/// <summary>
/// Writes the given help content within the specified display region.
/// </summary>
/// <param name="textWriter">The text writer that receives the content.</param>
/// <param name="content">The source content.</param>
/// <param name="formatInfo">The format info.</param>
/// <returns>The number of virtually rendered lines of help content.</returns>
internal static int WriteContent(TextWriter textWriter, IEnumerable <string> content, FormatInfo formatInfo)
{
var virtualRowId = 0;
var firstRow = formatInfo.StartRow;
var lastRow = firstRow + formatInfo.FormatHeight - 1;
var insertCrLf = false;
foreach (var line in content)
{
var charArray = line.ToCharArray();
var js = formatInfo.LineFormatter.CreateFormatted(line);
foreach (var span in js.SplitToWidth(formatInfo.FormatWidth - js.Indent))
{
if (virtualRowId >= firstRow && virtualRowId <= lastRow)
{
if (insertCrLf)
{
textWriter.WriteLine();
}
for (var i = 0; i < js.Indent; i++)
{
textWriter.Write(Space);
}
textWriter.Write(charArray, span.Start, span.Length);
insertCrLf = true;
}
++virtualRowId;
}
}
return(virtualRowId);
}
/// <summary>
/// Creates a new instance of this type.
/// </summary>
/// <param name="textWriter">Text writer that receives the output.</param>
/// <param name="formatInfo">Formatting information.</param>
public HelpWriter(TextWriter textWriter, FormatInfo formatInfo)
{
FormatInfo = formatInfo ?? throw new ArgumentNullException(nameof(formatInfo));
TextWriter = textWriter ?? throw new ArgumentNullException(nameof(textWriter));
}
