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package eu.stamp.botsing.preprocessing;

import java.util.List;

public class ErrorMessage implements STProcessor {
	private final static String EXCEPTION_PREFIX = "Exception in thread";

	private static ErrorMessage instance = new ErrorMessage();

	public static ErrorMessage get() {
		return instance;
	}

	private ErrorMessage() {
	}

	@Override
	public List preprocess(List lines, String regexp) {
		if (lines.size() < 1) {
			return lines;
		}
		String head = lines.get(0);
        // remove thread info
		if (head.startsWith(EXCEPTION_PREFIX)) {
			head = head.replaceAll(EXCEPTION_PREFIX + " \".*\" ", "");
		}
		if (head.contains(":")) {
			head = head.replaceAll("\\:.*", "");
		}
		lines.set(0, head);
		return lines;
	}

}