projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 31cef89c | 1 | static char *sccsid = "@(#)ssp.c 4.1 (Berkeley) 10/1/80"; |
| 45964d3d BJ |
2 | #include <stdio.h> |
| 3 | /* | |
| 4 | * ssp - single space output | |
| 5 | * | |
| 6 | * Bill Joy UCB August 25, 1977 | |
| 7 | * | |
| 8 | * Compress multiple empty lines to a single empty line. | |
| 9 | * Option - compresses to nothing. | |
| 10 | */ | |
| 11 | ||
| 12 | char poof, hadsome; | |
| 13 | ||
| 14 | int ibuf[256]; | |
| 15 | ||
| 16 | ||
| 17 | main(argc, argv) | |
| 18 | int argc; | |
| 19 | char *argv[]; | |
| 20 | { | |
| 21 | register int c; | |
| 22 | FILE *f; | |
| 23 | ||
| 24 | argc--, argv++; | |
| 25 | do { | |
| 26 | while (argc > 0 && argv[0][0] == '-') { | |
| 27 | poof = 1; | |
| 28 | argc--, argv++; | |
| 29 | } | |
| 30 | f = stdin; | |
| 31 | if (argc > 0) { | |
| 32 | if ((f=fopen(argv[0], "r")) == NULL) { | |
| 33 | fflush(f); | |
| 34 | perror(argv[0]); | |
| 35 | exit(1); | |
| 36 | } | |
| 37 | argc--, argv++; | |
| 38 | } | |
| 39 | for (;;) { | |
| 40 | c = getc(f); | |
| 41 | if (c == -1) | |
| 42 | break; | |
| 43 | if (c != '\n') { | |
| 44 | hadsome = 1; | |
| 45 | putchar(c); | |
| 46 | continue; | |
| 47 | } | |
| 48 | /* | |
| 49 | * Eat em up | |
| 50 | */ | |
| 51 | if (hadsome) | |
| 52 | putchar('\n'); | |
| 53 | c = getc(f); | |
| 54 | if (c == -1) | |
| 55 | break; | |
| 56 | if (c != '\n') { | |
| 57 | putchar(c); | |
| 58 | hadsome = 1; | |
| 59 | continue; | |
| 60 | } | |
| 61 | do | |
| 62 | c = getc(f); | |
| 63 | while (c == '\n'); | |
| 64 | if (!poof && hadsome) | |
| 65 | putchar('\n'); | |
| 66 | if (c == -1) | |
| 67 | break; | |
| 68 | putchar(c); | |
| 69 | hadsome = 1; | |
| 70 | } | |
| 71 | } while (argc > 0); | |
| 72 | } |