objv[]);
static int GetStatBuf(Tcl_Interp *interp, Tcl_Obj *pathPtr,
Tcl_FSStatProc *statProc, Tcl_StatBuf *statPtr);
static char * GetTypeFromMode(int mode);
static int StoreStatData(Tcl_Interp *interp, Tcl_Obj *varName,
Tcl_StatBuf *statPtr);
/*
*----------------------------------------------------------------------
*
* Tcl_BreakObjCmd --
*
* This procedure is invoked to process the "break" Tcl command. See the
* user documentation for details on what it does.
*
* With the bytecode compiler, this procedure is only called when a
* command name is computed at runtime, and is "break" or the name to
* which "break" was renamed: e.g., "set z break; $z"
*
* Results:
* A standard Tcl result.
*
* Side effects:
* See the user documentation.
*
*----------------------------------------------------------------------
*/
/* ARGSUSED */
int
Tcl_BreakObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *CONST objv[]) /* Argument objects. */
{
if (objc != 1) {
Tcl_WrongNumArgs(interp, 1, objv, NULL);
return TCL_ERROR;
}
return TCL_BREAK;
}
/*
*----------------------------------------------------------------------
*
* Tcl_CaseObjCmd --
*
* This procedure is invoked to process the "case" Tcl command. See the
* user documentation for details on what it does. THIS COMMAND IS
* OBSOLETE AND DEPRECATED. SLATED FOR REMOVAL IN TCL 9.0.
*
* Results:
* A standard Tcl object result.
*
* Side effects:
* See the user documentation.
*
*----------------------------------------------------------------------
*/
/* ARGSUSED */
int
Tcl_CaseObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *CONST objv[]) /* Argument objects. */
{
register int i;
int body, result, caseObjc;
char *stringPtr, *arg;
Tcl_Obj *CONST *caseObjv;
Tcl_Obj *armPtr;
if (objc < 3) {
Tcl_WrongNumArgs(interp, 1, objv,
"string ?in? patList body ... ?default body?");
return TCL_ERROR;
}
stringPtr = TclGetString(objv[1]);
body = -1;
arg = TclGetString(objv[2]);
if (strcmp(arg, "in") == 0) {
i = 3;
} else {
i = 2;
}
caseObjc = objc - i;
caseObjv = objv + i;
/*
* If all of the pattern/command pairs are lumped into a single argument,
* split them out again.
*/
if (caseObjc == 1) {
Tcl_Obj **newObjv;
TclListObjGetElements(interp, caseObjv[0], &caseObjc, &newObjv);
caseObjv = newObjv;
}
for (i = 0; i < caseObjc; i += 2) {
int patObjc, j;
CONST char **patObjv;
char *pat;
unsigned char *p;
if (i == (caseObjc - 1)) {
Tcl_ResetResult(interp);
Tcl_AppendResult(interp, "extra case pattern with no body", NULL);
return TCL_ERROR;
}
/*
* Check for special case of single pattern (no list) with no
* backslash sequences.
*/
pat = TclGetString(caseObjv[i]);
for (p = (unsigned char *) pat; *p != '\0'; p++) {
if (isspace(*p) || (*p == '\\')) { /* INTL: ISO space, UCHAR */
break;
}
}
if (*p == '\0') {
if ((*pat == 'd') && (strcmp(pat, "default") == 0)) {
body = i + 1;
}
if (Tcl_StringMatch(stringPtr, pat)) {
body = i + 1;
goto match;
}
continue;
}
/*
* Break up pattern lists, then check each of the patterns in the
* list.
*/
result = Tcl_SplitList(interp, pat, &patObjc, &patObjv);
if (result != TCL_OK) {
return result;
}
for (j = 0; j < patObjc; j++) {
if (Tcl_StringMatch(stringPtr, patObjv[j])) {
body = i + 1;
break;
}
}
ckfree((char *) patObjv);
if (j < patObjc) {
break;
}
}
match:
if (body != -1) {
armPtr = caseObjv[body - 1];
result = Tcl_EvalObjEx(interp, caseObjv[body], 0);
if (result == TCL_ERROR) {
Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
"\n (\"%.50s\" arm line %d)",
TclGetString(armPtr), interp->errorLine));
}
return result;
}
/*
* Nothing matched: return nothing.
*/
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* Tcl_CatchObjCmd --
*
* This object-based procedure is invoked to process the "catch" Tcl
* command. See the user documentation for details on what it does.
*
* Results:
* A standard Tcl object result.
*
* Side effects:
* See the user documentation.
*
*----------------------------------------------------------------------
*/
/* ARGSUSED */
int
Tcl_CatchObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *CONST objv[]) /* Argument objects. */
{
Tcl_Obj *varNamePtr = NULL;
Tcl_Obj *optionVarNamePtr = NULL;
int result;
Interp *iPtr = (Interp *) interp;
if ((objc < 2) || (objc > 4)) {
Tcl_WrongNumArgs(interp, 1, objv,
"script ?resultVarName? ?optionVarName?");
return TCL_ERROR;
}
if (objc >= 3) {
varNamePtr = objv[2];
}
if (objc == 4) {
optionVarNamePtr = objv[3];
}
/*
* TIP #280. Make invoking context available to caught script.
*/
result = TclEvalObjEx(interp, objv[1], 0, iPtr->cmdFramePtr, 1);
/*
* We disable catch in interpreters where the limit has been exceeded.
*/
if (Tcl_LimitExceeded(interp)) {
Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
"\n (\"catch\" body line %d)", interp->errorLine));
return TCL_ERROR;
}
if (objc >= 3) {
if (NULL == Tcl_ObjSetVar2(interp, varNamePtr, NULL,
Tcl_GetObjResult(interp), 0)) {
Tcl_ResetResult(interp);
Tcl_AppendResult(interp,
"couldn't save command result in variable", NULL);
return TCL_ERROR;
}
}
if (objc == 4) {
Tcl_Obj *options = Tcl_GetReturnOptions(interp, result);
if (NULL == Tcl_ObjSetVar2(interp, optionVarNamePtr, NULL,
options, 0)) {
Tcl_ResetResult(interp);
Tcl_AppendResult(interp,
"couldn't save return options in variable", NULL);
return TCL_ERROR;
}
}
Tcl_ResetResult(interp);
Tcl_SetObjResult(interp, Tcl_NewIntObj(result));
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* Tcl_CdObjCmd --
*
* This procedure is invoked to process the "cd" Tcl command. See the
* user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* See the user documentation.
