/// <summary>
/// Writes a table to the console.
/// </summary>
public static void Write <TElement>(IConsole console,
IEnumerable <TElement> collection,
IEnumerable <string> headers,
string?footnotes,
params Expression <Func <TElement, string> >[] values)
{
int columnsCount = values.Length;
Func <TElement, string>[] columnFunctions = values.Select(x => x.Compile())
.ToArray();
int[] columnWidths = (from cf in columnFunctions
let x = collection.Select(cf)
.Max(x => x.Length)
select x).ToArray();
//Update column widths for smaller than header length
for (int i = 0; i < columnsCount; ++i)
{
string header = headers.ElementAtOrDefault(i) ?? string.Empty;
if (columnWidths[i] < header.Length)
{
columnWidths[i] = header.Length;
}
}
int totalWidth = columnWidths.Sum() - 1 + (columnsCount) * 3;
//Write top border
console.Output.WriteLine(new string('=', totalWidth));
//Write table header
if (headers.Count() > 0)
{
for (int i = 0; i < columnsCount; ++i)
{
string header = headers.ElementAtOrDefault(i) ?? string.Empty;
int targetWidth = columnWidths[i];
console.Output.Write(' ');
console.Output.Write(header.PadRight(targetWidth));
if (i + 1 < columnsCount)
{
console.Output.Write(" |");
}
}
console.Output.WriteLine();
//Write middle line
console.Output.WriteLine(new string('=', totalWidth));
}
//Write table body
foreach (TElement item in collection)
{
for (int i = 0; i < columnsCount; ++i)
{
Func <TElement, string> column = columnFunctions[i];
console.Output.Write(' ');
string value = columnFunctions[i].Invoke(item);
int targetWidth = columnWidths[i];
console.Output.Write(value.PadRight(targetWidth));
if (i + 1 < columnsCount)
{
console.Output.Write(" |");
}
}
console.Output.WriteLine();
}
// Write bottom border
console.Output.WriteLine(new string('=', totalWidth));
// Write footnotes
if (!string.IsNullOrWhiteSpace(footnotes))
{
console.Output.WriteLine(TextUtils.AdjustNewLines(footnotes));
console.Output.WriteLine(new string('=', totalWidth));
}
}
