joptsimple.util.PathConverter Maven / Gradle / Ivy
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 {
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 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 );
}
}