/*
* 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.
*
*/
/**
* Various string manipulation methods that are more efficient then chaining
* string operations: all is done in the same buffer without creating a bunch of
* string objects.
*
* @author <a href="mailto:[email protected]">Dungeon Project</a>
*/ public class Main { private static final int UTF8_MULTI_BYTES_MASK = 0x0080;
private static final int UTF8_TWO_BYTES_MASK = 0x00E0;
private static final int UTF8_TWO_BYTES = 0x00C0;
private static final int UTF8_THREE_BYTES_MASK = 0x00F0;
private static final int UTF8_THREE_BYTES = 0x00E0;
private static final int UTF8_FOUR_BYTES_MASK = 0x00F8;
private static final int UTF8_FOUR_BYTES = 0x00F0;
private static final int UTF8_FIVE_BYTES_MASK = 0x00FC;
private static final int UTF8_FIVE_BYTES = 0x00F8;
private static final int UTF8_SIX_BYTES_MASK = 0x00FE;
private static final int UTF8_SIX_BYTES = 0x00FC;
/**
* Return the Unicode char which is coded in the bytes at position 0.
*
* @param bytes
* The byte[] represntation of an Unicode string.
* @return The first char found.
*/ public static final char bytesToChar( byte[] bytes )
{ return bytesToChar( bytes, 0 );
}
/**
* Return the Unicode char which is coded in the bytes at the given
* position.
*
* @param bytes
* The byte[] represntation of an Unicode string.
* @param pos
* The current position to start decoding the char
* @return The decoded char, or -1 if no char can be decoded TODO : Should
* stop after the third byte, as a char is only 2 bytes long.
*/ public static final char bytesToChar( byte[] bytes, int pos )
{ if ( bytes == null )
{ return ( char ) -1;
}
