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Diffstat (limited to 'libio/libio.h')
| -rw-r--r-- | libio/libio.h | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/libio/libio.h b/libio/libio.h new file mode 100644 index 0000000..405036d --- /dev/null +++ b/libio/libio.h @@ -0,0 +1,272 @@ +/* +Copyright (C) 1991, 1992, 1993, 1994, 1995 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. */ + +/* This is part of the iostream library. Written by Per Bothner. */ + +#ifndef _IO_STDIO_H +#define _IO_STDIO_H + +#include <_G_config.h> +#define _IO_pos_t _G_fpos_t /* obsolete */ +#define _IO_fpos_t _G_fpos_t +#define _IO_size_t _G_size_t +#define _IO_ssize_t _G_ssize_t +#define _IO_off_t _G_off_t +#define _IO_pid_t _G_pid_t +#define _IO_uid_t _G_uid_t +#define _IO_HAVE_SYS_WAIT _G_HAVE_SYS_WAIT +#define _IO_HAVE_ST_BLKSIZE _G_HAVE_ST_BLKSIZE +#define _IO_BUFSIZ _G_BUFSIZ +#define _IO_va_list _G_va_list + +#ifdef _G_NEED_STDARG_H +/* This define avoids name pollution if we're using GNU stdarg.h */ +#define __need___va_list +#include <stdarg.h> +#ifdef __GNUC_VA_LIST +#undef _IO_va_list +#define _IO_va_list __gnuc_va_list +#endif /* __GNUC_VA_LIST */ +#endif + +#ifndef __P +#ifdef __STDC__ +#define __P(protos) protos +#else +#define __P(protos) () +#endif +#endif /*!__P*/ + +/* For backward compatibility */ +#ifndef _PARAMS +#define _PARAMS(protos) __P(protos) +#endif /*!_PARAMS*/ + +#ifndef __STDC__ +#define const +#endif +#define _IO_UNIFIED_JUMPTABLES 1 + +#if 0 +#ifdef _IO_NEED_STDARG_H +#include <stdarg.h> +#endif +#endif + +#ifndef EOF +#define EOF (-1) +#endif +#ifndef NULL +#if !defined(__cplusplus) || defined(__GNUC__) +#define NULL ((void*)0) +#else +#define NULL (0) +#endif +#endif + +#define _IOS_INPUT 1 +#define _IOS_OUTPUT 2 +#define _IOS_ATEND 4 +#define _IOS_APPEND 8 +#define _IOS_TRUNC 16 +#define _IOS_NOCREATE 32 +#define _IOS_NOREPLACE 64 +#define _IOS_BIN 128 + +/* 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. */ + +#define _IO_MAGIC 0xFBAD0000 /* Magic number */ +#define _OLD_STDIO_MAGIC 0xFABC0000 /* Emulate old stdio. */ +#define _IO_MAGIC_MASK 0xFFFF0000 +#define _IO_USER_BUF 1 /* User owns buffer; don't delete it on close. */ +#define _IO_UNBUFFERED 2 +#define _IO_NO_READS 4 /* Reading not allowed */ +#define _IO_NO_WRITES 8 /* Writing not allowd */ +#define _IO_EOF_SEEN 0x10 +#define _IO_ERR_SEEN 0x20 +#define _IO_DELETE_DONT_CLOSE 0x40 /* Don't call close(_fileno) on cleanup. */ +#define _IO_LINKED 0x80 /* Set if linked (using _chain) to streambuf::_list_all.*/ +#define _IO_IN_BACKUP 0x100 +#define _IO_LINE_BUF 0x200 +#define _IO_TIED_PUT_GET 0x400 /* Set if put and get pointer logicly tied. */ +#define _IO_CURRENTLY_PUTTING 0x800 +#define _IO_IS_APPENDING 0x1000 +#define _IO_IS_FILEBUF 0x2000 + +/* These are "formatting flags" matching the iostream fmtflags enum values. */ +#define _IO_SKIPWS 01 +#define _IO_LEFT 02 +#define _IO_RIGHT 04 +#define _IO_INTERNAL 010 +#define _IO_DEC 020 +#define _IO_OCT 040 +#define _IO_HEX 0100 +#define _IO_SHOWBASE 0200 +#define _IO_SHOWPOINT 0400 +#define _IO_UPPERCASE 01000 +#define _IO_SHOWPOS 02000 +#define _IO_SCIENTIFIC 04000 +#define _IO_FIXED 010000 +#define _IO_UNITBUF 020000 +#define _IO_STDIO 040000 +#define _IO_DONT_CLOSE 0100000 + + +struct _IO_jump_t; struct _IO_FILE; + +/* Define the user-visible type, with user-friendly member names. */ +typedef struct +{ + _IO_ssize_t (*read) __P ((struct _IO_FILE *, void *, _IO_ssize_t)); + _IO_ssize_t (*write) __P ((struct _IO_FILE *, const void *, _IO_ssize_t)); + _IO_fpos_t (*seek) __P ((struct _IO_FILE *, _IO_off_t, int)); + int (*close) __P ((struct _IO_FILE *)); +} _IO_cookie_io_functions_t; + + +/* The reentrant version of the libio