/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.commons.cli.avalon;
import java.util.Arrays;
/**
* Basic class describing an instance of option.
*
*/
public final class CLOption {
/**
* Value of {@link CLOptionDescriptor#getId} when the option is a text argument.
*/
public static final int TEXT_ARGUMENT = 0;
/**
* Default descriptor. Required, since code assumes that getDescriptor will
* never return null.
*/
private static final CLOptionDescriptor TEXT_ARGUMENT_DESCRIPTOR = new CLOptionDescriptor(null,
CLOptionDescriptor.ARGUMENT_OPTIONAL, TEXT_ARGUMENT, null);
private String[] arguments;
private CLOptionDescriptor descriptor = TEXT_ARGUMENT_DESCRIPTOR;
/**
* Retrieve argument to option if it takes arguments.
*
* @return the (first) argument
*/
public final String getArgument() {
return getArgument(0);
}
/**
* Retrieve indexed argument to option if it takes arguments.
*
* @param index
* The argument index, from 0 to {@link #getArgumentCount()}-1.
* @return the argument
*/
public final String getArgument(final int index) {
if (null == this.arguments || index < 0 || index >= this.arguments.length) {
return null;
} else {
return this.arguments[index];
}
}
public final CLOptionDescriptor getDescriptor() {
return this.descriptor;
}
/**
* Constructor taking an descriptor
*
* @param descriptor
* the descriptor iff null, will default to a "text argument"
* descriptor.
*/
public CLOption(final CLOptionDescriptor descriptor) {
if (descriptor != null) {
this.descriptor = descriptor;
}
}
/**
* Constructor taking argument for option.
*
* @param argument
* the argument
*/
public CLOption(final String argument) {
this((CLOptionDescriptor) null);
addArgument(argument);
}
/**
* Mutator of Argument property.
*
* @param argument
* the argument
*/
public final void addArgument(final String argument) {
if (null == this.arguments) {
this.arguments = new String[] { argument };
} else {
final String[] arguments = new String[this.arguments.length + 1];
System.arraycopy(this.arguments, 0, arguments, 0, this.arguments.length);
arguments[this.arguments.length] = argument;
this.arguments = arguments;
}
}
/**
* Get number of arguments.
*
* @return the number of arguments
*/
public final int getArgumentCount() {
if (null == this.arguments) {
return 0;
} else {
return this.arguments.length;
}
}
/**
* Convert to String.
*
* @return the string value
*/
@Override
public final String toString() {
final StringBuilder sb = new StringBuilder();
sb.append("[");
final char id = (char) this.descriptor.getId();
if (id == TEXT_ARGUMENT) {
sb.append("TEXT ");
} else {
sb.append("Option ");
sb.append(id);
}
if (null != this.arguments) {
sb.append(", ");
sb.append(Arrays.asList(this.arguments));
}
sb.append(" ]");
return sb.toString();
}
/*
* Convert to a shorter String for test purposes
*
* @return the string value
*/
final String toShortString() {
final StringBuilder sb = new StringBuilder();
final char id = (char) this.descriptor.getId();
if (id != TEXT_ARGUMENT) {
sb.append("-");
sb.append(id);
}
if (null != this.arguments) {
if (id != TEXT_ARGUMENT) {
sb.append("=");
}
sb.append(Arrays.asList(this.arguments));
}
return sb.toString();
}
}