about summary refs log tree commit diff
path: root/libio/bits/libio.h
blob: cefc2c855b9bc573638109934545c56fc6420f62 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
/* Copyright (C) 1991-2018 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Written by Per Bothner <bothner@cygnus.com>.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.

   As a special exception, if you link the code in this file with
   files compiled with a GNU compiler to produce an executable,
   that does not cause the resulting executable to be covered by
   the GNU Lesser General Public License.  This exception does not
   however invalidate any other reasons why the executable file
   might be covered by the GNU Lesser General Public License.
   This exception applies to code released by its copyright holders
   in files containing the exception.  */

#ifndef _BITS_LIBIO_H
#define _BITS_LIBIO_H 1

#include <stdio.h>

#include <bits/_G_config.h>
/* ALL of these should be defined in _G_config.h */
#define _IO_fpos_t __fpos_t
#define _IO_fpos64_t __fpos64_t
#define _IO_size_t size_t
#define _IO_ssize_t __ssize_t
#define _IO_off_t __off_t
#define _IO_off64_t __off64_t
#define _IO_pid_t __pid_t
#define _IO_uid_t __uid_t
#define _IO_iconv_t _G_iconv_t
#define _IO_HAVE_ST_BLKSIZE _G_HAVE_ST_BLKSIZE
#define _IO_BUFSIZ BUFSIZ
#define _IO_wint_t wint_t
#define _IO_va_list __gnuc_va_list

/* compatibility defines */
#define _STDIO_USES_IOSTREAM
#define _IO_UNIFIED_JUMPTABLES 1
#define __HAVE_COLUMN
#define _IO_file_flags _flags

/* open modes */
#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 available 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
#define _IO_BAD_SEEN 0x4000
#define _IO_USER_LOCK 0x8000

#define _IO_FLAGS2_MMAP 1
#define _IO_FLAGS2_NOTCANCEL 2
#ifdef _LIBC
# define _IO_FLAGS2_FORTIFY 4
#endif
#define _IO_FLAGS2_USER_WBUF 8
#ifdef _LIBC
# define _IO_FLAGS2_SCANF_STD 16
# define _IO_FLAGS2_NOCLOSE 32
# define _IO_FLAGS2_CLOEXEC 64
# define _IO_FLAGS2_NEED_LOCK 128
#endif

/* 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
#define _IO_BOOLALPHA 0200000


struct _IO_jump_t;

/* 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;
};

/* This is the structure from the libstdc++ codecvt class.  */
enum __codecvt_result
{
  __codecvt_ok,
  __codecvt_partial,
  __codecvt_error,
  __codecvt_noconv
};

#if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
/* The order of the elements in the following struct must match the order
   of the virtual functions in the libstdc++ codecvt class.  */
struct _IO_codecvt
{
  void (*__codecvt_destr) (struct _IO_codecvt *);
  enum __codecvt_result (*__codecvt_do_out) (struct _IO_codecvt *,
					     __mbstate_t *,
					     const wchar_t *,
					     const wchar_t *,
					     const wchar_t **, char *,
					     char *, char **);
  enum __codecvt_result (*__codecvt_do_unshift) (struct _IO_codecvt *,
						 __mbstate_t *, char *,
						 char *, char **);
  enum __codecvt_result (*__codecvt_do_in) (struct _IO_codecvt *,
					    __mbstate_t *,
					    const char *, const char *,
					    const char **, wchar_t *,
					    wchar_t *, wchar_t **);
  int (*__codecvt_do_encoding) (struct _IO_codecvt *);
  int (*__codecvt_do_always_noconv) (struct _IO_codecvt *);
  int (*__codecvt_do_length) (struct _IO_codecvt *, __mbstate_t *,
			      const char *, const char *, _IO_size_t);
  int (*__codecvt_do_max_length) (struct _IO_codecvt *);

  _IO_iconv_t __cd_in;
  _IO_iconv_t __cd_out;
};

