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Diffstat (limited to 'contrib/libio/stdstreams.cc')
| -rw-r--r-- | contrib/libio/stdstreams.cc | 153 |
1 files changed, 0 insertions, 153 deletions
diff --git a/contrib/libio/stdstreams.cc b/contrib/libio/stdstreams.cc deleted file mode 100644 index 7a74eaa..0000000 --- a/contrib/libio/stdstreams.cc +++ /dev/null @@ -1,153 +0,0 @@ -/* This is part of libio/iostream, providing -*- C++ -*- input/output. -Copyright (C) 1993 Free Software Foundation - -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. */ - -/* Written by Per Bothner (bothner@cygnus.com). */ - -#include "libioP.h" -#include "streambuf.h" -#include <stdio.h> - -// The ANSI draft requires that operations on cin/cout/cerr can be -// mixed with operations on stdin/stdout/stderr on a character by -// character basis. This normally requires that the streambuf's -// used by cin/cout/cerr be stdiostreams. However, if the stdio -// implementation is the one that is built using this library, -// then we don't need to, since in that case stdin/stdout/stderr -// are identical to _IO_stdin/_IO_stdout/_IO_stderr. - -#include <libio.h> - -#ifdef _STDIO_USES_IOSTREAM -#define CIN_SBUF _IO_stdin_ -#define COUT_SBUF _IO_stdout_ -#define CERR_SBUF _IO_stderr_ -static int use_stdiobuf = 0; -#else -#define CIN_SBUF _IO_stdin_buf -#define COUT_SBUF _IO_stdout_buf -#define CERR_SBUF _IO_stderr_buf -static int use_stdiobuf = 1; -#endif - -#define cin CIN -#define cout COUT -#define cerr CERR -#define clog CLOG -#include "iostream.h" -#undef cin -#undef cout -#undef cerr -#undef clog - -#ifdef __GNUG__ -#define PAD 0 /* g++ allows 0-length arrays. */ -#else -#define PAD 1 -#endif -struct _fake_istream { - struct myfields { -#ifdef __GNUC__ - _ios_fields *vb; /* pointer to virtual base class ios */ - _IO_ssize_t _gcount; -#else - /* This is supposedly correct for cfront. */ - _IO_ssize_t _gcount; - void *vptr; - _ios_fields *vb; /* pointer to virtual base class ios */ -#endif - } mine; - _ios_fields base; - char filler[sizeof(struct istream)-sizeof(struct _ios_fields)+PAD]; -}; -struct _fake_ostream { - struct myfields { -#ifndef __GNUC__ - void *vptr; -#endif - _ios_fields *vb; /* pointer to virtual base class ios */ - } mine; - _ios_fields base; - char filler[sizeof(struct ostream)-sizeof(struct _ios_fields)+PAD]; -}; - - -#ifdef _IO_NEW_STREAMS -#define STD_STR(SBUF, TIE, EXTRA_FLAGS) \ - (streambuf*)&SBUF, TIE, 0, ios::skipws|ios::dec|EXTRA_FLAGS, ' ',0,0,6 -#else -#define STD_STR(SBUF, TIE, EXTRA_FLAGS) \ - (streambuf*)&SBUF, TIE, 0, ios::dont_close|ios::dec|ios::skipws|EXTRA_FLAGS, ' ',0,0,6 -#endif - -#ifdef __GNUC__ -#define OSTREAM_DEF(NAME, SBUF, TIE, EXTRA_FLAGS, ASM) \ - _fake_ostream NAME ASM = { {&NAME.base}, {STD_STR(SBUF, TIE, EXTRA_FLAGS) }}; -#define ISTREAM_DEF(NAME, SBUF, TIE, EXTRA_FLAGS) \ - _fake_istream NAME = { {&NAME.base}, {STD_STR(SBUF, TIE, EXTRA_FLAGS) }}; -#else -#define OSTREAM_DEF(NAME, SBUF, TIE, EXTRA_FLAGS) \ - _fake_ostream NAME = { {0, &NAME.base}, {STD_STR(SBUF, TIE, EXTRA_FLAGS) }}; -#define ISTREAM_DEF(NAME, SBUF, TIE, EXTRA_FLAGS) \ - _fake_istream NAME = {{0, 0, &NAME.base}, {STD_STR(SBUF, TIE, EXTRA_FLAGS)}}; -#endif - -OSTREAM_DEF(cout, COUT_SBUF, NULL, 0, ) -OSTREAM_DEF(cerr, CERR_SBUF,(ostream*)&cout, ios::unitbuf, ) -ISTREAM_DEF(cin, CIN_SBUF, (ostream*)&cout, 0) - -/* Only for (partial) compatibility with AT&T's library. */ -#if _G_CLOG_CONFLICT -OSTREAM_DEF(clog, CERR_SBUF, (ostream*)&cout, 0, __asm__ ("__IO_clog")) -#else -OSTREAM_DEF(clog, CERR_SBUF, (ostream*)&cout, 0, ) -#endif - -// Switches between using _IO_std{in,out,err} and __std{in,out,err}_buf -// for standard streams. This does not normally need to be called -// explicitly, but is provided for AT&T compatibility. - -int ios::sync_with_stdio(int new_state) -{ -#ifdef _STDIO_USES_IOSTREAM - // It is always synced. - return 0; -#else - if (new_state == use_stdiobuf) // The usual case now. - return use_stdiobuf; - if (new_state) { - cin.base._strbuf = (streambuf*)&_IO_stdin_buf; - cout.base._strbuf = (streambuf*)&_IO_stdout_buf; - cerr.base._strbuf = (streambuf*)&_IO_stderr_buf; - clog.base._strbuf = (streambuf*)&_IO_stderr_buf; - } else { - cin.base._strbuf = (streambuf*)_IO_stdin; - cout.base._strbuf = (streambuf*)_IO_stdout; - cerr.base._strbuf = (streambuf*)_IO_stderr; - clog.base._strbuf = (streambuf*)_IO_stderr; - } - int old_state = use_stdiobuf; - use_stdiobuf = new_state; - return old_state; -#endif -} |
