/******************************************************************************
*
*	Definitions for PI/open dynamic file convertor utility
*
*	Module	%M%	Version	%I% 	Date	%H%
*
*	(c) Copyright 1998 Ardent Software Inc. - All Rights Reserved
*	This is unpublished proprietary source code of Ardent Software Inc.
*	The copyright notice above does not evidence any actual or intended
*	publication of such source code.
*
*******************************************************************************
*
*	Maintenence log - insert most recent change descriptions at top
*
*	Date.... GTAR# WHO Description.........................................
*	10/14/98 23801 SAP Change copyrights. 
*	05/17/96 18433 WSM Changes to allow conversion on any platform.
*	05/13/94 14011 ALC Minor changes to reflect changes to the convertor.
*	05/12/94 13934 ALC Changes for phase 2 version of file convertor.
*	03/29/94 13509 ALC Changes due to errors in oversize record handling.
*	10/21/93 12303 ALC Initial implementation
*
******************************************************************************/


/*
 * Name segments for PI/open dynamic file manipulation
 */
#define PI_LH_MAINSUBFILE	0
#define PI_LH_OVFLSUBFILE	1

#define PI_NAME_FORMAT_MIPS	"%s/ \b%u"
#define PI_NAME_FORMAT		"%s/&$%u"
#define UV_NAME_FORMAT		"%s/%s"
 

/*
 * Constants used in file conversion
 * HASH_TYPE_CNV - Conversion factor for hash function value
 * SPLIT_OFFSET  - Difference between PI/open and uniVerse split value
 * PAGE_SZ       - PI/open File page size in bytes
 * HDR_OFFSET    - Position of header on file
 * UV_HDR        - Size of uniVerse record header in bytes.
 */
#define HASH_TYPE_CNV		18
#define SPLIT_OFFSET		1
#define PAGE_SZ			1024
#define HDR_OFFSET		0
#define UV_HDR			12


/*
 * Flags to indicate whether to read a full block or just the
 * amount of data specified when doing a get_blk() call.
 */
#define BYTES_SPECIFIED		1
#define FILL_BLOCK		0


/*
 * Type of current write block
 */
#define PRIMARY_WRTBLK		0
#define FIRST_OVFLOW_WRTBLK	1
#define	OTHER_OVFLOW_WRTBLK	2


/*
 * Position of write block in group chain for write_recblk() call
 */
#define MID_CHAIN		0
#define END_CHAIN		1


/*
 * Macro's to simplify code
 */
#define min(A,B)	((A) < (B) ? (A) : (B))


/*
 * Input block type
 */
#define	NEW_GROUP		0
#define	PRIMARY_RDBLK		1
#define	OVERFLOW_RDBLK		2
#define NEW_BREC_CHAIN		3
#define	FIRST_BIGREC_RDBLK	4
#define	BREC_CHAIN_RDBLK	5


/*
 * Byte swapping constants
 */
#define UNIX_MODE		1		/* non-byte swapped */
#define XINU_MODE		2		/* byte swapped */
#define NUXI_MODE		3		/* byte swapped */
#define TEST_XINU_MODE		0x000000ff
#define TEST_NUXI_MODE		0x00ff0000


/*
 * Read & write buffer structure
 */
typedef struct rdbuf_t rdbuf_t;
struct rdbuf_t {
	int	pg_num;
	int	rd_blktype;
	int	rd_offset;
	char	buff[PAGE_SZ * MAX_BLOCK];
};


typedef struct wrtbuf_t wrtbuf_t;
struct wrtbuf_t {
	int	pg_num;
	int	wrt_blktype;
	int	wrt_offset;
	int	prvrec_offset;
	char	buff[PAGE_SZ *MAX_BLOCK];
};


/*
 * Structure to define a big record, these are saved on file for
 * later processing of big record chains, or as preludes to displaced
 * over length records from the group chain, saved on the hold file.
 */
typedef struct rec_def_t rec_def_t;
struct rec_def_t {
	int	start_pg;
	int	idlen;
	int	datalen;
};


/*
 * Status structure for keeping track of progress whilst converting file
 * from PI/open to uniVerse dynamic format.
 */
typedef struct cnv_status_t cnv_status_t;
struct cnv_status_t {

	/*
	 * File descriptors
	 */
	FILE	*prm_rd_desc;		/* File desc of primary sf (source) */
	FILE	*ovf_rd_desc;		/* File desc of overflow sf (source) */
	FILE	*prm_wrt_desc;		/* File desc of primary sf (dest) */
	FILE	*ovf_wrt_desc;		/* File desc of overflow sf (dest) */
	FILE	*blkmap_desc;		/* File desc of page map file */
	FILE	*bigrec_desc;		/* File of big record start pages */
	FILE	*savedrec_desc;		/* File desc of saved record file */
	FILE	*setup_desc;		/* File desc of setup paragraph */

	/*
	 * Format information
	 */
	int	grpsz_pgs;		/* Basic group size in pages */
	int	grpsz_bytes;		/* Basic group size in bytes */
	int	grp_count;		/* Number of groups in file */
	int	hdr_size;		/* Size of primary header in pages */

	/*
	 * Command line options
	 */
	int	copying;		/* In situ/copying conversion */
	int	retain;			/* Retain originals after copy */
	int	dict;			/* Converting dictionary */
	int	reply_yes;		/* Assume yes reply to queries */
	char	*file_id;		/* Name of file to convert */
	char	*voc_id;		/* VOC name of file being converted */

	/*
	 * Process status information
	 */
	int	file_load;		/* File load info for new header */
	int	curr_grp;		/* Primary group being processed */
	int	wrt_prv_blk;		/* Page number of previous write blk */
	int	bigrec_offset;		/* Offset in bigrecord file */
	int	write_posn;		/* block number of next write slot */
	int	end_pg;			/* Current last page in overflow */
	int	free_end_pt;		/* Second block of data starts here */
	int	freelist;		/* Head of free block list */
};

/*  END-CODE  */