*
*----------------------------------------------------------------------
*/
/* ARGSUSED */
int
Tcl_CdObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *CONST objv[]) /* Argument objects. */
{
Tcl_Obj *dir;
int result;
if (objc > 2) {
Tcl_WrongNumArgs(interp, 1, objv, "?dirName?");
return TCL_ERROR;
}
if (objc == 2) {
dir = objv[1];
} else {
TclNewLiteralStringObj(dir, "~");
Tcl_IncrRefCount(dir);
}
if (Tcl_FSConvertToPathType(interp, dir) != TCL_OK) {
result = TCL_ERROR;
} else {
result = Tcl_FSChdir(dir);
if (result != TCL_OK) {
Tcl_AppendResult(interp, "couldn't change working directory to \"",
TclGetString(dir), "\": ", Tcl_PosixError(interp), NULL);
result = TCL_ERROR;
}
}
if (objc != 2) {
Tcl_DecrRefCount(dir);
}
return result;
}
/*
*----------------------------------------------------------------------
*
* Tcl_ConcatObjCmd --
*
* This object-based procedure is invoked to process the "concat" Tcl
* command. See the user documentation for details on what it does.
*
* Results:
* A standard Tcl object result.
*
* Side effects:
* See the user documentation.
*
*----------------------------------------------------------------------
*/
/* ARGSUSED */
int
Tcl_ConcatObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *CONST objv[]) /* Argument objects. */
{
if (objc >= 2) {
Tcl_SetObjResult(interp, Tcl_ConcatObj(objc-1, objv+1));
}
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* Tcl_ContinueObjCmd --
*
* This procedure is invoked to process the "continue" Tcl command. See
* the user documentation for details on what it does.
*
* With the bytecode compiler, this procedure is only called when a
* command name is computed at runtime, and is "continue" or the name to
* which "continue" was renamed: e.g., "set z continue; $z"
*
* Results:
* A standard Tcl result.
*
* Side effects:
* See the user documentation.
*
*----------------------------------------------------------------------
*/
/* ARGSUSED */
int
Tcl_ContinueObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *CONST objv[]) /* Argument objects. */
{
if (objc != 1) {
Tcl_WrongNumArgs(interp, 1, objv, NULL);
return TCL_ERROR;
}
return TCL_CONTINUE;
}
/*
*----------------------------------------------------------------------
*
* Tcl_EncodingObjCmd --
*
* This command manipulates encodings.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* See the user documentation.
*
*----------------------------------------------------------------------
*/
int
Tcl_EncodingObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *CONST objv[]) /* Argument objects. */
{
int index;
static CONST char *optionStrings[] = {
"convertfrom", "convertto", "dirs", "names", "system",
NULL
};
enum options {
ENC_CONVERTFROM, ENC_CONVERTTO, ENC_DIRS, ENC_NAMES, ENC_SYSTEM
};
if (objc < 2) {
Tcl_WrongNumArgs(interp, 1, objv, "option ?arg ...?");
return TCL_ERROR;
}
if (Tcl_GetIndexFromObj(interp, objv[1], optionStrings, "option", 0,
&index) != TCL_OK) {
return TCL_ERROR;
}
switch ((enum options) index) {
case ENC_CONVERTTO:
case ENC_CONVERTFROM: {
Tcl_Obj *data;
Tcl_DString ds;
Tcl_Encoding encoding;
int length;
char *stringPtr;
if (objc == 3) {
encoding = Tcl_GetEncoding(interp, NULL);
data = objv[2];
} else if (objc == 4) {
if (Tcl_GetEncodingFromObj(interp, objv[2], &encoding) != TCL_OK) {
return TCL_ERROR;
}
data = objv[3];
} else {
Tcl_WrongNumArgs(interp, 2, objv, "?encoding? data");
return TCL_ERROR;
}
if ((enum options) index == ENC_CONVERTFROM) {
/*
* Treat the string as binary data.
*/
stringPtr = (char *) Tcl_GetByteArrayFromObj(data, &length);
Tcl_ExternalToUtfDString(encoding, stringPtr, length, &ds);
/*
* Note that we cannot use Tcl_DStringResult here because it will
* truncate the string at the first null byte.
*/
Tcl_SetObjResult(interp, Tcl_NewStringObj(
Tcl_DStringValue(&ds), Tcl_DStringLength(&ds)));
Tcl_DStringFree(&ds);
} else {
/*
* Store the result as binary data.
*/
stringPtr = TclGetStringFromObj(data, &length);
Tcl_UtfToExternalDString(encoding, stringPtr, length, &ds);
Tcl_SetObjResult(interp, Tcl_NewByteArrayObj(
(unsigned char *) Tcl_DStringValue(&ds),
Tcl_DStringLength(&ds)));
Tcl_DStringFree(&ds);
}
Tcl_FreeEncoding(encoding);
break;
}
case ENC_DIRS:
return EncodingDirsObjCmd(dummy, interp, objc-1, objv+1);
case ENC_NAMES:
if (objc > 2) {
Tcl_WrongNumArgs(interp, 2, objv, NULL);
return TCL_ERROR;
}
Tcl_GetEncodingNames(interp);
break;
case ENC_SYSTEM:
if (objc > 3) {
Tcl_WrongNumArgs(interp, 2, objv, "?encoding?");
return TCL_ERROR;
}
if (objc == 2) {
Tcl_SetObjResult(interp, Tcl_NewStringObj(
Tcl_GetEncodingName(NULL), -1));
} else {
return Tcl_SetSystemEncoding(interp, TclGetString(objv[2]));
}
break;
}
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* EncodingDirsObjCmd --
*
* This command manipulates the encoding search path.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* Can set the encoding search path.
