com.aspectran.shell.command.option.MissingOptionException Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2023 The Aspectran Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.aspectran.shell.command.option;
import java.util.Iterator;
import java.util.List;
/**
* Thrown when a required option has not been provided.
*/
public class MissingOptionException extends OptionParserException {
/** @serial */
private static final long serialVersionUID = -3648528884089184961L;
/** The list of missing options and groups */
private List missingOptions;
/**
* Construct a new {@code MissingSelectedException}
* with the specified detail message.
*
* @param message the detail message
*/
public MissingOptionException(String message) {
super(message);
}
/**
* Constructs a new {@code MissingSelectedException} with the
* specified list of missing options.
*
* @param missingOptions the list of missing options and groups
*/
public MissingOptionException(List missingOptions) {
this(createMessage(missingOptions));
this.missingOptions = missingOptions;
}
/**
* Returns the list of options or option groups missing in the command line parsed.
*
* @return the missing options, consisting of String instances for simple
* options, and OptionGroup instances for required option groups.
*/
public List getMissingOptions() {
return missingOptions;
}
/**
* Build the exception message from the specified list of options.
*
* @param missingOptions the list of missing options and groups
*/
private static String createMessage(final List missingOptions) {
StringBuilder buf = new StringBuilder("Missing required option");
buf.append(missingOptions.size() == 1 ? "" : "s");
buf.append(": ");
Iterator it = missingOptions.iterator();
while (it.hasNext()) {
buf.append(it.next());
if (it.hasNext()) {
buf.append(", ");
}
}
return buf.toString();
}
}