XFIN() Function - File Information

Syntax

XFIN(channelno{,ERR=lineref})

The XFIN() function is identical to the FIN() function except for the following:

The XFIN() function returns an 8-byte file length:

Bytes	Contents
1,8	Current file length in bytes (not valid for all file types).

Bytes	Contents
61,4	Default KNUM value.
65,12	$00$'s
77,4	Number of active keys in the file.
81,4	$00$'s
85,1	Default KNUM value MOD 256.
86	Key definition data.

The key definition information is an unlimited number of 20-byte entries using the following fields for each entry:

Bytes	Contents
1,4	Key number.
5,4	Field in record to use, or $00000000$ for no fielding.
9,4	Offset in field/record (0 based).
13,4	Length of this segment.
17,1	Segment modification bits: $01$ - descending segment $02$ - unique flag $04$ - Business Math flag $08$ - ordered numeric flag $10$ - In BBj 12.0 and higher, case insensitive flag
18,3	$000000$

Following the last segment definition, the next key segment description key number must contain an $FF$ to indicate the end of the next segment list.