public void GetSimpleBufferRangeTest()
{
this.Cache.RangeCollection.AddRange(0, 500);
LongRange range_actual = this.Cache.GetNextBufferRange(0);
LongRange range_expected = new LongRange(500, this.RemoteFile.Size);
Assert.AreEqual(0, range_actual.CompareTo(range_expected));
}
public void GetBufferRangeTest()
{
this.Cache.RangeCollection.AddRange(0, 500);
this.Cache.RangeCollection.AddRange(750, 1500);
this.Cache.RangeCollection.AddRange(14323, 15630);
LongRange range_actual;
LongRange range_expected;
range_actual = this.Cache.GetNextBufferRange(500);
range_expected = new LongRange(500, 750);
Assert.AreEqual(0, range_actual.CompareTo(range_expected));
range_actual = this.Cache.GetNextBufferRange(560);
range_expected = new LongRange(560, 750);
Assert.AreEqual(0, range_actual.CompareTo(range_expected));
range_actual = this.Cache.GetNextBufferRange(1120);
range_expected = new LongRange(1500, 14323);
Assert.AreEqual(0, range_actual.CompareTo(range_expected));
range_actual = this.Cache.GetNextBufferRange(14859);
range_expected = new LongRange(15630, this.RemoteFile.Size);
Assert.AreEqual(0, range_actual.CompareTo(range_expected));
range_actual = this.Cache.GetNextBufferRange(20000);
range_expected = new LongRange(20000, this.RemoteFile.Size);
Assert.AreEqual(0, range_actual.CompareTo(range_expected));
}
public LongRange GetNextBufferRange(long offset)
{
if (offset >= this.PutioFile.Size)
return null;
lock (this.RangeCollection)
{
LongRange BufferThis = new LongRange(0, this.PutioFile.Size);
int index = this.RangeCollection.BinaryIndexSearch(offset);
if (index < 0)
{
BufferThis.Start = offset;
index = this.RangeCollection.Bisect(offset);
if (index < this.RangeCollection.RangeSet.Count)
BufferThis.End = this.RangeCollection.RangeSet.ElementAt(index).Start;
else
BufferThis.End = this.PutioFile.Size;
}
else
{
return this.GetNextBufferRange(this.RangeCollection.RangeSet.ElementAt(index).End);
}
return BufferThis;
}
}
/// <summary>
/// Return how much is buffered after offset.
/// </summary>
/// <param name="offset"></param>
/// <returns></returns>
public long CacheRange(long offset)
{
LongRange r = this.RangeCollection.BinarySearch(offset);
if (r == null)
{
return(0);
}
else
{
return(r.End - offset);
}
}
/// <summary>
/// Check if this object intersects with the given range.
/// Start positions are inclusive and End positions are
/// exclusive.
/// </summary>
/// <param name="range"></param>
/// <returns></returns>
public Boolean Intersects(LongRange range)
{
if (this.Start == range.Start || this.End == range.End)
{
return(true);
}
if (this.Start < range.Start)
{
return(this.End > range.Start);
}
else
{
return(this.Start < range.End);
}
}
/// <summary>
/// Check if this objects comes RIGHT AFTER or RIGHT
/// BEFORE the given range. That is. this.Start is equal
/// to range.End or vice versa.
/// </summary>
/// <param name="range"></param>
/// <returns></returns>
public Boolean IsConsequent(LongRange range)
{
return(this.End == range.Start || this.Start == range.End);
}
/// <summary>
/// Try to merge two Ranges. Do nothing if they are
/// not consecutive or intersecting ranges. Return true
/// if merged, false otherwise.
/// </summary>
/// <param name="range"></param>
public Boolean TryMerge(LongRange range)
{
if (this.Intersects(range) || this.IsConsequent(range))
{
this.Merge(range);
return true;
}
return false;
}
/// <summary>
/// Merge this LongRange with a one that intersects it.
/// </summary>
/// <param name="range"></param>
public void Merge(LongRange range)
{
if (!this.Intersects(range) && !this.IsConsequent(range))
throw new Exception("Can't merge two LongRange objects that don't intersect");
this.Start = Math.Min(this.Start, range.Start);
this.End = Math.Max(this.End, range.End);
}
/// <summary>
/// Check if this objects comes RIGHT AFTER or RIGHT
/// BEFORE the given range. That is. this.Start is equal
/// to range.End or vice versa.
/// </summary>
/// <param name="range"></param>
/// <returns></returns>
public Boolean IsConsequent(LongRange range)
{
return this.End == range.Start || this.Start == range.End;
}
/// <summary>
/// Check if this object intersects with the given range.
/// Start positions are inclusive and End positions are
/// exclusive.
/// </summary>
/// <param name="range"></param>
/// <returns></returns>
public Boolean Intersects(LongRange range)
{
if (this.Start == range.Start || this.End == range.End)
return true;
if (this.Start < range.Start)
return this.End > range.Start;
else
return this.Start < range.End;
}
public Boolean IsClosetoHandle(LongRange range, long position)
{
if (this.Handle.BufferPosition < range.Start)
return false;
return this.Handle.BufferPosition <= (position + Constants.CHUNK_TOLERANCE);
}
public void RangeConstructorTest()
{
LongRange range = new LongRange(697080622, 697080622 + 1);
range.End = 697080622;
}
