953 lines
23 KiB
C
953 lines
23 KiB
C
/*
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* tclCmdAH.c --
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*
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* This file contains the top-level command routines for most of
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* the Tcl built-in commands whose names begin with the letters
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* A to H.
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*
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* Copyright (c) 1987-1993 The Regents of the University of California.
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* All rights reserved.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
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* OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
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* CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*/
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#ifndef lint
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static char rcsid[] = "$Header: /user6/ouster/tcl/RCS/tclCmdAH.c,v 1.93 93/10/28 16:19:20 ouster Exp $ SPRITE (Berkeley)";
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#endif
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#include "tclInt.h"
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/*
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*----------------------------------------------------------------------
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*
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* Tcl_BreakCmd --
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*
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* This procedure is invoked to process the "break" Tcl command.
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* See the user documentation for details on what it does.
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*
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* Results:
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* A standard Tcl result.
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*
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* Side effects:
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* See the user documentation.
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*
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*----------------------------------------------------------------------
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*/
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/* ARGSUSED */
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int
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Tcl_BreakCmd(dummy, interp, argc, argv)
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ClientData dummy; /* Not used. */
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Tcl_Interp *interp; /* Current interpreter. */
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int argc; /* Number of arguments. */
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char **argv; /* Argument strings. */
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{
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if (argc != 1) {
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Tcl_AppendResult(interp, "wrong # args: should be \"",
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argv[0], "\"", (char *) NULL);
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return TCL_ERROR;
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}
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return TCL_BREAK;
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}
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/*
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*----------------------------------------------------------------------
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*
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* Tcl_CaseCmd --
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*
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* This procedure is invoked to process the "case" Tcl command.
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* See the user documentation for details on what it does.
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*
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* Results:
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* A standard Tcl result.
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*
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* Side effects:
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* See the user documentation.
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*
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*----------------------------------------------------------------------
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*/
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/* ARGSUSED */
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int
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Tcl_CaseCmd(dummy, interp, argc, argv)
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ClientData dummy; /* Not used. */
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Tcl_Interp *interp; /* Current interpreter. */
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int argc; /* Number of arguments. */
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char **argv; /* Argument strings. */
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{
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int i, result;
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int body;
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char *string;
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int caseArgc, splitArgs;
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char **caseArgv;
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if (argc < 3) {
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Tcl_AppendResult(interp, "wrong # args: should be \"",
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argv[0], " string ?in? patList body ... ?default body?\"",
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(char *) NULL);
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return TCL_ERROR;
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}
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string = argv[1];
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body = -1;
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if (strcmp(argv[2], "in") == 0) {
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i = 3;
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} else {
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i = 2;
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}
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caseArgc = argc - i;
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caseArgv = argv + i;
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/*
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* If all of the pattern/command pairs are lumped into a single
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* argument, split them out again.
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*/
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splitArgs = 0;
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if (caseArgc == 1) {
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result = Tcl_SplitList(interp, caseArgv[0], &caseArgc, &caseArgv);
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if (result != TCL_OK) {
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return result;
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}
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splitArgs = 1;
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}
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for (i = 0; i < caseArgc; i += 2) {
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int patArgc, j;
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char **patArgv;
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register char *p;
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if (i == (caseArgc-1)) {
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interp->result = "extra case pattern with no body";
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result = TCL_ERROR;
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goto cleanup;
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}
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/*
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* Check for special case of single pattern (no list) with
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* no backslash sequences.
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*/
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for (p = caseArgv[i]; *p != 0; p++) {
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if (isspace(UCHAR(*p)) || (*p == '\\')) {
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break;
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}
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}
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if (*p == 0) {
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if ((*caseArgv[i] == 'd')
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&& (strcmp(caseArgv[i], "default") == 0)) {
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body = i+1;
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}
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if (Tcl_StringMatch(string, caseArgv[i])) {
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body = i+1;
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goto match;
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}
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continue;
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}
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/*
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* Break up pattern lists, then check each of the patterns
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* in the list.
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*/
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result = Tcl_SplitList(interp, caseArgv[i], &patArgc, &patArgv);
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if (result != TCL_OK) {
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goto cleanup;
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}
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for (j = 0; j < patArgc; j++) {
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if (Tcl_StringMatch(string, patArgv[j])) {
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body = i+1;
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break;
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}
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}
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ckfree((char *) patArgv);
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if (j < patArgc) {
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break;
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}
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}
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match:
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if (body != -1) {
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result = Tcl_Eval(interp, caseArgv[body]);
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if (result == TCL_ERROR) {
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char msg[100];
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sprintf(msg, "\n (\"%.50s\" arm line %d)", caseArgv[body-1],
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interp->errorLine);
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Tcl_AddErrorInfo(interp, msg);
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}
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goto cleanup;
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}
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/*
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* Nothing matched: return nothing.
