/// <summary>
/// Warps one long line to sevaral short lines (<=len), additional spaces are preserved
/// </summary>
/// <param name="line"></param>
/// <param name="len"></param>
/// <returns></returns>
private List <string> WrapLine(string line, int len)
{
if (string.IsNullOrEmpty(line) || line.Length <= len)
{
return(new List <string>()
{
line
});
}
List <string> newLines = new List <string>();
// char lastChar = '\0';
while (line.Length >= len)
{
int pos = -1;
for (int i = len - 1; i > 0; i--)
{
DelimiterItem delim = _delimiters.Find(d => d.Char == line[i]);
if (delim != null)
{
WrapMode wrapMode = delim.WrapMode;
if (wrapMode == WrapMode.Both)
{
char charBefore = line[i - 1];
wrapMode = charBefore == ' ' ? WrapMode.Before : WrapMode.After;
}
pos = wrapMode == WrapMode.Before ? i : i + 1;
break;
}
}
if (pos == -1)
{
pos = len - 1;
}
if (newLines.Count == 0)
{ // keep the indentation in the first line
line = line.TrimEnd();
}
else
{
// no indentation in wrapped lines
line = line.Trim();
}
newLines.Add(line.Substring(0, pos));
line = line.Substring(pos).Trim();
}
if (line.Length > 0)
{
newLines.Add(line);
}
return(newLines);
}
/// <summary>
/// Warps one long line to sevaral short lines (<=len), additional spaces are preserved
/// </summary>
/// <param name="line"></param>
/// <param name="len"></param>
/// <returns></returns>
private List <string> WrapLine(string line, int len)
{
if (string.IsNullOrEmpty(line) || line.Length <= len)
{
return(new List <string>()
{
line
});
}
List <string> newLines = new List <string>();
while (line.Length >= len)
{
int pos = -1;
for (int i = len - 1; i > 0; i--)
{
//Debug.WriteLine(line[i]);
DelimiterItem delim = _delimiters.Find(d => d.Char == line[i]);
if (delim != null)
{
pos = delim.WrapBefore ? i : i + 1;
//Debug.WriteLine($"delim {line[i]}, pos={pos}");
break;
}
}
if (pos == -1)
{
pos = len - 1;
}
//Debug.WriteLine($"newline '{line}'");
//Debug.WriteLine($"pos={pos}, sub='{line.Substring(0, pos)}'");
newLines.Add(line.Substring(0, pos));
line = line.Substring(pos);
//Debug.WriteLine($"line='{line}'");
}
if (line.Length > 0)
{
newLines.Add(line);
}
return(newLines);
}
