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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.
*
* RCS: @(#) $Id: tclCmdAH.c,v 1.57.2.10 2005/09/15 20:58:39 dgp Exp $
*/
#include "tclInt.h"
#include <locale.h>
#define NEW_FORMAT 1
/*
* Prototypes for local procedures defined in this file:
*/
static int CheckAccess(Tcl_Interp *interp, Tcl_Obj *pathPtr,
int mode);
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(dummy, interp, objc, objv)
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.
*
* Results:
* A standard Tcl object result.
*
* Side effects:
* See the user documentation.
*
*----------------------------------------------------------------------
*/
/* ARGSUSED */
int
Tcl_CaseObjCmd(dummy, interp, objc, objv)
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;
Tcl_ListObjGetElements(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) {
TclFormatToErrorInfo(interp, "\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(dummy, interp, objc, objv)
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;
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];
}
result = Tcl_EvalObjEx(interp, objv[1], 0);
/*
* We disable catch in interpreters where the limit has been exceeded.
*/
if (Tcl_LimitExceeded(interp)) {
TclFormatToErrorInfo(interp, "\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_DecrRefCount(options);
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(dummy, interp, objc, objv)
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 {
dir = Tcl_NewStringObj("~",1);
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(dummy, interp, objc, objv)
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(dummy, interp, objc, objv)
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(dummy, interp, objc, objv)
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", "names", "system",
NULL
};
enum options {
ENC_CONVERTFROM, ENC_CONVERTTO, 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 (TclGetEncodingFromObj(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 = Tcl_GetStringFromObj(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_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;
}
/*
*----------------------------------------------------------------------
*
* TclEncodingDirsObjCmd --
*
* This command manipulates the encoding search path.
*
* Results:
* A standard Tcl result.
*
* Side effects:
* Can set the encoding search path.
*
*----------------------------------------------------------------------
*/
int
TclEncodingDirsObjCmd(dummy, interp, objc, objv)
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, TclGetEncodingSearchPath());
return TCL_OK;
}
if (TclSetEncodingSearchPath(objv[1]) == TCL_ERROR) {
Tcl_AppendResult(interp, "expected directory list but got \"",
Tcl_GetString(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(dummy, interp, objc, objv)
ClientData dummy; /* Not used. */
Tcl_Interp *interp; /* Current interpreter. */
int objc; /* Number of arguments. */
Tcl_Obj *CONST objv[]; /* Argument objects. */
{
Tcl_Obj *options;
if ((objc < 2) || (objc > 4)) {
Tcl_WrongNumArgs(interp, 1, objv, "message ?errorInfo? ?errorCode?");
return TCL_ERROR;
}
options = Tcl_NewStringObj("-code error -level 0", -1);
if (objc >= 3) { /* process the optional info argument */
Tcl_ListObjAppendElement(NULL, options,
Tcl_NewStringObj("-errorinfo", -1));
Tcl_ListObjAppendElement(NULL, options, objv[2]);
}
if (objc == 4) { /* process the optional code argument */
Tcl_ListObjAppendElement(NULL, options,
Tcl_NewStringObj("-errorcode", -1));
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(dummy, interp, objc, objv)
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;
if (objc < 2) {
Tcl_WrongNumArgs(interp, 1, objv, "arg ?arg ...?");
return TCL_ERROR;
}
if (objc == 2) {
result = Tcl_EvalObjEx(interp, objv[1], TCL_EVAL_DIRECT);
} 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);
result = Tcl_EvalObjEx(interp, objPtr, TCL_EVAL_DIRECT);
}
if (result == TCL_ERROR) {
TclFormatToErrorInfo(interp,"\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(dummy, interp, objc, objv)
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(dummy, interp, objc, objv)
ClientData dummy; /* Not used. */
Tcl_Interp *interp; /* Current interpreter. */
int objc; /* Number of arguments. */
Tcl_Obj *CONST objv[]; /* Argument objects. */
{
register Tcl_Obj *objPtr;
Tcl_Obj *resultPtr;
int result;
if (objc < 2) {
Tcl_WrongNumArgs(interp, 1, objv, "arg ?arg ...?");
return TCL_ERROR;
}
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(dummy, interp, objc, objv)
ClientData dummy; /* Not used. */
