/*
* Copyright 2013 the original author or authors.
*
* 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 org.springframework.data.rest.core.support;
/**
* Helper methods aiming at handling String representations of resources.
*
* @author Florent Biville
*/
public class ResourceStringUtils {
/**
* Checks whether the given input contains actual text (slash excluded). This is a specializing variant of
* {@link org.springframework.util.StringUtils )}#hasText.
*
* @param input
*/
public static boolean hasTextExceptSlash(CharSequence input) {
int strLen = input.length();
for (int i = 0; i < strLen; i++) {
if (!Character.isWhitespace(input.charAt(i)) && !startsWithSlash(input.charAt(i))) {
return true;
}
}
return false;
}
/**
* Returns a string without the leading slash, if any.
*
* @param path
*/
public static String removeLeadingSlash(String path) {
if (path.length() == 0) {
return path;
}
boolean hasLeadingSlash = startsWithSlash(path);
if (path.length() == 1) {
return hasLeadingSlash ? "" : path;
}
return hasLeadingSlash ? path.substring(1) : path;
}
private static boolean startsWithSlash(String path) {
return path.charAt(0) == '/';
}
private static boolean startsWithSlash(char c) {
return c == '/';
}
}