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1.1 root 1: /*
2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7: * Reserved. This file contains Original Code and/or Modifications of
8: * Original Code as defined in and that are subject to the Apple Public
9: * Source License Version 1.1 (the "License"). You may not use this file
10: * except in compliance with the License. Please obtain a copy of the
11: * License at http://www.apple.com/publicsource and read it before using
12: * this file.
13: *
14: * The Original Code and all software distributed under the License are
15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
19: * License for the specific language governing rights and limitations
20: * under the License.
21: *
22: * @APPLE_LICENSE_HEADER_END@
23: */
24:
25: /*-
26: * Copyright (c) 1990, 1993
27: * The Regents of the University of California. All rights reserved.
28: *
29: * This code is derived from software contributed to Berkeley by
30: * Chris Torek.
31: *
32: * Redistribution and use in source and binary forms, with or without
33: * modification, are permitted provided that the following conditions
34: * are met:
35: * 1. Redistributions of source code must retain the above copyright
36: * notice, this list of conditions and the following disclaimer.
37: * 2. Redistributions in binary form must reproduce the above copyright
38: * notice, this list of conditions and the following disclaimer in the
39: * documentation and/or other materials provided with the distribution.
40: * 3. All advertising materials mentioning features or use of this software
41: * must display the following acknowledgement:
42: * This product includes software developed by the University of
43: * California, Berkeley and its contributors.
44: * 4. Neither the name of the University nor the names of its contributors
45: * may be used to endorse or promote products derived from this software
46: * without specific prior written permission.
47: *
48: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
49: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
52: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58: * SUCH DAMAGE.
59: *
60: * @(#)stdio.h 8.5 (Berkeley) 4/29/95
61: */
62:
63: #ifndef _STDIO_H_
64: #define _STDIO_H_
65:
66: #if !defined(_ANSI_SOURCE) && !defined(__STRICT_ANSI__)
67: #include <sys/types.h>
68: #endif
69:
70: #include <sys/cdefs.h>
71:
72: #include <machine/ansi.h>
73: #ifndef _BSD_SIZE_T_DEFINED_
74: #define _BSD_SIZE_T_DEFINED_
75: typedef _BSD_SIZE_T_ size_t;
76: #endif
77:
78: #ifndef NULL
79: #define NULL 0
80: #endif
81:
82: /*
83: * This is fairly grotesque, but pure ANSI code must not inspect the
84: * innards of an fpos_t anyway. The library internally uses off_t,
85: * which we assume is exactly as big as eight chars. (When we switch
86: * to gcc 2.4 we will use __attribute__ here.)
87: *
88: * WARNING: the alignment constraints on an off_t and the struct below
89: * differ on (e.g.) the SPARC. Hence, the placement of an fpos_t object
90: * in a structure will change if fpos_t's are not aligned on 8-byte
91: * boundaries. THIS IS A CROCK, but for now there is no way around it.
92: */
93: #if !defined(_ANSI_SOURCE) && !defined(__STRICT_ANSI__)
94: typedef off_t fpos_t;
95: #else
96: typedef struct __sfpos {
97: char _pos[8];
98: } fpos_t;
99: #endif
100:
101: #define _FSTDIO /* Define for new stdio with functions. */
102:
103: /*
104: * NB: to fit things in six character monocase externals, the stdio
105: * code uses the prefix `__s' for stdio objects, typically followed
106: * by a three-character attempt at a mnemonic.
107: */
108:
109: /* stdio buffers */
110: struct __sbuf {
111: unsigned char *_base;
112: int _size;
113: };
114:
115: /*
116: * stdio state variables.
117: *
118: * The following always hold:
119: *
120: * if (_flags&(__SLBF|__SWR)) == (__SLBF|__SWR),
121: * _lbfsize is -_bf._size, else _lbfsize is 0
122: * if _flags&__SRD, _w is 0
123: * if _flags&__SWR, _r is 0
124: *
125: * This ensures that the getc and putc macros (or inline functions) never
126: * try to write or read from a file that is in `read' or `write' mode.