Tcl_Interp *interp; /* Current interpreter. */
int objc; /* Number of arguments. */
Tcl_Obj *CONST objv[]; /* Argument objects. */
{
int index;
/*
* 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",
(char *) 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) {
{
Tcl_StatBuf buf;
struct utimbuf tval;
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 (Tcl_GetLongFromObj(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), (char *) 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;
}
}
{
int value;
Tcl_StatBuf buf;
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", (char *) 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",
(char *) NULL);
} else {
Tcl_AppendResult(interp,
"could not create new link \"",
TclGetString(objv[index]), "\": target \"",
TclGetString(objv[index+1]),
"\" doesn't exist", (char *) NULL);
}
} else {
Tcl_AppendResult(interp,
"could not create new link \"",
TclGetString(objv[index]), "\" pointing to \"",
TclGetString(objv[index+1]), "\": ",
Tcl_PosixError(interp), (char *) 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), (char *) 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;
}
{
Tcl_StatBuf buf;
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:
if (objc != 3) {
goto only3Args;
}
switch (Tcl_FSGetPathType(objv[2])) {
case TCL_PATH_ABSOLUTE:
Tcl_SetObjResult(interp, Tcl_NewStringObj("absolute", -1));
break;
case TCL_PATH_RELATIVE:
Tcl_SetObjResult(interp, Tcl_NewStringObj("relative", -1));
break;
case TCL_PATH_VOLUME_RELATIVE:
Tcl_SetObjResult(interp, Tcl_NewStringObj("volumerelative", -1));
break;
}
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),
(char *) 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_SetObjResult(interp, separatorObj);
} else {
Tcl_SetObjResult(interp,
Tcl_NewStringObj("Unrecognised path",-1));
return TCL_ERROR;
}
}
return TCL_OK;
case FCMD_SPLIT: {
Tcl_Obj *res;
if (objc != 3) {
goto only3Args;
}
res = Tcl_FSSplitPath(objv[2], NULL);
if (res == NULL) {
if (interp != NULL) {
Tcl_AppendResult(interp, "could not read \"",
TclGetString(objv[2]),
"\": no such file or directory", (char *) NULL);
}
return TCL_ERROR;
} else {
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_SetObjResult(interp, fsInfo);
return TCL_OK;
} else {
Tcl_SetObjResult(interp, Tcl_NewStringObj("Unrecognised path",-1));
return TCL_ERROR;
}
}
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;
} else {
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(interp, pathPtr, mode)
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(interp, pathPtr, statProc, statPtr)
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), (char *) 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(interp, varName, statPtr)
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 = Tcl_NewObj();
Tcl_Obj *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 so we don't have
* to make assumptions that might go wrong later.
*/
#define STORE_ARY(fieldName, object) \
Tcl_SetStringObj(field, (fieldName), -1); \
value = (object); \
if (Tcl_ObjSetVar2(interp,varName,field,value,TCL_LEAVE_ERR_MSG)==NULL) { \
Tcl_DecrRefCount(field); \
Tcl_DecrRefCount(value); \
return TCL_ERROR; \
}
Tcl_IncrRefCount(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_ST_BLOCKS
STORE_ARY("blocks", Tcl_NewWideIntObj((Tcl_WideInt)statPtr->st_blocks));
#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
Tcl_DecrRefCount(field);
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(mode)
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(dummy, interp, objc, objv)
ClientData dummy; /* Not used. */
Tcl_Interp *interp; /* Current interpreter. */
int objc; /* Number of arguments. */
Tcl_Obj *CONST objv[]; /* Argument objects. */
{
int result, value;
if (objc != 5) {
Tcl_WrongNumArgs(interp, 1, objv, "start test next command");
return TCL_ERROR;
}
result = Tcl_EvalObjEx(interp, objv[1], 0);
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;
}
result = Tcl_EvalObjEx(interp, objv[4], 0);
if ((result != TCL_OK) && (result != TCL_CONTINUE)) {
if (result == TCL_ERROR) {
TclFormatToErrorInfo(interp, "\n (\"for\" body line %d)",
interp->errorLine);
}
break;
}
result = Tcl_EvalObjEx(interp, objv[3], 0);
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(dummy, interp, objc, objv)
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; /* Count of value lists */
Tcl_Obj *bodyPtr;
/*
* We copy the argument object pointers into a local array to avoid the
* problem that "objv" might become invalid. It is a pointer into the
* evaluation stack and that stack might be grown and reallocated if the
* loop body requires a large amount of stack space.
