/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*      Copyright (c) 1988 AT&T */
/*        All Rights Reserved   */


/*
 * Copyright 1999, 2003 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/* inverted index definitions */

/* postings temporary file long number coding into characters */
#define BASE            95      /* 127 - ' ' */
#define PRECISION       5       /* maximum digits after converting a long */

/* inverted index access parameters */
#define INVAVAIL        0
#define INVBUSY         1
#define INVALONE        2

/* boolean set operations */
#define OR              3
#define AND             4
#define NOT             5
#define REVERSENOT      6

/* note that the entire first block is for parameters */
typedef struct  {
        long    version;        /* inverted index format version */
        long    filestat;       /* file status word  */
        long    sizeblk;        /* size of logical block in bytes */
        long    startbyte;      /* first byte of superfinger */
        long    supsize;        /* size of superfinger in bytes */
        long    cntlsize;       /* size of max cntl space (should be a */
                                /* multiple of BUFSIZ) */
        long    share;          /* flag whether to use shared memory */
} PARAM;

typedef struct {
        FILE    *invfile;       /* the inverted file ptr */
        FILE    *postfile;      /* posting file ptr */
        PARAM   param;          /* control parameters for the file */
        char    *iindex;        /* ptr to space for superindex */
        char    *logblk;        /* ptr to space for a logical block */
        long    numblk;         /* number of block presently at *logblk */
        long    keypnt;         /* number item in present block found */
        int     swap;           /* file endian mistmatch? */
} INVCONTROL;

typedef struct  {
        short   offset;         /* offset in this logical block */
        unsigned char size;     /* size of term */
        unsigned char space;    /* number of longs of growth space */
        long    post;           /* number of postings for this entry */
} ENTRY;

typedef struct {
        long    lineoffset;     /* source line database offset */
        long    fcnoffset;      /* function name database offset */
        long    fileindex : 24; /* source file name index */
        long    type : 8;       /* reference type (mark character) */
} POSTING;

extern  long    *srcoffset;     /* source file name database offsets */
extern  int     nsrcoffset;     /* number of file name database offsets */

extern void     boolclear(void);
extern POSTING  *boolfile(INVCONTROL *invcntl, long *num, int bool);
extern void     invclose(INVCONTROL *invcntl);
extern long     invfind(INVCONTROL *invcntl, char *searchterm);
extern int      invforward(INVCONTROL *invcntl);
extern int      invopen(INVCONTROL *invcntl, char *invname, char *invpost,
                    int stat);
extern int      invterm(INVCONTROL *invcntl, char *term);
extern long     invmake(char *invname, char *invpost, FILE *infile);