/*
* Copyright 2014-present Facebook, Inc.
*
* 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.facebook.buck.model;
import com.facebook.buck.log.Logger;
import com.google.common.base.Splitter;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Iterables;
import java.util.Set;
import java.util.concurrent.ConcurrentSkipListSet;
/** Parses a string containing one or more flavor names. */
public class FlavorParser {
private static final Logger LOG = Logger.get(FlavorParser.class);
private static final ImmutableMap<String, String> DEPRECATED_FLAVORS =
ImmutableMap.of("dynamic", "shared");
private final Set<String> deprecatedFlavorWarningShown = new ConcurrentSkipListSet<>();
/**
* Given a comma-separated string of flavors, returns an iterable containing the separated names
* of the flavors inside.
*
* <p>Also maps deprecated flavor names to their supported names.
*/
public Iterable<String> parseFlavorString(String flavorString) {
return Iterables.transform(
Splitter.on(",").omitEmptyStrings().trimResults().split(flavorString),
flavor -> {
String mapped = DEPRECATED_FLAVORS.get(flavor);
if (mapped != null) {
// Show a warning the first time a deprecated flavor is used.
if (deprecatedFlavorWarningShown.add(flavor)) {
LOG.warn("Flavor %s is deprecated; use %s instead.", flavor, mapped);
}
return mapped;
} else {
return flavor;
}
});
}
}