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Apache Apache Commons Compress RELEASE NOTES
Apache Commons Compress software defines an API for working with
compression and archive formats. These include: bzip2, gzip, pack200,
lzma, xz, Snappy, traditional Unix Compress, DEFLATE and ar, cpio,
jar, tar, zip, dump, 7z, arj.
Release 1.9
-----------
New features:
o Added support for DEFLATE streams without any gzip framing.
Issue: COMPRESS-263.
Thanks to Matthias Stevens.
Fixed Bugs:
o When reading 7z files unknown file properties and properties of type
kDummy are now ignored.
Issue: COMPRESS-287.
o Expanding 7z archives using LZMA compression could cause an
EOFException.
Issue: COMPRESS-286.
o Long-Name and -link or PAX-header entries in TAR archives always had
the current time as last modfication time, creating archives that
are different at the byte level each time an archive was built.
Issue: COMPRESS-289.
Thanks to Bob Robertson.
Changes:
o Checking for XZ for Java may be expensive. The result will now be
cached outside of an OSGi environment. You can use the new
XZUtils#setCacheXZAvailability to overrride this default behavior.
Issue: COMPRESS-285.
For complete information on Apache Commons Compress, including instructions
on how to submit bug reports, patches, or suggestions for improvement,
see the Apache Commons Compress website:
http://commons.apache.org/compress/
Old Release Notes
=================
Release 1.8.1
-------------
New features:
o COMPRESS-272: CompressorStreamFactory can now auto-detect Unix compress
(".Z") streams.
Fixed Bugs:
o COMPRESS-270: The snappy, ar and tar inputstreams might fail to read from a
non-buffered stream in certain cases.
o COMPRESS-277: IOUtils#skip might skip fewer bytes than requested even though
more could be read from the stream.
o COMPRESS-276: ArchiveStreams now validate there is a current entry before
reading or writing entry data.
o ArjArchiveInputStream#canReadEntryData tested the current
entry of the stream rather than its argument.
o COMPRESS-274: ChangeSet#delete and deleteDir now properly deal with unnamed
entries.
o COMPRESS-273: Added a few null checks to improve robustness.
o COMPRESS-278: TarArchiveInputStream failed to read archives with empty
gid/uid fields.
o COMPRESS-279: TarArchiveInputStream now again throws an exception when it
encounters a truncated archive while reading from the last
entry.
o COMPRESS-280: Adapted TarArchiveInputStream#skip to the modified
IOUtils#skip method. Thanks to BELUGA BEHR.
Changes:
o The dependency on org.tukaani:xz is now marked as optional.
Release 1.8
-----------
New features:
o GzipCompressorInputStream now provides access to the same
metadata that can be provided via GzipParameters when writing
a gzip stream.
Issue: COMPRESS-260.
o SevenZOutputFile now supports chaining multiple
compression/encryption/filter methods and passing options to
the methods.
Issue: COMPRESS-266.
o The (compression) method(s) can now be specified per entry in
SevenZOutputFile.
Issue: COMPRESS-261.
o SevenZArchiveEntry "knows" which method(s) have been used to
write it to the archive.
Issue: COMPRESS-258.
o The 7z package now supports the delta filter as method.
o The 7z package now supports BCJ filters for several platforms.
You will need a version >= 1.5 of XZ for Java to read archives
using BCJ, though.
Issue: COMPRESS-257.
Fixed Bugs:
o BZip2CompressorInputStream read fewer bytes than possible from
a truncated stream.
Issue: COMPRESS-253.
o SevenZFile failed claiming the dictionary was too large when
archives used LZMA compression for headers and content and
certain non-default dictionary sizes.
Issue: COMPRESS-253.
o CompressorStreamFactory.createCompressorInputStream with
explicit compression did not honor decompressConcatenated
Issue: COMPRESS-259.
o TarArchiveInputStream will now read archives created by tar
implementations that encode big numbers by not adding a
trailing NUL.
Issue: COMPRESS-262.
o ZipArchiveInputStream would return NUL bytes for the first 512
bytes of a STORED entry if it was the very first entry of the
archive.
Issue: COMPRESS-264.
o When writing PAX/POSIX headers for TAR entries with
backslashes or certain non-ASCII characters in their name
TarArchiveOutputStream could fail.
Issue: COMPRESS-265.
o ArchiveStreamFactory now throws a StreamingNotSupported - a
new subclass of ArchiveException - if it is asked to read from
or write to a stream and Commons Compress doesn't support
streaming for the format. This currently only applies to the
7z format.
Issue: COMPRESS-267.
