mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 13:00:06 +00:00
9c38a68999
2000-07-20 Ulrich Drepper <drepper@redhat.com> * libio/Makefile (tests): Add tst_wprintf2. (tst_wprintf2-ARGS): Define. * libio/tst_wprintf2.c: New file. Based on a test case by Yoshito Kawada <KAWADA@jp.ibm.com>. * libio/wfiledoalloc.c: Only allocate external buffer if this hasn't happened yet. * libio/wfileops.c (_IO_wdo_write): Overflow only if there is really something in the buffer. gconv call can write up to end of the buffer, not only _IO_write_end. (_IO_wfile_overflow): Allocate also external buffer. * stdio-common/vfprintf.c (process_string_arg): Handle multibyte strings with precision in vfwprintf correctly. * stdio-common/vfprintf.c: Fix completely broken handling of unbuffered wide character streams. Reported by Yoshito Kawada <KAWADA@jp.ibm.com>.
107 lines
3.4 KiB
C
107 lines
3.4 KiB
C
/* Copyright (C) 1993, 1997, 1999, 2000 Free Software Foundation, Inc.
|
|
This file is part of the GNU IO Library.
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License as
|
|
published by the Free Software Foundation; either version 2, or (at
|
|
your option) any later version.
|
|
|
|
This library is distributed in the hope that it will be useful, but
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this library; see the file COPYING. If not, write to
|
|
the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
|
|
MA 02111-1307, USA.
|
|
|
|
As a special exception, if you link this library with files
|
|
compiled with a GNU compiler to produce an executable, this does
|
|
not cause the resulting executable to be covered by the GNU General
|
|
Public License. This exception does not however invalidate any
|
|
other reasons why the executable file might be covered by the GNU
|
|
General Public License. */
|
|
|
|
/*
|
|
* Copyright (c) 1990 The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms are permitted
|
|
* provided that the above copyright notice and this paragraph are
|
|
* duplicated in all such forms and that any documentation,
|
|
* advertising materials, and other materials related to such
|
|
* distribution and use acknowledge that the software was developed
|
|
* by the University of California, Berkeley. The name of the
|
|
* University may not be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
*/
|
|
|
|
/* Modified for GNU iostream by Per Bothner 1991, 1992. */
|
|
|
|
#ifndef _POSIX_SOURCE
|
|
# define _POSIX_SOURCE
|
|
#endif
|
|
#include "libioP.h"
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#ifdef __STDC__
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
#ifdef _LIBC
|
|
# undef isatty
|
|
# define isatty(Fd) __isatty (Fd)
|
|
#endif
|
|
|
|
/*
|
|
* Allocate a file buffer, or switch to unbuffered I/O.
|
|
* Per the ANSI C standard, ALL tty devices default to line buffered.
|
|
*
|
|
* As a side effect, we set __SOPT or __SNPT (en/dis-able fseek
|
|
* optimisation) right after the _fstat() that finds the buffer size.
|
|
*/
|
|
|
|
int
|
|
_IO_wfile_doallocate (fp)
|
|
_IO_FILE *fp;
|
|
{
|
|
_IO_size_t size;
|
|
int couldbetty;
|
|
wchar_t *p;
|
|
struct _G_stat64 st;
|
|
|
|
/* Allocate room for the external buffer. */
|
|
if (fp->_IO_buf_base == NULL)
|
|
_IO_file_doallocate (fp);
|
|
|
|
if (fp->_fileno < 0 || _IO_SYSSTAT (fp, &st) < 0)
|
|
{
|
|
couldbetty = 0;
|
|
size = _IO_BUFSIZ * sizeof (wchar_t);
|
|
#if 0
|
|
/* do not try to optimise fseek() */
|
|
fp->_flags |= __SNPT;
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
couldbetty = S_ISCHR (st.st_mode);
|
|
#if _IO_HAVE_ST_BLKSIZE
|
|
size = ((st.st_blksize <= 0 ? _IO_BUFSIZ : st.st_blksize)
|
|
* sizeof (wchar_t));
|
|
#else
|
|
size = _IO_BUFSIZ * sizeof (wchar_t);
|
|
#endif
|
|
}
|
|
ALLOC_WBUF (p, size, EOF);
|
|
_IO_wsetb (fp, p, p + size, 1);
|
|
if (couldbetty && isatty (fp->_fileno))
|
|
fp->_flags |= _IO_LINE_BUF;
|
|
return 1;
|
|
}
|