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-rw-r--r--contrib/libio/streambuf.h490
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diff --git a/contrib/libio/streambuf.h b/contrib/libio/streambuf.h
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--- a/contrib/libio/streambuf.h
+++ /dev/null
@@ -1,490 +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. */
-
-#ifndef _STREAMBUF_H
-#define _STREAMBUF_H
-#ifdef __GNUG__
-#pragma interface
-#endif
-
-/* #define _G_IO_THROW */ /* Not implemented: ios::failure */
-
-#define _IO_NEW_STREAMS // new optimizated stream representation
-
-extern "C" {
-#include <libio.h>
-}
-//#include <_G_config.h>
-#ifdef _G_NEED_STDARG_H
-#include <stdarg.h>
-#endif
-#ifndef _IO_va_list
-#define _IO_va_list char *
-#endif
-
-#ifndef EOF
-#define EOF (-1)
-#endif
-#ifndef NULL
-#ifdef __GNUG__
-#define NULL (__null)
-#else
-#define NULL (0)
-#endif
-#endif
-
-#ifndef _IO_wchar_t
-#if _G_IO_IO_FILE_VERSION == 0x20001
-#define _IO_wchar_t _G_wchar_t
-#else
-#define _IO_wchar_t short
-#endif
-#endif
-
-extern "C++" {
-class istream; /* Work-around for a g++ name mangling bug. Fixed in 2.6. */
-class ostream; class streambuf;
-
-// In case some header files defines these as macros.
-#undef open
-#undef close
-
-#if defined(_G_IO_IO_FILE_VERSION) && _G_IO_IO_FILE_VERSION == 0x20001
-typedef _IO_off64_t streamoff;
-typedef _IO_off64_t streampos;
-#else
-typedef _IO_off_t streamoff;
-typedef _IO_off_t streampos;
-#endif
-typedef _IO_ssize_t streamsize;
-
-typedef unsigned long __fmtflags;
-typedef unsigned char __iostate;
-
-struct _ios_fields
-{ // The data members of an ios.
- streambuf *_strbuf;
- ostream* _tie;
- int _width;
- __fmtflags _flags;
- _IO_wchar_t _fill;
- __iostate _state;
- __iostate _exceptions;
- int _precision;
-
- void *_arrays; /* Support for ios::iword and ios::pword. */
-};
-
-#define _IOS_GOOD 0
-#define _IOS_EOF 1
-#define _IOS_FAIL 2
-#define _IOS_BAD 4
-
-#define _IO_INPUT 1
-#define _IO_OUTPUT 2
-#define _IO_ATEND 4
-#define _IO_APPEND 8
-#define _IO_TRUNC 16
-#define _IO_NOCREATE 32
-#define _IO_NOREPLACE 64
-#define _IO_BIN 128
-
-#ifdef _STREAM_COMPAT
-enum state_value {
- _good = _IOS_GOOD,
- _eof = _IOS_EOF,
- _fail = _IOS_FAIL,
- _bad = _IOS_BAD };
-enum open_mode {
- input = _IO_INPUT,
- output = _IO_OUTPUT,
- atend = _IO_ATEND,
- append = _IO_APPEND };
-#endif
-
-class ios : public _ios_fields {
- ios& operator=(ios&); /* Not allowed! */
- ios (const ios&); /* Not allowed! */
- public:
- typedef __fmtflags fmtflags;
- typedef int iostate;
- typedef int openmode;
- typedef _IO_ssize_t streamsize;
- enum io_state {
- goodbit = _IOS_GOOD,
- eofbit = _IOS_EOF,
- failbit = _IOS_FAIL,
- badbit = _IOS_BAD };
- enum open_mode {
- in = _IO_INPUT,
- out = _IO_OUTPUT,
- ate = _IO_ATEND,
- app = _IO_APPEND,
- trunc = _IO_TRUNC,
- nocreate = _IO_NOCREATE,
- noreplace = _IO_NOREPLACE,
- bin = _IOS_BIN, // Deprecated - ANSI uses ios::binary.
