gcc/libstdc++-v3/libio/wfiledoalloc.c
Mark Mitchell 3c97056f54 c_io_libio.cc (basic_file<char>::__basic_file): Don't pass a NULL _IO_wide_data to _IO_no_init when...
* config/c_io_libio.cc (basic_file<char>::__basic_file):
	Don't pass a NULL _IO_wide_data to _IO_no_init when
	_GLIBCPP_USE_WCHAR_T is not defined.
	* config/c_io_libio.h (_IO_codecvt): Don't declare when
	_GLIBCPP_USE_WCHAR_T is not defined.
	* config/c_io_libio_codecvt.c: Don't compile it
	when _GLIBCPP_USE_WCHAR_T is not defined.
	* include/bits/codecvt.h (codecvt<_InternT, _ExternT, __enc_traits):
	Don't define this specialization when _GLIBCPP_USE_WCHAR_T
	is not defined.
	* include/bits/locale_facets.h (<bits/std_cwctype.h>): Don't
	include it when _GLIBCPP_USE_WCHAR_T is not defined.
	* src/codecvt.cc (__enc_traits::_S_max_size): Don't define
	when _GLIBCPP_USE_WCHAR_T is not defined.
	* src/localename.cc (locale::_Impl::_M_construct_collate):
	Don't call wide-character functions when _GLIBCPP_USE_WCHAR_T is
	not defined.
	(locale::_Impl::_M_construct_ctype): Likewise.
	(locale::_Impl::_M_construct_monetary): Likewise.
	(locale::_Impl::_M_construct_numeric): Likewise.
	(locale::_Impl::_M_construct_time): Likewise.
	(locale::_Impl::_M_construct_messages): Likewise.

	* iofopen.c (_IO_new_fopen): Don't define `_IO_wide_data wd'
	if _GLIBCPP_USE_WCHAR_T is not defined.
	* iofwide.c: Don't define codecvt functions when
	_GLIBCPP_USE_WCHAR_T is not defined.
	(_IO_fwide): Don't try to put the stream in wide mode when
	_GLIBCPP_USE_WCHAR_T is not defined.
	* libio.h (_IO_wide_data): Define it as an incomplete struct
	when _GLIBCPP_USE_WCHAR_T is not defined.
	* wfiledoalloc.c: Don't define anything when
	_GLIBCPP_USE_WCHAR_T is not defined.
	* wfileops.c: Likewise.
	* wgenops.c: Likewise.

From-SVN: r37131
2000-10-29 21:52:54 +00:00

109 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"
#ifdef _GLIBCPP_USE_WCHAR_T
#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;
#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;
#else
size = _IO_BUFSIZ;
#endif
}
ALLOC_WBUF (p, size * sizeof (wchar_t), EOF);
_IO_wsetb (fp, p, p + size, 1);
if (couldbetty && isatty (fp->_fileno))
fp->_flags |= _IO_LINE_BUF;
return 1;
}
#endif /* _GLIBCPP_USE_WCHAR_T */