[jira] [Updated] (TIKA-1236) CharsetDetector returning unsupported encoding for some 7-bit Outlook/MSG files

["Tim Allison (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TIKA-1236?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tim Allison updated TIKA-1236:
------------------------------

    Summary: CharsetDetector returning unsupported encoding for some 7-bit Outlook/MSG files  (was: EncodingDetector returning unsupported encoding for some 7-bit Outlook/MSG files)

> CharsetDetector returning unsupported encoding for some 7-bit Outlook/MSG files
> -------------------------------------------------------------------------------
>
>                 Key: TIKA-1236
>                 URL: https://issues.apache.org/jira/browse/TIKA-1236
>             Project: Tika
>          Issue Type: Bug
>          Components: parser
>    Affects Versions: 1.6
>            Reporter: Tim Allison
>            Priority: Minor
>
> When parsing a 7-bit encoded Outlook post (.msg without headers), Tika tries to detect the encoding.  For a handful of files, the EncodingDetector returns "IBM424_rtl" with a confidence > the threshold.  This encoding is then set  with MAPIMessage.set7BitEncoding().  When MAPI tries to use this encoding, it finds that it is unsupported and throws an exception. 
> Full stacktrace:
> {noformat}
> org.apache.tika.exception.TikaException: Unexpected RuntimeException from org.apache.tika.parser.microsoft.OfficeParser@72ccd846
> 	at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:244)
> 	at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:242)
> 	at org.apache.tika.parser.AutoDetectParser.parse(AutoDetectParser.java:120)
> 	at org.apache.tika.parser.microsoft.OutlookParserTest.testOutlookEncoding(OutlookParserTest.java:264)
> ...irrelevant test framework junk...
> Caused by: java.lang.RuntimeException: Encoding not found - IBM424_rtl
> 	at org.apache.poi.hsmf.datatypes.StringChunk.parseAs7BitData(StringChunk.java:149)
> 	at org.apache.poi.hsmf.datatypes.StringChunk.parseString(StringChunk.java:85)
> 	at org.apache.poi.hsmf.datatypes.StringChunk.set7BitEncoding(StringChunk.java:74)
> 	at org.apache.poi.hsmf.MAPIMessage.set7BitEncoding(MAPIMessage.java:455)
> 	at org.apache.tika.parser.microsoft.OutlookExtractor.parse(OutlookExtractor.java:95)
> 	at org.apache.tika.parser.microsoft.OfficeParser.parse(OfficeParser.java:223)
> 	at org.apache.tika.parser.microsoft.OfficeParser.parse(OfficeParser.java:167)
> 	at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:242)
> 	... 26 more
> Caused by: java.io.UnsupportedEncodingException: IBM424_rtl
> 	at java.lang.StringCoding.decode(Unknown Source)
> 	at java.lang.String.<init>(Unknown Source)
> 	at java.lang.String.<init>(Unknown Source)
> 	at org.apache.poi.hsmf.datatypes.StringChunk.parseAs7BitData(StringChunk.java:147)
> 	... 33 more
> {noformat}
> Unfortunately, I can't share the problematic documents, and I can't create a synthetic document that triggers this issue.
> Two questions:
> 1)  Should EncodingDetector return an encoding that is not supported?
> 2)  If so, should we add a simple check before calling set7BitEncoding()?



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