| 1 | # |
| 2 | #define BACKSPACE 0 |
| 3 | #define UPPERCASE 0 |
| 4 | #define QUOTE 0200 |
| 5 | /* |
| 6 | * iul - a cat like program to indicate underlining for graphic terminals |
| 7 | * |
| 8 | * Bill Joy UCB June 22, 1977 |
| 9 | * |
| 10 | * This program is actually a piece of the editor ex. |
| 11 | */ |
| 12 | |
| 13 | #define LBSIZE 512 |
| 14 | |
| 15 | char linebuf[LBSIZE], genbuf[LBSIZE]; |
| 16 | int ibuf[259]; |
| 17 | extern int fout; |
| 18 | |
| 19 | main(argc, argv) |
| 20 | int argc; |
| 21 | char *argv[]; |
| 22 | { |
| 23 | register c; |
| 24 | register char *lp; |
| 25 | |
| 26 | fout = dup(1); |
| 27 | argc--; |
| 28 | argv++; |
| 29 | do { |
| 30 | if (argc > 0) { |
| 31 | close(ibuf[0]); |
| 32 | if (fopen(argv[0], ibuf) < 0) { |
| 33 | perror(argv[0]); |
| 34 | flush(); |
| 35 | exit(1); |
| 36 | } |
| 37 | argc--; |
| 38 | argv++; |
| 39 | } |
| 40 | lp = linebuf; |
| 41 | for (;;) { |
| 42 | c = getc(ibuf); |
| 43 | if (c < 0) |
| 44 | break; |
| 45 | if (c == '\n') { |
| 46 | *lp = 0; |
| 47 | doulg(); |
| 48 | dographic(); |
| 49 | if (genbuf[0]) |
| 50 | printf("\n%s", genbuf); |
| 51 | putchar('\n'); |
| 52 | lp = linebuf; |
| 53 | continue; |
| 54 | } |
| 55 | if (lp >= &linebuf[LBSIZE - 2]) { |
| 56 | flush(); |
| 57 | printf("Input line exceeds 500 characters\n"); |
| 58 | flush(); |
| 59 | exit(1); |
| 60 | } |
| 61 | *lp++ = c; |
| 62 | } |
| 63 | flush(); |
| 64 | } while (argc > 0); |
| 65 | flush(); |
| 66 | } |
| 67 | |
| 68 | dographic() |
| 69 | { |
| 70 | register char *lp; |
| 71 | register c; |
| 72 | |
| 73 | for (lp = linebuf; c = *lp++;) { |
| 74 | switch (c) { |
| 75 | case '\b': |
| 76 | if (BACKSPACE == 0) |
| 77 | c = '?'; |
| 78 | break; |
| 79 | default: |
| 80 | if (c < ' ' || c == 0177) |
| 81 | c = '?'; |
| 82 | /* |
| 83 | else if (UPPERCASE && ucletter(c)) { |
| 84 | putchar('\\'); |
| 85 | c = letter(c); |
| 86 | } |
| 87 | */ |
| 88 | break; |
| 89 | case '\t': |
| 90 | break; |
| 91 | } |
| 92 | putchar(c); |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | doulg() |
| 97 | { |
| 98 | register char *lp, *gp; |
| 99 | char *maxgp; |
| 100 | register c; |
| 101 | char csw; |
| 102 | int col; |
| 103 | |
| 104 | gp = genbuf; |
| 105 | *gp = 0; |
| 106 | maxgp = gp; |
| 107 | col = 0; |
| 108 | for (lp = linebuf; c = *lp++;) { |
| 109 | switch (c) { |
| 110 | case '\t': |
| 111 | while ((col & 7) != 7) { |
| 112 | *gp++ = ' '; |
| 113 | if (gp >= &genbuf[LBSIZE - 2]) |
| 114 | goto ovflo; |
| 115 | col++; |
| 116 | } |
| 117 | break; |
| 118 | default: |
| 119 | if (gp >= maxgp) |
| 120 | break; |
| 121 | c =| (*gp & QUOTE); |
| 122 | break; |
| 123 | case '_': |
| 124 | if (gp >= maxgp) |
| 125 | c = QUOTE; |
| 126 | else |
| 127 | c = *gp | QUOTE; |
| 128 | break; |
| 129 | case '\b': |
| 130 | if (gp > genbuf) { |
| 131 | gp--; |
| 132 | col--; |
| 133 | } |
| 134 | continue; |
| 135 | } |
| 136 | if (gp >= &genbuf[LBSIZE - 2]) { |
| 137 | ovflo: |
| 138 | flush(); |
| 139 | printf("Line too long for this filter\n"); |
| 140 | flush(); |
| 141 | exit(1); |
| 142 | } |
| 143 | *gp++ = c; |
| 144 | if (gp > maxgp) |
| 145 | maxgp = gp; |
| 146 | col++; |
| 147 | } |
| 148 | *maxgp = 0; |
| 149 | strcpy(linebuf, genbuf); |
| 150 | for (lp = linebuf, gp = genbuf; c = *lp; gp++, lp++) |
| 151 | if (c & QUOTE) { |
| 152 | c =& 0177; |
| 153 | if (c == 0) |
| 154 | *lp = '_', *gp = ' '; |
| 155 | else |
| 156 | *lp = c, *gp = '-'; |
| 157 | } else |
| 158 | *gp = ' '; |
| 159 | --gp; |
| 160 | while (gp >= genbuf && *gp == ' ') |
| 161 | --gp; |
| 162 | gp[1] = 0; |
| 163 | } |
| 164 | |
| 165 | strcpy(oto, from) |
| 166 | char *oto; |
| 167 | register char *from; |
| 168 | { |
| 169 | register char *to; |
| 170 | |
| 171 | to = oto; |
| 172 | while (*to++ = *from++) |
| 173 | continue; |
| 174 | return (oto); |
| 175 | } |