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package org.openslx.filetransfer;
public class FileRange
{
/**
* Offset of first byte of range in file, inclusive
*/
public final long startOffset;
/**
* Offset of last byte of range in file, exclusive
*/
public final long endOffset;
/**
* Create a FileRange instance
*
* @param startOffset Offset of first byte of range in file, inclusive
* @param endOffset Offset of last byte of range in file, exclusive
*/
public FileRange( long startOffset, long endOffset )
{
this.startOffset = startOffset;
this.endOffset = endOffset;
}
/**
* Get length of range
*
* @return length of range, in bytes
*/
public int getLength()
{
return (int) ( endOffset - startOffset );
}
/**
* Check if the given range lies within this chunk's range.
*
* @param startOffset Start offset to compare to
* @param endOffset End offset to compare to
* @return true iff the given offsets are a subset or equal to the offsets represented by this
* class
*/
public boolean contains( long startOffset, long endOffset )
{
return this.startOffset <= startOffset && this.endOffset >= endOffset;
}
@Override
public boolean equals( Object other )
{
if ( other == this )
return true;
if ( other == null || ! ( other instanceof FileRange ) )
return false;
FileRange o = (FileRange)other;
return o.startOffset == this.startOffset && o.endOffset == this.endOffset;
}
@Override
public int hashCode()
{
return (int)startOffset ^ Integer.rotateLeft( (int)endOffset, 16 ) ^ (int)(startOffset >> 32);
}
}
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