/// <summary>
/// Moves the PBF reader to the next primitive or returns one of the cached ones.
/// </summary>
/// <returns></returns>
private KeyValuePair <PrimitiveBlock, object> MoveToNextPrimitive(bool ignoreNodes, bool ignoreWays, bool ignoreRelations)
{
var next = this.DeQueuePrimitive();
if (next.Value == null)
{ // decode another block.
// move to first way/relation position if they are known and nodes and or ways are to be skipped.
if (_firstWayPosition != -1 && ignoreNodes && !ignoreWays)
{ // if nodes have to be ignored, there was already a first pass and ways are not to be ignored jump to the first way.
if (_stream.Position <= _firstWayPosition)
{ // only just to the first way if that hasn't happened yet.
_stream.Seek(_firstWayPosition, SeekOrigin.Begin);
}
}
if (_firstRelationPosition != -1 && ignoreNodes && ignoreWays && !ignoreRelations)
{ // if nodes and ways have to be ignored, there was already a first pass and ways are not be ignored jump to the first relation.
if (_stream.Position < _firstRelationPosition)
{ // only just to the first relation if that hasn't happened yet.
_stream.Seek(_firstRelationPosition, SeekOrigin.Begin);
}
}
// just to the next block.
var beforeBlockPosition = _stream.Position;
var block = _reader.MoveNext();
bool hasNodes = false, hasWays = false, hasRelations = false;
while (block != null && !Encoder.Decode(block, this, ignoreNodes, ignoreWays, ignoreRelations,
out hasNodes, out hasWays, out hasRelations))
{
if (hasWays && _firstWayPosition == -1)
{
_firstWayPosition = beforeBlockPosition;
}
if (hasRelations && _firstRelationPosition == -1)
{
_firstRelationPosition = beforeBlockPosition;
}
beforeBlockPosition = _stream.Position;
block = _reader.MoveNext();
}
if (hasWays && _firstWayPosition == -1)
{
_firstWayPosition = beforeBlockPosition;
}
if (hasRelations && _firstRelationPosition == -1)
{
_firstRelationPosition = beforeBlockPosition;
}
next = this.DeQueuePrimitive();
}
return(next);
}
/// <summary>
/// Moves the PBF reader to the next primitive or returns one of the cached ones.
/// </summary>
/// <returns></returns>
private KeyValuePair <PrimitiveBlock, object> MoveToNextPrimitive(bool ignoreNodes, bool ignoreWays, bool ignoreRelations)
{
var next = this.DeQueuePrimitive();
if (next.Value == null)
{
var block = _reader.MoveNext();
while (block != null && !PBF.Encoder.Decode(block, this, ignoreNodes, ignoreWays, ignoreRelations))
{
block = _reader.MoveNext();
}
next = this.DeQueuePrimitive();
}
return(next);
}
/// <summary>
/// Moves the PBF reader to the next primitive or returns one of the cached ones.
/// </summary>
/// <returns></returns>
private KeyValuePair <PrimitiveBlock, object> MoveToNextPrimitive(bool ignoreNodes, bool ignoreWays, bool ignoreRelations)
{
KeyValuePair <PrimitiveBlock, object> next = this.DeQueuePrimitive();
if (next.Value == null)
{
PrimitiveBlock block = _reader.MoveNext();
if (block != null)
{
while (!_decompressor.ProcessPrimitiveBlock(block, ignoreNodes, ignoreWays, ignoreRelations))
{
block = _reader.MoveNext();
}
next = this.DeQueuePrimitive();
}
}
return(next);
}
/// <summary>
/// Moves the PBF reader to the next primitive or returns one of the cached ones.
/// </summary>
/// <returns></returns>
private KeyValuePair <PrimitiveBlock, object> MoveToNextPrimitive()
{
KeyValuePair <PrimitiveBlock, object> next = this.DeQueuePrimitive();
if (next.Value == null)
{
PrimitiveBlock block = _reader.MoveNext();
if (block != null)
{
_decompressor.ProcessPrimitiveBlock(block);
next = this.DeQueuePrimitive();
}
}
return(next);
}
