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Annotation of freem/src/cmd_if.c, revision 1.1.1.1

1.1       snw         1: /*
                      2:  *                            *
                      3:  *                           * *
                      4:  *                          *   *
                      5:  *                     ***************
                      6:  *                      * *       * *
                      7:  *                       *  MUMPS  *
                      8:  *                      * *       * *
                      9:  *                     ***************
                     10:  *                          *   *
                     11:  *                           * *
                     12:  *                            *
                     13:  *
                     14:  *   cmd_if.c
                     15:  *    Implementation of the IF command
                     16:  *
                     17:  *  
                     18:  *   Author: Serena Willis <jpw@coherent-logic.com>
                     19:  *    Copyright (C) 1998 MUG Deutschland
                     20:  *    Copyright (C) 2023 Coherent Logic Development LLC
                     21:  *
                     22:  *
                     23:  *   This file is part of FreeM.
                     24:  *
                     25:  *   FreeM is free software: you can redistribute it and/or modify
                     26:  *   it under the terms of the GNU Affero Public License as published by
                     27:  *   the Free Software Foundation, either version 3 of the License, or
                     28:  *   (at your option) any later version.
                     29:  *
                     30:  *   FreeM is distributed in the hope that it will be useful,
                     31:  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
                     32:  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     33:  *   GNU Affero Public License for more details.
                     34:  *
                     35:  *   You should have received a copy of the GNU Affero Public License
                     36:  *   along with FreeM.  If not, see <https://www.gnu.org/licenses/>.
                     37:  *
                     38:  **/
                     39: 
                     40: #include <string.h>
                     41: #include <stdlib.h>
                     42: #include <ctype.h>
                     43: #include "mpsdef.h"
                     44: #include "mcommand.h"
                     45: 
                     46: MRESULT cmd_if(MACTION *ra)
                     47: {
                     48:     if (*codptr == SP || *codptr == EOL) {           /* no argument form of IF */
                     49:         if (test) {
                     50:             *ra = RA_NEXTCMND;
                     51:             return OK;
                     52:         }
                     53:         *ra = RA_SKIPLINE;
                     54:         return OK;
                     55:     }
                     56:     
                     57:     expr (STRING);
                     58:     
                     59:     if (*argptr == '1') {
                     60:         test = TRUE;
                     61:         *ra = RA_CONTINUE;
                     62:         return OK;
                     63:     }
                     64:     
                     65:     if (merr ()) return merr ();
                     66:     
                     67:     if (*argptr == '0' && argptr[1] == EOL) {
                     68:         test = FALSE;
                     69:         *ra = RA_SKIPLINE;
                     70:         return OK;
                     71:     }
                     72:     
                     73:     if ((test = tvexpr (argptr)) == FALSE) {
                     74:         *ra = RA_SKIPLINE;
                     75:         return OK;
                     76:     }
                     77: 
                     78:     *ra = RA_CONTINUE;
                     79:     return OK;    
                     80: }