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OpenFPGA/libs/EXTERNAL/tcl8.6.12/generic/tclCmdAH.c

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/*
* 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.
*/
#include "tclInt.h"
#ifdef _WIN32
# include "tclWinInt.h"
#endif
#include <locale.h>
/*
* The state structure used by [foreach]. Note that the actual structure has
* all its working arrays appended afterwards so they can be allocated and
* freed in a single step.
*/
struct ForeachState {
Tcl_Obj *bodyPtr; /* The script body of the command. */
int bodyIdx; /* The argument index of the body. */
int j, maxj; /* Number of loop iterations. */
int numLists; /* Count of value lists. */
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. */
Tcl_Obj *resultList; /* List of result values from the loop body,
* or NULL if we're not collecting them
* ([lmap] vs [foreach]). */
};
/*
* Prototypes for local procedures defined in this file:
*/
static int CheckAccess(Tcl_Interp *interp, Tcl_Obj *pathPtr,
int mode);
static int BadEncodingSubcommand(ClientData dummy,
Tcl_Interp *interp, int objc,
Tcl_Obj *const objv[]);
static int EncodingConvertfromObjCmd(ClientData dummy,
Tcl_Interp *interp, int objc,
Tcl_Obj *const objv[]);
static int EncodingConverttoObjCmd(ClientData dummy,
Tcl_Interp *interp, int objc,
Tcl_Obj *const objv[]);
static int EncodingDirsObjCmd(ClientData dummy,
Tcl_Interp *interp, int objc,
Tcl_Obj *const objv[]);
static int EncodingNamesObjCmd(ClientData dummy,
Tcl_Interp *interp, int objc,
Tcl_Obj *const objv[]);
static int EncodingSystemObjCmd(ClientData dummy,
Tcl_Interp *interp, int objc,
Tcl_Obj *const objv[]);
static inline int ForeachAssignments(Tcl_Interp *interp,
struct ForeachState *statePtr);
static inline void ForeachCleanup(Tcl_Interp *interp,
struct ForeachState *statePtr);
static int GetStatBuf(Tcl_Interp *interp, Tcl_Obj *pathPtr,
Tcl_FSStatProc *statProc, Tcl_StatBuf *statPtr);
static const char * GetTypeFromMode(int mode);
static int StoreStatData(Tcl_Interp *interp, Tcl_Obj *varName,
Tcl_StatBuf *statPtr);
static inline int EachloopCmd(Tcl_Interp *interp, int collect,
int objc, Tcl_Obj *const objv[]);
static Tcl_NRPostProc CatchObjCmdCallback;
static Tcl_NRPostProc ExprCallback;
static Tcl_NRPostProc ForSetupCallback;
static Tcl_NRPostProc ForCondCallback;
static Tcl_NRPostProc ForNextCallback;
static Tcl_NRPostProc ForPostNextCallback;
static Tcl_NRPostProc ForeachLoopStep;
static Tcl_NRPostProc EvalCmdErrMsg;
static Tcl_ObjCmdProc BadFileSubcommand;
static Tcl_ObjCmdProc FileAttrAccessTimeCmd;
static Tcl_ObjCmdProc FileAttrIsDirectoryCmd;
static Tcl_ObjCmdProc FileAttrIsExecutableCmd;
static Tcl_ObjCmdProc FileAttrIsExistingCmd;
static Tcl_ObjCmdProc FileAttrIsFileCmd;
static Tcl_ObjCmdProc FileAttrIsOwnedCmd;
static Tcl_ObjCmdProc FileAttrIsReadableCmd;
static Tcl_ObjCmdProc FileAttrIsWritableCmd;
static Tcl_ObjCmdProc FileAttrLinkStatCmd;
static Tcl_ObjCmdProc FileAttrModifyTimeCmd;
static Tcl_ObjCmdProc FileAttrSizeCmd;
static Tcl_ObjCmdProc FileAttrStatCmd;
static Tcl_ObjCmdProc FileAttrTypeCmd;
static Tcl_ObjCmdProc FilesystemSeparatorCmd;
static Tcl_ObjCmdProc FilesystemVolumesCmd;
static Tcl_ObjCmdProc PathDirNameCmd;
static Tcl_ObjCmdProc PathExtensionCmd;
static Tcl_ObjCmdProc PathFilesystemCmd;
static Tcl_ObjCmdProc PathJoinCmd;
static Tcl_ObjCmdProc PathNativeNameCmd;
static Tcl_ObjCmdProc PathNormalizeCmd;
static Tcl_ObjCmdProc PathRootNameCmd;
static Tcl_ObjCmdProc PathSplitCmd;
static Tcl_ObjCmdProc PathTailCmd;
static Tcl_ObjCmdProc PathTypeCmd;
/*
*----------------------------------------------------------------------
*
* 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. */
{
int i;
int body, result, caseObjc;
const char *stringPtr, *arg;
Tcl_Obj *const *caseObjv;
Tcl_Obj *armPtr;
if (objc < 3) {
Tcl_WrongNumArgs(interp, 1, objv,
"string ?in? ?pattern 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;
const char *pat, *p;
if (i == caseObjc-1) {
Tcl_ResetResult(interp);
Tcl_SetObjResult(interp, Tcl_NewStringObj(
"extra case pattern with no body", -1));
return TCL_ERROR;
}
/*
* Check for special case of single pattern (no list) with no
* backslash sequences.
*/
pat = TclGetString(caseObjv[i]);
for (p = pat; *p != '\0'; p++) {
if (TclIsSpaceProcM(*p) || (*p == '\\')) {
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(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), Tcl_GetErrorLine(interp)));
}
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. */
{
return Tcl_NRCallObjProc(interp, TclNRCatchObjCmd, dummy, objc, objv);
}
int
TclNRCatchObjCmd(
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;
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];
}
TclNRAddCallback(interp, CatchObjCmdCallback, INT2PTR(objc),
varNamePtr, optionVarNamePtr, NULL);
/*
* TIP #280. Make invoking context available to caught script.
*/
return TclNREvalObjEx(interp, objv[1], 0, iPtr->cmdFramePtr, 1);
}
static int
CatchObjCmdCallback(
ClientData data[],
Tcl_Interp *interp,
int result)
{
Interp *iPtr = (Interp *) interp;
int objc = PTR2INT(data[0]);
Tcl_Obj *varNamePtr = data[1];
Tcl_Obj *optionVarNamePtr = data[2];
int rewind = iPtr->execEnvPtr->rewind;
/*
* We disable catch in interpreters where the limit has been exceeded.
*/
if (rewind || Tcl_LimitExceeded(interp)) {
Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
"\n (\"catch\" body line %d)", Tcl_GetErrorLine(interp)));
return TCL_ERROR;
}
if (objc >= 3) {
if (NULL == Tcl_ObjSetVar2(interp, varNamePtr, NULL,
Tcl_GetObjResult(interp), TCL_LEAVE_ERR_MSG)) {
return TCL_ERROR;
}
}
if (objc == 4) {
Tcl_Obj *options = Tcl_GetReturnOptions(interp, result);
if (NULL == Tcl_ObjSetVar2(interp, optionVarNamePtr, NULL,
options, TCL_LEAVE_ERR_MSG)) {
/* Do not decrRefCount 'options', it was already done by
* Tcl_ObjSetVar2 */
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_SetObjResult(interp, Tcl_ObjPrintf(
"couldn't change working directory to \"%s\": %s",
TclGetString(dir), Tcl_PosixError(interp)));
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;
}
/*
*-----------------------------------------------------------------------------
*
* TclInitEncodingCmd --
*
* This function creates the 'encoding' ensemble.
