1679 lines
41 KiB
C
1679 lines
41 KiB
C
/*
|
||
* 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) 1994-1996 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 1.107 96/04/09 17:14:39
|
||
*/
|
||
|
||
#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.
|
||
*
|
||
* 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_CaseCmd --
|
||
*
|
||
* This procedure is invoked to process the "case" 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_CaseCmd(dummy, interp, argc, argv)
|
||
ClientData dummy; /* Not used. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
int i, result;
|
||
int body;
|
||
char *string;
|
||
int caseArgc, splitArgs;
|
||
char **caseArgv;
|
||
|
||
if (argc < 3) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"",
|
||
argv[0], " string ?in? patList body ... ?default body?\"",
|
||
(char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
string = argv[1];
|
||
body = -1;
|
||
if (strcmp(argv[2], "in") == 0) {
|
||
i = 3;
|
||
} else {
|
||
i = 2;
|
||
}
|
||
caseArgc = argc - i;
|
||
caseArgv = argv + i;
|
||
|
||
/*
|
||
* If all of the pattern/command pairs are lumped into a single
|
||
* argument, split them out again.
|
||
*/
|
||
|
||
splitArgs = 0;
|
||
if (caseArgc == 1) {
|
||
result = Tcl_SplitList(interp, caseArgv[0], &caseArgc, &caseArgv);
|
||
if (result != TCL_OK) {
|
||
return result;
|
||
}
|
||
splitArgs = 1;
|
||
}
|
||
|
||
for (i = 0; i < caseArgc; i += 2) {
|
||
int patArgc, j;
|
||
char **patArgv;
|
||
register char *p;
|
||
|
||
if (i == (caseArgc-1)) {
|
||
interp->result = "extra case pattern with no body";
|
||
result = TCL_ERROR;
|
||
goto cleanup;
|
||
}
|
||
|
||
/*
|
||
* Check for special case of single pattern (no list) with
|
||
* no backslash sequences.
|
||
*/
|
||
|
||
for (p = caseArgv[i]; *p != 0; p++) {
|
||
if (isspace(UCHAR(*p)) || (*p == '\\')) {
|
||
break;
|
||
}
|
||
}
|
||
if (*p == 0) {
|
||
if ((*caseArgv[i] == 'd')
|
||
&& (strcmp(caseArgv[i], "default") == 0)) {
|
||
body = i+1;
|
||
}
|
||
if (Tcl_StringMatch(string, caseArgv[i])) {
|
||
body = i+1;
|
||
goto match;
|
||
}
|
||
continue;
|
||
}
|
||
|
||
/*
|
||
* Break up pattern lists, then check each of the patterns
|
||
* in the list.
|
||
*/
|
||
|
||
result = Tcl_SplitList(interp, caseArgv[i], &patArgc, &patArgv);
|
||
if (result != TCL_OK) {
|
||
goto cleanup;
|
||
}
|
||
for (j = 0; j < patArgc; j++) {
|
||
if (Tcl_StringMatch(string, patArgv[j])) {
|
||
body = i+1;
|
||
break;
|
||
}
|
||
}
|
||
ckfree((char *) patArgv);
|
||
if (j < patArgc) {
|
||
break;
|
||
}
|
||
}
|
||
|
||
match:
|
||
if (body != -1) {
|
||
result = Tcl_Eval(interp, caseArgv[body]);
|
||
if (result == TCL_ERROR) {
|
||
char msg[100];
|
||
sprintf(msg, "\n (\"%.50s\" arm line %d)", caseArgv[body-1],
|
||
interp->errorLine);
|
||
Tcl_AddErrorInfo(interp, msg);
|
||
}
|
||
goto cleanup;
|
||
}
|
||
|
||
/*
|
||
* Nothing matched: return nothing.
