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114 lines
4.2 KiB
C++
114 lines
4.2 KiB
C++
/* This is part of libio/iostream, providing -*- C++ -*- input/output.
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Copyright (C) 1993 Free Software Foundation
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This file is part of the GNU IO Library. This library is free
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software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option)
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any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this library; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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As a special exception, if you link this library with files
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compiled with a GNU compiler to produce an executable, this does not cause
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the resulting executable to be covered by the GNU General Public License.
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This exception does not however invalidate any other reasons why
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the executable file might be covered by the GNU General Public License. */
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/* Written by Per Bothner (bothner@cygnus.com). */
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#ifndef __STRSTREAM_H
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#define __STRSTREAM_H
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#ifdef __GNUG__
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#pragma interface
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#endif
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#include <iostream.h>
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#include <strfile.h>
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extern "C++" {
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class strstreambuf : public streambuf
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{
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struct _IO_str_fields _s;
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friend class istrstream;
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void init_dynamic(_IO_alloc_type alloc, _IO_free_type free,
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int initial_size = 0);
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void init_static(char *ptr, int size, char *pstart);
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void init_readonly(const char *ptr, int size);
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protected:
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virtual int overflow(int = EOF);
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virtual int underflow();
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virtual int pbackfail(int c);
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public:
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virtual ~strstreambuf();
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strstreambuf() { init_dynamic(0, 0); }
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strstreambuf(int initial_size) { init_dynamic(0, 0, initial_size); }
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strstreambuf(void *(*alloc)(_IO_size_t), void (*free)(void*))
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{ init_dynamic(alloc, free); }
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strstreambuf(char *ptr, int size, char *pstart = NULL)
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{ init_static(ptr, size, pstart); }
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strstreambuf(unsigned char *ptr, int size, unsigned char *pstart = NULL)
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{ init_static((char*)ptr, size, (char*)pstart); }
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strstreambuf(const char *ptr, int size)
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{ init_readonly(ptr, size); }
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strstreambuf(const unsigned char *ptr, int size)
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{ init_readonly((const char*)ptr, size); }
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strstreambuf(signed char *ptr, int size, signed char *pstart = NULL)
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{ init_static((char*)ptr, size, (char*)pstart); }
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strstreambuf(const signed char *ptr, int size)
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{ init_readonly((const char*)ptr, size); }
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// Note: frozen() is always true if !_IO_STR_DYNAMIC(this).
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int frozen() { return _flags & _IO_USER_BUF ? 1 : 0; }
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void freeze(int n=1)
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{ if (_IO_STR_DYNAMIC(this))
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{ if (n) _flags |= _IO_USER_BUF; else _flags &= ~_IO_USER_BUF; } }
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_IO_ssize_t pcount();
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char *str();
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virtual streampos seekoff(streamoff, _seek_dir, int mode=ios::in|ios::out);
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};
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class strstreambase : virtual public ios {
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protected:
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strstreambuf __my_sb;
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public:
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strstreambuf* rdbuf() { return &__my_sb; }
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protected:
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strstreambase() { init (&__my_sb); }
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strstreambase(char *cp, int n, int mode=ios::out);
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};
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class istrstream : public strstreambase, public istream {
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public:
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istrstream(const char*, int=0);
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};
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class ostrstream : public strstreambase, public ostream {
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public:
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ostrstream() { }
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ostrstream(char *cp, int n, int mode=ios::out) :strstreambase(cp,n,mode){}
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_IO_ssize_t pcount() { return ((strstreambuf*)_strbuf)->pcount(); }
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char *str() { return ((strstreambuf*)_strbuf)->str(); }
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void freeze(int n = 1) { ((strstreambuf*)_strbuf)->freeze(n); }
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int frozen() { return ((strstreambuf*)_strbuf)->frozen(); }
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};
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class strstream : public strstreambase, public iostream {
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public:
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strstream() { }
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strstream(char *cp, int n, int mode=ios::out) :strstreambase(cp,n,mode){}
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_IO_ssize_t pcount() { return ((strstreambuf*)_strbuf)->pcount(); }
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char *str() { return ((strstreambuf*)_strbuf)->str(); }
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void freeze(int n = 1) { ((strstreambuf*)_strbuf)->freeze(n); }
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int frozen() { return ((strstreambuf*)_strbuf)->frozen(); }
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};
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} // extern "C++"
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#endif /*!__STRSTREAM_H*/
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