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tclCmdAH.c
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1999-04-23
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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.
*
* SCCS: @(#) tclCmdAH.c 1.159 97/10/31 13:06:07
*/
#include "tclInt.h"
#include "tclPort.h"
/*
* Prototypes for local procedures defined in this file:
*/
static char * GetTypeFromMode _ANSI_ARGS_((int mode));
static int StoreStatData _ANSI_ARGS_((Tcl_Interp *interp,
char *varName, struct stat *statPtr));
/*
*----------------------------------------------------------------------
*
* Tcl_BreakCmd --
*
* 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_BreakCmd(dummy, interp, argc, argv)
ClientData dummy; /* Not used. */
Tcl_Interp *interp; /* Current interpreter. */
int argc; /* Number of arguments. */
char **argv; /* Argument strings. */
{
if (argc != 1) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
argv[0], "\"", (char *) 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;
char *string, *arg;
int argLen, caseObjc;
Tcl_Obj *CONST *caseObjv;
Tcl_Obj *armPtr;
if (objc < 3) {
Tcl_WrongNumArgs(interp, 1, objv,
"string ?in? patList body ... ?default body?");
return TCL_ERROR;
}
/*
* THIS FAILS IF AN OBJECT'S STRING REP HAS A NULL BYTE.
*/
string = Tcl_GetStringFromObj(objv[1], &argLen);
body = -1;
arg = Tcl_GetStringFromObj(objv[2], &argLen);
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.
* THIS FAILS IF THE ARG'S STRING REP CONTAINS A NULL
*/
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;
char **patObjv;
char *pat;
register char *p;
if (i == (caseObjc-1)) {
Tcl_ResetResult(interp);
Tcl_AppendToObj(Tcl_GetObjResult(interp),
"extra case pattern with no body", -1);
return TCL_ERROR;
}
/*
* Check for special case of single pattern (no list) with
* no backslash sequences.
*/
pat = Tcl_GetStringFromObj(caseObjv[i], &argLen);
for (p = pat; *p != 0; p++) { /* FAILS IF NULL BYTE */
if (isspace(UCHAR(*p)) || (*p == '\\')) {
break;
}
}
if (*p == 0) {
if ((*pat == 'd') && (strcmp(pat, "default") == 0)) {
body = i+1;
}
if (Tcl_StringMatch(string, 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(string, patObjv[j])) {
body = i+1;
break;
}
}
ckfree((char *) patObjv);
if (j < patObjc) {
break;
}
}
match:
if (body != -1) {
armPtr = caseObjv[body-1];
result = Tcl_EvalObj(interp, caseObjv[body]);
if (result == TCL_ERROR) {
char msg[100];
arg = Tcl_GetStringFromObj(armPtr, &argLen);
sprintf(msg, "\n (\"%.*s\" arm line %d)", argLen, arg,
interp->errorLine);
Tcl_AddObjErrorInfo(interp, msg, -1);
}
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;
int result;
if ((objc != 2) && (objc != 3)) {
Tcl_WrongNumArgs(interp, 1, objv, "command ?varName?");
return TCL_ERROR;
}
/*
* Save a pointer to the variable name object, if any, in case the
* Tcl_EvalObj reallocates the bytecode interpreter's evaluation
* stack rendering objv invalid.
*/
if (objc == 3) {
varNamePtr = objv[2];
}
result = Tcl_EvalObj(interp, objv[1]);
if (objc == 3) {
if (Tcl_ObjSetVar2(interp, varNamePtr, NULL,
Tcl_GetObjResult(interp), TCL_PARSE_PART1) == NULL) {
Tcl_ResetResult(interp);
Tcl_AppendToObj(Tcl_GetObjResult(interp),
"couldn't save command result in variable", -1);
return TCL_ERROR;
}
}
/*
* Set the interpreter's object result to an integer object holding the
* integer Tcl_EvalObj result. Note that we don't bother generating a
* string representation. We reset the interpreter's object result
* to an unshared empty object and then set it to be an integer object.
