1 /* GYearMonthType.java --
2    Copyright (C) 2006  Free Software Foundation, Inc.
3 
4 This file is part of GNU Classpath.
5 
6 GNU Classpath is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
9 any later version.
10 
11 GNU Classpath is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 General Public License for more details.
15 
16 You should have received a copy of the GNU General Public License
17 along with GNU Classpath; see the file COPYING.  If not, write to the
18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19 02110-1301 USA.
20 
21 Linking this library statically or dynamically with other modules is
22 making a combined work based on this library.  Thus, the terms and
23 conditions of the GNU General Public License cover the whole
24 combination.
25 
26 As a special exception, the copyright holders of this library give you
27 permission to link this library with independent modules to produce an
28 executable, regardless of the license terms of these independent
29 modules, and to copy and distribute the resulting executable under
30 terms of your choice, provided that you also meet, for each linked
31 independent module, the terms and conditions of the license of that
32 module.  An independent module is a module which is not derived from
33 or based on this library.  If you modify this library, you may extend
34 this exception to your version of the library, but you are not
35 obligated to do so.  If you do not wish to do so, delete this
36 exception statement from your version. */
37 
38 package gnu.xml.validation.datatype;
39 
40 import javax.xml.XMLConstants;
41 import javax.xml.namespace.QName;
42 import org.relaxng.datatype.DatatypeException;
43 import org.relaxng.datatype.ValidationContext;
44 
45 /**
46  * The XML Schema gYearMonth type.
47  *
48  * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
49  */
50 final class GYearMonthType
51   extends AtomicSimpleType
52 {
53 
54   static class GYearMonth
55     implements Comparable
56   {
57 
58     int year;
59     int month;
60 
hashCode()61     public int hashCode()
62     {
63       return year * 31 + month;
64     }
65 
equals(Object other)66     public boolean equals(Object other)
67     {
68       if (other instanceof GYearMonth)
69         {
70           GYearMonth gmy = (GYearMonth) other;
71           return gmy.year == year && gmy.month == month;
72         }
73       return false;
74     }
75 
compareTo(Object other)76     public int compareTo(Object other)
77     {
78       if (other instanceof GYearMonth)
79         {
80           GYearMonth gmy = (GYearMonth) other;
81           if (gmy.year == year)
82             {
83               if (gmy.month == month)
84                 return 0;
85               return (month < gmy.month) ? -1 : 1;
86             }
87           return (year < gmy.year) ? -1 : 1;
88         }
89       return 0;
90     }
91 
92   }
93 
94   static final int[] CONSTRAINING_FACETS = {
95     Facet.PATTERN,
96     Facet.ENUMERATION,
97     Facet.WHITESPACE,
98     Facet.MAX_INCLUSIVE,
99     Facet.MAX_EXCLUSIVE,
100     Facet.MIN_INCLUSIVE,
101     Facet.MIN_EXCLUSIVE
102   };
103 
GYearMonthType()104   GYearMonthType()
105   {
106     super(new QName(XMLConstants.W3C_XML_SCHEMA_NS_URI, "gYearMonth"),
107           TypeLibrary.ANY_SIMPLE_TYPE);
108   }
109 
getConstrainingFacets()110   public int[] getConstrainingFacets()
111   {
112     return CONSTRAINING_FACETS;
113   }
114 
checkValid(String value, ValidationContext context)115   public void checkValid(String value, ValidationContext context)
116     throws DatatypeException
117   {
118     super.checkValid(value, context);
119     int len = value.length();
120     int state = 0;
121     int start = 0;
122     for (int i = 0; i < len; i++)
123       {
124         char c = value.charAt(i);
125         if (c == '-' && i == 0)
126           {
127             start++;
128             continue;
129           }
130         if (c >= 0x30 && c <= 0x39)
131           continue;
132         switch (state)
133           {
134           case 0: // year
135             if (c == '-')
136               {
137                 String year = value.substring(start, i);
138                 if (year.length() < 4 || Integer.parseInt(year) == 0)
139                   throw new DatatypeException(i, "illegal GYear value");
140                 state = 1;
141                 start = i + 1;
142                 continue;
143               }
144             break;
145           }
146         throw new DatatypeException(i, "illegal GYear value");
147       }
148     switch (state)
149       {
150       case 1: // month
151         if (len - start != 2)
152           throw new DatatypeException("illegal GYear value");
153         break;
154       default:
155         throw new DatatypeException("illegal GYear value");
156       }
157   }
158 
createValue(String literal, ValidationContext context)159   public Object createValue(String literal, ValidationContext context) {
160     try
161       {
162         int offset = 5;
163         if (literal.charAt(0) == '-')
164           offset++;
165         GYearMonth ret = new GYearMonth();
166         ret.year = Integer.parseInt(literal.substring(0, offset));
167         ret.month = Integer.parseInt(literal.substring(offset + 1));
168         return ret;
169       }
170     catch (Exception e)
171       {
172         return null;
173       }
174   }
175 
176 }
177