| package joptsimple.util; |
| |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.text.MessageFormat; |
| import java.util.ResourceBundle; |
| |
| import joptsimple.ValueConversionException; |
| import joptsimple.ValueConverter; |
| |
| /** |
| * 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( "joptsimple.ExceptionMessages" ); |
| Object[] arguments = new Object[] { value, valuePattern() }; |
| String template = bundle.getString( PathConverter.class.getName() + "." + errorKey + ".message" ); |
| return new MessageFormat( template ).format( arguments ); |
| } |
| } |