|
||
*/
|
||
|
||
result = TCL_OK;
|
||
|
||
cleanup:
|
||
if (splitArgs) {
|
||
ckfree((char *) caseArgv);
|
||
}
|
||
return result;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* Tcl_CatchCmd --
|
||
*
|
||
* This procedure is invoked to process the "catch" 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_CatchCmd(dummy, interp, argc, argv)
|
||
ClientData dummy; /* Not used. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
int result;
|
||
|
||
if ((argc != 2) && (argc != 3)) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"",
|
||
argv[0], " command ?varName?\"", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
result = Tcl_Eval(interp, argv[1]);
|
||
if (argc == 3) {
|
||
if (Tcl_SetVar(interp, argv[2], interp->result, 0) == NULL) {
|
||
Tcl_SetResult(interp, "couldn't save command result in variable",
|
||
TCL_STATIC);
|
||
return TCL_ERROR;
|
||
}
|
||
}
|
||
Tcl_ResetResult(interp);
|
||
sprintf(interp->result, "%d", result);
|
||
return TCL_OK;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* Tcl_CdCmd --
|
||
*
|
||
* 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_CdCmd(dummy, interp, argc, argv)
|
||
ClientData dummy; /* Not used. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
char *dirName;
|
||
Tcl_DString buffer;
|
||
int result;
|
||
|
||
if (argc > 2) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
|
||
" dirName\"", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
if (argc == 2) {
|
||
dirName = argv[1];
|
||
} else {
|
||
dirName = "~";
|
||
}
|
||
dirName = Tcl_TranslateFileName(interp, dirName, &buffer);
|
||
if (dirName == NULL) {
|
||
return TCL_ERROR;
|
||
}
|
||
result = TclChdir(interp, dirName);
|
||
Tcl_DStringFree(&buffer);
|
||
return result;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* Tcl_ConcatCmd --
|
||
*
|
||
* This procedure is invoked to process the "concat" 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_ConcatCmd(dummy, interp, argc, argv)
|
||
ClientData dummy; /* Not used. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
if (argc >= 2) {
|
||
interp->result = Tcl_Concat(argc-1, argv+1);
|
||
interp->freeProc = TCL_DYNAMIC;
|
||
}
|
||
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.
|
||
*
|
||
* 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_ErrorCmd --
|
||
*
|
||
* This procedure is invoked to process the "error" 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_ErrorCmd(dummy, interp, argc, argv)
|
||
ClientData dummy; /* Not used. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
Interp *iPtr = (Interp *) interp;
|
||
|
||
if ((argc < 2) || (argc > 4)) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
|
||
" message ?errorInfo? ?errorCode?\"", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
if ((argc >= 3) && (argv[2][0] != 0)) {
|
||
Tcl_AddErrorInfo(interp, argv[2]);
|
||
iPtr->flags |= ERR_ALREADY_LOGGED;
|
||
}
|
||
if (argc == 4) {
|
||
Tcl_SetVar2(interp, "errorCode", (char *) NULL, argv[3],
|
||
TCL_GLOBAL_ONLY);
|
||
iPtr->flags |= ERROR_CODE_SET;
|
||
}
|
||
Tcl_SetResult(interp, argv[1], TCL_VOLATILE);
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* Tcl_EvalCmd --
|
||
*
|
||
* This procedure is invoked to process the "eval" 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_EvalCmd(dummy, interp, argc, argv)
|
||
ClientData dummy; /* Not used. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
int result;
|
||
char *cmd;
|
||
|
||
if (argc < 2) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
|
||
" arg ?arg ...?\"", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
if (argc == 2) {
|
||
result = Tcl_Eval(interp, argv[1]);
|
||
} else {
|
||
|
||
/*
|
||
* More than one argument: concatenate them together with spaces
|
||
* between, then evaluate the result.
