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https://issues.apache.org/jira/browse/COMPRESS-288?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14134920#comment-14134920
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Stefan Bodewig commented on COMPRESS-288:
-----------------------------------------
Just for the record, this issue has been closed by the original reporter even
though Commons Compress still doesn't support PPMd. This would have been a
valid enhancement request.
If anybody stumbles upon this entry and wants to lend a hand implementing the
algorithm, don't hesitate, you'd be more than welcome.
> Missing support for 7z ppmd compression format.
> -----------------------------------------------
>
> Key: COMPRESS-288
> URL: https://issues.apache.org/jira/browse/COMPRESS-288
> Project: Commons Compress
> Issue Type: New Feature
> Components: Archivers
> Affects Versions: 1.8.1
> Environment: Tika from truck build.
> Reporter: sunxingzhe
> Labels: 7z
> Fix For: 1.8.1
>
>
> When Commons Compress 1.8.1 parse 7z type with ppmd compression format， the
> following error occurred.
> Caused by: java.io.IOException: Unsupported compression method [3, 4, 1]
> at
> org.apache.commons.compress.archivers.sevenz.Coders.addDecoder(Coders.java:74)
> at
> org.apache.commons.compress.archivers.sevenz.SevenZFile.buildDecoderStack(SevenZFile.java:865)
> at
> org.apache.commons.compress.archivers.sevenz.SevenZFile.buildDecodingStream(SevenZFile.java:832)
> at
> org.apache.commons.compress.archivers.sevenz.SevenZFile.getNextEntry(SevenZFile.java:151)
> at
> org.apache.tika.parser.pkg.PackageParser$SevenZWrapper.getNextEntry(PackageParser.java:224)
> at
> org.apache.tika.parser.pkg.PackageParser.parse(PackageParser.java:155)
> at
> org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:242)
> ... 5 more
> Please tell me tika whether or not to support ppmd decoder.
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