Release 1.7
-----------
New features:
o Read-Only support for Snappy compression.
Issue: COMPRESS-147. Thanks to BELUGA BEHR.
o Read-Only support for .Z compressed files.
Issue: COMPRESS-243. Thanks to Damjan Jovanovic.
o ZipFile and ZipArchiveInputStream now support reading entries
compressed using the SHRINKING method. Thanks to Damjan Jovanovic.
o GzipCompressorOutputStream now supports setting the compression
level and the header metadata (filename, comment, modification time,
operating system and extra flags)
Issue: COMPRESS-250. Thanks to Emmanuel Bourg.
o ZipFile and ZipArchiveInputStream now support reading entries
compressed using the IMPLODE method.
Issue: COMPRESS-115. Thanks to Emmanuel Bourg.
o ZipFile and the 7z file classes now implement Closeable and can be
used in try-with-resources constructs.
Fixed Bugs:
o SevenZOutputFile#closeArchiveEntry throws an exception when using
LZMA2 compression on Java8. Issue: COMPRESS-241.
o 7z reading of big 64bit values could be wrong.
Issue: COMPRESS-244. Thanks to Nico Kruber.
o TarArchiveInputStream could fail to read an archive completely.
Issue: COMPRESS-245.
o The time-setters in X5455_ExtendedTimestamp now set the
corresponding flags explicitly - i.e. they set the bit if the valus
is not-null and reset it otherwise. This may cause
incompatibilities if you use setFlags to unset a bit and later set
the time to a non-null value - the flag will now be set.
Issue: COMPRESS-242.
o SevenZOutputFile would create invalid archives if more than six
empty files or directories were included. Issue: COMPRESS-252.
Release 1.6
-----------
Version 1.6 introduces changes to the internal API of the tar package that
break backwards compatibility in the following rare cases. This version
removes the package private TarBuffer class along with the protected "buffer"
members in TarArchiveInputStream and TarArchiveOutputStream. This change will
only affect you if you have created a subclass of one of the stream classes
and accessed the buffer member or directly used the TarBuffer class.
Changes in this version include:
New features:
o Added support for 7z archives. Most compression algorithms
can be read and written, LZMA and encryption are only
supported when reading. Issue: COMPRESS-54. Thanks to Damjan Jovanovic.
o Added read-only support for ARJ archives that don't use
compression. Issue: COMPRESS-226. Thanks to Damjan Jovanovic.
o DumpArchiveInputStream now supports an encoding parameter that
can be used to specify the encoding of file names.
o The CPIO streams now support an encoding parameter that can be
used to specify the encoding of file names.
o Read-only support for LZMA standalone compression has been added.
Issue: COMPRESS-111.
Fixed Bugs:
o TarBuffer.tryToConsumeSecondEOFRecord could throw a
NullPointerException Issue: COMPRESS-223. Thanks to Jeremy Gustie.
o Parsing of zip64 extra fields has become more lenient in order
to be able to read archives created by DotNetZip and maybe
other archivers as well. Issue: COMPRESS-228.
o TAR will now properly read the names of symbolic links with
long names that use the GNU variant to specify the long file
name. Issue: COMPRESS-229. Thanks to Christoph Gysin.
o ZipFile#getInputStream could return null if the archive
contained duplicate entries.
The class now also provides two new methods to obtain all
entries of a given name rather than just the first one.
Issue: COMPRESS-227.
o CpioArchiveInputStream failed to read archives created by
Redline RPM. Issue: COMPRESS-236. Thanks to Andrew Duffy.
o TarArchiveOutputStream now properly handles link names that
are too long to fit into a traditional TAR header. Issue:
COMPRESS-237. Thanks to Emmanuel Bourg.
o The auto-detecting create*InputStream methods of Archive and
CompressorStreamFactory could fail to detect the format of
blocking input streams. Issue: COMPRESS-239.
Changes:
o Readabilty patch to TarArchiveInputStream. Issue:
COMPRESS-232. Thanks to BELUGA BEHR.
o Performance improvements to TarArchiveInputStream, in
particular to the skip method. Issue: COMPRESS-234. Thanks to
BELUGA BEHR.
Release 1.5
-----------
New features:
o CompressorStreamFactory has an option to create decompressing
streams that decompress the full input for formats that support
multiple concatenated streams.
Issue: COMPRESS-220.
Fixed Bugs:
o Typo in CompressorStreamFactory Javadoc
Issue: COMPRESS-218.
Thanks to Gili.
o ArchiveStreamFactory's tar stream detection created false positives
for AIFF files.
