public static bool DoesFormulaContainComponent(string formula, string component)
{
if (component == string.Empty)
{
return(false);
}
formula = formula.ToLower();
component = component.ToLower();
for (int index = formula.IndexOf(component); index >= 0; index = formula.IndexOf(component))
{
if (index != 0) //check character before place of finding
{
if (EM_Helpers.IsLetterOrDigit(formula.ElementAt(index - 1)) || formula.ElementAt(index - 1) == '_')
{
formula = formula.Substring(index + 1);
continue; //if a letter, digit or underscore: word does not begin with component (e.g. look for 'bun' find 'yabun')
}
}
index = index + component.Length;
if (index < formula.Length - 1) //check character after place of finding
{
if (EM_Helpers.IsLetterOrDigit(formula.ElementAt(index)) || formula.ElementAt(index) == '_')
{
formula = formula.Substring(1);
continue; //if a letter, digit or underscore: word does not end with component (e.g. look for 'bun_s' find 'bun')
}
}
return(true);
}
return(false);
}
public static bool ContainsIllegalChar(string toTest, ref string errorText, string additionallyAllowedChar = "")
{
string illegal = string.Empty;
foreach (char c in toTest.ToList <char>())
{
if (!EM_Helpers.IsLetterOrDigit(c) && c != '_' && !additionallyAllowedChar.Contains(c))
{
illegal += "'" + c + "' ";
}
}
if (illegal != string.Empty)
{
errorText = "Illegal character(s) " + illegal + "used";
}
return(illegal != string.Empty);
}