/* Extra data for wide character streams.  */
struct _IO_wide_data
{
  wchar_t *_IO_read_ptr;	/* Current read pointer */
  wchar_t *_IO_read_end;	/* End of get area. */
  wchar_t *_IO_read_base;	/* Start of putback+get area. */
  wchar_t *_IO_write_base;	/* Start of put area. */
  wchar_t *_IO_write_ptr;	/* Current put pointer. */
  wchar_t *_IO_write_end;	/* End of put area. */
  wchar_t *_IO_buf_base;	/* Start of reserve area. */
  wchar_t *_IO_buf_end;		/* End of reserve area. */
  /* The following fields are used to support backing up and undo. */
  wchar_t *_IO_save_base;	/* Pointer to start of non-current get area. */
  wchar_t *_IO_backup_base;	/* Pointer to first valid character of
				   backup area */
  wchar_t *_IO_save_end;	/* Pointer to end of non-current get area. */

  __mbstate_t _IO_state;
  __mbstate_t _IO_last_state;
  struct _IO_codecvt _codecvt;

  wchar_t _shortbuf[1];

  const struct _IO_jump_t *_wide_vtable;
};
#endif


#ifndef __cplusplus
typedef struct _IO_FILE _IO_FILE;
#endif

struct _IO_FILE_plus;

extern struct _IO_FILE_plus _IO_2_1_stdin_;
extern struct _IO_FILE_plus _IO_2_1_stdout_;
extern struct _IO_FILE_plus _IO_2_1_stderr_;
#ifndef _LIBC
#define _IO_stdin ((_IO_FILE*)(&_IO_2_1_stdin_))
#define _IO_stdout ((_IO_FILE*)(&_IO_2_1_stdout_))
#define _IO_stderr ((_IO_FILE*)(&_IO_2_1_stderr_))
#else
extern _IO_FILE *_IO_stdin attribute_hidden;
extern _IO_FILE *_IO_stdout attribute_hidden;
extern _IO_FILE *_IO_stderr attribute_hidden;
#endif


/* Compatibility names for cookie I/O functions.  */
#ifdef __USE_GNU
typedef cookie_read_function_t __io_read_fn;
typedef cookie_write_function_t __io_write_fn;
typedef cookie_seek_function_t __io_seek_fn;
typedef cookie_close_function_t __io_close_fn;
typedef cookie_io_functions_t _IO_cookie_io_functions_t;

struct _IO_cookie_file;

/* Initialize one of those.  */
extern void _IO_cookie_init (struct _IO_cookie_file *__cfile, int __read_write,
			     void *__cookie, _IO_cookie_io_functions_t __fns);
#endif


#ifdef __cplusplus
extern "C" {
#endif

extern int __underflow (_IO_FILE *);
#if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
extern _IO_wint_t __wunderflow (_IO_FILE *);
extern _IO_wint_t __wuflow (_IO_FILE *);
extern _IO_wint_t __woverflow (_IO_FILE *, _IO_wint_t);
#endif

#if  __GNUC__ >= 3
# define _IO_BE(expr, res) __builtin_expect ((expr), res)
#else
# define _IO_BE(expr, res) (expr)
#endif

#define _IO_getc_unlocked(_fp) __getc_unlocked_body (_fp)
#define _IO_peekc_unlocked(_fp) \
       (_IO_BE ((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end, 0) \
	  && __underflow (_fp) == EOF ? EOF \
	: *(unsigned char *) (_fp)->_IO_read_ptr)
#define _IO_putc_unlocked(_ch, _fp) __putc_unlocked_body (_ch, _fp)

#if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
# define _IO_getwc_unlocked(_fp) \
  (_IO_BE ((_fp)->_wide_data == NULL					\
	   || ((_fp)->_wide_data->_IO_read_ptr				\
	       >= (_fp)->_wide_data->_IO_read_end), 0)			\
   ? __wuflow (_fp) : (_IO_wint_t) *(_fp)->_wide_data->_IO_read_ptr++)
# define _IO_putwc_unlocked(_wch, _fp) \
  (_IO_BE ((_fp)->_wide_data == NULL					\
	   || ((_fp)->_wide_data->_IO_write_ptr				\
	       >= (_fp)->_wide_data->_IO_write_end), 0)			\
   ? __woverflow (_fp, _wch)						\
   : (_IO_wint_t) (*(_fp)->_wide_data->_IO_write_ptr++ = (_wch)))
#endif

