| 1 | #include <stdio.h> |
| 2 | |
| 3 | /* |
| 4 | * see - a cat like program which prints like the ex "print" command. |
| 5 | * It always prints backspaces as "^H". |
| 6 | * |
| 7 | * Bill Joy UCB July 13, 1978 |
| 8 | * |
| 9 | */ |
| 10 | int noeol; |
| 11 | |
| 12 | main(argc, argv) |
| 13 | int argc; |
| 14 | char *argv[]; |
| 15 | { |
| 16 | register c; |
| 17 | char obuf[BUFSIZ]; |
| 18 | |
| 19 | setbuf(stdout, obuf); |
| 20 | argc--, argv++; |
| 21 | if (argc > 0 && argv[0][0] == '-') |
| 22 | noeol++, argc--, argv++; |
| 23 | do { |
| 24 | if (argc > 0) { |
| 25 | if (freopen(argv[0], "r", stdin) == 0) { |
| 26 | perror(argv[0]); |
| 27 | exit(1); |
| 28 | } |
| 29 | argc--, argv++; |
| 30 | } |
| 31 | for (;;) { |
| 32 | c = getchar(); |
| 33 | if (c == -1) |
| 34 | break; |
| 35 | c &= 0177; |
| 36 | if (c == 0177) |
| 37 | putchar('^'), c = '?'; |
| 38 | if (c == 033) |
| 39 | c = '$'; |
| 40 | if (c < ' ') |
| 41 | switch (c) { |
| 42 | |
| 43 | case '\n': |
| 44 | break; |
| 45 | |
| 46 | default: |
| 47 | putchar('^'); |
| 48 | c |= 0100; |
| 49 | } |
| 50 | if (c == '\n' && !noeol) |
| 51 | putchar('$'); |
| 52 | putchar(c); |
| 53 | if (c == '\n') |
| 54 | fflush(stdout); |
| 55 | } |
| 56 | } while (argc > 0); |
| 57 | exit(0); |
| 58 | } |