*/
#define NUM_ARGS 9
Tcl_Obj *(argObjStorage[NUM_ARGS]);
Tcl_Obj **argObjv = argObjStorage;
#define STATIC_LIST_SIZE 4
int indexArray[STATIC_LIST_SIZE];
int varcListArray[STATIC_LIST_SIZE];
Tcl_Obj **varvListArray[STATIC_LIST_SIZE];
int argcListArray[STATIC_LIST_SIZE];
Tcl_Obj **argvListArray[STATIC_LIST_SIZE];
int *index = indexArray; /* Array of value list indices */
int *varcList = varcListArray; /* # loop variables per list */
Tcl_Obj ***varvList = varvListArray;/* Array of var name lists */
int *argcList = argcListArray; /* Array of value list sizes */
Tcl_Obj ***argvList = argvListArray;/* Array of value lists */
if (objc < 4 || (objc%2 != 0)) {
Tcl_WrongNumArgs(interp, 1, objv,
"varList list ?varList list ...? command");
return TCL_ERROR;
}
/*
* Create the object argument array "argObjv". Make sure argObjv is large
* enough to hold the objc arguments.
*/
if (objc > NUM_ARGS) {
argObjv = (Tcl_Obj **) ckalloc(objc * sizeof(Tcl_Obj *));
}
for (i=0 ; i<objc ; i++) {
argObjv[i] = objv[i];
}
/*
* 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].
*/
numLists = (objc-2)/2;
if (numLists > STATIC_LIST_SIZE) {
index = (int *) ckalloc(numLists * sizeof(int));
varcList = (int *) ckalloc(numLists * sizeof(int));
varvList = (Tcl_Obj ***) ckalloc(numLists * sizeof(Tcl_Obj **));
argcList = (int *) ckalloc(numLists * sizeof(int));
argvList = (Tcl_Obj ***) ckalloc(numLists * sizeof(Tcl_Obj **));
}
for (i = 0; i < numLists; i++) {
index[i] = 0;
varcList[i] = 0;
varvList[i] = (Tcl_Obj **) NULL;
argcList[i] = 0;
argvList[i] = (Tcl_Obj **) NULL;
}
/*
* Break up the value lists and variable lists into elements.
*/
maxj = 0;
for (i=0 ; i<numLists ; i++) {
result = Tcl_ListObjGetElements(interp, argObjv[1+i*2],
&varcList[i], &varvList[i]);
if (result != TCL_OK) {
goto done;
}
if (varcList[i] < 1) {
Tcl_AppendResult(interp, "foreach varlist is empty", NULL);
result = TCL_ERROR;
goto done;
}
result = Tcl_ListObjGetElements(interp, argObjv[2+i*2],
&argcList[i], &argvList[i]);
if (result != TCL_OK) {
goto done;
}
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 = argObjv[objc-1];
for (j=0 ; j<maxj ; j++) {
for (i=0 ; i<numLists ; i++) {
/*
* Refetch the list members; we assume that the sizes are the
* same, but the array of elements might be different if the
* internal rep of the objects has been lost and recreated (it is
* too difficult to accurately tell when this happens, which can
* lead to some wierd crashes, like Bug #494348...)
