36 lines
1.0 KiB
C
36 lines
1.0 KiB
C
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/*
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* Copyright 1987, 1988 by the Massachusetts Institute of Technology.
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* For copying and distribution information, please see the file
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* <Copyright.MIT>.
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*
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* form: getst.c,v 4.5 88/11/15 16:31:39 jtkohl Exp $
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* $Id: getst.c,v 1.2 1994/07/19 19:25:33 g89r4222 Exp $
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*/
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#ifndef lint
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static char rcsid[] =
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"$Id: getst.c,v 1.2 1994/07/19 19:25:33 g89r4222 Exp $";
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#endif /* lint */
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/*
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* getst() takes a file descriptor, a string and a count. It reads
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* from the file until either it has read "count" characters, or until
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* it reads a null byte. When finished, what has been read exists in
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* the given string "s". If "count" characters were actually read, the
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* last is changed to a null, so the returned string is always null-
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* terminated. getst() returns the number of characters read, including
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* the null terminator.
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*/
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getst(fd, s, n)
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int fd;
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register char *s;
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{
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register count = n;
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while (read(fd, s, 1) > 0 && --count)
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if (*s++ == '\0')
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return (n - count);
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*s = '\0';
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return (n - count);
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}
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