Árbore:
331a473f1a
11.0
12.0
12.1
12.2
13.0
13.1
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14.0
14.1
14.2
15.0
bedlam
bedlam-name-fixes
dive
erik
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master
misc-fixes
python-renames
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urchlay
user/aclemons/updates
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user/anddt/development/glm
user/anddt/development/gnustep-base
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user/anddt/misc/discount
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user/anddt/network/strongswan
user/anddt/network/umurmur
user/anddt/network/yt-dlp
user/anddt/network/znc
user/anddt/office/gnumeric
user/anddt/office/sigil
user/anddt/system/FontAwesome
user/anddt/system/conky
user/anddt/system/fakeroot
user/anddt/system/hplip-plugin
user/anddt/system/postgresql
user/anddt/system/testdisk
user/anddt/system/worker
user/anddt/system/xen
user/anddt/system/zzzfm
user/belka/updates
user/chris.willing/updates
user/dslackw/updates
user/elyk/updates
user/kingbeowulf/updates
user/mario/updates
user/ponce/updates
user/pprkut/updates
willysr
wxWidgets-wip
GPG-KEY
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B. Watson
93c9f3ba28
development/bsdiff: Update email address.
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%!s(int64=2) %!d(string=hai) anos | |
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| README | 3294fac462 development/bsdiff: Fix README. | %!s(int64=4) %!d(string=hai) anos |
| bsdiff.SlackBuild | 93c9f3ba28 development/bsdiff: Update email address. | %!s(int64=2) %!d(string=hai) anos |
| bsdiff.info | 93c9f3ba28 development/bsdiff: Update email address. | %!s(int64=2) %!d(string=hai) anos |
| slack-desc | 7e1284e7a9 development/bsdiff: New maintainer, tweaks. | %!s(int64=5) %!d(string=hai) anos |
README
bsdiff (binary diff/patch utility)
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).
These programs were originally named bdiff and bpatch, but
the large number of other programs using those names lead to
confusion; I'm not sure if the "bs" in refers to "binary software"
(because bsdiff produces exceptionally small patches for executable
files) or "bytewise subtraction" (which is the key to how well it
performs). Feel free to offer other suggestions.
bsdiff is quite memory-hungry. It requires max(17*n,9*n+m)+O(1) bytes
of memory, where n is the size of the old file and m is the size of
the new file. bspatch requires n+m+O(1) bytes.
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.
Providing that off_t is defined properly, bsdiff and bspatch support
files of up to 2^61-1 = 2Ei-1 bytes.
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).
These programs were originally named bdiff and bpatch, but
the large number of other programs using those names lead to
confusion; I'm not sure if the "bs" in refers to "binary software"
(because bsdiff produces exceptionally small patches for executable
files) or "bytewise subtraction" (which is the key to how well it
performs). Feel free to offer other suggestions.
bsdiff is quite memory-hungry. It requires max(17*n,9*n+m)+O(1) bytes
of memory, where n is the size of the old file and m is the size of
the new file. bspatch requires n+m+O(1) bytes.
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.
Providing that off_t is defined properly, bsdiff and bspatch support
files of up to 2^61-1 = 2Ei-1 bytes.