1 /* XMLEventImpl.java -- 2 Copyright (C) 2005,2006 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.stream; 39 40 import gnu.java.lang.CPStringBuilder; 41 42 import java.io.Writer; 43 import javax.xml.namespace.QName; 44 import javax.xml.stream.Location; 45 import javax.xml.stream.XMLStreamException; 46 import javax.xml.stream.events.Characters; 47 import javax.xml.stream.events.EndElement; 48 import javax.xml.stream.events.StartElement; 49 import javax.xml.stream.events.XMLEvent; 50 51 /** 52 * An XML stream event. 53 * 54 * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a> 55 */ 56 public abstract class XMLEventImpl 57 implements XMLEvent 58 { 59 60 protected final Location location; 61 XMLEventImpl(Location location)62 protected XMLEventImpl(Location location) 63 { 64 this.location = location; 65 } 66 getEventType()67 public abstract int getEventType(); 68 getLocation()69 public Location getLocation() 70 { 71 return location; 72 } 73 isStartElement()74 public boolean isStartElement() 75 { 76 return getEventType() == START_ELEMENT; 77 } 78 isAttribute()79 public boolean isAttribute() 80 { 81 return getEventType() == ATTRIBUTE; 82 } 83 isNamespace()84 public boolean isNamespace() 85 { 86 return getEventType() == NAMESPACE; 87 } 88 isEndElement()89 public boolean isEndElement() 90 { 91 return getEventType() == END_ELEMENT; 92 } 93 isEntityReference()94 public boolean isEntityReference() 95 { 96 return getEventType() == ENTITY_REFERENCE; 97 } 98 isProcessingInstruction()99 public boolean isProcessingInstruction() 100 { 101 return getEventType() == PROCESSING_INSTRUCTION; 102 } 103 isCharacters()104 public boolean isCharacters() 105 { 106 int et = getEventType(); 107 return et == CHARACTERS || et == CDATA; 108 } 109 isStartDocument()110 public boolean isStartDocument() 111 { 112 return getEventType() == START_DOCUMENT; 113 } 114 isEndDocument()115 public boolean isEndDocument() 116 { 117 return getEventType() == END_DOCUMENT; 118 } 119 asStartElement()120 public StartElement asStartElement() 121 { 122 return (StartElement) this; 123 } 124 asEndElement()125 public EndElement asEndElement() 126 { 127 return (EndElement) this; 128 } 129 asCharacters()130 public Characters asCharacters() 131 { 132 return (Characters) this; 133 } 134 getSchemaType()135 public QName getSchemaType() 136 { 137 return null; 138 } 139 writeAsEncodedUnicode(Writer writer)140 public abstract void writeAsEncodedUnicode(Writer writer) 141 throws XMLStreamException; 142 encode(String text, boolean inAttr)143 protected String encode(String text, boolean inAttr) 144 { 145 int len = text.length(); 146 CPStringBuilder buf = null; 147 for (int i = 0; i < len; i++) 148 { 149 char c = text.charAt(i); 150 if (c == '<') 151 { 152 if (buf == null) 153 { 154 buf = new CPStringBuilder(text.substring(0, i)); 155 } 156 buf.append("<"); 157 } 158 else if (c == '>') 159 { 160 if (buf == null) 161 { 162 buf = new CPStringBuilder(text.substring(0, i)); 163 } 164 buf.append(">"); 165 } 166 else if (c == '&') 167 { 168 if (buf == null) 169 { 170 buf = new CPStringBuilder(text.substring(0, i)); 171 } 172 buf.append("&"); 173 } 174 else if (c == '\'' && inAttr) 175 { 176 if (buf == null) 177 { 178 buf = new CPStringBuilder(text.substring(0, i)); 179 } 180 buf.append("'"); 181 } 182 else if (c == '"' && inAttr) 183 { 184 if (buf == null) 185 { 186 buf = new CPStringBuilder(text.substring(0, i)); 187 } 188 buf.append("""); 189 } 190 else if (buf != null) 191 { 192 buf.append(c); 193 } 194 } 195 return (buf == null) ? text : buf.toString(); 196 } 197 198 } 199