*/
Tcl_ResetResult(interp);
Tcl_SetIntObj(Tcl_GetObjResult(interp), 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. */
{
char *dirName;
int dirLength;
Tcl_DString buffer;
int result;
if (objc > 2) {
Tcl_WrongNumArgs(interp, 1, objv, "dirName");
return TCL_ERROR;
}
if (objc == 2) {
dirName = Tcl_GetStringFromObj(objv[1], &dirLength);
} else {
dirName = "~";
}
dirName = Tcl_TranslateFileName(interp, dirName, &buffer);
if (dirName == NULL) {
return TCL_ERROR;
}
result = TclChdir(interp, dirName);
Tcl_DStringFree(&buffer);
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_ContinueCmd -
*
* 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_ContinueCmd(dummy, interp, argc, argv)
ClientData dummy; /* Not used. */
Tcl_Interp *interp; /* Current interpreter. */
int argc; /* Number of arguments. */
char **argv; /* Argument strings. */
{
if (argc != 1) {
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
"\"", (char *) NULL);
return TCL_ERROR;
}
return TCL_CONTINUE;
}
/*
*----------------------------------------------------------------------
*
* 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. */
{
Interp *iPtr = (Interp *) interp;
register Tcl_Obj *namePtr;
char *info;
int infoLen;
if ((objc < 2) || (objc > 4)) {
Tcl_WrongNumArgs(interp, 1, objv, "message ?errorInfo? ?errorCode?");
return TCL_ERROR;
}
if (objc >= 3) { /* process the optional info argument */
info = Tcl_GetStringFromObj(objv[2], &infoLen);
if (*info != 0) {
Tcl_AddObjErrorInfo(interp, info, infoLen);
iPtr->flags |= ERR_ALREADY_LOGGED;
}
}
if (objc == 4) {
namePtr = Tcl_NewStringObj("errorCode", -1);
Tcl_ObjSetVar2(interp, namePtr, (Tcl_Obj *) NULL, objv[3],
TCL_GLOBAL_ONLY);
iPtr->flags |= ERROR_CODE_SET;
Tcl_DecrRefCount(namePtr); /* we're done with name object */
}
Tcl_SetObjResult(interp, objv[1]);
return TCL_ERROR;
}
/*
*----------------------------------------------------------------------
*
* 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_EvalObj(interp, objv[1]);
} else {
/*
* More than one argument: concatenate them together with spaces
* between, then evaluate the result.
*/
objPtr = Tcl_ConcatObj(objc-1, objv+1);
result = Tcl_EvalObj(interp, objPtr);
Tcl_DecrRefCount(objPtr); /* we're done with the object */
}
if (result == TCL_ERROR) {
char msg[60];
sprintf(msg, "\n (\"eval\" body line %d)", interp->errorLine);
Tcl_AddObjErrorInfo(interp, msg, -1);
}
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;
register char *bytes;
int length, i, result;
if (objc < 2) {
Tcl_WrongNumArgs(interp, 1, objv, "arg ?arg ...?");
return TCL_ERROR;
}
if (objc == 2) {
result = Tcl_ExprObj(interp, objv[1], &resultPtr);
if (result == TCL_OK) {
Tcl_SetObjResult(interp, resultPtr);
Tcl_DecrRefCount(resultPtr); /* done with the result object */
}
return result;
}
/*
* Create a new object holding the concatenated argument strings.
* THIS FAILS IF AN OBJECT'S STRING REP HAS A NULL BYTE.
*/
bytes = Tcl_GetStringFromObj(objv[1], &length);
objPtr = Tcl_NewStringObj(bytes, length);
Tcl_IncrRefCount(objPtr);
for (i = 2; i < objc; i++) {
Tcl_AppendToObj(objPtr, " ", 1);
bytes = Tcl_GetStringFromObj(objv[i], &length);
Tcl_AppendToObj(objPtr, bytes, length);
}
/*
* Evaluate the concatenated string object.
*/
result = Tcl_ExprObj(interp, objPtr, &resultPtr);
if (result == TCL_OK) {
Tcl_SetObjResult(interp, resultPtr);
Tcl_DecrRefCount(resultPtr); /* done with the result object */
}
/*
* Free allocated resources.
*/
Tcl_DecrRefCount(objPtr);
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, WHICH COULD THEORETICALLY HAPPEN ON A MAC.
