1 /***********************************************************************
2 * *
3 * This software is part of the ast package *
4 * Copyright (c) 1985-2012 AT&T Intellectual Property *
5 * and is licensed under the *
6 * Eclipse Public License, Version 1.0 *
7 * by AT&T Intellectual Property *
8 * *
9 * A copy of the License is available at *
10 * http://www.eclipse.org/org/documents/epl-v10.html *
11 * (with md5 checksum b35adb5213ca9657e911e9befb180842) *
12 * *
13 * Information and Software Systems Research *
14 * AT&T Research *
15 * Florham Park NJ *
16 * *
17 * Glenn Fowler <gsf@research.att.com> *
18 * David Korn <dgk@research.att.com> *
19 * Phong Vo <kpv@research.att.com> *
20 * *
21 ***********************************************************************/
22 #ifndef _SFIO_H
23 #define _SFIO_H 1
24
25 #define SFIO_VERSION 20090915L
26
27 /* Public header file for the sfio library
28 **
29 ** Written by Kiem-Phong Vo
30 */
31
32 typedef struct _sfio_s Sfio_t;
33 typedef struct _sfdisc_s Sfdisc_t;
34
35 #if defined(_AST_STD_H) || defined(_PACKAGE_ast) && defined(_SFIO_PRIVATE)
36 #include <ast_std.h>
37 #else
38 #include <ast_common.h>
39 #endif /* _PACKAGE_ast */
40
41 /* Sfoff_t should be large enough for largest file address */
42 #define Sfoff_t intmax_t
43 #define Sflong_t intmax_t
44 #define Sfulong_t uintmax_t
45 #define Sfdouble_t _ast_fltmax_t
46
47 typedef ssize_t (*Sfread_f)_ARG_((Sfio_t*, Void_t*, size_t, Sfdisc_t*));
48 typedef ssize_t (*Sfwrite_f)_ARG_((Sfio_t*, const Void_t*, size_t, Sfdisc_t*));
49 typedef Sfoff_t (*Sfseek_f)_ARG_((Sfio_t*, Sfoff_t, int, Sfdisc_t*));
50 typedef int (*Sfexcept_f)_ARG_((Sfio_t*, int, Void_t*, Sfdisc_t*));
51 typedef int (*Sfwalk_f)_ARG_((Sfio_t*, Void_t*));
52
53 /* discipline structure */
54 struct _sfdisc_s
55 { Sfread_f readf; /* read function */
56 Sfwrite_f writef; /* write function */
57 Sfseek_f seekf; /* seek function */
58 Sfexcept_f exceptf; /* to handle exceptions */
59 Sfdisc_t* disc; /* the continuing discipline */
60 };
61
62 #include <sfio_s.h>
63
64 /* formatting environment */
65 typedef struct _sffmt_s Sffmt_t;
66 typedef int (*Sffmtext_f)_ARG_((Sfio_t*, Void_t*, Sffmt_t*));
67 typedef int (*Sffmtevent_f)_ARG_((Sfio_t*, int, Void_t*, Sffmt_t*));
68 struct _sffmt_s
69 { long version;/* version of this structure */
70 Sffmtext_f extf; /* function to process arguments */
71 Sffmtevent_f eventf; /* process events */
72
73 char* form; /* format string to stack */
74 va_list args; /* corresponding arg list */
75
76 int fmt; /* format character */
77 ssize_t size; /* object size */
78 int flags; /* formatting flags */
79 int width; /* width of field */
80 int precis; /* precision required */
81 int base; /* conversion base */
82
83 char* t_str; /* type string */
84 ssize_t n_str; /* length of t_str */
85
86 Void_t* mbs; /* multibyte state for format string */
87
88 Void_t* none; /* unused for now */
89 };
90 #define sffmtversion(fe,type) \
91 ((type) ? ((fe)->version = SFIO_VERSION) : (fe)->version)
92
93 #define SFFMT_SSHORT 000000010 /* 'hh' flag, char */
