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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=18648 <zip> still creates invalid file (NOT FIXED IN 1.5.3Beta1) [EMAIL PROTECTED] changed: What |Removed |Added ---------------------------------------------------------------------------- URL| |ftp://ftp.uu.net/pub/archivi | |ng/zip/doc/ Status|NEW |RESOLVED Resolution| |INVALID ------- Additional Comments From [EMAIL PROTECTED] 2003-04-03 10:01 ------- ZIP files created by Ant follow the spec defined in appnote-iz-latest that can be found at the URL above. In this, you'll find (under the description of the general purpose bit in local file header): Bit 3: If this bit is set, the fields crc-32, compressed size and uncompressed size are set to zero in the local header. The correct values are put in the data descriptor immediately following the compressed data. (Note: PKZIP version 2.04g for DOS only recognizes this bit for method 8 compression, newer versions of PKZIP recognize this bit for any compression method.) [Info-ZIP note: This bit was introduced by PKZIP 2.04 for DOS. In general, this feature can only be reliably used together with compression methods that allow intrinsic detection of the "end-of-compressed-data" condition. From the set of compression methods described in this Zip archive specification, only "deflate" meets this requirement. Especially, the method STORED does not work! The Info-ZIP tools recognize this bit regardless of the compression method; but, they rely on correctly set "compressed size" information in the central directory entry.] Ant does set bit 3 and sets both size values to 0 for compressed entries. Ant does correctly set the size in both the data descriptor and the central file header (at least for me). It seems as if the tool you use is not able to properly recognize and/or interpret this bit 3 - which it should better do as Ant also sets the version required to extract the file to 2, which in turn requires the above to work.