*
* Results:
* Returns the Tcl_Command so created.
*
* Side effects:
* The ensemble is initialized.
*
* This command is hidden in a safe interpreter.
*/
Tcl_Command
TclInitEncodingCmd(
Tcl_Interp* interp) /* Tcl interpreter */
{
static const EnsembleImplMap encodingImplMap[] = {
{"convertfrom", EncodingConvertfromObjCmd, TclCompileBasic1Or2ArgCmd, NULL, NULL, 0},
{"convertto", EncodingConverttoObjCmd, TclCompileBasic1Or2ArgCmd, NULL, NULL, 0},
{"dirs", EncodingDirsObjCmd, TclCompileBasic0Or1ArgCmd, NULL, NULL, 0},
{"names", EncodingNamesObjCmd, TclCompileBasic0ArgCmd, NULL, NULL, 0},
{"system", EncodingSystemObjCmd, TclCompileBasic0Or1ArgCmd, NULL, NULL, 0},
{NULL, NULL, NULL, NULL, NULL, 0}
};
return TclMakeEnsemble(interp, "encoding", encodingImplMap);
}
/*
*-----------------------------------------------------------------------------
*
* TclMakeEncodingCommandSafe --
*
* This function hides the unsafe 'dirs' and 'system' subcommands of
* the "encoding" Tcl command ensemble. It must be called only from
* TclHideUnsafeCommands.
*
* Results:
* A standard Tcl result
*
* Side effects:
* Adds commands to the table of hidden commands.
*
*-----------------------------------------------------------------------------
*/
int
TclMakeEncodingCommandSafe(
Tcl_Interp* interp) /* Tcl interpreter */
{
static const struct {
const char *cmdName;
int unsafe;
} unsafeInfo[] = {
{"convertfrom", 0},
{"convertto", 0},
{"dirs", 1},
{"names", 0},
{"system", 0},
{NULL, 0}
};
int i;
Tcl_DString oldBuf, newBuf;
Tcl_DStringInit(&oldBuf);
TclDStringAppendLiteral(&oldBuf, "::tcl::encoding::");
Tcl_DStringInit(&newBuf);
TclDStringAppendLiteral(&newBuf, "tcl:encoding:");
for (i=0 ; unsafeInfo[i].cmdName != NULL ; i++) {
if (unsafeInfo[i].unsafe) {
const char *oldName, *newName;
Tcl_DStringSetLength(&oldBuf, 17);
oldName = Tcl_DStringAppend(&oldBuf, unsafeInfo[i].cmdName, -1);
Tcl_DStringSetLength(&newBuf, 13);
newName = Tcl_DStringAppend(&newBuf, unsafeInfo[i].cmdName, -1);
if (TclRenameCommand(interp, oldName, "___tmp") != TCL_OK
|| Tcl_HideCommand(interp, "___tmp", newName) != TCL_OK) {
Tcl_Panic("problem making 'encoding %s' safe: %s",
unsafeInfo[i].cmdName,
Tcl_GetString(Tcl_GetObjResult(interp)));
}
Tcl_CreateObjCommand(interp, oldName, BadEncodingSubcommand,
(ClientData) unsafeInfo[i].cmdName, NULL);
}
}
Tcl_DStringFree(&oldBuf);
Tcl_DStringFree(&newBuf);
/*
* Ugh. The [encoding] command is now actually safe, but it is assumed by
* scripts that it is not, which messes up security policies.
*/
if (Tcl_HideCommand(interp, "encoding", "encoding") != TCL_OK) {
Tcl_Panic("problem making 'encoding' safe: %s",
Tcl_GetString(Tcl_GetObjResult(interp)));
}
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* BadEncodingSubcommand --
*
* Command used to act as a backstop implementation when subcommands of
* "encoding" are unsafe (the real implementations of the subcommands are
* hidden). The clientData is always the full official subcommand name.
*
* Results:
* A standard Tcl result (always a TCL_ERROR).
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
BadEncodingSubcommand(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
const char *subcommandName = (const char *) clientData;
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"not allowed to invoke subcommand %s of encoding", subcommandName));
Tcl_SetErrorCode(interp, "TCL", "SAFE", "SUBCOMMAND", NULL);
return TCL_ERROR;
}
/*
*----------------------------------------------------------------------
*
* EncodingConvertfromObjCmd --
*
* This command converts a byte array in an external encoding into a
* Tcl string
*
* Results:
* A standard Tcl result.
*
*----------------------------------------------------------------------
*/
int
EncodingConvertfromObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *const objv[]) /* Argument objects. */
{
Tcl_Obj *data; /* Byte array to convert */
Tcl_DString ds; /* Buffer to hold the string */
Tcl_Encoding encoding; /* Encoding to use */
int length; /* Length of the byte array being converted */
const char *bytesPtr; /* Pointer to the first byte of the array */
if (objc == 2) {
encoding = Tcl_GetEncoding(interp, NULL);
data = objv[1];
} else if (objc == 3) {
if (Tcl_GetEncodingFromObj(interp, objv[1], &encoding) != TCL_OK) {
return TCL_ERROR;
}
data = objv[2];
} else {
Tcl_WrongNumArgs(interp, 1, objv, "?encoding? data");
return TCL_ERROR;
}
/*
* Convert the string into a byte array in 'ds'
*/
bytesPtr = (char *) Tcl_GetByteArrayFromObj(data, &length);
Tcl_ExternalToUtfDString(encoding, bytesPtr, length, &ds);
/*
* Note that we cannot use Tcl_DStringResult here because it will
* truncate the string at the first null byte.
*/
Tcl_SetObjResult(interp, TclDStringToObj(&ds));
/*
* We're done with the encoding
*/
Tcl_FreeEncoding(encoding);
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* EncodingConverttoObjCmd --
*
* This command converts a Tcl string into a byte array that
* encodes the string according to some encoding.
*
* Results:
* A standard Tcl result.
