/// <summary>
/// Splits the given tags into a normalized version, profile tags, and the rest in metatags.
/// </summary>
public static bool Normalize(IAttributeCollection tags, IAttributeCollection profileTags, VehicleCache vehicleCache)
{
var normalizedTags = new HashSet <string>(new string[] { "highway", "maxspeed", "oneway", "oneway:bicycle",
"cycleway", "junction", "access" });
foreach (var vehicle in vehicleCache.Vehicles)
{
foreach (var vehicleType in vehicle.VehicleTypes)
{
normalizedTags.Add(vehicleType);
}
}
string highway;
if (!tags.TryGetValue("highway", out highway))
{ // there is no highway tag, don't continue the search.
return(false);
}
// add the highway tag.
profileTags.AddOrReplace("highway", highway);
// normalize maxspeed tags.
tags.NormalizeMaxspeed(profileTags);
// normalize oneway tags.
tags.NormalizeOneway(profileTags);
tags.NormalizeOnewayBicycle(profileTags);
// normalize cyclceway.
tags.NormalizeCycleway(profileTags);
// normalize junction=roundabout tag.
tags.NormalizeJunction(profileTags);
// normalize access tags.
foreach (var vehicle in vehicleCache.Vehicles)
{
tags.NormalizeAccess(vehicleCache, vehicle, highway, profileTags);
}
// add whitelisted tags but only when they haven't been considered for normalization.
foreach (var vehicle in vehicleCache.Vehicles)
{
foreach (var key in vehicle.ProfileWhiteList)
{
var value = string.Empty;
if (tags.TryGetValue(key, out value))
{
if (!normalizedTags.Contains(key))
{
profileTags.AddOrReplace(key, value);
}
}
}
}
return(true);
}
/// <summary>
/// Normalizes nothing but the access tags.
/// </summary>
public static void NormalizeAccess(this IAttributeCollection tags, VehicleCache vehicleCache, Vehicle vehicle, string highwayType, IAttributeCollection profileTags)
{
var access = vehicleCache.CanTraverse(new AttributeCollection(new Attribute("highway", highwayType)), vehicle, false);
tags.NormalizeAccess(profileTags, access, vehicle.VehicleTypes);
}