/// <exception cref="System.IO.IOException"></exception>
private void OnOpenPack()
{
PackIndex idx = Idx();
byte[] buf = new byte[20];
fd.Seek(0);
fd.ReadFully(buf, 0, 12);
if (RawParseUtils.Match(buf, 0, Constants.PACK_SIGNATURE) != 4)
{
throw new IOException(JGitText.Get().notAPACKFile);
}
long vers = NB.DecodeUInt32(buf, 4);
long packCnt = NB.DecodeUInt32(buf, 8);
if (vers != 2 && vers != 3)
{
throw new IOException(MessageFormat.Format(JGitText.Get().unsupportedPackVersion,
vers));
}
if (packCnt != idx.GetObjectCount())
{
throw new PackMismatchException(MessageFormat.Format(JGitText.Get().packObjectCountMismatch
, packCnt, idx.GetObjectCount(), GetPackFile()));
}
fd.Seek(length - 20);
fd.ReadFully(buf, 0, 20);
if (!Arrays.Equals(buf, packChecksum))
{
throw new PackMismatchException(MessageFormat.Format(JGitText.Get().packObjectCountMismatch
, ObjectId.FromRaw(buf).Name, ObjectId.FromRaw(idx.packChecksum).Name, GetPackFile
()));
}
}
private void AssertContent(PackIndex pi, IList <ObjectId> expected)
{
NUnit.Framework.Assert.AreEqual(expected.Count, pi.GetObjectCount(), "Pack index has wrong size."
);
for (int i = 0; i < pi.GetObjectCount(); i++)
{
NUnit.Framework.Assert.IsTrue(expected.Contains(pi.GetObjectId(i)), "Pack index didn't contain the expected id "
+ pi.GetObjectId(i));
}
}
public virtual void TestFindNextOffset()
{
long offset = FindFirstOffset();
NUnit.Framework.Assert.IsTrue(offset > 0);
for (int i = 0; i < idx.GetObjectCount(); i++)
{
long newOffset = reverseIdx.FindNextOffset(offset, long.MaxValue);
NUnit.Framework.Assert.IsTrue(newOffset > offset);
if (i == idx.GetObjectCount() - 1)
{
NUnit.Framework.Assert.AreEqual(newOffset, long.MaxValue);
}
else
{
NUnit.Framework.Assert.AreEqual(newOffset, idx.FindOffset(reverseIdx.FindObject(newOffset
)));
}
offset = newOffset;
}
}
public virtual void TestWriteIndex()
{
config.SetIndexVersion(2);
WriteVerifyPack4(false);
FilePath packFile = pack.GetPackFile();
string name = packFile.GetName();
string @base = Sharpen.Runtime.Substring(name, 0, name.LastIndexOf('.'));
FilePath indexFile = new FilePath(packFile.GetParentFile(), @base + ".idx");
// Validate that IndexPack came up with the right CRC32 value.
PackIndex idx1 = PackIndex.Open(indexFile);
NUnit.Framework.Assert.IsTrue(idx1 is PackIndexV2);
NUnit.Framework.Assert.AreEqual(unchecked ((long)(0x4743F1E4L)), idx1.FindCRC32(ObjectId
.FromString("82c6b885ff600be425b4ea96dee75dca255b69e7")));
// Validate that an index written by PackWriter is the same.
