1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1985-2007 AT&T Knowledge Ventures * 5 * and is licensed under the * 6 * Common Public License, Version 1.0 * 7 * by AT&T Knowledge Ventures * 8 * * 9 * A copy of the License is available at * 10 * http://www.opensource.org/licenses/cpl1.0.txt * 11 * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 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 #pragma prototyped 23 /* 24 * AT&T Research 25 * 26 * sfio discipline interface definitions 27 */ 28 29 #ifndef _SFDISC_H 30 #define _SFDISC_H 31 32 #include <ast.h> 33 34 #define SFDCEVENT(a,b,n) ((((a)-'A'+1)<<11)^(((b)-'A'+1)<<6)^(n)) 35 36 #if _BLD_ast && defined(__EXPORT__) 37 #define extern __EXPORT__ 38 #endif 39 40 #define SFSK_DISCARD SFDCEVENT('S','K',1) 41 42 /* 43 * %(...) printf support 44 */ 45 46 typedef int (*Sf_key_lookup_t)(void*, Sffmt_t*, const char*, char**, Sflong_t*); 47 typedef char* (*Sf_key_convert_t)(void*, Sffmt_t*, const char*, char*, Sflong_t); 48 49 extern int sfkeyprintf(Sfio_t*, void*, const char*, Sf_key_lookup_t, Sf_key_convert_t); 50 #define sfkeyprintf sfkeyprintf_20000308 /* Sffmt_t* callback args */ 51 extern int sfkeyprintf(Sfio_t*, void*, const char*, Sf_key_lookup_t, Sf_key_convert_t); 52 53 /* 54 * pure sfio read and/or write disciplines 55 */ 56 57 extern int sfdcdio(Sfio_t*, size_t); 58 extern int sfdcdos(Sfio_t*); 59 extern int sfdcfilter(Sfio_t*, const char*); 60 extern int sfdcmore(Sfio_t*, const char*, int, int); 61 extern int sfdcprefix(Sfio_t*, const char*); 62 extern int sfdcseekable(Sfio_t*); 63 extern int sfdcslow(Sfio_t*); 64 extern int sfdctee(Sfio_t*, Sfio_t*); 65 extern int sfdcunion(Sfio_t*, Sfio_t**, int); 66 67 extern Sfio_t* sfdcsubstream(Sfio_t*, Sfio_t*, Sfoff_t, Sfoff_t); 68 69 #undef extern 70 71 #endif 72