- binary = _IOS_BIN };
- enum seek_dir { beg, cur, end};
- typedef enum seek_dir seekdir;
- // NOTE: If adding flags here, before to update ios::bitalloc().
- enum { skipws=_IO_SKIPWS,
- left=_IO_LEFT, right=_IO_RIGHT, internal=_IO_INTERNAL,
- dec=_IO_DEC, oct=_IO_OCT, hex=_IO_HEX,
- showbase=_IO_SHOWBASE, showpoint=_IO_SHOWPOINT,
- uppercase=_IO_UPPERCASE, showpos=_IO_SHOWPOS,
- scientific=_IO_SCIENTIFIC, fixed=_IO_FIXED,
- unitbuf=_IO_UNITBUF, stdio=_IO_STDIO
-#ifndef _IO_NEW_STREAMS
- , dont_close=_IO_DONT_CLOSE // Don't delete streambuf on stream destruction
-#endif
- };
- enum { // Masks.
- basefield=dec+oct+hex,
- floatfield = scientific+fixed,
- adjustfield = left+right+internal
- };
-
-#ifdef _IO_THROW
- class failure : public xmsg {
- ios* _stream;
- public:
- failure(ios* stream) { _stream = stream; }
- failure(string cause, ios* stream) { _stream = stream; }
- ios* rdios() const { return _stream; }
- };
-#endif
-
- ostream* tie() const { return _tie; }
- ostream* tie(ostream* val) { ostream* save=_tie; _tie=val; return save; }
-
- // Methods to change the format state.
- _IO_wchar_t fill() const { return _fill; }
- _IO_wchar_t fill(_IO_wchar_t newf)
- {_IO_wchar_t oldf = _fill; _fill = newf; return oldf;}
- fmtflags flags() const { return _flags; }
- fmtflags flags(fmtflags new_val) {
- fmtflags old_val = _flags; _flags = new_val; return old_val; }
- int precision() const { return _precision; }
- int precision(int newp) {
- unsigned short oldp = _precision; _precision = (unsigned short)newp;
- return oldp; }
- fmtflags setf(fmtflags val) {
- fmtflags oldbits = _flags;
- _flags |= val; return oldbits; }
- fmtflags setf(fmtflags val, fmtflags mask) {
- fmtflags oldbits = _flags;
- _flags = (_flags & ~mask) | (val & mask); return oldbits; }
- fmtflags unsetf(fmtflags mask) {
- fmtflags oldbits = _flags;
- _flags &= ~mask; return oldbits; }
- int width() const { return _width; }
- int width(int val) { int save = _width; _width = val; return save; }
-
-#ifdef _IO_THROW
- void _throw_failure() const { throw new ios::failure(this); }
-#else
- void _throw_failure() const { }
-#endif
- void clear(iostate state = 0) {
- _state = _strbuf ? state : state|badbit;
- if (_state & _exceptions) _throw_failure(); }
- void set(iostate flag) { _state |= flag;
- if (_state & _exceptions) _throw_failure(); }
- void setstate(iostate flag) { _state |= flag; // ANSI
- if (_state & _exceptions) _throw_failure(); }
- int good() const { return _state == 0; }
- int eof() const { return _state & ios::eofbit; }
- int fail() const { return _state & (ios::badbit|ios::failbit); }
- int bad() const { return _state & ios::badbit; }
- iostate rdstate() const { return _state; }
- operator void*() const { return fail() ? (void*)0 : (void*)(-1); }
- int operator!() const { return fail(); }
- iostate exceptions() const { return _exceptions; }
- void exceptions(iostate enable) {
- _exceptions = enable;
- if (_state & _exceptions) _throw_failure(); }
-
- streambuf* rdbuf() const { return _strbuf; }
- streambuf* rdbuf(streambuf *_s) {
- streambuf *_old = _strbuf; _strbuf = _s; clear (); return _old; }
-
- static int sync_with_stdio(int on);
- static void sync_with_stdio() { sync_with_stdio(1); }
- static fmtflags bitalloc();
- static int xalloc();
- void*& pword(int);
- void* pword(int) const;
- long& iword(int);
- long iword(int) const;
-
-#ifdef _STREAM_COMPAT
- void unset(state_value flag) { _state &= ~flag; }
- void close();
- int is_open();
- int readable();
- int writable();
-#endif
-
- // Used to initialize standard streams. Not needed in this implementation.
