sfdisc.h revision 3e14f97f673e8a630f076077de35afdd43dc1587
/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2010 AT&T Intellectual Property *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.opensource.org/licenses/cpl1.0.txt *
* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* David Korn <dgk@research.att.com> *
* Phong Vo <kpv@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
/*
* AT&T Research
*
* sfio discipline interface definitions
*/
#ifndef _SFDISC_H
#define _SFDISC_H
#include <ast.h>
#define SFDCEVENT(a,b,n) ((((a)-'A'+1)<<11)^(((b)-'A'+1)<<6)^(n))
#if _BLD_ast && defined(__EXPORT__)
#define extern __EXPORT__
#endif
#define SFSK_DISCARD SFDCEVENT('S','K',1)
/*
* %(...) printf support
*/
typedef int (*Sf_key_lookup_t)(void*, Sffmt_t*, const char*, char**, Sflong_t*);
typedef char* (*Sf_key_convert_t)(void*, Sffmt_t*, const char*, char*, Sflong_t);
extern int sfkeyprintf(Sfio_t*, void*, const char*, Sf_key_lookup_t, Sf_key_convert_t);
#define sfkeyprintf sfkeyprintf_20000308 /* Sffmt_t* callback args */
extern int sfkeyprintf(Sfio_t*, void*, const char*, Sf_key_lookup_t, Sf_key_convert_t);
/*
* pure sfio read and/or write disciplines
*/
extern int sfdcdio(Sfio_t*, size_t);
extern int sfdcdos(Sfio_t*);
extern int sfdcfilter(Sfio_t*, const char*);
extern int sfdcmore(Sfio_t*, const char*, int, int);
extern int sfdcprefix(Sfio_t*, const char*);
extern int sfdcseekable(Sfio_t*);
extern int sfdcslow(Sfio_t*);
extern int sfdctee(Sfio_t*, Sfio_t*);
extern int sfdcunion(Sfio_t*, Sfio_t**, int);
extern Sfio_t* sfdcsubstream(Sfio_t*, Sfio_t*, Sfoff_t, Sfoff_t);
#undef extern
#endif