private ByteBufferIndexInput BuildSlice(long offset, long length)
{
if (buffers == null)
{
throw new ObjectDisposedException(this.GetType().GetTypeInfo().FullName, "Already closed: " + this);
}
if (offset < 0 || length < 0 || offset + length > this.length)
{
throw new ArgumentException("slice() " + sliceDescription + " out of bounds: offset=" + offset + ",length=" + length + ",fileLength=" + this.length + ": " + this);
}
// include our own offset into the final offset:
offset += this.offset;
ByteBufferIndexInput clone = (ByteBufferIndexInput)base.Clone();
clone.isClone = true;
// we keep clone.clones, so it shares the same map with original and we have no additional cost on clones
Debug.Assert(clone.clones == this.clones);
clone.buffers = BuildSlice(buffers, offset, length);
clone.offset = (int)(offset & chunkSizeMask);
clone.length = length;
// register the new clone in our clone list to clean it up on closing:
if (clones != null)
{
this.clones.Put(clone, new BoolRefWrapper(true));
}
return(clone);
}
public override sealed object Clone()
{
ByteBufferIndexInput clone = BuildSlice(0L, this.length);
try
{
clone.Seek(GetFilePointer());
}
catch (IOException ioe)
{
throw new Exception("Should never happen: " + this, ioe);
}
return(clone);
}
public override sealed object Clone()
{
ByteBufferIndexInput clone = BuildSlice(0L, this.length);
try
{
clone.Seek(Position); // LUCENENET specific: Renamed from getFilePointer() to match FileStream
}
catch (Exception ioe) when(ioe.IsIOException())
{
throw RuntimeException.Create("Should never happen: " + this, ioe);
}
return(clone);
}
private ByteBufferIndexInput BuildSlice(long offset, long length)
{
// LUCENENET: Refactored to avoid calls on invalid conditions instead of
// catching and re-throwing exceptions in the normal workflow.
EnsureOpen();
// LUCENENET: Added .NET-sytle guard clauses that throw ArgumementOutOfRangeException
if (offset < 0)
{
throw new ArgumentOutOfRangeException(nameof(offset), "offset may not be negative.");
}
if (length < 0)
{
throw new ArgumentOutOfRangeException(nameof(length), "length may not be negative.");
}
if (offset + length > this.length)
{
throw new ArgumentException("slice() " + sliceDescription + " out of bounds: offset=" + offset + ",length=" + length + ",fileLength=" + this.length + ": " + this);
}
// include our own offset into the final offset:
offset += this.offset;
ByteBufferIndexInput clone = (ByteBufferIndexInput)base.Clone();
clone.isClone = true;
// we keep clone.clones, so it shares the same map with original and we have no additional cost on clones
if (Debugging.AssertsEnabled)
{
Debugging.Assert(clone.clones == this.clones);
}
clone.buffers = BuildSlice(buffers, offset, length);
clone.offset = (int)(offset & chunkSizeMask);
clone.length = length;
// register the new clone in our clone list to clean it up on closing:
if (clones != null)
{
this.clones.Add(clone, true);
}
return(clone);
}
/// <summary>
/// Creates a slice of this index input, with the given description, offset, and length. The slice is seeked to the beginning.
/// </summary>
public ByteBufferIndexInput Slice(string sliceDescription, long offset, long length)
{
if (isClone) // well we could, but this is stupid
{
throw new InvalidOperationException("cannot slice() " + sliceDescription + " from a cloned IndexInput: " + this);
}
ByteBufferIndexInput clone = BuildSlice(offset, length);
clone.sliceDescription = sliceDescription;
try
{
clone.Seek(0L);
}
catch (IOException ioe)
{
throw new Exception("Should never happen: " + this, ioe);
}
return(clone);
}
/// <summary>
/// Creates a slice of this index input, with the given description, offset, and length. The slice is seeked to the beginning.
/// </summary>
public ByteBufferIndexInput Slice(string sliceDescription, long offset, long length)
{
// LUCENENET: Refactored to avoid calls on invalid conditions instead of
// catching and re-throwing exceptions in the normal workflow.
EnsureOpen();
if (isClone) // well we could, but this is stupid
{
throw IllegalStateException.Create("cannot Slice() " + sliceDescription + " from a cloned IndexInput: " + this);
}
ByteBufferIndexInput clone = BuildSlice(offset, length);
clone.sliceDescription = sliceDescription;
try
{
clone.Seek(0L);
}
catch (Exception ioe) when(ioe.IsIOException())
{
throw RuntimeException.Create("Should never happen: " + this, ioe);
}
return(clone);
}