org.kohsuke.args4j.FImageOptionHandler Maven / Gradle / Ivy

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package org.kohsuke.args4j;

import java.io.File;
import java.io.IOException;

import org.kohsuke.args4j.spi.OptionHandler;
import org.kohsuke.args4j.spi.Parameters;
import org.kohsuke.args4j.spi.Setter;
import org.openimaj.image.FImage;
import org.openimaj.image.ImageUtilities;


/**
 * An {@link OptionHandler} that can provide a {@link FImage} from
 * a file name.
 * 
 * @author Jonathon Hare ([email protected])
 */
public class FImageOptionHandler extends OptionHandler {
	/**
	 * Default constructor.
	 * @param parser the parser
	 * @param option the option definition
	 * @param setter the setter
	 */
	public FImageOptionHandler(CmdLineParser parser, OptionDef option, Setter setter) {
		super(parser, option, setter);
	}

	@Override
	public String getDefaultMetaVariable() {
		return "imageFile";
	}

	@Override
	public int parseArguments(Parameters params) throws CmdLineException {
		File file = new File(params.getParameter(0));
		try {
			setter.addValue(ImageUtilities.readF(file));
		} catch (IOException e) {
			throw new CmdLineException(owner, "Error opening image file " + file, e);
		}
		
		return 1;
	}
}