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177 Commits

Author SHA1 Message Date
Mark Adler 2556706d67 Document gzread() capability to read concurrently written files. 
Also since gzread() will no longer return an error for an incomplete
gzip file, have gzclose() return an error if the last gzread() ended
in the middle of a gzip stream.
 2011-12-14 04:21:00 -08:00
Mark Adler 421c7a61f0 Have inflate() with Z_FINISH avoid the allocation of a window. 
inflate() avoided that allocation normally, until it was modified to
update the window on a normal completion so that inflateResetKeep()
could work.  This patch restores that behavior, but only when
Z_FINISH is used successfully to complete an inflation of a stream in
a single call of inflate().  The comments in zlib.h have been updated
accordingly.
 2011-12-10 22:33:24 -08:00
Mark Adler afe7cf78d5 Enable dictionary setting in middle of stream, and keeping the dictionary. 
This patch adds the deflateResetKeep() function to retain the sliding
window for the next deflate operation, and fixes an inflateResetKeep()
problem that came from inflate() not updating the window when the
stream completed.  This enables constructing and decompressing a series
of concatenated deflate streams where each can depend on the history of
uncompressed data that precedes it.

This generalizes deflateSetDictionary() and inflateSetDictionary() to
permit setting the dictionary in the middle of a stream for raw deflate
and inflate.  This in combination with the Keep functions enables a
scheme for updating files block by block with the transmission of
compressed data, where blocks are sent with deflateResetKeep() to
retain history for better compression, and deflateSetDictionary() is
used for blocks already present at the receiver to skip compression but
insert that data in the history, again for better compression.  The
corresponding inflate calls are done on the receiver side.
 2011-12-08 00:13:52 -08:00
Mark Adler 6715208bdb Change ON macro to Z_ARG to avoid application conflicts. 
Using "ON" was a dumb idea, since it is common to have macros with
names like ON and OFF.  In fact, defining the OF macro back in 1995
was a bad idea, but now we're stuck with it.  Attempts to rename OF
to something else breaks many applications.
 2011-11-13 13:35:02 -08:00
Mark Adler e8576790be Note behavior of uncompress() to provide as much data as it can. 2011-10-23 12:25:55 -07:00
Mark Adler 6dbf1d1026 Add comment to gzdopen() in zlib.h to use dup() when using fileno(). 
A problem surfaced in a multi-threaded application where fileno() was
used to get a file descriptor from an fopen(), which was then fed to
gzdopen().  The problem occurred when the gzclose() followed by the
fclose() tried to close the same file descriptor twice.  If fclose()
were not done, there would be a memory leak.  The only way out is to
dup() the file descriptor so that gzclose() closes the duplicated
file descriptor, and fclose() closes the original file descriptor.
 2011-10-20 09:07:58 -07:00
Mark Adler 5ab9f47745 Add #define ZLIB_CONST option to use const in the z_stream interface. 
This permits compilers to check for the proper treatment of next_in and
msg in the z_stream structure.  This is an option instead of the default
in order to preserve backward compatibility.  Some applications make use
of the z_stream structure outside of zlib, and perform operations such
as free(strm->next_in), which would not be permitted when next_in is
const.  The #define ZLIB_CONST needs to precede the #include "zlib.h">,
in order to make next_in and msg const pointers in the z_stream type.
 2011-10-18 23:05:37 -07:00
Mark Adler 77b47d55f1 Add undocumented inflateResetKeep() function for CAB file decoding. 
The Microsoft CAB file format compresses each block with completed
deflate streams that depend on the sliding window history of the
previous block in order to decode.  inflateResetKeep() does what
inflateReset() does, except the sliding window history from the
previous inflate operation is retained.
 2011-10-07 23:13:37 -07:00
Mark Adler f442c1e89e Add a ./config --solo option to make zlib subset with no libary use 
A common request has been the ability to compile zlib to require no
other libraries.  This --solo option provides that ability.  The price
is that the gz*, compress*, and uncompress functions are eliminated,
and that the user must provide memory allocation and free routines to
deflate and inflate when initializing.
