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Annotation of freem/src/cmd_kvalue.c, revision 1.3

1.1       snw         1: /*
1.3     ! snw         2:  *   $Id$
1.1       snw         3:  *    Implementation of the KVALUE command
                      4:  *
                      5:  *  
1.2       snw         6:  *   Author: Serena Willis <snw@coherent-logic.com>
1.1       snw         7:  *    Copyright (C) 1998 MUG Deutschland
1.3     ! snw         8:  *    Copyright (C) 2023, 2025 Coherent Logic Development LLC
1.1       snw         9:  *
                     10:  *
                     11:  *   This file is part of FreeM.
                     12:  *
                     13:  *   FreeM is free software: you can redistribute it and/or modify
                     14:  *   it under the terms of the GNU Affero Public License as published by
                     15:  *   the Free Software Foundation, either version 3 of the License, or
                     16:  *   (at your option) any later version.
                     17:  *
                     18:  *   FreeM is distributed in the hope that it will be useful,
                     19:  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
                     20:  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     21:  *   GNU Affero Public License for more details.
                     22:  *
                     23:  *   You should have received a copy of the GNU Affero Public License
                     24:  *   along with FreeM.  If not, see <https://www.gnu.org/licenses/>.
                     25:  *
1.3     ! snw        26:  *   $Log$
        !            27:  *
        !            28:  * SPDX-FileCopyrightText:  (C) 2025 Coherent Logic Development LLC
        !            29:  * SPDX-License-Identifier: AGPL-3.0-or-later
1.1       snw        30:  **/
                     31: 
                     32: #include <string.h>
                     33: #include <stdlib.h>
                     34: #include "mpsdef.h"
                     35: #include "mcommand.h"
                     36: #include "consttbl.h"
                     37: 
                     38: MRESULT cmd_kvalue(MACTION *ra)
                     39: {
                     40:     register char ch;
                     41:     char vn[255];
                     42:     
                     43:     if ((rtn_dialect () != D_FREEM) &&
                     44:         (rtn_dialect () != D_MDS)) {
                     45:         return NOSTAND;
                     46:     }
                     47:     
                     48:     /* argumentless: KVALUE nukleurrr winturr */
                     49:     if (((ch = *codptr) == SP) || ch == EOL) {
                     50:         write_m ("Argumentless KVALUE not yet implemented.\201");
                     51:         *ra = RA_NEXTCMND;
                     52:         return OK;
                     53:     }
                     54:     
                     55:     
                     56:     if (ch != '(') { /* inclusive KVALUE */
                     57:         
                     58:         for (;;) {
                     59: 
                     60:             expr (NAME);                            /* try to interpret an mname */
                     61:             if (merr ()) return merr ();
                     62:             
                     63:             stcpy (vn, varnam);
                     64:             
                     65:             if (vn[0] != '^') {
                     66:                 symtab (killone, vn, NULL);
                     67:             }
                     68:             else {
                     69:                 if (vn[1] == '$') {
                     70:                     ssvn (killone, vn, NULL);
                     71:                 }
                     72:                 else {
                     73:                     global (killone, vn, NULL);
                     74:                 }
                     75:             }
                     76:             
                     77:             if (merr ()) return merr ();
                     78:             
                     79:             if ((ch = *(codptr + 1)) == EOL) {
                     80:                 codptr++;
                     81:                 break;
                     82:             }
                     83:             else if (ch == ',') {
                     84:                 codptr += 2;
                     85:             }
                     86:             else {
                     87:                 return CMMND;
                     88:             }
                     89:         } 
                     90:         
                     91:     }
                     92:     else { /* exclusive KVALUE */
                     93:         
                     94:         write_m ("Exclusive KVALUE not yet implemented.\201");
                     95:         
                     96:         while ((ch = *(codptr++)) != SP && ch != EOL) ; /* skip to the end of the command */
                     97:         
                     98:     }
                     99: 
                    100:     *ra = RA_NEXTCMND;
                    101:     return OK;
                    102: }