6 * Changed gzread so that its behaviour matches C::Z::gzread 1.x if it
7 is called after eof. In this case it will write an empty string
8 into the output parameter. This change is solely for backward
17 * Breakout zlib specific code into separate modules.
19 * Limited support for reading/writing zip files
21 2.000_06 5 October 2005
23 * Added eof parameter to Compress::Zlib::inflate method.
25 * Fixed issue with 64-bit
27 2.000_05 4 October 2005
29 * Renamed IO::* to IO::Compress::* & IO::Uncompress::*
31 2.000_04 23 September 2005
33 * Fixed some more non-portable test that were failing on VMS.
35 * fixed problem where error messages in the oneshot interface were
38 2.000_03 12 September 2005
40 * Fixed some non-portable test that were failing on VMS.
42 * Fixed export of zlib constants from the IO::* classes
44 2.000_02 6 September 2005
46 * Split Append mode into Append and Merge
48 * Fixed typos in the documentation.
52 * Added libscan to Makefile.PL
54 * Added InputLength for IO::Gunzip et al
56 2.000_01 22 August 2005
58 * Fixed VERSION in Compress::Gzip::Constants
60 * Removed Compress::Gzip::Info from the distribution.
62 2.000_00 21 August 2005
64 * First Beta relase of Compress::zlib rewrite.
66 1.38 - 6 September 2005
68 * Integrate core change 25304 -- Symbian Update
70 * Added libscan to Makefile.PL
74 * Change to t/03examples.t for VMS from Abe Timmerman
78 * Renamed zlib-src-1.2.3 to zlib-src to help VMS
80 * Fixed Makefile.PL for VMS
82 * Fixed t/03examples.t for VMS
84 * Added a couple of notes about incompatibility with Unix compress.
88 * Updated zlib source to 1.2.3
90 * Fixed problem with where two calls to gzclose would hang the debugger.
91 See https://rt.cpan.org/Ticket/Display.html?id=13789
93 * Added code from Alexey Tourbin to use XSLoader when available,
94 and DynaLoader otherwise.
96 * Documented that the compress & uncompress functions were not
97 the same as the Unix utilities of the same name.
99 * Fixed 05gzsetp -- it left a temp file hanging around.
101 * Integrate core change 24787 - SvUPGRADE returns void in blead
103 * Integrate core change 24788 - Makefile.PL adjustments for the core
106 1.34 - 30 January 2005
108 * Fixed typo in the README
110 * Fixed examples.t on Win32 where paths have embedded whitespace.
112 * Fix for Cygwin and core integration from Jos I. Boumans
114 * Upgrade zlib source to 1.2.2
116 1.33 - 14 January 2004
118 * Reworked Makefile.PL to avoid creating a private copy of zlib.
119 This both simplifies the build, plus it makes life easier for VMS.
121 * Patches for Makefile.PL to get it to work on VMS supplied by
124 * memGunzip has very slow on FreeBSD. Turns out to be down to
125 the way realloc works on FreeBSD. Changed both inflate & deflate
126 to use exponentially increasing buffer sizes when they need to
127 realloc. Thanks to Peter Jeremy for the lowdown on FreeBSD
130 1.32 - 26 November 2003
132 * Steve Hay reported a problem on rt.cpan.org with Windows and
133 MSCV++ 6.0 where the source from the zlib directory was getting
134 installed with the rest of the module.
135 https://rt.cpan.org/Ticket/Display.html?id=1741
137 This has been fixed by renaming the "zlib" directory to "zlib-src"
138 thus avoiding a conflict with the name of this Perl module.
140 * Fixed a bug in the inflate method where the input buffer is an
141 lvalue (via substr). Problem & solution reported by Salvador Fandiqo.
143 * Tightened up the logic in Makefile.PL when BUILD_ZLIB is
144 True. Issue spotted by Ralf S. Engelschall.
146 1.31 - 29 October 2003
148 * Reinstated the creation of .bak files - $^I seems to need a
149 backup file on Windows. For OpenVMS, the extenstion _bak is used.
