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OAuth 2.0 SDK with OpenID Connection extensions for developing
client and server applications.
/*
* oauth2-oidc-sdk
*
* Copyright 2012-2016, Connect2id Ltd and contributors.
*
* 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.nimbusds.oauth2.sdk.util;
/**
* String utilities. Replicates Apache Commons Lang 3.
*/
public final class StringUtils {
/**
* Returns {@code true} if the specified char sequence is all blank,
* empty or {@code null}.
*
* @param cs The char sequence. May be {@code null}.
*
* @return {@code true} if the specified char sequence is all blank,
* empty or {@code null}, else {@code false}.
*/
public static boolean isBlank(CharSequence cs) {
int strLen;
if (cs != null && (strLen = cs.length()) != 0) {
for(int i = 0; i < strLen; ++i) {
if (!Character.isWhitespace(cs.charAt(i))) {
return false;
}
}
return true;
} else {
return true;
}
}
/**
* Returns {@code true} if the specified char sequence is not all
* blank, not empty and not {@code null}.
*
* @param cs The char sequence. May be {@code null}.
*
* @return {@code true} if the specified char sequence is not all
* blank, not empty and not {@code null}, else {@code false}.
*/
public static boolean isNotBlank(CharSequence cs) {
return !isBlank(cs);
}
/**
* Prevents public instantiation.
*/
private StringUtils() {}
}