*/
result = Tcl_ListObjGetElements(interp, argObjv[1+i*2],
&varcList[i], &varvList[i]);
if (result != TCL_OK) {
Tcl_Panic("Tcl_ForeachObjCmd: could not reconvert variable list %d to a list object\n", i);
}
result = Tcl_ListObjGetElements(interp, argObjv[2+i*2],
&argcList[i], &argvList[i]);
if (result != TCL_OK) {
Tcl_Panic("Tcl_ForeachObjCmd: could not reconvert value list %d to a list object\n", i);
}
for (v=0 ; v<varcList[i] ; v++) {
int k = index[i]++;
Tcl_Obj *valuePtr, *varValuePtr;
int isEmptyObj = 0;
if (k < argcList[i]) {
valuePtr = argvList[i][k];
} else {
valuePtr = Tcl_NewObj(); /* empty string */
isEmptyObj = 1;
}
varValuePtr = Tcl_ObjSetVar2(interp, varvList[i][v],
NULL, valuePtr, 0);
if (varValuePtr == NULL) {
if (isEmptyObj) {
Tcl_DecrRefCount(valuePtr);
}
Tcl_ResetResult(interp);
Tcl_AppendResult(interp, "couldn't set loop variable: \"",
TclGetString(varvList[i][v]), "\"", (char *) NULL);
result = TCL_ERROR;
goto done;
}
}
}
result = Tcl_EvalObjEx(interp, bodyPtr, 0);
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) {
TclFormatToErrorInfo(interp,
"\n (\"foreach\" body line %d)", interp->errorLine);
break;
} else {
break;
}
}
}
if (result == TCL_OK) {
Tcl_ResetResult(interp);
}
done:
if (numLists > STATIC_LIST_SIZE) {
ckfree((char *) index);
ckfree((char *) varcList);
ckfree((char *) argcList);
ckfree((char *) varvList);
ckfree((char *) argvList);
}
if (argObjv != argObjStorage) {
ckfree((char *) argObjv);
}
return result;
#undef STATIC_LIST_SIZE
#undef NUM_ARGS
}
/*
*----------------------------------------------------------------------
*
* 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(dummy, interp, objc, objv)
ClientData dummy; /* Not used. */
Tcl_Interp *interp; /* Current interpreter. */
int objc; /* Number of arguments. */
Tcl_Obj *CONST objv[]; /* Argument objects. */
{
#ifndef NEW_FORMAT
char *format; /* Used to read characters from the format
* string. */
int formatLen; /* The length of the format string */
char *endPtr; /* Points to the last char in format array */
char newFormat[43]; /* A new format specifier is generated here. */
int width; /* Field width from field specifier, or 0 if
* no width given. */
int precision; /* Field precision from field specifier, or 0
* if no precision given. */
int size; /* Number of bytes needed for result of
* conversion, based on type of conversion
* ("e", "s", etc.), width, and precision. */
long intValue; /* Used to hold value to pass to sprintf, if
* it's a one-word integer or char value */
char *ptrValue = NULL; /* Used to hold value to pass to sprintf, if
* it's a one-word value. */
double doubleValue; /* Used to hold value to pass to sprintf if
* it's a double value. */
Tcl_WideInt wideValue; /* Used to hold value to pass to sprintf if
* it's a 'long long' value. */
int whichValue; /* Indicates which of intValue, ptrValue, or
* doubleValue has the value to pass to
* sprintf, according to the following
* definitions: */
#define INT_VALUE 0
#define CHAR_VALUE 1
#define PTR_VALUE 2
#define DOUBLE_VALUE 3
#define STRING_VALUE 4
#define WIDE_VALUE 5
#define MAX_FLOAT_SIZE 320
#endif
Tcl_Obj *resultPtr; /* Where result is stored finally. */
#ifndef NEW_FORMAT
char staticBuf[MAX_FLOAT_SIZE + 1];
/* A static buffer to copy the format results
* into */
char *dst = staticBuf; /* The buffer that sprintf writes into each
* time the format processes a specifier */
int dstSize = MAX_FLOAT_SIZE;
/* The size of the dst buffer */
int noPercent; /* Special case for speed: indicates there's
* no field specifier, just a string to
* copy. */
int objIndex; /* Index of argument to substitute next. */
int gotXpg = 0; /* Non-zero means that an XPG3 %n$-style
* specifier has been seen. */
int gotSequential = 0; /* Non-zero means that a regular sequential
* (non-XPG3) conversion specifier has been
* seen. */
int useShort; /* Value to be printed is short (half word). */
char *end; /* Used to locate end of numerical fields. */
int stringLen = 0; /* Length of string in characters rather than
* bytes. Used for %s substitution. */
int gotMinus; /* Non-zero indicates that a minus flag has
* been seen in the current field. */
int gotPrecision; /* Non-zero indicates that a precision has
* been set for the current field. */
int gotZero; /* Non-zero indicates that a zero flag has
* been seen in the current field. */
int useWide; /* Value to be printed is Tcl_WideInt. */
/*
* This procedure is a bit nasty. The goal is to use sprintf to do most of
* the dirty work. There are several problems:
* 1. this procedure can't trust its arguments.
