| 1 | #include <stdio.h> |
| 2 | /* |
| 3 | * ssp - single space output |
| 4 | * |
| 5 | * Bill Joy UCB August 25, 1977 |
| 6 | * |
| 7 | * Compress multiple empty lines to a single empty line. |
| 8 | * Option - compresses to nothing. |
| 9 | */ |
| 10 | |
| 11 | char poof, hadsome; |
| 12 | |
| 13 | int ibuf[256]; |
| 14 | |
| 15 | |
| 16 | main(argc, argv) |
| 17 | int argc; |
| 18 | char *argv[]; |
| 19 | { |
| 20 | register int c; |
| 21 | FILE *f; |
| 22 | |
| 23 | argc--, argv++; |
| 24 | do { |
| 25 | while (argc > 0 && argv[0][0] == '-') { |
| 26 | poof = 1; |
| 27 | argc--, argv++; |
| 28 | } |
| 29 | f = stdin; |
| 30 | if (argc > 0) { |
| 31 | if ((f=fopen(argv[0], "r")) == NULL) { |
| 32 | fflush(f); |
| 33 | perror(argv[0]); |
| 34 | exit(1); |
| 35 | } |
| 36 | argc--, argv++; |
| 37 | } |
| 38 | for (;;) { |
| 39 | c = getc(f); |
| 40 | if (c == -1) |
| 41 | break; |
| 42 | if (c != '\n') { |
| 43 | hadsome = 1; |
| 44 | putchar(c); |
| 45 | continue; |
| 46 | } |
| 47 | /* |
| 48 | * Eat em up |
| 49 | */ |
| 50 | if (hadsome) |
| 51 | putchar('\n'); |
| 52 | c = getc(f); |
| 53 | if (c == -1) |
| 54 | break; |
| 55 | if (c != '\n') { |
| 56 | putchar(c); |
| 57 | hadsome = 1; |
| 58 | continue; |
| 59 | } |
| 60 | do |
| 61 | c = getc(f); |
| 62 | while (c == '\n'); |
| 63 | if (!poof && hadsome) |
| 64 | putchar('\n'); |
| 65 | if (c == -1) |
| 66 | break; |
| 67 | putchar(c); |
| 68 | hadsome = 1; |
| 69 | } |
| 70 | } while (argc > 0); |
| 71 | } |