*
* 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. */
{
char *fileName, *extension, *errorString;
int statOp = 0; /* Init. to avoid compiler warning. */
int length;
int mode = 0; /* Initialized only to prevent
* compiler warning message. */
struct stat statBuf;
Tcl_DString buffer;
Tcl_Obj *resultPtr;
int index, result;
/*
* This list of constants should match the fileOption string array below.
*/
enum {FILE_ATIME, FILE_ATTRIBUTES, FILE_COPY, FILE_DELETE, FILE_DIRNAME,
FILE_EXECUTABLE, FILE_EXISTS, FILE_EXTENSION, FILE_ISDIRECTORY,
FILE_ISFILE, FILE_JOIN, FILE_LSTAT, FILE_MTIME, FILE_MKDIR,
FILE_NATIVENAME, FILE_OWNED, FILE_PATHTYPE, FILE_READABLE,
FILE_READLINK, FILE_RENAME, FILE_ROOTNAME, FILE_SIZE, FILE_SPLIT,
FILE_STAT, FILE_TAIL, FILE_TYPE, FILE_VOLUMES, FILE_WRITABLE};
static char *fileOptions[] = {"atime", "attributes", "copy", "delete",
"dirname", "executable", "exists", "extension", "isdirectory",
"isfile", "join", "lstat", "mtime", "mkdir", "nativename",
"owned", "pathtype", "readable", "readlink", "rename",
"rootname", "size", "split", "stat", "tail", "type", "volumes",
"writable", (char *) NULL};
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;
}
result = TCL_OK;
/*
* First, do the volumes command, since it is the only one that
* has objc == 2.
*/
if ( index == FILE_VOLUMES) {
if ( objc != 2 ) {
Tcl_WrongNumArgs(interp, 1, objv, "volumes");
return TCL_ERROR;
}
result = TclpListVolumes(interp);
return result;
}
if (objc < 3) {
Tcl_WrongNumArgs(interp, 2, objv, "name ?arg ...?");
return TCL_ERROR;
}
Tcl_DStringInit(&buffer);
resultPtr = Tcl_GetObjResult(interp);
/*
* Handle operations on the file name.
*/
switch (index) {
case FILE_ATTRIBUTES:
result = TclFileAttrsCmd(interp, objc - 2, objv + 2);
goto done;
case FILE_DIRNAME: {
int pargc;
char **pargv;
if (objc != 3) {
errorString = "dirname name";
goto not3Args;
}
fileName = Tcl_GetStringFromObj(objv[2], &length);
/*
* If there is only one element, and it starts with a tilde,
* perform tilde substitution and resplit the path.
*/
Tcl_SplitPath(fileName, &pargc, &pargv);
if ((pargc == 1) && (*fileName == '~')) {
ckfree((char*) pargv);
fileName = Tcl_TranslateFileName(interp, fileName, &buffer);
if (fileName == NULL) {
result = TCL_ERROR;
goto done;
}
Tcl_SplitPath(fileName, &pargc, &pargv);
Tcl_DStringSetLength(&buffer, 0);
}
/*
* Return all but the last component. If there is only one
* component, return it if the path was non-relative, otherwise
* return the current directory.
*/
if (pargc > 1) {
Tcl_JoinPath(pargc-1, pargv, &buffer);
Tcl_SetStringObj(resultPtr, Tcl_DStringValue(&buffer),
buffer.length);
} else if ((pargc == 0)
|| (Tcl_GetPathType(pargv[0]) == TCL_PATH_RELATIVE)) {
Tcl_SetStringObj(resultPtr, (tclPlatform == TCL_PLATFORM_MAC)
? ":" : ".", 1);
} else {
Tcl_SetStringObj(resultPtr, pargv[0], -1); }
ckfree((char *)pargv);
goto done;
}
case FILE_TAIL: {
int pargc;
char **pargv;
if (objc != 3) {
errorString = "tail name";
goto not3Args;
}
fileName = Tcl_GetStringFromObj(objv[2], &length);
/*
* If there is only one element, and it starts with a tilde,
* perform tilde substitution and resplit the path.
