com.codename1.util.regex.CharacterArrayCharacterIterator Maven / Gradle / Ivy
/*
* 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 com.codename1.util.regex;
/**
* Encapsulates char[] as CharacterIterator
*
* @author Ales Novak
* @version CVS $Id: CharacterArrayCharacterIterator.java 518156 2007-03-14 14:31:26Z vgritsenko $
*/
public final class CharacterArrayCharacterIterator implements CharacterIterator
{
/** encapsulated */
private final char[] src;
/** offset in the char array */
private final int off;
/** used portion of the array */
private final int len;
/** @param src - encapsulated String */
public CharacterArrayCharacterIterator(char[] src, int off, int len)
{
this.src = src;
this.off = off;
this.len = len;
}
/** @return a substring */
public String substring(int beginIndex, int endIndex)
{
if (endIndex > len) {
throw new IndexOutOfBoundsException("endIndex=" + endIndex
+ "; sequence size=" + len);
}
if (beginIndex < 0 || beginIndex > endIndex) {
throw new IndexOutOfBoundsException("beginIndex=" + beginIndex
+ "; endIndex=" + endIndex);
}
return new String(src, off + beginIndex, endIndex - beginIndex);
}
/** @return a substring */
public String substring(int beginIndex)
{
return substring(beginIndex, len);
}
/** @return a character at the specified position. */
public char charAt(int pos)
{
return src[off + pos];
}
/** @return true iff if the specified index is after the end of the character stream */
public boolean isEnd(int pos)
{
return (pos >= len);
}
}