public static List <string> Preprocess(EngineState s, IEnumerable <string> strs, bool escapePercent = true)
{
return(Unescape(ExpandVariables(s, strs), escapePercent));
}
/// <summary>
/// Expand #1, #2, #3, etc...
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static string ExpandSectionParams(EngineState s, string str)
{
// Expand #1 into its value
Regex regex = new Regex(@"(?<!#)(#[0-9]+)", RegexOptions.Compiled);
MatchCollection matches = regex.Matches(str);
while (0 < matches.Count)
{
StringBuilder b = new StringBuilder();
for (int x = 0; x < matches.Count; x++)
{
string pIdxStr = matches[x].Groups[1].ToString().Substring(1);
if (!int.TryParse(pIdxStr, NumberStyles.Integer, CultureInfo.InvariantCulture, out int pIdx))
{
throw new InternalException("ExpandVariables failure");
}
if (x == 0)
{
b.Append(str.Substring(0, matches[0].Index));
}
else
{
int startOffset = matches[x - 1].Index + matches[x - 1].Value.Length;
int endOffset = matches[x].Index - startOffset;
b.Append(str.Substring(startOffset, endOffset));
}
string param;
if (s.CurSectionParams.ContainsKey(pIdx))
{
param = s.CurSectionParams[pIdx];
}
else
{
if (s.CurDepth == 1) // Dirty Hack for WB082 compatibility
{
param = $"##{pIdx}"; // [Process] -> Should return #{pIdx} even it was not found
}
else
{
param = string.Empty; // Not in entry section -> return string.Empty;
}
}
b.Append(param);
if (x + 1 == matches.Count) // Last iteration
{
b.Append(str.Substring(matches[x].Index + matches[x].Value.Length));
}
}
str = b.ToString();
matches = regex.Matches(str);
}
// Escape #a (Current Argument Count)
if (str.IndexOf("#a", StringComparison.Ordinal) != -1)
{
str = StringHelper.ReplaceEx(str, "#a", s.CurSectionParamsCount.ToString(), StringComparison.Ordinal);
}
// Escape #r (Return Value)
if (str.IndexOf("#r", StringComparison.Ordinal) != -1)
{
str = StringHelper.ReplaceEx(str, "#r", s.SectionReturnValue, StringComparison.Ordinal);
}
// Escape #c (Loop Counter)
if (s.LoopRunning)
{
str = StringHelper.ReplaceEx(str, "#c", s.LoopCounter.ToString(), StringComparison.Ordinal);
}
return(str);
}
public static string Preprocess(EngineState s, string str, bool escapePercent = true)
{
return(Unescape(ExpandVariables(s, str), escapePercent));
}
/// <summary>
/// Expand #n and %Var% variables.
/// </summary>
/// <param name="s"></param>
/// <param name="str"></param>
/// <returns></returns>
public static string ExpandVariables(EngineState s, string str)
{
return(s.Variables.Expand(ExpandSectionParams(s, str)));
}