*
*----------------------------------------------------------------------
*/
int
EncodingDirsObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *CONST objv[]) /* Argument objects. */
{
if (objc > 2) {
Tcl_WrongNumArgs(interp, 1, objv, "?dirList?");
return TCL_ERROR;
}
if (objc == 1) {
Tcl_SetObjResult(interp, Tcl_GetEncodingSearchPath());
return TCL_OK;
}
if (Tcl_SetEncodingSearchPath(objv[1]) == TCL_ERROR) {
Tcl_AppendResult(interp, "expected directory list but got \"",
TclGetString(objv[1]), "\"", NULL);
return TCL_ERROR;
}
Tcl_SetObjResult(interp, objv[1]);
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* Tcl_ErrorObjCmd --
*
* This procedure is invoked to process the "error" Tcl command. See the
* user documentation for details on what it does.
*
* Results:
* A standard Tcl object result.
*
* Side effects:
* See the user documentation.
*
*----------------------------------------------------------------------
*/
/* ARGSUSED */
int
Tcl_ErrorObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *CONST objv[]) /* Argument objects. */
{
Tcl_Obj *options, *optName;
if ((objc < 2) || (objc > 4)) {
Tcl_WrongNumArgs(interp, 1, objv, "message ?errorInfo? ?errorCode?");
return TCL_ERROR;
}
TclNewLiteralStringObj(options, "-code error -level 0");
if (objc >= 3) { /* Process the optional info argument */
TclNewLiteralStringObj(optName, "-errorinfo");
Tcl_ListObjAppendElement(NULL, options, optName);
Tcl_ListObjAppendElement(NULL, options, objv[2]);
}
if (objc >= 4) { /* Process the optional code argument */
TclNewLiteralStringObj(optName, "-errorcode");
Tcl_ListObjAppendElement(NULL, options, optName);
Tcl_ListObjAppendElement(NULL, options, objv[3]);
}
Tcl_SetObjResult(interp, objv[1]);
return Tcl_SetReturnOptions(interp, options);
}
/*
*----------------------------------------------------------------------
*
* Tcl_EvalObjCmd --
*
* This object-based procedure is invoked to process the "eval" Tcl
* command. See the user documentation for details on what it does.
*
* Results:
* A standard Tcl object result.
*
* Side effects:
* See the user documentation.
*
*----------------------------------------------------------------------
*/
/* ARGSUSED */
int
Tcl_EvalObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *CONST objv[]) /* Argument objects. */
{
int result;
register Tcl_Obj *objPtr;
Interp *iPtr = (Interp *) interp;
if (objc < 2) {
Tcl_WrongNumArgs(interp, 1, objv, "arg ?arg ...?");
return TCL_ERROR;
}
if (objc == 2) {
/*
* TIP #280. Make argument location available to eval'd script.
*/
CmdFrame* invoker = iPtr->cmdFramePtr;
int word = 1;
TclArgumentGet (interp, objv[1], &invoker, &word);
result = TclEvalObjEx(interp, objv[1], TCL_EVAL_DIRECT,
invoker, word);
} else {
/*
* More than one argument: concatenate them together with spaces
* between, then evaluate the result. Tcl_EvalObjEx will delete the
* object when it decrements its refcount after eval'ing it.
*/
objPtr = Tcl_ConcatObj(objc-1, objv+1);
/*
* TIP #280. Make invoking context available to eval'd script.
*/
result = TclEvalObjEx(interp, objPtr, TCL_EVAL_DIRECT, NULL, 0);
}
if (result == TCL_ERROR) {
Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
"\n (\"eval\" body line %d)", interp->errorLine));
}
return result;
}
/*
*----------------------------------------------------------------------
*
* Tcl_ExitObjCmd --
*
* This procedure is invoked to process the "exit" Tcl command. See the
* user documentation for details on what it does.
*
* Results:
* A standard Tcl object result.
*
* Side effects:
* See the user documentation.
*
*----------------------------------------------------------------------
*/
/* ARGSUSED */
int
Tcl_ExitObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *CONST objv[]) /* Argument objects. */
{
int value;
if ((objc != 1) && (objc != 2)) {
Tcl_WrongNumArgs(interp, 1, objv, "?returnCode?");
return TCL_ERROR;
}
if (objc == 1) {
value = 0;
} else if (Tcl_GetIntFromObj(interp, objv[1], &value) != TCL_OK) {
return TCL_ERROR;
}
Tcl_Exit(value);
/*NOTREACHED*/
return TCL_OK; /* Better not ever reach this! */
}
/*
*----------------------------------------------------------------------
*
* Tcl_ExprObjCmd --
*
* This object-based procedure is invoked to process the "expr" Tcl
* command. See the user documentation for details on what it does.
*
* With the bytecode compiler, this procedure is called in two
* circumstances: 1) to execute expr commands that are too complicated or
* too unsafe to try compiling directly into an inline sequence of
* instructions, and 2) to execute commands where the command name is
* computed at runtime and is "expr" or the name to which "expr" was
* renamed (e.g., "set z expr; $z 2+3")
*
* Results:
* A standard Tcl object result.
*
* Side effects:
* See the user documentation.
*
*----------------------------------------------------------------------
*/
/* ARGSUSED */
int
Tcl_ExprObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *CONST objv[]) /* Argument objects. */
{
Tcl_Obj *resultPtr;
int result;
if (objc < 2) {
Tcl_WrongNumArgs(interp, 1, objv, "arg ?arg ...?");
return TCL_ERROR;
}
if (objc == 2) {
result = Tcl_ExprObj(interp, objv[1], &resultPtr);
} else {
Tcl_Obj *objPtr = Tcl_ConcatObj(objc-1, objv+1);
Tcl_IncrRefCount(objPtr);
result = Tcl_ExprObj(interp, objPtr, &resultPtr);
Tcl_DecrRefCount(objPtr);
}
if (result == TCL_OK) {
Tcl_SetObjResult(interp, resultPtr);
Tcl_DecrRefCount(resultPtr); /* Done with the result object */
}
return result;
}
/*
*----------------------------------------------------------------------
*
* Tcl_FileObjCmd --
*
* This procedure is invoked to process the "file" Tcl command. See the
* user documentation for details on what it does. PLEASE NOTE THAT THIS
* FAILS WITH FILENAMES AND PATHS WITH EMBEDDED NULLS. With the
* object-based Tcl_FS APIs, the above NOTE may no longer be true. In any
* case this assertion should be tested.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* See the user documentation.
