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Fixed "highway" tag to key instead of value

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Memory usage decrease
This commit is contained in:
C9Glax 2023-02-05 20:44:23 +01:00
parent b6ca87ea72
commit 87944997db
1 changed files with 29 additions and 30 deletions
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49
OSMSplitter/XMLImporter.cs
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@ -50,26 +50,27 @@ namespace OSMImporter
Dictionary<ulong, Node?> retSet = new Dictionary<ulong, Node?>(); Dictionary<ulong, Node?> retSet = new Dictionary<ulong, Node?>();
while (xmlReader.ReadToFollowing("way")) while (xmlReader.ReadToFollowing("way"))
{ {
byte[] byteArray = Encoding.ASCII.GetBytes(xmlReader.ReadOuterXml()); XmlReader wayReader = xmlReader.ReadSubtree();
MemoryStream wayStream = new MemoryStream(byteArray);
XmlReader wayReader = XmlReader.Create(wayStream);
bool addNodes = false; bool addNodes = false;
while (wayReader.ReadToFollowing("tag") && !addNodes) HashSet<string> nodeIds = new();
while (wayReader.Read())
{ {
if (wayReader.GetAttribute("v")!.Equals("highway")) if (xmlReader.IsStartElement() && xmlReader.Name.Equals("nd"))
{
nodeIds.Add(wayReader.GetAttribute("ref")!);
}
else if (xmlReader.IsStartElement() && !addNodes && xmlReader.Name.Equals("tag") && xmlReader.GetAttribute("k")!.Equals("highway"))
{ {
addNodes = true; addNodes = true;
break;
} }
} }
wayReader.Close();
if (addNodes) if (addNodes)
{ {
wayStream.Position = 0; foreach (string nodeId in nodeIds)
wayReader = XmlReader.Create(wayStream);
while (wayReader.ReadToFollowing("nd"))
{ {
retSet.TryAdd(Convert.ToUInt64(wayReader.GetAttribute("ref")!), null); retSet.TryAdd(Convert.ToUInt64(nodeId), null);
} }
} }
} }
@ -99,31 +100,29 @@ namespace OSMImporter
{ {
while (xmlReader.ReadToFollowing("way")) while (xmlReader.ReadToFollowing("way"))
{ {
byte[] byteArray = Encoding.ASCII.GetBytes(xmlReader.ReadOuterXml()); XmlReader wayReader = xmlReader.ReadSubtree();
MemoryStream wayStream = new MemoryStream(byteArray); HashSet<ulong> nodesInWay = new ();
XmlReader wayReader = XmlReader.Create(wayStream); Dictionary<string, string> tags = new ();
Dictionary<string, string> tags = new Dictionary<string, string>();
bool addNodes = false; bool addNodes = false;
while (wayReader.ReadToFollowing("tag")) while (wayReader.Read())
{ {
if (wayReader.GetAttribute("v")!.Equals("highway")) if (wayReader.IsStartElement() && wayReader.Name.Equals("nd"))
{
nodesInWay.Add(Convert.ToUInt64(wayReader.GetAttribute("ref")));
}
else if (wayReader.IsStartElement() && wayReader.Name.Equals("tag"))
{
if (wayReader.GetAttribute("k")!.Equals("highway"))
{ {
addNodes = true; addNodes = true;
} }
tags.Add(wayReader.GetAttribute("k")!, value: wayReader.GetAttribute("v")!); tags.Add(wayReader.GetAttribute("k")!, value: wayReader.GetAttribute("v")!);
} }
}
wayReader.Close();
if (addNodes) if (addNodes)
{ {
HashSet<ulong> nodesInWay = new HashSet<ulong>();
wayStream.Position = 0;
wayReader = XmlReader.Create(wayStream);
while (wayReader.ReadToFollowing("nd"))
{
nodesInWay.Add(Convert.ToUInt64(wayReader.GetAttribute("ref")));
}
ConnectNodesOfWay(nodes, nodesInWay.ToArray(), tags); ConnectNodesOfWay(nodes, nodesInWay.ToArray(), tags);
} }
} }