*
*----------------------------------------------------------------------
*/
int
EncodingConverttoObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *const objv[]) /* Argument objects. */
{
Tcl_Obj *data; /* String to convert */
Tcl_DString ds; /* Buffer to hold the byte array */
Tcl_Encoding encoding; /* Encoding to use */
int length; /* Length of the string being converted */
const char *stringPtr; /* Pointer to the first byte of the string */
if (objc == 2) {
encoding = Tcl_GetEncoding(interp, NULL);
data = objv[1];
} else if (objc == 3) {
if (Tcl_GetEncodingFromObj(interp, objv[1], &encoding) != TCL_OK) {
return TCL_ERROR;
}
data = objv[2];
} else {
Tcl_WrongNumArgs(interp, 1, objv, "?encoding? data");
return TCL_ERROR;
}
/*
* Convert the string to a byte array in 'ds'
*/
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);
/*
* We're done with the encoding
*/
Tcl_FreeEncoding(encoding);
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. */
{
Tcl_Obj *dirListObj;
if (objc > 2) {
Tcl_WrongNumArgs(interp, 1, objv, "?dirList?");
return TCL_ERROR;
}
if (objc == 1) {
Tcl_SetObjResult(interp, Tcl_GetEncodingSearchPath());
return TCL_OK;
}
dirListObj = objv[1];
if (Tcl_SetEncodingSearchPath(dirListObj) == TCL_ERROR) {
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"expected directory list but got \"%s\"",
TclGetString(dirListObj)));
Tcl_SetErrorCode(interp, "TCL", "OPERATION", "ENCODING", "BADPATH",
NULL);
return TCL_ERROR;
}
Tcl_SetObjResult(interp, dirListObj);
return TCL_OK;
}
/*
*-----------------------------------------------------------------------------
*
* EncodingNamesObjCmd --
*
* This command returns a list of the available encoding names
*
* Results:
* Returns a standard Tcl result
*
*-----------------------------------------------------------------------------
*/
int
EncodingNamesObjCmd(ClientData dummy, /* Unused */
Tcl_Interp* interp, /* Tcl interpreter */
int objc, /* Number of command line args */
Tcl_Obj* const objv[]) /* Vector of command line args */
{
if (objc > 1) {
Tcl_WrongNumArgs(interp, 1, objv, NULL);
return TCL_ERROR;
}
Tcl_GetEncodingNames(interp);
return TCL_OK;
}
/*
*-----------------------------------------------------------------------------
*
* EncodingSystemObjCmd --
*
* This command retrieves or changes the system encoding
*
* Results:
* Returns a standard Tcl result
*
* Side effects:
* May change the system encoding.
*
*-----------------------------------------------------------------------------
*/
int
EncodingSystemObjCmd(ClientData dummy, /* Unused */
Tcl_Interp* interp, /* Tcl interpreter */
int objc, /* Number of command line args */
Tcl_Obj* const objv[]) /* Vector of command line args */
{
if (objc > 2) {
Tcl_WrongNumArgs(interp, 1, objv, "?encoding?");
return TCL_ERROR;
}
if (objc == 1) {
Tcl_SetObjResult(interp,
Tcl_NewStringObj(Tcl_GetEncodingName(NULL), -1));
} else {
return Tcl_SetSystemEncoding(interp, TclGetString(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 */
static int
EvalCmdErrMsg(
ClientData data[],
Tcl_Interp *interp,
int result)
{
if (result == TCL_ERROR) {
Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
"\n (\"eval\" body line %d)", Tcl_GetErrorLine(interp)));
}
return result;
}
int
Tcl_EvalObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *const objv[]) /* Argument objects. */
{
return Tcl_NRCallObjProc(interp, TclNREvalObjCmd, dummy, objc, objv);
}
int
TclNREvalObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *const objv[]) /* Argument objects. */
{
Tcl_Obj *objPtr;
Interp *iPtr = (Interp *) interp;
CmdFrame *invoker = NULL;
int word = 0;
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.
*/
invoker = iPtr->cmdFramePtr;
word = 1;
objPtr = objv[1];
TclArgumentGet(interp, objPtr, &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.
*
* TIP #280. Make invoking context available to eval'd script, done
* with the default values.
*/
objPtr = Tcl_ConcatObj(objc-1, objv+1);
}
TclNRAddCallback(interp, EvalCmdErrMsg, NULL, NULL, NULL, NULL);
return TclNREvalObjEx(interp, objPtr, 0, invoker, word);
}
/*
*----------------------------------------------------------------------
*
* 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. */
{
return Tcl_NRCallObjProc(interp, TclNRExprObjCmd, dummy, objc, objv);
}
int
TclNRExprObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *const objv[]) /* Argument objects. */
{
Tcl_Obj *resultPtr, *objPtr;
if (objc < 2) {
Tcl_WrongNumArgs(interp, 1, objv, "arg ?arg ...?");
return TCL_ERROR;
}
TclNewObj(resultPtr);
Tcl_IncrRefCount(resultPtr);
if (objc == 2) {
objPtr = objv[1];
TclNRAddCallback(interp, ExprCallback, resultPtr, NULL, NULL, NULL);
} else {
objPtr = Tcl_ConcatObj(objc-1, objv+1);
TclNRAddCallback(interp, ExprCallback, resultPtr, objPtr, NULL, NULL);
}
return Tcl_NRExprObj(interp, objPtr, resultPtr);
}
static int
ExprCallback(
ClientData data[],
Tcl_Interp *interp,
int result)
{
Tcl_Obj *resultPtr = data[0];
Tcl_Obj *objPtr = data[1];
if (objPtr != NULL) {
Tcl_DecrRefCount(objPtr);
}
if (result == TCL_OK) {
Tcl_SetObjResult(interp, resultPtr);
}
Tcl_DecrRefCount(resultPtr);
return result;
}
/*
*----------------------------------------------------------------------
*
* TclInitFileCmd --
*
* This function builds the "file" Tcl command ensemble. See the user
* documentation for details on what that ensemble 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.
*
*----------------------------------------------------------------------
*/
Tcl_Command
TclInitFileCmd(
Tcl_Interp *interp)
{
/*
* Note that most subcommands are unsafe because either they manipulate
* the native filesystem or because they reveal information about the
* native filesystem.
