OLE::Storage_Lite(3pm)

NAME
OLE::Storage_Lite - Simple Class for OLE document interface.

SYNOPSIS
    use OLE::Storage_Lite;

    # Initialize.

    # From a file
    my $oOl = OLE::Storage_Lite->new("some.xls");

    # From a filehandle object
    use IO::File;
    my $oIo = new IO::File;
    $oIo->open("<iofile.xls");
    binmode($oIo);
    my $oOl = OLE::Storage_Lite->new($oFile);

    # Read data
    my $oPps = $oOl->getPpsTree(1);

    # Save Data
    # To a File
    $oPps->save("kaba.xls"); #kaba.xls
    $oPps->save('-');        #STDOUT

    # To a filehandle object
    my $oIo = new IO::File;
    $oIo->open(">iofile.xls");
    bimode($oIo);
    $oPps->save($oIo);

DESCRIPTION
OLE::Storage_Lite allows you to read and write an OLE structured file.

OLE::Storage_Lite::PPS is a class representing PPS. OLE::Storage_Lite::PPS::Root, OLE::Storage_Lite::PPS::File and OLE::Storage_Lite::PPS::Dir are subclasses of OLE::Storage_Lite::PPS.

  new()
Constructor.

    $oOle = OLE::Storage_Lite->new($sFile);

Creates a OLE::Storage_Lite object for $sFile. $sFile must be a correct file name.

The "new()" constructor also accepts a valid filehandle. Remember to "binmode()" the filehandle first.

  getPpsTree()
    $oPpsRoot = $oOle->getPpsTree([$bData]);

Returns PPS as an OLE::Storage_Lite::PPS::Root object. Other PPS objects will be included as its children.

If $bData is true, the objects will have data in the file.

  getPpsSearch()
    $oPpsRoot = $oOle->getPpsTree($raName [, $bData][, $iCase] );

Returns PPSs as OLE::Storage_Lite::PPS objects that has the name specified in $raName array.

If $bData is true, the objects will have data in the file. If $iCase is true, search is case insensitive.

  getNthPps()
    $oPpsRoot = $oOle->getNthPps($iNth [, $bData]);

Returns PPS as "OLE::Storage_Lite::PPS" object specified number $iNth.

If $bData is true, the objects will have data in the file.

  Asc2Ucs()
    $sUcs2 = OLE::Storage_Lite::Asc2Ucs($sAsc>);

Utility function. Just adds 0x00 after every characters in $sAsc.

  Ucs2Asc()
    $sAsc = OLE::Storage_Lite::Ucs2Asc($sUcs2);

Utility function. Just deletes 0x00 after words in $sUcs.

OLE::Storage_Lite::PPS
OLE::Storage_Lite::PPS has these properties:

No  Order number in saving.

Name
    Its name in UCS2 (a.k.a Unicode).

Type
    Its type (1:Dir, 2:File (Data), 5: Root)

PrevPps
    Previous pps (as No)

NextPps
    Next pps (as No)

DirPps
    Dir pps (as No).

Time1st
    Timestamp 1st in array ref as similar format of localtime.

Time2nd
    Timestamp 2nd in array ref as similar format of localtime.

StartBlock
    Start block number

Size
    Size of the pps

Data
    Its data

Child
    Its child PPSs in array ref

OLE::Storage_Lite::PPS::Root
OLE::Storage_Lite::PPS::Root has 2 methods.

  new()
    $oRoot = OLE::Storage_Lite::PPS::Root->new(
                    $raTime1st,
                    $raTime2nd,
                    $raChild);

Constructor.

$raTime1st, $raTime2nd are array refs with ($iSec, $iMin, $iHour, $iDay, $iMon, $iYear). $iSec means seconds, $iMin means minutes. $iHour means hours. $iDay means day. $iMon is month -1. $iYear is year - 1900.

$raChild is a array ref of children PPSs.

  save()
    $oRoot = $oRoot>->save(
                    $sFile,
                    $bNoAs);

Saves information into $sFile. If $sFile is '-', this will use STDOUT.

The "new()" constructor also accepts a valid filehandle. Remember to "binmode()" the filehandle first.

If $bNoAs is defined, this function will use the No of PPSs for saving order. If $bNoAs is undefined, this will calculate PPS saving order.

OLE::Storage_Lite::PPS::Dir
OLE::Storage_Lite::PPS::Dir has 1 method.

  new()
    $oRoot = OLE::Storage_Lite::PPS::Dir->new(
                    $sName,
                  [, $raTime1st]
                  [, $raTime2nd]
                  [, $raChild>]);

Constructor.

$sName is a name of the PPS.

$raTime1st, $raTime2nd is a array ref as ($iSec, $iMin, $iHour, $iDay, $iMon, $iYear). $iSec means seconds, $iMin means minutes. $iHour means hours. $iDay means day. $iMon is month -1. $iYear is year - 1900.

$raChild is a array ref of children PPSs.

OLE::Storage_Lite::PPS::File
OLE::Storage_Lite::PPS::File has 3 method.

  new
    $oRoot = OLE::Storage_Lite::PPS::File->new($sName, $sData);

$sName is name of the PPS.

$sData is data of the PPS.

  newFile()
    $oRoot = OLE::Storage_Lite::PPS::File->newFile($sName, $sFile);

This function makes to use file handle for getting and storing data.

$sName is name of the PPS.

If $sFile is scalar, it assumes that is a filename. If $sFile is an IO::Handle object, it uses that specified handle. If $sFile is undef or '', it uses temporary file.

CAUTION: Take care $sFile will be updated by "append" method. So if you want to use IO::Handle and append a data to it, you should open the handle with "r+".

  append()
    $oRoot = $oPps->append($sData);

appends specified data to that PPS.

$sData is appending data for that PPS.

CAUTION
A saved file with VBA (a.k.a Macros) by this module will not work correctly. However modules can get the same information from the file, the file occurs a error in application(Word, Excel ...).

DEPRECATED FEATURES
Older version of "OLE::Storage_Lite" autovivified a scalar ref in the "new()" constructors into a scalar filehandle. This functionality is still there for backwards compatibility but it is highly recommended that you do not use it. Instead create a filehandle (scalar or otherwise) and pass that in.

COPYRIGHT
The OLE::Storage_Lite module is Copyright (c) 2000,2001 Kawai Takanori. Japan. All rights reserved.

You may distribute under the terms of either the GNU General Public License or the Artistic License, as specified in the Perl README file.

ACKNOWLEDGEMENTS
First of all, I would like to acknowledge to Martin Schwartz and his module OLE::Storage.

AUTHOR
Kawai Takanori kwitknr@cpan.org

This module is currently maintained by John McNamara jmcnamara@cpan.org

SEE ALSO
OLE::Storage

Documentation for the OLE Compound document has been released by Microsoft under the Open Specification Promise. See http://www.microsoft.com/interop/docs/supportingtechnologies.mspx

The Digital Imaging Group have also detailed the OLE format in the JPEG2000 specification: see Appendix A of http://www.i3a.org/pdf/wg1n1017.pdf