./misc/bsdiff, Size efficient binary diff and patch tools

[ CVSweb ] [ Homepage ] [ RSS ] [ Required by ] [ Add to tracker ]

Branch: pkgsrc-2017Q2, Version: 4.3, Package name: bsdiff-4.3, Maintainer: pkgsrc-users

Bsdiff and bspatch are tools for building and applying patches to binary
files. By using suffix sorting (specifically, Larsson and Sadakane's
qsufsort) and taking advantage of how executable files change, bsdiff
routinely produces binary patches 50-80% smaller than those produced by
Xdelta, and 15% smaller than those produced by .RTPatch (a $2750/seat
commercial patch tool).

If n is the size of the old file and m is the size of the new file, bsdiff
runs in O((n+m) log n) time; on a 200MHz Pentium Pro, building a binary
patch for a 4MB file takes about 90 seconds. bspatch runs in O(n+m) time;
on the same machine, applying that patch takes about two seconds.

Master sites:

SHA1: 0c0a89d604fc55ef2b5e69cd18372b2972edd8b8
RMD160: 27bb255b5dd5aa56d3a076dac9ca76d238a79a04
Filesize: 5.605 KB

Version history: (Expand)