*
*----------------------------------------------------------------------
*/
/* ARGSUSED */
int
Tcl_FileObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *CONST objv[]) /* Argument objects. */
{
int index, value;
Tcl_StatBuf buf;
struct utimbuf tval;
/*
* This list of constants should match the fileOption string array below.
*/
static CONST char *fileOptions[] = {
"atime", "attributes", "channels", "copy",
"delete",
"dirname", "executable", "exists", "extension",
"isdirectory", "isfile", "join", "link",
"lstat", "mtime", "mkdir", "nativename",
"normalize", "owned",
"pathtype", "readable", "readlink", "rename",
"rootname", "separator", "size", "split",
"stat", "system",
"tail", "type", "volumes", "writable",
NULL
};
enum options {
FCMD_ATIME, FCMD_ATTRIBUTES, FCMD_CHANNELS, FCMD_COPY,
FCMD_DELETE,
FCMD_DIRNAME, FCMD_EXECUTABLE, FCMD_EXISTS, FCMD_EXTENSION,
FCMD_ISDIRECTORY, FCMD_ISFILE, FCMD_JOIN, FCMD_LINK,
FCMD_LSTAT, FCMD_MTIME, FCMD_MKDIR, FCMD_NATIVENAME,
FCMD_NORMALIZE, FCMD_OWNED,
FCMD_PATHTYPE, FCMD_READABLE, FCMD_READLINK, FCMD_RENAME,
FCMD_ROOTNAME, FCMD_SEPARATOR, FCMD_SIZE, FCMD_SPLIT,
FCMD_STAT, FCMD_SYSTEM,
FCMD_TAIL, FCMD_TYPE, FCMD_VOLUMES, FCMD_WRITABLE
};
if (objc < 2) {
Tcl_WrongNumArgs(interp, 1, objv, "option ?arg ...?");
return TCL_ERROR;
}
if (Tcl_GetIndexFromObj(interp, objv[1], fileOptions, "option", 0,
&index) != TCL_OK) {
return TCL_ERROR;
}
switch ((enum options) index) {
case FCMD_ATIME:
case FCMD_MTIME:
if ((objc < 3) || (objc > 4)) {
Tcl_WrongNumArgs(interp, 2, objv, "name ?time?");
return TCL_ERROR;
}
if (GetStatBuf(interp, objv[2], Tcl_FSStat, &buf) != TCL_OK) {
return TCL_ERROR;
}
if (objc == 4) {
/*
* Need separate variable for reading longs from an object on
* 64-bit platforms. [Bug #698146]
*/
long newTime;
if (TclGetLongFromObj(interp, objv[3], &newTime) != TCL_OK) {
return TCL_ERROR;
}
if (index == FCMD_ATIME) {
tval.actime = newTime;
tval.modtime = buf.st_mtime;
} else { /* index == FCMD_MTIME */
tval.actime = buf.st_atime;
tval.modtime = newTime;
}
if (Tcl_FSUtime(objv[2], &tval) != 0) {
Tcl_AppendResult(interp, "could not set ",
(index == FCMD_ATIME ? "access" : "modification"),
" time for file \"", TclGetString(objv[2]), "\": ",
Tcl_PosixError(interp), NULL);
return TCL_ERROR;
}
/*
* Do another stat to ensure that the we return the new recognized
* atime - hopefully the same as the one we sent in. However, fs's
* like FAT don't even know what atime is.
*/
if (GetStatBuf(interp, objv[2], Tcl_FSStat, &buf) != TCL_OK) {
return TCL_ERROR;
}
}
Tcl_SetObjResult(interp, Tcl_NewLongObj((long)
(index == FCMD_ATIME ? buf.st_atime : buf.st_mtime)));
return TCL_OK;
case FCMD_ATTRIBUTES:
return TclFileAttrsCmd(interp, objc, objv);
case FCMD_CHANNELS:
if ((objc < 2) || (objc > 3)) {
Tcl_WrongNumArgs(interp, 2, objv, "?pattern?");
return TCL_ERROR;
}
return Tcl_GetChannelNamesEx(interp,
((objc == 2) ? NULL : TclGetString(objv[2])));
case FCMD_COPY:
return TclFileCopyCmd(interp, objc, objv);
case FCMD_DELETE:
return TclFileDeleteCmd(interp, objc, objv);
case FCMD_DIRNAME: {
Tcl_Obj *dirPtr;
if (objc != 3) {
goto only3Args;
}
dirPtr = TclPathPart(interp, objv[2], TCL_PATH_DIRNAME);
if (dirPtr == NULL) {
return TCL_ERROR;
} else {
Tcl_SetObjResult(interp, dirPtr);
Tcl_DecrRefCount(dirPtr);
return TCL_OK;
}
}
case FCMD_EXECUTABLE:
if (objc != 3) {
goto only3Args;
}
return CheckAccess(interp, objv[2], X_OK);
case FCMD_EXISTS:
if (objc != 3) {
goto only3Args;
}
return CheckAccess(interp, objv[2], F_OK);
case FCMD_EXTENSION: {
Tcl_Obj *ext;
if (objc != 3) {
goto only3Args;
}
ext = TclPathPart(interp, objv[2], TCL_PATH_EXTENSION);
if (ext != NULL) {
Tcl_SetObjResult(interp, ext);
Tcl_DecrRefCount(ext);
return TCL_OK;
} else {
return TCL_ERROR;
}
}
case FCMD_ISDIRECTORY:
if (objc != 3) {
goto only3Args;
}
value = 0;
if (GetStatBuf(NULL, objv[2], Tcl_FSStat, &buf) == TCL_OK) {
value = S_ISDIR(buf.st_mode);
}
Tcl_SetObjResult(interp, Tcl_NewBooleanObj(value));
return TCL_OK;
case FCMD_ISFILE:
if (objc != 3) {
goto only3Args;
}
value = 0;
if (GetStatBuf(NULL, objv[2], Tcl_FSStat, &buf) == TCL_OK) {
value = S_ISREG(buf.st_mode);
}
Tcl_SetObjResult(interp, Tcl_NewBooleanObj(value));
return TCL_OK;
case FCMD_OWNED:
if (objc != 3) {
goto only3Args;
}
value = 0;
if (GetStatBuf(NULL, objv[2], Tcl_FSStat, &buf) == TCL_OK) {
/*
* For Windows, there are no user ids associated with a file, so
* we always return 1.