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*/
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result = TCL_OK;
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cleanup:
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if (splitArgs) {
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ckfree((char *) caseArgv);
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}
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return result;
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}
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/*
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*----------------------------------------------------------------------
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*
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* Tcl_CatchCmd --
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*
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* This procedure is invoked to process the "catch" Tcl command.
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* See the user documentation for details on what it does.
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*
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* Results:
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* A standard Tcl result.
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*
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* Side effects:
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* See the user documentation.
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*
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*----------------------------------------------------------------------
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*/
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/* ARGSUSED */
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int
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Tcl_CatchCmd(dummy, interp, argc, argv)
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ClientData dummy; /* Not used. */
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Tcl_Interp *interp; /* Current interpreter. */
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int argc; /* Number of arguments. */
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char **argv; /* Argument strings. */
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{
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int result;
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if ((argc != 2) && (argc != 3)) {
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Tcl_AppendResult(interp, "wrong # args: should be \"",
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argv[0], " command ?varName?\"", (char *) NULL);
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return TCL_ERROR;
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}
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result = Tcl_Eval(interp, argv[1]);
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if (argc == 3) {
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if (Tcl_SetVar(interp, argv[2], interp->result, 0) == NULL) {
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Tcl_SetResult(interp, "couldn't save command result in variable",
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TCL_STATIC);
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return TCL_ERROR;
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}
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}
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Tcl_ResetResult(interp);
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sprintf(interp->result, "%d", result);
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return TCL_OK;
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}
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/*
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*----------------------------------------------------------------------
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*
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* Tcl_ConcatCmd --
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*
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* This procedure is invoked to process the "concat" Tcl command.
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* See the user documentation for details on what it does.
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*
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* Results:
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* A standard Tcl result.
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*
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* Side effects:
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* See the user documentation.
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*
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*----------------------------------------------------------------------
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*/
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/* ARGSUSED */
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int
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Tcl_ConcatCmd(dummy, interp, argc, argv)
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ClientData dummy; /* Not used. */
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Tcl_Interp *interp; /* Current interpreter. */
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int argc; /* Number of arguments. */
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char **argv; /* Argument strings. */
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{
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if (argc >= 2) {
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interp->result = Tcl_Concat(argc-1, argv+1);
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interp->freeProc = (Tcl_FreeProc *) free;
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}
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return TCL_OK;
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}
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/*
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*----------------------------------------------------------------------
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*
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* Tcl_ContinueCmd --
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*
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* This procedure is invoked to process the "continue" Tcl command.
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* See the user documentation for details on what it does.
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*
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* Results:
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* A standard Tcl result.
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*
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* Side effects:
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* See the user documentation.
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*
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*----------------------------------------------------------------------
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*/
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/* ARGSUSED */
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int
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Tcl_ContinueCmd(dummy, interp, argc, argv)
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ClientData dummy; /* Not used. */
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Tcl_Interp *interp; /* Current interpreter. */
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int argc; /* Number of arguments. */
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char **argv; /* Argument strings. */
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{
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if (argc != 1) {
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Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
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"\"", (char *) NULL);
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return TCL_ERROR;
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}
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return TCL_CONTINUE;
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}
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/*
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*----------------------------------------------------------------------
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*
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* Tcl_ErrorCmd --
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*
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* This procedure is invoked to process the "error" Tcl command.
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* See the user documentation for details on what it does.
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*
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* Results:
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* A standard Tcl result.
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*
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* Side effects:
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* See the user documentation.
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*
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*----------------------------------------------------------------------
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*/
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/* ARGSUSED */
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int
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Tcl_ErrorCmd(dummy, interp, argc, argv)
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ClientData dummy; /* Not used. */
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Tcl_Interp *interp; /* Current interpreter. */
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int argc; /* Number of arguments. */
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char **argv; /* Argument strings. */
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{
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Interp *iPtr = (Interp *) interp;
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if ((argc < 2) || (argc > 4)) {
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Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
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" message ?errorInfo? ?errorCode?\"", (char *) NULL);
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return TCL_ERROR;
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}
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if ((argc >= 3) && (argv[2][0] != 0)) {
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Tcl_AddErrorInfo(interp, argv[2]);
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iPtr->flags |= ERR_ALREADY_LOGGED;
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}
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if (argc == 4) {
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Tcl_SetVar2(interp, "errorCode", (char *) NULL, argv[3],
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TCL_GLOBAL_ONLY);
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iPtr->flags |= ERROR_CODE_SET;
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}
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Tcl_SetResult(interp, argv[1], TCL_VOLATILE);
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return TCL_ERROR;
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}
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/*
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*----------------------------------------------------------------------
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*
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* Tcl_EvalCmd --
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*
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* This procedure is invoked to process the "eval" Tcl command.
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* See the user documentation for details on what it does.