|
||
*/
|
||
|
||
cmd = Tcl_Concat(argc-1, argv+1);
|
||
result = Tcl_Eval(interp, cmd);
|
||
ckfree(cmd);
|
||
}
|
||
if (result == TCL_ERROR) {
|
||
char msg[60];
|
||
sprintf(msg, "\n (\"eval\" body line %d)", interp->errorLine);
|
||
Tcl_AddErrorInfo(interp, msg);
|
||
}
|
||
return result;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* Tcl_ExitCmd --
|
||
*
|
||
* This procedure is invoked to process the "exit" 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_ExitCmd(dummy, interp, argc, argv)
|
||
ClientData dummy; /* Not used. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
int value;
|
||
|
||
if ((argc != 1) && (argc != 2)) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
|
||
" ?returnCode?\"", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
if (argc == 1) {
|
||
value = 0;
|
||
} else if (Tcl_GetInt(interp, argv[1], &value) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
Tcl_Exit(value);
|
||
/*NOTREACHED*/
|
||
return TCL_OK; /* Better not ever reach this! */
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* Tcl_ExprCmd --
|
||
*
|
||
* This procedure is invoked to process the "expr" 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_ExprCmd(dummy, interp, argc, argv)
|
||
ClientData dummy; /* Not used. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
Tcl_DString buffer;
|
||
int i, result;
|
||
|
||
if (argc < 2) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
|
||
" arg ?arg ...?\"", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
if (argc == 2) {
|
||
return Tcl_ExprString(interp, argv[1]);
|
||
}
|
||
Tcl_DStringInit(&buffer);
|
||
Tcl_DStringAppend(&buffer, argv[1], -1);
|
||
for (i = 2; i < argc; i++) {
|
||
Tcl_DStringAppend(&buffer, " ", 1);
|
||
Tcl_DStringAppend(&buffer, argv[i], -1);
|
||
}
|
||
result = Tcl_ExprString(interp, buffer.string);
|
||
Tcl_DStringFree(&buffer);
|
||
return result;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* Tcl_FileCmd --
|
||
*
|
||
* This procedure is invoked to process the "file" 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_FileCmd(dummy, interp, argc, argv)
|
||
ClientData dummy; /* Not used. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
char *fileName, *extension;
|
||
int c, statOp, result;
|
||
size_t length;
|
||
int mode = 0; /* Initialized only to prevent
|
||
* compiler warning message. */
|
||
struct stat statBuf;
|
||
Tcl_DString buffer;
|
||
|
||
if (argc < 3) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
|
||
" option name ?arg ...?\"", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
c = argv[1][0];
|
||
length = strlen(argv[1]);
|
||
result = TCL_OK;
|
||
Tcl_DStringInit(&buffer);
|
||
|
||
/*
|
||
* First handle operations on the file name.
|
||
*/
|
||
|
||
if ((c == 'd') && (strncmp(argv[1], "dirname", length) == 0)) {
|
||
int pargc;
|
||
char **pargv;
|
||
|
||
if (argc != 3) {
|
||
argv[1] = "dirname";
|
||
goto not3Args;
|
||
}
|
||
|
||
fileName = argv[2];
|
||
|
||
/*
|
||
* 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_DStringResult(interp, &buffer);
|
||
} else if ((pargc == 0)
|
||
|| (Tcl_GetPathType(pargv[0]) == TCL_PATH_RELATIVE)) {
|
||
Tcl_SetResult(interp,
|
||
(tclPlatform == TCL_PLATFORM_MAC) ? ":" : ".", TCL_STATIC);
|
||
} else {
|
||
Tcl_SetResult(interp, pargv[0], TCL_VOLATILE);
|
||
}
|
||
ckfree((char *)pargv);
|
||
goto done;
|
||
|
||
} else if ((c == 't') && (strncmp(argv[1], "tail", length) == 0)
|
||
&& (length >= 2)) {
|
||
int pargc;
|
||
char **pargv;
|
||
|
||
if (argc != 3) {
