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Diffstat (limited to 'contrib/libio/indstream.cc')
-rw-r--r-- | contrib/libio/indstream.cc | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/contrib/libio/indstream.cc b/contrib/libio/indstream.cc deleted file mode 100644 index 15a1bb2778d3..000000000000 --- a/contrib/libio/indstream.cc +++ /dev/null @@ -1,121 +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). */ - -#ifdef __GNUG__ -#pragma implementation -#endif - -#include <indstream.h> - -indirectbuf::indirectbuf(streambuf *get, streambuf *put, int delete_mode) -: streambuf() -{ - _get_stream = get; - _put_stream = put == NULL ? get : put; - _delete_flags = delete_mode; -} - -indirectbuf::~indirectbuf() -{ - if (_delete_flags & ios::in) delete get_stream(); - if (_delete_flags & ios::out) delete put_stream(); -} - -streamsize indirectbuf::xsputn(const char* s, streamsize n) -{ - return put_stream()->sputn(s, n); -} - -streamsize indirectbuf::xsgetn(char* s, streamsize n) -{ - return get_stream()->sgetn(s, n); -} - -int indirectbuf::overflow(int c /* = EOF */) -{ - if (c == EOF) - return put_stream()->overflow(c); - else - return put_stream()->sputc(c); -} - -int indirectbuf::underflow() -{ - return get_stream()->sgetc(); -} - -int indirectbuf::uflow() -{ - return get_stream()->sbumpc(); -} - -streampos indirectbuf::seekoff(streamoff off, _seek_dir dir, int mode) -{ - int ret_val = 0; - int select = mode == 0 ? (ios::in|ios::out) : mode; - streambuf *gbuf = (select & ios::in) ? get_stream() : (streambuf*)NULL; - streambuf *pbuf = (select & ios::out) ? put_stream() : (streambuf*)NULL; - if (gbuf == pbuf) - ret_val = gbuf->seekoff(off, dir, mode); - else { - if (gbuf) - ret_val = gbuf->seekoff(off, dir, ios::in); - if (pbuf && ret_val != EOF) - ret_val = pbuf->seekoff(off, dir, ios::out); - } - return ret_val; -} - -streampos indirectbuf::seekpos(streampos pos, int mode) -{ - int ret_val = EOF; - int select = mode == 0 ? (ios::in|ios::out) : mode; - streambuf *gbuf = (select & ios::in) ? get_stream() : (streambuf*)NULL; - streambuf *pbuf = (select & ios::out) ? put_stream() : (streambuf*)NULL; - if (gbuf == pbuf && gbuf != NULL) - ret_val = gbuf->seekpos(pos, mode); - else { - if (gbuf) - ret_val = gbuf->seekpos(pos, ios::in); - if (pbuf && ret_val != EOF) - ret_val = pbuf->seekpos(pos, ios::out); - } - return ret_val; -} - -int indirectbuf::sync() -{ - streambuf *gbuf = get_stream(); - int get_ret_val = gbuf ? gbuf->sync() : 0; - streambuf *pbuf = put_stream(); - int put_ret_val = (pbuf && pbuf != gbuf) ? pbuf->sync() : 0; - return get_ret_val || put_ret_val; -} - -int indirectbuf::pbackfail(int c) -{ - return get_stream()->sputbackc(c); -} |