*/
Tcl_SplitPath(fileName, &pargc, &pargv);
if ((pargc == 1) && (*fileName == '~')) {
ckfree((char*) pargv);
fileName = Tcl_TranslateFileName(interp, fileName, &buffer);
if (fileName == NULL) {
result = TCL_ERROR;
goto done;
}
Tcl_SplitPath(fileName, &pargc, &pargv);
Tcl_DStringSetLength(&buffer, 0);
}
/*
* Return the last component, unless it is the only component,
* and it is the root of an absolute path.
*/
if (pargc > 0) {
if ((pargc > 1)
|| (Tcl_GetPathType(pargv[0]) == TCL_PATH_RELATIVE)) {
Tcl_SetStringObj(resultPtr, pargv[pargc - 1], -1);
}
}
ckfree((char *)pargv);
goto done;
}
case FILE_ROOTNAME: {
char *fileName;
if (objc != 3) {
errorString = "rootname name";
goto not3Args;
}
fileName = Tcl_GetStringFromObj(objv[2], &length);
extension = TclGetExtension(fileName);
if (extension == NULL) {
Tcl_SetObjResult(interp, objv[2]);
} else {
Tcl_SetStringObj(resultPtr, fileName,
(int) (length - strlen(extension)));
}
goto done;
}
case FILE_EXTENSION:
if (objc != 3) {
errorString = "extension name";
goto not3Args;
}
extension = TclGetExtension(Tcl_GetStringFromObj(objv[2],&length));
if (extension != NULL) {
Tcl_SetStringObj(resultPtr, extension, (int)strlen(extension));
}
goto done;
case FILE_PATHTYPE:
if (objc != 3) {
errorString = "pathtype name";
goto not3Args;
}
switch (Tcl_GetPathType(Tcl_GetStringFromObj(objv[2], &length))) {
case TCL_PATH_ABSOLUTE:
Tcl_SetStringObj(resultPtr, "absolute", -1);
break;
case TCL_PATH_RELATIVE:
Tcl_SetStringObj(resultPtr, "relative", -1);
break;
case TCL_PATH_VOLUME_RELATIVE:
Tcl_SetStringObj(resultPtr, "volumerelative", -1);
break;
}
goto done;
case FILE_SPLIT: {
int pargc, i;
char **pargvList;
Tcl_Obj *listObjPtr;
if (objc != 3) {
errorString = "split name";
goto not3Args;
}
Tcl_SplitPath(Tcl_GetStringFromObj(objv[2], &length), &pargc,
&pargvList);
listObjPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL);
for (i = 0; i < pargc; i++) {
Tcl_ListObjAppendElement(interp, listObjPtr,
Tcl_NewStringObj(pargvList[i], -1));
}
ckfree((char *) pargvList);
Tcl_SetObjResult(interp, listObjPtr);
goto done;
}
case FILE_JOIN: {
char **pargv = (char **) ckalloc((objc - 2) * sizeof(char *));
int i;
for (i = 2; i < objc; i++) {
pargv[i - 2] = Tcl_GetStringFromObj(objv[i], &length);
}
Tcl_JoinPath(objc - 2, pargv, &buffer);
Tcl_SetStringObj(resultPtr, Tcl_DStringValue(&buffer),
buffer.length);
ckfree((char *) pargv);
Tcl_DStringFree(&buffer);
goto done;
}
case FILE_RENAME: {
char **pargv = (char **) ckalloc(objc * sizeof(char *));
int i;
for (i = 0; i < objc; i++) {
pargv[i] = Tcl_GetStringFromObj(objv[i], &length);
}
result = TclFileRenameCmd(interp, objc, pargv);
ckfree((char *) pargv);
goto done;
}
case FILE_MKDIR: {
char **pargv = (char **) ckalloc(objc * sizeof(char *));
int i;
for (i = 0; i < objc; i++) {
pargv[i] = Tcl_GetStringFromObj(objv[i], &length);
}
result = TclFileMakeDirsCmd(interp, objc, pargv);
ckfree((char *) pargv);
goto done;
}
case FILE_DELETE: {
char **pargv = (char **) ckalloc(objc * sizeof(char *));
int i;
for (i = 0; i < objc; i++) {
pargv[i] = Tcl_GetStringFromObj(objv[i], &length);
}
result = TclFileDeleteCmd(interp, objc, pargv);
ckfree((char *) pargv);
goto done;
}
case FILE_COPY: {
char **pargv = (char **) ckalloc(objc * sizeof(char *));
int i;
for (i = 0; i < objc; i++) {
pargv[i] = Tcl_GetStringFromObj(objv[i], &length);
}
result = TclFileCopyCmd(interp, objc, pargv);
ckfree((char *) pargv);
goto done;
}
case FILE_NATIVENAME:
fileName = Tcl_TranslateFileName(interp,
Tcl_GetStringFromObj(objv[2], &length), &buffer);
if (fileName == NULL) {
result = TCL_ERROR ;
} else {
Tcl_SetStringObj(resultPtr, fileName, -1);
}
goto done;
}
/*
* Next, handle operations that can be satisfied with the "access"
* kernel call.
