/// <summary>Create a repository using the local file system.</summary>
/// <remarks>Create a repository using the local file system.</remarks>
/// <param name="options">description of the repository's important paths.</param>
/// <exception cref="System.IO.IOException">
/// the user configuration file or repository configuration file
/// cannot be accessed.
/// </exception>
protected internal FileRepository(BaseRepositoryBuilder options) : base(options)
{
systemConfig = SystemReader.GetInstance().OpenSystemConfig(null, FileSystem);
userConfig = SystemReader.GetInstance().OpenUserConfig(systemConfig, FileSystem);
repoConfig = new FileBasedConfig(userConfig, FileSystem.Resolve(Directory, Constants
.CONFIG), FileSystem);
LoadSystemConfig();
LoadUserConfig();
LoadRepoConfig();
repoConfig.AddChangeListener(new _ConfigChangedListener_171(this));
refs = new RefDirectory(this);
objectDatabase = new ObjectDirectory(repoConfig, options.GetObjectDirectory(), options
.GetAlternateObjectDirectories(), FileSystem);
//
//
//
if (objectDatabase.Exists())
{
long repositoryFormatVersion = ((FileBasedConfig)GetConfig()).GetLong(ConfigConstants
.CONFIG_CORE_SECTION, null, ConfigConstants.CONFIG_KEY_REPO_FORMAT_VERSION, 0);
if (repositoryFormatVersion > 0)
{
throw new IOException(MessageFormat.Format(JGitText.Get().unknownRepositoryFormat2
, Sharpen.Extensions.ValueOf(repositoryFormatVersion)));
}
}
if (!IsBare)
{
snapshot = FileSnapshot.Save(GetIndexFile());
}
}
/// <exception cref="System.IO.IOException"></exception>
private RefDirectory.PackedRefList ReadPackedRefs()
{
FileSnapshot snapshot = FileSnapshot.Save(packedRefsFile);
BufferedReader br;
MessageDigest digest = Constants.NewMessageDigest();
try
{
br = new BufferedReader(new InputStreamReader(new DigestInputStream(new FileInputStream
(packedRefsFile), digest), Constants.CHARSET));
}
catch (FileNotFoundException)
{
// Ignore it and leave the new list empty.
return(RefDirectory.PackedRefList.NO_PACKED_REFS);
}
try
{
return(new RefDirectory.PackedRefList(ParsePackedRefs(br), snapshot, ObjectId.FromRaw
(digest.Digest())));
}
finally
{
br.Close();
}
}
private void SaveStatInformation()
{
if (needSnapshot)
{
commitSnapshot = FileSnapshot.Save(lck);
}
}
private ObjectDirectory.PackList ScanPacksImpl(ObjectDirectory.PackList old)
{
IDictionary <string, PackFile> forReuse = ReuseMap(old);
FileSnapshot snapshot = FileSnapshot.Save(packDirectory);
ICollection <string> names = ListPackDirectory();
IList <PackFile> list = new AList <PackFile>(names.Count >> 2);
bool foundNew = false;
foreach (string indexName in names)
{
// Must match "pack-[0-9a-f]{40}.idx" to be an index.
//
if (indexName.Length != 49 || !indexName.EndsWith(".idx"))
{
continue;
}
string @base = Sharpen.Runtime.Substring(indexName, 0, indexName.Length - 4);
string packName = @base + ".pack";
if (!names.Contains(packName))
{
// Sometimes C Git's HTTP fetch transport leaves a
// .idx file behind and does not download the .pack.
// We have to skip over such useless indexes.
//
continue;
}
PackFile oldPack = Sharpen.Collections.Remove(forReuse, packName);
if (oldPack != null)
{
list.AddItem(oldPack);
continue;
}
FilePath packFile = new FilePath(packDirectory, packName);
FilePath idxFile = new FilePath(packDirectory, indexName);
list.AddItem(new PackFile(idxFile, packFile));
foundNew = true;
}
// If we did not discover any new files, the modification time was not
// changed, and we did not remove any files, then the set of files is
// the same as the set we were given. Instead of building a new object
// return the same collection.