Issue: COMPRESS-191.
Thanks to Jukka Zitting.
o XZ for Java didn't provide an OSGi bundle. Compress' dependency on
it has now been marked optional so Compress itself can still be used
in an OSGi context.
Issue: COMPRESS-199.
Thanks to Jukka Zitting.
o When specifying the encoding explicitly TarArchiveOutputStream would
write unreadable names in GNU mode or even cause errors in POSIX
mode for file names longer than 66 characters.
Issue: COMPRESS-200.
Thanks to Christian Schlichtherle.
o Writing TAR PAX headers failed if the generated entry name ended
with a "/".
Issue: COMPRESS-203.
o ZipArchiveInputStream sometimes failed to provide input to the
Inflater when it needed it, leading to reads returning 0.
Issue: COMPRESS-189.
Thanks to Daniel Lowe.
o TarArchiveInputStream ignored the encoding for GNU long name
entries.
Issue: COMPRESS-212.
o TarArchiveInputStream could leave the second EOF record inside the
stream it had just finished reading.
Issue: COMPRESS-206.
Thanks to Peter De Maeyer.
o DumpArchiveInputStream no longer implicitly closes the original
input stream when it reaches the end of the archive.
o ZipArchiveInputStream now consumes the remainder of the archive when
getNextZipEntry returns null.
o Unit tests could fail if the source tree was checked out to a
directory tree containign spaces.
Issue: COMPRESS-205.
Thanks to Daniel Lowe.
o Fixed a potential ArrayIndexOutOfBoundsException when reading STORED
entries from ZipArchiveInputStream.
Issue: COMPRESS-219.
o CompressorStreamFactory can now be used without XZ for Java being
available.
Issue: COMPRESS-221.
Changes:
o Improved exception message if a zip archive cannot be read because
of an unsupported compression method.
Issue: COMPRESS-188.
Thanks to Harald Kuhn.
o ArchiveStreamFactory has a setting for file name encoding that sets
up encoding for ZIP and TAR streams.
Issue: COMPRESS-192.
Thanks to Jukka Zitting.
o TarArchiveEntry now has a method to verify its checksum.
Issue: COMPRESS-191.
Thanks to Jukka Zitting.
o Split/spanned ZIP archives are now properly detected by
ArchiveStreamFactory but will cause an
UnsupportedZipFeatureException when read.
o ZipArchiveInputStream now reads archives that start with a "PK00"
signature. Archives with this signatures are created when the
archiver was willing to split the archive but in the end only needed
a single segment - so didn't split anything.
Issue: COMPRESS-208.
o TarArchiveEntry has a new constructor that allows setting linkFlag
and preserveLeadingSlashes at the same time.
Issue: COMPRESS-201.
o ChangeSetPerformer has a new perform overload that uses a ZipFile
instance as input.
Issue: COMPRESS-159.
o Garbage collection pressure has been reduced by reusing temporary
byte arrays in classes.
Issue: COMPRESS-172.
Thanks to Thomas Mair.
o Can now handle zip extra field 0x5455 - Extended Timestamp.
Issue: COMPRESS-210.
Thanks to Julius Davies.
o handle zip extra field 0x7875 - Info Zip New Unix Extra Field.
Issue: COMPRESS-211.
Thanks to Julius Davies.
o ZipShort, ZipLong, ZipEightByteInteger should implement Serializable
Issue: COMPRESS-213.
Thanks to Julius Davies.
o better support for unix symlinks in ZipFile entries.
Issue: COMPRESS-214.
Thanks to Julius Davies.
o ZipFile's initialization has been improved for non-Zip64 archives.
Issue: COMPRESS-215.
Thanks to Robin Power.
o Updated XZ for Java dependency to 1.2 as this version provides
proper OSGi manifest attributes.
Release 1.4.1
-------------
This is a security bugfix release, see
http://commons.apache.org/proper/commons-compress/security.html#Fixed_in_Apache_Commons_Compress_1.4.1
Fixed Bugs:
o Ported libbzip2's fallback sort algorithm to
BZip2CompressorOutputStream to speed up compression in certain
edge cases.
Release 1.4
-----------
New features:
o COMPRESS-156: Support for the XZ format has been added.
Fixed Bugs:
o COMPRESS-183: The tar package now allows the encoding of file names to be
specified and can optionally use PAX extension headers to
write non-ASCII file names.
The stream classes now write (or expect to read) archives that
use the platform's native encoding for file names. Apache
Commons Compress 1.3 used to strip everything but the lower
eight bits of each character which effectively only worked for
ASCII and ISO-8859-1 file names.
