| rsc | bc7cb1a | 2003-11-23 18:04:47 +0000 | [diff] [blame] | 1 | /* |
| 2 | * tee-- pipe fitting |
| 3 | */ |
| 4 | |
| 5 | #include <u.h> |
| 6 | #include <libc.h> |
| 7 | |
| 8 | int uflag; |
| 9 | int aflag; |
| 10 | int openf[100]; |
| 11 | |
| 12 | char in[8192]; |
| 13 | |
| 14 | int intignore(void*, char*); |
| 15 | |
| 16 | void |
| 17 | main(int argc, char **argv) |
| 18 | { |
| 19 | int i; |
| 20 | int r, n; |
| 21 | |
| 22 | ARGBEGIN { |
| 23 | case 'a': |
| 24 | aflag++; |
| 25 | break; |
| 26 | |
| 27 | case 'i': |
| 28 | atnotify(intignore, 1); |
| 29 | break; |
| 30 | |
| 31 | case 'u': |
| 32 | uflag++; |
| 33 | /* uflag is ignored and undocumented; it's a relic from Unix */ |
| 34 | break; |
| 35 | |
| 36 | default: |
| 37 | fprint(2, "usage: tee [-ai] [file ...]\n"); |
| 38 | exits("usage"); |
| 39 | } ARGEND |
| 40 | |
| 41 | USED(argc); |
| 42 | n = 0; |
| 43 | while(*argv) { |
| 44 | if(aflag) { |
| 45 | openf[n] = open(argv[0], OWRITE); |
| 46 | if(openf[n] < 0) |
| 47 | openf[n] = create(argv[0], OWRITE, 0666); |
| 48 | seek(openf[n], 0L, 2); |
| 49 | } else |
| 50 | openf[n] = create(argv[0], OWRITE, 0666); |
| 51 | if(openf[n] < 0) { |
| 52 | fprint(2, "tee: cannot open %s: %r\n", argv[0]); |
| 53 | } else |
| 54 | n++; |
| 55 | argv++; |
| 56 | } |
| 57 | openf[n++] = 1; |
| 58 | |
| 59 | for(;;) { |
| 60 | r = read(0, in, sizeof in); |
| 61 | if(r <= 0) |
| 62 | exits(nil); |
| 63 | for(i=0; i<n; i++) |
| 64 | write(openf[i], in, r); |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | int |
| 69 | intignore(void *a, char *msg) |
| 70 | { |
| 71 | USED(a); |
| 72 | if(strcmp(msg, "interrupt") == 0) |
| 73 | return 1; |
| 74 | return 0; |
| 75 | } |
