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Eliminate as many warnings as possible while building with -Wall

    1: /*
    2:  *   $Id: cmd_write.c,v 1.6 2025/04/09 19:52:02 snw Exp $
    3:  *    Implementation of the WRITE command
    4:  *
    5:  *  
    6:  *   Author: Serena Willis <snw@coherent-logic.com>
    7:  *    Copyright (C) 1998 MUG Deutschland
    8:  *    Copyright (C) 2023 Coherent Logic Development LLC
    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:  *
   26:  *   $Log: cmd_write.c,v $
   27:  *   Revision 1.6  2025/04/09 19:52:02  snw
   28:  *   Eliminate as many warnings as possible while building with -Wall
   29:  *
   30:  *   Revision 1.5  2025/03/24 04:05:36  snw
   31:  *   Replace crlf with frm_crlf to avoid symbol conflict with readline on OS/2
   32:  *
   33:  *   Revision 1.4  2025/03/22 18:43:54  snw
   34:  *   Make STRLEN 255 chars and add BIGSTR macro for larger buffers
   35:  *
   36:  *   Revision 1.3  2025/03/09 19:14:24  snw
   37:  *   First phase of REUSE compliance and header reformat
   38:  *
   39:  *
   40:  * SPDX-FileCopyrightText:  (C) 2025 Coherent Logic Development LLC
   41:  * SPDX-License-Identifier: AGPL-3.0-or-later
   42:  **/
   43: 
   44: #include <string.h>
   45: #include <stdlib.h>
   46: #include "mpsdef.h"
   47: #include "mcommand.h"
   48: #if !defined(MSDOS)
   49: # include "io_socket.h"
   50: #endif
   51: 
   52: MRESULT cmd_write(MACTION *ra, int *i)
   53: {
   54:     char vn[255];
   55:     char *wr_terminator = (char *) malloc (STRLEN * sizeof (char));
   56:     char *sw_buf = (char *) malloc (BIGSTR * sizeof (char));
   57:     
   58:     NULLPTRCHK(wr_terminator,"cmd_write");
   59:     NULLPTRCHK(sw_buf,"cmd_write");
   60: 
   61:     if (io > FIRSTSCK) msck_get_terminator (io, wr_terminator);
   62:     
   63:     if (io != HOME && devopen[io] == 'r' && io < FIRSTSCK) {
   64:         free (wr_terminator);
   65:         free (sw_buf);
   66:         return NOWRITE;
   67:     }
   68:     
   69:     if ((*i = (*codptr)) == SP || *i == EOL) {
   70:         free (wr_terminator);
   71:         free (sw_buf);
   72:         return ARGLIST;
   73:     }
   74:     
   75: writeproc:
   76:     
   77:     switch (*i)
   78:     {
   79:         
   80:         case '!':
   81:             
   82:             if (io < FIRSTSCK) {
   83:                 
   84:                 if (frm_crlf[io]) {
   85:                     write_m ("\012\201");
   86:                 }
   87:                 else {
   88:                     write_m ("\015\012\201");
   89:                 }
   90:                 
   91:             }
   92:             else {                
   93:                 /* WRITE ! for sockets */
   94:                 strcat (sw_buf, wr_terminator);                
   95:             }
   96:             
   97:             break;
   98:             
   99:         case '#':
  100:             
  101:             if (io < FIRSTSCK) {
  102:                 write_m ("\015\014\201");
  103:             }
  104:             else {
  105:                 return SYNTERR;
  106:             }
  107:             
  108:             break;
  109:             
  110:         case '?':
  111:             
  112:             codptr++;
  113:             
  114:             expr (STRING);
  115:             
  116:             if (merr ()) return merr ();
  117:             
  118:             if (io < FIRSTSCK) {
  119:                 write_t ((short) intexpr (argptr));
  120:             }
  121:             else {
  122:                 return SYNTERR;
  123:             }
  124:             
  125:             break;
  126:             
  127:         case '/':
  128:             codptr++;
  129:             
  130:             expr (NAME);
  131:             if (merr ()) return merr ();
  132:             
  133:             if (io < FIRSTSCK) {
  134:                 write_f (varnam);
  135:             }
  136:             else {
  137:                 return SYNTERR;
  138:             }
  139:             
  140:             codptr++;
  141:             
  142:             break;
  143:             
  144:         case '*':
  145:             codptr++;
  146:             
  147:             expr (STRING);            
  148:             if (merr ()) return merr ();
  149:             
  150:             argptr[0] = (char) UNSIGN (intexpr (argptr));
  151:             argptr[1] = EOL;
  152:             
  153:             /* special treatment for EOL as long as we don't have 8 bit */
  154:             if (argptr[0] == EOL) {
  155:                 
  156:                 mcmnd = '*';
  157:                 
  158:                 if (io < FIRSTSCK) {
  159:                     m_output (argptr);
  160:                 }
  161:                 else {
  162:                     /* EOL handling for socket devices */
  163:                 }
  164:                 mcmnd = WRITE;
  165:                 
  166:             }
  167:             else {
  168:                 
  169:                 if (io < FIRSTSCK) {
  170:                     write_m (argptr);
  171:                 }
  172:                 else {
  173:                     /* non-EOL char-code handling for sockets */
  174:                 }
  175:                 
  176:             }
  177:             
  178:             break;
  179:             
  180:         default:
  181:             expr (STRING);            
  182:             if (merr ()) return merr ();
  183:             
  184:             if (io < FIRSTSCK) {
  185:                 write_m (argptr);
  186:             }
  187:             else {
  188:                 /* regular output for socket devices */
  189:                 stcpy (vn, argptr);
  190:                 stcnv_m2c (vn);
  191:                 strcat (sw_buf, vn);
  192:             }
  193:     }
  194:     
  195:     if ((*i == '!') || (*i == '#')) {
  196:         if ((*i = *++codptr) == '!' || *i == '#' || *i == '?') goto writeproc;
  197:     }
  198:     
  199:     if (io >= FIRSTSCK) {
  200:         msck_write (io, sw_buf, strlen (sw_buf));
  201:     }
  202:     
  203:     free (sw_buf);
  204:     free (wr_terminator);
  205:     
  206:     *ra = RA_CONTINUE;
  207:     return OK;    
  208: }