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Read(3pm) User Contributed Perl Documentation 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}, "
"; # 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 required, 0.73 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 back-end 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 "
"
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 analyze 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.
Add an OO interface
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 focuses 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.
perl v5.10.1 2010-10-15 Read(3pm)