1/* Copyright (C) 1991,92,93,94,95,97,98,99,2000,2001 Free Software Foundation, Inc. 2 This file is part of the GNU IO Library. 3 Written by Per Bothner <bothner@cygnus.com>. 4 5 This library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU General Public License as 7 published by the Free Software Foundation; either version 2, or (at 8 your option) any later version. 9 10 This library is distributed in the hope that it will be useful, but 11 WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this library; see the file COPYING. If not, write to 17 the Free Software Foundation, 59 Temple Place - Suite 330, Boston, 18 MA 02111-1307, USA. 19 20 As a special exception, if you link this library with files 21 compiled with a GNU compiler to produce an executable, this does 22 not cause the resulting executable to be covered by the GNU General 23 Public License. This exception does not however invalidate any 24 other reasons why the executable file might be covered by the GNU 25 General Public License. 26*/ 27#ifndef _IO_STDIO_H_ 28#define _IO_STDIO_H_ 29 30#include <sys/types.h> 31#include <stdarg.h> 32 33#ifndef EOF 34# define EOF (-1) 35#endif 36 37#define _IO_pos_t off_t /* obsolete */ 38#define _IO_fpos_t off_t 39#define _IO_fpos64_t off_t 40#define _IO_size_t size_t 41#define _IO_ssize_t ssize_t 42#define _IO_off_t off_t 43#define _IO_off64_t off_t 44#define _IO_pid_t pid_t 45#define _IO_uid_t uid_t 46#define _IO_HAVE_SYS_WAIT _G_HAVE_SYS_WAIT 47#define _IO_HAVE_ST_BLKSIZE _G_HAVE_ST_BLKSIZE 48#define _IO_BUFSIZ BUFSIZ 49#define _IO_va_list va_list 50 51#define _IOS_INPUT 1 52#define _IOS_OUTPUT 2 53#define _IOS_ATEND 4 54#define _IOS_APPEND 8 55#define _IOS_TRUNC 16 56#define _IOS_NOCREATE 32 57#define _IOS_NOREPLACE 64 58#define _IOS_BIN 128 59 60/* Magic numbers and bits for the _flags field. 61 The magic numbers use the high-order bits of _flags; 62 the remaining bits are available for variable flags. 63 Note: The magic numbers must all be negative if stdio 64 emulation is desired. */ 65 66#define _IO_MAGIC 0xFBAD0000 /* Magic number */ 67#define _OLD_STDIO_MAGIC 0xFABC0000 /* Emulate old stdio. */ 68#define _IO_MAGIC_MASK 0xFFFF0000 69#define _IO_USER_BUF 1 /* User owns buffer; don't delete it on close. */ 70#define _IO_UNBUFFERED 2 71#define _IO_NO_READS 4 /* Reading not allowed */ 72#define _IO_NO_WRITES 8 /* Writing not allowd */ 73#define _IO_EOF_SEEN 0x10 74#define _IO_ERR_SEEN 0x20 75#define _IO_DELETE_DONT_CLOSE 0x40 /* Don't call close(_fileno) on cleanup. */ 76#define _IO_LINKED 0x80 /* Set if linked (using _chain) to streambuf::_list_all.*/ 77#define _IO_IN_BACKUP 0x100 78#define _IO_LINE_BUF 0x200 79#define _IO_TIED_PUT_GET 0x400 /* Set if put and get pointer logicly tied. */ 80#define _IO_CURRENTLY_PUTTING 0x800 81#define _IO_IS_APPENDING 0x1000 82#define _IO_IS_FILEBUF 0x2000 83#define _IO_BAD_SEEN 0x4000 84 85/* These are "formatting flags" matching the iostream fmtflags enum values. */ 86#define _IO_SKIPWS 01 87#define _IO_LEFT 02 88#define _IO_RIGHT 04 89#define _IO_INTERNAL 010 90#define _IO_DEC 020 91#define _IO_OCT 040 92#define _IO_HEX 0100 93#define _IO_SHOWBASE 0200 94#define _IO_SHOWPOINT 0400 95#define _IO_UPPERCASE 01000 96#define _IO_SHOWPOS 02000 97#define _IO_SCIENTIFIC 04000 98#define _IO_FIXED 010000 99#define _IO_UNITBUF 020000 100#define _IO_STDIO 040000 101#define _IO_DONT_CLOSE 0100000 102#define _IO_BOOLALPHA 0200000 103 104 105struct _IO_marker; 106struct _IO_codecvt; 107struct _IO_wide_data; 108typedef void _IO_lock_t; 109 110 111struct _IO_marker { 112 struct _IO_marker *_next; 113 struct _IO_FILE *_sbuf; 114 int _pos; 115}; 116 117typedef struct _IO_FILE { 118 int _flags; /* High-order word is _IO_MAGIC; rest is flags. */ 119# define _IO_file_flags _flags 120 121 /* The following pointers correspond to the C++ streambuf protocol. */ 122 /* Note: Tk uses the _IO_read_ptr and _IO_read_end fields directly. */ 123 char *_IO_read_ptr; /* Current read pointer */ 124 