151 1.30 - 28 October 2003
153 * Bundled a sub-set of the zlib source with the module and changed
154 the default make behaviour to build with the included zlib source.
155 The previous behaviour of using a pre-built zlib library is
156 still available for those that want it.
158 * Added prototypes to the subs in Zlib.pm that didn't already have
159 them. Patch from Ed Avis.
161 * No .bak files are created by Makefile.PL any more - this keep
162 distclean much happier. Patch suggested by Ed Avis.
163 This also fixes a similar problem reported by Dr. Martin Zinser
166 * Documentation for some of the gz functions updated.
168 * Format strings modified in DispStream to keep OpenVMS happy.
169 Problem reported by Dr. Martin Zinser.
174 * Makefile.PL now displays a warning about not installing
175 Compress::Zlib via the CPAN shell.
177 * Fix to allow intermingling of gzread & gzreadline - patch
178 supplied by Doug Perham.
180 * memGunzip will silently now work if the gzip trailer is
181 missing. Some HTTP Origin Servers seem to leave it out.
185 * Tests 148 & 150 from t/02zlib.t were failing on redhat 9.
187 * Added a few words about the problems with Mac OS X to the README file.
191 * Fixed bug in gzopen where $gzerrno wasn't being set correctly.
192 The symptom was $gzerrno was set to Z_MEM_ERROR although the file
193 was opened ok. If gzopen failed, $gzerrno was being set correctly.
194 This problem wasn't spotted before because the typical test
195 to determine whether gzopen passed or failed was to check its
198 1.19 - 31 October 2002
200 * fixed a problem with t/02zlib.t that was failing with redhat 8.
202 1.18 - 24 October 2002
204 * fixed a Win32 problem in t/02zlib.t by changing sysread to read.
206 * zlib 1.0.5 & older doesn't have gzsetparams & gzeof. Added a new
207 variable to config.in to flag an old version of zlib. Split
208 out the tests for gzsetparams into t/05gzsetp.t
212 * Moved the test to check the versions of libz & zlib.h into a separate
213 file and added troubleshooting notes to README.
215 * In gzopen, only attempt to call "tell" for normal files.
217 * Fixed to work in taint mode.
219 * Broke changes out of README into Changes file.
221 * Replaced internal use of Z_PARTIAL_FLUSH symbol with Z_SYNC_FLUSH.
222 zlib.h says /* will be removed, use Z_SYNC_FLUSH instead */
224 1.16 - 13 December 2001
226 * Fixed bug in Makefile.PL that stopped "perl Makefile.PL PREFIX=..."
229 1.15 - 4th December 2001
231 * Changes a few types to get the module to build on 64-bit Solaris
233 * Changed the up/downgrade logic to default to the older constructs, and
234 to only call a downgrade if specifically requested. Some older versions
235 of Perl were having problems with the in-place edit.
237 * added the new XS constant code.
239 1.14 - 27th August 2001
241 * Memory overwrite bug fixed in "inflate". Kudos to Rob Simons for
242 reporting the bug and to Anton Berezin for fixing it for me.
244 1.13 - 31st June 2001
246 * Make sure config.in is consistant when released.
248 1.12 - 28th April 2001
250 * Modified Makefile.PL to only enable the warnings pragma if
251 using perl 5.6.1 or better.
253 1.11 - 17th February 2001
255 * Added logic in Makefile.PL to toggle between using $^W and
256 the warnings pragma in the module.
258 * The module, the examples & the test harness are now all strict
261 1.10 - 5th February 2001
263 * fixed a bug in memGunzip. Used Z_ERR instead of Z_DATA_ERROR.
265 1.09 - 15th January 2001
267 * Silenced a few compiler warnings.
269 * Updated zlib home site in README & Zlib.pm to www.info-zip.org
271 * Minor typo in Zlib.pm - a link used AUTHORS instead of AUTHOR
272 -- spotted by Frank Martini.