* 2. we must be able to provide a large enough result area to hold
* whatever's generated. This is hard to estimate.
* 3. there's no way to move the arguments from objv to the call to
* sprintf in a reasonable way. This is particularly nasty because
* some of the arguments may be two-word values (doubles and
* wide-ints).
* So, what happens here is to scan the format string one % group at a
* time, making many individual calls to sprintf.
*/
#endif
if (objc < 2) {
Tcl_WrongNumArgs(interp, 1, objv, "formatString ?arg arg ...?");
return TCL_ERROR;
}
#ifdef NEW_FORMAT
resultPtr = Tcl_NewObj();
Tcl_IncrRefCount(resultPtr);
if (TclAppendFormattedObjs(interp, resultPtr, Tcl_GetString(objv[1]),
objc-2, objv+2) != TCL_OK) {
Tcl_DecrRefCount(resultPtr);
return TCL_ERROR;
}
Tcl_SetObjResult(interp, resultPtr);
Tcl_DecrRefCount(resultPtr);
return TCL_OK;
#else
format = Tcl_GetStringFromObj(objv[1], &formatLen);
endPtr = format + formatLen;
resultPtr = Tcl_NewObj();
objIndex = 2;
while (format < endPtr) {
register char *newPtr = newFormat;
width = precision = noPercent = useShort = 0;
gotZero = gotMinus = gotPrecision = 0;
useWide = 0;
whichValue = PTR_VALUE;
/*
* Get rid of any characters before the next field specifier.
*/
if (*format != '%') {
ptrValue = format;
while ((*format != '%') && (format < endPtr)) {
format++;
}
size = format - ptrValue;
noPercent = 1;
goto doField;
}
if (format[1] == '%') {
ptrValue = format;
size = 1;
noPercent = 1;
format += 2;
goto doField;
}
/*
* Parse off a field specifier, compute how many characters will be
* needed to store the result, and substitute for "*" size specifiers.
*/
*newPtr = '%';
newPtr++;
format++;
if (isdigit(UCHAR(*format))) { /* INTL: Tcl source. */
int tmp;
/*
* Check for an XPG3-style %n$ specification. Note: there must not
* be a mixture of XPG3 specs and non-XPG3 specs in the same
* format string.
*/
tmp = strtoul(format, &end, 10); /* INTL: "C" locale. */
if (*end != '$') {
goto notXpg;
}
format = end+1;
gotXpg = 1;
if (gotSequential) {
goto mixedXPG;
}
objIndex = tmp+1;
if ((objIndex < 2) || (objIndex >= objc)) {
goto badIndex;
}
goto xpgCheckDone;
}
notXpg:
gotSequential = 1;
if (gotXpg) {
goto mixedXPG;
}
xpgCheckDone:
while ((*format == '-') || (*format == '#') || (*format == '0')
|| (*format == ' ') || (*format == '+')) {
if (*format == '-') {
gotMinus = 1;
}
if (*format == '0') {
/*
* This will be handled by sprintf for numbers, but we need to
* do the char/string ones ourselves.