127: * (Moreover, they can, and do, automatically switch from read mode to
128: * write mode, and back, on "r+" and "w+" files.)
129: *
130: * _lbfsize is used only to make the inline line-buffered output stream
131: * code as compact as possible.
132: *
133: * _ub, _up, and _ur are used when ungetc() pushes back more characters
134: * than fit in the current _bf, or when ungetc() pushes back a character
135: * that does not match the previous one in _bf. When this happens,
136: * _ub._base becomes non-nil (i.e., a stream has ungetc() data iff
137: * _ub._base!=NULL) and _up and _ur save the current values of _p and _r.
138: *
139: * NB: see WARNING above before changing the layout of this structure!
140: */
141: typedef struct __sFILE {
142: unsigned char *_p; /* current position in (some) buffer */
143: int _r; /* read space left for getc() */
144: int _w; /* write space left for putc() */
145: short _flags; /* flags, below; this FILE is free if 0 */
146: short _file; /* fileno, if Unix descriptor, else -1 */
147: struct __sbuf _bf; /* the buffer (at least 1 byte, if !NULL) */
148: int _lbfsize; /* 0 or -_bf._size, for inline putc */
149:
150: /* operations */
151: void *_cookie; /* cookie passed to io functions */
152: int (*_close) __P((void *));
153: int (*_read) __P((void *, char *, int));
154: fpos_t (*_seek) __P((void *, fpos_t, int));
155: int (*_write) __P((void *, const char *, int));
156:
157: /* separate buffer for long sequences of ungetc() */
158: struct __sbuf _ub; /* ungetc buffer */
159: unsigned char *_up; /* saved _p when _p is doing ungetc data */
160: int _ur; /* saved _r when _r is counting ungetc data */
161:
162: /* tricks to meet minimum requirements even when malloc() fails */
163: unsigned char _ubuf[3]; /* guarantee an ungetc() buffer */
164: unsigned char _nbuf[1]; /* guarantee a getc() buffer */
165:
166: /* separate buffer for fgetln() when line crosses buffer boundary */
167: struct __sbuf _lb; /* buffer for fgetln() */
168:
169: /* Unix stdio files get aligned to block boundaries on fseek() */
170: int _blksize; /* stat.st_blksize (may be != _bf._size) */
171: fpos_t _offset; /* current lseek offset (see WARNING) */
172: } FILE;
173:
174: __BEGIN_DECLS
175: extern FILE __sF[];
176: __END_DECLS
177:
178: #define __SLBF 0x0001 /* line buffered */
179: #define __SNBF 0x0002 /* unbuffered */
180: #define __SRD 0x0004 /* OK to read */
181: #define __SWR 0x0008 /* OK to write */
182: /* RD and WR are never simultaneously asserted */
183: #define __SRW 0x0010 /* open for reading & writing */
184: #define __SEOF 0x0020 /* found EOF */
185: #define __SERR 0x0040 /* found error */
186: #define __SMBF 0x0080 /* _buf is from malloc */
187: #define __SAPP 0x0100 /* fdopen()ed in append mode */
188: #define __SSTR 0x0200 /* this is an sprintf/snprintf string */
189: #define __SOPT 0x0400 /* do fseek() optimisation */
190: #define __SNPT 0x0800 /* do not do fseek() optimisation */
191: #define __SOFF 0x1000 /* set iff _offset is in fact correct */
192: #define __SMOD 0x2000 /* true => fgetln modified _p text */
193:
194: /*
195: * The following three definitions are for ANSI C, which took them
196: * from System V, which brilliantly took internal interface macros and
197: * made them official arguments to setvbuf(), without renaming them.
198: * Hence, these ugly _IOxxx names are *supposed* to appear in user code.
199: *
200: * Although numbered as their counterparts above, the implementation
201: * does not rely on this.
