protected virtual IList <int> GetFieldsLength(IEnumerable <DataRow> rows)
{
var fieldsLength = new List <int>();
if (rows.Count() == 0)
{
return(new List <int>(0));
}
for (int i = 0; i < rows.ElementAt(0).ItemArray.Count(); i++)
{
var cells = new List <ICellFormatter>();
//Header
var displayHeader = LineFormatter.BuildHeader(rows.ElementAt(0).Table, i);
if (displayHeader != null)
{
cells.Add(displayHeader);
}
//For each row
foreach (var r in rows)
{
var display = LineFormatter.Build(r, i);
cells.Add(display);
}
fieldsLength.Add(cells.Max(f => f.GetCellLength()));
}
return(fieldsLength);
}
public virtual IEnumerable <string> BuildContent(IEnumerable <DataRow> rows, int rowCount, bool compare)
{
var output = new List <string>();
//Empty resultset
if (rows.Count() == 0)
{
output.Add("This result set is empty.");
return(output);
}
//calculate row count to diplay
int maxRows = (rowCount <= Math.Min(rows.Count(), MAX_ROWS_DISPLAYED)) ? rowCount : Math.Min(rows.Count(), MAX_ROWS_DISPLAYED);
var subsetRows = rows.Take(maxRows);
IList <int> fieldLength = GetFieldsLength(subsetRows);
//information about #Rows and #Cols
var sbInfo = new System.Text.StringBuilder();
sbInfo.AppendFormat("ResultSet with {0} row", rowCount);
if (rowCount > 1)
{
sbInfo.Append('s');
}
output.Add(sbInfo.ToString());
//separator
output.Add(GetFirstIndentation() + GetSeparator(fieldLength));
//header
var sbHeader = new System.Text.StringBuilder();
sbHeader.Append(' ', 4);
for (int i = 0; i < fieldLength.Count; i++)
{
var displayHeader = LineFormatter.BuildHeader(rows.ElementAt(0).Table, i);
if (displayHeader != null)
{
sbHeader.AppendFormat("| {0} ", displayHeader.GetText(fieldLength[i]));
}
}
sbHeader.Append("|");
output.Add(sbHeader.ToString());
//separator
output.Add(GetFirstIndentation() + GetSeparator(fieldLength));
//TestCases
for (int i = 0; i < maxRows; i++)
{
var sbRow = new System.Text.StringBuilder();
sbRow.Append(GetFirstIndentation());
for (int j = 0; j < subsetRows.ElementAt(i).ItemArray.Count(); j++)
{
ICellFormatter display = null;
if (compare)
{
display = LineFormatter.Build(rows.ElementAt(i), j);
}
else
{
display = LineFormatter.BuildValue(rows.ElementAt(i), j);
}
sbRow.AppendFormat("| {0} ", display.GetText(fieldLength[j]));
}
sbRow.Append("|");
output.Add(sbRow.ToString());
}
//footer (separator)
output.Add(GetFirstIndentation() + GetSeparator(fieldLength));
//If needed display # skipped rows
if (rowCount > MAX_ROWS_DISPLAYED)
{
var sbSkip = new System.Text.StringBuilder();
sbSkip.AppendFormat(GetFirstIndentation());
sbSkip.Append(new string('.', 3));
sbSkip.Append(new string(' ', 3));
sbSkip.AppendFormat("{0} (of {1}) rows skipped for display purpose", rowCount - MAX_ROWS_DISPLAYED, rowCount);
sbSkip.Append(new string(' ', 3));
sbSkip.Append(new string('.', 3));
output.Add(sbSkip.ToString());
}
output.Add("");
return(output);
}