private static IEnumerable <ConsoleStringSegment> MergeSameColor(IEnumerable <ConsoleStringSegment> segments)
{
var e = segments.Where(x => x.Content.Length > 0).GetEnumerator();
if (!e.MoveNext())
{
yield break;
}
var temp = e.Current;
while (e.MoveNext())
{
if (temp.Color == e.Current.Color)
{
temp = new ConsoleStringSegment(temp.Content + e.Current.Content, temp.Color);
}
else
{
yield return(temp);
temp = e.Current;
}
}
yield return(temp);
}
public ConsoleString this[Range range]
{
get
{
var(offset, length) = range.GetOffsetAndLength(Length);
var segments = ImmutableList <ConsoleStringSegment> .Empty;
for (int index = 0; length > 0; index++)
{
if (index >= _content.Length)
{
throw new ArgumentOutOfRangeException(nameof(range), $"Index and length must refer to a location within the {nameof(ConsoleString)}.");
}
if (_content[index].Content.Length <= offset)
{
offset -= _content[index].Content.Length;
}
else
{
var segment = new ConsoleStringSegment
(
_content[index].Content.Substring
(
offset,
Math.Min(_content[index].Content.Length, length) - offset
),
_content[index].Color
);
segments = segments.Add(segment);
offset = 0;
length -= segment.Content.Length;
}
}
return(new ConsoleString(segments));
}
}
/// <summary>
/// Creates a new <see cref="ConsoleString"/> from a single segment.
/// </summary>
/// <param name="segment">The string segment.</param>
/// <returns>A new <see cref="ConsoleString"/> defined by the single element <paramref name="segment"/>.</returns>
public static ConsoleString Create(ConsoleStringSegment segment)
{
return(new ConsoleString(new[] { segment }));
}