//
if (!foundNew && forReuse.IsEmpty() && snapshot.Equals(old.snapshot))
{
old.snapshot.SetClean(snapshot);
return(old);
}
foreach (PackFile p in forReuse.Values)
{
p.Close();
}
if (list.IsEmpty())
{
return(new ObjectDirectory.PackList(snapshot, NO_PACKS.packs));
}
PackFile[] r = Sharpen.Collections.ToArray(list, new PackFile[list.Count]);
Arrays.Sort(r, PackFile.SORT);
return(new ObjectDirectory.PackList(snapshot, r));
}
/// <exception cref="System.IO.IOException"></exception>
private ObjectDirectory.CachedPackList ScanCachedPacks(ObjectDirectory.CachedPackList
old)
{
FileSnapshot s = FileSnapshot.Save(cachedPacksFile);
byte[] buf;
try
{
buf = IOUtil.ReadFully(cachedPacksFile);
}
catch (FileNotFoundException)
{
buf = new byte[0];
}
if (old != null && old.snapshot.Equals(s) && Arrays.Equals(old.raw, buf))
{
old.snapshot.SetClean(s);
return(old);
}
AList <LocalCachedPack> list = new AList <LocalCachedPack>(4);
ICollection <ObjectId> tips = new HashSet <ObjectId>();
int ptr = 0;
while (ptr < buf.Length)
{
if (buf[ptr] == '#' || buf[ptr] == '\n')
{
ptr = RawParseUtils.NextLF(buf, ptr);
continue;
}
if (buf[ptr] == '+')
{
tips.AddItem(ObjectId.FromString(buf, ptr + 2));
ptr = RawParseUtils.NextLF(buf, ptr + 2);
continue;
}
IList <string> names = new AList <string>(4);
while (ptr < buf.Length && buf[ptr] == 'P')
{
int end = RawParseUtils.NextLF(buf, ptr);
if (buf[end - 1] == '\n')
{
end--;
}
names.AddItem(RawParseUtils.Decode(buf, ptr + 2, end));
ptr = RawParseUtils.NextLF(buf, end);
}
if (!tips.IsEmpty() && !names.IsEmpty())
{
list.AddItem(new LocalCachedPack(this, tips, names));
tips = new HashSet <ObjectId>();
}
}
list.TrimToSize();
return(new ObjectDirectory.CachedPackList(s, Sharpen.Collections.UnmodifiableList
(list), buf));
}
/// <summary>Load the configuration as a Git text style configuration file.</summary>
/// <remarks>
/// Load the configuration as a Git text style configuration file.
/// <p>
/// If the file does not exist, this configuration is cleared, and thus
/// behaves the same as though the file exists, but is empty.
/// </remarks>
/// <exception cref="System.IO.IOException">the file could not be read (but does exist).
/// </exception>
/// <exception cref="NGit.Errors.ConfigInvalidException">the file is not a properly formatted configuration file.
/// </exception>
public override void Load()
{
FileSnapshot oldSnapshot = snapshot;
FileSnapshot newSnapshot = FileSnapshot.Save(GetFile());
try
{
byte[] @in = IOUtil.ReadFully(GetFile());
ObjectId newHash = Hash(@in);
if (hash.Equals(newHash))
{
if (oldSnapshot.Equals(newSnapshot))
{
oldSnapshot.SetClean(newSnapshot);
}
else
{
snapshot = newSnapshot;
}
}
else
{
string decoded;
if (@in.Length >= 3 && @in[0] == unchecked ((byte)unchecked ((int)(0xEF))) && @in[1
] == unchecked ((byte)unchecked ((int)(0xBB))) && @in[2] == unchecked ((byte)unchecked (
(int)(0xBF))))
{
decoded = RawParseUtils.Decode(RawParseUtils.UTF8_CHARSET, @in, 3, @in.Length);
utf8Bom = true;
}
else
{
decoded = RawParseUtils.Decode(@in);
}
FromText(decoded);
snapshot = newSnapshot;
hash = newHash;
}
}
catch (FileNotFoundException)
{
Clear();
snapshot = newSnapshot;
}
catch (IOException e)
{
IOException e2 = new IOException(MessageFormat.Format(JGitText.Get().cannotReadFile
, GetFile()));
Sharpen.Extensions.InitCause(e2, e);
throw e2;
}
catch (ConfigInvalidException e)
{
throw new ConfigInvalidException(MessageFormat.Format(JGitText.Get().cannotReadFile
, GetFile()), e);
}
}
public virtual void TestNewFileNoWait()
{
FilePath f1 = CreateFile("newfile");
WaitNextSec(f1);
FileSnapshot save = FileSnapshot.Save(f1);
Sharpen.Thread.Sleep(1500);
NUnit.Framework.Assert.IsTrue(save.IsModified(f1));
}
public virtual void TestOldFile()
{
FilePath f1 = CreateFile("oldfile");
WaitNextSec(f1);
FileSnapshot save = FileSnapshot.Save(f1);
Sharpen.Thread.Sleep(3500);
NUnit.Framework.Assert.IsFalse(save.IsModified(f1));
}
public virtual void TestActuallyIsModifiedTrivial()
{
FilePath f1 = CreateFile("simple");
WaitNextSec(f1);
FileSnapshot save = FileSnapshot.Save(f1);
Append(f1, unchecked ((byte)'x'));
WaitNextSec(f1);
NUnit.Framework.Assert.IsTrue(save.IsModified(f1));
}
/// <summary>Wait until the lock file information differs from the old file.</summary>
/// <remarks>
/// Wait until the lock file information differs from the old file.
/// <p>
/// This method tests the last modification date. If both are the same, this
/// method sleeps until it can force the new lock file's modification date to
/// be later than the target file.
