161 lines
4.9 KiB
C
161 lines
4.9 KiB
C
/* vfprintf.c - print to a file. stdio.h */
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/* Copyright 1992-1993 Wind River Systems, Inc. */
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/*
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modification history
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--------------------
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01c,05mar93,jdi documentation cleanup for 5.1.
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01b,20sep92,smb documentation additions
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01a,29jul92,jcf Added OBJ_VERIFY, use fioFormatV()
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+smb taken from UCB stdio
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*/
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/*
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DESCRIPTION
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Chris Torek.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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INCLUDE FILE: stdio.h, stdarg.h
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SEE ALSO: American National Standard X3.159-1989
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NOMANUAL
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*/
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#include "vxWorks.h"
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#include "stdarg.h"
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#include "fioLib.h"
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#include "objLib.h"
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#include "private/stdioP.h"
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/* forward declarations */
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LOCAL STATUS putbuf (char *buffer, int nbytes, FILE *fp);
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/*******************************************************************************
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*
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* vfprintf - write a formatted string to a stream (ANSI)
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*
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* This routine is equivalent to fprintf(), except that it takes the variable
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* arguments to be formatted from a list <vaList> of type `va_list' rather
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* than from in-line arguments.
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*
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* INCLUDE FILES: stdio.h
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*
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* RETURNS:
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* The number of characters written, or a negative value if an
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* output error occurs.
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*
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* SEE ALSO: fprintf()
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*/
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int vfprintf
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(
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FILE * fp, /* stream to write to */
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const char * fmt, /* format string */
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va_list vaList /* arguments to format string */
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)
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{
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uchar_t localbuf[BUFSIZE];
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int ret;
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FILE fake;
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if (OBJ_VERIFY (fp, fpClassId) != OK)
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return (EOF);
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if (cantwrite (fp))
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return (EOF);
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if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) && fp->_file >= 0)
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{
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/*
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* This optimizes an fprintf to unbuffered unix file by creating a
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* temporary buffer. This avoids worries about ungetc buffers and
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* so forth. It is particularly useful for stderr.
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*/
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fake._flags = fp->_flags & ~__SNBF; /* turn on buffering */
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fake._file = fp->_file; /* store fd */
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fake._bf._base = fake._p = localbuf; /* set up the buffer */
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fake._bf._size = fake._w = sizeof(localbuf); /* initialize size */
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fake._lbfsize = 0; /* init to be safe */
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fake._r = 0; /* init to be safe */
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fake._ub._base = NULL; /* init to be safe */
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fake._ub._size = 0; /* init to be safe */
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fake._lb._base = NULL; /* init to be safe */
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fake._lb._size = 0; /* init to be safe */
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objCoreInit (&fake.objCore, fpClassId); /* validate fake fp */
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ret = fioFormatV (fmt, vaList, putbuf, (int) &fake);
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if ((ret >= 0) && fflush (&fake))
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ret = EOF;
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if (fake._flags & __SERR)
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fp->_flags |= __SERR;
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objCoreTerminate (&fake.objCore); /* invalidate fp */
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}
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else
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{
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ret = fioFormatV (fmt, vaList, putbuf, (int) fp);
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ret = (ferror (fp)) ? EOF : ret;
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}
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return (ret);
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}
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/*******************************************************************************
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*
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* putbuf - put a buffer on an output stream
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* NOMANUAL
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*/
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LOCAL STATUS putbuf
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(
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char * buffer, /* source */
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int nbytes, /* number of bytes in source */
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FILE * fp /* stream */
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)
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{
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FAST int ix;
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for (ix = 0; ix < nbytes; ix++)
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putc (buffer [ix], fp);
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return (OK);
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}
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