X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=TODO;h=604ea4993e2e9658afaba268dc2b2cdc980eb7da;hb=b1d08ed0e26f0a8c81910c5950275d28ce06bd9c;hp=1335e632d18b22326f8a6e46486f7160600b12aa;hpb=23f33f1ad8f0a20de5cfcf473ba813c5731ea97b;p=debian%2Fgzip diff --git a/TODO b/TODO index 1335e63..604ea49 100644 --- a/TODO +++ b/TODO @@ -2,6 +2,13 @@ TODO file for gzip. Some of the planned features include: +- Remove some of the old porting cruft, since we no longer support it. + +- Separate out the shell scripts like gzexe into a new little package; + these scripts are less used and less reliable and should be optional. + +- Internationalize by using gettext and setlocale. + - Structure the sources so that the compression and decompression code form a library usable by any program, and write both gzip and zip on top of this library. This would ideally be a reentrant (thread safe) @@ -24,16 +31,14 @@ Some of the planned features include: should be done in chunks to reduce memory usage.) - Add a super-fast compression method, suitable for implementing - file systems with transparent compression. One problem is that the - best candidate (lzrw1) is patented twice (Waterworth 4,701,745 - and Gibson & Graybill 5,049,881). The lzrw series of algorithms - are available by ftp in ftp.adelaide.edu.au:/pub/compression/lzrw*. + file systems with transparent compression. The lzrw series of algorithms + are available at http://www.ross.net/compression/. - Add a super-tight (but slow) compression method, suitable for long - term archives. One problem is that the best versions of arithmetic - coding are patented (4,286,256 4,295,125 4,463,342 4,467,317 - 4,633,490 4,652,856 4,891,643 4,905,297 4,935,882 4,973,961 - 5,023,611 5,025,258). + term archives. See, for example, US Patents 4,286,256 4,295,125 + 4,463,342 4,467,317 4,633,490 4,652,856 4,891,643 4,905,297 + 4,935,882 4,973,961 5,023,611 5,025,258, which have all expired. + More recent patent-free techniques may also be available. Note: I will introduce new compression methods only if they are significantly better in either speed or compression ratio than the @@ -50,9 +55,26 @@ Some of the planned features include: failure of a complete sector. Each block could be extracted independently, but this reduces the compression ratio. + For one possible approach to this, please see: + + https://ozlabs.org/~rusty/gzip.rsync.patch + - Use a larger window size to deal with some large redundant files that 'compress' currently handles better than gzip. - Implement the -e (encrypt) option. - + Send comments to . + + +======================================================================== + +Copyright (C) 1999, 2001, 2006, 2009-2017 Free Software Foundation, Inc. +Copyright (C) 1992, 1993 Jean-loup Gailly + +Permission is granted to copy, distribute and/or modify this document +under the terms of the GNU Free Documentation License, Version 1.3 or +any later version published by the Free Software Foundation; with no +Invariant Sections, with no Front-Cover Texts, and with no Back-Cover +Texts. A copy of the license is included in the ``GNU Free +Documentation License'' file as part of this distribution.