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51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <ansidecl.h>
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#include <errno.h>
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#include <limits.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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/* Write formatted output to S according to the format string
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FORMAT, using the argument list in ARG. */
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int
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DEFUN(vsprintf, (s, format, arg),
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char *s AND CONST char *format AND va_list arg)
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{
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int done;
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FILE f;
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memset((PTR) &f, 0, sizeof(f));
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f.__magic = _IOMAGIC;
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f.__mode.__write = 1;
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f.__bufp = f.__buffer = (char *) s;
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f.__put_limit = (char *) ULONG_MAX;
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f.__bufsize = (size_t) (f.__put_limit - f.__bufp);
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f.__get_limit = f.__buffer;
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f.__room_funcs.__output = NULL;
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f.__seen = 1;
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done = vfprintf(&f, format, arg);
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*f.__bufp = '\0';
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return done;
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}
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