/*
* Copyright 2017-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.rules.macros;
import com.facebook.buck.model.Either;
import com.google.common.base.Preconditions;
import com.google.common.base.Splitter;
import com.google.common.collect.ImmutableList;
import java.util.List;
public class StringWithMacrosUtils {
private StringWithMacrosUtils() {}
/** @return a {@link StringWithMacros} object built with the given format strings and macros. */
public static StringWithMacros format(String format, Macro... macros) {
ImmutableList.Builder<Either<String, Macro>> partsBuilder = ImmutableList.builder();
List<String> stringParts = Splitter.on("%s").splitToList(format);
Preconditions.checkState(stringParts.size() == macros.length + 1);
if (!stringParts.get(0).isEmpty()) {
partsBuilder.add(Either.ofLeft(stringParts.get(0)));
}
for (int i = 0; i < macros.length; i++) {
partsBuilder.add(Either.ofRight(macros[i]));
if (!stringParts.get(i + 1).isEmpty()) {
partsBuilder.add(Either.ofLeft(stringParts.get(i + 1)));
}
}
return StringWithMacros.of(partsBuilder.build());
}
}