Release 4.1

[unix-history] / usr / src / usr.bin / tn3270 / ctlr / options.c

/*
* Copyright (c) 1988 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley.  The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/

#ifndef lint
static char sccsid[] = "@(#)options.c   4.1 (Berkeley) %G%";
#endif /* not lint */

/*
* this file contains the definitions, initialization, and processing of
*      commands to handle the various local options (APL ON, etc.)
*/

#include "options.h"

#include "../general/globals.h"
#include "declare.h"

void
OptInit()
{
   register int i;

   OptAPLmode = 0;
   OptNullProcessing = 1;              /* improved null processing */
   OptZonesMode = 0;           /* zones mode off */
   OptEnterNL = 0;             /* regular enter/new line keys */
   OptColFieldTab = 0;         /* regular column/field tab keys */
   OptPacing = 1;                      /* do pacing */
   OptAlphaInNumeric = 0;              /* allow alpha in numeric fields */
   for (i = 0; i < sizeof OptColTabs; i++) {
       OptColTabs[i] = ((i%8) == 0);   /* every 8 columns */
   }
   OptHome = 0;
   OptLeftMargin = 0;
   OptWordWrap = 0;
}

OptOrder(pointer, count, control)
unsigned char *pointer;
int count;
int control;
{
   int i, j, character, origCount;

   origCount = count;

   if (count == 0) {
       return(0);
   }
   character = *pointer&0xff;
   pointer++;
   count--;
   switch (character) {
   case 0xa0:
       OptAPLmode = 1;
       break;
   case 0x61:
       OptAPLmode = 0;
       break;
   case 0x95:
       OptNullProcessing = 0;
       break;
   case 0xd5:
       OptNullProcessing = 1;
       break;
   case 0xa9:
       OptZonesMode = 1;
       break;
   case 0xe9:
       OptZonesMode = 0;
       break;
   case 0x85:
       OptEnterNL = 1;
       break;
   case 0xc5:
       OptEnterNL = 0;
       break;
   case 0x83:
       OptColFieldTab = 1;
       break;
   case 0xc3:
       OptColFieldTab = 0;
       break;
   case 0x97:
       OptPacing = 0;
       break;
   case 0xd7:
       OptPacing = 1;
       break;
   case 0xa5:
       OptAlphaInNumeric = 1;
       break;
   case 0xe5:
       OptAlphaInNumeric = 0;
       break;
   case 0xe3:
       if (!control && count < 30) {
           return(0);          /* want more! */
       }
       for (i = 0; i < sizeof OptColTabs; i++) {
           OptColTabs[i] = 0;
       }
       if (!count) {
           break;
       }
       j = (*pointer&0xff)-0x40;
       count--;
       pointer++;
       if (j < 0 || j >= 24) {
           break;
       }
       OptHome = j;
       if (!count) {
           break;
       }
       j = (*pointer&0xff)-0x40;
       count--;
       pointer++;
       if (j < 0 || j >= 80) {
           break;
       }
       OptLeftMargin = j;
       if (!count) {
           break;
       }
       i = count;
       if (i > 28) {
           i = 28;
       }
       while (i) {
           j = (*pointer&0xff)-0x40;
           if (j < 0 || j >= sizeof OptColTabs) {
               break;
           }
           OptColTabs[j] = 1;
           i --;
           pointer++;
           count--;
       }
       break;
   case 0xa6:
       OptWordWrap = 1;
       break;
   case 0xe6:
       OptWordWrap = 0;
       break;
   default:
       break;
   }
   return(origCount - count);
}