/// <summary>
/// Creates a collection of character regions which represent all of the characters
/// in the specified source text.
/// </summary>
/// <param name="text">The source text from which to create character regions.</param>
/// <returns>The collection of character regions that was created.</returns>
public static IEnumerable<CharacterRegion> CreateFromSourceText(String text)
{
Contract.Require(text, "text");
var regions = new List<CharacterRegion>();
var characters = (from c in text
where
!Char.IsSurrogate(c) && (!Char.IsWhiteSpace(c) || c == ' ')
select c).Distinct().OrderBy(x => x).ToArray();
if (text != null && text.Length > 0)
{
var start = characters[0];
for (var i = 0; i < characters.Length; i++)
{
var next = (i + 1 >= characters.Length) ? (Char?)null : characters[i + 1];
var diff = (next.HasValue ? next.Value - characters[i] : Int32.MaxValue);
if (diff != 1)
{
var region = new CharacterRegion(start, characters[i]);
regions.Add(region);
if (i + 1 < characters.Length)
{
start = characters[i + 1];
}
}
}
}
return regions.OrderBy(x => x.Start).ToList();
}
/// <summary>
/// Creates a collection of character regions which represent all of the characters
/// in the specified source text.
/// </summary>
/// <param name="text">The source text from which to create character regions.</param>
/// <returns>The collection of character regions that was created.</returns>
public static IEnumerable <CharacterRegion> CreateFromSourceText(String text)
{
Contract.Require(text, nameof(text));
var regions = new List <CharacterRegion>();
var characters = (from c in text
where
!Char.IsSurrogate(c) && (!Char.IsWhiteSpace(c) || c == ' ')
select c).Distinct().OrderBy(x => x).ToArray();
if (text != null && text.Length > 0)
{
var start = characters[0];
for (var i = 0; i < characters.Length; i++)
{
var next = (i + 1 >= characters.Length) ? (Char?)null : characters[i + 1];
var diff = (next.HasValue ? next.Value - characters[i] : Int32.MaxValue);
if (diff != 1)
{
var region = new CharacterRegion(start, characters[i]);
regions.Add(region);
if (i + 1 < characters.Length)
{
start = characters[i + 1];
}
}
}
}
return(regions.OrderBy(x => x.Start).ToList());
}
