br.ime.usp.aztec.AZTECMain.java Source code

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Here is the source code for br.ime.usp.aztec.AZTECMain.java

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/*
Copyright 2012 Luiz Fernando Oliveira Corte Real
    
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
    
http://www.apache.org/licenses/LICENSE-2.0
    
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
 */
package br.ime.usp.aztec;

import java.io.IOException;

import org.apache.commons.cli.ParseException;

import br.ime.usp.aztec.io.PleaseHelpMeException;
import br.ime.usp.aztec.io.ReadOnlyOutputException;

/**
 * Entry point for the AZTEC algorithm encoder
 * 
 * @author Luiz Fernando Oliveira Corte Real
 */
public final class AZTECMain implements AlgorithmMain {

    @Override
    public void run(String[] args) throws IOException {
        AZTECCommandLineParametersParser parser = new AZTECCommandLineParametersParser();
        try {
            AZTECParameters params = parser.parse(args);
            if (params.isDecoding()) {
                new Decoder().decode(params.getInput(), params.getOutput());
            } else {
                new AZTEC().encode(params);
            }
            params.getOutput().close();
        } catch (PleaseHelpMeException e) {
            parser.printHelp();
        } catch (ParseException e) {
            parser.printHelp();
            System.exit(1);
        } catch (IllegalArgumentException e) {
            this.handleIOError(e);
        } catch (ReadOnlyOutputException e) {
            this.handleIOError(e);
        }
    }

    private void handleIOError(RuntimeException e) {
        System.err.println(e.getMessage());
        System.exit(2);
    }

}