lp:~bdash/sparkle/delta-updates

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Bug #228450: Incremental Updates

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355. By Mark Rowe on 2009-06-04

Rework the BinaryDelta tool to use NSOperationQueue in order to be slightly more portable.
There's slightly less concurrency as a result as all archiving operations are now performed
serially on the main thread. Since these make up a small percentage of the overall runtime,
the increased portability makes this a reasonable tradeoff.

354. By Mark Rowe on 2009-06-04

Fix warnings and binary compatibility issues that crop up when building the BinaryDelta tool against different SDKs.

353. By Mark Rowe on 2009-06-04

Link against a static build of libxar as libxar.dylib didn't ship on Tiger.

352. By Mark Rowe on 2009-06-03

Add an unarchiver for the delta format so that Sparkle can successfully install the delta updates.

351. By Mark Rowe on 2009-06-03

Add support for parsing an extended <sparkle:deltas> element in the appcast that describes
the delta updates that are available for a given version.

The appcast would look a little something like the following:

<enclosure url="http://you.com/app/Your Great App 2.0.zip" sparkle:version="2.0" length="1623481" type="application/octet-stream" sparkle:dsaSignature="BAFJW4B6B1K1JyW30nbkBwainOzrN6EQuAh" />
<sparkle:deltas>
    <enclosure url="http://you.com/app/Your Great App 1.5 to 2.0.delta" sparkle:version="2.0" sparkle:deltaFrom="1.5" length="642381" type="application/octet-stream" sparkle:dsaSignature="MCa1JyW30nbkBwaC0CFBfeinOzrN6EQuAh=" />
    <enclosure url="http://you.com/app/Your Great App 1.4 to 2.0.delta" sparkle:version="2.0" sparkle:deltaFrom="1.4" length="928231" type="application/octet-stream" sparkle:dsaSignature="B6B1K1JyW30nbkBDBfeinOAszrN6Ea1JyW3" />
</sparkle:deltas>

350. By Mark Rowe on 2009-06-03

Add a command-line tool that can generate and apply a binary delta between two versions of an application.

The delta file is a custom format created from the xar container format. It describes the necessary
modifications to transform the contents of the old directory in to the contents of the new. Binary
diffs are used to compress the differences between large files such as Mach-O binaries. The binary
diffs are generated by bsdiff and applied via bspatch, both from bsdiff 4.3, the source of which is
included and used under a BSD-style license.

349. By Andy Matuschak on 2009-05-22

Fixing the behavior of one of the build scripts when run multiple times; thanks for the patch, Stuart.

348. By Andy Matuschak on 2009-05-19

Merging in a fix to a bug which caused the user agent string not to be null-terminated.

347. By Andy Matuschak on 2009-05-19

Added missing "Cancel Update" string.

346. By Andy Matuschak on 2009-05-08

Added Icelandic localization courtesy Steingrímur Árnason.