*/
static const EnsembleImplMap initMap[] = {
{"atime", FileAttrAccessTimeCmd, TclCompileBasic1Or2ArgCmd, NULL, NULL, 0},
{"attributes", TclFileAttrsCmd, NULL, NULL, NULL, 0},
{"channels", TclChannelNamesCmd, TclCompileBasic0Or1ArgCmd, NULL, NULL, 0},
{"copy", TclFileCopyCmd, NULL, NULL, NULL, 0},
{"delete", TclFileDeleteCmd, TclCompileBasicMin0ArgCmd, NULL, NULL, 0},
{"dirname", PathDirNameCmd, TclCompileBasic1ArgCmd, NULL, NULL, 0},
{"executable", FileAttrIsExecutableCmd, TclCompileBasic1ArgCmd, NULL, NULL, 0},
{"exists", FileAttrIsExistingCmd, TclCompileBasic1ArgCmd, NULL, NULL, 0},
{"extension", PathExtensionCmd, TclCompileBasic1ArgCmd, NULL, NULL, 0},
{"isdirectory", FileAttrIsDirectoryCmd, TclCompileBasic1ArgCmd, NULL, NULL, 0},
{"isfile", FileAttrIsFileCmd, TclCompileBasic1ArgCmd, NULL, NULL, 0},
{"join", PathJoinCmd, TclCompileBasicMin1ArgCmd, NULL, NULL, 0},
{"link", TclFileLinkCmd, TclCompileBasic1To3ArgCmd, NULL, NULL, 0},
{"lstat", FileAttrLinkStatCmd, TclCompileBasic2ArgCmd, NULL, NULL, 0},
{"mtime", FileAttrModifyTimeCmd, TclCompileBasic1Or2ArgCmd, NULL, NULL, 0},
{"mkdir", TclFileMakeDirsCmd, TclCompileBasicMin0ArgCmd, NULL, NULL, 0},
{"nativename", PathNativeNameCmd, TclCompileBasic1ArgCmd, NULL, NULL, 0},
{"normalize", PathNormalizeCmd, TclCompileBasic1ArgCmd, NULL, NULL, 0},
{"owned", FileAttrIsOwnedCmd, TclCompileBasic1ArgCmd, NULL, NULL, 0},
{"pathtype", PathTypeCmd, TclCompileBasic1ArgCmd, NULL, NULL, 0},
{"readable", FileAttrIsReadableCmd, TclCompileBasic1ArgCmd, NULL, NULL, 0},
{"readlink", TclFileReadLinkCmd, TclCompileBasic1ArgCmd, NULL, NULL, 0},
{"rename", TclFileRenameCmd, NULL, NULL, NULL, 0},
{"rootname", PathRootNameCmd, TclCompileBasic1ArgCmd, NULL, NULL, 0},
{"separator", FilesystemSeparatorCmd, TclCompileBasic0Or1ArgCmd, NULL, NULL, 0},
{"size", FileAttrSizeCmd, TclCompileBasic1ArgCmd, NULL, NULL, 0},
{"split", PathSplitCmd, TclCompileBasic1ArgCmd, NULL, NULL, 0},
{"stat", FileAttrStatCmd, TclCompileBasic2ArgCmd, NULL, NULL, 0},
{"system", PathFilesystemCmd, TclCompileBasic0Or1ArgCmd, NULL, NULL, 0},
{"tail", PathTailCmd, TclCompileBasic1ArgCmd, NULL, NULL, 0},
{"tempfile", TclFileTemporaryCmd, TclCompileBasic0To2ArgCmd, NULL, NULL, 0},
{"type", FileAttrTypeCmd, TclCompileBasic1ArgCmd, NULL, NULL, 0},
{"volumes", FilesystemVolumesCmd, TclCompileBasic0ArgCmd, NULL, NULL, 0},
{"writable", FileAttrIsWritableCmd, TclCompileBasic1ArgCmd, NULL, NULL, 0},
{NULL, NULL, NULL, NULL, NULL, 0}
};
return TclMakeEnsemble(interp, "file", initMap);
}
/*
*----------------------------------------------------------------------
*
* TclMakeFileCommandSafe --
*
* This function hides the unsafe subcommands of the "file" Tcl command
* ensemble. It must only be called from TclHideUnsafeCommands.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* Adds commands to the table of hidden commands.
*
*----------------------------------------------------------------------
*/
int
TclMakeFileCommandSafe(
Tcl_Interp *interp)
{
static const struct {
const char *cmdName;
int unsafe;
} unsafeInfo[] = {
{"atime", 1},
{"attributes", 1},
{"channels", 0},
{"copy", 1},
{"delete", 1},
{"dirname", 1},
{"executable", 1},
{"exists", 1},
{"extension", 1},
{"isdirectory", 1},
{"isfile", 1},
{"join", 0},
{"link", 1},
{"lstat", 1},
{"mtime", 1},
{"mkdir", 1},
{"nativename", 1},
{"normalize", 1},
{"owned", 1},
{"pathtype", 0},
{"readable", 1},
{"readlink", 1},
{"rename", 1},
{"rootname", 1},
{"separator", 0},
{"size", 1},
{"split", 0},
{"stat", 1},
{"system", 0},
{"tail", 1},
{"tempfile", 1},
{"type", 1},
{"volumes", 1},
{"writable", 1},
{NULL, 0}
};
int i;
Tcl_DString oldBuf, newBuf;
Tcl_DStringInit(&oldBuf);
TclDStringAppendLiteral(&oldBuf, "::tcl::file::");
Tcl_DStringInit(&newBuf);
TclDStringAppendLiteral(&newBuf, "tcl:file:");
for (i=0 ; unsafeInfo[i].cmdName != NULL ; i++) {
if (unsafeInfo[i].unsafe) {
const char *oldName, *newName;
Tcl_DStringSetLength(&oldBuf, 13);
oldName = Tcl_DStringAppend(&oldBuf, unsafeInfo[i].cmdName, -1);
Tcl_DStringSetLength(&newBuf, 9);
newName = Tcl_DStringAppend(&newBuf, unsafeInfo[i].cmdName, -1);
if (TclRenameCommand(interp, oldName, "___tmp") != TCL_OK
|| Tcl_HideCommand(interp, "___tmp", newName) != TCL_OK) {
Tcl_Panic("problem making 'file %s' safe: %s",
unsafeInfo[i].cmdName,
Tcl_GetString(Tcl_GetObjResult(interp)));
}
Tcl_CreateObjCommand(interp, oldName, BadFileSubcommand,
(ClientData) unsafeInfo[i].cmdName, NULL);
}
}
Tcl_DStringFree(&oldBuf);
Tcl_DStringFree(&newBuf);
/*
* Ugh. The [file] command is now actually safe, but it is assumed by
* scripts that it is not, which messes up security policies. [Bug
* 3211758]
*/
if (Tcl_HideCommand(interp, "file", "file") != TCL_OK) {
Tcl_Panic("problem making 'file' safe: %s",
Tcl_GetString(Tcl_GetObjResult(interp)));
}
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* BadFileSubcommand --
*
* Command used to act as a backstop implementation when subcommands of
* "file" are unsafe (the real implementations of the subcommands are
* hidden). The clientData is always the full official subcommand name.
*
* Results:
* A standard Tcl result (always a TCL_ERROR).
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
BadFileSubcommand(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
const char *subcommandName = (const char *) clientData;
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"not allowed to invoke subcommand %s of file", subcommandName));
Tcl_SetErrorCode(interp, "TCL", "SAFE", "SUBCOMMAND", NULL);
return TCL_ERROR;
}
/*
*----------------------------------------------------------------------
*
* FileAttrAccessTimeCmd --
*
* This function is invoked to process the "file atime" Tcl command. See
* the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* May update the access time on the file, if requested by the user.
