/// <summary>
/// Gets the word at position. Line and column numbers start from 1.
/// </summary>
public static WordAtPosition GetWordAtPosition(this IReadonlyTextDocument document, int line, int column)
{
if (line <= 0 || column <= 0)
{
return(WordAtPosition.Invalid);
}
if (line > 0 && (line > document.LineCount))
{
return(WordAtPosition.Invalid);
}
string lineText = document.GetLineText(line);
// Check the column exists on the line. Allow the column to
// be just after the last text character.
if (column - 1 > lineText.Length)
{
return(WordAtPosition.Invalid);
}
return(TextEditorWords.GetWordAtPosition(
column,
TextEditorWords.DefaultWordRegex,
lineText));
}
// LCS()
static void WriteHunks(Queue <DiffHunk> qh, IReadonlyTextDocument baseDocument, IReadonlyTextDocument changedDocument, StringBuilder sb)
{
DiffHunk item;
int remStart;
int insStart;
int distance = 0;
do
{
item = qh.Dequeue();
remStart = System.Math.Max(1, item.RemoveStart - (distance != 0 ? distance : item.Context));
insStart = System.Math.Max(1, item.InsertStart - (distance != 0 ? distance : item.Context));
for (int i = System.Math.Min(remStart, insStart); i < item.RemoveStart; i++)
{
sb.Append(" ").AppendLine(baseDocument.GetLineText(i, false));
}
for (int i = item.RemoveStart; i < item.RemoveStart + item.Removed; i++)
{
sb.Append("-").AppendLine(baseDocument.GetLineText(i, false));
}
for (int i = item.InsertStart; i < item.InsertStart + item.Inserted; i++)
{
sb.Append("+").AppendLine(changedDocument.GetLineText(i, false));
}
if (qh.Count != 0)
{
distance = item.DistanceTo(qh.Peek());
}
} while (qh.Count != 0);
int remEnd = System.Math.Min(baseDocument.LineCount, item.RemoveStart + item.Removed + item.Context);
for (int i = item.RemoveStart + item.Removed; i < remEnd; i++)
{
sb.Append(" ").AppendLine(baseDocument.GetLineText(i, false));
}
}
// Snatched from DefaultFormattingStrategy
private string GetIndent(IReadonlyTextDocument d, int lineNumber, int terminateIndex)
{
string lineText = d.GetLineText(lineNumber);
if (terminateIndex > 0)
{
lineText = terminateIndex < lineText.Length ? lineText.Substring(0, terminateIndex) : lineText;
}
StringBuilder whitespaces = new StringBuilder();
foreach (char ch in lineText)
{
if (!char.IsWhiteSpace(ch))
{
break;
}
whitespaces.Append(ch);
}
return(whitespaces.ToString());
}
// Snatched from DefaultFormattingStrategy
private string GetIndent (IReadonlyTextDocument d, int lineNumber, int terminateIndex)
{
string lineText = d.GetLineText (lineNumber);
if(terminateIndex > 0)
lineText = terminateIndex < lineText.Length ? lineText.Substring(0, terminateIndex) : lineText;
StringBuilder whitespaces = new StringBuilder ();
foreach (char ch in lineText) {
if (!char.IsWhiteSpace (ch))
break;
whitespaces.Append (ch);
}
return whitespaces.ToString ();
}