*/
#if defined(__WIN32__)
value = 1;
#else
value = (geteuid() == buf.st_uid);
#endif
}
Tcl_SetObjResult(interp, Tcl_NewBooleanObj(value));
return TCL_OK;
case FCMD_JOIN: {
Tcl_Obj *resObj;
if (objc < 3) {
Tcl_WrongNumArgs(interp, 2, objv, "name ?name ...?");
return TCL_ERROR;
}
resObj = Tcl_FSJoinToPath(NULL, objc - 2, objv + 2);
Tcl_SetObjResult(interp, resObj);
return TCL_OK;
}
case FCMD_LINK: {
Tcl_Obj *contents;
int index;
if (objc < 3 || objc > 5) {
Tcl_WrongNumArgs(interp, 2, objv, "?-linktype? linkname ?target?");
return TCL_ERROR;
}
/*
* Index of the 'source' argument.
*/
if (objc == 5) {
index = 3;
} else {
index = 2;
}
if (objc > 3) {
int linkAction;
if (objc == 5) {
/*
* We have a '-linktype' argument.
*/
static CONST char *linkTypes[] = {
"-symbolic", "-hard", NULL
};
if (Tcl_GetIndexFromObj(interp, objv[2], 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;
}
/*
* Create link from source to target.
*/
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_AppendResult(interp, "could not create new link \"",
TclGetString(objv[index]),
"\": that path already exists", NULL);
} 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_AppendResult(interp,
"could not create new link \"",
TclGetString(objv[index]),
"\": no such file or directory", NULL);
} else {
Tcl_AppendResult(interp,
"could not create new link \"",
TclGetString(objv[index]), "\": target \"",
TclGetString(objv[index+1]),
"\" doesn't exist", NULL);
}
} else {
Tcl_AppendResult(interp,
"could not create new link \"",
TclGetString(objv[index]), "\" pointing to \"",
TclGetString(objv[index+1]), "\": ",
Tcl_PosixError(interp), NULL);
}
return TCL_ERROR;
}
} else {
if (Tcl_FSConvertToPathType(interp, objv[index]) != TCL_OK) {
return TCL_ERROR;
}
/*
* Read link
*/
contents = Tcl_FSLink(objv[index], NULL, 0);
if (contents == NULL) {
Tcl_AppendResult(interp, "could not read link \"",
TclGetString(objv[index]), "\": ",
Tcl_PosixError(interp), NULL);
return TCL_ERROR;
}
}
Tcl_SetObjResult(interp, contents);
if (objc == 3) {
/*
* 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;
}
case FCMD_LSTAT:
if (objc != 4) {
Tcl_WrongNumArgs(interp, 2, objv, "name varName");
return TCL_ERROR;
}
if (GetStatBuf(interp, objv[2], Tcl_FSLstat, &buf) != TCL_OK) {
return TCL_ERROR;
}
return StoreStatData(interp, objv[3], &buf);
case FCMD_STAT:
if (objc != 4) {
Tcl_WrongNumArgs(interp, 2, objv, "name varName");
return TCL_ERROR;
}
if (GetStatBuf(interp, objv[2], Tcl_FSStat, &buf) != TCL_OK) {
return TCL_ERROR;
}
return StoreStatData(interp, objv[3], &buf);
case FCMD_SIZE:
if (objc != 3) {
goto only3Args;
}
if (GetStatBuf(interp, objv[2], Tcl_FSStat, &buf) != TCL_OK) {
return TCL_ERROR;
}
Tcl_SetObjResult(interp,
Tcl_NewWideIntObj((Tcl_WideInt) buf.st_size));
return TCL_OK;
case FCMD_TYPE:
if (objc != 3) {
goto only3Args;
}
if (GetStatBuf(interp, objv[2], Tcl_FSLstat, &buf) != TCL_OK) {
return TCL_ERROR;
}
Tcl_SetObjResult(interp, Tcl_NewStringObj(
GetTypeFromMode((unsigned short) buf.st_mode), -1));
return TCL_OK;
case FCMD_MKDIR:
if (objc < 3) {
Tcl_WrongNumArgs(interp, 2, objv, "name ?name ...?");
return TCL_ERROR;
}
return TclFileMakeDirsCmd(interp, objc, objv);
case FCMD_NATIVENAME: {
CONST char *fileName;
Tcl_DString ds;
if (objc != 3) {
goto only3Args;
}
fileName = TclGetString(objv[2]);
fileName = Tcl_TranslateFileName(interp, fileName, &ds);
if (fileName == NULL) {
return TCL_ERROR;
}
Tcl_SetObjResult(interp, Tcl_NewStringObj(fileName,
Tcl_DStringLength(&ds)));
Tcl_DStringFree(&ds);
return TCL_OK;
}
case FCMD_NORMALIZE: {
Tcl_Obj *fileName;
if (objc != 3) {
Tcl_WrongNumArgs(interp, 2, objv, "filename");
return TCL_ERROR;
}
fileName = Tcl_FSGetNormalizedPath(interp, objv[2]);
if (fileName == NULL) {
return TCL_ERROR;
}
Tcl_SetObjResult(interp, fileName);
return TCL_OK;
}
case FCMD_PATHTYPE: {
Tcl_Obj *typeName;
if (objc != 3) {
goto only3Args;
}
switch (Tcl_FSGetPathType(objv[2])) {
case TCL_PATH_ABSOLUTE:
TclNewLiteralStringObj(typeName, "absolute");
break;
case TCL_PATH_RELATIVE:
TclNewLiteralStringObj(typeName, "relative");
break;
case TCL_PATH_VOLUME_RELATIVE:
TclNewLiteralStringObj(typeName, "volumerelative");
break;
default:
return TCL_OK;
}
Tcl_SetObjResult(interp, typeName);
return TCL_OK;
}
case FCMD_READABLE:
if (objc != 3) {
goto only3Args;
}
return CheckAccess(interp, objv[2], R_OK);
case FCMD_READLINK: {
Tcl_Obj *contents;
if (objc != 3) {
goto only3Args;
}
if (Tcl_FSConvertToPathType(interp, objv[2]) != TCL_OK) {
return TCL_ERROR;
}
contents = Tcl_FSLink(objv[2], NULL, 0);
if (contents == NULL) {
Tcl_AppendResult(interp, "could not readlink \"",
