1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 /* $Id$ */ 19 20 package org.apache.fop.fo; 21 22 import java.util.NoSuchElementException; 23 24 /** 25 * Class providing an (FO flavored) char iterator for a string. 26 */ 27 public class StringCharIterator extends CharIterator { 28 29 private int index; 30 private String str; 31 32 /** 33 * Constructor 34 * @param s the character that this iterator should iterate. 35 */ StringCharIterator(String s)36 public StringCharIterator(String s) { 37 this.index = -1; 38 this.str = s; 39 } 40 41 /** 42 * @return true if there is another element in the collection over which to 43 * iterate (since this iterator only handles one character, this will return 44 * false if it is past that character). 45 */ hasNext()46 public boolean hasNext() { 47 return (index + 1) < str.length(); 48 } 49 50 /** 51 * @return the next character, if there is one (since there is only one 52 * character over which to iterate, it must be the first character). 53 * @throws NoSuchElementException if past the first character 54 */ nextChar()55 public char nextChar() throws NoSuchElementException { 56 if ((index + 1) < str.length()) { 57 return str.charAt(++index); 58 } else { 59 throw new NoSuchElementException(); 60 } 61 } 62 63 } 64 65