- class Init {
- public:
- Init () { }
- };
-
- protected:
- inline ios(streambuf* sb = 0, ostream* tie_to = 0);
- inline virtual ~ios();
- inline void init(streambuf* sb, ostream* tie = 0);
-};
-
-#if __GNUG__==1
-typedef int _seek_dir;
-#else
-typedef ios::seek_dir _seek_dir;
-#endif
-
-// Magic numbers and bits for the _flags field.
-// The magic numbers use the high-order bits of _flags;
-// the remaining bits are abailable for variable flags.
-// Note: The magic numbers must all be negative if stdio
-// emulation is desired.
-
-// A streammarker remembers a position in a buffer.
-// You are guaranteed to be able to seek back to it if it is saving().
-class streammarker : private _IO_marker {
- friend class streambuf;
- void set_offset(int offset) { _pos = offset; }
- public:
- streammarker(streambuf *sb);
- ~streammarker();
- int saving() { return 1; }
- int delta(streammarker&);
- int delta();
-};
-
-struct streambuf : public _IO_FILE { // protected??
- friend class ios;
- friend class istream;
- friend class ostream;
- friend class streammarker;
- const void *&_vtable() { return *(const void**)((_IO_FILE*)this + 1); }
- protected:
- static streambuf* _list_all; /* List of open streambufs. */
- _IO_FILE*& xchain() { return _chain; }
- void _un_link();
- void _link_in();
- char* gptr() const
- { return _IO_file_flags & _IO_IN_BACKUP ? _IO_save_base : _IO_read_ptr; }
- char* pptr() const { return _IO_write_ptr; }
- char* egptr() const
- { return _IO_file_flags & _IO_IN_BACKUP ? _IO_save_end : _IO_read_end; }
- char* epptr() const { return _IO_write_end; }
- char* pbase() const { return _IO_write_base; }
- char* eback() const
- { return _IO_file_flags & _IO_IN_BACKUP ? _IO_save_base : _IO_read_base;}
- char* base() const { return _IO_buf_base; }
- char* ebuf() const { return _IO_buf_end; }
- int blen() const { return _IO_buf_end - _IO_buf_base; }
- void xput_char(char c) { *_IO_write_ptr++ = c; }
- int xflags() { return _IO_file_flags; }
- int xflags(int f) {int fl = _IO_file_flags; _IO_file_flags = f; return fl;}
- void xsetflags(int f) { _IO_file_flags |= f; }
- void xsetflags(int f, int mask)
- { _IO_file_flags = (_IO_file_flags & ~mask) | (f & mask); }
- void gbump(int n)
- { _IO_file_flags & _IO_IN_BACKUP ? (_IO_save_base+=n):(_IO_read_ptr+=n);}
- void pbump(int n) { _IO_write_ptr += n; }
- void setb(char* b, char* eb, int a=0);
- void setp(char* p, char* ep)
- { _IO_write_base=_IO_write_ptr=p; _IO_write_end=ep; }
- void setg(char* eb, char* g, char *eg) {
- if (_IO_file_flags & _IO_IN_BACKUP) _IO_free_backup_area(this);
- _IO_read_base = eb; _IO_read_ptr = g; _IO_read_end = eg; }
- char *shortbuf() { return _shortbuf; }
-
- int in_backup() { return _flags & _IO_IN_BACKUP; }
- // The start of the main get area: FIXME: wrong for write-mode filebuf?
