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- /* ====================================================================
- Licensed to the Apache Software Foundation (ASF) under one or more
- contributor license agreements. See the NOTICE file distributed with
- this work for additional information regarding copyright ownership.
- The ASF licenses this file to You 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.apache.poi.util;
-
- import java.util.Iterator;
- import java.util.NoSuchElementException;
-
- // based on https://gist.github.com/EmmanuelOga/48df70b27ead4d80234b
- @Internal
- public class StringCodepointsIterable implements Iterable<String> {
- private class StringCodepointsIterator implements Iterator<String> {
- private int index = 0;
-
- @Override
- public void remove() {
- throw new UnsupportedOperationException();
- }
-
- @Override
- public boolean hasNext() {
- return index < StringCodepointsIterable.this.string.length();
- }
-
- @Override
- public String next() {
- if (!hasNext()) {
- throw new NoSuchElementException();
- }
- int codePoint = StringCodepointsIterable.this.string.codePointAt(index);
- index += Character.charCount(codePoint);
- return new String(Character.toChars(codePoint));
- }
- }
-
- private final String string;
-
- public StringCodepointsIterable(final String string) {
- this.string = string;
- }
-
- @Override
- public Iterator<String> iterator() {
- return new StringCodepointsIterator();
- }
- }
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