5773a8f22b
This forces the data to be read as soon as they are available and a simple cat(1) when stdin is referring to a tty works as expected.
21 lines
423 B
C
21 lines
423 B
C
/* See LICENSE file for copyright and license details. */
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#include <stdio.h>
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#include <unistd.h>
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#include "../text.h"
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#include "../util.h"
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void
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concat(FILE *fp1, const char *s1, FILE *fp2, const char *s2)
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{
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char buf[BUFSIZ];
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ssize_t n;
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while ((n = read(fileno(fp1), buf, sizeof buf)) > 0) {
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if (write(fileno(fp2), buf, n) != n)
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eprintf("%s: write error:", s2);
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}
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if (n < 0)
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eprintf("%s: read error:", s1);
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}
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