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*
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* Results:
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* A standard Tcl result.
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*
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* Side effects:
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* See the user documentation.
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*
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*----------------------------------------------------------------------
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*/
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/* ARGSUSED */
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int
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Tcl_EvalCmd(dummy, interp, argc, argv)
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ClientData dummy; /* Not used. */
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Tcl_Interp *interp; /* Current interpreter. */
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int argc; /* Number of arguments. */
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char **argv; /* Argument strings. */
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{
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int result;
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char *cmd;
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if (argc < 2) {
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Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
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" arg ?arg ...?\"", (char *) NULL);
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return TCL_ERROR;
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}
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if (argc == 2) {
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result = Tcl_Eval(interp, argv[1]);
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} else {
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/*
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* More than one argument: concatenate them together with spaces
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* between, then evaluate the result.
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*/
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cmd = Tcl_Concat(argc-1, argv+1);
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result = Tcl_Eval(interp, cmd);
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ckfree(cmd);
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}
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if (result == TCL_ERROR) {
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char msg[60];
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sprintf(msg, "\n (\"eval\" body line %d)", interp->errorLine);
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Tcl_AddErrorInfo(interp, msg);
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}
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return result;
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}
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/*
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*----------------------------------------------------------------------
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*
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* Tcl_ExprCmd --
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*
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* This procedure is invoked to process the "expr" Tcl command.
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* See the user documentation for details on what it does.
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*
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* Results:
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* A standard Tcl result.
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*
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* Side effects:
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* See the user documentation.
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*
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*----------------------------------------------------------------------
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*/
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/* ARGSUSED */
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int
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Tcl_ExprCmd(dummy, interp, argc, argv)
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ClientData dummy; /* Not used. */
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Tcl_Interp *interp; /* Current interpreter. */
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int argc; /* Number of arguments. */
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char **argv; /* Argument strings. */
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{
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Tcl_DString buffer;
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int i, result;
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if (argc < 2) {
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Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
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" arg ?arg ...?\"", (char *) NULL);
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return TCL_ERROR;
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}
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if (argc == 2) {
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return Tcl_ExprString(interp, argv[1]);
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}
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Tcl_DStringInit(&buffer);
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Tcl_DStringAppend(&buffer, argv[1], -1);
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for (i = 2; i < argc; i++) {
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Tcl_DStringAppend(&buffer, " ", 1);
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Tcl_DStringAppend(&buffer, argv[i], -1);
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}
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result = Tcl_ExprString(interp, buffer.string);
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Tcl_DStringFree(&buffer);
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return result;
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}
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/*
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*----------------------------------------------------------------------
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*
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* Tcl_ForCmd --
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*
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* This procedure is invoked to process the "for" Tcl command.
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* See the user documentation for details on what it does.
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*
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* Results:
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* A standard Tcl result.
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*
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* Side effects:
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* See the user documentation.
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*
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*----------------------------------------------------------------------
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*/
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/* ARGSUSED */
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int
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Tcl_ForCmd(dummy, interp, argc, argv)
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ClientData dummy; /* Not used. */
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Tcl_Interp *interp; /* Current interpreter. */
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int argc; /* Number of arguments. */
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char **argv; /* Argument strings. */
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{
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int result, value;
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if (argc != 5) {
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Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
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" start test next command\"", (char *) NULL);
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return TCL_ERROR;
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}
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result = Tcl_Eval(interp, argv[1]);
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if (result != TCL_OK) {
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if (result == TCL_ERROR) {
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Tcl_AddErrorInfo(interp, "\n (\"for\" initial command)");
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}
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return result;
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}
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while (1) {
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result = Tcl_ExprBoolean(interp, argv[2], &value);
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if (result != TCL_OK) {
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return result;
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}
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if (!value) {
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break;
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}
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result = Tcl_Eval(interp, argv[4]);
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if ((result != TCL_OK) && (result != TCL_CONTINUE)) {
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if (result == TCL_ERROR) {
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char msg[60];
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sprintf(msg, "\n (\"for\" body line %d)", interp->errorLine);
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Tcl_AddErrorInfo(interp, msg);
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}
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break;
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}
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result = Tcl_Eval(interp, argv[3]);
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if (result == TCL_BREAK) {
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break;
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} else if (result != TCL_OK) {
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if (result == TCL_ERROR) {
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Tcl_AddErrorInfo(interp, "\n (\"for\" loop-end command)");
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}
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return result;
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}
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}
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if (result == TCL_BREAK) {
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result = TCL_OK;
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}
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if (result == TCL_OK) {
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Tcl_ResetResult(interp);
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}
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return result;
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}
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|
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/*
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*----------------------------------------------------------------------
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*
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* Tcl_ForeachCmd --
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*
|
||
* This procedure is invoked to process the "foreach" Tcl command.
|
||
* See the user documentation for details on what it does.
|
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*
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||
* Results:
|
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* A standard Tcl result.