FilePath idx2File = new FilePath(indexFile.GetAbsolutePath() + ".2");
FileOutputStream @is = new FileOutputStream(idx2File);
try
{
writer.WriteIndex(@is);
}
finally
{
@is.Close();
}
PackIndex idx2 = PackIndex.Open(idx2File);
NUnit.Framework.Assert.IsTrue(idx2 is PackIndexV2);
NUnit.Framework.Assert.AreEqual(idx1.GetObjectCount(), idx2.GetObjectCount());
NUnit.Framework.Assert.AreEqual(idx1.GetOffset64Count(), idx2.GetOffset64Count());
for (int i = 0; i < idx1.GetObjectCount(); i++)
{
ObjectId id = idx1.GetObjectId(i);
NUnit.Framework.Assert.AreEqual(id, idx2.GetObjectId(i));
NUnit.Framework.Assert.AreEqual(idx1.FindOffset(id), idx2.FindOffset(id));
NUnit.Framework.Assert.AreEqual(idx1.FindCRC32(id), idx2.FindCRC32(id));
}
}
public virtual void TestKeepFiles()
{
BranchBuilder bb = tr.Branch("refs/heads/master");
bb.Commit().Add("A", "A").Add("B", "B").Create();
stats = gc.GetStatistics();
NUnit.Framework.Assert.AreEqual(4, stats.numberOfLooseObjects);
NUnit.Framework.Assert.AreEqual(0, stats.numberOfPackedObjects);
NUnit.Framework.Assert.AreEqual(0, stats.numberOfPackFiles);
gc.Gc();
stats = gc.GetStatistics();
NUnit.Framework.Assert.AreEqual(0, stats.numberOfLooseObjects);
NUnit.Framework.Assert.AreEqual(4, stats.numberOfPackedObjects);
NUnit.Framework.Assert.AreEqual(1, stats.numberOfPackFiles);
Iterator <PackFile> packIt = ((ObjectDirectory)repo.ObjectDatabase).GetPacks().Iterator
();
PackFile singlePack = packIt.Next();
NUnit.Framework.Assert.IsFalse(packIt.HasNext());
FilePath keepFile = new FilePath(singlePack.GetPackFile().GetPath() + ".keep");
NUnit.Framework.Assert.IsFalse(keepFile.Exists());
NUnit.Framework.Assert.IsTrue(keepFile.CreateNewFile());
bb.Commit().Add("A", "A2").Add("B", "B2").Create();
stats = gc.GetStatistics();
NUnit.Framework.Assert.AreEqual(4, stats.numberOfLooseObjects);
NUnit.Framework.Assert.AreEqual(4, stats.numberOfPackedObjects);
NUnit.Framework.Assert.AreEqual(1, stats.numberOfPackFiles);
gc.Gc();
stats = gc.GetStatistics();
NUnit.Framework.Assert.AreEqual(0, stats.numberOfLooseObjects);
NUnit.Framework.Assert.AreEqual(8, stats.numberOfPackedObjects);
NUnit.Framework.Assert.AreEqual(2, stats.numberOfPackFiles);
// check that no object is packed twice
Iterator <PackFile> packs = ((ObjectDirectory)repo.ObjectDatabase).GetPacks().Iterator
();
PackIndex ind1 = packs.Next().GetIndex();
NUnit.Framework.Assert.AreEqual(4, ind1.GetObjectCount());
PackIndex ind2 = packs.Next().GetIndex();
NUnit.Framework.Assert.AreEqual(4, ind2.GetObjectCount());
foreach (PackIndex.MutableEntry e in ind1)
{
if (ind2.HasObject(e.ToObjectId()))
{
NUnit.Framework.Assert.IsFalse(ind2.HasObject(e.ToObjectId()), "the following object is in both packfiles: "
+ e.ToObjectId());
}
}
}
/// <summary>
/// Create reverse index from straight/forward pack index, by indexing all
/// its entries.
/// </summary>
/// <remarks>
/// Create reverse index from straight/forward pack index, by indexing all
/// its entries.
/// </remarks>
/// <param name="packIndex">forward index - entries to (reverse) index.</param>
public PackReverseIndex(PackIndex packIndex)
{
index = packIndex;
long cnt = index.GetObjectCount();
long n64 = index.GetOffset64Count();
long n32 = cnt - n64;
if (n32 > int.MaxValue || n64 > int.MaxValue || cnt > unchecked ((long)(0xffffffffL
)))
{
throw new ArgumentException(JGitText.Get().hugeIndexesAreNotSupportedByJgitYet);
}
offsets32 = new int[(int)n32];
offsets64 = new long[(int)n64];
nth32 = new int[offsets32.Length];
nth64 = new int[offsets64.Length];
int i32 = 0;
int i64 = 0;
foreach (PackIndex.MutableEntry me in index)
{
long o = me.GetOffset();
if (o < int.MaxValue)
{
offsets32[i32++] = (int)o;
}
else
{
offsets64[i64++] = o;
}
}
Arrays.Sort(offsets32);
Arrays.Sort(offsets64);
int nth = 0;
foreach (PackIndex.MutableEntry me_1 in index)
{
long o = me_1.GetOffset();
if (o < int.MaxValue)
{
nth32[System.Array.BinarySearch(offsets32, (int)o)] = nth++;
}
else
{
nth64[System.Array.BinarySearch(offsets64, o)] = nth++;
}
}
}
