Studying made me busy last week, but I'm back:
with another GSoC series, adding some usable feature this time.
At first, some stuff was still missing to produce packs, mostly
raw-data access related and ObjectWalk related.
Finally, we've got some support for pack writing! It's not that
power that C git version offers, but something usable. Delta
generation is not supported. Although we can reuse deltas and objects,
and support all other (I hope) options of git-pack-objects directly or
indirectly, most importantly --thin.
Pack writing and some other features are tested, seem to work.
This implementation of packing is not a very valuable thing directly
(achieving efficient storage), however it's a base for enhancements
and can be used for sending packs over net (with some assumptions).
It's more a "repacking" than "packing" tool.
So... I'm switching now to push implementation. If time allows,
delta-algorithms will be added later.
Robin,
this series is based on master of egit.git when I saw it last time
before repo.or.cz went down (9354293) ;) I'll add packwriter branch
to my repo when server is up.
Marek Zawirski (20):
Fix typo in PackIndexV2
Integer versions of copyRawTo() and fromRaw() in ObjectId
Add openObjectInAllPacks() to Repository, exposing packed objects
storage
WindowedFile fragments copying: copyToStream()
Reverse pack index implementation: PackReverseIndex
Tests for PackReverseIndex
Refactor PackIndexV2 - extract binarySearchLevelTwo()
CRC32 support for PackIndex
CRC32 PackIndex tests
Format PackedObjectLoader class
Format UnpackedObjectLoader class
Format DeltaOfsPackedObjectLoader class
Raw-data operations in ObjectLoaders and PackFile
Add hasRevSort() in RevWalk for faster sorting strategy checking
Refactor getRevSort() calls to hasRevSort()
Support for RevSort.BOUNDARY in ObjectWalk
Rename confusing objects field in ObjectWalk
New CountingOutputStream class - stream decorator
Simplified implementation of pack creation: PackWriter
PackWriter test suite
.../tst/org/spearce/jgit/lib/PackIndexTest.java | 10 +
.../tst/org/spearce/jgit/lib/PackIndexV1Test.java | 19 +
.../tst/org/spearce/jgit/lib/PackIndexV2Test.java | 30 +
.../org/spearce/jgit/lib/PackReverseIndexTest.java | 115 +++
.../tst/org/spearce/jgit/lib/PackWriterTest.java | 454 ++++++++++
org.spearce.jgit.test/tst/pack-huge.idx | Bin 0 -> 2368 bytes
.../src/org/spearce/jgit/lib/AnyObjectId.java | 16 +
.../jgit/lib/DeltaOfsPackedObjectLoader.java | 24 +-
.../spearce/jgit/lib/DeltaPackedObjectLoader.java | 9 +-
.../jgit/lib/DeltaRefPackedObjectLoader.java | 15 +-
.../src/org/spearce/jgit/lib/ObjectId.java | 26 +
.../src/org/spearce/jgit/lib/ObjectLoader.java | 24 +
.../src/org/spearce/jgit/lib/PackFile.java | 85 ++-
.../src/org/spearce/jgit/lib/PackIndex.java | 23 +
.../src/org/spearce/jgit/lib/PackIndexV1.java | 10 +
.../src/org/spearce/jgit/lib/PackIndexV2.java | 73 +-
.../src/org/spearce/jgit/lib/PackReverseIndex.java | 179 ++++
.../src/org/spearce/jgit/lib/PackWriter.java | 882 ++++++++++++++++++++
.../org/spearce/jgit/lib/PackedObjectLoader.java | 47 +-
.../src/org/spearce/jgit/lib/Repository.java | 42 +
.../org/spearce/jgit/lib/UnpackedObjectLoader.java | 26 +-
.../spearce/jgit/lib/WholePackedObjectLoader.java | 20 +-
.../src/org/spearce/jgit/lib/WindowedFile.java | 43 +
.../src/org/spearce/jgit/revwalk/ObjectWalk.java | 40 +-
.../src/org/spearce/jgit/revwalk/RevSort.java | 5 +-
.../src/org/spearce/jgit/revwalk/RevWalk.java | 11 +
.../org/spearce/jgit/revwalk/StartGenerator.java | 14 +-
.../spearce/jgit/util/CountingOutputStream.java | 89 ++
28 files changed, 2258 insertions(+), 73 deletions(-)
create mode 100644 org.spearce.jgit.test/tst/org/spearce/jgit/lib/PackReverseIndexTest.java
create mode 100644 org.spearce.jgit.test/tst/org/spearce/jgit/lib/PackWriterTest.java
create mode 100644 org.spearce.jgit.test/tst/pack-huge.idx
create mode 100644 org.spearce.jgit/src/org/spearce/jgit/lib/PackReverseIndex.java
create mode 100644 org.spearce.jgit/src/org/spearce/jgit/lib/PackWriter.java
create mode 100644 org.spearce.jgit/src/org/spearce/jgit/util/CountingOutputStream.java
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