... because Excel IS a database.
The library itself is stable, and can be regularly used.
I plan to add features on request, but if nobody asks for them, I will update the project very infrequently.
SpreadBase© is a set of APIs for programmatically accessing spreadsheets (currently, only OpenDocument 1.2).
Install/require the gem:
gem install spreadbase
require 'spreadbase'
Create/open a document:
document = SpreadBase::Document.new( "Today's menu.ods" )
Add a table:
document.tables << SpreadBase::Table.new(
'Transistors', [
[ 'Roasted 6502', 38.911 ],
[ '65000 with side dishes of Copper and Blitter', 512.0 ],
]
)
Modify an existing table; can be done also directly on the array:
table = document.tables.first
table.insert_row( 0, [ 'Dish', 'Price' ] )
table.insert_row( 2, [ '8080, with an 8-bit bus', 8 ] )
table.insert_column( 2, [ 'Availability', Date.today, Time.now + 42, 'Never!!' ] )
Add another (empty) table:
table_2 = SpreadBase::Table.new( 'Loud and annoying customers' )
document.tables << table_2
Append a column:
table_2.append_column( [ 'Name' ] )
Append a row:
table_2.append_row( [ 'Fabrizio F.' ] )
Read a column, or a range of columns:
table.column( 0 )
# [ 'Dish', 'Roasted 6502', '8080, with an 8-bit bus', '65000 with side dishes of Copper and Blitter' ]
table.column( 0 .. 1 )
# [ [ 'Dish', 'Roasted 6502', '8080, with an 8-bit bus', '65000 with side dishes of Copper and Blitter' ],
# [ 'Price', 38.911, 8, 512.0 ] ]
Read a row, or a range of rows:
table.row( 1 )
# [ 'Roasted 6502', 38.911 ]
table.row( 1 .. 2 )
# [ [ 'Roasted 6502', 38.911 ], [ '8080, with an 8-bit bus', 8 ] ]
Read a cell:
price_8080 = document.tables[ 0 ][ 1, 2 ]
When a cell value is read from an existing file, the data type is directly converted to the closest ruby one.
Write to a cell:
document.tables[ 0 ][ 1, 2 ] = price_8080 + 0.080
Print a table:
puts document.tables[ 0 ].to_s( :with_headers => true )
+----------------------------------------------+--------+---------------------------+
| Dish | Price | Availability |
+----------------------------------------------+--------+---------------------------+
| Roasted 6502 | 38.911 | 2012-04-21 |
| 8080, with an 8-bit bus | 8.08 | 2012-04-21 11:45:08 +0200 |
| 65000 with side dishes of Copper and Blitter | 512.0 | Never!! |
+----------------------------------------------+--------+---------------------------+
Print a document:
puts document.to_s( :with_headers => true )
Transistors:
+----------------------------------------------+--------+---------------------------+
| Dish | Price | Availability |
+----------------------------------------------+--------+---------------------------+
| Roasted 6502 | 38.911 | 2012-04-21 |
| 8080, with an 8-bit bus | 8.08 | 2012-04-21 11:45:08 +0200 |
| 65000 with side dishes of Copper and Blitter | 512.0 | Never!! |
+----------------------------------------------+--------+---------------------------+
Loud and annoying customers:
+-------------+
| Name |
+-------------+
| Fabrizio F. |
+-------------+
Save the document:
document.save
Enjoy many other APIs.
-
Numbers are decoded to Fixnum or Float, depending on the existence of the fractional part. Alternatively, numbers with a fractional part can be decoded as Bigdecimal, using the option:
SpreadBase::Document.new( "Random numbers für alle!.ods", floats_as_bigdecimal: true ) -
The gem is tested on all the supported Ruby versions (see Build), and used mainly on Linux.
-
The column widths are retained (decoding/encoding), but at the current version, they're not [officially] accessible via any API.
- Styles; Date and and [Date]Times are formatted as, respectively, '%Y-%m-%d' and '%Y-%m-%d %H:%M:%S %z'
- Percentage data type - they're handled using their float value (e.g. 50% = 0.5)
https://github.com/saveriomiroddi/spreadbase/wiki/Todo-%28roadmap%29
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