| 1 | #include <stdio.h> |
| 2 | |
| 3 | #define BACKSPACE 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 was a piece of the editor ex. |
| 11 | */ |
| 12 | |
| 13 | #define LBSIZE 512 |
| 14 | |
| 15 | char linebuf[LBSIZE], genbuf[LBSIZE]; |
| 16 | char *strcpy(); |
| 17 | |
| 18 | main(argc, argv) |
| 19 | int argc; |
| 20 | char *argv[]; |
| 21 | { |
| 22 | register c; |
| 23 | register char *lp; |
| 24 | char obuf[BUFSIZ]; |
| 25 | |
| 26 | setbuf(stdout, obuf); |
| 27 | argc--; |
| 28 | argv++; |
| 29 | do { |
| 30 | if (argc > 0) { |
| 31 | if (freopen(argv[0], "r", stdin) == NULL) { |
| 32 | perror(argv[0]); |
| 33 | exit(1); |
| 34 | } |
| 35 | argc--; argv++; |
| 36 | } |
| 37 | while (fgets(linebuf, sizeof linebuf, stdin) != 0) { |
| 38 | for (lp = linebuf; *lp; lp++) |
| 39 | continue; |
| 40 | *--lp = 0; |
| 41 | doulg(); |
| 42 | dographic(); |
| 43 | if (genbuf[0]) |
| 44 | printf("\n%s", genbuf); |
| 45 | putchar('\n'); |
| 46 | fflush(stdout); |
| 47 | } |
| 48 | } while (argc > 0); |
| 49 | exit(0); |
| 50 | } |
| 51 | |
| 52 | dographic() |
| 53 | { |
| 54 | register char *lp; |
| 55 | register c; |
| 56 | |
| 57 | for (lp = linebuf; c = *lp++;) { |
| 58 | switch (c) { |
| 59 | case '\b': |
| 60 | if (BACKSPACE == 0) |
| 61 | c = '?'; |
| 62 | break; |
| 63 | default: |
| 64 | if (c < ' ' || c == 0177) |
| 65 | c = '?'; |
| 66 | break; |
| 67 | case '\t': |
| 68 | break; |
| 69 | } |
| 70 | putchar(c); |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | doulg() |
| 75 | { |
| 76 | register char *lp, *gp; |
| 77 | char *maxgp; |
| 78 | register c; |
| 79 | char csw; |
| 80 | int col; |
| 81 | |
| 82 | gp = genbuf; |
| 83 | *gp = 0; |
| 84 | maxgp = gp; |
| 85 | col = 0; |
| 86 | for (lp = linebuf; c = *lp++;) { |
| 87 | switch (c) { |
| 88 | case '\t': |
| 89 | while ((col & 7) != 7) { |
| 90 | *gp++ = ' '; |
| 91 | if (gp >= &genbuf[LBSIZE - 2]) |
| 92 | goto ovflo; |
| 93 | col++; |
| 94 | } |
| 95 | break; |
| 96 | default: |
| 97 | if (gp >= maxgp) |
| 98 | break; |
| 99 | c =| (*gp & QUOTE); |
| 100 | break; |
| 101 | case '_': |
| 102 | if (gp >= maxgp) |
| 103 | c = QUOTE; |
| 104 | else |
| 105 | c = *gp | QUOTE; |
| 106 | break; |
| 107 | case '\b': |
| 108 | if (gp > genbuf) { |
| 109 | gp--; |
| 110 | col--; |
| 111 | } |
| 112 | continue; |
| 113 | } |
| 114 | if (gp >= &genbuf[LBSIZE - 2]) { |
| 115 | ovflo: |
| 116 | fprintf(stderr, "Line too long\n"); |
| 117 | exit(1); |
| 118 | } |
| 119 | *gp++ = c; |
| 120 | if (gp > maxgp) |
| 121 | maxgp = gp; |
| 122 | col++; |
| 123 | } |
| 124 | *maxgp = 0; |
| 125 | strcpy(linebuf, genbuf); |
| 126 | for (lp = linebuf, gp = genbuf; c = *lp; gp++, lp++) |
| 127 | if (c & QUOTE) { |
| 128 | c =& 0177; |
| 129 | if (c == 0) |
| 130 | *lp = '_', *gp = ' '; |
| 131 | else |
| 132 | *lp = c, *gp = '-'; |
| 133 | } else |
| 134 | *gp = ' '; |
| 135 | --gp; |
| 136 | while (gp >= genbuf && *gp == ' ') |
| 137 | --gp; |
| 138 | gp[1] = 0; |
| 139 | } |