94 #define SFFMT_TFLAG 000000020 /* 't' flag, ptrdiff_t */
95 #define SFFMT_ZFLAG 000000040 /* 'z' flag, size_t */
96
97 #define SFFMT_LEFT 000000100 /* left-justification */
98 #define SFFMT_SIGN 000000200 /* must have a sign */
99 #define SFFMT_BLANK 000000400 /* if not signed, prepend a blank */
100 #define SFFMT_ZERO 000001000 /* zero-padding on the left */
101 #define SFFMT_ALTER 000002000 /* alternate formatting */
102 #define SFFMT_THOUSAND 000004000 /* thousand grouping */
103 #define SFFMT_SKIP 000010000 /* skip assignment in scanf() */
104 #define SFFMT_SHORT 000020000 /* 'h' flag */
105 #define SFFMT_LONG 000040000 /* 'l' flag */
106 #define SFFMT_LLONG 000100000 /* 'll' flag */
107 #define SFFMT_LDOUBLE 000200000 /* 'L' flag */
108 #define SFFMT_VALUE 000400000 /* value is returned */
109 #define SFFMT_ARGPOS 001000000 /* getting arg for $ patterns */
110 #define SFFMT_IFLAG 002000000 /* 'I' flag */
111 #define SFFMT_JFLAG 004000000 /* 'j' flag, intmax_t */
112 #define SFFMT_CENTER 010000000 /* '=' flag, center justification */
113 #define SFFMT_CHOP 020000000 /* chop long string values from left */
114 #define SFFMT_SET 037777770 /* flags settable on calling extf */
115
116 /* for sfmutex() call */
117 #define SFMTX_LOCK 0 /* up mutex count */
118 #define SFMTX_TRYLOCK 1 /* try to up mutex count */
119 #define SFMTX_UNLOCK 2 /* down mutex count */
120 #define SFMTX_CLRLOCK 3 /* clear mutex count */
121
122 /* various constants */
123 #ifndef NULL
124 #define NULL 0
125 #endif
126 #ifndef EOF
127 #define EOF (-1)
128 #endif
129 #ifndef SEEK_SET
130 #define SEEK_SET 0
131 #define SEEK_CUR 1
132 #define SEEK_END 2
133 #endif
134
135 /* bits for various types of files */
136 #define SF_READ 0000001 /* open for reading */
137 #define SF_WRITE 0000002 /* open for writing */
138 #define SF_STRING 0000004 /* a string stream */
139 #define SF_APPENDWR 0000010 /* file is in append mode only */
140 #define SF_MALLOC 0000020 /* buffer is malloc-ed */
141 #define SF_LINE 0000040 /* line buffering */
142 #define SF_SHARE 0000100 /* stream with shared file descriptor */
143 #define SF_EOF 0000200 /* eof was detected */
144 #define SF_ERROR 0000400 /* an error happened */
145 #define SF_STATIC 0001000 /* a stream that cannot be freed */
146 #define SF_IOCHECK 0002000 /* call exceptf before doing IO */
147 #define SF_PUBLIC 0004000 /* SF_SHARE and follow physical seek */
148 #define SF_MTSAFE 0010000 /* need thread safety */
149 #define SF_WHOLE 0020000 /* preserve wholeness of sfwrite/sfputr */
150 #define SF_IOINTR 0040000 /* return on interrupts */
151 #define SF_WCWIDTH 0100000 /* wcwidth display stream */
152
153 #define SF_FLAGS 0177177 /* PUBLIC FLAGS PASSABLE TO SFNEW() */
154 #define SF_SETS 0177163 /* flags passable to sfset() */
155
156 #ifndef _SF_NO_OBSOLETE
157 #define SF_BUFCONST 0400000 /* unused flag - for compatibility only */
158 #endif
159
160 /* for sfgetr/sfreserve to hold a record */
161 #define SF_LOCKR 0000010 /* lock record, stop access to stream */