TclGetString(objv[2]), "\": ", Tcl_PosixError(interp),
NULL);
return TCL_ERROR;
}
Tcl_SetObjResult(interp, contents);
Tcl_DecrRefCount(contents);
return TCL_OK;
}
case FCMD_RENAME:
return TclFileRenameCmd(interp, objc, objv);
case FCMD_ROOTNAME: {
Tcl_Obj *root;
if (objc != 3) {
goto only3Args;
}
root = TclPathPart(interp, objv[2], TCL_PATH_ROOT);
if (root != NULL) {
Tcl_SetObjResult(interp, root);
Tcl_DecrRefCount(root);
return TCL_OK;
} else {
return TCL_ERROR;
}
}
case FCMD_SEPARATOR:
if ((objc < 2) || (objc > 3)) {
Tcl_WrongNumArgs(interp, 2, objv, "?name?");
return TCL_ERROR;
}
if (objc == 2) {
char *separator = NULL; /* lint */
switch (tclPlatform) {
case TCL_PLATFORM_UNIX:
separator = "/";
break;
case TCL_PLATFORM_WINDOWS:
separator = "\\";
break;
}
Tcl_SetObjResult(interp, Tcl_NewStringObj(separator, 1));
} else {
Tcl_Obj *separatorObj = Tcl_FSPathSeparator(objv[2]);
if (separatorObj == NULL) {
Tcl_SetResult(interp, "Unrecognised path", TCL_STATIC);
return TCL_ERROR;
}
Tcl_SetObjResult(interp, separatorObj);
}
return TCL_OK;
case FCMD_SPLIT: {
Tcl_Obj *res;
if (objc != 3) {
goto only3Args;
}
res = Tcl_FSSplitPath(objv[2], NULL);
if (res == NULL) {
/* How can the interp be NULL here?! DKF */
if (interp != NULL) {
Tcl_AppendResult(interp, "could not read \"",
TclGetString(objv[2]),
"\": no such file or directory", NULL);
}
return TCL_ERROR;
}
Tcl_SetObjResult(interp, res);
return TCL_OK;
}
case FCMD_SYSTEM: {
Tcl_Obj *fsInfo;
if (objc != 3) {
goto only3Args;
}
fsInfo = Tcl_FSFileSystemInfo(objv[2]);
if (fsInfo == NULL) {
Tcl_SetResult(interp, "Unrecognised path", TCL_STATIC);
return TCL_ERROR;
}
Tcl_SetObjResult(interp, fsInfo);
return TCL_OK;
}
case FCMD_TAIL: {
Tcl_Obj *dirPtr;
if (objc != 3) {
goto only3Args;
}
dirPtr = TclPathPart(interp, objv[2], TCL_PATH_TAIL);
if (dirPtr == NULL) {
return TCL_ERROR;
}
Tcl_SetObjResult(interp, dirPtr);
Tcl_DecrRefCount(dirPtr);
return TCL_OK;
}
case FCMD_VOLUMES:
if (objc != 2) {
Tcl_WrongNumArgs(interp, 2, objv, NULL);
return TCL_ERROR;
}
Tcl_SetObjResult(interp, Tcl_FSListVolumes());
return TCL_OK;
case FCMD_WRITABLE:
if (objc != 3) {
goto only3Args;
}
return CheckAccess(interp, objv[2], W_OK);
}
only3Args:
Tcl_WrongNumArgs(interp, 2, objv, "name");
return TCL_ERROR;
}
/*
*---------------------------------------------------------------------------
*
* CheckAccess --
*
* Utility procedure used by Tcl_FileObjCmd() to query file attributes
* available through the access() system call.
*
* Results:
* Always returns TCL_OK. Sets interp's result to boolean true or false
* depending on whether the file has the specified attribute.
*
* Side effects:
* None.
*
*---------------------------------------------------------------------------
*/
static int
CheckAccess(
Tcl_Interp *interp, /* Interp for status return. Must not be
* NULL. */
Tcl_Obj *pathPtr, /* Name of file to check. */
int mode) /* Attribute to check; passed as argument to
* access(). */
{
int value;
if (Tcl_FSConvertToPathType(interp, pathPtr) != TCL_OK) {
value = 0;
} else {
value = (Tcl_FSAccess(pathPtr, mode) == 0);
}
Tcl_SetObjResult(interp, Tcl_NewBooleanObj(value));
return TCL_OK;
}
/*
*---------------------------------------------------------------------------
*
* GetStatBuf --
*
* Utility procedure used by Tcl_FileObjCmd() to query file attributes
* available through the stat() or lstat() system call.
*
* Results:
* The return value is TCL_OK if the specified file exists and can be
* stat'ed, TCL_ERROR otherwise. If TCL_ERROR is returned, an error
* message is left in interp's result. If TCL_OK is returned, *statPtr is
* filled with information about the specified file.
*
* Side effects:
* None.
*
*---------------------------------------------------------------------------
*/
static int
GetStatBuf(
Tcl_Interp *interp, /* Interp for error return. May be NULL. */
Tcl_Obj *pathPtr, /* Path name to examine. */
Tcl_FSStatProc *statProc, /* Either stat() or lstat() depending on
* desired behavior. */
Tcl_StatBuf *statPtr) /* Filled with info about file obtained by
* calling (*statProc)(). */
{
int status;
if (Tcl_FSConvertToPathType(interp, pathPtr) != TCL_OK) {
return TCL_ERROR;
}
status = (*statProc)(pathPtr, statPtr);
if (status < 0) {
if (interp != NULL) {
Tcl_AppendResult(interp, "could not read \"",
TclGetString(pathPtr), "\": ",
Tcl_PosixError(interp), NULL);
}
return TCL_ERROR;
}
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* StoreStatData --
*
* This is a utility procedure that breaks out the fields of a "stat"
* structure and stores them in textual form into the elements of an
* associative array.
