/// <summary>
/// Converts a hex string at the specified index and length of <paramref name="hex"/>
/// into an <see cref="int"/>.
/// <para/>
/// NOTE: This was hexToInt() in Lucene
/// </summary>
/// <param name="hex">
/// A string in capital or lower case hex, of no more then 16
/// characters.
/// </param>
/// <param name="startIndex">The index of the first character to begin parsing.</param>
/// <param name="length">The number of characters to parse.</param>
/// <exception cref="FormatException">if the string is more than 16 characters long, or if any
/// character is not in the set [0-9a-fA-f]</exception>
/// <exception cref="ArgumentOutOfRangeException">
/// <paramref name="startIndex"/> or <paramref name="length"/> is less than zero.
/// <para/>
/// -or-
/// <para/>
/// <paramref name="startIndex"/> and <paramref name="length"/> refer to a location outside of <paramref name="hex"/>.
/// </exception>
// LUCENENET specific overload
public static int HexToInt32(string hex, int startIndex, int length)
{
if ((length > 16) || !Integer.TryParse(hex, startIndex, length, radix: 16, out int result))
{
throw NumberFormatException.Create();
}
return(result);
}
internal static int Get(int i, string s)
{
// LUCENENET: Optimized so we don't alocate a substring
if (!Integer.TryParse(s, i, 1, radix: 10, out int result))
{
return(1);
}
return(result);
}