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

1.1       snw         1: /*
                      2:  *
1.3     ! snw         3:  *   $Log$
1.1       snw         4:  *    Implementation of the IF command
                      5:  *
                      6:  *  
1.2       snw         7:  *   Author: Serena Willis <snw@coherent-logic.com>
1.1       snw         8:  *    Copyright (C) 1998 MUG Deutschland
1.3     ! snw         9:  *    Copyright (C) 2023, 2025 Coherent Logic Development LLC
1.1       snw        10:  *
                     11:  *
                     12:  *   This file is part of FreeM.
                     13:  *
                     14:  *   FreeM is free software: you can redistribute it and/or modify
                     15:  *   it under the terms of the GNU Affero Public License as published by
                     16:  *   the Free Software Foundation, either version 3 of the License, or
                     17:  *   (at your option) any later version.
                     18:  *
                     19:  *   FreeM is distributed in the hope that it will be useful,
                     20:  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
                     21:  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     22:  *   GNU Affero Public License for more details.
                     23:  *
                     24:  *   You should have received a copy of the GNU Affero Public License
                     25:  *   along with FreeM.  If not, see <https://www.gnu.org/licenses/>.
                     26:  *
1.3     ! snw        27:  *   $Log$
        !            28:  *
        !            29:  * SPDX-FileCopyrightText:  (C) 2025 Coherent Logic Development LLC
        !            30:  * SPDX-License-Identifier: AGPL-3.0-or-later
1.1       snw        31:  **/
                     32: 
                     33: #include <string.h>
                     34: #include <stdlib.h>
                     35: #include <ctype.h>
                     36: #include "mpsdef.h"
                     37: #include "mcommand.h"
                     38: 
                     39: MRESULT cmd_if(MACTION *ra)
                     40: {
                     41:     if (*codptr == SP || *codptr == EOL) {           /* no argument form of IF */
                     42:         if (test) {
                     43:             *ra = RA_NEXTCMND;
                     44:             return OK;
                     45:         }
                     46:         *ra = RA_SKIPLINE;
                     47:         return OK;
                     48:     }
                     49:     
                     50:     expr (STRING);
                     51:     
                     52:     if (*argptr == '1') {
                     53:         test = TRUE;
                     54:         *ra = RA_CONTINUE;
                     55:         return OK;
                     56:     }
                     57:     
                     58:     if (merr ()) return merr ();
                     59:     
                     60:     if (*argptr == '0' && argptr[1] == EOL) {
                     61:         test = FALSE;
                     62:         *ra = RA_SKIPLINE;
                     63:         return OK;
                     64:     }
                     65:     
                     66:     if ((test = tvexpr (argptr)) == FALSE) {
                     67:         *ra = RA_SKIPLINE;
                     68:         return OK;
                     69:     }
                     70: 
                     71:     *ra = RA_CONTINUE;
                     72:     return OK;    
                     73: }