| 1 | /* vprint.c -- v[fs]printf() for 4.[23] BSD systems. */
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| 2 |
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| 3 | /* Copyright (C) 1987,1989 Free Software Foundation, Inc.
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| 4 |
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| 5 | This file is part of GNU Bash, the Bourne Again SHell.
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| 6 |
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| 7 | Bash is free software; you can redistribute it and/or modify it under
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| 8 | the terms of the GNU General Public License as published by the Free
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| 9 | Software Foundation; either version 2, or (at your option) any later
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| 10 | version.
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| 11 |
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| 12 | Bash is distributed in the hope that it will be useful, but WITHOUT ANY
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| 13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or
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| 14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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| 15 | for more details.
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| 16 |
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| 17 | You should have received a copy of the GNU General Public License along
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| 18 | with Bash; see the file COPYING. If not, write to the Free Software
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| 19 | Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
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| 20 |
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| 21 | #include <config.h>
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| 22 |
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| 23 | #if defined (USE_VFPRINTF_EMULATION)
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| 24 |
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| 25 | #include <stdio.h>
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| 26 |
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| 27 | #if !defined (NULL)
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| 28 | # if defined (__STDC__)
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| 29 | # define NULL ((void *)0)
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| 30 | # else
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| 31 | # define NULL 0x0
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| 32 | # endif /* __STDC__ */
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| 33 | #endif /* !NULL */
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| 34 |
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| 35 | /*
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| 36 | * Beware! Don't trust the value returned by either of these functions; it
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| 37 | * seems that pre-4.3-tahoe implementations of _doprnt () return the first
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| 38 | * argument, i.e. a char *.
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| 39 | */
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| 40 | #include <varargs.h>
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| 41 |
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| 42 | int
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| 43 | vfprintf (iop, fmt, ap)
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| 44 | FILE *iop;
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| 45 | char *fmt;
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| 46 | va_list ap;
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| 47 | {
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| 48 | int len;
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| 49 | char localbuf[BUFSIZ];
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| 50 |
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| 51 | if (iop->_flag & _IONBF)
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| 52 | {
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| 53 | iop->_flag &= ~_IONBF;
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| 54 | iop->_ptr = iop->_base = localbuf;
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| 55 | len = _doprnt (fmt, ap, iop);
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| 56 | (void) fflush (iop);
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| 57 | iop->_flag |= _IONBF;
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| 58 | iop->_base = NULL;
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| 59 | iop->_bufsiz = 0;
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| 60 | iop->_cnt = 0;
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| 61 | }
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| 62 | else
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| 63 | len = _doprnt (fmt, ap, iop);
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| 64 | return (ferror (iop) ? EOF : len);
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| 65 | }
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| 66 |
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| 67 | /*
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| 68 | * Ditto for vsprintf
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| 69 | */
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| 70 | int
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| 71 | vsprintf (str, fmt, ap)
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| 72 | char *str, *fmt;
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| 73 | va_list ap;
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| 74 | {
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| 75 | FILE f;
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| 76 | int len;
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| 77 |
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| 78 | f._flag = _IOWRT|_IOSTRG;
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| 79 | f._ptr = str;
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| 80 | f._cnt = 32767;
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| 81 | len = _doprnt (fmt, ap, &f);
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| 82 | *f._ptr = 0;
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| 83 | return (len);
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| 84 | }
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| 85 | #endif /* USE_VFPRINTF_EMULATION */
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