package fixjava;

public class StringUtils {

	/** Repeat the given string the requested number of times. */
	public static String repeat(String str, int numTimes) {
		StringBuilder buf = new StringBuilder(Math.max(0, str.length() * numTimes));
		for (int i = 0; i < numTimes; i++)
			buf.append(str);
		return buf.toString();
	}

	/**
	 * Pad the left hand side of a field with the given character. Always adds at least one pad character. If the length of str is
	 * greater than numPlaces-1, then the output string will be longer than numPlaces.
	 */
	public static String padLeft(String str, char padChar, int numPlaces) {
		int bufSize = Math.max(numPlaces, str.length() + 1);
		StringBuilder buf = new StringBuilder(Math.max(numPlaces, str.length() + 1));
		buf.append(padChar);
		for (int i = 1, mi = bufSize - str.length(); i < mi; i++)
			buf.append(padChar);
		buf.append(str);
		return buf.toString();
	}

	/**
	 * Pad the right hand side of a field with the given character. Always adds at least one pad character. If the length of str is
	 * greater than numPlaces-1, then the output string will be longer than numPlaces.
	 */
	public static String padRight(String str, char padChar, int numPlaces) {
		int bufSize = Math.max(numPlaces, str.length() + 1);
		StringBuilder buf = new StringBuilder(Math.max(numPlaces, str.length() + 1));
		buf.append(str);
		buf.append(padChar);
		while (buf.length() < bufSize)
			buf.append(padChar);
		return buf.toString();
	}

	/** Intern all strings in an array, skipping null elements. */
	public static String[] intern(String[] arr) {
		for (int i = 0; i < arr.length; i++)
			arr[i] = arr[i].intern();
		return arr;
	}

	/** Intern a string, ignoring null */
	public static String intern(String str) {
		return str == null ? null : str.intern();
	}

}

package be.mokarea.gcj.common;

import java.io.FileWriter;
import java.io.PrintWriter;
import java.io.Writer;


public abstract class GoogleCodeJamBase<T extends TestCase> {
	protected abstract Transformation<T> createTransformation(TestCaseReader<T> testCaseReader, PrintWriter outputWriter) throws Exception;
	protected abstract String getOutputFileName() throws Exception;
	protected abstract TestCaseReader<T> getTestCaseReader() throws Exception;
	
	public void execute() {
		try {
			PrintWriter outputWriter = null;
			try {
				outputWriter = new PrintWriter(new FileWriter(getOutputFileName()));
				Transformation<T> transformation = createTransformation(getTestCaseReader(),outputWriter);
				transformation.transformAll();
				outputWriter.flush();
			} finally {
				closeQuietly(outputWriter);
			}
		} catch (Throwable t) {
			t.printStackTrace();
		}
	}
	
	private void closeQuietly(Writer outputWriter) {
		if (outputWriter != null) {
			try {
				outputWriter.close();
			} catch (Throwable t) {
				t.printStackTrace();
			}
		}
	}
}