*/
gotZero = 1;
}
*newPtr = *format;
newPtr++;
format++;
}
if (isdigit(UCHAR(*format))) { /* INTL: Tcl source. */
width = strtoul(format, &end, 10); /* INTL: Tcl source. */
format = end;
} else if (*format == '*') {
if (objIndex >= objc) {
goto badIndex;
}
if (Tcl_GetIntFromObj(interp, /* INTL: Tcl source. */
objv[objIndex], &width) != TCL_OK) {
goto fmtError;
}
if (width < 0) {
width = -width;
*newPtr = '-';
gotMinus = 1;
newPtr++;
}
objIndex++;
format++;
}
if (width > 100000) {
/*
* Don't allow arbitrarily large widths: could cause core dump
* when we try to allocate a zillion bytes of memory below.
*/
width = 100000;
} else if (width < 0) {
width = 0;
}
if (width != 0) {
TclFormatInt(newPtr, width); /* INTL: printf format. */
while (*newPtr != 0) {
newPtr++;
}
}
if (*format == '.') {
*newPtr = '.';
newPtr++;
format++;
gotPrecision = 1;
}
if (isdigit(UCHAR(*format))) { /* INTL: Tcl source. */
precision = strtoul(format, &end, 10); /* INTL: "C" locale. */
format = end;
} else if (*format == '*') {
if (objIndex >= objc) {
goto badIndex;
}
if (Tcl_GetIntFromObj(interp, /* INTL: Tcl source. */
objv[objIndex], &precision) != TCL_OK) {
goto fmtError;
}
objIndex++;
format++;
}
if (gotPrecision) {
TclFormatInt(newPtr, precision); /* INTL: printf format. */
while (*newPtr != 0) {
newPtr++;
}
}
if (*format == 'l') {
useWide = 1;
/*
* Only add a 'll' modifier for integer values as it makes some
* libc's go into spasm otherwise. [Bug #702622]
*/
switch (format[1]) {
case 'i':
case 'd':
case 'o':
case 'u':
case 'x':
case 'X':
strcpy(newPtr, TCL_LL_MODIFIER);
newPtr += TCL_LL_MODIFIER_SIZE;
}
format++;
} else if (*format == 'h') {
useShort = 1;
*newPtr = 'h';
newPtr++;
format++;
}
*newPtr = *format;
newPtr++;
*newPtr = 0;
if (objIndex >= objc) {
goto badIndex;
}
switch (*format) {
case 'i':
newPtr[-1] = 'd';
case 'd':
case 'o':
case 'u':
case 'x':
case 'X':
if (useWide) {
if (Tcl_GetWideIntFromObj(interp, /* INTL: Tcl source. */
objv[objIndex], &wideValue) != TCL_OK) {
goto fmtError;
}
whichValue = WIDE_VALUE;
size = 40 + precision;
break;
}
if (Tcl_GetLongFromObj(interp, /* INTL: Tcl source. */
objv[objIndex], &intValue) != TCL_OK) {
goto fmtError;
}
#if (LONG_MAX > INT_MAX)
if (!useShort) {
/*
* Add the 'l' for long format type because we are on an LP64
* archtecture and we are really going to pass a long argument
* to sprintf.
*
* Do not add this if we're going to pass in a short (i.e. if
* we've got an 'h' modifier already in the string); some libc
* implementations of sprintf() do not like it at all. [Bug
* 1154163]
*/
newPtr++;
*newPtr = 0;
newPtr[-1] = newPtr[-2];
newPtr[-2] = 'l';
}
#endif /* LONG_MAX > INT_MAX */
whichValue = INT_VALUE;
size = 40 + precision;
break;
case 's':
/*
* Compute the length of the string in characters and add any
* additional space required by the field width. All of the extra
* characters will be spaces, so one byte per character is
* adequate.