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*
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* Side effects:
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||
* See the user documentation.
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*
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*----------------------------------------------------------------------
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*/
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/* ARGSUSED */
|
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int
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Tcl_ForeachCmd(dummy, interp, argc, argv)
|
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ClientData dummy; /* Not used. */
|
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Tcl_Interp *interp; /* Current interpreter. */
|
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int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
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int listArgc, i, result;
|
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char **listArgv;
|
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|
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if (argc != 4) {
|
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Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
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" varName list command\"", (char *) NULL);
|
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return TCL_ERROR;
|
||
}
|
||
|
||
/*
|
||
* Break the list up into elements, and execute the command once
|
||
* for each value of the element.
|
||
*/
|
||
|
||
result = Tcl_SplitList(interp, argv[2], &listArgc, &listArgv);
|
||
if (result != TCL_OK) {
|
||
return result;
|
||
}
|
||
for (i = 0; i < listArgc; i++) {
|
||
if (Tcl_SetVar(interp, argv[1], listArgv[i], 0) == NULL) {
|
||
Tcl_SetResult(interp, "couldn't set loop variable", TCL_STATIC);
|
||
result = TCL_ERROR;
|
||
break;
|
||
}
|
||
|
||
result = Tcl_Eval(interp, argv[3]);
|
||
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;
|
||
}
|
||
}
|
||
}
|
||
ckfree((char *) listArgv);
|
||
if (result == TCL_OK) {
|
||
Tcl_ResetResult(interp);
|
||
}
|
||
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.) and width from above. */
|
||
char *oneWordValue = NULL; /* Used to hold value to pass to sprintf, if
|
||
* it's a one-word value. */
|
||
double twoWordValue; /* Used to hold value to pass to sprintf if
|
||
* it's a two-word value. */
|
||
int useTwoWords; /* 0 means use oneWordValue, 1 means use
|
||
* twoWordValue. */
|
||
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 = useTwoWords = noPercent = useShort = 0;
|
||
|
||
/*
|
||
* Get rid of any characters before the next field specifier.
|
||
*/
|
||
|
||
if (*format != '%') {
|
||
register char *p;
|
||
|
||
oneWordValue = p = format;
|
||
while ((*format != '%') && (*format != 0)) {
|
||
*p = *format;
|
||
p++;
|
||
format++;
|
||
}
|
||
size = p - oneWordValue;
|
||
noPercent = 1;
|
||
goto doField;
|
||
}
|
||
|
||
if (format[1] == '%') {
|
||
oneWordValue = 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 != 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 *) &oneWordValue)
|
||
!= TCL_OK) {
|
||
goto fmtError;
|
||
}
|
||
size = 40;
|
||
break;
|
||
case 's':
|
||
oneWordValue = argv[argIndex];
|
||
size = strlen(argv[argIndex]);
|
||
break;
|
||
case 'c':
|
||
if (Tcl_GetInt(interp, argv[argIndex], (int *) &oneWordValue)
|
||
!= TCL_OK) {
|
||
goto fmtError;
|
||
}
|
||
size = 1;
|
||
break;
|
||
case 'e':
|
||
case 'E':
|
||
case 'f':
|
||
case 'g':
|
||
case 'G':
|
||
if (Tcl_GetDouble(interp, argv[argIndex], &twoWordValue)
|
||
!= TCL_OK) {
|
||
goto fmtError;
|
||
}
|
||
useTwoWords = 1;
|
||
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, dstSize);
|
||
}
|
||
if (dstSpace != TCL_RESULT_SIZE) {
|
||
ckfree(dst);
|
||
}
|
||
dst = newDst;
|
||
dstSpace = newSpace;
|
||
}
|
||
if (noPercent) {
|
||
memcpy((VOID *) (dst+dstSize), (VOID *) oneWordValue, size);
|
||
dstSize += size;
|
||
dst[dstSize] = 0;
|
||
} else {
|
||
if (useTwoWords) {
|
||
sprintf(dst+dstSize, newFormat, twoWordValue);
|
||
} else if (useShort) {
|
||
/*
|
||
* The double cast below is needed for a few machines
|
||
* (e.g. Pyramids as of 1/93) that don't like casts
|
||
* directly from pointers to shorts.
|
||
*/
|
||
|
||
sprintf(dst+dstSize, newFormat, (short) (int) oneWordValue);
|
||
} else {
|
||
sprintf(dst+dstSize, newFormat, (char *) oneWordValue);
|
||
}
|
||
dstSize += strlen(dst+dstSize);
|
||
}
|
||
}
|
||
|
||
interp->result = dst;
|
||
if (dstSpace != TCL_RESULT_SIZE) {
|
||
interp->freeProc = (Tcl_FreeProc *) free;
|
||
} 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;
|
||
}
|