*/
fileName = Tcl_TranslateFileName(interp,
Tcl_GetStringFromObj(objv[2], &length), &buffer);
switch (index) {
case FILE_READABLE:
if (objc != 3) {
errorString = "readable name";
goto not3Args;
}
mode = R_OK;
checkAccess:
/*
* The result might have been set within Tcl_TranslateFileName
* (like no such user "blah" for file exists ~blah)
* but we don't want to flag an error in that case.
*/
if (fileName == NULL) {
Tcl_SetObjResult(interp, Tcl_NewBooleanObj(0));
} else {
Tcl_SetBooleanObj(resultPtr, (TclAccess(fileName, mode) != -1));
}
goto done;
case FILE_WRITABLE:
if (objc != 3) {
errorString = "writable name";
goto not3Args;
}
mode = W_OK;
goto checkAccess;
case FILE_EXECUTABLE:
if (objc != 3) {
errorString = "executable name";
goto not3Args;
}
mode = X_OK;
goto checkAccess;
case FILE_EXISTS:
if (objc != 3) {
errorString = "exists name";
goto not3Args;
}
mode = F_OK;
goto checkAccess;
}
/*
* Lastly, check stuff that requires the file to be stat-ed.
*/
if (fileName == NULL) {
result = TCL_ERROR;
goto done;
}
switch (index) {
case FILE_ATIME:
if (objc != 3) {
errorString = "atime name";
goto not3Args;
}
if (TclStat(fileName, &statBuf) == -1) {
goto badStat;
}
Tcl_SetLongObj(resultPtr, (long) statBuf.st_atime);
goto done;
case FILE_ISDIRECTORY:
if (objc != 3) {
errorString = "isdirectory name";
goto not3Args;
}
statOp = 2;
break;
case FILE_ISFILE:
if (objc != 3) {
errorString = "isfile name";
goto not3Args;
}
statOp = 1;
break;
case FILE_LSTAT:
if (objc != 4) {
Tcl_WrongNumArgs(interp, 1, objv, "lstat name varName");
result = TCL_ERROR;
goto done;
}
if (lstat(fileName, &statBuf) == -1) {
Tcl_AppendStringsToObj(resultPtr, "couldn't lstat \"",
Tcl_GetStringFromObj(objv[2], &length), "\": ",
Tcl_PosixError(interp), (char *) NULL);
result = TCL_ERROR;
goto done;
}
result = StoreStatData(interp, Tcl_GetStringFromObj(objv[3],
&length), &statBuf);
goto done;
case FILE_MTIME:
if (objc != 3) {
errorString = "mtime name";
goto not3Args;
}
if (TclStat(fileName, &statBuf) == -1) {
goto badStat;
}
Tcl_SetLongObj(resultPtr, (long) statBuf.st_mtime);
goto done;
case FILE_OWNED:
if (objc != 3) {
errorString = "owned name";
goto not3Args;
}
statOp = 0;
break;
case FILE_READLINK: {
char linkValue[MAXPATHLEN + 1];
int linkLength;
if (objc != 3) {
errorString = "readlink name";
goto not3Args;
}
/*
* If S_IFLNK isn't defined it means that the machine doesn't
* support symbolic links, so the file can't possibly be a
* symbolic link. Generate an EINVAL error, which is what
* happens on machines that do support symbolic links when
* you invoke readlink on a file that isn't a symbolic link.
