| 1 | /* |
| 2 | * Copyright (c) 1988 Regents of the University of California. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms are permitted |
| 6 | * provided that the above copyright notice and this paragraph are |
| 7 | * duplicated in all such forms and that any documentation, |
| 8 | * advertising materials, and other materials related to such |
| 9 | * distribution and use acknowledge that the software was developed |
| 10 | * by the University of California, Berkeley. The name of the |
| 11 | * University may not be used to endorse or promote products derived |
| 12 | * from this software without specific prior written permission. |
| 13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
| 14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
| 15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| 16 | */ |
| 17 | |
| 18 | #ifndef lint |
| 19 | static char sccsid[] = "@(#)options.c 4.1 (Berkeley) %G%"; |
| 20 | #endif /* not lint */ |
| 21 | |
| 22 | /* |
| 23 | * this file contains the definitions, initialization, and processing of |
| 24 | * commands to handle the various local options (APL ON, etc.) |
| 25 | */ |
| 26 | |
| 27 | #include "options.h" |
| 28 | |
| 29 | #include "../general/globals.h" |
| 30 | #include "declare.h" |
| 31 | |
| 32 | void |
| 33 | OptInit() |
| 34 | { |
| 35 | register int i; |
| 36 | |
| 37 | OptAPLmode = 0; |
| 38 | OptNullProcessing = 1; /* improved null processing */ |
| 39 | OptZonesMode = 0; /* zones mode off */ |
| 40 | OptEnterNL = 0; /* regular enter/new line keys */ |
| 41 | OptColFieldTab = 0; /* regular column/field tab keys */ |
| 42 | OptPacing = 1; /* do pacing */ |
| 43 | OptAlphaInNumeric = 0; /* allow alpha in numeric fields */ |
| 44 | for (i = 0; i < sizeof OptColTabs; i++) { |
| 45 | OptColTabs[i] = ((i%8) == 0); /* every 8 columns */ |
| 46 | } |
| 47 | OptHome = 0; |
| 48 | OptLeftMargin = 0; |
| 49 | OptWordWrap = 0; |
| 50 | } |
| 51 | |
| 52 | OptOrder(pointer, count, control) |
| 53 | unsigned char *pointer; |
| 54 | int count; |
| 55 | int control; |
| 56 | { |
| 57 | int i, j, character, origCount; |
| 58 | |
| 59 | origCount = count; |
| 60 | |
| 61 | if (count == 0) { |
| 62 | return(0); |
| 63 | } |
| 64 | character = *pointer&0xff; |
| 65 | pointer++; |
| 66 | count--; |
| 67 | switch (character) { |
| 68 | case 0xa0: |
| 69 | OptAPLmode = 1; |
| 70 | break; |
| 71 | case 0x61: |
| 72 | OptAPLmode = 0; |
| 73 | break; |
| 74 | case 0x95: |
| 75 | OptNullProcessing = 0; |
| 76 | break; |
| 77 | case 0xd5: |
| 78 | OptNullProcessing = 1; |
| 79 | break; |
| 80 | case 0xa9: |
| 81 | OptZonesMode = 1; |
| 82 | break; |
| 83 | case 0xe9: |
| 84 | OptZonesMode = 0; |
| 85 | break; |
| 86 | case 0x85: |
| 87 | OptEnterNL = 1; |
| 88 | break; |
| 89 | case 0xc5: |
| 90 | OptEnterNL = 0; |
| 91 | break; |
| 92 | case 0x83: |
| 93 | OptColFieldTab = 1; |
| 94 | break; |
| 95 | case 0xc3: |
| 96 | OptColFieldTab = 0; |
| 97 | break; |
| 98 | case 0x97: |
| 99 | OptPacing = 0; |
| 100 | break; |
| 101 | case 0xd7: |
| 102 | OptPacing = 1; |
| 103 | break; |
| 104 | case 0xa5: |
| 105 | OptAlphaInNumeric = 1; |
| 106 | break; |
| 107 | case 0xe5: |
| 108 | OptAlphaInNumeric = 0; |
| 109 | break; |
| 110 | case 0xe3: |
| 111 | if (!control && count < 30) { |
| 112 | return(0); /* want more! */ |
| 113 | } |
| 114 | for (i = 0; i < sizeof OptColTabs; i++) { |
| 115 | OptColTabs[i] = 0; |
| 116 | } |
| 117 | if (!count) { |
| 118 | break; |
| 119 | } |
| 120 | j = (*pointer&0xff)-0x40; |
| 121 | count--; |
| 122 | pointer++; |
| 123 | if (j < 0 || j >= 24) { |
| 124 | break; |
| 125 | } |
| 126 | OptHome = j; |
| 127 | if (!count) { |
| 128 | break; |
| 129 | } |
| 130 | j = (*pointer&0xff)-0x40; |
| 131 | count--; |
| 132 | pointer++; |
| 133 | if (j < 0 || j >= 80) { |
| 134 | break; |
| 135 | } |
| 136 | OptLeftMargin = j; |
| 137 | if (!count) { |
| 138 | break; |
| 139 | } |
| 140 | i = count; |
| 141 | if (i > 28) { |
| 142 | i = 28; |
| 143 | } |
| 144 | while (i) { |
| 145 | j = (*pointer&0xff)-0x40; |
| 146 | if (j < 0 || j >= sizeof OptColTabs) { |
| 147 | break; |
| 148 | } |
| 149 | OptColTabs[j] = 1; |
| 150 | i --; |
| 151 | pointer++; |
| 152 | count--; |
| 153 | } |
| 154 | break; |
| 155 | case 0xa6: |
| 156 | OptWordWrap = 1; |
| 157 | break; |
| 158 | case 0xe6: |
| 159 | OptWordWrap = 0; |
| 160 | break; |
| 161 | default: |
| 162 | break; |
| 163 | } |
| 164 | return(origCount - count); |
| 165 | } |