 2011-10-07 02:11:56 -07:00
Mark Adler 26a99cd895 Add a transparent write mode to gzopen() when 'T' is in the mode. 2011-10-02 13:34:29 -07:00
Mark Adler 3c9d261809 Correct documentation of gzdirect() since junk at end now ignored. 2011-10-02 12:13:50 -07:00
Mark Adler be959acf80 Clarify how gzopen() appends in zlib.h comments. 2011-10-02 12:09:29 -07:00
Mark Adler 00c836e325 Merge vestigial vsnprintf determination from zutil.h to gzguts.h. 
This also moves some of the same from zconf.h to gzguts.h. A new
function, gzflags(), was created to pass the compilation flags
related to vsnprintf usage back to zlibCompileFlags() in zutil.c.
In the process, various compiler configuration files were updated
to include gzflags(), as well as the new gzgetc_() function added
when the gzgetc() macro was introduced in a previous patch.
 2011-10-02 11:15:00 -07:00
Mark Adler 8768ba98af Fix gzclose() to return the actual error last encountered. 2011-09-30 22:19:12 -07:00
Mark Adler acfc85772a Change gzgetc() to a macro for speed (~40% speedup in testing). 2011-09-26 22:50:28 -07:00
Mark Adler a9ae24b653 Change gzread() and related to ignore junk after gzip streams. 
Previously the new gz* functions (introduced in 1.2.4) would read and
return raw data after the last gzip stream.  This is inconsistent with
the behavior of gzip and the previous versions of zlib.  Now when one
or more gzip streams have been decoded from the file, which is then
followed by data that is not a gzip stream (as detemined by not finding
the magic header), then that subsequent trailing garbage is ignored,
and no error is returned.
 2011-09-24 10:26:07 -07:00
Mark Adler d6cbbd5c64 Change version numbers to 1.2.5.2 and release dates 
Also added "-motley" to ZLIB_VERSION in zlib.h, so that versions
in-between 1.2.5.1 and 1.2.5.2 that are pulled down from github
can be identified as such if bugs are reported on them.
 2011-09-11 11:16:41 -07:00
Mark Adler 10daf0d4d7 zlib 1.2.5.1 2011-09-11 11:04:49 -07:00
Mark Adler 9712272c78 zlib 1.2.5 2011-09-09 23:35:10 -07:00
Mark Adler 7301420248 zlib 1.2.4.5 2011-09-09 23:34:55 -07:00
Mark Adler a7d70663cf zlib 1.2.4.4 2011-09-09 23:34:45 -07:00
Mark Adler f4498bea28 zlib 1.2.4.3 2011-09-09 23:34:38 -07:00
Mark Adler 7147f24cd7 zlib 1.2.4.2 2011-09-09 23:34:30 -07:00
Mark Adler 05d47d2627 zlib 1.2.4.1 2011-09-09 23:34:22 -07:00
Mark Adler a1141160bc zlib 1.2.4 2011-09-09 23:33:59 -07:00
Mark Adler 59ca2179ff zlib 1.2.4-pre2 2011-09-09 23:33:23 -07:00
Mark Adler 67cc20d004 zlib 1.2.4-pre1 2011-09-09 23:32:36 -07:00
Mark Adler 7751bd4c71 zlib 1.2.3.9 2011-09-09 23:27:26 -07:00
Mark Adler e0ff940e1a zlib 1.2.3.8 2011-09-09 23:27:17 -07:00
Mark Adler 7df877eccd zlib 1.2.3.7 2011-09-09 23:27:08 -07:00
Mark Adler dc5a43ebfa zlib 1.2.3.6 2011-09-09 23:26:58 -07:00