202: */
203: #define _IOFBF 0 /* setvbuf should set fully buffered */
204: #define _IOLBF 1 /* setvbuf should set line buffered */
205: #define _IONBF 2 /* setvbuf should set unbuffered */
206:
207: #define BUFSIZ 1024 /* size of buffer used by setbuf */
208: #define EOF (-1)
209:
210: /*
211: * FOPEN_MAX is a minimum maximum, and is the number of streams that
212: * stdio can provide without attempting to allocate further resources
213: * (which could fail). Do not use this for anything.
214: */
215: /* must be == _POSIX_STREAM_MAX <limits.h> */
216: #define FOPEN_MAX 20 /* must be <= OPEN_MAX <sys/syslimits.h> */
217: #define FILENAME_MAX 1024 /* must be <= PATH_MAX <sys/syslimits.h> */
218:
219: /* System V/ANSI C; this is the wrong way to do this, do *not* use these. */
220: #ifndef _ANSI_SOURCE
221: #define P_tmpdir "/var/tmp/"
222: #endif
223: #define L_tmpnam 1024 /* XXX must be == PATH_MAX */
224: #define TMP_MAX 308915776
225:
226: #ifndef SEEK_SET
227: #define SEEK_SET 0 /* set file offset to offset */
228: #endif
229: #ifndef SEEK_CUR
230: #define SEEK_CUR 1 /* set file offset to current plus offset */
231: #endif
232: #ifndef SEEK_END
233: #define SEEK_END 2 /* set file offset to EOF plus offset */
234: #endif
235:
236: #define stdin (&__sF[0])
237: #define stdout (&__sF[1])
238: #define stderr (&__sF[2])
239:
240: /*
241: * Functions defined in ANSI C standard.
242: */
243: __BEGIN_DECLS
244: void clearerr __P((FILE *));
245: int fclose __P((FILE *));
246: int feof __P((FILE *));
247: int ferror __P((FILE *));
248: int fflush __P((FILE *));
249: int fgetc __P((FILE *));
250: int fgetpos __P((FILE *, fpos_t *));
251: char *fgets __P((char *, size_t, FILE *));
252: FILE *fopen __P((const char *, const char *));
253: int fprintf __P((FILE *, const char *, ...));
254: int fputc __P((int, FILE *));
255: int fputs __P((const char *, FILE *));
256: size_t fread __P((void *, size_t, size_t, FILE *));
257: FILE *freopen __P((const char *, const char *, FILE *));
258: int fscanf __P((FILE *, const char *, ...));
259: int fseek __P((FILE *, long, int));
260: int fsetpos __P((FILE *, const fpos_t *));
261: long ftell __P((const FILE *));
262: size_t fwrite __P((const void *, size_t, size_t, FILE *));
263: int getc __P((FILE *));
264: int getchar __P((void));
265: char *gets __P((char *));
266: #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
267: extern int sys_nerr; /* perror(3) external variables */
268: extern __const char *__const sys_errlist[];
269: #endif
270: void perror __P((const char *));
271: int printf __P((const char *, ...));
272: int putc __P((int, FILE *));
273: int putchar __P((int));
274: int puts __P((const char *));
275: int remove __P((const char *));
276: int rename __P((const char *, const char *));
277: void rewind __P((FILE *));
278: int scanf __P((const char *, ...));
279: void setbuf __P((FILE *, char *));
280: int setvbuf __P((FILE *, char *, int, size_t));
281: int sprintf __P((char *, const char *, ...));
282: int sscanf __P((const char *, const char *, ...));
283: FILE *tmpfile __P((void));
284: char *tmpnam __P((char *));
285: int ungetc __P((int, FILE *));
286: int vfprintf __P((FILE *, const char *, _BSD_VA_LIST_));
287: int vprintf __P((const char *, _BSD_VA_LIST_));
288: int vsprintf __P((char *, const char *, _BSD_VA_LIST_));
289: __END_DECLS
290:
291: /*
292: * Functions defined in POSIX 1003.1.
