public static Unit CreateUnit(string name)
{
var pure_unit_name = GetUnitName(name);
if (!UnitFiles.ContainsKey(pure_unit_name))
{
return(null);
}
var files = UnitFiles[pure_unit_name];
var ext = Path.GetExtension(name);
if (!UnitTypes.ContainsKey(ext))
{
return(null);
}
var type = UnitTypes[ext];
var descriptor = GetUnitDescriptor(pure_unit_name);
var context = new UnitInstantiationContext();
context.Substitutions["p"] = pure_unit_name;
context.Substitutions["P"] = StringEscaper.Unescape(pure_unit_name);
context.Substitutions["f"] = "/" + StringEscaper.Unescape(pure_unit_name);
context.Substitutions["H"] = Environment.MachineName;
var unit_parameter = GetUnitParameter(name);
if (string.IsNullOrEmpty(unit_parameter))
{
unit_parameter = descriptor.DefaultInstance;
}
if (!string.IsNullOrEmpty(unit_parameter))
{
context.Substitutions["i"] = unit_parameter;
context.Substitutions["I"] = StringEscaper.Unescape(unit_parameter);
context.Substitutions["f"] = "/" + StringEscaper.Unescape(unit_parameter);
}
descriptor.InstantiateDescriptor(context);
return((Unit)Activator.CreateInstance(type, name, descriptor));
}
internal void InstantiateDescriptor(UnitInstantiationContext ctx)
{
var self_properties = this.GetType().GetProperties();
var properties_with_attribute = self_properties.Where(prop => prop.GetCustomAttributes(typeof(UnitPropertyAttribute), true).Any());
foreach (var property in properties_with_attribute)
{
switch (property.GetValue(this))
{
case string str:
property.SetValue(this, ctx.Substitute(str));
break;
case List <string> list:
for (int i = 0; i < list.Count; i++)
{
list[i] = ctx.Substitute(list[i]);
}
break;
}
}
}