implementation needs a semaphore for + each _IO_FILE struture. Because we don't know how the semaphore + will be implemented we try to be very general. */ +struct _IO_lock_t { + void *ptr; + short int field1; + short int field2; +}; + +/* A streammarker remembers a position in a buffer. */ + +struct _IO_marker { + struct _IO_marker *_next; + struct _IO_FILE *_sbuf; + /* If _pos >= 0 + it points to _buf->Gbase()+_pos. FIXME comment */ + /* if _pos < 0, it points to _buf->eBptr()+_pos. FIXME comment */ + int _pos; +#if 0 + void set_streampos(streampos sp) { _spos = sp; } + void set_offset(int offset) { _pos = offset; _spos = (streampos)(-2); } + public: + streammarker(streambuf *sb); + ~streammarker(); + int saving() { return _spos == -2; } + int delta(streammarker&); + int delta(); +#endif +}; + +struct _IO_FILE { + int _flags; /* High-order word is _IO_MAGIC; rest is flags. */ +#define _IO_file_flags _flags + + /* The following pointers correspond to the C++ streambuf protocol. */ + char* _IO_read_ptr; /* Current read pointer */ + char* _IO_read_end; /* End of get area. */ + char* _IO_read_base; /* Start of putback+get area. */ + char* _IO_write_base; /* Start of put area. */ + char* _IO_write_ptr; /* Current put pointer. */ + char* _IO_write_end; /* End of put area. */ + char* _IO_buf_base; /* Start of reserve area. */ + char* _IO_buf_end; /* End of reserve area. */ + /* The following fields are used to support backing up and undo. */ + char *_IO_save_base; /* Pointer to start of non-current get area. */ + char *_IO_backup_base; /* Pointer to first valid character of backup area */ + char *_IO_save_end; /* Pointer to end of non-current get area. */ + + struct _IO_marker *_markers; + + struct _IO_FILE *_chain; + +#if !_IO_UNIFIED_JUMPTABLES + struct _IO_jump_t *_jumps; /* Jump table */ +#endif + + int _fileno; + int _blksize; + _IO_off_t _offset; + +#define __HAVE_COLUMN /* temporary */ + /* 1+column number of pbase(); 0 is unknown. */ + unsigned short _cur_column; + char _unused; + char _shortbuf[1]; + + /* char* _save_gptr; char* _save_egptr; */ + + struct _IO_lock_t _IO_lock; +}; + +#ifndef __cplusplus +typedef struct _IO_FILE _IO_FILE; +#endif + +struct _IO_FILE_plus; +extern struct _IO_FILE_plus _IO_stdin_, _IO_stdout_, _IO_stderr_; +#define _IO_stdin ((_IO_FILE*)(&_IO_stdin_)) +#define _IO_stdout ((_IO_FILE*)(&_IO_stdout_)) +#define _IO_stderr ((_IO_FILE*)(&_IO_stderr_)) + +#ifdef __cplusplus +extern "C" { +#endif + +extern int __underflow __P((_IO_FILE*)); +extern int __uflow __P((_IO_FILE*)); +extern int __overflow __P((_IO_FILE*, int)); + +#define _IO_getc(_fp) \ + ((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end ? __uflow(_fp) \ + : *(unsigned char*)(_fp)->_IO_read_ptr++) +#define _IO_peekc(_fp) \ + ((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end \ + && __underflow(_fp) == EOF ? EOF \ + : *(unsigned char*)(_fp)->_IO_read_ptr) + +#define _IO_putc(_ch, _fp) \ + (((_fp)->_IO_write_ptr >= (_fp)->_IO_write_end) \ + ? __overflow(_fp, (unsigned char)(_ch)) \ + : (unsigned char)(*(_fp)->_IO_write_ptr++ = (_ch))) + +#define _IO_feof(__fp) (((__fp)->_flags & _IO_EOF_SEEN) != 0) +#define _IO_ferror(__fp) (((__fp)->_flags & _IO_ERR_SEEN) != 0) + +/* This one is for Emacs. */ +#define _IO_PENDING_OUTPUT_COUNT(_fp) \ + ((_fp)->_IO_write_ptr - (_fp)->_IO_write_base) + +extern int _IO_vfscanf __P((_IO_FILE*, const char*, _IO_va_list, int*)); +extern int _IO_vfprintf __P((_IO_FILE*, const char*, _IO_va_list)); +extern _IO_ssize_t _IO_padn __P((_IO_FILE *, int, _IO_ssize_t)); +extern _IO_size_t _IO_sgetn __P((_IO_FILE *, void*, _IO_size_t)); + +extern void _IO_free_backup_area __P((_IO_FILE*)); + +#ifdef __cplusplus +} +#endif + +#endif /* _IO_STDIO_H */ |