|
||
argv[1] = "tail";
|
||
goto not3Args;
|
||
}
|
||
|
||
Tcl_SplitPath(argv[2], &pargc, &pargv);
|
||
if (pargc > 0) {
|
||
if ((pargc > 1)
|
||
|| (Tcl_GetPathType(pargv[0]) == TCL_PATH_RELATIVE)) {
|
||
Tcl_SetResult(interp, pargv[pargc-1], TCL_VOLATILE);
|
||
}
|
||
}
|
||
ckfree((char *)pargv);
|
||
goto done;
|
||
|
||
} else if ((c == 'r') && (strncmp(argv[1], "rootname", length) == 0)
|
||
&& (length >= 2)) {
|
||
char tmp;
|
||
if (argc != 3) {
|
||
argv[1] = "rootname";
|
||
goto not3Args;
|
||
}
|
||
extension = TclGetExtension(argv[2]);
|
||
if (extension == NULL) {
|
||
Tcl_SetResult(interp, argv[2], TCL_VOLATILE);
|
||
} else {
|
||
tmp = *extension;
|
||
*extension = 0;
|
||
Tcl_SetResult(interp, argv[2], TCL_VOLATILE);
|
||
*extension = tmp;
|
||
}
|
||
goto done;
|
||
} else if ((c == 'e') && (strncmp(argv[1], "extension", length) == 0)
|
||
&& (length >= 3)) {
|
||
if (argc != 3) {
|
||
argv[1] = "extension";
|
||
goto not3Args;
|
||
}
|
||
extension = TclGetExtension(argv[2]);
|
||
|
||
if (extension != NULL) {
|
||
Tcl_SetResult(interp, extension, TCL_VOLATILE);
|
||
}
|
||
goto done;
|
||
} else if ((c == 'p') && (strncmp(argv[1], "pathtype", length) == 0)) {
|
||
if (argc != 3) {
|
||
argv[1] = "pathtype";
|
||
goto not3Args;
|
||
}
|
||
switch (Tcl_GetPathType(argv[2])) {
|
||
case TCL_PATH_ABSOLUTE:
|
||
Tcl_SetResult(interp, "absolute", TCL_STATIC);
|
||
break;
|
||
case TCL_PATH_RELATIVE:
|
||
Tcl_SetResult(interp, "relative", TCL_STATIC);
|
||
break;
|
||
case TCL_PATH_VOLUME_RELATIVE:
|
||
Tcl_SetResult(interp, "volumerelative", TCL_STATIC);
|
||
break;
|
||
}
|
||
goto done;
|
||
} else if ((c == 's') && (strncmp(argv[1], "split", length) == 0)
|
||
&& (length >= 2)) {
|
||
int pargc, i;
|
||
char **pargvList;
|
||
|
||
if (argc != 3) {
|
||
argv[1] = "split";
|
||
goto not3Args;
|
||
}
|
||
|
||
Tcl_SplitPath(argv[2], &pargc, &pargvList);
|
||
for (i = 0; i < pargc; i++) {
|
||
Tcl_AppendElement(interp, pargvList[i]);
|
||
}
|
||
ckfree((char *) pargvList);
|
||
goto done;
|
||
} else if ((c == 'j') && (strncmp(argv[1], "join", length) == 0)) {
|
||
Tcl_JoinPath(argc-2, argv+2, &buffer);
|
||
Tcl_DStringResult(interp, &buffer);
|
||
goto done;
|
||
}
|
||
|
||
/*
|
||
* Next, handle operations that can be satisfied with the "access"
|
||
* kernel call.
|
||
*/
|
||
|
||
fileName = Tcl_TranslateFileName(interp, argv[2], &buffer);
|
||
if (fileName == NULL) {
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
if ((c == 'r') && (strncmp(argv[1], "readable", length) == 0)
|
||
&& (length >= 5)) {
|
||
if (argc != 3) {
|
||
argv[1] = "readable";
|
||
goto not3Args;
|
||
}
|
||
mode = R_OK;
|
||
checkAccess:
|
||
if (access(fileName, mode) == -1) {
|
||
interp->result = "0";
|
||
} else {
|
||
interp->result = "1";
|
||
}
|
||
goto done;
|
||
} else if ((c == 'w') && (strncmp(argv[1], "writable", length) == 0)) {
|
||
if (argc != 3) {
|
||
argv[1] = "writable";
|
||
goto not3Args;
|
||
}
|
||
mode = W_OK;
|
||
goto checkAccess;
|
||
} else if ((c == 'e') && (strncmp(argv[1], "executable", length) == 0)
|
||
&& (length >= 3)) {
|
||
if (argc != 3) {
|
||
argv[1] = "executable";
|
||
goto not3Args;
|
||
}
|
||
mode = X_OK;
|
||
goto checkAccess;
|
||
} else if ((c == 'e') && (strncmp(argv[1], "exists", length) == 0)
|
||
&& (length >= 3)) {
|
||
if (argc != 3) {
|
||
argv[1] = "exists";
|
||
goto not3Args;
|
||
}
|
||
mode = F_OK;
|
||
goto checkAccess;
|
||
}
|
||
|
||
/*
|
||
* Lastly, check stuff that requires the file to be stat-ed.
