createArchiveInputStream detects text files less than 100 bytes as tar archives
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Key: COMPRESS-171
URL: https://issues.apache.org/jira/browse/COMPRESS-171
Project: Commons Compress
Issue Type: Bug
Components: Archivers
Affects Versions: 1.3, 1.2
Environment: Windows 7/JDK 1.6
Reporter: Daniel Lowe
Fix For: 1.1
The fix for COMPRESS-117 which modified
ArchiveStreamFactory().createArchiveInputStream(inputstream) results in short
text files (empirically seems to be those <= 100 bytes) being detected as tar
archives which obviously is not desirable if one wants to know whether or not
the files are archives.
I'm not an expert on compressed archives but perhaps the heuristic that if a
stream is interpretable as a tar file without an exception being thrown should
only be applied on archives greater than 100 bytes?
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