BMPString.java

/*
 * 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 client.net.sf.saxon.ce.regex;

/**
 * Encapsulates String as CharacterIterator.
 * <p/>
 * Modified by Saxonica (MHK) to encapsulate any CharSequence, provided the CharSequence contains
 * no surrogate pairs.
 *
 * @author <a href="mailto:ales.novak@netbeans.com">Ales Novak</a>
 * @version CVS $Id: StringCharacterIterator.java 518156 2007-03-14 14:31:26Z vgritsenko $
 */
public final class BMPString implements UnicodeString {
    /**
     * encapsulated
     */
    private final CharSequence src;

    /**
     * @param src - encapsulated CharSequence.
     *            The client must ensure that this contains no surrogate pairs
     */
    public BMPString(CharSequence src) {
        this.src = src;
    }

    public UnicodeString substring(int beginIndex, int endIndex) {
        return new BMPString(src.subSequence(beginIndex, endIndex));
    }

    public int charAt(int pos) {
        return src.charAt(pos);
    }

    public int indexOf(int search, int pos) {
        if (search > 65535) {
            return -1;
        } else {
            for (int i=pos; i<src.length(); i++) {
                if (src.charAt(i) == (char)search) {
                    return i;
                }
            }
            return -1;
        }
    }

    public int length() {
        return src.length();
    }

    public boolean isEnd(int pos) {
        return (pos >= src.length());
    }

    public String toString() {
        return src.toString();
    }

    public CharSequence getCharSequence() {
        return src;
    }
}

// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. 
// If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
// This Source Code Form is “Incompatible With Secondary Licenses”, as defined by the Mozilla Public License, v. 2.0.