|
||
*/
|
||
|
||
if ((c == 'a') && (strncmp(argv[1], "atime", length) == 0)) {
|
||
if (argc != 3) {
|
||
argv[1] = "atime";
|
||
goto not3Args;
|
||
}
|
||
if (stat(fileName, &statBuf) == -1) {
|
||
goto badStat;
|
||
}
|
||
sprintf(interp->result, "%ld", (long) statBuf.st_atime);
|
||
goto done;
|
||
} else if ((c == 'i') && (strncmp(argv[1], "isdirectory", length) == 0)
|
||
&& (length >= 3)) {
|
||
if (argc != 3) {
|
||
argv[1] = "isdirectory";
|
||
goto not3Args;
|
||
}
|
||
statOp = 2;
|
||
} else if ((c == 'i') && (strncmp(argv[1], "isfile", length) == 0)
|
||
&& (length >= 3)) {
|
||
if (argc != 3) {
|
||
argv[1] = "isfile";
|
||
goto not3Args;
|
||
}
|
||
statOp = 1;
|
||
} else if ((c == 'l') && (strncmp(argv[1], "lstat", length) == 0)) {
|
||
if (argc != 4) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
|
||
" lstat name varName\"", (char *) NULL);
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
|
||
if (lstat(fileName, &statBuf) == -1) {
|
||
Tcl_AppendResult(interp, "couldn't lstat \"", argv[2],
|
||
"\": ", Tcl_PosixError(interp), (char *) NULL);
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
result = StoreStatData(interp, argv[3], &statBuf);
|
||
goto done;
|
||
} else if ((c == 'm') && (strncmp(argv[1], "mtime", length) == 0)) {
|
||
if (argc != 3) {
|
||
argv[1] = "mtime";
|
||
goto not3Args;
|
||
}
|
||
if (stat(fileName, &statBuf) == -1) {
|
||
goto badStat;
|
||
}
|
||
sprintf(interp->result, "%ld", (long) statBuf.st_mtime);
|
||
goto done;
|
||
} else if ((c == 'o') && (strncmp(argv[1], "owned", length) == 0)) {
|
||
if (argc != 3) {
|
||
argv[1] = "owned";
|
||
goto not3Args;
|
||
}
|
||
statOp = 0;
|
||
} else if ((c == 'r') && (strncmp(argv[1], "readlink", length) == 0)
|
||
&& (length >= 5)) {
|
||
char linkValue[MAXPATHLEN+1];
|
||
int linkLength;
|
||
|
||
if (argc != 3) {
|
||
argv[1] = "readlink";
|
||
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_AppendResult(interp, "couldn't readlink \"", argv[2],
|
||
"\": ", Tcl_PosixError(interp), (char *) NULL);
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
linkValue[linkLength] = 0;
|
||
Tcl_SetResult(interp, linkValue, TCL_VOLATILE);
|
||
goto done;
|
||
} else if ((c == 's') && (strncmp(argv[1], "size", length) == 0)
|
||
&& (length >= 2)) {
|
||
if (argc != 3) {
|
||
argv[1] = "size";
|
||
goto not3Args;
|
||
}
|
||
if (stat(fileName, &statBuf) == -1) {
|
||
goto badStat;
|
||
}
|
||
sprintf(interp->result, "%lu", (unsigned long) statBuf.st_size);
|
||
goto done;
|
||
} else if ((c == 's') && (strncmp(argv[1], "stat", length) == 0)
|
||
&& (length >= 2)) {
|
||
if (argc != 4) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
|
||
" stat name varName\"", (char *) NULL);
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
|
||
if (stat(fileName, &statBuf) == -1) {
|
||
badStat:
|
||
Tcl_AppendResult(interp, "couldn't stat \"", argv[2],
|
||
"\": ", Tcl_PosixError(interp), (char *) NULL);
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
result = StoreStatData(interp, argv[3], &statBuf);
|
||
goto done;
|
||
} else if ((c == 't') && (strncmp(argv[1], "type", length) == 0)
|
||
&& (length >= 2)) {
|
||
if (argc != 3) {
|
||
argv[1] = "type";
|
||
goto not3Args;
|
||
}
|
||
if (lstat(fileName, &statBuf) == -1) {
|
||
goto badStat;
|
||
}
|
||
interp->result = GetTypeFromMode((int) statBuf.st_mode);
|
||
goto done;
|
||
} else {
|
||
Tcl_AppendResult(interp, "bad option \"", argv[1],
|
||
"\": should be atime, dirname, executable, exists, ",
|
||
"extension, isdirectory, isfile, join, ",
|
||
"lstat, mtime, owned, pathtype, readable, readlink, ",
|
||
"root, size, split, stat, tail, type, ",
|
||
"or writable",
|
||
(char *) NULL);
|
||
result = TCL_ERROR;
|
||
goto done;
|
||
}
|
||
if (stat(fileName, &statBuf) == -1) {
|
||
interp->result = "0";
|
||
goto done;
|
||
}
|
||
switch (statOp) {
|
||
case 0:
|
||
/*
|
||
* For Windows and Macintosh, there are no user ids
|
||
* associated with a file, so we always return 1.
