/// <summary>
/// Initializes a new instance of the <see cref="CsvRow"/> class.
/// </summary>
/// <param name="file">
/// The file.
/// </param>
public CsvRow(CsvFile file)
{
this.File = file;
this.Values = new object[file.Columns.Count];
}
/// <summary>
/// Loads from the specified stream reader.
/// </summary>
/// <param name="s">The stream reader.</param>
/// <param name="cultureInfo">The culture info.</param>
/// <returns>
/// A <see cref="CsvFile" />.
/// </returns>
/// <exception cref="System.ArgumentNullException">s;The stream reader must be specified.</exception>
/// <exception cref="System.InvalidOperationException">Invalid header.</exception>
/// <exception cref="System.FormatException">Wrong number of columns on line + lineNumber</exception>
public static CsvFile Load(StreamReader s, CultureInfo cultureInfo = null)
{
if (s == null)
{
throw new ArgumentNullException("s", "The stream reader must be specified.");
}
if (cultureInfo == null)
{
cultureInfo = CultureInfo.InvariantCulture;
}
var separator = cultureInfo.TextInfo.ListSeparator;
var headerLine = s.ReadLine();
if (headerLine == null)
{
throw new InvalidOperationException("Invalid header.");
}
var headers = SplitLine(headerLine, separator[0]);
int n = headers.Length;
// Create a string collection for each column
var items = new ValueList[n];
for (int i = 0; i < n; i++)
{
items[i] = new ValueList();
}
// Read all rows
int lineNumber = 1;
while (!s.EndOfStream)
{
lineNumber++;
var line = s.ReadLine();
if (line == null)
{
continue;
}
var fields = SplitLine(line, separator[0]);
if (fields.Length != n)
{
throw new FormatException("Wrong number of columns on line " + lineNumber);
}
for (int i = 0; i < n; i++)
{
items[i].Add(fields[i]);
}
}
var file = new CsvFile();
// Determine the type of each column from the data
for (int i = 0; i < n; i++)
{
string name, unit;
SplitHeader(headers[i], out name, out unit);
file.Columns.Add(new CsvColumn(name, unit, items[i].GetSmallestCommonType(cultureInfo)));
}
// Parse the values (and box them)
for (int j = 0; j < items[0].Count; j++)
{
var item = new CsvRow(file);
for (int i = 0; i < file.Columns.Count; i++)
{
item.Values[i] = file.Columns[i].Convert(items[i][j], cultureInfo);
}
file.Rows.Add(item);
}
return(file);
}
