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1
23
24 package org.apache.webdav.lib.util;
25
26 import java.io.OutputStreamWriter  ;
27 import java.io.PrintWriter ;
28 import java.io.UnsupportedEncodingException ;
29 import java.io.Writer ;
30
31 import org.w3c.dom.Attr ;
32 import org.w3c.dom.Document ;
33 import org.w3c.dom.NamedNodeMap ;
34 import org.w3c.dom.Node ;
35 import org.w3c.dom.NodeList ;
36
37 public class PropertyWriter {
38
39
43
44 private static String
45 PRINTWRITER_ENCODING = "UTF8";
46
47 private static String MIME2JAVA_ENCODINGS[] =
48 { "Default", "UTF-8", "US-ASCII", "ISO-8859-1", "ISO-8859-2", "ISO-8859-3", "ISO-8859-4",
49 "ISO-8859-5", "ISO-8859-6", "ISO-8859-7", "ISO-8859-8", "ISO-8859-9", "ISO-2022-JP",
50 "SHIFT_JIS", "EUC-JP","GB2312", "BIG5", "EUC-KR", "ISO-2022-KR", "KOI8-R", "EBCDIC-CP-US",
51 "EBCDIC-CP-CA", "EBCDIC-CP-NL", "EBCDIC-CP-DK", "EBCDIC-CP-NO", "EBCDIC-CP-FI", "EBCDIC-CP-SE",
52 "EBCDIC-CP-IT", "EBCDIC-CP-ES", "EBCDIC-CP-GB", "EBCDIC-CP-FR", "EBCDIC-CP-AR1",
53 "EBCDIC-CP-HE", "EBCDIC-CP-CH", "EBCDIC-CP-ROECE","EBCDIC-CP-YU",
54 "EBCDIC-CP-IS", "EBCDIC-CP-AR2", "UTF-16"
55 };
56
57
58
59 protected PrintWriter out;
60
61
62 protected boolean canonical;
63
64
65 public PropertyWriter(String encoding, boolean canonical)
66 throws UnsupportedEncodingException {
67 out = new PrintWriter (new OutputStreamWriter (System.out, encoding));
68 this.canonical = canonical;
69 }
71
75
76 public PropertyWriter(boolean canonical) throws UnsupportedEncodingException {
77 this( getWriterEncoding(), canonical);
78 }
79
80 public PropertyWriter(Writer writer, boolean canonical) {
81 out = new PrintWriter (writer);
82 this.canonical = canonical;
83 }
84
85 public static String getWriterEncoding( ) {
86 return (PRINTWRITER_ENCODING);
87 }
89 public static void setWriterEncoding( String encoding ) {
90 if( encoding.equalsIgnoreCase( "DEFAULT" ) )
91 PRINTWRITER_ENCODING = "UTF8";
92 else if( encoding.equalsIgnoreCase( "UTF-16" ) )
93 PRINTWRITER_ENCODING = "Unicode";
94 else
95 PRINTWRITER_ENCODING = MIME2Java.convert( encoding );
96 }
98
99 public static boolean isValidJavaEncoding( String encoding ) {
100 for ( int i = 0; i < MIME2JAVA_ENCODINGS.length; i++ )
101 if ( encoding.equals( MIME2JAVA_ENCODINGS[i] ) )
102 return (true);
103
104 return (false);
105 }
107
108
109 public void print(Node node) {
110
111 if ( node == null ) {
113 return;
114 }
115
116 int type = node.getNodeType();
117 switch ( type ) {
118 case Node.DOCUMENT_NODE: {
120 if ( !canonical ) {
121 String Encoding = getWriterEncoding();
122 if( Encoding.equalsIgnoreCase( "DEFAULT" ) )
123 Encoding = "UTF-8";
124 else if( Encoding.equalsIgnoreCase( "Unicode" ) )
125 Encoding = "UTF-16";
126 else
127 Encoding = MIME2Java.reverse( Encoding );
128
129 out.println("<?xml version=\"1.0\" encoding=\""+
130 Encoding + "\"?>");
131 }
132 print(((Document )node).getDocumentElement());
133 out.flush();
134 break;
135 }
136
137 case Node.ELEMENT_NODE: {
139 out.print('<');
140 out.print(node.getLocalName());
141 out.print(' ');
142 out.print("xmlns=\"");
143 if (node.getNamespaceURI() != null) {
144 out.print(node.getNamespaceURI());
