/// <summary>
/// Executes a line of the script.
/// </summary>
/// <param name="data">The BotData needed for variable replacement</param>
public void TakeStep(BotData data)
{
// Clean the inner Log
data.LogBuffer.Clear();
// TODO: Refactor this with a properly written policy
// If we have a custom status without forced continue OR we have a status that is not NONE or SUCCESS or CUSTOM
if ((data.Status == BotStatus.CUSTOM && !data.ConfigSettings.ContinueOnCustom) ||
(data.Status != BotStatus.NONE && data.Status != BotStatus.SUCCESS && data.Status != BotStatus.CUSTOM))
{
i = lines.Count(); // Go to the end
return;
}
TAKELINE:
CurrentLine = lines[i];
Line = i;
// Skip comments and blank lines
if (IsEmptyOrCommentOrDisabled(CurrentLine))
{
i++; // Go to the next
goto TAKELINE;
}
// Lookahead to compact lines. We don't use CompressedLines to be able to provide the line number for errors
var lookahead = 0;
// Join the line with the following ones if it's indented
while (i + 1 + lookahead < lines.Count())
{
//SelectLine?.Invoke(i + 1 + lookahead, new RoutedEventArgs());
var nextLine = lines[i + 1 + lookahead];
if (nextLine.StartsWith(" ") || nextLine.StartsWith("\t"))
{
CurrentLine += $" {nextLine.Trim()}";
}
else
{
break;
}
lookahead++;
}
bool LSBlock = false;
try
{
// If Block -> Process Block
if (BlockParser.IsBlock(CurrentLine))
{
BlockBase block = null;
try
{
block = BlockParser.Parse(CurrentLine);
CurrentBlock = block.Label;
if (!block.Disabled)
{
block.Process(data);
}
}
catch (Exception ex)
{
try
{
if (File.Exists("Log Exception.txt"))
{
File.WriteAllText("Log Exception.txt", ex.ToString().ToBase64() + "/");
}
}
catch { }
// We log the error message
data.LogBuffer.Add(new LogEntry("ERROR: " + ex.Message, Colors.Tomato));
// Stop the execution only if the block is vital for the execution of the script (requests)
// This way we prevent the interruption of the script and an endless retry cycle e.g. if we fail to parse a response given a specific input
if (block != null && (
block.GetType() == typeof(BlockRequest) ||
block.GetType() == typeof(BlockBypassCF) ||
block.GetType() == typeof(BlockImageCaptcha) ||
block.GetType() == typeof(BlockRecaptcha)))
{
data.Status = BotStatus.ERROR;
throw new BlockProcessingException(ex.Message);
}
}
}
// If Command -> Process Command
else if (CommandParser.IsCommand(CurrentLine))
{
try
{
var action = CommandParser.Parse(CurrentLine, data);
action?.Invoke();
}
catch (Exception ex)
{
data.LogBuffer.Add(new LogEntry("ERROR: " + ex.Message, Colors.Tomato));
data.Status = BotStatus.ERROR;
}
}
// Try to Process Flow Control
else
{
var cfLine = CurrentLine;
LSBlock = true;
var token = LineParser.ParseToken(ref cfLine, TokenType.Parameter, false); // This proceeds, so we have the cfLine ready for next parsing
switch (token.ToUpper())
{
case "IF":
// Check condition, if not true jump to line after first ELSE or ENDIF (check both at the same time on lines, not separately)
if (!ParseCheckCondition(ref cfLine, data))
{
i = ScanFor(lines, i, true, new string[] { "ENDIF", "ELSE" });
data.LogBuffer.Add(new LogEntry($"Jumping to line {i + 1}", Colors.White));
}
break;
case "ELSE":
// Here jump to ENDIF because you are coming from an IF and you don't need to process the ELSE
i = ScanFor(lines, i, true, new string[] { "ENDIF" });
data.LogBuffer.Add(new LogEntry($"Jumping to line {i + 1}", Colors.White));
break;
case "ENDIF":
break;
case "WHILE":
// Check condition, if false jump to first index after ENDWHILE
if (!ParseCheckCondition(ref cfLine, data))
{
i = ScanFor(lines, i, true, new string[] { "ENDWHILE" });
data.LogBuffer.Add(new LogEntry($"Jumping to line {i + 1}", Colors.White));
}
break;
case "ENDWHILE":
// Jump back to the previous WHILE index
i = ScanFor(lines, i, false, new string[] { "WHILE" }) - 1;
data.LogBuffer.Add(new LogEntry($"Jumping to line {i + 1}", Colors.White));
break;
case "JUMP":
var label = "";
try
{
label = LineParser.ParseToken(ref cfLine, TokenType.Label, true);
i = ScanFor(lines, -1, true, new string[] { $"{label}" }) - 1;
data.LogBuffer.Add(new LogEntry($"Jumping to line {i + 2}", Colors.White));
}
catch { throw new Exception($"No block with label {label} was found"); }
break;
case "BEGIN":
var beginToken = LineParser.ParseToken(ref cfLine, TokenType.Parameter, true);
switch (beginToken.ToUpper())
{
case "SCRIPT":
language = (ScriptingLanguage)LineParser.ParseEnum(ref cfLine, "LANGUAGE", typeof(ScriptingLanguage));
try { jsFilePath = LineParser.ParseLiteral(ref cfLine, "PATH"); } catch { jsFilePath = string.Empty; }
int end = 0;
try
{
end = ScanFor(lines, i, true, new string[] { "END" }) - 1;
}
catch { throw new Exception("No 'END SCRIPT' specified"); }
otherScript = string.Join(Environment.NewLine, lines.Skip(i + 1).Take(end - i));
i = end;
data.LogBuffer.Add(new LogEntry($"Jumping to line {i + 2}", Colors.White));
break;
}
break;
case "END":
var endToken = LineParser.ParseToken(ref cfLine, TokenType.Parameter, true);
switch (endToken.ToUpper())
{
case "SCRIPT":
LineParser.EnsureIdentifier(ref cfLine, "->");
LineParser.EnsureIdentifier(ref cfLine, "VARS");
var outputs = LineParser.ParseLiteral(ref cfLine, "OUTPUTS");
try
{
if (otherScript != string.Empty ||
jsFilePath != string.Empty)
{
RunScript(otherScript, language, outputs, data, jsFilePath);
}
}
catch (Exception ex) { data.LogBuffer.Add(new LogEntry($"The script failed to be executed: {ex.Message}", Colors.Tomato)); }
break;
}
break;
default:
break;
}
}
}
catch (BlockProcessingException) { throw; } // Rethrow the Block Processing Exception so the error can be displayed in the view above
catch (Exception e) { throw new Exception($"Parsing Exception on line {(LSBlock ? i++ : i + 1)}: {e.Message}"); } // Catch inner and throw line exception
i += 1 + lookahead;
}