1 /* Base64BinaryType.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 base64Binary type. 47 * 48 * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a> 49 */ 50 final class Base64BinaryType 51 extends AtomicSimpleType 52 { 53 54 static final String B64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" + 55 "abcdefghijklmnopqrstuvwxyz0123456789+/"; 56 static final String B16 = "AEIMQUYcgkosw048"; 57 static final String B04 = "AQgw"; 58 59 static final int[] CONSTRAINING_FACETS = { 60 Facet.LENGTH, 61 Facet.MIN_LENGTH, 62 Facet.MAX_LENGTH, 63 Facet.PATTERN, 64 Facet.ENUMERATION, 65 Facet.WHITESPACE 66 }; 67 Base64BinaryType()68 Base64BinaryType() 69 { 70 super(new QName(XMLConstants.W3C_XML_SCHEMA_NS_URI, "base64Binary"), 71 TypeLibrary.ANY_SIMPLE_TYPE); 72 } 73 getConstrainingFacets()74 public int[] getConstrainingFacets() 75 { 76 return CONSTRAINING_FACETS; 77 } 78 checkValid(String value, ValidationContext context)79 public void checkValid(String value, ValidationContext context) 80 throws DatatypeException 81 { 82 super.checkValid(value, context); 83 // TODO value = collapseWhitespace(value); 84 int len = value.length(); 85 try 86 { 87 for (int i = len - 1; i >= 0; ) 88 { 89 char c4 = value.charAt(i--); 90 if (c4 == ' ') 91 c4 = value.charAt(i--); 92 char c3 = value.charAt(i--); 93 if (c3 == ' ') 94 c3 = value.charAt(i--); 95 char c2 = value.charAt(i--); 96 if (c2 == ' ') 97 c2 = value.charAt(i--); 98 char c1 = value.charAt(i--); 99 if (c1 == ' ') 100 c1 = value.charAt(i--); 101 102 if (c4 == '=') 103 { 104 if (c3 == '=') 105 { 106 if (B04.indexOf(c2) != -1 && 107 B64.indexOf(c1) != -1) 108 continue; 109 } 110 else if (B16.indexOf(c3) != -1) 111 { 112 if (B64.indexOf(c2) != -1 && 113 B64.indexOf(c1) != -1) 114 continue; 115 } 116 } 117 else if (B64.indexOf(c4) != -1) 118 continue; 119 throw new DatatypeException(i, "illegal BASE64"); 120 } 121 } 122 catch (IndexOutOfBoundsException e) 123 { 124 throw new DatatypeException("illegal BASE64"); 125 } 126 } 127 128 } 129