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1.1 root 1: /*
2: Copyright (C) 1993 Free Software Foundation
3:
4: This file is part of the GNU IO Library. This library is free
5: software; you can redistribute it and/or modify it under the
6: terms of the GNU General Public License as published by the
7: Free Software Foundation; either version 2, or (at your option)
8: any later version.
9:
10: This library is distributed in the hope that it will be useful,
11: but WITHOUT ANY WARRANTY; without even the implied warranty of
12: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13: GNU General Public License for more details.
14:
15: You should have received a copy of the GNU General Public License
16: along with GNU CC; see the file COPYING. If not, write to
17: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
18:
19: As a special exception, if you link this library with files
20: compiled with a GNU compiler to produce an executable, this does not cause
21: the resulting executable to be covered by the GNU General Public License.
22: This exception does not however invalidate any other reasons why
23: the executable file might be covered by the GNU General Public License. */
24:
25: /* This is part of the iostream library.
26: Copyright (C) 1991, 1992 Per Bothner. */
27:
28: #ifndef _IO_STDIO_H
29: #define _IO_STDIO_H
30: #ifdef __GNUG__
31: #pragma interface
32: #pragma cplusplus
33: #endif
34:
35: #if 1
36: #include <_G_config.h>
37: #define _IO_pos_t _G_fpos_t /* obsolete */
38: #define _IO_fpos_t _G_fpos_t
39: #define _IO_size_t _G_size_t
40: #define _IO_ssize_t _G_ssize_t
41: #define _IO_off_t _G_off_t
42: #define _IO_pid_t _G_pid_t
43: #define _IO_HAVE_SYS_WAIT _G_HAVE_SYS_WAIT
44: #define _IO_BUFSIZ _G_BUFSIZ
45: #define _IO_va_list _G_va_list
46:
47: #ifdef _G_NEED_STDARG_H
48: /* This define avoids name pollution if we're using GNU stdarg.h */
49: #define __need___va_list
50: extern "C" {
51: #include <stdarg.h>
52: }
53: #ifdef __GNUC_VA_LIST
54: #undef _IO_va_list
55: #define _IO_va_list __gnuc_va_list
56: #endif /* __GNUC_VA_LIST */
57: #endif
58:
59: #else
60: #include <_IO_config.h>
61: typedef _IO_fpos_t _IO_pos_t;
62: #endif
63:
64: #ifndef _PARAMS
65: #ifdef __STDC__
66: #define _PARAMS(paramlist) paramlist
67: #else
68: #define _PARAMS(paramlist) ()
69: #endif
70: #endif /*!_PARAMS*/
71: #ifndef __STDC__
72: #define const
73: #endif
74: #define USE_DTOA
75:
76: #if 0
77: #ifdef _IO_NEED_STDARG_H
78: extern "C" {
79: #include <stdarg.h>
80: }
81: #endif
82: #endif
83:
84: #ifndef EOF
85: #define EOF (-1)
86: #endif
87: #ifndef NULL
88: #if !defined(__cplusplus) || defined(__GNUC__)
89: #define NULL ((void*)0)
90: #else
91: #define NULL (0)
92: #endif
93: #endif
94:
95: #define _IOS_INPUT 1
96: #define _IOS_OUTPUT 2
97: #define _IOS_ATEND 4
98: #define _IOS_APPEND 8
99: #define _IOS_TRUNC 16
100: #define _IOS_NOCREATE 32
101: #define _IOS_NOREPLACE 64
102: #define _IOS_BIN 128
103:
104: /* Magic numbers and bits for the _flags field.
105: The magic numbers use the high-order bits of _flags;
106: the remaining bits are abailable for variable flags.
107: Note: The magic numbers must all be negative if stdio
108: emulation is desired. */
109:
110: #define _IO_MAGIC 0xFBAD0000 /* Magic number */
111: #define _OLD_STDIO_MAGIC 0xFABC0000 /* Emulate old stdio. */
112: #define _IO_MAGIC_MASK 0xFFFF0000
113: #define _IO_USER_BUF 1 /* User owns buffer; don't delete it on close. */
114: #define _IO_UNBUFFERED 2
115: #define _IO_NO_READS 4 /* Reading not allowed */
116: #define _IO_NO_WRITES 8 /* Writing not allowd */
117: #define _IO_EOF_SEEN 0x10
118: #define _IO_ERR_SEEN 0x20
119: #define _IO_DELETE_DONT_CLOSE 0x40
120: #define _IO_LINKED 0x80 /* Set if linked (using _chain) to streambuf::_list_all.*/
121: #define _IO_IN_BACKUP 0x100
122: #define _IO_LINE_BUF 0x200
123: #define _IO_TIED_PUT_GET 0x400 /* Set if put and get pointer logicly tied. */
124: #define _IO_CURRENTLY_PUTTING 0x800
125: #define _IO_IS_APPENDING 0x1000
126: #define _IO_IS_FILEBUF 0x2000
127:
128: /* These are "formatting flags" matching the iostream fmtflags enum values. */
129: #define _IO_SKIPWS 01
130: #define _IO_LEFT 02
131: #define _IO_RIGHT 04
132: #define _IO_INTERNAL 010
133: #define _IO_DEC 020
134: #define _IO_OCT 040
135: #define _IO_HEX 0100
136: #define _IO_SHOWBASE 0200
137: #define _IO_SHOWPOINT 0400