162 #define SF_LASTR 0000020 /* get the last incomplete record */
163
164 /* exception events: SF_NEW(0), SF_READ(1), SF_WRITE(2) and the below */
165 #define SF_SEEK 3 /* seek error */
166 #define SF_CLOSING 4 /* when stream is about to be closed */
167 #define SF_DPUSH 5 /* when discipline is being pushed */
168 #define SF_DPOP 6 /* when discipline is being popped */
169 #define SF_DPOLL 7 /* see if stream is ready for I/O */
170 #define SF_DBUFFER 8 /* buffer not empty during push or pop */
171 #define SF_SYNC 9 /* announcing start/end synchronization */
172 #define SF_PURGE 10 /* a sfpurge() call was issued */
173 #define SF_FINAL 11 /* closing is done except stream free */
174 #define SF_READY 12 /* a polled stream is ready */
175 #define SF_LOCKED 13 /* stream is in a locked state */
176 #define SF_ATEXIT 14 /* process is exiting */
177 #define SF_EVENT 100 /* start of user-defined events */
178
179 /* for stack and disciplines */
180 #define SF_POPSTACK ((Sfio_t*)0) /* pop the stream stack */
181 #define SF_POPDISC ((Sfdisc_t*)0) /* pop the discipline stack */
182
183 /* for the notify function and discipline exception */
184 #define SF_NEW 0 /* new stream */
185 #define SF_SETFD (-1) /* about to set the file descriptor */
186 #define SF_MTACCESS (-2) /* starting a multi-threaded stream */
187
188 #define SF_BUFSIZE 8192 /* default buffer size */
189 #define SF_UNBOUND (-1) /* unbounded buffer size */
190
191 /* namespace incursion workarounds -- migrate to the new names */
192 #if !_mac_SF_APPEND
193 #define SF_APPEND SF_APPENDWR /* BSDI sys/stat.h */
194 #endif
195 #if !_mac_SF_CLOSE
196 #define SF_CLOSE SF_CLOSING /* AIX sys/socket.h */
197 #endif
198
199 _BEGIN_EXTERNS_
200
201 #if _BLD_sfio && defined(__EXPORT__)
202 #define extern extern __EXPORT__
203 #endif
204 #if !_BLD_sfio && defined(__IMPORT__)
205 #define extern extern __IMPORT__
206 #endif
207
208 extern ssize_t _Sfi;
209 extern ssize_t _Sfmaxr;
210
211 /* standard in/out/err streams */
212 extern Sfio_t* sfstdin;
213 extern Sfio_t* sfstdout;
214 extern Sfio_t* sfstderr;
215
216 #if _UWIN
217 #undef extern
218 #endif
219
220 extern Sfio_t _Sfstdin;
221 extern Sfio_t _Sfstdout;
222 extern Sfio_t _Sfstderr;
223
224 #undef extern
225
226 #if _BLD_sfio && defined(__EXPORT__)
227 #define extern __EXPORT__
228 #endif
229
230 extern Sfio_t* sfnew _ARG_((Sfio_t*, Void_t*, size_t, int, int));
231 extern Sfio_t* sfopen _ARG_((Sfio_t*, const char*, const char*));
232 extern Sfio_t* sfpopen _ARG_((Sfio_t*, const char*, const char*));
233 extern Sfio_t* sfstack _ARG_((Sfio_t*, Sfio_t*));
234 extern Sfio_t* sfswap _ARG_((Sfio_t*, Sfio_t*));
235 extern Sfio_t* sftmp _ARG_((size_t));
236 extern int sfwalk _ARG_((Sfwalk_f, Void_t*, int));
237 extern int sfpurge _ARG_((Sfio_t*));
238 extern int sfpoll _ARG_((Sfio_t**, int, int));
239 extern Void_t* sfreserve _ARG_((Sfio_t*, ssize_t, int));
240 extern int sfresize _ARG_((Sfio_t*, Sfoff_t));
241 extern int sfsync _ARG_((Sfio_t*));
242 extern int sfclrlock _ARG_((Sfio_t*));
243 extern Void_t* sfsetbuf _ARG_((Sfio_t*, Void_t*, size_t));
