org.bndly.code.common.StringUtil Maven / Gradle / Ivy
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package org.bndly.code.common;
/*-
* #%L
* Code Common
* %%
* Copyright (C) 2013 - 2020 Cybercon GmbH
* %%
* 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.
* #L%
*/
import java.util.ArrayList;
import java.util.List;
public final class StringUtil {
private StringUtil() {
}
public static List extractPathElements(String path) {
List elements = new ArrayList<>();
int li = -1;
int i = path.indexOf(".");
if (i > -1) {
while (i > -1) {
elements.add(path.substring(li + 1, i));
li = i;
i = path.indexOf(".", i + 1);
}
if (li + 1 < path.length() - 1) {
elements.add(path.substring(li + 1));
}
} else {
elements.add(path);
}
return elements;
}
public static List extractFragments(String pathExpression) {
List fragments = new ArrayList<>();
int s = pathExpression.indexOf("{");
int e = pathExpression.indexOf("}");
if (s > -1 && e > -1 && s < e) {
while (s > -1 && e > -1 && s < e) {
if (s > 0 && fragments.isEmpty()) {
fragments.add(pathExpression.substring(0, s));
}
String element = pathExpression.substring(s, e + 1);
fragments.add(element);
int ns = pathExpression.indexOf("{", e);
int ne = pathExpression.indexOf("}", e + 1);
if (ne == -1 || ns == -1) {
if (e < pathExpression.length() - 1) {
fragments.add(pathExpression.substring(e + 1));
}
} else {
if (ns - (e + 1) > 0) {
fragments.add(pathExpression.substring(e + 1, ns));
}
}
s = ns;
e = ne;
}
} else {
fragments.add(pathExpression);
}
return fragments;
}
}