*
*----------------------------------------------------------------------
*/
static int
FileAttrAccessTimeCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
Tcl_StatBuf buf;
struct utimbuf tval;
if (objc < 2 || objc > 3) {
Tcl_WrongNumArgs(interp, 1, objv, "name ?time?");
return TCL_ERROR;
}
if (GetStatBuf(interp, objv[1], Tcl_FSStat, &buf) != TCL_OK) {
return TCL_ERROR;
}
#if defined(_WIN32)
/* We use a value of 0 to indicate the access time not available */
if (Tcl_GetAccessTimeFromStat(&buf) == 0) {
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"could not get access time for file \"%s\"",
TclGetString(objv[1])));
return TCL_ERROR;
}
#endif
if (objc == 3) {
Tcl_WideInt newTime;
if (Tcl_GetWideIntFromObj(interp, objv[2], &newTime) != TCL_OK) {
return TCL_ERROR;
}
tval.actime = newTime;
tval.modtime = Tcl_GetModificationTimeFromStat(&buf);
if (Tcl_FSUtime(objv[1], &tval) != 0) {
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"could not set access time for file \"%s\": %s",
TclGetString(objv[1]), Tcl_PosixError(interp)));
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[1], Tcl_FSStat, &buf) != TCL_OK) {
return TCL_ERROR;
}
}
Tcl_SetObjResult(interp, Tcl_NewWideIntObj(Tcl_GetAccessTimeFromStat(&buf)));
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* FileAttrModifyTimeCmd --
*
* This function is invoked to process the "file mtime" Tcl command. See
* the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* May update the modification time on the file, if requested by the
* user.
*
*----------------------------------------------------------------------
*/
static int
FileAttrModifyTimeCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
Tcl_StatBuf buf;
struct utimbuf tval;
if (objc < 2 || objc > 3) {
Tcl_WrongNumArgs(interp, 1, objv, "name ?time?");
return TCL_ERROR;
}
if (GetStatBuf(interp, objv[1], Tcl_FSStat, &buf) != TCL_OK) {
return TCL_ERROR;
}
#if defined(_WIN32)
/* We use a value of 0 to indicate the modification time not available */
if (Tcl_GetModificationTimeFromStat(&buf) == 0) {
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"could not get modification time for file \"%s\"",
TclGetString(objv[1])));
return TCL_ERROR;
}
#endif
if (objc == 3) {
/*
* Need separate variable for reading longs from an object on 64-bit
* platforms. [Bug 698146]
*/
Tcl_WideInt newTime;
if (Tcl_GetWideIntFromObj(interp, objv[2], &newTime) != TCL_OK) {
return TCL_ERROR;
}
tval.actime = Tcl_GetAccessTimeFromStat(&buf);
tval.modtime = newTime;
if (Tcl_FSUtime(objv[1], &tval) != 0) {
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"could not set modification time for file \"%s\": %s",
TclGetString(objv[1]), Tcl_PosixError(interp)));
return TCL_ERROR;
}
/*
* Do another stat to ensure that the we return the new recognized
* mtime - hopefully the same as the one we sent in.
*/
if (GetStatBuf(interp, objv[1], Tcl_FSStat, &buf) != TCL_OK) {
return TCL_ERROR;
}
}
Tcl_SetObjResult(interp, Tcl_NewWideIntObj(Tcl_GetModificationTimeFromStat(&buf)));
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* FileAttrLinkStatCmd --
*
* This function is invoked to process the "file lstat" Tcl command. See
* the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* Writes to an array named by the user.
*
*----------------------------------------------------------------------
*/
static int
FileAttrLinkStatCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
Tcl_StatBuf buf;
if (objc != 3) {
Tcl_WrongNumArgs(interp, 1, objv, "name varName");
return TCL_ERROR;
}
if (GetStatBuf(interp, objv[1], Tcl_FSLstat, &buf) != TCL_OK) {
return TCL_ERROR;
}
return StoreStatData(interp, objv[2], &buf);
}
/*
*----------------------------------------------------------------------
*
* FileAttrStatCmd --
*
* This function is invoked to process the "file stat" Tcl command. See
* the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* Writes to an array named by the user.
*
*----------------------------------------------------------------------
*/
static int
FileAttrStatCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
Tcl_StatBuf buf;
if (objc != 3) {
Tcl_WrongNumArgs(interp, 1, objv, "name varName");
return TCL_ERROR;
}
if (GetStatBuf(interp, objv[1], Tcl_FSStat, &buf) != TCL_OK) {
return TCL_ERROR;
}
return StoreStatData(interp, objv[2], &buf);
}
/*
*----------------------------------------------------------------------
*
* FileAttrTypeCmd --
*
* This function is invoked to process the "file type" Tcl command. See
* the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
FileAttrTypeCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
Tcl_StatBuf buf;
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "name");
return TCL_ERROR;
}
if (GetStatBuf(interp, objv[1], Tcl_FSLstat, &buf) != TCL_OK) {
return TCL_ERROR;
}
Tcl_SetObjResult(interp, Tcl_NewStringObj(
GetTypeFromMode((unsigned short) buf.st_mode), -1));
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* FileAttrSizeCmd --
*
* This function is invoked to process the "file size" Tcl command. See
* the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
FileAttrSizeCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
Tcl_StatBuf buf;
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "name");
return TCL_ERROR;
}
if (GetStatBuf(interp, objv[1], Tcl_FSStat, &buf) != TCL_OK) {
return TCL_ERROR;
}
Tcl_SetObjResult(interp, Tcl_NewWideIntObj((Tcl_WideInt) buf.st_size));
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* FileAttrIsDirectoryCmd --
*
* This function is invoked to process the "file isdirectory" Tcl
* command. See the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
FileAttrIsDirectoryCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
Tcl_StatBuf buf;
int value = 0;
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "name");
return TCL_ERROR;
}
if (GetStatBuf(NULL, objv[1], Tcl_FSStat, &buf) == TCL_OK) {
value = S_ISDIR(buf.st_mode);
}
Tcl_SetObjResult(interp, Tcl_NewBooleanObj(value));
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* FileAttrIsExecutableCmd --
*
* This function is invoked to process the "file executable" Tcl command.
* See the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
FileAttrIsExecutableCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "name");
return TCL_ERROR;
}
return CheckAccess(interp, objv[1], X_OK);
}
/*
*----------------------------------------------------------------------
*
* FileAttrIsExistingCmd --
*
* This function is invoked to process the "file exists" Tcl command. See
* the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
FileAttrIsExistingCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "name");
return TCL_ERROR;
}
return CheckAccess(interp, objv[1], F_OK);
}
/*
*----------------------------------------------------------------------
*
* FileAttrIsFileCmd --
*
* This function is invoked to process the "file isfile" Tcl command. See
* the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
FileAttrIsFileCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
Tcl_StatBuf buf;
int value = 0;
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "name");
return TCL_ERROR;
}
if (GetStatBuf(NULL, objv[1], Tcl_FSStat, &buf) == TCL_OK) {
value = S_ISREG(buf.st_mode);
}
Tcl_SetObjResult(interp, Tcl_NewBooleanObj(value));
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* FileAttrIsOwnedCmd --
*
* This function is invoked to process the "file owned" Tcl command. See
* the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
FileAttrIsOwnedCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
#ifdef __CYGWIN__
#define geteuid() (short)(geteuid)()
#endif
#if !defined(_WIN32)
Tcl_StatBuf buf;
#endif
int value = 0;
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "name");
return TCL_ERROR;
}
#if defined(_WIN32)
value = TclWinFileOwned(objv[1]);
#else
if (GetStatBuf(NULL, objv[1], Tcl_FSStat, &buf) == TCL_OK) {
value = (geteuid() == buf.st_uid);
}
#endif
Tcl_SetObjResult(interp, Tcl_NewBooleanObj(value));
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* FileAttrIsReadableCmd --
*
* This function is invoked to process the "file readable" Tcl command.