*/
#ifndef S_IFLNK
linkLength = -1;
errno = EINVAL;
#else
linkLength = readlink(fileName, linkValue, sizeof(linkValue) - 1);
#endif /* S_IFLNK */
if (linkLength == -1) {
Tcl_AppendStringsToObj(resultPtr, "couldn't readlink \"",
Tcl_GetStringFromObj(objv[2], &length), "\": ",
Tcl_PosixError(interp), (char *) NULL);
result = TCL_ERROR;
goto done;
}
linkValue[linkLength] = 0;
Tcl_SetStringObj(resultPtr, linkValue, linkLength);
goto done;
}
case FILE_SIZE:
if (objc != 3) {
errorString = "size name";
goto not3Args;
}
if (TclStat(fileName, &statBuf) == -1) {
goto badStat;
}
Tcl_SetLongObj(resultPtr, (long) statBuf.st_size);
goto done;
case FILE_STAT:
if (objc != 4) {
Tcl_WrongNumArgs(interp, 1, objv, "stat name varName");
result = TCL_ERROR;
goto done;
}
if (TclStat(fileName, &statBuf) == -1) {
badStat:
Tcl_AppendStringsToObj(resultPtr, "couldn't stat \"",
Tcl_GetStringFromObj(objv[2], &length),
"\": ", Tcl_PosixError(interp), (char *) NULL);
result = TCL_ERROR;
goto done;
}
result = StoreStatData(interp, Tcl_GetStringFromObj(objv[3],
&length), &statBuf);
goto done;
case FILE_TYPE:
if (objc != 3) {
errorString = "type name";
goto not3Args;
}
if (lstat(fileName, &statBuf) == -1) {
goto badStat;
}
errorString = GetTypeFromMode((int) statBuf.st_mode);
Tcl_SetStringObj(resultPtr, errorString, -1);
goto done;
}
if (TclStat(fileName, &statBuf) == -1) {
Tcl_SetBooleanObj(resultPtr, 0);
goto done;
}
switch (statOp) {
case 0:
/*
* For Windows, OS/2 and Macintosh, there are no user ids
* associated with a file, so we always return 1.
*/
#if (defined(__WIN32__) || defined(MAC_TCL) || defined(__OS2__))
mode = 1;
#else
mode = (geteuid() == statBuf.st_uid);
#endif
break;
case 1:
mode = S_ISREG(statBuf.st_mode);
break;
case 2:
mode = S_ISDIR(statBuf.st_mode);
break;
}
Tcl_SetBooleanObj(resultPtr, mode);
done:
Tcl_DStringFree(&buffer);
return result;
not3Args:
Tcl_WrongNumArgs(interp, 1, objv, errorString);
result = TCL_ERROR;
goto done;
}
/*
*----------------------------------------------------------------------
*
* 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->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. */
char *varName; /* Name of associative array variable
* in which to store stat results. */
struct stat *statPtr; /* Pointer to buffer containing
* stat data to store in varName. */
{
char string[30];
sprintf(string, "%ld", (long) statPtr->st_dev);
if (Tcl_SetVar2(interp, varName, "dev", string, TCL_LEAVE_ERR_MSG)
== NULL) {
return TCL_ERROR;
}
sprintf(string, "%ld", (long) statPtr->st_ino);
if (Tcl_SetVar2(interp, varName, "ino", string, TCL_LEAVE_ERR_MSG)
== NULL) {
return TCL_ERROR;
}
sprintf(string, "%ld", (long) statPtr->st_mode);
if (Tcl_SetVar2(interp, varName, "mode", string, TCL_LEAVE_ERR_MSG)
== NULL) {
return TCL_ERROR;
}
sprintf(string, "%ld", (long) statPtr->st_nlink);
if (Tcl_SetVar2(interp, varName, "nlink", string, TCL_LEAVE_ERR_MSG)
== NULL) {
return TCL_ERROR;
}
sprintf(string, "%ld", (long) statPtr->st_uid);
if (Tcl_SetVar2(interp, varName, "uid", string, TCL_LEAVE_ERR_MSG)
== NULL) {
return TCL_ERROR;
}
sprintf(string, "%ld", (long) statPtr->st_gid);
if (Tcl_SetVar2(interp, varName, "gid", string, TCL_LEAVE_ERR_MSG)
== NULL) {
