| 1 | #include <sys/types.h> |
| 2 | #include <stat.h> |
| 3 | |
| 4 | /* |
| 5 | * transcribe [ - ] [ -delay ] file |
| 6 | * Bill Joy UCB May 1977 |
| 7 | * |
| 8 | * watch a file and copy it out |
| 9 | * as it grows. default interval for |
| 10 | * copying is 15 seconds. |
| 11 | * option - suppresses complete file from being copied out |
| 12 | * and only gives new stuff. |
| 13 | */ |
| 14 | struct stat stbuf; |
| 15 | char buf[512]; |
| 16 | int i; |
| 17 | off_t offset; |
| 18 | int interval 15; |
| 19 | int timeleft 32000; |
| 20 | char *progname; |
| 21 | int whole 1; |
| 22 | |
| 23 | main(argc, argv) |
| 24 | int argc; |
| 25 | char *argv[]; |
| 26 | { |
| 27 | progname = *argv++; |
| 28 | argc--; |
| 29 | nxtarg: |
| 30 | if (argc > 1 && argv[0][0] == '-' && argv[0][1] == 0) { |
| 31 | argc--; |
| 32 | argv++; |
| 33 | whole = 0; |
| 34 | goto nxtarg; |
| 35 | } |
| 36 | if (argc > 1 && argv[0][0] == '+') { |
| 37 | timeleft = getdel(argv[0] + 1); |
| 38 | argc--; |
| 39 | argv++; |
| 40 | goto nxtarg; |
| 41 | } |
| 42 | if (argc > 1 && argv[0][0] == '-') { |
| 43 | interval = getdel(argv[0] + 1); |
| 44 | argv++; |
| 45 | argc--; |
| 46 | goto nxtarg; |
| 47 | } |
| 48 | if (argc != 1) { |
| 49 | printf("Usage: %s [ - ] [ -interval ] file\n", progname); |
| 50 | exit(1); |
| 51 | } |
| 52 | if (interval <= 0) { |
| 53 | printf("Unreasonable interval\n"); |
| 54 | exit(1); |
| 55 | } |
| 56 | close(0); |
| 57 | if (open(argv[0], 0) < 0) { |
| 58 | perror(argv[0]); |
| 59 | exit(1); |
| 60 | } |
| 61 | if (whole == 0) { |
| 62 | fstat(0, &stbuf); |
| 63 | offset = stbuf.st_size; |
| 64 | } |
| 65 | do { |
| 66 | fstat(0, &stbuf); |
| 67 | if (stbuf.st_size > offset) { |
| 68 | lseek(0, (long) offset, 0); |
| 69 | while ((i = read(0, buf, sizeof buf)) > 0) { |
| 70 | offset =+ i; |
| 71 | write(1, buf, i); |
| 72 | } |
| 73 | } |
| 74 | sleep(interval); |
| 75 | timeleft =- interval; |
| 76 | } while (timeleft > 0); |
| 77 | } |
| 78 | |
| 79 | getdel(cp) |
| 80 | char *cp; |
| 81 | { |
| 82 | register int j; |
| 83 | |
| 84 | j = 0; |
| 85 | do { |
| 86 | number(*cp); |
| 87 | j = j * 10 + *cp++ - '0'; |
| 88 | } while (*cp); |
| 89 | return (j); |
| 90 | } |
| 91 | |
| 92 | number(c) |
| 93 | char c; |
| 94 | { |
| 95 | if (c < '0' || c > '9') { |
| 96 | printf("Bad number for interval\n"); |
| 97 | exit(1); |
| 98 | } |
| 99 | } |