/spreadsheet-parsexlsx

parse XLSX files

Primary LanguagePerl

NAME

Spreadsheet::ParseXLSX - parse XLSX files

VERSION

version 0.33

SYNOPSIS

use Spreadsheet::ParseXLSX;

my $parser = Spreadsheet::ParseXLSX->new;
my $workbook = $parser->parse("file.xlsx");
# see Spreadsheet::ParseExcel for further documentation

DESCRIPTION

This module is an adaptor for Spreadsheet::ParseExcel that reads XLSX files. For documentation about the various data that you can retrieve from these classes, please see Spreadsheet::ParseExcel, Spreadsheet::ParseExcel::Workbook, Spreadsheet::ParseExcel::Worksheet, and Spreadsheet::ParseExcel::Cell.

METHODS

new(%opts)

Returns a new parser instance. Takes a hash of parameters:

  • Password

    Password to use for decrypting encrypted files.

parse($file, $formatter)

Parses an XLSX file. Parsing errors throw an exception. $file can be either a filename or an open filehandle. Returns a Spreadsheet::ParseExcel::Workbook instance containing the parsed data. The $formatter argument is an optional formatter class as described in Spreadsheet::ParseExcel.

INCOMPATIBILITIES

This module returns data using classes from Spreadsheet::ParseExcel, so for the most part, it should just be a drop-in replacement. That said, there are a couple areas where the data returned is intentionally different:

  • Colors

    In Spreadsheet::ParseExcel, colors are represented by integers which index into the color table, and you have to use Spreadsheet::ParseExcel->ColorIdxToRGB in order to get the actual value out. In Spreadsheet::ParseXLSX, while the color table still exists, cells are also allowed to specify their color directly rather than going through the color table. In order to avoid confusion, I normalize all color values in Spreadsheet::ParseXLSX to their string RGB format ("#0088ff"). This affects the Fill, BdrColor, and BdrDiag properties of formats, and the Color property of fonts. Note that the default color is represented by undef (the same thing that ColorIdxToRGB would return).

  • Formulas

    Spreadsheet::ParseExcel doesn't support formulas. Spreadsheet::ParseXLSX provides basic formula support by returning the text of the formula as part of the cell data. You can access it via $cell->{Formula}. Note that the restriction still holds that formula cell values aren't available unless they were explicitly provided when the spreadsheet was written.

BUGS

  • Large spreadsheets may cause segfaults on perl 5.14 and earlier

    This module internally uses XML::Twig, which makes it potentially subject to Bug #71636 for XML-Twig: Segfault with medium-sized document on perl versions 5.14 and below (the underlying bug with perl weak references was fixed in perl 5.15.5). The larger and more complex the spreadsheet, the more likely to be affected, but the actual size at which it segfaults is platform dependent. On a 64-bit perl with 7.6gb memory, it was seen on spreadsheets about 300mb and above. You can work around this adding XML::Twig::_set_weakrefs(0) to your code before parsing the spreadsheet, although this may have other consequences such as memory leaks.

  • Worksheets without the dimension tag are not supported

  • Intra-cell formatting is discarded

  • Shared formulas are not supported

    Shared formula support will require an actual formula parser and quite a bit of custom logic, since the only thing stored in the document is the formula for the base cell - updating the cell references in the formulas in the rest of the cells is handled by the application. Values for these cells are still handled properly.

In addition, there are still a few areas which are not yet implemented (the XLSX spec is quite large). If you run into any of those, bug reports are quite welcome.

Please report any bugs to GitHub Issues at https://github.com/MichaelDaum/spreadsheet-parsexlsx/issues.

SEE ALSO

Spreadsheet::ParseExcel: The equivalent, for XLS files.

Spreadsheet::XLSX: An older, less robust and featureful implementation.

SUPPORT

You can find this documentation for this module with the perldoc command.

perldoc Spreadsheet::ParseXLSX

You can also look for information at:

SPONSORS

Parts of this code were paid for by

AUTHOR

Jesse Luehrs doy@tozt.net

CONTRIBUTORS

COPYRIGHT AND LICENSE

This software is Copyright (c) 2024 by Jesse Luehrs.

This is free software, licensed under:

The MIT (X11) License