- char *Gbase() { return in_backup() ? _IO_save_base : _IO_read_base; }
- // The end of the main get area:
- char *eGptr() { return in_backup() ? _IO_save_end : _IO_read_end; }
- // The start of the backup area:
- char *Bbase() { return in_backup() ? _IO_read_base : _IO_save_base; }
- char *Bptr() { return _IO_backup_base; }
- // The end of the backup area:
- char *eBptr() { return in_backup() ? _IO_read_end : _IO_save_end; }
- char *Nbase() { return _IO_save_base; }
- char *eNptr() { return _IO_save_end; }
- int have_backup() { return _IO_save_base != NULL; }
- int have_markers() { return _markers != NULL; }
- void free_backup_area();
- void unsave_markers(); // Make all streammarkers !saving().
- int put_mode() { return _flags & _IO_CURRENTLY_PUTTING; }
- int switch_to_get_mode();
-
- streambuf(int flags=0);
- public:
- static int flush_all();
- static void flush_all_linebuffered(); // Flush all line buffered files.
- virtual ~streambuf();
- virtual int overflow(int c = EOF); // Leave public for now
- virtual int underflow(); // Leave public for now
- virtual int uflow(); // Leave public for now
- virtual int pbackfail(int c);
-// virtual int showmany ();
- virtual streamsize xsputn(const char* s, streamsize n);
- virtual streamsize xsgetn(char* s, streamsize n);
- virtual streampos seekoff(streamoff, _seek_dir, int mode=ios::in|ios::out);
- virtual streampos seekpos(streampos pos, int mode = ios::in|ios::out);
-
- streampos pubseekoff(streamoff o, _seek_dir d, int mode=ios::in|ios::out)
- { return _IO_seekoff (this, o, d, mode); }
- streampos pubseekpos(streampos pos, int mode = ios::in|ios::out)
- { return _IO_seekpos (this, pos, mode); }
- streampos sseekoff(streamoff, _seek_dir, int mode=ios::in|ios::out);
- streampos sseekpos(streampos pos, int mode = ios::in|ios::out);
- virtual streambuf* setbuf(char* p, int len);
- virtual int sync();
- virtual int doallocate();
-
- int seekmark(streammarker& mark, int delta = 0);
- int sputbackc(char c);
- int sungetc();
- int unbuffered() { return _flags & _IO_UNBUFFERED ? 1 : 0; }
- int linebuffered() { return _flags & _IO_LINE_BUF ? 1 : 0; }
- void unbuffered(int i)
- { if (i) _flags |= _IO_UNBUFFERED; else _flags &= ~_IO_UNBUFFERED; }
- void linebuffered(int i)
- { if (i) _flags |= _IO_LINE_BUF; else _flags &= ~_IO_LINE_BUF; }
- int allocate() { // For AT&T compatibility
- if (base() || unbuffered()) return 0;
- else return doallocate(); }
- // Allocate a buffer if needed; use _shortbuf if appropriate.
- void allocbuf() { if (base() == NULL) doallocbuf(); }
- void doallocbuf();
- int in_avail() { return _IO_read_end - _IO_read_ptr; }
- int out_waiting() { return _IO_write_ptr - _IO_write_base; }
- streamsize sputn(const char* s, streamsize n) { return xsputn(s, n); }
- streamsize padn(char pad, streamsize n) { return _IO_padn(this, pad, n); }
- streamsize sgetn(char* s, streamsize n) { return _IO_sgetn(this, s, n); }
- int ignore(int);
- int get_column();
- int set_column(int);
- long sgetline(char* buf, _IO_size_t n, char delim, int putback_delim);
- int sputc(int c) { return _IO_putc(c, this); }
- int sbumpc() { return _IO_getc(this); }
- int sgetc() { return _IO_peekc(this); }
- int snextc() {
- if (_IO_read_ptr >= _IO_read_end && __underflow(this) == EOF)
- return EOF;
- else return _IO_read_ptr++, sgetc(); }
- void stossc() { if (_IO_read_ptr < _IO_read_end) _IO_read_ptr++; }
- int vscan(char const *fmt0, _IO_va_list ap, ios* stream = NULL);
- int scan(char const *fmt0 ...);
- int vform(char const *fmt0, _IO_va_list ap);
- int form(char const *fmt0 ...);
-#if 0 /* Work in progress */
- int column(); // Current column number (of put pointer). -1 is unknown.
