Spreadsheet binary object extraction

[ruebot]

Using the image extraction process as a basis, our next set of binary object extractions will be documents. This issue is meant to focus specially on xls xlsx, ods, and csv.

There may be a some tweaks to this depending on the outcome of #298.

[jrwiebe]

Putting this here for my reference; feedback is welcome.

These are the spreadsheet MIME types Tika will identify. The Mozilla MIME type list was also consulted. Unless there are objections I think I'll extract all of these, including templates and MS Works spreadsheets.

Excel

application/vnd.ms-excel
application/vnd.ms-excel.workspace.3
application/vnd.ms-excel.workspace.4
application/vnd.ms-excel.sheet.2
application/vnd.ms-excel.sheet.3
application/vnd.ms-excel.sheet.4
application/vnd.ms-excel.addin.macroenabled.12
application/vnd.ms-excel.sheet.binary.macroenabled.12
application/vnd.ms-excel.sheet.macroenabled.12
application/vnd.ms-excel.template.macroenabled.12
application/vnd.ms-spreadsheetml

Open Office

application/vnd.openxmlformats-officedocument.spreadsheetml.template
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
application/x-vnd.oasis.opendocument.spreadsheet-template
application/vnd.oasis.opendocument.spreadsheet-template
application/vnd.oasis.opendocument.spreadsheet
application/x-vnd.oasis.opendocument.spreadsheet

Other

application/x-tika-msworks-spreadsheet

CSV

Currently Tika only detects CSV if the parser is given a filename with the extension "CSV", although byte-based detection might be coming (TIKA-2826). I'll detect CSV by looking at the URL extension and checking if getMimeType() == "text/csv".

[jrwiebe]

MIME type references for #303, #304, #305, #306, #307:

• Tika: Full list of supported formats
• Mozilla: Incomplete list of MIME types
• Microsoft: Office 2007 File Format MIME Types
• OpenOffice: Mime Content Types used in OpenOffice.org1.0 / StarOffice 4.x and later

That should do it.