private static bool IsMaskableEntityType(TextAnalyticsEntity entity)
{
switch (entity.Category)
{
case EntityCategory.Person:
case EntityCategory.Organization:
case EntityCategory.PhoneNumber:
case EntityCategory.Email:
case EntityCategory.URL:
case EntityCategory.IPAddress:
case EntityCategory.Quantity:
return(true);
default: return(false);
}
}
private static string RedactEntityInText(string text, TextAnalyticsEntity entity)
{
var preMask = text.Substring(0, entity.Offset);
var postMask = text.Substring(entity.Offset + entity.Length, text.Length - (entity.Offset + entity.Length));
if (entity.Category == EntityCategory.Quantity && entity.SubCategory.Equals("Number", StringComparison.OrdinalIgnoreCase))
{
text = preMask + new string('#', entity.Length) + postMask;
}
else
{
if (!string.IsNullOrEmpty(entity.SubCategory))
{
text = $"{preMask}#{entity.Category}-{entity.SubCategory}#{postMask}";
}
else
{
text = $"{preMask}#{entity.Category}#{postMask}";
}
}
return(text);
}
private static RecognizedPhrase RedactEntityInRecognizedPhrase(RecognizedPhrase recognizedPhrase, TextAnalyticsEntity entity)
{
if (!IsMaskableEntityType(entity) || !recognizedPhrase.NBest.Any())
{
return(recognizedPhrase);
}
var nBest = recognizedPhrase.NBest.FirstOrDefault();
// only keep first nBest:
recognizedPhrase.NBest = new[] { nBest };
var displayForm = nBest.Display;
var preMask = displayForm.Substring(0, entity.Offset);
var postMask = displayForm.Substring(entity.Offset + entity.Length, displayForm.Length - (entity.Offset + entity.Length));
if (entity.Category == EntityCategory.Quantity && entity.SubCategory.Equals("Number", StringComparison.OrdinalIgnoreCase))
{
displayForm = preMask + new string('#', entity.Length) + postMask;
}
else
{
if (!string.IsNullOrEmpty(entity.SubCategory))
{
displayForm = $"{preMask}#{entity.Category}-{entity.SubCategory}#{postMask}";
}
else
{
displayForm = $"{preMask}#{entity.Category}#{postMask}";
}
}
nBest.Display = displayForm;
return(recognizedPhrase);
}
