NAME

BTRIEVE::Native - Interface to Btrieve ISAM file manager

SYNOPSIS

use BTRIEVE::Native();

$B = \&BTRIEVE::Native::Call;

$p = "\0" x 128;
$d = "\0";
$l = 0;
$k = 'TEST.BTR';

$B->( 0, $p, $d, $l, $k, 0 );

$l = 13;
$d = "\0" x $l;
$k = "\0" x 255;

$\ = "\n";
$, = ':';
print unpack 'A3A10', $d while !$B->( 24, $p, $d, $l, $k, 0 );

DESCRIPTION

This is a simple wrapper for the Btrieve single function API.

Btrieve Functions

The Call() function of this module allows you to make Btrieve calls:

$Status = BTRIEVE::Native::Call( ... );

It's a wrapper for Btrieve's BTRV (or BTRCALL) function. Btrieve's BTRVID function is currently not supported.

Btrieve Function Parameters

The Call() function expects the following parameters:

Operation Code
Position Block
Data Buffer
Data Buffer Length
Key Buffer
Key Number

Every Call() returns a numeric status code which indicates success or a specific error.

Btrieve Operations

The Operation Code parameter of the Call() function is a numeric code that determines the Btrieve operation, e.g.:

14  Create
 0  Open
 1  Close

33  Step First
34  Step Last
24  Step Next
35  Step Previous

12  Get First
13  Get Last
 5  Get Equal
 8  Get Greater
 6  Get Next
 7  Get Previous

Consult the Btrieve API reference manual for detailed information. At the time this was written, Pervasive Software Inc. made available the online documentation at

http://www.pervasive.com/library/prog_api/BtrIntro.html

AUTHOR

Steffen Goeldner <sgoeldner@cpan.org>

COPYRIGHT

Copyright (c) 2003, 2014 Steffen Goeldner. All rights reserved.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO

perl.