ZipExtraFields need data from central directory as well
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Key: SANDBOX-292
URL: https://issues.apache.org/jira/browse/SANDBOX-292
Project: Commons Sandbox
Issue Type: Improvement
Components: Compress
Reporter: Stefan Bodewig
Extra field data can be stored in two places inside a zip archive - the entries
local file data and its central directory entry.
Currently ZipFile - like java.util.zip.* - ignores the data stored inside the
central directory and assumes all information can be taken from the local file
data part.
Unfortunately there are cases where an archiver uses different data, or even
worse, only uses the central directory. One such case comes up with
SANDBOX-176 and WinZIP. WinZIP uses InfoZIP extra fields to store Unicode
versions of file names but it only stores them inside the central directory,
where ZipFile doesn't look for them.
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