*
* Results:
* Returns a standard Tcl return value. If an error occurs then a message
* is left in interp's result.
*
* Side effects:
* Elements of the associative array given by "varName" are modified.
*
*----------------------------------------------------------------------
*/
static int
StoreStatData(
Tcl_Interp *interp, /* Interpreter for error reports. */
Tcl_Obj *varName, /* Name of associative array variable in which
* to store stat results. */
Tcl_StatBuf *statPtr) /* Pointer to buffer containing stat data to
* store in varName. */
{
Tcl_Obj *field, *value;
register unsigned short mode;
/*
* Assume Tcl_ObjSetVar2() does not keep a copy of the field name!
*
* Might be a better idea to call Tcl_SetVar2Ex() instead, except we want
* to have an object (i.e. possibly cached) array variable name but a
* string element name, so no API exists. Messy.
*/
#define STORE_ARY(fieldName, object) \
TclNewLiteralStringObj(field, fieldName); \
Tcl_IncrRefCount(field); \
value = (object); \
if (Tcl_ObjSetVar2(interp,varName,field,value,TCL_LEAVE_ERR_MSG)==NULL) { \
TclDecrRefCount(field); \
return TCL_ERROR; \
} \
TclDecrRefCount(field);
/*
* Watch out porters; the inode is meant to be an *unsigned* value, so the
* cast might fail when there isn't a real arithmentic 'long long' type...
*/
STORE_ARY("dev", Tcl_NewLongObj((long)statPtr->st_dev));
STORE_ARY("ino", Tcl_NewWideIntObj((Tcl_WideInt)statPtr->st_ino));
STORE_ARY("nlink", Tcl_NewLongObj((long)statPtr->st_nlink));
STORE_ARY("uid", Tcl_NewLongObj((long)statPtr->st_uid));
STORE_ARY("gid", Tcl_NewLongObj((long)statPtr->st_gid));
STORE_ARY("size", Tcl_NewWideIntObj((Tcl_WideInt)statPtr->st_size));
#ifdef HAVE_STRUCT_STAT_ST_BLOCKS
STORE_ARY("blocks", Tcl_NewWideIntObj((Tcl_WideInt)statPtr->st_blocks));
#endif
#ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
STORE_ARY("blksize", Tcl_NewLongObj((long)statPtr->st_blksize));
#endif
STORE_ARY("atime", Tcl_NewLongObj((long)statPtr->st_atime));
STORE_ARY("mtime", Tcl_NewLongObj((long)statPtr->st_mtime));
STORE_ARY("ctime", Tcl_NewLongObj((long)statPtr->st_ctime));
mode = (unsigned short) statPtr->st_mode;
STORE_ARY("mode", Tcl_NewIntObj(mode));
STORE_ARY("type", Tcl_NewStringObj(GetTypeFromMode(mode), -1));
#undef STORE_ARY
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* GetTypeFromMode --
*
* Given a mode word, returns a string identifying the type of a file.
*
* Results:
* A static text string giving the file type from mode.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static char *
GetTypeFromMode(
int mode)
{
if (S_ISREG(mode)) {
return "file";
} else if (S_ISDIR(mode)) {
return "directory";
} else if (S_ISCHR(mode)) {
return "characterSpecial";
} else if (S_ISBLK(mode)) {
return "blockSpecial";
} else if (S_ISFIFO(mode)) {
return "fifo";
#ifdef S_ISLNK
} else if (S_ISLNK(mode)) {
return "link";
#endif
#ifdef S_ISSOCK
} else if (S_ISSOCK(mode)) {
return "socket";
#endif
}
return "unknown";
}
/*
*----------------------------------------------------------------------
*
* Tcl_ForObjCmd --
*
* This procedure is invoked to process the "for" Tcl command. See the
* user documentation for details on what it does.
*
* With the bytecode compiler, this procedure is only called when a
* command name is computed at runtime, and is "for" or the name to which
* "for" was renamed: e.g.,
* "set z for; $z {set i 0} {$i<100} {incr i} {puts $i}"
*
* Results:
* A standard Tcl result.
*
* Side effects:
* See the user documentation.
*
*----------------------------------------------------------------------
*/
/* ARGSUSED */
int
Tcl_ForObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *CONST objv[]) /* Argument objects. */
{
int result, value;
Interp *iPtr = (Interp *) interp;
if (objc != 5) {
Tcl_WrongNumArgs(interp, 1, objv, "start test next command");
return TCL_ERROR;
}
/*
* TIP #280. Make invoking context available to initial script.
*/
result = TclEvalObjEx(interp, objv[1], 0, iPtr->cmdFramePtr, 1);
if (result != TCL_OK) {
if (result == TCL_ERROR) {
Tcl_AddErrorInfo(interp, "\n (\"for\" initial command)");
}
return result;
}
while (1) {
/*
* We need to reset the result before passing it off to
* Tcl_ExprBooleanObj. Otherwise, any error message will be appended
* to the result of the last evaluation.
*/
Tcl_ResetResult(interp);
result = Tcl_ExprBooleanObj(interp, objv[2], &value);
if (result != TCL_OK) {
return result;
}
if (!value) {
break;
}
/*
* TIP #280. Make invoking context available to loop body.
*/
result = TclEvalObjEx(interp, objv[4], 0, iPtr->cmdFramePtr, 4);
if ((result != TCL_OK) && (result != TCL_CONTINUE)) {
if (result == TCL_ERROR) {
Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
"\n (\"for\" body line %d)", interp->errorLine));
}
break;
}
/*
* TIP #280. Make invoking context available to next script.
*/
result = TclEvalObjEx(interp, objv[3], 0, iPtr->cmdFramePtr, 3);
if (result == TCL_BREAK) {
break;
} else if (result != TCL_OK) {
if (result == TCL_ERROR) {
Tcl_AddErrorInfo(interp, "\n (\"for\" loop-end command)");
}
return result;
}
}
if (result == TCL_BREAK) {
result = TCL_OK;
}
if (result == TCL_OK) {
Tcl_ResetResult(interp);
}
return result;
}
/*
*----------------------------------------------------------------------
*
* Tcl_ForeachObjCmd --
*
* This object-based procedure is invoked to process the "foreach" Tcl
* command. See the user documentation for details on what it does.
