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package org.scijava.text.io;

import java.io.IOException;

import org.scijava.Priority;
import org.scijava.io.AbstractIOPlugin;
import org.scijava.io.IOPlugin;
import org.scijava.io.location.FileLocation;
import org.scijava.io.location.Location;
import org.scijava.plugin.Parameter;
import org.scijava.plugin.Plugin;
import org.scijava.text.TextService;

/**
 * {@link IOPlugin} for text conversion to HTML.
 * 
 * @author Curtis Rueden
 * @see TextService
 */
@Plugin(type = IOPlugin.class, priority = Priority.LOW - 1)
public class TextIOPlugin extends AbstractIOPlugin<String> {

	@Parameter(required = false)
	private TextService textService;

	// -- IOPlugin methods --

	@Override
	public Class<String> getDataType() {
		return String.class;
	}

	@Override
	public boolean supportsOpen(final Location source) {
		if (textService == null) return false; // no service for opening text files
		if (!(source instanceof FileLocation)) return false;
		final FileLocation loc = (FileLocation) source;
		return textService.supports(loc.getFile());
	}

	@Override
	public String open(final Location source) throws IOException {
		if (textService == null) return null; // no service for opening text files
		if (!(source instanceof FileLocation)) throw new IllegalArgumentException();
		final FileLocation loc = (FileLocation) source;
		return textService.asHTML(loc.getFile());
	}

}