This new default behavior is a breaking change.
o COMPRESS-184: TarArchiveInputStream failed to parse PAX headers that
contained non-ASCII characters.
o COMPRESS-178: TarArchiveInputStream throws IllegalArgumentException instead of IOException
o COMPRESS-179: TarUtils.formatLongOctalOrBinaryBytes() assumes the field will be 12 bytes long
o COMPRESS-175: GNU Tar sometimes uses binary encoding for UID and GID
o COMPRESS-171: ArchiveStreamFactory.createArchiveInputStream would claim
short text files were TAR archives.
o COMPRESS-164: ZipFile didn't work properly for archives using unicode extra
fields rather than UTF-8 filenames and the EFS-Flag.
o COMPRESS-169: For corrupt archives ZipFile would throw a RuntimeException in
some cases and an IOException in others. It will now
consistently throw an IOException.
Changes:
o COMPRESS-182: The tar package can now write archives that use star/GNU/BSD
extensions or use the POSIX/PAX variant to store numeric
values that don't fit into the traditional header fields.
o COMPRESS-181: Added a workaround for a Bug some tar implementations that add
a NUL byte as first byte in numeric header fields.
o COMPRESS-176: Added a workaround for a Bug in WinZIP which uses backslashes
as path separators in Unicode Extra Fields.
o COMPRESS-131: ArrayOutOfBounds while decompressing bz2. Added test case - code already seems to have been fixed.
o COMPRESS-146: BZip2CompressorInputStream now optionally supports reading of
concatenated .bz2 files.
o COMPRESS-154: GZipCompressorInputStream now optionally supports reading of
concatenated .gz files.
o COMPRESS-16: The tar package can now read archives that use star/GNU/BSD
extensions for files that are longer than 8 GByte as well as
archives that use the POSIX/PAX variant.
o COMPRESS-165: The tar package can now write archives that use star/GNU/BSD
extensions for files that are longer than 8 GByte as well as
archives that use the POSIX/PAX variant.
o COMPRESS-166: The tar package can now use the POSIX/PAX variant for writing
entries with names longer than 100 characters.
Release 1.3
-----------
Commons Compress 1.3 is the first version to require Java5 at runtime.
Changes in this version include:
New features:
o Support for the Pack200 format has been added. Issue: COMPRESS-142.
o Read-only support for the format used by the Unix dump(8) tool
has been added. Issue: COMPRESS-132.
Fixed Bugs:
o BZip2CompressorInputStream's getBytesRead method always
returned 0.
o ZipArchiveInputStream and ZipArchiveOutputStream could leak
resources on some JDKs. Issue: COMPRESS-152.
o TarArchiveOutputStream's getBytesWritten method didn't count
correctly. Issue: COMPRESS-160.
Changes:
o The ZIP package now supports Zip64 extensions. Issue: COMPRESS-36.
o The AR package now supports the BSD dialect of storing file
names longer than 16 chars (both reading and writing).
Issue: COMPRESS-144.
Release 1.2
-----------
New features:
o COMPRESS-123: ZipArchiveEntry has a new method getRawName that provides the
original bytes that made up the name. This may allow user
code to detect the encoding.
o COMPRESS-122: TarArchiveEntry provides access to the flags that determine
whether it is an archived symbolic link, pipe or other
"uncommon" file system object.
Fixed Bugs:
o COMPRESS-129: ZipArchiveInputStream could fail with a "Truncated ZIP" error
message for entries between 2 GByte and 4 GByte in size.
o COMPRESS-145: TarArchiveInputStream now detects sparse entries using the
oldgnu format and properly reports it cannot extract their
contents.
o COMPRESS-130: The Javadoc for ZipArchiveInputStream#skip now matches the
implementation, the code has been made more defensive.
o COMPRESS-140: ArArchiveInputStream fails if entries contain only blanks for
userId or groupId. Thanks to Trejkaz.
o COMPRESS-139: ZipFile may leak resources on some JDKs.
o COMPRESS-125: BZip2CompressorInputStream throws IOException if
underlying stream returns available() == 0.
Removed the check.
o COMPRESS-127: Calling close() on inputStream returned by
CompressorStreamFactory.createCompressorInputStream()
does not close the underlying input stream.
o COMPRESS-119: TarArchiveOutputStream#finish now writes all buffered
data to the stream
Changes:
o ZipFile now implements finalize which closes the underlying
file.
o COMPRESS-117: Certain tar files not recognised by
ArchiveStreamFactory.
Release 1.1
-----------
New features:
o COMPRESS-108: Command-line interface to list archive contents.
