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GitHub Repository: att/ast
 Path: blob/master/src/lib/libast/include/recfmt.h
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/***********************************************************************

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*                                                                      *

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*               This software is part of the ast package               *

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*          Copyright (c) 1985-2011 AT&T Intellectual Property          *

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*                      and is licensed under the                       *

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*                 Eclipse Public License, Version 1.0                  *

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*                    by AT&T Intellectual Property                     *

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*                                                                      *

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*                A copy of the License is available at                 *

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*          http://www.eclipse.org/org/documents/epl-v10.html           *

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*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *

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*                                                                      *

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*              Information and Software Systems Research               *

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*                            AT&T Research                             *

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*                           Florham Park NJ                            *

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*                                                                      *

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*                 Glenn Fowler <[email protected]>                  *

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*                  David Korn <[email protected]>                   *

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*                   Phong Vo <[email protected]>                    *

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*                                                                      *

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***********************************************************************/

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#pragma prototyped

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/*

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 * Glenn Fowler

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 * AT&T Research

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 *

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 * record format interface

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 */

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#ifndef _RECFMT_H

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#define _RECFMT_H		1

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#include <ast.h>

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typedef uint32_t Recfmt_t;

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#define REC_delimited		0

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#define REC_fixed		1

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#define REC_variable		2

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#define REC_method		14

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#define REC_none		15

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#define REC_M_path		0

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#define REC_M_data		1

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#define RECTYPE(f)		(((f)>>28)&((1<<4)-1))

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#define REC_D_TYPE(d)		((REC_delimited<<28)|((d)&((1<<8)-1)))

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#define REC_D_DELIMITER(f)	((f)&((1<<8)-1))

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#define REC_F_TYPE(s)		((REC_fixed<<28)|((s)&((1<<28)-1)))

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#define REC_F_SIZE(f)		((f)&((1<<28)-1))

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#define REC_U_TYPE(t,a)		(((t)<<28)|((a)&((1<<28)-1)))

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#define REC_U_ATTRIBUTES(f)	((f)&~((1<<28)-1))

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#define REC_V_TYPE(h,o,z,l,i)	((REC_variable<<28)|((h)<<23)|((o)<<19)|(((z)-1)<<18)|((l)<<17)|((i)<<16))

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#define REC_V_RECORD(f,s)	(((f)&(((1<<16)-1)<<16))|(s))

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#define REC_V_HEADER(f)		(((f)>>23)&((1<<5)-1))

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#define REC_V_OFFSET(f)		(((f)>>19)&((1<<4)-1))

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#define REC_V_LENGTH(f)		((((f)>>18)&1)+1)

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#define REC_V_LITTLE(f)		(((f)>>17)&1)

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#define REC_V_INCLUSIVE(f)	(((f)>>16)&1)

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#define REC_V_SIZE(f)		((f)&((1<<16)-1))

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#define REC_V_ATTRIBUTES(f)	((f)&~((1<<16)-1))

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#define REC_M_TYPE(i)		((REC_method<<28)|(i))

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#define REC_M_INDEX(f)		((f)&((1<<28)-1))

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#define REC_N_TYPE()		0xffffffff

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#if _BLD_ast && defined(__EXPORT__)

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#define extern		__EXPORT__

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#endif

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extern char*		fmtrec(Recfmt_t, int);

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extern Recfmt_t		recfmt(const void*, size_t, off_t);

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extern Recfmt_t		recstr(const char*, char**);

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extern ssize_t		reclen(Recfmt_t, const void*, size_t);

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#undef	extern

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#endif

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