/// <summary>
/// Allow special syntax to retrieve property values:
/// ${property:PropertyName}
/// ${property:PropertyName??DefaultValue}
/// ${property:ContainerName/PropertyName}
/// ${property:ContainerName/PropertyName??DefaultValue}
/// A container is a Properties instance stored in the PropertyService. This is
/// used by many AddIns to group all their properties into one container.
/// </summary>
static string GetProperty(string propertyName)
{
string defaultValue = "";
int pos = propertyName.LastIndexOf("??", StringComparison.Ordinal);
if (pos >= 0)
{
defaultValue = propertyName.Substring(pos + 2);
propertyName = propertyName.Substring(0, pos);
}
Properties properties = ServiceSingleton.GetRequiredService <IPropertyService>().MainPropertiesContainer;
pos = propertyName.IndexOf('/');
while (pos >= 0)
{
properties = properties.NestedProperties(propertyName.Substring(0, pos));
propertyName = propertyName.Substring(pos + 1);
pos = propertyName.IndexOf('/');
}
return(properties.Get(propertyName, defaultValue));
}
/// <inheritdoc cref="Properties.NestedProperties"/>
public Properties NestedProperties(string key)
{
return(properties.NestedProperties(key));
}