[
https://issues.apache.org/jira/browse/TIKA-786?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13154130#comment-13154130
]
Nick Burch commented on TIKA-786:
---------------------------------
Do we have any control over the ordering though? My hunch is that user supplied
ones should probably be used in preference to Tika ones, and the parser based
detectors in Tika should be used in preference to the Mime Type ones
One situation where the mimetype detection is better is with truncated files.
Here the container detector can just say "looks like one of mine, can't tell
you any more" while the mimetype one can use the filename to fill in the rest.
I've a feeling that at least some people pass in only the first few kb of files
for detection, to ensure it's fast, so their use case would want the MimeTypes
detector logic based on filename to kick in to specialise.
> Tika CLI --detect returns incorrect content-type for files with altered
> extensions
> ----------------------------------------------------------------------------------
>
> Key: TIKA-786
> URL: https://issues.apache.org/jira/browse/TIKA-786
> Project: Tika
> Issue Type: Bug
> Components: cli
> Affects Versions: 1.1
> Environment: Windows
> Reporter: John Mastarone
> Priority: Minor
>
> From a discussion on the user mailing list on Nov. 11 2011, where the
> following was requested as a new bug: Tika CLI will return incorrect content
> type information when called with --detect for files that have had their
> extensions modified (and nothing else). MS Word (.doc) documents that have
> their extension changed to .xls or .ppt will be incorrectly detected as Excel
> or PowerPoint documents, whereas the --metadata option will determine the
> content type correctly (as application/msword), based on the actual contents
> of these mis-named files. The same also occurs with other types of MS Office
> 2003 documents, and could possibly occur with a wide range of document types.
> To quote Nick B., from the user mailing list: "If you look at the
> TestMediaTypes class you'll see what you can get with just the mime magic and
> filenames, and then there's TestContainerAwareDetector which shows the
> correct detection happening by using the extra detectors available".
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