138: #define _IO_UPPERCASE 01000
139: #define _IO_SHOWPOS 02000
140: #define _IO_SCIENTIFIC 04000
141: #define _IO_FIXED 010000
142: #define _IO_UNITBUF 020000
143: #define _IO_STDIO 040000
144: #define _IO_DONT_CLOSE 0100000
145:
146: /* A streammarker remembers a position in a buffer. */
147:
148: struct _IO_jump_t; struct _IO_FILE;
149:
150: struct _IO_marker {
151: struct _IO_marker *_next;
152: struct _IO_FILE *_sbuf;
153: /* If _pos >= 0
154: it points to _buf->Gbase()+_pos. FIXME comment */
155: /* if _pos < 0, it points to _buf->eBptr()+_pos. FIXME comment */
156: int _pos;
157: #if 0
158: void set_streampos(streampos sp) { _spos = sp; }
159: void set_offset(int offset) { _pos = offset; _spos = (streampos)(-2); }
160: public:
161: streammarker(streambuf *sb);
162: ~streammarker();
163: int saving() { return _spos == -2; }
164: int delta(streammarker&);
165: int delta();
166: #endif
167: };
168:
169: struct _IO_FILE {
170: int _flags; /* High-order word is _IO_MAGIC; rest is flags. */
171: #define _IO_file_flags _flags
172:
173: /* The following pointers correspond to the C++ streambuf protocol. */
174: char* _IO_read_ptr; /* Current read pointer */
175: char* _IO_read_end; /* End of get area. */
176: char* _IO_read_base; /* Start of putback+get area. */
177: char* _IO_write_base; /* Start of put area. */
178: char* _IO_write_ptr; /* Current put pointer. */
179: char* _IO_write_end; /* End of put area. */
180: char* _IO_buf_base; /* Start of reserve area. */
181: char* _IO_buf_end; /* End of reserve area. */
182: /* The following fields are used to support backing up and undo. */
183: char *_IO_save_base; /* Pointer to start of non-current get area. */
184: char *_IO_backup_base; /* Pointer to first valid character of backup area */
185: char *_IO_save_end; /* Pointer to end of non-current get area. */
186:
187: /* These names are temporary aliases. TODO */
188: #define _other_gbase _IO_save_base
189: #define _aux_limit _IO_backup_base
190: #define _other_egptr _IO_save_end
191:
192: struct _IO_marker *_markers;
193:
194: struct _IO_FILE *_chain;
195:
196: struct _IO_jump_t *_jumps; /* Jump table */
197:
198: int _fileno;
199: int _blksize;
200: _IO_off_t _offset;
201:
202: #define __HAVE_COLUMN /* temporary */
203: /* 1+column number of pbase(); 0 is unknown. */
204: unsigned short _cur_column;
205: char _unused;
206: char _shortbuf[1];
207:
208: /* char* _save_gptr; char* _save_egptr; */
209: };
210:
211: #ifndef __cplusplus
212: typedef struct _IO_FILE _IO_FILE;
213: #endif
214:
215: /* We always allocate an extra word following an _IO_FILE.
216: This is for compatibility with C++ streambuf; the word can
217: be used to smash to a pointer to a virtual function table. */
218:
219: struct _IO_FILE_plus {
220: _IO_FILE _file;
221: const void *_vtable;
222: };
223:
224: extern struct _IO_FILE_plus _IO_stdin_, _IO_stdout_, _IO_stderr_;
225: #define _IO_stdin (&_IO_stdin_._file)
226: #define _IO_stdout (&_IO_stdout_._file)
227: #define _IO_stderr (&_IO_stderr_._file)
228:
229: #ifdef __cplusplus
230: extern "C" {
231: #endif
232:
233: extern int __underflow _PARAMS((_IO_FILE*));
234: extern int __overflow _PARAMS((_IO_FILE*, int));
235:
236: extern unsigned __adjust_column _PARAMS((unsigned start, const char *line, int count));
237:
238: #define _IO_getc(_fp) \
239: ((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end \
240: && __underflow(_fp) == EOF ? EOF \
241: : *(unsigned char*)(_fp)->_IO_read_ptr++)
242: #define _IO_peekc(_fp) \
243: ((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end \
244: && __underflow(_fp) == EOF ? EOF \
245: : *(unsigned char*)(_fp)->_IO_read_ptr)
246:
247: #define _IO_putc(_ch, _fp) \
248: (((_fp)->_IO_write_ptr >= (_fp)->_IO_write_end) \
249: ? __overflow(_fp, (unsigned char)_ch) \
250: : (unsigned char)(*(_fp)->_IO_write_ptr++ = _ch))
251:
252: extern int _IO_vfscanf _PARAMS((_IO_FILE*, const char*, _IO_va_list, int*));
253: extern int _IO_vfprintf _PARAMS((_IO_FILE*, const char*, _IO_va_list));
254: extern _IO_ssize_t _IO_padn _PARAMS((_IO_FILE *, int, _IO_ssize_t));
255: extern _IO_size_t _IO_sgetn _PARAMS((_IO_FILE *, void*, _IO_size_t));
256:
257: extern void _IO_free_backup_area _PARAMS((_IO_FILE*));
258:
259: #ifdef __cplusplus
260: }
261: #endif
262:
263: #endif /* _IO_STDIO_H */
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