/*
* Copyright (c) 2009 Mozilla Foundation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
package org.whattf.datatype;
import org.relaxng.datatype.DatatypeException;
import java.util.Arrays;
import com.ibm.icu.lang.UCharacter;
public class KeyLabelList extends AbstractDatatype {
/**
* The singleton instance.
*/
public static final KeyLabelList THE_INSTANCE = new KeyLabelList();
private KeyLabelList() {
super();
}
@Override
public void checkValid(CharSequence literal) throws DatatypeException {
String[] keylabels = literal.toString().split("\\s+");
Arrays.sort(keylabels);
for (int i = 0; i < keylabels.length; i++) {
String label = keylabels[i];
if (i > 0 && label.equals(keylabels[i-1])) {
throw newDatatypeException(
"Duplicate key label. Each key label must be unique.");
}
if (label.length() == 2) {
char[] chars = label.toCharArray();
if (!(UCharacter.isHighSurrogate(chars[0])
&& UCharacter.isLowSurrogate(chars[1]))) {
throw newDatatypeException(
"Key label has multiple characters. Each key label must be a single character.");
}
}
if (label.length() > 2) {
throw newDatatypeException(
"Key label has multiple characters. Each key label must be a single character.");
}
}
}
@Override
public String getName() {
return "key label list";
}
}