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/*
* libbrlapi - A library providing access to braille terminals for applications.
*
* Copyright (C) 2006-2025 by
* Samuel Thibault <Samuel.Thibault@ens-lyon.org>
* Sébastien Hinderer <Sebastien.Hinderer@ens-lyon.org>
*
* libbrlapi comes with ABSOLUTELY NO WARRANTY.
*
* This is free software, placed under the terms of the
* GNU Lesser General Public License, as published by the Free Software
* Foundation; either version 2.1 of the License, or (at your option) any
* later version. Please see the file LICENSE-LGPL for details.
*
* Web Page: http://brltty.app/
*
* This software is maintained by Dave Mielke <dave@mielke.cc>.
*/
package org.a11y.brlapi.clients;
import org.a11y.brlapi.*;
public class ListParametersClient extends Client {
public ListParametersClient (String... arguments) {
super(arguments);
addOptionalParameters("parameter", "subparam");
}
private String parameterName = null;
private Long subparamValue = null;
@Override
protected void processParameters (String[] parameters)
throws SyntaxException
{
int count = parameters.length;
int index = 0;
if (index == count) return;
parameterName = parameters[index++];
if (index == count) return;
subparamValue = Parse.asLong("subparam", parameters[index++]);
if (index < count) throw new TooManyParametersException(parameters, index);
}
@Override
protected final void runClient (Connection connection) throws SemanticException {
if (parameterName == null) {
Parameter[] parameterArray = connection.getParameters().get();
Parameters.sortByName(parameterArray);
for (Parameter parameter : parameterArray) {
if (parameter.isHidable()) continue;
if (parameter.hasSubparam()) continue;
String value = parameter.toString();
if (value != null) printf("%s: %s\n", parameter.getLabel(), value);
}
} else {
Parameter parameter = getParameter(connection, parameterName);
String value;
if (subparamValue == null) {
if (parameter.hasSubparam()) {
throw new SemanticException("subparam not specified: %s", parameter.getName());
}
value = parameter.toString();
} else {
if (!parameter.hasSubparam()) {
throw new SemanticException("has no subparam: %s", parameter.getName());
}
long subparam = subparamValue;
value = parameter.toString(subparam);
}
if (value == null) {
StringBuilder message = new StringBuilder();
message.append("parameter has no value");
message.append(": ");
message.append(parameter.getName());
if (subparamValue != null) {
message.append('[');
message.append(subparamValue);
message.append(']');
}
throw new SemanticException("%s", message);
}
printf("%s\n", value);
}
}
}
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