/// <summary>
/// Computes the differences between two strings and highlights them with a custom formatting.
/// </summary>
/// <param name="before">The old string.</param>
/// <param name="after">The new string.</param>
/// <param name="removed">Formatting for removed strings.</param>
/// <param name="added">Formatting for added strings.</param>
public static void Compute(ref string before, ref string after, TextDifference.Format removed, TextDifference.Format added)
{
var Before = new TextDifference.Info(before, removed);
var After = new TextDifference.Info(after, added);
while (Before.Words.Count > 0 && After.Words.Count > 0)
{
if (Before.Words[0] == After.Words[0])
{
Before.RemoveFirstWord();
After.RemoveFirstWord();
}
else
{
After.Format(Before.Words);
Before.Format(After.Words);
}
if (After.Words.Count <= 0)
{
Before.FormatEnding();
}
if (Before.Words.Count <= 0)
{
After.FormatEnding();
}
}
before = Before.Text;
after = After.Text;
}
public Info(string text, TextDifference.Format format)
{
Text = text;
FormatStart = format.Start;
FormatEnd = format.End;
}