82 lines
1.1 KiB
C
82 lines
1.1 KiB
C
/*
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* tee-- pipe fitting
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*/
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#include <u.h>
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#include <libc.h>
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enum {
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FDSTART = 3,
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};
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int uflag;
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int aflag;
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char in[8192];
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int intignore(void*, char*);
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void
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main(int argc, char **argv)
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{
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int i;
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int r, n;
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ARGBEGIN {
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case 'a':
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aflag++;
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break;
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case 'i':
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atnotify(intignore, 1);
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break;
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case 'u':
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uflag++;
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/* uflag is ignored and undocumented; it's a relic from Unix */
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break;
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default:
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fprint(2, "usage: tee [-ai] [file ...]\n");
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exits("usage");
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} ARGEND
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USED(argc);
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n = 0;
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while(*argv) {
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if(aflag) {
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i = open(argv[0], OWRITE);
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if(i < 0)
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i = create(argv[0], OWRITE, 0666);
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seek(i, 0L, 2);
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} else
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i = create(argv[0], OWRITE, 0666);
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if(i < 0) {
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fprint(2, "tee: cannot open %s: %r\n", argv[0]);
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} else {
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if(i != n+FDSTART)
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dup(i, n+FDSTART);
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n++;
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}
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argv++;
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}
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for(;;) {
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r = read(0, in, sizeof in);
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if(r <= 0)
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exits(nil);
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for(i=0; i<n; i++)
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write(i+FDSTART, in, r);
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write(1, in, r);
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}
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}
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int
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intignore(void *a, char *msg)
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{
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USED(a);
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if(strcmp(msg, "interrupt") == 0)
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return 1;
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return 0;
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}
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