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Stefan Bodewig commented on COMPRESS-288: ----------------------------------------- No, Commons Compress doesn't support PPMd, yet, nobody has found the time or inclination to implement it. http://commons.apache.org/proper/commons-compress/limitations.html#a7Z says 'Several of the "methods" supported by 7z are not implemented in Compress.' and http://commons.apache.org/proper/commons-compress/javadocs/api-1.8.1/org/apache/commons/compress/archivers/sevenz/SevenZMethod.html lists the the methods that are supported - some of them are read-only. > Unsupport for 7z ppmd compression format. > ----------------------------------------- > > Key: COMPRESS-288 > URL: https://issues.apache.org/jira/browse/COMPRESS-288 > Project: Commons Compress > Issue Type: Bug > Components: Archivers > Affects Versions: 1.8.1 > Environment: Tika from truck build. > Reporter: sunxingzhe > Labels: 7z > > 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. -- This message was sent by Atlassian JIRA (v6.2#6252)