package uniqifierorig;

import java.io.FileReader;
import java.io.BufferedReader;
import java.lang.StringBuilder;

public class FileOpener {
    // Retuns null if it couldn't read the passed-in file.
    public static String ReadFileToString(String filename) {
        if (filename == null || filename.isEmpty())
            return "";

        try {
            BufferedReader reader = new BufferedReader(new FileReader(filename));
            StringBuilder sb = new StringBuilder();

            String line;
            while ((line = reader.readLine()) != null) {
                sb.append(line);
            }
            reader.close();

            return sb.toString();
        } catch (Exception e) {
            System.err.format("Exception occurred trying to read '%s'.", filename);
            e.printStackTrace();
            return null;
        }
    }
}