Mark Adler d004b04783 zlib 1.2.3.5 2011-09-09 23:26:49 -07:00
Mark Adler f6194ef39a zlib 1.2.3.4 2011-09-09 23:26:40 -07:00
Mark Adler 639be99788 zlib 1.2.3.3 2011-09-09 23:26:29 -07:00
Mark Adler d6231142d2 zlib 1.2.3.2 2011-09-09 23:25:38 -07:00
Mark Adler b1c19ca6d8 zlib 1.2.3.1 2011-09-09 23:25:27 -07:00
Mark Adler abf180a067 zlib 1.2.3 2011-09-09 23:25:17 -07:00
Mark Adler 9c3a583021 zlib 1.2.2.4 2011-09-09 23:24:52 -07:00
Mark Adler 6b8233bfe0 zlib 1.2.2.3 2011-09-09 23:24:43 -07:00
Mark Adler 0484693e17 zlib 1.2.2.2 2011-09-09 23:24:33 -07:00
Mark Adler 9811b53dd9 zlib 1.2.2.1 2011-09-09 23:24:24 -07:00
Mark Adler 79fbcdc939 zlib 1.2.2 2011-09-09 23:24:02 -07:00
Mark Adler 7a6955760b zlib 1.2.1.2 2011-09-09 23:23:45 -07:00
Mark Adler f0e76a6634 zlib 1.2.1.1 2011-09-09 23:23:38 -07:00
Mark Adler 7a33a861d1 zlib 1.2.1 2011-09-09 23:23:27 -07:00
Mark Adler a2506218cd zlib 1.2.0.8 2011-09-09 23:23:14 -07:00
Mark Adler b97ec631c6 zlib 1.2.0.7 2011-09-09 23:23:01 -07:00
Mark Adler f81ba93d4a zlib 1.2.0.6 2011-09-09 23:22:48 -07:00
Mark Adler 4b5a43a219 zlib 1.2.0.5 2011-09-09 23:22:37 -07:00
Mark Adler 086e982175 zlib 1.2.0.4 2011-09-09 23:22:30 -07:00
Mark Adler 85e7d7d9ba zlib 1.2.0.3 2011-09-09 23:22:21 -07:00
Mark Adler 8e34b3a802 zlib 1.2.0.2 2011-09-09 23:22:10 -07:00
Mark Adler 13a294f044 zlib 1.2.0.1 2011-09-09 23:21:57 -07:00
Mark Adler 7c2a874e50 zlib 1.2.0 2011-09-09 23:21:47 -07:00
Mark Adler a383133c4e zlib 1.1.4 2011-09-09 23:20:42 -07:00
Mark Adler 14763ac7c6 zlib 1.1.3 2011-09-09 23:20:29 -07:00
Mark Adler c34c1fcbb1 zlib 1.1.2 2011-09-09 23:20:15 -07:00
Mark Adler 02b6cf579f zlib 1.1.1 2011-09-09 23:20:07 -07:00
Mark Adler 965fe72aed zlib 1.1.0 2011-09-09 23:19:55 -07:00
Mark Adler b8c9ecb076 zlib 1.0.9 2011-09-09 23:19:21 -07:00
Mark Adler 6759211ad8 zlib 1.0.8 2011-09-09 23:18:57 -07:00
Mark Adler 7850e4e406 zlib 1.0.7 2011-09-09 23:17:33 -07:00
Mark Adler ebd3c2c0e7 zlib 1.0.5 2011-09-09 23:17:17 -07:00
Mark Adler ff11b0a61f zlib 1.0.4 2011-09-09 23:17:02 -07:00
Mark Adler e26a448e96 zlib 1.0.2 2011-09-09 23:15:17 -07:00
Mark Adler 423eb40306 zlib 1.0.1 2011-09-09 23:14:39 -07:00
Mark Adler 8a2acbffc8 zlib 1.0-pre 2011-09-09 23:13:27 -07:00
Mark Adler 56bcb184fa zlib 0.99 2011-09-09 23:11:37 -07:00
Mark Adler 25e5325501 zlib 0.95 2011-09-09 23:10:21 -07:00
Mark Adler 23c69f1069 zlib 0.94 2011-09-09 23:09:18 -07:00
Mark Adler 6b834a58bd zlib 0.93 2011-09-09 23:08:28 -07:00
Mark Adler bdde4e09d2 zlib 0.92 2011-09-09 23:08:07 -07:00
Mark Adler 1c71d8b13b zlib 0.91 2011-09-09 23:07:35 -07:00
Mark Adler 64b2e89203 zlib 0.9 2011-09-09 23:06:52 -07:00
Mark Adler 4ca984fb44 zlib 0.8 2011-09-09 23:03:14 -07:00
Mark Adler 913afb9174 zlib 0.79 2011-09-09 22:52:17 -07:00
Mark Adler bcf78a2097 zlib 0.71 2011-09-09 22:36:31 -07:00