|
||
*/
|
||
|
||
#if (defined(__WIN32__) || defined(MAC_TCL))
|
||
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;
|
||
}
|
||
if (mode) {
|
||
interp->result = "1";
|
||
} else {
|
||
interp->result = "0";
|
||
}
|
||
|
||
done:
|
||
Tcl_DStringFree(&buffer);
|
||
return result;
|
||
|
||
not3Args:
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
|
||
" ", argv[1], " name\"", (char *) NULL);
|
||
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";
|
||
} else if (S_ISLNK(mode)) {
|
||
return "link";
|
||
} else if (S_ISSOCK(mode)) {
|
||
return "socket";
|
||
}
|
||
return "unknown";
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* Tcl_ForCmd --
|
||
*
|
||
* This procedure is invoked to process the "for" 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_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_ForeachCmd --
|
||
*
|
||
* This procedure is invoked to process the "foreach" 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_ForeachCmd(dummy, interp, argc, argv)
|
||
ClientData dummy; /* Not used. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
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 */
|
||
#define STATIC_SIZE 4
|
||
int indexArray[STATIC_SIZE]; /* Array of value list indices */
|
||
int varcListArray[STATIC_SIZE]; /* Number of loop variables per list */
|
||
char **varvListArray[STATIC_SIZE]; /* Array of variable name lists */
|
||
int argcListArray[STATIC_SIZE]; /* Array of value list sizes */
|
||
char **argvListArray[STATIC_SIZE]; /* Array of value lists */
|
||
|
||
int *index = indexArray;
|
||
int *varcList = varcListArray;
|
||
char ***varvList = varvListArray;
|
||
int *argcList = argcListArray;
|
||
char ***argvList = argvListArray;
|
||
|
||
if (argc < 4 || (argc%2 != 0)) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
|
||
" varList list ?varList list ...? command\"", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
/*
|
||
* 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 = (argc-2)/2;
|
||
if (numLists > STATIC_SIZE) {
|
||
index = (int *) ckalloc(numLists * sizeof(int));
|
||
varcList = (int *) ckalloc(numLists * sizeof(int));
|
||
varvList = (char ***) ckalloc(numLists * sizeof(char **));
|
||
argcList = (int *) ckalloc(numLists * sizeof(int));
|
||
argvList = (char ***) ckalloc(numLists * sizeof(char **));
|
||
}
|
||
for (i=0 ; i<numLists ; i++) {
|
||
index[i] = 0;
|
||
varcList[i] = 0;
|
||
varvList[i] = (char **)NULL;
|
||
argcList[i] = 0;
|
||
argvList[i] = (char **)NULL;
|
||
}
|
||
|
||
/*
|
||
* Break up the value lists and variable lists into elements
|
||
*/
|
||
|
||
maxj = 0;
|
||
for (i=0 ; i<numLists ; i++) {
|
||
result = Tcl_SplitList(interp, argv[1+i*2], &varcList[i], &varvList[i]);
|
||
if (result != TCL_OK) {
|
||
goto errorReturn;
|
||
}
|
||
result = Tcl_SplitList(interp, argv[2+i*2], &argcList[i], &argvList[i]);
|
||
if (result != TCL_OK) {
|
||
goto errorReturn;
|
||
}
|
||
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 ""
|
||
*/
|
||
for (j = 0; j < maxj; j++) {
|
||
for (i=0 ; i<numLists ; i++) {
|
||
for (v=0 ; v<varcList[i] ; v++) {
|
||
int k = index[i]++;
|
||
char *value = "";
|
||
if (k < argcList[i]) {
|
||
value = argvList[i][k];
|
||
}
|
||
if (Tcl_SetVar(interp, varvList[i][v], value, 0) == NULL) {
|
||
Tcl_AppendResult(interp, "couldn't set loop variable: \"",
