| 1 | /* |
| 2 | * Copyright (c) 1984-1987 by the Regents of the |
| 3 | * University of California and by Gregory Glenn Minshall. |
| 4 | * |
| 5 | * Permission to use, copy, modify, and distribute these |
| 6 | * programs and their documentation for any purpose and |
| 7 | * without fee is hereby granted, provided that this |
| 8 | * copyright and permission appear on all copies and |
| 9 | * supporting documentation, the name of the Regents of |
| 10 | * the University of California not be used in advertising |
| 11 | * or publicity pertaining to distribution of the programs |
| 12 | * without specific prior permission, and notice be given in |
| 13 | * supporting documentation that copying and distribution is |
| 14 | * by permission of the Regents of the University of California |
| 15 | * and by Gregory Glenn Minshall. Neither the Regents of the |
| 16 | * University of California nor Gregory Glenn Minshall make |
| 17 | * representations about the suitability of this software |
| 18 | * for any purpose. It is provided "as is" without |
| 19 | * express or implied warranty. |
| 20 | */ |
| 21 | |
| 22 | #ifndef lint |
| 23 | static char sccsid[] = "@(#)options.c 1.3 (Berkeley) %G%"; |
| 24 | #endif /* ndef lint */ |
| 25 | |
| 26 | /* |
| 27 | * this file contains the definitions, initialization, and processing of |
| 28 | * commands to handle the various local options (APL ON, etc.) |
| 29 | */ |
| 30 | |
| 31 | #include "options.h" |
| 32 | |
| 33 | #include "../general/globals.h" |
| 34 | #include "options.ext" |
| 35 | |
| 36 | void |
| 37 | OptInit() |
| 38 | { |
| 39 | register int i; |
| 40 | |
| 41 | OptAPLmode = 0; |
| 42 | OptNullProcessing = 1; /* improved null processing */ |
| 43 | OptZonesMode = 0; /* zones mode off */ |
| 44 | OptEnterNL = 0; /* regular enter/new line keys */ |
| 45 | OptColFieldTab = 0; /* regular column/field tab keys */ |
| 46 | OptPacing = 1; /* do pacing */ |
| 47 | OptAlphaInNumeric = 0; /* allow alpha in numeric fields */ |
| 48 | for (i = 0; i < sizeof OptColTabs; i++) { |
| 49 | OptColTabs[i] = ((i%8) == 0); /* every 8 columns */ |
| 50 | } |
| 51 | OptHome = 0; |
| 52 | OptLeftMargin = 0; |
| 53 | OptWordWrap = 0; |
| 54 | } |
| 55 | |
| 56 | OptOrder(pointer, count, control) |
| 57 | char *pointer; |
| 58 | int count; |
| 59 | int control; |
| 60 | { |
| 61 | int i, j, character, origCount; |
| 62 | |
| 63 | origCount = count; |
| 64 | |
| 65 | if (count == 0) { |
| 66 | return(0); |
| 67 | } |
| 68 | character = *pointer&0xff; |
| 69 | pointer++; |
| 70 | count--; |
| 71 | switch (character) { |
| 72 | case 0xa0: |
| 73 | OptAPLmode = 1; |
| 74 | break; |
| 75 | case 0x61: |
| 76 | OptAPLmode = 0; |
| 77 | break; |
| 78 | case 0x95: |
| 79 | OptNullProcessing = 0; |
| 80 | break; |
| 81 | case 0xd5: |
| 82 | OptNullProcessing = 1; |
| 83 | break; |
| 84 | case 0xa9: |
| 85 | OptZonesMode = 1; |
| 86 | break; |
| 87 | case 0xe9: |
| 88 | OptZonesMode = 0; |
| 89 | break; |
| 90 | case 0x85: |
| 91 | OptEnterNL = 1; |
| 92 | break; |
| 93 | case 0xc5: |
| 94 | OptEnterNL = 0; |
| 95 | break; |
| 96 | case 0x83: |
| 97 | OptColFieldTab = 1; |
| 98 | break; |
| 99 | case 0xc3: |
| 100 | OptColFieldTab = 0; |
| 101 | break; |
| 102 | case 0x97: |
| 103 | OptPacing = 0; |
| 104 | break; |
| 105 | case 0xd7: |
| 106 | OptPacing = 1; |
| 107 | break; |
| 108 | case 0xa5: |
| 109 | OptAlphaInNumeric = 1; |
| 110 | break; |
| 111 | case 0xe5: |
| 112 | OptAlphaInNumeric = 0; |
| 113 | break; |
| 114 | case 0xe3: |
| 115 | if (!control && count < 30) { |
| 116 | return(0); /* want more! */ |
| 117 | } |
| 118 | for (i = 0; i < sizeof OptColTabs; i++) { |
| 119 | OptColTabs[i] = 0; |
| 120 | } |
| 121 | if (!count) { |
| 122 | break; |
| 123 | } |
| 124 | j = (*pointer&0xff)-0x40; |
| 125 | count--; |
| 126 | pointer++; |
| 127 | if (j < 0 || j >= 24) { |
| 128 | break; |
| 129 | } |
| 130 | OptHome = j; |
| 131 | if (!count) { |
| 132 | break; |
| 133 | } |
| 134 | j = (*pointer&0xff)-0x40; |
| 135 | count--; |
| 136 | pointer++; |
| 137 | if (j < 0 || j >= 80) { |
| 138 | break; |
| 139 | } |
| 140 | OptLeftMargin = j; |
| 141 | if (!count) { |
| 142 | break; |
| 143 | } |
| 144 | i = count; |
| 145 | if (i > 28) { |
| 146 | i = 28; |
| 147 | } |
| 148 | while (i) { |
| 149 | j = (*pointer&0xff)-0x40; |
| 150 | if (j < 0 || j >= sizeof OptColTabs) { |
| 151 | break; |
| 152 | } |
| 153 | OptColTabs[j] = 1; |
| 154 | i --; |
| 155 | pointer++; |
| 156 | count--; |
| 157 | } |
| 158 | break; |
| 159 | case 0xa6: |
| 160 | OptWordWrap = 1; |
| 161 | break; |
| 162 | case 0xe6: |
| 163 | OptWordWrap = 0; |
| 164 | break; |
| 165 | default: |
| 166 | break; |
| 167 | } |
| 168 | return(origCount - count); |
| 169 | } |