public /*internal*/ RAMOutputStream(RAMFile f)
{
file = f;
// make sure that we switch to the
// first needed buffer lazily
currentBufferIndex = - 1;
currentBuffer = null;
}
public /*internal*/ RAMOutputStream(RAMFile f)
{
file = f;
// make sure that we switch to the
// first needed buffer lazily
currentBufferIndex = -1;
currentBuffer = null;
}
public /*internal*/ RAMInputStream(RAMFile f)
{
file = f;
length = file.length;
if (length / BUFFER_SIZE >= System.Int32.MaxValue)
{
throw new System.IO.IOException("Too large RAMFile! " + length);
}
// make sure that we switch to the
// first needed buffer lazily
currentBufferIndex = - 1;
currentBuffer = null;
}
public /*internal*/ RAMInputStream(RAMFile f)
{
file = f;
length = file.length;
if (length / BUFFER_SIZE >= System.Int32.MaxValue)
{
throw new System.IO.IOException("Too large RAMFile! " + length);
}
// make sure that we switch to the
// first needed buffer lazily
currentBufferIndex = -1;
currentBuffer = null;
}
/// <summary>Creates a new, empty file in the directory with the given name. Returns a stream writing this file. </summary>
public override IndexOutput CreateOutput(System.String name)
{
EnsureOpen();
RAMFile file = new RAMFile(this);
lock (this)
{
RAMFile existing = (RAMFile)fileMap[name];
if (existing != null)
{
sizeInBytes -= existing.sizeInBytes;
existing.directory = null;
}
fileMap[name] = file;
}
return(new RAMOutputStream(file));
}
/// <summary>Removes an existing file in the directory.</summary>
/// <throws> IOException if the file does not exist </throws>
public override void DeleteFile(System.String name)
{
lock (this)
{
EnsureOpen();
RAMFile file = (RAMFile)fileMap[name];
if (file != null)
{
fileMap.Remove(name);
file.directory = null;
sizeInBytes -= file.sizeInBytes;
}
else
{
throw new System.IO.FileNotFoundException(name);
}
}
}
public override void RenameFile(System.String from, System.String to)
{
lock (this)
{
EnsureOpen();
RAMFile fromFile = (RAMFile)fileMap[from];
if (fromFile == null)
{
throw new System.IO.FileNotFoundException(from);
}
RAMFile toFile = (RAMFile)fileMap[to];
if (toFile != null)
{
sizeInBytes -= toFile.sizeInBytes; // updates to RAMFile.sizeInBytes synchronized on directory
toFile.directory = null;
}
fileMap.Remove(from);
fileMap[to] = fromFile;
}
}
/// <summary>Creates a new, empty file in the directory with the given name. Returns a stream writing this file. </summary>
public override IndexOutput CreateOutput(System.String name)
{
EnsureOpen();
RAMFile file = new RAMFile(this);
lock (this)
{
RAMFile existing = (RAMFile) fileMap[name];
if (existing != null)
{
sizeInBytes -= existing.sizeInBytes;
existing.directory = null;
}
fileMap[name] = file;
}
return new RAMOutputStream(file);
}