1/***********************************************************************
2*                                                                      *
3*               This software is part of the ast package               *
4*          Copyright (c) 1985-2011 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#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
46typedef int (*Sf_key_lookup_t)(void*, Sffmt_t*, const char*, char**, Sflong_t*);
47typedef char* (*Sf_key_convert_t)(void*, Sffmt_t*, const char*, char*, Sflong_t);
48
49extern int		sfkeyprintf(Sfio_t*, void*, const char*, Sf_key_lookup_t, Sf_key_convert_t);
50extern int		sfkeyprintf_20000308(Sfio_t*, void*, const char*, Sf_key_lookup_t, Sf_key_convert_t);
51
52/*
53 * pure sfio read and/or write disciplines
54 */
55
56extern int		sfdcdio(Sfio_t*, size_t);
57extern int		sfdcdos(Sfio_t*);
58extern int		sfdcfilter(Sfio_t*, const char*);
59extern int		sfdcmore(Sfio_t*, const char*, int, int);
60extern int		sfdcprefix(Sfio_t*, const char*);
61extern int		sfdcseekable(Sfio_t*);
62extern int		sfdcslow(Sfio_t*);
63extern int		sfdctee(Sfio_t*, Sfio_t*);
64extern int		sfdcunion(Sfio_t*, Sfio_t**, int);
65
66extern Sfio_t*		sfdcsubstream(Sfio_t*, Sfio_t*, Sfoff_t, Sfoff_t);
67
68#undef	extern
69
70#endif
71