[JENA-959] riot: gzip output option

• Type: New Feature
• Status: Closed
• Priority: Trivial
• Resolution: Implemented
• Fix Version/s: Jena 3.0.1
• Component/s: RIOT
• Assignee: Andy Seaborne
• Reporter: Stian Soiland-Reyes
• Created: 08/Jun/15 13:49
• Updated: 12/Dec/15 17:46
• Resolved: 16/Aug/15 16:09

Description

The riot command line tool supports incoming file formats like *.ttl.gz, but there is no (obvious) way to also output in compressed formats.

This can of course also be achieved with piping and gzip, but that is easily platform-specific. Writing *.format.gz with the command line is probably as much within remit of someone using riot on the command line as for reading those.

So my suggestion is to support extension .gz in the various --output options to enabled outputting via a GzipOutputStream – http://docs.oracle.com/javase/7/docs/api/java/util/zip/GZIPOutputStream.html

For example:

stain@biggie-utopic:~/Downloads$ riot --output=nquads.gz chembl_20.0_target_targetcmpt_ls.ttl.gz 
Not recognized as an RDF language : 'nquads.gz'

Issue Links

• relates to: JENA-960 The construction of jena-cmd