return TCL_ERROR;
}
sprintf(string, "%lu", (unsigned long) statPtr->st_size);
if (Tcl_SetVar2(interp, varName, "size", string, TCL_LEAVE_ERR_MSG)
== NULL) {
return TCL_ERROR;
}
sprintf(string, "%ld", (long) statPtr->st_atime);
if (Tcl_SetVar2(interp, varName, "atime", string, TCL_LEAVE_ERR_MSG)
== NULL) {
return TCL_ERROR;
}
sprintf(string, "%ld", (long) statPtr->st_mtime);
if (Tcl_SetVar2(interp, varName, "mtime", string, TCL_LEAVE_ERR_MSG)
== NULL) {
return TCL_ERROR;
}
sprintf(string, "%ld", (long) statPtr->st_ctime);
if (Tcl_SetVar2(interp, varName, "ctime", string, TCL_LEAVE_ERR_MSG)
== NULL) {
return TCL_ERROR;
}
if (Tcl_SetVar2(interp, varName, "type",
GetTypeFromMode((int) statPtr->st_mode), TCL_LEAVE_ERR_MSG)
== NULL) {
return TCL_ERROR;
}
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_ForCmd --
*
* 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_ForCmd(dummy, interp, argc, argv)
ClientData dummy; /* Not used. */
Tcl_Interp *interp; /* Current interpreter. */
int argc; /* Number of arguments. */
char **argv; /* Argument strings. */
{
int result, value;
if (argc != 5) {
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
" start test next command\"", (char *) NULL);
return TCL_ERROR;
}
result = Tcl_Eval(interp, argv[1]);
if (result != TCL_OK) {
if (result == TCL_ERROR) {
Tcl_AddErrorInfo(interp, "\n (\"for\" initial command)");
}
return result;
}
while (1) {
result = Tcl_ExprBoolean(interp, argv[2], &value);
if (result != TCL_OK) {
return result;
}
if (!value) {
break;
}
result = Tcl_Eval(interp, argv[4]);
if ((result != TCL_OK) && (result != TCL_CONTINUE)) {
if (result == TCL_ERROR) {
char msg[60];
sprintf(msg, "\n (\"for\" body line %d)",interp->errorLine);
Tcl_AddErrorInfo(interp, msg);
}
break;
}
result = Tcl_Eval(interp, argv[3]);
if (result == TCL_BREAK) {
break;
} else if (result != TCL_OK) {
if (result == TCL_ERROR) {
Tcl_AddErrorInfo(interp, "\n (\"for\" loop-end command)");
}
return result;
}
}
if (result == TCL_BREAK) {
result = TCL_OK;
}
if (result == TCL_OK) {
Tcl_ResetResult(interp);
}
return result;
}
/*
*----------------------------------------------------------------------
*
* Tcl_ForeachObjCmd --
*
* This object-based procedure is invoked to process the "foreach" Tcl
* command. See the user documentation for details on what it does.
*
* Results:
* A standard Tcl object result.
*
* Side effects:
* See the user documentation.
*
*----------------------------------------------------------------------
*/
/* ARGSUSED */
int
Tcl_ForeachObjCmd(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]; /* Array of value list indices */
int varcListArray[STATIC_LIST_SIZE]; /* # loop variables per list */
Tcl_Obj **varvListArray[STATIC_LIST_SIZE]; /* Array of var name lists */
int argcListArray[STATIC_LIST_SIZE]; /* Array of value list sizes */
Tcl_Obj **argvListArray[STATIC_LIST_SIZE]; /* Array of value lists */
int *index = indexArray;
int *varcList = varcListArray;
Tcl_Obj ***varvList = varvListArray;
int *argcList = argcListArray;
Tcl_Obj ***argvList = argvListArray;
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]
* 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
* THIS FAILS IF THE OBJECT'S STRING REP HAS A NULL BYTE.