293: */
294: #ifndef _ANSI_SOURCE
295: #define L_cuserid 9 /* size for cuserid(); UT_NAMESIZE + 1 */
296: #define L_ctermid 1024 /* size for ctermid(); PATH_MAX */
297:
298: __BEGIN_DECLS
299: char *ctermid __P((char *));
300: FILE *fdopen __P((int, const char *));
301: int fileno __P((FILE *));
302: __END_DECLS
303: #endif /* not ANSI */
304:
305: /*
306: * Routines that are purely local.
307: */
308: #if !defined (_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
309: __BEGIN_DECLS
310: char *fgetln __P((FILE *, size_t *));
311: int fpurge __P((FILE *));
312: int getw __P((FILE *));
313: int pclose __P((FILE *));
314: FILE *popen __P((const char *, const char *));
315: int putw __P((int, FILE *));
316: void setbuffer __P((FILE *, char *, int));
317: int setlinebuf __P((FILE *));
318: char *tempnam __P((const char *, const char *));
319: int snprintf __P((char *, size_t, const char *, ...));
320: int vsnprintf __P((char *, size_t, const char *, _BSD_VA_LIST_));
321: int vscanf __P((const char *, _BSD_VA_LIST_));
322: int vsscanf __P((const char *, const char *, _BSD_VA_LIST_));
323: FILE *zopen __P((const char *, const char *, int));
324: __END_DECLS
325:
326: /*
327: * This is a #define because the function is used internally and
328: * (unlike vfscanf) the name __svfscanf is guaranteed not to collide
329: * with a user function when _ANSI_SOURCE or _POSIX_SOURCE is defined.
330: */
331: #define vfscanf __svfscanf
332:
333: /*
334: * Stdio function-access interface.
335: */
336: __BEGIN_DECLS
337: FILE *funopen __P((const void *,
338: int (*)(void *, char *, int),
339: int (*)(void *, const char *, int),
340: fpos_t (*)(void *, fpos_t, int),
341: int (*)(void *)));
342: __END_DECLS
343: #define fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0)
344: #define fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0)
345: #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
346:
347: /*
348: * Functions internal to the implementation.
349: */
350: __BEGIN_DECLS
351: int __srget __P((FILE *));
352: int __svfscanf __P((FILE *, const char *, _BSD_VA_LIST_));
353: int __swbuf __P((int, FILE *));
354: __END_DECLS
355:
356: /*
357: * The __sfoo macros are here so that we can
358: * define function versions in the C library.
359: */
360: #define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++))
361: #if defined(__GNUC__) && defined(__STDC__)
362: static __inline int __sputc(int _c, FILE *_p) {
363: if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n'))
364: return (*_p->_p++ = _c);
365: else
366: return (__swbuf(_c, _p));
367: }
368: #else
369: /*
370: * This has been tuned to generate reasonable code on the vax using pcc.
371: */
372: #define __sputc(c, p) \
373: (--(p)->_w < 0 ? \
374: (p)->_w >= (p)->_lbfsize ? \
375: (*(p)->_p = (c)), *(p)->_p != '\n' ? \
376: (int)*(p)->_p++ : \
377: __swbuf('\n', p) : \
378: __swbuf((int)(c), p) : \
379: (*(p)->_p = (c), (int)*(p)->_p++))
380: #endif
381:
382: #define __sfeof(p) (((p)->_flags & __SEOF) != 0)
383: #define __sferror(p) (((p)->_flags & __SERR) != 0)
384: #define __sclearerr(p) ((void)((p)->_flags &= ~(__SERR|__SEOF)))
385: #define __sfileno(p) ((p)->_file)
386:
387: #define feof(p) __sfeof(p)
388: #define ferror(p) __sferror(p)
389: #define clearerr(p) __sclearerr(p)
390:
391: #ifndef _ANSI_SOURCE
392: #define fileno(p) __sfileno(p)
393: #endif
394:
395: #ifndef lint
396: #define getc(fp) __sgetc(fp)
397: #define putc(x, fp) __sputc(x, fp)
398: #endif /* lint */
399:
400: #define getchar() getc(stdin)
401: #define putchar(x) putc(x, stdout)
402: #endif /* _STDIO_H_ */
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