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https://issues.apache.org/jira/browse/TIKA-4305?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17880641#comment-17880641
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Tim Allison commented on TIKA-4305:
-----------------------------------
K. So there are two different issues.
1) Above, I was focusing on the difference in detection between UCS2 vs UTF-16
and UCS4 vs UTF32. There's not much we can do with that.
2) The other issue is that Tika can have a hard time determining that an
InputStream is a text file unless the filename is included as a hint. Without
the file name, Tika detects octet-stream.
So, either of these work for communicating the file name to Tika:
a) System.out.println(new
Tika().parseToString(Paths.get(".../multilingual_test_new_UCS-2.txt")));
b) Metadata metadata = new Metadata();
try (InputStream is =
TikaInputStream.get(Paths.get("/home/tallison/Downloads/multilingual_test_new_UCS-2.txt"),
metadata)) {
System.out.println(new Tika().parseToString(is, metadata));
}
> Tika producing empty output for UCS encoded txt files; parses UTF-7 files as
> UTF-8
> ----------------------------------------------------------------------------------
>
> Key: TIKA-4305
> URL: https://issues.apache.org/jira/browse/TIKA-4305
> Project: Tika
> Issue Type: Bug
> Components: tika-app, tika-core
> Affects Versions: 2.9.2
> Environment: Ubuntu 22.04 LTS
> Reporter: Manish S N
> Priority: Minor
> Attachments: multilingual_test_new_UCS-2.txt,
> multilingual_test_new_UCS-4.txt, multilingual_test_new_UTF-7.txt,
> multilingual_test_new_UTF-8.txt, pom.xml, tika_UTF-7_output.txt
>
>
> Tika producing empty string as output for UCS-2 and UCS-4 encoded txt files.
> No logs or errors just an empty string.
> Other formats are okay except UTF-7 files are parsed as UTF-8 which wreaks
> havoc with non ascii characters.
> how do i know that?: I opened an the UTF-7 file as UTF-8 encoded using open
> dialog of gedit and found the outputs similar
>
> I am attaching all four encoded files along with tika's output from parsing
> the UTF-7 for reference
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