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- // This is part of the iostream library, providing -*- C++ -*- input/output.
- // Copyright (C) 1991 Per Bothner.
- //
- // This library is free software; you can redistribute it and/or
- // modify it under the terms of the GNU Library General Public
- // License as published by the Free Software Foundation; either
- // version 2 of the License, 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
- // Library General Public License for more details.
- //
- // You should have received a copy of the GNU Library General Public
- // License along with this library; if not, write to the Free
- // Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- #ifndef __STRSTREAM_H
- #define __STRSTREAM_H
- #ifdef __GNUG__
- #pragma interface
- #endif
- #include "iostream.h"
-
- class strstreambuf : public backupbuf {
- _G_size_t _len; // The current length is max(_len, _pptr-_pbase).
- typedef void *(*_alloc_type)(_G_size_t);
- typedef void (*_free_type)(void*);
- _alloc_type _allocate_buffer;
- _free_type _free_buffer;
- void init_dynamic(_alloc_type alloc, _free_type free,
- int initial_size = 128);
- void init_const() { xsetflags(_S_NO_WRITES); }
- void init_static(char *ptr, int size, char *pstart);
- protected:
- virtual int overflow(int = EOF);
- virtual int underflow();
- virtual int pbackfail(int c);
- public:
- virtual ~strstreambuf();
- strstreambuf() { init_dynamic(0, 0); }
- strstreambuf(int initial_size) { init_dynamic(0, 0, initial_size); }
- strstreambuf(void *(*alloc)(_G_size_t), void (*free)(void*))
- { init_dynamic(alloc, free); }
- strstreambuf(char *ptr, int size, char *pstart = NULL)
- { init_static(ptr, size, pstart); }
- strstreambuf(unsigned char *ptr, int size, unsigned char *pstart = NULL)
- { init_static((char*)ptr, size, (char*)pstart); }
- strstreambuf(const char *ptr, int size)
- { init_static((char*)ptr, size, NULL); init_const(); }
- strstreambuf(const unsigned char *ptr, int size)
- { init_static((char*)ptr, size, NULL); init_const(); }
- #ifndef _G_BROKEN_SIGNED_CHAR
- strstreambuf(signed char *ptr, int size, signed char *pstart = NULL)
- { init_static((char*)ptr, size, (char*)pstart); }
- strstreambuf(const signed char *ptr, int size)
- { init_static((char*)ptr, size, NULL); init_const(); }
- #endif
- int frozen() { return _flags & _S_USER_BUF ? 1 : 0; }
- void freeze(int n=1)
- { if (n) _flags |= _S_USER_BUF; else _flags &= ~_S_USER_BUF; }
- _G_size_t pcount();
- char *str();
- virtual streampos seekoff(streamoff, _seek_dir, int mode=ios::in|ios::out);
- };
-
- class strstreambase : virtual public ios {
- public:
- strstreambuf* rdbuf() { return (strstreambuf*)_strbuf; }
- protected:
- strstreambase() { }
- strstreambase(char *cp, int n, int mode=ios::out);
- };
-
- class istrstream : public strstreambase, public istream {
- public:
- istrstream(const char*, int=0);
- };
-
- class ostrstream : public strstreambase, public ostream {
- public:
- ostrstream();
- ostrstream(char *cp, int n, int mode=ios::out) :strstreambase(cp,n,mode){}
- _G_size_t pcount() { return ((strstreambuf*)_strbuf)->pcount(); }
- char *str() { return ((strstreambuf*)_strbuf)->str(); }
- void freeze(int n = 1) { ((strstreambuf*)_strbuf)->freeze(n); }
- int frozen() { return ((strstreambuf*)_strbuf)->frozen(); }
- };
-
- class strstream : public strstreambase, public iostream {
- public:
- strstream() : strstreambase() { init(new strstreambuf()); }
- strstream(char *cp, int n, int mode=ios::out) :strstreambase(cp,n,mode){}
- _G_size_t pcount() { return ((strstreambuf*)_strbuf)->pcount(); }
- char *str() { return ((strstreambuf*)_strbuf)->str(); }
- void freeze(int n = 1) { ((strstreambuf*)_strbuf)->freeze(n); }
- int frozen() { return ((strstreambuf*)_strbuf)->frozen(); }
- };
-
- #endif /*!__STRSTREAM_H*/
-