char *_IO_read_end; /* End of get area. */ 125 char *_IO_read_base; /* Start of putback+get area. */ 126 char *_IO_write_base; /* Start of put area. */ 127 char *_IO_write_ptr; /* Current put pointer. */ 128 char *_IO_write_end; /* End of put area. */ 129 char *_IO_buf_base; /* Start of reserve area. */ 130 char *_IO_buf_end; /* End of reserve area. */ 131 /* The following fields are used to support backing up and undo. */ 132 char *_IO_save_base; /* Pointer to start of non-current get area. */ 133 char *_IO_backup_base; /* Pointer to first valid character of backup area */ 134 char *_IO_save_end; /* Pointer to end of non-current get area. */ 135 136 struct _IO_marker *_markers; 137 138 struct _IO_FILE *_chain; 139 140 int _fileno; 141/* int _blksize; */ 142 int _flags2; 143 off_t _old_offset; /* This used to be _offset but it's too small. */ 144 /* -> not true on BeOS, but who cares */ 145 146 /* 1+column number of pbase(); 0 is unknown. */ 147 unsigned short _cur_column; 148 signed char _vtable_offset; 149 char _shortbuf[1]; 150 151 _IO_lock_t *_lock; 152 153 off_t _offset; 154/* #if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T */ 155 /* Wide character stream stuff. */ 156 struct _IO_codecvt *_codecvt; 157 struct _IO_wide_data *_wide_data; 158/* #else 159 * void *__pad1; 160 * void *__pad2; 161 * #endif */ 162 int _mode; 163 /* Make sure we don't get into trouble again. */ 164 char _unused2[15 * sizeof (int) - 2 * sizeof (void *)]; 165} _IO_FILE; 166 167 168#ifdef __cplusplus 169extern "C" { 170#endif 171 172extern int _IO_feof(_IO_FILE *stream); 173#define _IO_feof_unlocked(__fp) (((__fp)->_flags & _IO_EOF_SEEN) != 0) 174extern int _IO_ferror(_IO_FILE *stream); 175#define _IO_ferror_unlocked(__fp) (((__fp)->_flags & _IO_ERR_SEEN) != 0) 176extern int _IO_putc(int c, _IO_FILE *stream); 177extern int _IO_getc(_IO_FILE *stream); 178 179extern int __underflow(_IO_FILE *stream); 180extern int __uflow(_IO_FILE *stream); 181extern int __overflow(_IO_FILE *stream, int c); 182 183extern int _IO_peekc_locked(_IO_FILE *stream); 184 185/* This one is for Emacs. */ 186#define _IO_PENDING_OUTPUT_COUNT(_fp) \ 187 ((_fp)->_IO_write_ptr - (_fp)->_IO_write_base) 188 189extern void _IO_flockfile(_IO_FILE *); 190extern void _IO_funlockfile(_IO_FILE *); 191extern int _IO_ftrylockfile(_IO_FILE *); 192 193#ifdef _IO_MTSAFE_IO 194# define _IO_peekc(_fp) _IO_peekc_locked (_fp) 195#else 196# define _IO_peekc(_fp) _IO_peekc_unlocked (_fp) 197# define _IO_flockfile(_fp) /**/ 198# define _IO_funlockfile(_fp) /**/ 199# define _IO_ftrylockfile(_fp) /**/ 200# define _IO_cleanup_region_start(_fct, _fp) /**/ 201# define _IO_cleanup_region_end(_Doit) /**/ 202#endif /* !_IO_MTSAFE_IO */ 203 204extern int _IO_vfscanf(_IO_FILE *, const char *, va_list, int *); 205extern int _IO_vfprintf(_IO_FILE *, const char *, va_list); 206extern _IO_ssize_t _IO_padn(_IO_FILE *, int, _IO_ssize_t); 207extern _IO_size_t _IO_sgetn(_IO_FILE *, void *, _IO_size_t); 208 209extern _IO_fpos64_t _IO_seekoff(_IO_FILE *, _IO_off64_t, int, int); 210extern _IO_fpos64_t _IO_seekpos(_IO_FILE *, _IO_fpos64_t, int); 211 212extern void _IO_free_backup_area(_IO_FILE *); 213 214#if __GNUC__ >= 3 215# define _IO_BE(expr, res) __builtin_expect (expr, res) 216#else 217# define _IO_BE(expr, res) (expr) 218#endif 219 220#define _IO_getc_unlocked(_fp) \ 221 (_IO_BE ((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end, 0) \ 222 ? __uflow (_fp) : *(unsigned char *) (_fp)->_IO_read_ptr++) 223#define _IO_peekc_unlocked(_fp) \ 224 (_IO_BE ((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end, 0) \ 225 && __underflow (_fp) == EOF ? EOF \ 226 : *(unsigned char *) (_fp)->_IO_read_ptr) 227#define _IO_putc_unlocked(_ch, _fp) \ 228 (_IO_BE ((_fp)->_IO_write_ptr >= (_fp)->_IO_write_end, 0) \ 229 ? __overflow (_fp, (unsigned char) (_ch)) \ 230 : (unsigned char) (*(_fp)->_IO_write_ptr++ = (_ch))) 231 232 233 234#ifdef __cplusplus 235} 236#endif 237 238#endif /* _IO_STDIO_H_ */ 239