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package jdk.internal.joptsimple.util;

import java.nio.file.Path;
import java.nio.file.Paths;
import java.text.MessageFormat;
import java.util.ResourceBundle;

import jdk.internal.joptsimple.ValueConversionException;
import jdk.internal.joptsimple.ValueConverter;

Converts command line options to Path objects and checks the status of the underlying file.
/** * Converts command line options to {@link Path} objects and checks the status of the underlying file. */
public class PathConverter implements ValueConverter<Path> { private final PathProperties[] pathProperties; public PathConverter( PathProperties... pathProperties ) { this.pathProperties = pathProperties; } @Override public Path convert( String value ) { Path path = Paths.get(value); if ( pathProperties != null ) { for ( PathProperties each : pathProperties ) { if ( !each.accept( path ) ) throw new ValueConversionException( message( each.getMessageKey(), path.toString() ) ); } } return path; } @Override public Class<Path> valueType() { return Path.class; } @Override public String valuePattern() { return null; } private String message( String errorKey, String value ) { ResourceBundle bundle = ResourceBundle.getBundle( "jdk.internal.joptsimple.ExceptionMessages" ); Object[] arguments = new Object[] { value, valuePattern() }; String template = bundle.getString( PathConverter.class.getName() + "." + errorKey + ".message" ); return new MessageFormat( template ).format( arguments ); } }