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From "Maciej Lizewski (JIRA)" <j...@apache.org>
Subject [jira] [Created] (TIKA-1162) charset problem with RFC822Parser
Date Fri, 16 Aug 2013 09:11:48 GMT
Maciej Lizewski created TIKA-1162:

             Summary: charset problem with RFC822Parser
                 Key: TIKA-1162
                 URL: https://issues.apache.org/jira/browse/TIKA-1162
             Project: Tika
          Issue Type: Bug
          Components: parser
            Reporter: Maciej Lizewski

RFC822Parser (mime mail) uses MailContentHandler which internally uses AutoDetectParser to
handle each mime part. The problem is that MailContentHandler reads mime part headers and
sets CONTENT_TYPE and CONTENT_ENCODING metadata properly and passes this metadata to AutoDetectParser::parse
method. But that method ignores those headers and overwrites it:

        MediaType type = this.getDetector().detect(tis, metadata);
        metadata.set(Metadata.CONTENT_TYPE, type.toString());

this leads to some additional recursion loops (Detector returns message/rfc822 mime type instead
of proper mimetype for current mime part) and finally somehow it skips out of the loop but
without proper content-type and content-encoding headers...

My proposition is to add check if metadata already contains CONTENT_TYPE in AutoDetectPArser::parse
and in such case do not override it. If this is not valid behavior in general - then RFC822Parser
should use custom parser in MailContentHandler which respects passed content-type...

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