repacked.com.google.common.base.Joiner Maven / Gradle / Ivy
/**
* Copyright © 2013 Sven Ruppert ([email protected])
*
* 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 repacked.com.google.common.base;
import java.io.IOException;
import java.util.Iterator;
import static com.google.gson.internal.$Gson$Preconditions.checkNotNull;
/**
* Copyright (C) 2010 RapidPM
* 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.
*
* Created by RapidPM - Team on 18.09.16.
*/
public class Joiner {
private final String separator;
private Joiner(String separator) {
this.separator = checkNotNull(separator);
}
public static Joiner on(String separator) {
return new Joiner(separator);
}
public static Joiner on(char separator) {
return new Joiner(String.valueOf(separator));
}
public String join(final Iterable valuesToJoin) {
return join(valuesToJoin.iterator());
}
public final String join(Iterator valuesToJoin) {
return appendTo(new StringBuilder() , valuesToJoin).toString();
}
public final StringBuilder appendTo(StringBuilder builder , Iterator valuesToJoin) {
try {
appendTo((Appendable) builder , valuesToJoin);
} catch (IOException impossible) {
throw new AssertionError(impossible);
}
return builder;
}
public A appendTo(A appendable , Iterator parts) throws IOException {
checkNotNull(appendable);
if (parts.hasNext()) {
appendable.append(toString(parts.next()));
while (parts.hasNext()) {
appendable.append(separator);
appendable.append(toString(parts.next()));
}
}
return appendable;
}
CharSequence toString(Object part) {
checkNotNull(part); // checkNotNull for GWT (do not optimize).
return (part instanceof CharSequence) ? (CharSequence) part : part.toString();
}
}