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Spreadsheet::Read.3pm

NAME

  Spreadsheet::Read - Read the data from a spreadsheet
 
 

SYNOPSIS

  use Spreadsheet::Read;
  my $ref = ReadData ("test.csv", sep => ";");
  my $ref = ReadData ("test.sxc");
  my $ref = ReadData ("test.ods");
  my $ref = ReadData ("test.xls");
  my $ref = ReadData ("test.xlsx");
  my $ref = ReadData ($fh, parser => "xls");
 
  my $a3 = $ref->[1]{A3}, "\n"; # content of field A3 of sheet 1
 
 

DESCRIPTION

Spreadsheet::Read tries to transparently read *any* spreadsheet and return its content in a universal manner independent of the parsing module that does the actual spreadsheet scanning.

For OpenOffice this module uses Spreadsheet::ReadSXC

For Microsoft Excel this module uses Spreadsheet::ParseExcel or Spreadsheet::XLSX

For CSV this module uses Text::CSV_XS (0.29 or up preferred) or Text::CSV_PP (1.05 or up required).

For SquirrelCalc there is a very simplistic built-in parser

Data structure

The data is returned as an array reference:

   $ref = [
         # Entry 0 is the overall control hash
         { sheets  => 2,
           sheet   => {
             "Sheet 1"   => 1,
             "Sheet 2"   => 2,
             },
           type    => "xls",
           parser  => "Spreadsheet::ParseExcel",
           version => 0.26,
           },
         # Entry 1 is the first sheet
         { label  => "Sheet 1",
           maxrow => 2,
           maxcol => 4,
           cell   => [ undef,
             [ undef, 1 ],
             [ undef, undef, undef, undef, undef, "Nugget" ],
             ],
           A1     => 1,
           B5     => "Nugget",
           },
         # Entry 2 is the second sheet
         { label => "Sheet 2",
           :
         :
 
 

To keep as close contact to spreadsheet users, row and column 1 have index 1 too in the "cell" element of the sheet hash, so cell ``A1'' is the same as "cell" [1, 1] (column first). To switch between the two, there are two helper functions available: "cell2cr ()" and "cr2cell ()".

The "cell" hash entry contains unformatted data, while the hash entries with the traditional labels contain the formatted values (if applicable).

The control hash (the first entry in the returned array ref), contains some spreadsheet meta-data. The entry "sheet" is there to be able to find the sheets when accessing them by name:

   my %sheet2 = %{$ref->[$ref->[0]{sheet}{"Sheet 2"}]};
 
 

Functions

my $ref = ReadData ($source [, option => value [, ... ]]);

my $ref = ReadData ("file.csv", sep => ',', quote => '"');

my $ref = ReadData ("file.xls", dtfmt => "yyyy-mm-dd");

my $ref = ReadData ("file.ods");

my $ref = ReadData ("file.sxc");

my $ref = ReadData ("content.xml");

my $ref = ReadData ($content);

my $ref = ReadData ($fh, parser => "xls");

Tries to convert the given file, string, or stream to the data structure described above.

Processing Excel data from a stream or content is supported through a File::Temp temporary file or IO::Scalar when available.

ReadSXC does preserve sheet order as of version 0.20.

Currently supported options are:

parser

Force the data to be parsed by a specific format. Possible values are "csv", "prl" (or "perl"), "sc" (or "squirelcalc"), "sxc" (or "oo", "ods", "openoffice") "xls" (or "excel"), and "xlsx" (or "excel2007").

When parsing streams, instead of files, it is highly recommended to pass this option.

cells

Control the generation of named cells (``A1'' etc). Default is true.

rc

Control the generation of the {cell}[c][r] entries. Default is true.

attr

Control the generation of the {attr}[c][r] entries. Default is false. See ``Cell Attributes'' below.

clip

If set, "ReadData ()" will remove all trailing lines and columns per sheet that have no visual data. This option is only valid if "cells" is true. The default value is true if "cells" is true, and false otherwise.

strip

If set, "ReadData ()" will remove trailing- and/or leading-whitespace from every field.

   strip  leading  strailing
   -----  -------  ---------
     0      n/a      n/a
     1     strip     n/a
     2      n/a     strip
     3     strip    strip
 
 

sep

Set separator for CSV. Default is comma ",".

quote

Set quote character for CSV. Default is """.

dtfmt

Set the format for M$Excel date fields that are set to use the default date format. The default format in Excel is 'm-d-yy', which is both not year 2000 safe, nor very useful. The default is now 'yyyy-mm-dd', which is more ISO-like.

Note that date formatting in M$Excel is not reliable at all, as it will store/replace/change the date field separator in already stored formats if you change your locale settings. So the above mentioned default can be either ``m-d-yy'' OR ``m/d/yy'' depending on what that specific character happened to be at the time the user saved the file.

debug

Enable some diagnostic messages to STDERR.

The value determines how much diagnostics are dumped (using Data::Dumper). A value of 9 and higher will dump the entire structure from the backend parser.

Using CSV

In case of CSV parsing, "ReadData ()" will use the first line of the file to auto-detect the separation character if the first argument is a file and both "sep" and "quote" are not passed as attributes. Text::CSV_XS (or Text::CSV_PP) is able to automatically detect and use "\r" line endings).

CSV can parse streams too, but be sure to pass "sep" and/or "quote" if these do not match the default "," and """.

