usr/src/lib/libast/common/include/sfdisc.h

   1 /***********************************************************************
   2 *                                                                      *
   3 *               This software is part of the ast package               *
   4 *          Copyright (c) 1985-2010 AT&T Intellectual Property          *
   5 *                      and is licensed under the                       *
   6 *                  Common Public License, Version 1.0                  *
   7 *                    by AT&T Intellectual Property                     *
   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