244 extern Sfdisc_t* sfdisc _ARG_((Sfio_t*,Sfdisc_t*));
245 extern int sfraise _ARG_((Sfio_t*, int, Void_t*));
246 extern int sfnotify _ARG_((void(*)(Sfio_t*, int, void*)));
247 extern int sfset _ARG_((Sfio_t*, int, int));
248 extern int sfsetfd _ARG_((Sfio_t*, int));
249 extern Sfio_t* sfpool _ARG_((Sfio_t*, Sfio_t*, int));
250 extern ssize_t sfread _ARG_((Sfio_t*, Void_t*, size_t));
251 extern ssize_t sfwrite _ARG_((Sfio_t*, const Void_t*, size_t));
252 extern Sfoff_t sfmove _ARG_((Sfio_t*, Sfio_t*, Sfoff_t, int));
253 extern int sfclose _ARG_((Sfio_t*));
254 extern Sfoff_t sftell _ARG_((Sfio_t*));
255 extern Sfoff_t sfseek _ARG_((Sfio_t*, Sfoff_t, int));
256 extern ssize_t sfputr _ARG_((Sfio_t*, const char*, int));
257 extern char* sfgetr _ARG_((Sfio_t*, int, int));
258 extern ssize_t sfnputc _ARG_((Sfio_t*, int, size_t));
259 extern int sfungetc _ARG_((Sfio_t*, int));
260 extern int sfprintf _ARG_((Sfio_t*, const char*, ...));
261 extern char* sfprints _ARG_((const char*, ...));
262 extern ssize_t sfaprints _ARG_((char**, const char*, ...));
263 extern ssize_t sfsprintf _ARG_((char*, size_t, const char*, ...));
264 extern ssize_t sfvsprintf _ARG_((char*, size_t, const char*, va_list));
265 extern ssize_t sfvasprints _ARG_((char**, const char*, va_list));
266 extern int sfvprintf _ARG_((Sfio_t*, const char*, va_list));
267 extern int sfscanf _ARG_((Sfio_t*, const char*, ...));
268 extern int sfsscanf _ARG_((const char*, const char*, ...));
269 extern int sfvsscanf _ARG_((const char*, const char*, va_list));
270 extern int sfvscanf _ARG_((Sfio_t*, const char*, va_list));
271
272 /* mutex locking for thread-safety */
273 extern int sfmutex _ARG_((Sfio_t*, int));
274
275 /* io functions with discipline continuation */
276 extern ssize_t sfrd _ARG_((Sfio_t*, Void_t*, size_t, Sfdisc_t*));
277 extern ssize_t sfwr _ARG_((Sfio_t*, const Void_t*, size_t, Sfdisc_t*));
278 extern Sfoff_t sfsk _ARG_((Sfio_t*, Sfoff_t, int, Sfdisc_t*));
279 extern ssize_t sfpkrd _ARG_((int, Void_t*, size_t, int, long, int));
280
281 /* portable handling of primitive types */
282 extern int sfdlen _ARG_((Sfdouble_t));
283 extern int sfllen _ARG_((Sflong_t));
284 extern int sfulen _ARG_((Sfulong_t));
285
286 extern int sfputd _ARG_((Sfio_t*, Sfdouble_t));
287 extern int sfputl _ARG_((Sfio_t*, Sflong_t));
288 extern int sfputu _ARG_((Sfio_t*, Sfulong_t));
289 extern int sfputm _ARG_((Sfio_t*, Sfulong_t, Sfulong_t));
290 extern int sfputc _ARG_((Sfio_t*, int));
291
292 extern Sfdouble_t sfgetd _ARG_((Sfio_t*));
293 extern Sflong_t sfgetl _ARG_((Sfio_t*));
294 extern Sfulong_t sfgetu _ARG_((Sfio_t*));
295 extern Sfulong_t sfgetm _ARG_((Sfio_t*, Sfulong_t));
296 extern int sfgetc _ARG_((Sfio_t*));
297
298 extern int _sfputd _ARG_((Sfio_t*, Sfdouble_t));
299 extern int _sfputl _ARG_((Sfio_t*, Sflong_t));
300 extern int _sfputu _ARG_((Sfio_t*, Sfulong_t));
301 extern int _sfputm _ARG_((Sfio_t*, Sfulong_t, Sfulong_t));
302 extern int _sfflsbuf _ARG_((Sfio_t*, int));
303
304 extern int _sffilbuf _ARG_((Sfio_t*, int));
305