|
||
varvList[i][v], "\"", (char *)NULL);
|
||
result = TCL_ERROR;
|
||
goto errorReturn;
|
||
}
|
||
}
|
||
}
|
||
|
||
result = Tcl_Eval(interp, argv[argc-1]);
|
||
if (result != TCL_OK) {
|
||
if (result == TCL_CONTINUE) {
|
||
result = TCL_OK;
|
||
} else if (result == TCL_BREAK) {
|
||
result = TCL_OK;
|
||
break;
|
||
} else if (result == TCL_ERROR) {
|
||
char msg[100];
|
||
sprintf(msg, "\n (\"foreach\" body line %d)",
|
||
interp->errorLine);
|
||
Tcl_AddErrorInfo(interp, msg);
|
||
break;
|
||
} else {
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
if (result == TCL_OK) {
|
||
Tcl_ResetResult(interp);
|
||
}
|
||
errorReturn:
|
||
for (i=0 ; i<numLists ; i++) {
|
||
if (argvList[i] != (char **)NULL) {
|
||
ckfree((char *) argvList[i]);
|
||
}
|
||
if (varvList[i] != (char **)NULL) {
|
||
ckfree((char *) varvList[i]);
|
||
}
|
||
}
|
||
if (numLists > STATIC_SIZE) {
|
||
ckfree((char *) index);
|
||
ckfree((char *) varcList);
|
||
ckfree((char *) argcList);
|
||
ckfree((char *) varvList);
|
||
ckfree((char *) argvList);
|
||
}
|
||
#undef STATIC_SIZE
|
||
return result;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* Tcl_FormatCmd --
|
||
*
|
||
* 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_FormatCmd(dummy, interp, argc, argv)
|
||
ClientData dummy; /* Not used. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
register char *format; /* Used to read characters from the format
|
||
* string. */
|
||
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
|
||
char *dst = interp->result; /* Where result is stored. Starts off at
|
||
* interp->resultSpace, but may get dynamically
|
||
* re-allocated if this isn't enough. */
|
||
int dstSize = 0; /* Number of non-null characters currently
|
||
* stored at dst. */
|
||
int dstSpace = TCL_RESULT_SIZE;
|
||
/* Total amount of storage space available
|
||
* in dst (not including null terminator. */
|
||
int noPercent; /* Special case for speed: indicates there's
|
||
* no field specifier, just a string to copy. */
|
||
int argIndex; /* 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 argv 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 (argc < 2) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
|
||
" formatString ?arg arg ...?\"", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
argIndex = 2;
|
||
for (format = argv[1]; *format != 0; ) {
|
||
register char *newPtr = newFormat;
|
||
|
||
width = precision = noPercent = useShort = 0;
|
||
whichValue = PTR_VALUE;
|
||
|
||
/*
|
||
* Get rid of any characters before the next field specifier.
|
||
*/
|
||
|
||
if (*format != '%') {
|
||
register char *p;
|
||
|
||
ptrValue = p = format;
|
||
while ((*format != '%') && (*format != 0)) {
|
||
*p = *format;
|
||
p++;
|
||
format++;
|
||
}
|
||
size = p - 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;
|
||
}
|
||
argIndex = tmp+1;
|
||
if ((argIndex < 2) || (argIndex >= argc)) {
|
||
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 (argIndex >= argc) {
|
||
goto badIndex;
|
||
}
|
||
if (Tcl_GetInt(interp, argv[argIndex], &width) != TCL_OK) {
|
||
goto fmtError;
|
||
}
|
||
argIndex++;
|
||
format++;
|
||
}
|
||
if (width > 1000) {
|
||
/*
|
||
* Don't allow arbitrarily large widths: could cause core
|
||
* dump when we try to allocate a zillion bytes of memory
|
||
* below.