#define _IO_feof_unlocked(_fp) __feof_unlocked_body (_fp)
#define _IO_ferror_unlocked(_fp) __ferror_unlocked_body (_fp)

extern int _IO_getc (_IO_FILE *__fp);
extern int _IO_putc (int __c, _IO_FILE *__fp);
extern int _IO_feof (_IO_FILE *__fp) __THROW;
extern int _IO_ferror (_IO_FILE *__fp) __THROW;

extern int _IO_peekc_locked (_IO_FILE *__fp);

/* This one is for Emacs. */
#define _IO_PENDING_OUTPUT_COUNT(_fp)	\
	((_fp)->_IO_write_ptr - (_fp)->_IO_write_base)

extern void _IO_flockfile (_IO_FILE *) __THROW;
extern void _IO_funlockfile (_IO_FILE *) __THROW;
extern int _IO_ftrylockfile (_IO_FILE *) __THROW;

#define _IO_peekc(_fp) _IO_peekc_unlocked (_fp)
#define _IO_flockfile(_fp) /**/
#define _IO_funlockfile(_fp) /**/
#define _IO_ftrylockfile(_fp) /**/
#ifndef _IO_cleanup_region_start
#define _IO_cleanup_region_start(_fct, _fp) /**/
#endif
#ifndef _IO_cleanup_region_end
#define _IO_cleanup_region_end(_Doit) /**/
#endif

#define _IO_need_lock(_fp) \
  (((_fp)->_flags2 & _IO_FLAGS2_NEED_LOCK) != 0)

extern int _IO_vfscanf (_IO_FILE * __restrict, const char * __restrict,
			_IO_va_list, int *__restrict);
extern int _IO_vfprintf (_IO_FILE *__restrict, const char *__restrict,
			 _IO_va_list);
extern _IO_ssize_t _IO_padn (_IO_FILE *, int, _IO_ssize_t);
extern _IO_size_t _IO_sgetn (_IO_FILE *, void *, _IO_size_t);

extern _IO_off64_t _IO_seekoff (_IO_FILE *, _IO_off64_t, int, int);
extern _IO_off64_t _IO_seekpos (_IO_FILE *, _IO_off64_t, int);

extern void _IO_free_backup_area (_IO_FILE *) __THROW;

#if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
extern _IO_wint_t _IO_getwc (_IO_FILE *__fp);
extern _IO_wint_t _IO_putwc (wchar_t __wc, _IO_FILE *__fp);
extern int _IO_fwide (_IO_FILE *__fp, int __mode) __THROW;
# if __GNUC__ >= 2
/* While compiling glibc we have to handle compatibility with very old
   versions.  */
#  if defined _LIBC && defined SHARED
#   include <shlib-compat.h>
#   if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
#    define _IO_fwide_maybe_incompatible \
  (__builtin_expect (&_IO_stdin_used == NULL, 0))
extern const int _IO_stdin_used;
weak_extern (_IO_stdin_used);
#   endif
#  endif
#  ifndef _IO_fwide_maybe_incompatible
#   define _IO_fwide_maybe_incompatible (0)
#  endif
/* A special optimized version of the function above.  It optimizes the
   case of initializing an unoriented byte stream.  */
#  define _IO_fwide(__fp, __mode) \
  ({ int __result = (__mode);						      \
     if (__result < 0 && ! _IO_fwide_maybe_incompatible)		      \
       {								      \
	 if ((__fp)->_mode == 0)					      \
	   /* We know that all we have to do is to set the flag.  */	      \
	   (__fp)->_mode = -1;						      \
	 __result = (__fp)->_mode;					      \
       }								      \
     else if (__builtin_constant_p (__mode) && (__mode) == 0)		      \
       __result = _IO_fwide_maybe_incompatible ? -1 : (__fp)->_mode;	      \
     else								      \
       __result = _IO_fwide (__fp, __result);				      \
     __result; })
# endif

extern int _IO_vfwscanf (_IO_FILE * __restrict, const wchar_t * __restrict,
			 _IO_va_list, int *__restrict);
extern int _IO_vfwprintf (_IO_FILE *__restrict, const wchar_t *__restrict,
			  _IO_va_list);
extern _IO_ssize_t _IO_wpadn (_IO_FILE *, wint_t, _IO_ssize_t);
extern void _IO_free_wbackup_area (_IO_FILE *) __THROW;
#endif

#ifdef __LDBL_COMPAT
# include <bits/libio-ldbl.h>
#endif

#ifdef __cplusplus
}
#endif

#endif /* _BITS_LIBIO_H */