Functions

my $cell = cr2cell (col, row)

"cr2cell ()" converts a "(column, row)" pair (1 based) to the traditional cell notation:

   my $cell = cr2cell ( 4, 14); # $cell now "D14"
   my $cell = cr2cell (28,  4); # $cell now "AB4"
 
 

my ($col, $row) = cell2cr ($cell)

"cell2cr ()" converts traditional cell notation to a "(column, row)" pair (1 based):

   my ($col, $row) = cell2cr ("D14"); # returns ( 4, 14)
   my ($col, $row) = cell2cr ("AB4"); # returns (28,  4)
 
 

my @row = row ($ref, $row)

my @row = Spreadsheet::Read::row ($ss->[1], 3)

Get full row of formatted values (like "$ss->{A3} .. $ss->{G3}")

Note that the indexes in the returned list are 0-based.

"row ()" is not imported by default, so either specify it in the use argument list, or call it fully qualified.

my @row = cellrow ($ref, $row)

my @row = Spreadsheet::Read::cellrow ($ss->[1], 3)

Get full row of unformatted values (like "$ss->{cell}[1][3] .. $ss->{cell}[7][3]")

Note that the indexes in the returned list are 0-based.

"cellrow ()" is not imported by default, so either specify it in the use argument list, or call it fully qualified.

my @rows = rows ($ref)

my @rows = Spreadsheet::Read::rows ($ss->[1])

Convert "{cell}"'s "[column][row]" to a "[row][column]" list.

Note that the indexes in the returned list are 0-based, where the index in the "{cell}" entry is 1-based.

"rows ()" is not imported by default, so either specify it in the use argument list, or call it fully qualified.

parses ($format)

Spreadsheet::Read::parses ("CSV")

"parses ()" returns Spreadsheet::Read's capability to parse the required format.

"parses ()" is not imported by default, so either specify it in the use argument list, or call it fully qualified.

my $rs_version = Version ()

my $v = Spreadsheet::Read::Version ()

Returns the current version of Spreadsheet::Read.

"Version ()" is not imported by default, so either specify it in the use argument list, or call it fully qualified.

Cell Attributes

If the constructor was called with "attr" having a true value, effort is made to analyse and store field attributes like this:

     { label  => "Sheet 1",
       maxrow => 5,
       maxcol => 2,
       cell   => [ undef,
         [ undef, 1 ],
         [ undef, undef, undef, undef, undef, "Nugget" ],
         ],
       attr   => [ undef,
         [ undef, {
           type    => "numeric",
           fgcolor => "#ff0000",
           bgcolor => undef,
           font    => "Arial",
           size    => undef,
           format  => "## ##0.00",
           halign  => "right",
           valign  => "top",
           uline   => 0,
           bold    => 0,
           italic  => 0,
           wrap    => 0,
           merged  => 0,
           hidden  => 0,
           locked  => 0,
           enc     => "utf-8",
           }, ]
         [ undef, undef, undef, undef, undef, {
           type    => "text",
           fgcolor => "#e2e2e2",
           bgcolor => undef,
           font    => "Letter Gothic",
           size    => 15,
           format  => undef,
           halign  => "left",
           valign  => "top",
           uline   => 0,
           bold    => 0,
           italic  => 0,
           wrap    => 0,
           merged  => 0,
           hidden  => 0,
           locked  => 0,
           enc     => "iso8859-1",
           }, ]
       A1     => 1,
       B5     => "Nugget",
       },
 
 

This has now been partially implemented, mainly for Excel, as the other parsers do not (yet) support all of that. YMMV.

TODO

Options

Module Options

New Spreadsheet::Read options are bound to happen. I'm thinking of an option that disables the reading of the data entirely to speed up an index request (how many sheets/fields/columns). See "xlscat -i".

Parser options

Try to transparently support as many options as the encapsulated modules support regarding (un)formatted values, (date) formats, hidden columns rows or fields etc. These could be implemented like "attr" above but names "meta", or just be new values in the "attr" hashes.

Other spreadsheet formats

I consider adding any spreadsheet interface that offers a usable API.

OO-ify

Consider making the ref an object, though I currently don't see the big advantage (yet). Maybe I'll make it so that it is a hybrid functional / OO interface.

SEE ALSO

Text::CSV_XS, Text::CSV_PP

http://search.cpan.org/dist/Text-CSV_XS , http://search.cpan.org/dist/Text-CSV_PP , and http://search.cpan.org/dist/Text-CSV .

Text::CSV is a wrapper over Text::CSV_XS (the fast XS version) and/or Text::CSV_PP (the pure perl version)

Spreadsheet::ParseExcel

http://search.cpan.org/dist/Spreadsheet-ParseExcel

Spreadsheet::XLSX

http://search.cpan.org/dist/Spreadsheet-XLSX

Spreadsheet::ReadSXC

http://search.cpan.org/dist/Spreadsheet-ReadSXC

Spreadsheet::BasicRead

http://search.cpan.org/dist/Spreadsheet-BasicRead for xlscat likewise functionality (Excel only)

Spreadsheet::ConvertAA

http://search.cpan.org/dist/Spreadsheet-ConvertAA for an alternative set of cell2cr () / cr2cell () pair

Spreadsheet::Perl

http://search.cpan.org/dist/Spreadsheet-Perl offers a Pure Perl implementation of a spreadsheet engine. Users that want this format to be supported in Spreadsheet::Read are hereby motivated to offer patches. It's not high on my todo-list.

xls2csv

http://search.cpan.org/dist/xls2csv offers an alternative for my "xlscat -c", in the xls2csv tool, but this tool focusses on character encoding transparency, and requires some other modules.

AUTHOR

H.Merijn Brand, <h.m.brand@xs4all.nl>

COPYRIGHT AND LICENSE

Copyright (C) 2005-2010 H.Merijn Brand

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