* See the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
FileAttrIsReadableCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "name");
return TCL_ERROR;
}
return CheckAccess(interp, objv[1], R_OK);
}
/*
*----------------------------------------------------------------------
*
* FileAttrIsWritableCmd --
*
* This function is invoked to process the "file writable" Tcl command.
* See the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
FileAttrIsWritableCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "name");
return TCL_ERROR;
}
return CheckAccess(interp, objv[1], W_OK);
}
/*
*----------------------------------------------------------------------
*
* PathDirNameCmd --
*
* This function is invoked to process the "file dirname" Tcl command.
* See the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
PathDirNameCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
Tcl_Obj *dirPtr;
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "name");
return TCL_ERROR;
}
dirPtr = TclPathPart(interp, objv[1], TCL_PATH_DIRNAME);
if (dirPtr == NULL) {
return TCL_ERROR;
}
Tcl_SetObjResult(interp, dirPtr);
Tcl_DecrRefCount(dirPtr);
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* PathExtensionCmd --
*
* This function is invoked to process the "file extension" Tcl command.
* See the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
PathExtensionCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
Tcl_Obj *dirPtr;
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "name");
return TCL_ERROR;
}
dirPtr = TclPathPart(interp, objv[1], TCL_PATH_EXTENSION);
if (dirPtr == NULL) {
return TCL_ERROR;
}
Tcl_SetObjResult(interp, dirPtr);
Tcl_DecrRefCount(dirPtr);
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* PathRootNameCmd --
*
* This function is invoked to process the "file root" Tcl command. See
* the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
PathRootNameCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
Tcl_Obj *dirPtr;
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "name");
return TCL_ERROR;
}
dirPtr = TclPathPart(interp, objv[1], TCL_PATH_ROOT);
if (dirPtr == NULL) {
return TCL_ERROR;
}
Tcl_SetObjResult(interp, dirPtr);
Tcl_DecrRefCount(dirPtr);
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* PathTailCmd --
*
* This function is invoked to process the "file tail" Tcl command. See
* the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
PathTailCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
Tcl_Obj *dirPtr;
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "name");
return TCL_ERROR;
}
dirPtr = TclPathPart(interp, objv[1], TCL_PATH_TAIL);
if (dirPtr == NULL) {
return TCL_ERROR;
}
Tcl_SetObjResult(interp, dirPtr);
Tcl_DecrRefCount(dirPtr);
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* PathFilesystemCmd --
*
* This function is invoked to process the "file system" Tcl command. See
* the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
PathFilesystemCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
Tcl_Obj *fsInfo;
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "name");
return TCL_ERROR;
}
fsInfo = Tcl_FSFileSystemInfo(objv[1]);
if (fsInfo == NULL) {
Tcl_SetObjResult(interp, Tcl_NewStringObj("unrecognised path", -1));
Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "FILESYSTEM",
Tcl_GetString(objv[1]), NULL);
return TCL_ERROR;
}
Tcl_SetObjResult(interp, fsInfo);
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* PathJoinCmd --
*
* This function is invoked to process the "file join" Tcl command. See
* the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
PathJoinCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
if (objc < 2) {
Tcl_WrongNumArgs(interp, 1, objv, "name ?name ...?");
return TCL_ERROR;
}
Tcl_SetObjResult(interp, TclJoinPath(objc - 1, objv + 1, 0));
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* PathNativeNameCmd --
*
* This function is invoked to process the "file nativename" Tcl command.
* See the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
PathNativeNameCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
Tcl_DString ds;
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "name");
return TCL_ERROR;
}
if (Tcl_TranslateFileName(interp, TclGetString(objv[1]), &ds) == NULL) {
return TCL_ERROR;
}
Tcl_SetObjResult(interp, TclDStringToObj(&ds));
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* PathNormalizeCmd --
*
* This function is invoked to process the "file normalize" Tcl command.
* See the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
PathNormalizeCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
Tcl_Obj *fileName;
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "name");
return TCL_ERROR;
}
fileName = Tcl_FSGetNormalizedPath(interp, objv[1]);
if (fileName == NULL) {
return TCL_ERROR;
}
Tcl_SetObjResult(interp, fileName);
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* PathSplitCmd --
*
* This function is invoked to process the "file split" Tcl command. See
* the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
PathSplitCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
Tcl_Obj *res;
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "name");
return TCL_ERROR;
}
res = Tcl_FSSplitPath(objv[1], NULL);
if (res == NULL) {
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"could not read \"%s\": no such file or directory",
TclGetString(objv[1])));
Tcl_SetErrorCode(interp, "TCL", "OPERATION", "PATHSPLIT", "NONESUCH",
NULL);
return TCL_ERROR;
}
Tcl_SetObjResult(interp, res);
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* PathTypeCmd --
*
* This function is invoked to process the "file pathtype" Tcl command.
* See the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
PathTypeCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
Tcl_Obj *typeName;
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "name");
return TCL_ERROR;
}
switch (Tcl_FSGetPathType(objv[1])) {
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:
/* Should be unreachable */
return TCL_OK;
}
Tcl_SetObjResult(interp, typeName);
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* FilesystemSeparatorCmd --
*
* This function is invoked to process the "file separator" Tcl command.
* See the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
FilesystemSeparatorCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
if (objc < 1 || objc > 2) {
Tcl_WrongNumArgs(interp, 1, objv, "?name?");
return TCL_ERROR;
}
if (objc == 1) {
const 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[1]);
if (separatorObj == NULL) {
Tcl_SetObjResult(interp, Tcl_NewStringObj(
"unrecognised path", -1));
Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "FILESYSTEM",
Tcl_GetString(objv[1]), NULL);
return TCL_ERROR;
}
Tcl_SetObjResult(interp, separatorObj);
}
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* FilesystemVolumesCmd --
*
* This function is invoked to process the "file volumes" Tcl command.
* See the user documentation for details on what it does.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static int
FilesystemVolumesCmd(
ClientData clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
if (objc != 1) {
Tcl_WrongNumArgs(interp, 1, objv, NULL);
return TCL_ERROR;
}
Tcl_SetObjResult(interp, Tcl_FSListVolumes());
return TCL_OK;
}
/*
*---------------------------------------------------------------------------
*
* 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_SetObjResult(interp, Tcl_ObjPrintf(
"could not read \"%s\": %s",
TclGetString(pathPtr), Tcl_PosixError(interp)));
}
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;
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 arithmetic '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_NewWideIntObj(Tcl_GetAccessTimeFromStat(statPtr)));
STORE_ARY("mtime", Tcl_NewWideIntObj(Tcl_GetModificationTimeFromStat(statPtr)));
STORE_ARY("ctime", Tcl_NewWideIntObj(Tcl_GetChangeTimeFromStat(statPtr)));
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 const 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.
*
* Notes:
* This command is split into a lot of pieces so that it can avoid doing
* reentrant TEBC calls. This makes things rather hard to follow, but
* here's the plan:
*
* NR: ---------------_\
* Direct: Tcl_ForObjCmd -> TclNRForObjCmd
* |
* ForSetupCallback
* |
* [while] ------------> TclNRForIterCallback <---------.
