diff options
Diffstat (limited to 'NEWS')
| -rw-r--r-- | NEWS | 47 |
1 files changed, 22 insertions, 25 deletions
@@ -1,34 +1,31 @@ -Changes in version 1.7: +Changes in version 1.8: -When compressing on a 32 bit system, plzip now tries to limit the memory -use to under 2.22 GiB (4 worker threads at level -9) by reducing the -number of threads below the system's default. +The new options '--in-slots' and '--out-slots', setting the number of input +and output packets buffered during streamed decompression, have been added. +Increasing the number of packets may increase decompression speed, but +requires more memory. -The option '--loose-trailing', has been added. +The default number of input packets buffered per worker thread when +decompressing from non-seekable input has been increased from 2 to 4. -The test used by plzip to discriminate trailing data from a corrupt -header in multimember regular (seekable) files has been improved to a -Hamming distance (HD) of 3, and the 3 bit flips must happen in different -magic bytes for the test to fail. As a consequence some kinds of files -no longer can be appended to a lzip file as trailing data unless the -'--loose-trailing' option is used when decompressing. -Lzlib 1.10 or newer is required for this test to work on non-seekable -files. -Lziprecover can be used to remove conflicting trailing data from a file. +The default number of output packets buffered per worker thread when +decompressing to non-seekable output has been increased from 32 to 64. -The 'bits/byte' ratio has been replaced with the inverse compression -ratio in the output. +Detection of forbidden combinations of characters in trailing data has been +improved. -The progress of decompression is now shown at verbosity level 2 (-vv) or -higher. +Errors are now also checked when closing the input file. -Progress of (de)compression is only shown if stderr is a terminal. +The descriptions of '-0..-9', '-m' and '-s' in the manual have been +improved. -A second '.lz' extension is no longer added to the argument of '-o' if -it already ends in '.lz' or '.tlz'. +The configure script now accepts the option '--with-mingw' to enable the +compilation of plzip under MS Windows (with the MinGW compiler). Use with +care. The Windows I/O functions used are not guaranteed to be thread safe. +(Code based on a patch by Hannes Domani). -The dictionary size is now shown at verbosity level 4 (-vvvv) when -decompressing or testing. +The configure script now accepts appending options to CXXFLAGS using the +syntax 'CXXFLAGS+=OPTIONS'. -The new chapter "Meaning of plzip's output", and a block diagram of -plzip have been added to the manual. +It has been documented in INSTALL the use of +CXXFLAGS+='-D __USE_MINGW_ANSI_STDIO' when compiling on MinGW. |