274 * Mention Archive::Zip
276 * added memGunzip. This is largely based on code provided by Jim Leonard.
278 * $deflate->flush can now take an optional parameter. Valid
279 values are Z_NO_FLUSH, Z_PARTIAL_FLUSH, Z_SYNC_FLUSH, Z_FULL_FLUSH
280 and Z_FINISH. The default is Z_FINISH.
284 * uncompress was clobbering its input parameter. Now it doesn't.
285 This bug was spotted by Deven T. Corzine.
287 * If a variable that only ever contained a number was given
288 to compress or deflate, it would not be compressed properly. Now
289 it will be coerced to a string and then compressed. This bug
290 was spotted by Deven T. Corzine.
294 * ANSI-ified the static functions in Zlib.xs
296 * Added the ability to build zlib along with the module.
297 This feature is 90% based on a Makefile provided by Gurusamy
302 * Fixed a nasty problem where inflate could truncate the data
303 returned. Thanks to Douglas Thomson <dougt@mugc.cc.monash.edu.au>
304 for both spotting the problem and fixing the bug.
306 * Added a note about the undocumented features in zlib that are
307 required when accessing zip files.
309 * gzclose will now get called automatically when the gzip object is
314 * Previous release used newSVpvn, which doesn't exist in 5.004_04
315 or earlier. Changed to use newSVpv instead.
317 * The module needs Perl 5.004 or better, so updated the version
318 checking in Zlib.pm and Makefile.PL
322 * Bug 19990527.001: compress(undef) core dumps -- Fixed.
326 * Updated to use the new PL_ symbols.
327 Means the module can be built with Perl 5.005_5*
331 * The return codes for gzread, gzreadline and gzwrite were
332 documented incorrectly as returning a status code.
334 * The test harness was missing a "gzclose". This caused problem
335 showed up on an amiga. Thanks to Erik van Roode for reporting
338 * Patched zlib.t for OS/2. Thanks to Ilya Zakharevich for the patch.
342 * A number of fixes to the test suite and the example scripts to
343 allow them to work under win32. All courtesy of Gurusamy
348 * Fixed crc32 & adler32. They were very broken.
350 * The following functions can now take a scalar reference in
351 place of a scalar for their buffer parameters:
360 This should mean applications that make use of the module don't
361 have to copy large buffers around.
364 * Normally the inflate method consumes I<all> of the input buffer
365 before returning. The exception to this is when inflate detects
366 the end of the stream (Z_STREAM_END). In this case the input
367 buffer need not be completely consumed. To allow processing of
368 file formats that embed a deflation stream (e.g. zip, gzip),
369 the inflate method now sets the buffer parameter to be what
370 remains after inflation.
372 When the return status is Z_STREAM_END, it will be what remains
373 of the buffer (if any) after deflation. When the status is Z_OK
374 it will be an empty string.
376 This change means that the buffer parameter must be a lvalue.
378 * Fixed crc32 and adler32. They were both very broken.
380 * Added the Compress::Zlib::memGzip function.
382 0.5 - Confirmed that no changes were necessary for zlib 1.0.3, or 1.0.4.
384 The optional parameters for deflateInit and inflateInit can now
385 be specified as an associative array in addition to a reference
386 to an associative array. They can also accept the -Name
389 gzopen can now optionally take a reference to an open
390 filehandle in place of a filename. In this case it will call
393 Added gzstream example script.
395 0.4 - Upgrade to support zlib 0.99
397 Added dictionary interface.
399 Fixed bug in gzreadline - previously it would keep returning
400 the same buffer. This bug was reported by Helmut Jarausch
402 Removed dependency to zutil.h and so dropped support for
404 DEF_MEM_LEVEL (use MAX_MEM_LEVEL instead)
405 DEF_WBITS (use MAX_WBITS instead)
407 0.3 - Added prototype specification.
409 0.2 - Fixed a minor allocation problem in Zlib.xs
411 0.1 - first alpha release. 2nd October 1995