* | |
* ForCondCallback |
* | |
* ForNextCallback ------------|
* | |
* ForPostNextCallback |
* |____________________|
*
*----------------------------------------------------------------------
*/
/* ARGSUSED */
int
Tcl_ForObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *const objv[]) /* Argument objects. */
{
return Tcl_NRCallObjProc(interp, TclNRForObjCmd, dummy, objc, objv);
}
int
TclNRForObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *const objv[]) /* Argument objects. */
{
Interp *iPtr = (Interp *) interp;
ForIterData *iterPtr;
if (objc != 5) {
Tcl_WrongNumArgs(interp, 1, objv, "start test next command");
return TCL_ERROR;
}
TclSmallAllocEx(interp, sizeof(ForIterData), iterPtr);
iterPtr->cond = objv[2];
iterPtr->body = objv[4];
iterPtr->next = objv[3];
iterPtr->msg = "\n (\"for\" body line %d)";
iterPtr->word = 4;
TclNRAddCallback(interp, ForSetupCallback, iterPtr, NULL, NULL, NULL);
/*
* TIP #280. Make invoking context available to initial script.
*/
return TclNREvalObjEx(interp, objv[1], 0, iPtr->cmdFramePtr, 1);
}
static int
ForSetupCallback(
ClientData data[],
Tcl_Interp *interp,
int result)
{
ForIterData *iterPtr = data[0];
if (result != TCL_OK) {
if (result == TCL_ERROR) {
Tcl_AddErrorInfo(interp, "\n (\"for\" initial command)");
}
TclSmallFreeEx(interp, iterPtr);
return result;
}
TclNRAddCallback(interp, TclNRForIterCallback, iterPtr, NULL, NULL, NULL);
return TCL_OK;
}
int
TclNRForIterCallback(
ClientData data[],
Tcl_Interp *interp,
int result)
{
ForIterData *iterPtr = data[0];
Tcl_Obj *boolObj;
switch (result) {
case TCL_OK:
case TCL_CONTINUE:
/*
* We need to reset the result before evaluating the expression.
* Otherwise, any error message will be appended to the result of the
* last evaluation.
*/
Tcl_ResetResult(interp);
TclNewObj(boolObj);
TclNRAddCallback(interp, ForCondCallback, iterPtr, boolObj, NULL,
NULL);
return Tcl_NRExprObj(interp, iterPtr->cond, boolObj);
case TCL_BREAK:
result = TCL_OK;
Tcl_ResetResult(interp);
break;
case TCL_ERROR:
Tcl_AppendObjToErrorInfo(interp,
Tcl_ObjPrintf(iterPtr->msg, Tcl_GetErrorLine(interp)));
}
TclSmallFreeEx(interp, iterPtr);
return result;
}
static int
ForCondCallback(
ClientData data[],
Tcl_Interp *interp,
int result)
{
Interp *iPtr = (Interp *) interp;
ForIterData *iterPtr = data[0];
Tcl_Obj *boolObj = data[1];
int value;
if (result != TCL_OK) {
Tcl_DecrRefCount(boolObj);
TclSmallFreeEx(interp, iterPtr);
return result;
} else if (Tcl_GetBooleanFromObj(interp, boolObj, &value) != TCL_OK) {
Tcl_DecrRefCount(boolObj);
TclSmallFreeEx(interp, iterPtr);
return TCL_ERROR;
}
Tcl_DecrRefCount(boolObj);
if (value) {
/* TIP #280. */
if (iterPtr->next) {
TclNRAddCallback(interp, ForNextCallback, iterPtr, NULL, NULL,
NULL);
} else {
TclNRAddCallback(interp, TclNRForIterCallback, iterPtr, NULL,
NULL, NULL);
}
return TclNREvalObjEx(interp, iterPtr->body, 0, iPtr->cmdFramePtr,
iterPtr->word);
}
TclSmallFreeEx(interp, iterPtr);
return result;
}
static int
ForNextCallback(
ClientData data[],
Tcl_Interp *interp,
int result)
{
Interp *iPtr = (Interp *) interp;
ForIterData *iterPtr = data[0];
Tcl_Obj *next = iterPtr->next;
if ((result == TCL_OK) || (result == TCL_CONTINUE)) {
TclNRAddCallback(interp, ForPostNextCallback, iterPtr, NULL, NULL,
NULL);
/*
* TIP #280. Make invoking context available to next script.
*/
return TclNREvalObjEx(interp, next, 0, iPtr->cmdFramePtr, 3);
}
TclNRAddCallback(interp, TclNRForIterCallback, iterPtr, NULL, NULL, NULL);
return result;
}
static int
ForPostNextCallback(
ClientData data[],
Tcl_Interp *interp,
int result)
{
ForIterData *iterPtr = data[0];
if ((result != TCL_BREAK) && (result != TCL_OK)) {
if (result == TCL_ERROR) {
Tcl_AddErrorInfo(interp, "\n (\"for\" loop-end command)");
TclSmallFreeEx(interp, iterPtr);
}
return result;
}
TclNRAddCallback(interp, TclNRForIterCallback, iterPtr, NULL, NULL, NULL);
return result;
}
/*
*----------------------------------------------------------------------
*
* Tcl_ForeachObjCmd, TclNRForeachCmd, EachloopCmd --
*
* 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. */
{
return Tcl_NRCallObjProc(interp, TclNRForeachCmd, dummy, objc, objv);
}
int
TclNRForeachCmd(
ClientData dummy,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
return EachloopCmd(interp, TCL_EACH_KEEP_NONE, objc, objv);
}
int
Tcl_LmapObjCmd(
ClientData dummy, /* Not used. */
Tcl_Interp *interp, /* Current interpreter. */
int objc, /* Number of arguments. */
Tcl_Obj *const objv[]) /* Argument objects. */
{
return Tcl_NRCallObjProc(interp, TclNRLmapCmd, dummy, objc, objv);
}
int
TclNRLmapCmd(
ClientData dummy,
Tcl_Interp *interp,
int objc,
Tcl_Obj *const objv[])
{
return EachloopCmd(interp, TCL_EACH_COLLECT, objc, objv);
}
static inline int
EachloopCmd(
Tcl_Interp *interp, /* Our context for variables and script
* evaluation. */
int collect, /* Select collecting or accumulating mode
* (TCL_EACH_*) */
int objc, /* The arguments being passed in... */
Tcl_Obj *const objv[])
{
int numLists = (objc-2) / 2;
struct ForeachState *statePtr;
int i, j, result;
if (objc < 4 || (objc%2 != 0)) {
Tcl_WrongNumArgs(interp, 1, objv,
"varList list ?varList list ...? command");
return TCL_ERROR;
}
/*
* Manage numList parallel value lists.
* statePtr->argvList[i] is a value list counted by statePtr->argcList[i];
* statePtr->varvList[i] is the list of variables associated with the
* value list;
* statePtr->varcList[i] is the number of variables associated with the
* value list;
* statePtr->index[i] is the current pointer into the value list
* statePtr->argvList[i].
