private static string MakeShortFileName(string longName)
{
if (IsoUtilities.IsValidFileName(longName))
{
return(longName);
}
char[] shortNameChars = longName.ToUpper(CultureInfo.InvariantCulture).ToCharArray();
for (int i = 0; i < shortNameChars.Length; ++i)
{
if (!IsoUtilities.IsValidDChar(shortNameChars[i]) && shortNameChars[i] != '.' && shortNameChars[i] != ';')
{
shortNameChars[i] = '_';
}
}
string[] parts = IsoUtilities.SplitFileName(new string(shortNameChars));
if (parts[0].Length + parts[1].Length > 30)
{
parts[1] = parts[1].Substring(0, Math.Min(parts[1].Length, 3));
}
if (parts[0].Length + parts[1].Length > 30)
{
parts[0] = parts[0].Substring(0, 30 - parts[1].Length);
}
string candidate = parts[0] + '.' + parts[1] + ';' + parts[2];
// TODO: Make unique
return(candidate);
}