org.springframework.core.env.CommandLineArgs Maven / Gradle / Ivy
/*
* Copyright 2002-2016 the original author or authors.
*
* 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
*
* https://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.springframework.core.env;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.springframework.lang.Nullable;
/**
* A simple representation of command line arguments, broken into "option arguments" and
* "non-option arguments".
*
* @author Chris Beams
* @since 3.1
* @see SimpleCommandLineArgsParser
*/
class CommandLineArgs {
private final Map> optionArgs = new HashMap<>();
private final List nonOptionArgs = new ArrayList<>();
/**
* Add an option argument for the given option name and add the given value to the
* list of values associated with this option (of which there may be zero or more).
* The given value may be {@code null}, indicating that the option was specified
* without an associated value (e.g. "--foo" vs. "--foo=bar").
*/
public void addOptionArg(String optionName, @Nullable String optionValue) {
if (!this.optionArgs.containsKey(optionName)) {
this.optionArgs.put(optionName, new ArrayList<>());
}
if (optionValue != null) {
this.optionArgs.get(optionName).add(optionValue);
}
}
/**
* Return the set of all option arguments present on the command line.
*/
public Set getOptionNames() {
return Collections.unmodifiableSet(this.optionArgs.keySet());
}
/**
* Return whether the option with the given name was present on the command line.
*/
public boolean containsOption(String optionName) {
return this.optionArgs.containsKey(optionName);
}
/**
* Return the list of values associated with the given option. {@code null} signifies
* that the option was not present; empty list signifies that no values were associated
* with this option.
*/
@Nullable
public List getOptionValues(String optionName) {
return this.optionArgs.get(optionName);
}
/**
* Add the given value to the list of non-option arguments.
*/
public void addNonOptionArg(String value) {
this.nonOptionArgs.add(value);
}
/**
* Return the list of non-option arguments specified on the command line.
*/
public List getNonOptionArgs() {
return Collections.unmodifiableList(this.nonOptionArgs);
}
}