- void column(int c); // Set column number of put pointer to c.
-#endif
- virtual streamsize sys_read(char* buf, streamsize size);
- virtual streamsize sys_write(const char*, streamsize);
- virtual streampos sys_seek(streamoff, _seek_dir);
- virtual int sys_close();
- virtual int sys_stat(void*); // Actually, a (struct stat*)
-#if _G_IO_IO_FILE_VERSION == 0x20001
- virtual int showmanyc();
- virtual void imbue(void *);
-#endif
-};
-
-// A backupbuf is a streambuf with full backup and savepoints on reading.
-// All standard streambufs in the GNU iostream library are backupbufs.
-
-class filebuf : public streambuf {
- protected:
- void init();
- public:
- static const int openprot; // Non-ANSI AT&T-ism: Default open protection.
- filebuf();
- filebuf(int fd);
- filebuf(int fd, char* p, int len);
-#if !_IO_UNIFIED_JUMPTABLES
- static filebuf *__new();
-#endif
- ~filebuf();
- filebuf* attach(int fd);
- filebuf* open(const char *filename, const char *mode);
- filebuf* open(const char *filename, ios::openmode mode, int prot = 0664);
- virtual int underflow();
- virtual int overflow(int c = EOF);
- int is_open() const { return _fileno >= 0; }
- int fd() const { return is_open() ? _fileno : EOF; }
- filebuf* close();
- virtual int doallocate();
- virtual streampos seekoff(streamoff, _seek_dir, int mode=ios::in|ios::out);
- virtual streambuf* setbuf(char* p, int len);
- streamsize xsputn(const char* s, streamsize n);
- streamsize xsgetn(char* s, streamsize n);
- virtual int sync();
- protected: // See documentation in filebuf.C.
-// virtual int pbackfail(int c);
- int is_reading() { return eback() != egptr(); }
- char* cur_ptr() { return is_reading() ? gptr() : pptr(); }
- /* System's idea of pointer */
- char* file_ptr() { return eGptr(); }
- // Low-level operations (Usually invoke system calls.)
- virtual streamsize sys_read(char* buf, streamsize size);
- virtual streampos sys_seek(streamoff, _seek_dir);
- virtual streamsize sys_write(const char*, streamsize);
- virtual int sys_stat(void*); // Actually, a (struct stat*)
- virtual int sys_close();
-#if 0
- virtual uflow;
- virtual showmany;
-#endif
-};
-
-inline void ios::init(streambuf* sb, ostream* tie_to) {
- _state = sb ? ios::goodbit : ios::badbit; _exceptions=0;
- _strbuf=sb; _tie = tie_to; _width=0; _fill=' ';
-#ifdef _IO_NEW_STREAMS
- _flags=ios::skipws|ios::dec;
-#else
- _flags=ios::skipws|ios::dec|ios::dont_close;
-#endif
- _precision=6; _arrays = 0; }
-
-inline ios::ios(streambuf* sb, ostream* tie_to) { init(sb, tie_to); }
-
-inline ios::~ios() {
-#ifndef _IO_NEW_STREAMS
- if (!(_flags & (unsigned int)ios::dont_close)) delete rdbuf();
-#endif
- // It is safe to use naked operator delete[] as we know elements have no
- // dtor, and g++ does not add a new[] cookie for such cases.
- operator delete[] (_arrays);
-}
-} // extern "C++"
-#endif /* _STREAMBUF_H */
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