145 }
146 out.print("\"");
147 Attr attrs[] = sortAttributes(node.getAttributes());
148 for ( int i = 0; i < attrs.length; i++ ) {
149 Attr attr = attrs[i];
150 if (!attr.getNodeName().equals("xmlns")) {
151 out.print(' ');
152 out.print(attr.getNodeName());
153 out.print("=\"");
154 out.print(normalize(attr.getNodeValue()));
155 out.print('"');
156 }
157 }
158 out.print('>');
159 NodeList children = node.getChildNodes();
160 if ( children != null ) {
161 int len = children.getLength();
162 for ( int i = 0; i < len; i++ ) {
163 print(children.item(i));
164 }
165 }
166 break;
167 }
168
169 case Node.ENTITY_REFERENCE_NODE: {
171 if ( canonical ) {
172 NodeList children = node.getChildNodes();
173 if ( children != null ) {
174 int len = children.getLength();
175 for ( int i = 0; i < len; i++ ) {
176 print(children.item(i));
177 }
178 }
179 } else {
180 out.print('&');
181 out.print(node.getNodeName());
182 out.print(';');
183 }
184 break;
185 }
186
187 case Node.CDATA_SECTION_NODE: {
189 if ( canonical ) {
190 out.print(normalize(node.getNodeValue()));
191 } else {
192 out.print("<![CDATA[");
193 out.print(node.getNodeValue());
194 out.print("]]>");
195 }
196 break;
197 }
198
199 case Node.TEXT_NODE: {
201 out.print(normalize(node.getNodeValue()));
202 break;
203 }
204
205 case Node.PROCESSING_INSTRUCTION_NODE: {
207 out.print("<?");
208 out.print(node.getNodeName());
209 String data = node.getNodeValue();
210 if ( data != null && data.length() > 0 ) {
211 out.print(' ');
212 out.print(data);
213 }
214 out.print("?>");
215 break;
216 }
217 }
218
219 if ( type == Node.ELEMENT_NODE ) {
220 out.print("</");
221 out.print(node.getLocalName());
222 out.print('>');
223 }
224
225 out.flush();
226
227 }
229
230 protected Attr [] sortAttributes(NamedNodeMap attrs) {
231
232 int len = (attrs != null) ? attrs.getLength() : 0;
233 Attr array[] = new Attr [len];
234 for ( int i = 0; i < len; i++ ) {
235 array[i] = (Attr )attrs.item(i);
236 }
237 for ( int i = 0; i < len - 1; i++ ) {
238 String name = array[i].getNodeName();
239 int index = i;
240 for ( int j = i + 1; j < len; j++ ) {
241 String curName = array[j].getNodeName();
242 if ( curName.compareTo(name) < 0 ) {
243 name = curName;
244 index = j;
245 }
246 }
247 if ( index != i ) {
248 Attr temp = array[i];
249 array[i] = array[index];
250 array[index] = temp;
251 }
252 }
253
254 return (array);
255
256 }
258
259
260 protected String normalize(String s) {
261 StringBuffer str = new StringBuffer ();
262
263 int len = (s != null) ? s.length() : 0;
264 for ( int i = 0; i < len; i++ ) {
265 char ch = s.charAt(i);
266 switch ( ch ) {
267 case '<': {
268 str.append("<");
269 break;
270 }
271 case '>': {
272 str.append(">");
273 break;
274 }
275 case '&': {
276 str.append("&");
277 break;
278 }
279 case '"': {
280 str.append(""");
281 break;
282 }
283 case '\r':
284 case '\n': {
285 if ( canonical ) {
286 str.append("&#");
287 str.append(Integer.toString(ch));
288 str.append(';');
289 break;
290 }
291 }
293 default: {
294 str.append(ch);
295 }
296 }
297 }
298
299 return (str.toString());
300
301 }
303 }
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