static PoiList ReadFromOsm(string srcFile, bool excludeNoName, bool excludeNoElevation)
{
XmlDocument OSMDoc = new XmlDocument();
OSMDoc.Load(srcFile);
XmlNodeList nl = OSMDoc.SelectNodes("/osm/node");
int totalRead = 0;
int totalWritten = 0;
int errorNoElevation = 0;
int errorNoName = 0;
var poiList = new PoiList();
foreach (XmlElement xelement in nl)
{
totalRead++;
var lat = xelement.Attributes.GetNamedItem("lat").Value;
var lon = xelement.Attributes.GetNamedItem("lon").Value;
string name = "";
string ele = "";
string wikipedia = "";
string wikidata = "";
XmlNodeList tags = xelement.SelectNodes("tag");
foreach (XmlElement nameElement in tags)
{
if (nameElement.Attributes.GetNamedItem("k").Value == "name")
{
name = nameElement.Attributes.GetNamedItem("v").Value;
}
if (nameElement.Attributes.GetNamedItem("k").Value == "ele")
{
ele = nameElement.Attributes.GetNamedItem("v").Value;
}
if (nameElement.Attributes.GetNamedItem("k").Value == "wikidata")
{
wikidata = nameElement.Attributes.GetNamedItem("v").Value;
}
if (nameElement.Attributes.GetNamedItem("k").Value == "wikipedia")
{
wikipedia = nameElement.Attributes.GetNamedItem("v").Value;
}
}
if (String.IsNullOrEmpty(name))
{
errorNoName++;
if (excludeNoName)
{
continue;
}
}
if (String.IsNullOrEmpty(ele) && excludeNoElevation)
{
errorNoElevation++;
if (excludeNoElevation)
{
continue;
}
}
if (ele.EndsWith("m"))
{
ele = ele.Remove(ele.Length - 1, 1);
}
try
{
poiList.Add(
new Poi()
{
Latitude = double.Parse(lat, CultureInfo.InvariantCulture),
Longitude = double.Parse(lon, CultureInfo.InvariantCulture),
Altitude = string.IsNullOrEmpty(ele) ? 0 : double.Parse(ele, CultureInfo.InvariantCulture),
Wikidata = wikidata,
Wikipedia = wikipedia,
Name = name
});
}
catch (Exception ex)
{
Console.WriteLine("Error:" + ex.Message);
Console.WriteLine($" Name: {name}");
Console.WriteLine($" Latitude: {lat}");
Console.WriteLine($" Longitude: {lon}");
Console.WriteLine($" Altitude: {ele}");
}
}
WriteStatistics(totalRead, errorNoName, errorNoElevation);
return(poiList);
}
static public PoiList Parse(string xml, PoiCategory category, PoiCountry country, Guid source, Action <int> OnStart = null, Action <int> OnProgress = null)
{
var lastNode = "";
try
{
var listOfPoi = new PoiList();
XmlDocument gpxDoc = new XmlDocument();
gpxDoc.LoadXml(xml);
XmlNamespaceManager nsmgr = new XmlNamespaceManager(gpxDoc.NameTable);
nsmgr.AddNamespace("x", "http://www.topografix.com/GPX/1/1");
nsmgr.AddNamespace("ogr", "http://osgeo.org/gdal");
XmlNodeList nl = gpxDoc.SelectNodes("/x:gpx/x:wpt ", nsmgr);
OnStart?.Invoke(nl == null ? 0 : nl.Count);
int i = 0;
foreach (XmlElement xelement in nl)
{
OnProgress?.Invoke(i++);
var lat = xelement.Attributes.GetNamedItem("lat").Value;
var lon = xelement.Attributes.GetNamedItem("lon").Value;
var nameElement = xelement["name"];
var name = nameElement == null ? "Unnamed" : nameElement.InnerText;
var eleElement = xelement["ele"];
var ele = eleElement == null ? "0" : eleElement.InnerText;
var wikidataElement = xelement["wikidata"];
string wikidata = wikidataElement == null ? "" : wikidataElement.InnerText;
var wikipediaElement = xelement["wikipedia"];
string wikipedia = wikipediaElement == null ? "" : wikipediaElement.InnerText;
Poi poi = new Poi
{
Name = name,
Longitude = double.Parse(lon, CultureInfo.InvariantCulture),
Latitude = double.Parse(lat, CultureInfo.InvariantCulture),
Altitude = String.IsNullOrEmpty(ele) ? 0 : double.Parse(ele, CultureInfo.InvariantCulture),
Category = category,
Country = country,
Source = source
};
if (!String.IsNullOrEmpty(wikipedia))
{
poi.Wikipedia = wikipedia;
}
if (!String.IsNullOrEmpty(wikidata))
{
poi.Wikidata = wikidata;
}
listOfPoi.Add(poi);
lastNode = name;
}
return(listOfPoi);
}
catch (Exception ex)
{
throw new Exception($"Error when parsing GPX file (last node:{lastNode})", ex);
}
}