*
* The setting up of all of these pointers is moderately messy, but allows
* the rest of this code to be simple and for us to use a single memory
* allocation for better performance.
*/
statePtr = TclStackAlloc(interp,
sizeof(struct ForeachState) + 3 * numLists * sizeof(int)
+ 2 * numLists * (sizeof(Tcl_Obj **) + sizeof(Tcl_Obj *)));
memset(statePtr, 0,
sizeof(struct ForeachState) + 3 * numLists * sizeof(int)
+ 2 * numLists * (sizeof(Tcl_Obj **) + sizeof(Tcl_Obj *)));
statePtr->varvList = (Tcl_Obj ***) (statePtr + 1);
statePtr->argvList = statePtr->varvList + numLists;
statePtr->vCopyList = (Tcl_Obj **) (statePtr->argvList + numLists);
statePtr->aCopyList = statePtr->vCopyList + numLists;
statePtr->index = (int *) (statePtr->aCopyList + numLists);
statePtr->varcList = statePtr->index + numLists;
statePtr->argcList = statePtr->varcList + numLists;
statePtr->numLists = numLists;
statePtr->bodyPtr = objv[objc - 1];
statePtr->bodyIdx = objc - 1;
if (collect == TCL_EACH_COLLECT) {
statePtr->resultList = Tcl_NewListObj(0, NULL);
} else {
statePtr->resultList = NULL;
}
/*
* Break up the value lists and variable lists into elements.
*/
for (i=0 ; i<numLists ; i++) {
statePtr->vCopyList[i] = TclListObjCopy(interp, objv[1+i*2]);
if (statePtr->vCopyList[i] == NULL) {
result = TCL_ERROR;
goto done;
}
TclListObjGetElements(NULL, statePtr->vCopyList[i],
&statePtr->varcList[i], &statePtr->varvList[i]);
if (statePtr->varcList[i] < 1) {
Tcl_SetObjResult(interp, Tcl_ObjPrintf(
"%s varlist is empty",
(statePtr->resultList != NULL ? "lmap" : "foreach")));
Tcl_SetErrorCode(interp, "TCL", "OPERATION",
(statePtr->resultList != NULL ? "LMAP" : "FOREACH"),
"NEEDVARS", NULL);
result = TCL_ERROR;
goto done;
}
statePtr->aCopyList[i] = TclListObjCopy(interp, objv[2+i*2]);
if (statePtr->aCopyList[i] == NULL) {
result = TCL_ERROR;
goto done;
}
TclListObjGetElements(NULL, statePtr->aCopyList[i],
&statePtr->argcList[i], &statePtr->argvList[i]);
j = statePtr->argcList[i] / statePtr->varcList[i];
if ((statePtr->argcList[i] % statePtr->varcList[i]) != 0) {
j++;
}
if (j > statePtr->maxj) {
statePtr->maxj = j;
}
}
/*
* If there is any work to do, assign the variables and set things going
* non-recursively.
*/
if (statePtr->maxj > 0) {
result = ForeachAssignments(interp, statePtr);
if (result == TCL_ERROR) {
goto done;
}
TclNRAddCallback(interp, ForeachLoopStep, statePtr, NULL, NULL, NULL);
return TclNREvalObjEx(interp, objv[objc-1], 0,
((Interp *) interp)->cmdFramePtr, objc-1);
}
/*
* This cleanup stage is only used when an error occurs during setup or if
* there is no work to do.
*/
result = TCL_OK;
done:
ForeachCleanup(interp, statePtr);
return result;
}
/*
* Post-body processing handler.
*/
static int
ForeachLoopStep(
ClientData data[],
Tcl_Interp *interp,
int result)
{
struct ForeachState *statePtr = data[0];
/*
* Process the result code from this run of the [foreach] body. Note that
* this switch uses fallthroughs in several places. Maintainer aware!
*/
switch (result) {
case TCL_CONTINUE:
result = TCL_OK;
break;
case TCL_OK:
if (statePtr->resultList != NULL) {
Tcl_ListObjAppendElement(interp, statePtr->resultList,
Tcl_GetObjResult(interp));
}
break;
case TCL_BREAK:
result = TCL_OK;
goto finish;
case TCL_ERROR:
Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
"\n (\"%s\" body line %d)",
(statePtr->resultList != NULL ? "lmap" : "foreach"),
Tcl_GetErrorLine(interp)));
default:
goto done;
}
/*
* Test if there is work still to be done. If so, do the next round of
* variable assignments, reschedule ourselves and run the body again.
*/
if (statePtr->maxj > ++statePtr->j) {
result = ForeachAssignments(interp, statePtr);
if (result == TCL_ERROR) {
goto done;
}
TclNRAddCallback(interp, ForeachLoopStep, statePtr, NULL, NULL, NULL);
return TclNREvalObjEx(interp, statePtr->bodyPtr, 0,
((Interp *) interp)->cmdFramePtr, statePtr->bodyIdx);
}
/*
* We're done. Tidy up our work space and finish off.
*/
finish:
if (statePtr->resultList == NULL) {
Tcl_ResetResult(interp);
} else {
Tcl_SetObjResult(interp, statePtr->resultList);
statePtr->resultList = NULL; /* Don't clean it up */
}
done:
ForeachCleanup(interp, statePtr);
return result;
}
/*
* Factored out code to do the assignments in [foreach].
*/
static inline int
ForeachAssignments(
Tcl_Interp *interp,
struct ForeachState *statePtr)
{
int i, v, k;
Tcl_Obj *valuePtr, *varValuePtr;
for (i=0 ; i<statePtr->numLists ; i++) {
for (v=0 ; v<statePtr->varcList[i] ; v++) {
k = statePtr->index[i]++;
if (k < statePtr->argcList[i]) {
valuePtr = statePtr->argvList[i][k];
} else {
TclNewObj(valuePtr); /* Empty string */
}
varValuePtr = Tcl_ObjSetVar2(interp, statePtr->varvList[i][v],
NULL, valuePtr, TCL_LEAVE_ERR_MSG);
if (varValuePtr == NULL) {
Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
"\n (setting %s loop variable \"%s\")",
(statePtr->resultList != NULL ? "lmap" : "foreach"),
TclGetString(statePtr->varvList[i][v])));
return TCL_ERROR;
}
}
}
return TCL_OK;
}
/*
* Factored out code for cleaning up the state of the foreach.
*/
static inline void
ForeachCleanup(
Tcl_Interp *interp,
struct ForeachState *statePtr)
{
int i;
for (i=0 ; i<statePtr->numLists ; i++) {
if (statePtr->vCopyList[i]) {
TclDecrRefCount(statePtr->vCopyList[i]);
}
if (statePtr->aCopyList[i]) {
TclDecrRefCount(statePtr->aCopyList[i]);
}
}
if (statePtr->resultList != NULL) {
TclDecrRefCount(statePtr->resultList);
}
TclStackFree(interp, statePtr);
}
/*
*----------------------------------------------------------------------
*
* 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 ...?");
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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