001    /*
002     * Copyright (c) 2006 Henri Sivonen
003     *
004     * Permission is hereby granted, free of charge, to any person obtaining a 
005     * copy of this software and associated documentation files (the "Software"), 
006     * to deal in the Software without restriction, including without limitation 
007     * the rights to use, copy, modify, merge, publish, distribute, sublicense, 
008     * and/or sell copies of the Software, and to permit persons to whom the 
009     * Software is furnished to do so, subject to the following conditions:
010     *
011     * The above copyright notice and this permission notice shall be included in 
012     * all copies or substantial portions of the Software.
013     *
014     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
015     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
016     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 
017     * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
018     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 
019     * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
020     * DEALINGS IN THE SOFTWARE.
021     */
022    
023    package org.whattf.datatype;
024    
025    import org.relaxng.datatype.Datatype;
026    import org.relaxng.datatype.DatatypeException;
027    
028    /**
029     * This datatype shall accept any string that consists of one or more characters 
030     * and does not contain any whitespace characters.
031     * <p>The ID-type of this datatype is ID.
032     * @version $Id: Id.java,v 1.4 2006/11/18 11:51:44 hsivonen Exp $
033     * @author hsivonen
034     */
035    public class Id extends AbstractDatatype {
036    
037        /**
038         * The singleton instance.
039         */
040        public static final Id THE_INSTANCE = new Id();
041    
042        /**
043         * Package-private constructor
044         */
045        protected Id() {
046            super();
047        }
048    
049        /**
050         * Checks that the value is a proper HTML5 id.
051         * @param literal the value
052         * @param context ignored
053         * @throws DatatypeException if the value isn't valid
054         * @see org.relaxng.datatype.Datatype#checkValid(java.lang.String, org.relaxng.datatype.ValidationContext)
055         */
056        public void checkValid(CharSequence literal)
057                throws DatatypeException {
058            int len = literal.length();
059            if (len == 0) {
060                throw new DatatypeException("An ID must not be the empty string.");
061            }
062            for (int i = 0; i < len; i++) {
063                char c = literal.charAt(i);
064                if (isWhitespace(c)) {
065                    throw new DatatypeException(i, "An ID must not contain whitespace.");
066                }
067            }
068        }
069    
070        /**
071         * Returns <code>Datatype.ID_TYPE_ID</code>.
072         * @return <code>Datatype.ID_TYPE_ID</code>
073         * @see org.relaxng.datatype.Datatype#getIdType()
074         */
075        public int getIdType() {
076            return Datatype.ID_TYPE_ID;
077        }
078    }