Usage: java -jar commons-compress-n.m.jar archive-name [zip|tar|etc]
o COMPRESS-109: Tar implementation does not support Pax headers
Added support for reading pax headers.
Note: does not support global pax headers
o COMPRESS-103: ZipArchiveInputStream can optionally extract data that used
the STORED compression method and a data descriptor.
Doing so in a stream is not safe in general, so you have to
explicitly enable the feature. By default the stream will
throw an exception if it encounters such an entry.
o COMPRESS-98: The ZIP classes will throw specialized exceptions if any
attempt is made to read or write data that uses zip features
not supported (yet).
o COMPRESS-99: ZipFile#getEntries returns entries in a predictable order -
the order they appear inside the central directory.
A new method getEntriesInPhysicalOrder returns entries in
order of the entry data, i.e. the order ZipArchiveInputStream
would see.
o The Archive*Stream and ZipFile classes now have
can(Read|Write)EntryData methods that can be used to check
whether a given entry's data can be read/written.
The method currently returns false for ZIP archives if an
entry uses an unsupported compression method or encryption.
o COMPRESS-89: The ZIP classes now detect encrypted entries.
o COMPRESS-97: Added autodetection of compression format to
CompressorStreamFactory.
o COMPRESS-95: Improve ExceptionMessages in ArchiveStreamFactory Thanks to Joerg Bellmann.
o A new constructor of TarArchiveEntry can create entries with
names that start with slashes - the default is to strip
leading slashes in order to create relative path names.
o ArchiveEntry now has a getLastModifiedDate method.
o COMPRESS-78: Add a BZip2Utils class modelled after GZipUtils Thanks to Jukka Zitting.
Fixed Bugs:
o COMPRESS-72: Move acknowledgements from NOTICE to README
o COMPRESS-113: TarArchiveEntry.parseTarHeader() includes the trailing space/NUL when parsing the octal size
o COMPRESS-118: TarUtils.parseName does not properly handle characters outside the range 0-127
o COMPRESS-107: ArchiveStreamFactory does not recognise tar files created by Ant
o COMPRESS-110: Support "ustar" prefix field, which is used when file paths are longer
than 100 characters.
o COMPRESS-100: ZipArchiveInputStream will throw an exception if it detects an
entry that uses a data descriptor for a STORED entry since it
cannot reliably find the end of data for this "compression"
method.
o COMPRESS-101: ZipArchiveInputStream should now properly read archives that
use data descriptors but without the "unofficial" signature.
o COMPRESS-74: ZipArchiveInputStream failed to update the number of bytes
read properly.
o ArchiveInputStream has a new method getBytesRead that should
be preferred over getCount since the later may truncate the
number of bytes read for big archives.
o COMPRESS-85: The cpio archives created by CpioArchiveOutputStream couldn't
be read by many existing native implementations because the
archives contained multiple entries with the same inode/device
combinations and weren't padded to a blocksize of 512 bytes.
o COMPRESS-73: ZipArchiveEntry, ZipFile and ZipArchiveInputStream are now
more lenient when parsing extra fields.
o COMPRESS-82: cpio is terribly slow.
Documented that buffered streams are needed for performance
o Improved exception message if the extra field data in ZIP
archives cannot be parsed.
o COMPRESS-17: Tar format unspecified - current support documented.
o COMPRESS-94: ZipArchiveEntry's equals method was broken for entries created
with the String-arg constructor. This lead to broken ZIP
archives if two different entries had the same hash code. Thanks to Anon Devs.
o COMPRESS-87: ZipArchiveInputStream could repeatedly return 0 on read() when
the archive was truncated. Thanks to Antoni Mylka.
o COMPRESS-86: Tar archive entries holding the file name for names longer
than 100 characters in GNU longfile mode didn't properly
specify they'd be using the "oldgnu" extension.
o COMPRESS-83: Delegate all read and write methods in GZip stream in order to
speed up operations.
o The ar and cpio streams now properly read and write last
modified times.
o COMPRESS-81: TarOutputStream can leave garbage at the end of the archive
Changes:
o COMPRESS-112: ArArchiveInputStream does not handle GNU extended filename records (//)
o COMPRESS-105: Document that the name of an ZipArchiveEntry determines whether
an entry is considered a directory or not.
If you don't use the constructor with the File argument the entry's
name must end in a "/" in order for the entry to be known as a directory.
o COMPRESS-79: Move DOS/Java time conversions into Zip utility class.
o COMPRESS-75: ZipArchiveInputStream does not show location in file
where a problem occurred.