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The official Couchbase JVM Core IO Library
/*
* Copyright 2019 Couchbase, 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.couchbase.client.core.util;
import com.couchbase.client.core.annotation.Stability;
@Stability.Internal
public class CbStrings {
private CbStrings() {
throw new AssertionError("not instantiable");
}
public static final String MIN_CODE_POINT_AS_STRING = codePointToString(Character.MIN_CODE_POINT);
public static final String MAX_CODE_POINT_AS_STRING = codePointToString(Character.MAX_CODE_POINT);
/**
* Backport of Java 11's {@code Character.toString(int codePoint)}.
*/
public static String codePointToString(int codePoint) {
return new String(Character.toChars(codePoint));
}
public static String nullToEmpty(String s) {
return s == null ? "" : s;
}
public static String emptyToNull(String s) {
return isNullOrEmpty(s) ? null : s;
}
public static boolean isNullOrEmpty(String s) {
return s == null || s.isEmpty();
}
public static String removeStart(String s, String removeMe) {
if (s == null || removeMe == null) {
return s;
}
return s.startsWith(removeMe) ? s.substring(removeMe.length()) : s;
}
public static String removeEnd(String s, String removeMe) {
if (s == null || removeMe == null) {
return s;
}
return s.endsWith(removeMe) ? s.substring(0, s.length() - removeMe.length()) : s;
}
}