306 extern int _sfdlen _ARG_((Sfdouble_t));
307 extern int _sfllen _ARG_((Sflong_t));
308 extern int _sfulen _ARG_((Sfulong_t));
309
310 /* miscellaneous function analogues of fast in-line functions */
311 extern Sfoff_t sfsize _ARG_((Sfio_t*));
312 extern int sfclrerr _ARG_((Sfio_t*));
313 extern int sfeof _ARG_((Sfio_t*));
314 extern int sferror _ARG_((Sfio_t*));
315 extern int sffileno _ARG_((Sfio_t*));
316 extern int sfstacked _ARG_((Sfio_t*));
317 extern ssize_t sfvalue _ARG_((Sfio_t*));
318 extern ssize_t sfslen _ARG_((void));
319 extern ssize_t sfmaxr _ARG_((ssize_t, int));
320
321 #undef extern
322 _END_EXTERNS_
323
324 /* coding long integers in a portable and compact fashion */
325 #define SF_SBITS 6
326 #define SF_UBITS 7
327 #define SF_BBITS 8
328 #define SF_SIGN (1 << SF_SBITS)
329 #define SF_MORE (1 << SF_UBITS)
330 #define SF_BYTE (1 << SF_BBITS)
331 #define SF_U1 SF_MORE
332 #define SF_U2 (SF_U1*SF_U1)
333 #define SF_U3 (SF_U2*SF_U1)
334 #define SF_U4 (SF_U3*SF_U1)
335
336 #if __cplusplus
337 #define _SF_(f) (f)
338 #else
339 #define _SF_(f) ((Sfio_t*)(f))
340 #endif
341
342 #define __sf_putd(f,v) (_sfputd(_SF_(f),(Sfdouble_t)(v)))
343 #define __sf_putl(f,v) (_sfputl(_SF_(f),(Sflong_t)(v)))
344 #define __sf_putu(f,v) (_sfputu(_SF_(f),(Sfulong_t)(v)))
345 #define __sf_putm(f,v,m) (_sfputm(_SF_(f),(Sfulong_t)(v),(Sfulong_t)(m)))
346
347 #define __sf_putc(f,c) (_SF_(f)->_next >= _SF_(f)->_endw ? \
348 _sfflsbuf(_SF_(f),(int)((unsigned char)(c))) : \
349 (int)(*_SF_(f)->_next++ = (unsigned char)(c)) )
350 #define __sf_getc(f) (_SF_(f)->_next >= _SF_(f)->_endr ? _sffilbuf(_SF_(f),0) : \
351 (int)(*_SF_(f)->_next++) )
352
353 #define __sf_dlen(v) (_sfdlen((Sfdouble_t)(v)) )
354 #define __sf_llen(v) (_sfllen((Sflong_t)(v)) )
355 #define __sf_ulen(v) ((Sfulong_t)(v) < SF_U1 ? 1 : (Sfulong_t)(v) < SF_U2 ? 2 : \
356 (Sfulong_t)(v) < SF_U3 ? 3 : (Sfulong_t)(v) < SF_U4 ? 4 : 5)
357
358 #define __sf_fileno(f) (_SF_(f)->_file)
359 #define __sf_eof(f) (_SF_(f)->_flags&SF_EOF)
360 #define __sf_error(f) (_SF_(f)->_flags&SF_ERROR)
361 #define __sf_clrerr(f) (_SF_(f)->_flags &= ~(SF_ERROR|SF_EOF))
362 #define __sf_stacked(f) (_SF_(f)->_push != (Sfio_t*)0)
363 #define __sf_value(f) (_SF_(f)->_val)
364 #define __sf_slen() (_Sfi)
365 #define __sf_maxr(n,s) ((s)?((_Sfi=_Sfmaxr),(_Sfmaxr=(n)),_Sfi):_Sfmaxr)
366
367 #if defined(__INLINE__) && !_BLD_sfio
368
sfputd(Sfio_t * f,Sfdouble_t v)369 __INLINE__ int sfputd(Sfio_t* f, Sfdouble_t v) { return __sf_putd(f,v); }
sfputl(Sfio_t * f,Sflong_t v)370 __INLINE__ int sfputl(Sfio_t* f, Sflong_t v) { return __sf_putl(f,v); }
sfputu(Sfio_t * f,Sfulong_t v)371 __INLINE__ int sfputu(Sfio_t* f, Sfulong_t v) { return __sf_putu(f,v); }
sfputm(Sfio_t * f,Sfulong_t v,Sfulong_t m)372 __INLINE__ int sfputm(Sfio_t* f, Sfulong_t v, Sfulong_t m)
373 { return __sf_putm(f,v,m); }
374
sfputc(Sfio_t * f,int c)375 __INLINE__ int sfputc(Sfio_t* f, int c) { return __sf_putc(f,c); }
sfgetc(Sfio_t * f)376 __INLINE__ int sfgetc(Sfio_t* f) { return __sf_getc(f); }
377
sfdlen(Sfdouble_t v)378 __INLINE__ int sfdlen(Sfdouble_t v) { return __sf_dlen(v); }