|
||
*/
|
||
|
||
width = 1000;
|
||
} else if (width < 0) {
|
||
width = 0;
|
||
}
|
||
if (width != 0) {
|
||
sprintf(newPtr, "%d", 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 (argIndex >= argc) {
|
||
goto badIndex;
|
||
}
|
||
if (Tcl_GetInt(interp, argv[argIndex], &precision) != TCL_OK) {
|
||
goto fmtError;
|
||
}
|
||
argIndex++;
|
||
format++;
|
||
}
|
||
if (precision != 0) {
|
||
sprintf(newPtr, "%d", 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 (argIndex >= argc) {
|
||
goto badIndex;
|
||
}
|
||
switch (*format) {
|
||
case 'i':
|
||
newPtr[-1] = 'd';
|
||
case 'd':
|
||
case 'o':
|
||
case 'u':
|
||
case 'x':
|
||
case 'X':
|
||
if (Tcl_GetInt(interp, argv[argIndex], (int *) &intValue)
|
||
!= TCL_OK) {
|
||
goto fmtError;
|
||
}
|
||
whichValue = INT_VALUE;
|
||
size = 40 + precision;
|
||
break;
|
||
case 's':
|
||
ptrValue = argv[argIndex];
|
||
size = strlen(argv[argIndex]);
|
||
break;
|
||
case 'c':
|
||
if (Tcl_GetInt(interp, argv[argIndex], (int *) &intValue)
|
||
!= TCL_OK) {
|
||
goto fmtError;
|
||
}
|
||
whichValue = INT_VALUE;
|
||
size = 1;
|
||
break;
|
||
case 'e':
|
||
case 'E':
|
||
case 'f':
|
||
case 'g':
|
||
case 'G':
|
||
if (Tcl_GetDouble(interp, argv[argIndex], &doubleValue)
|
||
!= TCL_OK) {
|
||
goto fmtError;
|
||
}
|
||
whichValue = DOUBLE_VALUE;
|
||
size = 320;
|
||
if (precision > 10) {
|
||
size += precision;
|
||
}
|
||
break;
|
||
case 0:
|
||
interp->result =
|
||
"format string ended in middle of field specifier";
|
||
goto fmtError;
|
||
default:
|
||
sprintf(interp->result, "bad field specifier \"%c\"", *format);
|
||
goto fmtError;
|
||
}
|
||
argIndex++;
|
||
format++;
|
||
|
||
/*
|
||
* Make sure that there's enough space to hold the formatted
|
||
* result, then format it.
|
||
*/
|
||
|
||
doField:
|
||
if (width > size) {
|
||
size = width;
|
||
}
|
||
if ((dstSize + size) > dstSpace) {
|
||
char *newDst;
|
||
int newSpace;
|
||
|
||
newSpace = 2*(dstSize + size);
|
||
newDst = (char *) ckalloc((unsigned) newSpace+1);
|
||
if (dstSize != 0) {
|
||
memcpy((VOID *) newDst, (VOID *) dst, (size_t) dstSize);
|
||
}
|
||
if (dstSpace != TCL_RESULT_SIZE) {
|
||
ckfree(dst);
|
||
}
|
||
dst = newDst;
|
||
dstSpace = newSpace;
|
||
}
|
||
if (noPercent) {
|
||
memcpy((VOID *) (dst+dstSize), (VOID *) ptrValue, (size_t) size);
|
||
dstSize += size;
|
||
dst[dstSize] = 0;
|
||
} else {
|
||
if (whichValue == DOUBLE_VALUE) {
|
||
sprintf(dst+dstSize, newFormat, doubleValue);
|
||
} else if (whichValue == INT_VALUE) {
|
||
if (useShort) {
|
||
sprintf(dst+dstSize, newFormat, (short) intValue);
|
||
} else {
|
||
sprintf(dst+dstSize, newFormat, intValue);
|
||
}
|
||
} else {
|
||
sprintf(dst+dstSize, newFormat, ptrValue);
|
||
}
|
||
dstSize += strlen(dst+dstSize);
|
||
}
|
||
}
|
||
|
||
interp->result = dst;
|
||
if (dstSpace != TCL_RESULT_SIZE) {
|
||
interp->freeProc = TCL_DYNAMIC;
|
||
} else {
|
||
interp->freeProc = 0;
|
||
}
|
||
return TCL_OK;
|
||
|
||
mixedXPG:
|
||
interp->result = "cannot mix \"%\" and \"%n$\" conversion specifiers";
|
||
goto fmtError;
|
||
|
||
badIndex:
|
||
if (gotXpg) {
|
||
interp->result = "\"%n$\" argument index out of range";
|
||
} else {
|
||
interp->result = "not enough arguments for all format specifiers";
|
||
}
|
||
|
||
fmtError:
|
||
if (dstSpace != TCL_RESULT_SIZE) {
|
||
ckfree(dst);
|
||
}
|
||
return TCL_ERROR;
|
||
}
|