*/
whichValue = STRING_VALUE;
ptrValue = Tcl_GetStringFromObj(objv[objIndex], &size);
stringLen = Tcl_NumUtfChars(ptrValue, size);
if (gotPrecision && (precision < stringLen)) {
stringLen = precision;
}
size = Tcl_UtfAtIndex(ptrValue, stringLen) - ptrValue;
if (width > stringLen) {
size += (width - stringLen);
}
break;
case 'c':
if (Tcl_GetLongFromObj(interp, /* INTL: Tcl source. */
objv[objIndex], &intValue) != TCL_OK) {
goto fmtError;
}
whichValue = CHAR_VALUE;
size = width + TCL_UTF_MAX;
break;
case 'e':
case 'E':
case 'f':
case 'g':
case 'G':
if (Tcl_GetDoubleFromObj(interp, /* INTL: Tcl source. */
objv[objIndex], &doubleValue) != TCL_OK) {
/*TODO: figure out ACCEPT_NAN */
goto fmtError;
}
whichValue = DOUBLE_VALUE;
size = MAX_FLOAT_SIZE;
if (precision > 10) {
size += precision;
}
break;
case 0:
Tcl_SetResult(interp,
"format string ended in middle of field specifier",
TCL_STATIC);
goto fmtError;
default:
{
char buf[40];
sprintf(buf, "bad field specifier \"%c\"", *format);
Tcl_SetResult(interp, buf, TCL_VOLATILE);
goto fmtError;
}
}
objIndex++;
format++;
/*
* Make sure that there's enough space to hold the formatted result,
* then format it.
*/
doField:
if (width > size) {
size = width;
}
if (noPercent) {
Tcl_AppendToObj(resultPtr, ptrValue, size);
} else {
if (size > dstSize) {
if (dst != staticBuf) {
ckfree(dst);
}
dst = (char *) ckalloc((unsigned) (size + 1));
dstSize = size;
}
switch (whichValue) {
case DOUBLE_VALUE:
sprintf(dst, newFormat, doubleValue); /* INTL: user locale. */
break;
case WIDE_VALUE:
sprintf(dst, newFormat, wideValue);
break;
case INT_VALUE:
if (useShort) {
sprintf(dst, newFormat, (short) intValue);
} else {
sprintf(dst, newFormat, intValue);
}
break;
case CHAR_VALUE: {
char *ptr;
char padChar = (gotZero ? '0' : ' ');
ptr = dst;
if (!gotMinus) {
for ( ; --width > 0; ptr++) {
*ptr = padChar;
}
}
ptr += Tcl_UniCharToUtf(intValue, ptr);
for ( ; --width > 0; ptr++) {
*ptr = padChar;
}
*ptr = '\0';
break;
}
case STRING_VALUE: {
char *ptr;
char padChar = (gotZero ? '0' : ' ');
int pad;
ptr = dst;
if (width > stringLen) {
pad = width - stringLen;
} else {
pad = 0;
}
if (!gotMinus) {
while (pad > 0) {
*ptr++ = padChar;
pad--;
}
}
size = Tcl_UtfAtIndex(ptrValue, stringLen) - ptrValue;
if (size) {
memcpy(ptr, ptrValue, (size_t) size);
ptr += size;
}
while (pad > 0) {
*ptr++ = padChar;
pad--;
}
*ptr = '\0';
break;
}
default:
sprintf(dst, newFormat, ptrValue);
break;
}
Tcl_AppendToObj(resultPtr, dst, -1);
}
}
Tcl_SetObjResult(interp, resultPtr);
if (dst != staticBuf) {
ckfree(dst);
}
return TCL_OK;
mixedXPG:
Tcl_SetResult(interp,
"cannot mix \"%\" and \"%n$\" conversion specifiers", TCL_STATIC);
goto fmtError;
badIndex:
if (gotXpg) {
Tcl_SetResult(interp,
"\"%n$\" argument index out of range", TCL_STATIC);
} else {
Tcl_SetResult(interp,
"not enough arguments for all format specifiers", TCL_STATIC);
}
fmtError:
if (dst != staticBuf) {
ckfree(dst);
}
Tcl_DecrRefCount(resultPtr);
return TCL_ERROR;
#endif
}
/*
* Local Variables:
* mode: c
* c-basic-offset: 4
* fill-column: 78
* End:
*/
|