sfllen(Sflong_t v)379 __INLINE__ int sfllen(Sflong_t v) { return __sf_llen(v); }
sfulen(Sfulong_t v)380 __INLINE__ int sfulen(Sfulong_t v) { return __sf_ulen(v); }
381
sffileno(Sfio_t * f)382 __INLINE__ int sffileno(Sfio_t* f) { return __sf_fileno(f); }
sfeof(Sfio_t * f)383 __INLINE__ int sfeof(Sfio_t* f) { return __sf_eof(f); }
sferror(Sfio_t * f)384 __INLINE__ int sferror(Sfio_t* f) { return __sf_error(f); }
sfclrerr(Sfio_t * f)385 __INLINE__ int sfclrerr(Sfio_t* f) { return __sf_clrerr(f); }
sfstacked(Sfio_t * f)386 __INLINE__ int sfstacked(Sfio_t* f) { return __sf_stacked(f); }
sfvalue(Sfio_t * f)387 __INLINE__ ssize_t sfvalue(Sfio_t* f) { return __sf_value(f); }
sfslen()388 __INLINE__ ssize_t sfslen() { return __sf_slen(); }
sfmaxr(ssize_t n,int s)389 __INLINE__ ssize_t sfmaxr(ssize_t n, int s) { return __sf_maxr(n,s); }
390
391 #else
392
393 #define sfputd(f,v) ( __sf_putd((f),(v)) )
394 #define sfputl(f,v) ( __sf_putl((f),(v)) )
395 #define sfputu(f,v) ( __sf_putu((f),(v)) )
396 #define sfputm(f,v,m) ( __sf_putm((f),(v),(m)) )
397
398 #define sfputc(f,c) ( __sf_putc((f),(c)) )
399 #define sfgetc(f) ( __sf_getc(f) )
400
401 #define sfdlen(v) ( __sf_dlen(v) )
402 #define sfllen(v) ( __sf_llen(v) )
403 #define sfulen(v) ( __sf_ulen(v) )
404
405 #define sffileno(f) ( __sf_fileno(f) )
406 #define sfeof(f) ( __sf_eof(f) )
407 #define sferror(f) ( __sf_error(f) )
408 #define sfclrerr(f) ( __sf_clrerr(f) )
409 #define sfstacked(f) ( __sf_stacked(f) )
410 #define sfvalue(f) ( __sf_value(f) )
411 #define sfslen() ( __sf_slen() )
412 #define sfmaxr(n,s) ( __sf_maxr(n,s) )
413
414 #endif /*__INLINE__*/
415
416 #ifndef _SFSTR_H /* GSF's string manipulation stuff */
417 #define _SFSTR_H 1
418
419 #define sfstropen() sfnew(0, 0, -1, -1, SF_READ|SF_WRITE|SF_STRING)
420 #define sfstrclose(f) sfclose(f)
421
422 #define sfstrseek(f,p,m) \
423 ( (m) == SEEK_SET ? \
424 (((p) < 0 || (p) > (f)->_size) ? (char*)0 : \
425 (char*)((f)->_next = (f)->_data+(p)) ) \
426 : (m) == SEEK_CUR ? \
427 ((f)->_next += (p), \
428 (((f)->_next < (f)->_data || (f)->_next > (f)->_data+(f)->_size) ? \
429 ((f)->_next -= (p), (char*)0) : (char*)(f)->_next ) ) \
430 : (m) == SEEK_END ? \
431 ( ((p) > 0 || (f)->_size < -(p)) ? (char*)0 : \
432 (char*)((f)->_next = (f)->_data+(f)->_size+(p)) ) \
433 : (char*)0 \
434 )
435
436 #define sfstrsize(f) ((f)->_size)
437 #define sfstrtell(f) ((f)->_next - (f)->_data)
438 #define sfstrpend(f) ((f)->_size - sfstrtell())
439 #define sfstrbase(f) ((char*)(f)->_data)
440
441 #define sfstruse(f) \
442 (sfputc((f),0) < 0 ? (char*)0 : (char*)((f)->_next = (f)->_data) \
443 )
444
445 #define sfstrrsrv(f,n) \
446 (sfreserve((f),(n),SF_WRITE|SF_LOCKR), sfwrite((f),(f)->_next,0), \
447 ((f)->_next+(n) <= (f)->_data+(f)->_size ? (char*)(f)->_next : (char*)0) \
448 )
449
450 #define sfstrbuf(f,b,n,m) \
451 (sfsetbuf((f),(b),(n)), ((f)->_flags |= (m) ? SF_MALLOC : 0), \
452 ((f)->_data == (unsigned char*)(b) ? 0 : -1) \
453 )
454
455 #endif /* _SFSTR_H */
456
457 #endif /* _SFIO_H */
458