/// <summary>Construct a MissingObjectException for the specified object id.</summary>
/// <remarks>
/// Construct a MissingObjectException for the specified object id. Expected
/// type is reported to simplify tracking down the problem.
/// </remarks>
/// <param name="id">SHA-1</param>
/// <param name="candidates">the candidate matches returned by the ObjectReader.</param>
public AmbiguousObjectException(AbbreviatedObjectId id, ICollection<ObjectId> candidates
) : base(MessageFormat.Format(JGitText.Get().ambiguousObjectAbbreviation, id.Name
))
{
this.missing = id;
this.candidates = candidates;
}
/// <exception cref="System.IO.IOException"></exception>
public override ICollection<ObjectId> Resolve(AbbreviatedObjectId id)
{
if (id.IsComplete)
{
return Sharpen.Collections.Singleton(id.ToObjectId());
}
HashSet<ObjectId> matches = new HashSet<ObjectId>();
db.Resolve(matches, id);
return matches;
}
/// <summary>Construct a MissingObjectException for the specified object id.</summary>
/// <remarks>
/// Construct a MissingObjectException for the specified object id. Expected
/// type is reported to simplify tracking down the problem.
/// </remarks>
/// <param name="id">SHA-1</param>
/// <param name="type">object type</param>
public MissingObjectException(AbbreviatedObjectId id, int type) : base(MessageFormat
.Format(JGitText.Get().missingObject, Constants.TypeString(type), id.Name))
{
missing = null;
}
/// <exception cref="System.IO.IOException"></exception>
internal override void Resolve(ICollection<ObjectId> matches, AbbreviatedObjectId
id)
{
// In theory we could accelerate the loose object scan using our
// unpackedObjects map, but its not worth the huge code complexity.
// Scanning a single loose directory is fast enough, and this is
// unlikely to be called anyway.
//
wrapped.Resolve(matches, id);
}
/// <exception cref="System.IO.IOException"></exception>
public override void Resolve(ICollection<ObjectId> matches, AbbreviatedObjectId id
, int matchLimit)
{
int[] data = names[id.FirstByte];
int max = (int)(((uint)offset32[id.FirstByte].Length) >> 2);
int high = max;
if (high == 0)
{
return;
}
int low = 0;
do
{
int p = (int)(((uint)(low + high)) >> 1);
int cmp = id.PrefixCompare(data, IdOffset(p));
if (cmp < 0)
{
high = p;
}
else
{
if (cmp == 0)
{
// We may have landed in the middle of the matches. Move
// backwards to the start of matches, then walk forwards.
//
while (0 < p && id.PrefixCompare(data, IdOffset(p - 1)) == 0)
{
p--;
}
for (; p < max && id.PrefixCompare(data, IdOffset(p)) == 0; p++)
{
matches.AddItem(ObjectId.FromRaw(data, IdOffset(p)));
if (matches.Count > matchLimit)
{
break;
}
}
return;
}
else
{
low = p + 1;
}
}
}
while (low < high);
}
/// <exception cref="System.IO.IOException"></exception>
internal override void Resolve(ICollection<ObjectId> matches, AbbreviatedObjectId
id)
{
// Go through the packs once. If we didn't find any resolutions
// scan for new packs and check once more.
//
int oldSize = matches.Count;
ObjectDirectory.PackList pList = packList.Get();
for (; ; )
{
foreach (PackFile p in pList.packs)
{
try
{
p.Resolve(matches, id, RESOLVE_ABBREV_LIMIT);
}
catch (IOException)
{
// Assume the pack is corrupted.
//
RemovePack(p);
}
if (matches.Count > RESOLVE_ABBREV_LIMIT)
{
return;
}
}
if (matches.Count == oldSize)
{
ObjectDirectory.PackList nList = ScanPacks(pList);
if (nList == pList || nList.packs.Length == 0)
{
break;
}
pList = nList;
continue;
}
break;
}
string fanOut = Sharpen.Runtime.Substring(id.Name, 0, 2);
string[] entries = new FilePath(GetDirectory(), fanOut).List();
if (entries != null)
{
foreach (string e in entries)
{
if (e.Length != Constants.OBJECT_ID_STRING_LENGTH - 2)
{
continue;
}
try
{
ObjectId entId = ObjectId.FromString(fanOut + e);
if (id.PrefixCompare(entId) == 0)
{
matches.AddItem(entId);
}
}
catch (ArgumentException)
{
continue;
}
if (matches.Count > RESOLVE_ABBREV_LIMIT)
{
return;
}
}
}
foreach (FileObjectDatabase.AlternateHandle alt in MyAlternates())
{
alt.db.Resolve(matches, id);
if (matches.Count > RESOLVE_ABBREV_LIMIT)
{
return;
}
}
}
/// <exception cref="System.IO.IOException"></exception> internal abstract void Resolve(ICollection<ObjectId> matches, AbbreviatedObjectId id);
/// <summary>
/// Parse a tree object into a
/// <see cref="NoteBucket">NoteBucket</see>
/// instance.
/// The type of note tree is automatically detected by examining the items
/// within the tree, and allocating the proper storage type based on the
/// first note-like entry encountered. Since the method parses by guessing
/// the type on the first element, malformed note trees can be read as the
/// wrong type of tree.
/// This method is not recursive, it parses the one tree given to it and
/// returns the bucket. If there are subtrees for note storage, they are
/// setup as lazy pointers that will be resolved at a later time.
/// </summary>
/// <param name="prefix">
/// common hex digits that all notes within this tree share. The
/// root tree has
/// <code>prefix.length() == 0</code>
/// , the first-level
/// subtrees should be
/// <code>prefix.length()==2</code>
/// , etc.
/// </param>
/// <param name="treeId">the tree to read from the repository.</param>
/// <param name="reader">reader to access the tree object.</param>
/// <returns>bucket to holding the notes of the specified tree.</returns>
/// <exception cref="System.IO.IOException">
/// <code>treeId</code>
/// cannot be accessed.
/// </exception>
internal static InMemoryNoteBucket Parse(AbbreviatedObjectId prefix, ObjectId treeId
, ObjectReader reader)
{
return new NGit.Notes.NoteParser(prefix, reader, treeId).Parse();
}
/// <exception cref="NGit.Errors.IncorrectObjectTypeException"></exception>
/// <exception cref="System.IO.IOException"></exception>
private NoteParser(AbbreviatedObjectId p, ObjectReader r, ObjectId t) : base(Constants.EncodeASCII
(p.Name), r, t)
{
prefix = p;
// Our path buffer has a '/' that we don't want after the prefix.
// Drop it by shifting the path down one position.
pathPadding = 0 < prefix.Length ? 1 : 0;
if (0 < pathPadding)
{
System.Array.Copy(path, 0, path, pathPadding, prefix.Length);
}
}
/// <summary>Tests if this ObjectId starts with the given abbreviation.</summary>
/// <remarks>Tests if this ObjectId starts with the given abbreviation.</remarks>
/// <param name="abbr">the abbreviation.</param>
/// <returns>true if this ObjectId begins with the abbreviation; else false.</returns>
public virtual bool StartsWith(AbbreviatedObjectId abbr)
{
return abbr.PrefixCompare(this) == 0;
}