*
* Results:
* A standard Tcl object result.
*
* Side effects:
* See the user documentation.
*
*----------------------------------------------------------------------
*/
/* ARGSUSED */
int
Tcl_ForeachObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *CONST objv[]) /* Argument objects. */
{
int result = TCL_OK;
int i; /* i selects a value list */
int j, maxj; /* Number of loop iterations */
int v; /* v selects a loop variable */
int numLists = (objc-2)/2; /* Count of value lists */
Tcl_Obj *bodyPtr;
Interp *iPtr = (Interp *) interp;
int *index; /* Array of value list indices */
int *varcList; /* # loop variables per list */
Tcl_Obj ***varvList; /* Array of var name lists */
Tcl_Obj **vCopyList; /* Copies of var name list arguments */
int *argcList; /* Array of value list sizes */
Tcl_Obj ***argvList; /* Array of value lists */
Tcl_Obj **aCopyList; /* Copies of value list arguments */
if (objc < 4 || (objc%2 != 0)) {
Tcl_WrongNumArgs(interp, 1, objv,
"varList list ?varList list ...? command");
return TCL_ERROR;
}
/*
* Manage numList parallel value lists.
* argvList[i] is a value list counted by argcList[i]l;
* varvList[i] is the list of variables associated with the value list;
* varcList[i] is the number of variables associated with the value list;
* index[i] is the current pointer into the value list argvList[i].
*/
index = (int *) TclStackAlloc(interp, 3 * numLists * sizeof(int));
varcList = index + numLists;
argcList = varcList + numLists;
memset(index, 0, 3 * numLists * sizeof(int));
varvList = (Tcl_Obj ***)
TclStackAlloc(interp, 2 * numLists * sizeof(Tcl_Obj **));
argvList = varvList + numLists;
memset(varvList, 0, 2 * numLists * sizeof(Tcl_Obj **));
vCopyList = (Tcl_Obj **)
TclStackAlloc(interp, 2 * numLists * sizeof(Tcl_Obj *));
aCopyList = vCopyList + numLists;
memset(vCopyList, 0, 2 * numLists * sizeof(Tcl_Obj *));
/*
* Break up the value lists and variable lists into elements.
*/
maxj = 0;
for (i=0 ; i<numLists ; i++) {
vCopyList[i] = TclListObjCopy(interp, objv[1+i*2]);
if (vCopyList[i] == NULL) {
result = TCL_ERROR;
goto done;
}
TclListObjGetElements(NULL, vCopyList[i], &varcList[i], &varvList[i]);
if (varcList[i] < 1) {
Tcl_AppendResult(interp, "foreach varlist is empty", NULL);
result = TCL_ERROR;
goto done;
}
aCopyList[i] = TclListObjCopy(interp, objv[2+i*2]);
if (aCopyList[i] == NULL) {
result = TCL_ERROR;
goto done;
}
TclListObjGetElements(NULL, aCopyList[i], &argcList[i], &argvList[i]);
j = argcList[i] / varcList[i];
if ((argcList[i] % varcList[i]) != 0) {
j++;
}
if (j > maxj) {
maxj = j;
}
}
/*
* Iterate maxj times through the lists in parallel. If some value lists
* run out of values, set loop vars to ""
*/
bodyPtr = objv[objc-1];
for (j=0 ; j<maxj ; j++) {
for (i=0 ; i<numLists ; i++) {
for (v=0 ; v<varcList[i] ; v++) {
int k = index[i]++;
Tcl_Obj *valuePtr, *varValuePtr;
if (k < argcList[i]) {
valuePtr = argvList[i][k];
} else {
valuePtr = Tcl_NewObj(); /* Empty string */
}
varValuePtr = Tcl_ObjSetVar2(interp, varvList[i][v], NULL,
valuePtr, TCL_LEAVE_ERR_MSG);
if (varValuePtr == NULL) {
Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
"\n (setting foreach loop variable \"%s\")",
TclGetString(varvList[i][v])));
result = TCL_ERROR;
goto done;
}
}
}
/*
* TIP #280. Make invoking context available to loop body.
*/
result = TclEvalObjEx(interp, bodyPtr, 0, iPtr->cmdFramePtr, objc-1);
if (result != TCL_OK) {
if (result == TCL_CONTINUE) {
result = TCL_OK;
} else if (result == TCL_BREAK) {
result = TCL_OK;
break;
} else if (result == TCL_ERROR) {
Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
"\n (\"foreach\" body line %d)",
interp->errorLine));
break;
} else {
break;
}
}
}
if (result == TCL_OK) {
Tcl_ResetResult(interp);
}
done:
for (i=0 ; i<numLists ; i++) {
if (vCopyList[i]) {
Tcl_DecrRefCount(vCopyList[i]);
}
if (aCopyList[i]) {
Tcl_DecrRefCount(aCopyList[i]);
}
}
TclStackFree(interp, vCopyList); /* Tcl_Obj * arrays */
TclStackFree(interp, varvList); /* Tcl_Obj ** arrays */
TclStackFree(interp, index); /* int arrays */
return result;
}
/*
*----------------------------------------------------------------------
*
* Tcl_FormatObjCmd --
*
* This procedure is invoked to process the "format" Tcl command. See
* the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* See the user documentation.
*
*----------------------------------------------------------------------
*/
/* ARGSUSED */
int
Tcl_FormatObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *CONST objv[]) /* Argument objects. */
{
Tcl_Obj *resultPtr; /* Where result is stored finally. */
if (objc < 2) {
Tcl_WrongNumArgs(interp, 1, objv, "formatString ?arg arg ...?");
return TCL_ERROR;
}
resultPtr = Tcl_Format(interp, TclGetString(objv[1]), objc-2, objv+2);
if (resultPtr == NULL) {
return TCL_ERROR;
}
Tcl_SetObjResult(interp, resultPtr);
return TCL_OK;
}
/*
* Local Variables:
* mode: c
* c-basic-offset: 4
* fill-column: 78
* End:
*/
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