*/
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_AppendToObj(Tcl_GetObjResult(interp),
"foreach varlist is empty", -1);
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++) {
/*
* If a variable or value list object has been converted to
* another kind of Tcl object, convert it back to a list object
* and refetch the pointer to its element array.
*/
if (argObjv[1+i*2]->typePtr != &tclListType) {
result = Tcl_ListObjGetElements(interp, argObjv[1+i*2],
&varcList[i], &varvList[i]);
if (result != TCL_OK) {
panic("Tcl_ForeachObjCmd: could not reconvert variable list %d to a list object\n", i);
}
}
if (argObjv[2+i*2]->typePtr != &tclListType) {
result = Tcl_ListObjGetElements(interp, argObjv[2+i*2],
&argcList[i], &argvList[i]);
if (result != TCL_OK) {
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, TCL_PARSE_PART1);
if (varValuePtr == NULL) {
if (isEmptyObj) {
Tcl_DecrRefCount(valuePtr);
}
Tcl_ResetResult(interp);
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
"couldn't set loop variable: \"",
Tcl_GetStringFromObj(varvList[i][v], (int *) NULL),
"\"", (char *) NULL);
result = TCL_ERROR;
goto done;
}
}
}
result = Tcl_EvalObj(interp, bodyPtr);
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) {
char msg[100];
sprintf(msg, "\n (\"foreach\" body line %d)",
interp->errorLine);
Tcl_AddObjErrorInfo(interp, msg, -1);
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. */
{
register 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[40]; /* 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. */
int 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. */
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 PTR_VALUE 1
# define DOUBLE_VALUE 2
# define MAX_FLOAT_SIZE 320
Tcl_Obj *resultPtr; /* Where result is stored finally. */
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. */
/*
* 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.
* 2. 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).
* So, what happens here is to scan the format string one % group
* at a time, making many individual calls to sprintf.
*/
if (objc < 2) {
Tcl_WrongNumArgs(interp, 1, objv,
"formatString ?arg arg ...?");
return TCL_ERROR;
}
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;
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))) {
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);
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 == '+')) {
*newPtr = *format;
newPtr++;
format++;
}
if (isdigit(UCHAR(*format))) {
width = strtoul(format, &end, 10);
format = end;
} else if (*format == '*') {
if (objIndex >= objc) {
goto badIndex;
}
if (Tcl_GetIntFromObj(interp, objv[objIndex],
&width) != TCL_OK) {
goto fmtError;
}
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);
while (*newPtr != 0) {
newPtr++;
}
}
if (*format == '.') {
*newPtr = '.';
newPtr++;
format++;
}
if (isdigit(UCHAR(*format))) {
precision = strtoul(format, &end, 10);
format = end;
} else if (*format == '*') {
if (objIndex >= objc) {
goto badIndex;
}
if (Tcl_GetIntFromObj(interp, objv[objIndex],
&precision) != TCL_OK) {
goto fmtError;
}
objIndex++;
format++;
}
if (precision != 0) {
TclFormatInt(newPtr, precision);
while (*newPtr != 0) {
newPtr++;
}
}
if (*format == 'l') {
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 (Tcl_GetIntFromObj(interp, objv[objIndex],
(int *) &intValue) != TCL_OK) {
goto fmtError;
}
whichValue = INT_VALUE;
size = 40 + precision;
break;
case 's':
ptrValue = Tcl_GetStringFromObj(objv[objIndex], &size);
break;
case 'c':
if (Tcl_GetIntFromObj(interp, objv[objIndex],
(int *) &intValue) != TCL_OK) {
goto fmtError;
}
whichValue = INT_VALUE;
size = 1;
break;
case 'e':
case 'E':
case 'f':
case 'g':
case 'G':
if (Tcl_GetDoubleFromObj(interp, objv[objIndex],
&doubleValue) != TCL_OK) {
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;
}
if (whichValue == DOUBLE_VALUE) {
sprintf(dst, newFormat, doubleValue);
} else if (whichValue == INT_VALUE) {
if (useShort) {
sprintf(dst, newFormat, (short) intValue);
} else {
sprintf(dst, newFormat, intValue);
}
} else {
sprintf(dst, newFormat, ptrValue);
}
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;
}