/// </remarks>
/// <exception cref="System.Exception">
/// the thread was interrupted before the last modified date of
/// the lock file was different from the last modified date of
/// the target file.
/// </exception>
public virtual void WaitForStatChange()
{
FileSnapshot o = FileSnapshot.Save(@ref);
FileSnapshot n = FileSnapshot.Save(lck);
while (o.Equals(n))
{
Sharpen.Thread.Sleep(25);
lck.SetLastModified(Runtime.CurrentTimeMillis());
n = FileSnapshot.Save(lck);
}
}
/// <summary>Load the configuration as a Git text style configuration file.</summary>
/// <remarks>
/// Load the configuration as a Git text style configuration file.
/// <p>
/// If the file does not exist, this configuration is cleared, and thus
/// behaves the same as though the file exists, but is empty.
/// </remarks>
/// <exception cref="System.IO.IOException">the file could not be read (but does exist).
/// </exception>
/// <exception cref="NGit.Errors.ConfigInvalidException">the file is not a properly formatted configuration file.
/// </exception>
public override void Load()
{
FileSnapshot oldSnapshot = snapshot;
FileSnapshot newSnapshot = FileSnapshot.Save(GetFile());
try
{
byte[] @in = IOUtil.ReadFully(GetFile());
ObjectId newHash = Hash(@in);
if (hash.Equals(newHash))
{
if (oldSnapshot.Equals(newSnapshot))
{
oldSnapshot.SetClean(newSnapshot);
}
else
{
snapshot = newSnapshot;
}
}
else
{
FromText(RawParseUtils.Decode(@in));
snapshot = newSnapshot;
hash = newHash;
}
}
catch (FileNotFoundException)
{
Clear();
snapshot = newSnapshot;
}
catch (IOException e)
{
IOException e2 = new IOException(MessageFormat.Format(JGitText.Get().cannotReadFile
, GetFile()));
Sharpen.Extensions.InitCause(e2, e);
throw e2;
}
catch (ConfigInvalidException e)
{
throw new ConfigInvalidException(MessageFormat.Format(JGitText.Get().cannotReadFile
, GetFile()), e);
}
}
/// <summary>Detect index changes.</summary>
/// <remarks>Detect index changes.</remarks>
private void DetectIndexChanges()
{
if (IsBare)
{
return;
}
FilePath indexFile = GetIndexFile();
if (snapshot == null)
{
snapshot = FileSnapshot.Save(indexFile);
}
else
{
if (snapshot.IsModified(indexFile))
{
NotifyIndexChanged();
}
}
}
public override void NotifyIndexChanged()
{
snapshot = FileSnapshot.Save(GetIndexFile());
FireEvent(new IndexChangedEvent());
}
/// <exception cref="System.IO.IOException"></exception>
private RefDirectory.LooseRef ScanRef(RefDirectory.LooseRef @ref, string name)
{
FilePath path = FileFor(name);
FileSnapshot currentSnapshot = null;
if (@ref != null)
{
currentSnapshot = @ref.GetSnapShot();
if (!currentSnapshot.IsModified(path))
{
return(@ref);
}
name = @ref.GetName();
}
int limit = 4096;
byte[] buf;
FileSnapshot otherSnapshot = FileSnapshot.Save(path);
try
{
buf = IOUtil.ReadSome(path, limit);
}
catch (FileNotFoundException)
{
return(null);
}
// doesn't exist; not a reference.
int n = buf.Length;
if (n == 0)
{
return(null);
}
// empty file; not a reference.
if (IsSymRef(buf, n))
{
if (n == limit)
{
return(null);
}
// possibly truncated ref
// trim trailing whitespace
while (0 < n && char.IsWhiteSpace((char)buf[n - 1]))
{
n--;
}
if (n < 6)
{
string content = RawParseUtils.Decode(buf, 0, n);
throw new IOException(MessageFormat.Format(JGitText.Get().notARef, name, content)
);
}
string target = RawParseUtils.Decode(buf, 5, n);
if (@ref != null && @ref.IsSymbolic() && @ref.GetTarget().GetName().Equals(target
))
{
currentSnapshot.SetClean(otherSnapshot);
return(@ref);
}
return(NewSymbolicRef(otherSnapshot, name, target));
}
if (n < Constants.OBJECT_ID_STRING_LENGTH)
{
return(null);
}
// impossibly short object identifier; not a reference.
ObjectId id;
try
{
id = ObjectId.FromString(buf, 0);
if (@ref != null && [email protected]() && @ref.GetTarget().GetObjectId().Equals(id
))
{
currentSnapshot.SetClean(otherSnapshot);
return(@ref);
}
}
catch (ArgumentException)
{
while (0 < n && char.IsWhiteSpace((char)buf[n - 1]))
{
n--;
}
string content = RawParseUtils.Decode(buf, 0, n);
throw new IOException(MessageFormat.Format(JGitText.Get().notARef, name, content)
);
}
return(new RefDirectory.LooseUnpeeled(otherSnapshot, name, id));
}
