|
1
28 package net.sf.jguard.ext.util;
29
30 import java.io.BufferedOutputStream  ;
31 import java.io.FileOutputStream ;
32 import java.io.IOException ;
33 import java.net.MalformedURLException ;
34 import java.net.URL ;
35 import java.util.Iterator ;
36 import java.util.List ;
37 import java.util.logging.Level ;
38 import java.util.logging.Logger ;
39 import java.util.regex.Matcher ;
40 import java.util.regex.Pattern ;
41
42 import net.sf.jguard.core.principals.RolePrincipal;
43
44 import org.dom4j.Document;
45 import org.dom4j.DocumentException;
46 import org.dom4j.Element;
47 import org.dom4j.io.OutputFormat;
48 import org.dom4j.io.SAXReader;
49 import org.dom4j.io.XMLWriter;
50
51
56 public class XMLUtils {
57
58 private static final String UTF_8 = "UTF-8";
59
60
61 private static Logger logger = Logger.getLogger(XMLUtils.class.getName());
62
63
64 private static final String DOUBLE_ANTI_SLASH = "\\\\";
65 private static final String SLASH = "/";
66 private static Pattern doubleAntiSlashPattern = Pattern.compile(XMLUtils.DOUBLE_ANTI_SLASH);
67
68 private static final String ESCAPED_BLANK = "%20";
69 private static final String BLANK = " ";
70 private static Pattern blankPattern = Pattern.compile(XMLUtils.BLANK);
71
72 private static final String FILE_SLASH_AND_PLUS = "file:/+";
73 private static Pattern slashAndPlusPattern = Pattern.compile(XMLUtils.FILE_SLASH_AND_PLUS);
74 private static final String FILE_AND_SIX_SLASH = "file://////";
75
76
77
82 public static Document read(String location) {
83
84 location = resolveLocation(location);
85 SAXReader reader = new SAXReader(true);
86 Document document = null;
87
88 URL url = null;
89 try {
90 url = new URL (location);
91 } catch (MalformedURLException e) {
92 logger.severe("read(String) : " + e);
93 if (logger.isLoggable(Level.FINEST)) {
94 logger.finest("read() - the 'fileLocation' value ( " + location
95 + " ) present in the web.xml file is a malformed URL ");
96 }
97 }
98
99 try {
100 document = reader.read(url);
101 } catch (DocumentException e1) {
102 logger.severe("read(String) : " + e1);
103 }
104
105 if(document==null){
106 throw new IllegalArgumentException (location+" does not point to an XML document ");
107 }
108 return document;
109 }
110
111
116 public static String resolveLocation(String location) {
117 if(location==null){
118 throw new IllegalArgumentException (" location is null ");
119 }
120 location = location.trim();
122
123 Matcher blankMatcher = blankPattern.matcher(location);
125 location = blankMatcher.replaceAll(XMLUtils.ESCAPED_BLANK);
126
127 Matcher antiSlashMatcher = doubleAntiSlashPattern.matcher(location);
129 location = antiSlashMatcher.replaceAll(XMLUtils.SLASH);
130
131 if(-1==location.indexOf(':')||1==location.indexOf(':')){
133 location = new StringBuffer ("file://////").append(location).toString();
134 }
135
136
137 if (logger.isLoggable(Level.FINEST)) {
138 logger.finest("location="+location);
139 }
140 return location;
141 }
142
143 public static void write(String fileLocation,Document document) throws IOException {
144 XMLUtils.write(new URL (fileLocation),document);
145 }
146
147
153 public static void write(URL url,Document document) throws IOException {
154 OutputFormat outFormat = OutputFormat.createPrettyPrint();
155 if(document.getXMLEncoding()!=null){
156 outFormat.setEncoding(document.getXMLEncoding());
157 }else{
158 outFormat.setEncoding(UTF_8);
159 }
160 XMLWriter out = new XMLWriter(new BufferedOutputStream (new FileOutputStream (url.getPath())),outFormat);
161 out.write(document);
162 out.flush();
163 out.close();
164 }
165
166
172 public static void deletePrincipalRefs(Element root, RolePrincipal principal){
173 Element principalsElement = root.element("principals");
174 List principalsRefList = principalsElement.selectNodes("//principalRef[@name='"+principal.getLocalName()+"']");
175 Iterator descendantsRefIt = principalsRefList.iterator();
176 while(descendantsRefIt.hasNext()){
177 Element principalRef = (Element)descendantsRefIt.next();
178 Element principalElement = principalRef.getParent();
179 principalElement.remove(principalRef);
180 if(principalElement.elements("principalRef").size()==0){
181 principalElement.getParent().remove(principalElement);
182 }
183 }
184 }
185
186
187 }
188 |
Popular Tags |
Java API By Example, From Geeks To Geeks.