public static string TrimMiddle(this string @this, int limitLength, string omitPlaceholder = null)
{
const string defaultOmitPlaceholder = "...";
if (omitPlaceholder == null)
{
omitPlaceholder = defaultOmitPlaceholder;
}
Guards.ThrowIfNot(limitLength >= omitPlaceholder.Length);
if (string.IsNullOrEmpty(@this) || @this.Length <= limitLength)
{
return(@this);
}
if (limitLength == omitPlaceholder.Length)
{
return(omitPlaceholder);
}
var halfLength = (limitLength - omitPlaceholder.Length) / 2;
var bias = (limitLength - omitPlaceholder.Length) % 2;
var firstHalfString = @this.Substring(0, halfLength + bias);
var secondHalfString = @this.Substring(@this.Length - halfLength);
return($"{firstHalfString}{omitPlaceholder}{secondHalfString}");
}
