public long GetLength(TextSegment_I textSegment)
{
if (textSegment == null)
{
return(0);
}
return(textSegment.EndPosition - textSegment.StartPosition + 1);
}
public long GetStartCaretPosition(TextSegment_I textSegment)
{
if (textSegment == null)
{
return(-1);
}
return(textSegment.StartPosition);
}
public long GetEndCaretPosition(TextSegment_I textSegment)
{
if (textSegment == null)
{
return(-1);
}
return(textSegment.EndPosition + 1);
}
public string GetValue(TextSegment_I segment, TextSourceString source)
{
if (segment.CachedValue != null)
{
return(segment.CachedValue);
}
string substringValue;
if (segment.StartPosition <= int.MaxValue && segment.Length() <= int.MaxValue)
{
substringValue = source.Content.Substring((int)segment.StartPosition, (int)segment.Length());
}
else
{
throw new NotSupportedException("Strings do not support sizes greather than Int32.Max or 2,147,483,647.");
}
return(substringValue);
}
/// <summary>
/// Gets the value of the text source.
/// </summary>
/// <param name="segment"></param>
/// <returns></returns>
public string GetValue(TextSegment_I segment)
{
var source = segment.Source;
string result;
switch (source.Type)
{
case TextSourceType.File:
{
result = XTextual.TextSources.Files.GetValue(segment, (TextSourceFile)source);
break;
}
case TextSourceType.Stream:
{
result = XTextual.TextSources.Streams.GetValue(segment, (TextSourceStream)source);
break;
}
case TextSourceType.String:
{
result = XTextual.TextSources.Strings.GetValue(segment, (TextSourceString)source);
break;
}
default:
{
throw XExceptions.Exception("TextSourceType is not supported.");
}
}
if (segment.SupportsCachedValue)
{
segment.CachedValue = result;
}
return(result);
}
/// <summary>
/// Gets or sets the start position of the segment
/// </summary>
public static long StartCaretPosition(this TextSegment_I segment)
{
return(XTextual.TextSegments.GetStartCaretPosition(segment));
}
/// <summary>
/// Gets the length of the segment
/// </summary>
public static long Length(this TextSegment_I segment)
{
return(XTextual.TextSegments.GetLength(segment));
}
/// <summary>
/// Gets the value of the text segment.
/// </summary>
/// <returns>The actual string value of the text segment from the source.</returns>
public static string GetValue(this TextSegment_I segment)
{
return(XTextual.TextSegments.GetValue(segment));
}
public string GetValue(TextSegment_I segment, TextSourceFile source)
{
throw new System.NotImplementedException();
}
public string GetValue(TextSegment_I textSegment)
{
return(XTextual.TextSources.GetValue(textSegment));
}
