namespace ResXManager.Model

{

using System.Globalization;

using System.Linq;

using System.Text.RegularExpressions;

using JetBrains.Annotations;

public class ExcelRange

{

[NotNull]

private static readonly Regex _rangeRegex = new Regex(@"(((?<sheetName>\w+)|('(?<sheetName>.*?)'))!)?\$?(?<startColumn>[A-Z]+)\$?(?<startRow>[0-9]*)(:\$?(?<endColumn>[A-Z]+)\$?(?<endRow>[0-9]*))?");

public ExcelRange([CanBeNull] string definition)

{

if (string.IsNullOrEmpty(definition))

return;

var match = _rangeRegex.Match(definition);

if (!match.Success)

return;

var startColumn = match.Groups[@"startColumn"]?.Value;

var endColumn = match.Groups[@"endColumn"]?.Value;

var startRow = match.Groups[@"startRow"]?.Value;

var endRow = match.Groups[@"endRow"]?.Value;

if (string.IsNullOrEmpty(endColumn))

endColumn = startColumn;

if (string.IsNullOrEmpty(endRow))

endRow = startRow;

StartColumnIndex = ColumnToIndex(startColumn);

EndColumnIndex = ColumnToIndex(endColumn);

StartRowIndex = string.IsNullOrEmpty(startRow) ? 0 : int.Parse(startRow, CultureInfo.InvariantCulture) - 1;

EndRowIndex = string.IsNullOrEmpty(endRow) ? int.MaxValue : int.Parse(endRow, CultureInfo.InvariantCulture) - 1;

}

public int EndColumnIndex

{

get;

}

public int StartColumnIndex

{

get;

}

public int EndRowIndex

{

get;

}

public int StartRowIndex

{

get;

}

private static int ColumnToIndex([CanBeNull] string column)

{

return string.IsNullOrEmpty(column) ? 0 : column.Aggregate(0, (current, c) => current * 26 + (c - 'A' + 1)) - 1;

}

}

}