/////////////////////////////////////////////////////////////////////////////////
public static string Join(string delimiter, TaggedTextCollection lines)
{
StringBuilder sb = new StringBuilder();
foreach (TaggedText t in lines)
{
if (sb.Length == 0)
{
sb.Append(t.Text);
}
else
{
sb.Append(delimiter).Append(t.Text);
}
}
return(sb.ToString());
}
/////////////////////////////////////////////////////////////////////////////////
public static TaggedTextCollection SplitTextInLines(string text,
ref int maxLineWidth)
{
int lineWrapAt = maxLineWidth;
maxLineWidth = 0;
TaggedTextCollection lines = new TaggedTextCollection();
if (text == null)
{
return(lines);
}
// Add CRLF delimitted chunks of text to lines collection.
// 'start' points to beginning of next line
// 'end' points to next CRLF or end of text
const string delimiter = "\n";
int start = 0;
while (start < text.Length)
{
// Find next CRLF (if any)
//
int end = text.IndexOf(delimiter, start);
int skipChars = delimiter.Length;
// Calculate length of the chunk between line 'start' and next CRLF
// (or text length if CRLF is not found).
//
int len = end < 0 ? text.Length - start : end - start;
if (lineWrapAt > 0 && len > lineWrapAt)
{
skipChars = 0;
// If line should wrap, find space between words
//
for (len = lineWrapAt; len > 0; --len)
{
char c = text[start + len];
// Skip all (found) spaces (between words) backwards
//
if (char.IsWhiteSpace(c))
{
++skipChars;
while (len > 0 &&
char.IsWhiteSpace(text[start + len - 1]))
{
++skipChars;
--len;
}
}
// If found space between words or other delimiter character
//
if (skipChars > 0 || c == '\\' || c == '/')
{
break;
}
}
if (len <= 0) // not found any space between words
{
len = lineWrapAt; // reset to original 'wrap at' position
}
}
maxLineWidth = Math.Max(len, maxLineWidth);
// Add chunk to lines colletion
//
lines.Add(TaggedText.ClearFromControlCharacters(
text.Substring(start, len)));
// Move 'start' at the beginning of next line (i.e. skip CRLF)
//
start += len + skipChars;
}
return(lines);
}
