ParserDebugger.java

package org.identityconnectors.patternparser;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.Map;

public final class ParserDebugger {

    private ParserDebugger() {
    }

    public static void main(String[] args) {
        if (args.length != 2) {
            System.out.println("usage: ParserDebugger parserFile dataFile");
        }
        try {
            String parser = loadFromFile(args[0]);
            MapTransform transform = (MapTransform) Transform.newTransform(parser);
            transform.setDebug(true);
            String text = loadFromFile(args[1]);
            Map<String, Object> output = transform.transform(text);

            System.out.println("\nResults:");
            for (Map.Entry<String, Object> entry : output.entrySet()) {
                System.out
                        .println("    " + entry.getKey() + "=" + resultToString(entry.getValue()));
            }
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }

    private static String resultToString(Object result) {
        if (result.getClass().isArray()) {
            return Arrays.deepToString((Object[]) result);
        } else if (result == null) {
            return "<null>";
        } else {
            return result.toString();
        }

    }

    private static String loadFromFile(String fileName) throws IOException {
        BufferedReader is =
                new BufferedReader(new InputStreamReader(new FileInputStream(fileName)));
        StringBuffer data = new StringBuffer();
        String line = null;
        while ((line = is.readLine()) != null) {
            data.append(line + "\n");
        }
        return data.toString();
    }
}