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1
19
20 package org.netbeans.modules.projectimport.eclipse;
21
22 import java.io.BufferedInputStream  ;
23 import java.io.File ;
24 import java.io.FileInputStream ;
25 import java.io.FileNotFoundException ;
26 import java.io.IOException ;
27 import java.io.InputStream ;
28 import java.io.StringReader ;
29 import org.netbeans.modules.projectimport.ProjectImporterException;
30 import org.openide.ErrorManager;
31 import org.openide.xml.XMLUtil;
32 import org.xml.sax.Attributes ;
33 import org.xml.sax.InputSource ;
34 import org.xml.sax.SAXException ;
35 import org.xml.sax.SAXParseException ;
36 import org.xml.sax.XMLReader ;
37 import org.xml.sax.helpers.DefaultHandler ;
38
39
44 final class ClassPathParser extends DefaultHandler {
45
46 private static final String CLASSPATH = "classpath"; private static final String CLASSPATH_ENTRY = "classpathentry"; private static final String ATTRIBUTES = "attributes"; private static final String ATTRIBUTE = "attribute"; private static final String ACCESSRULES = "accessrules"; private static final String ACCESSRULE = "accessrule";
54 private static final String KIND_ATTR = "kind"; private static final String PATH_ATTR = "path";
58 private static final int POSITION_NONE = 0;
60 private static final int POSITION_CLASSPATH = 1;
61 private static final int POSITION_CLASSPATH_ENTRY = 2;
62 private static final int POSITION_ATTRIBUTES = 3;
63 private static final int POSITION_ATTRIBUTE = 4;
64 private static final int POSITION_ACCESSRULES = 5;
65 private static final int POSITION_ACCESSRULE = 6;
66
67 private int position = POSITION_NONE;
68 private StringBuffer chars;
69
70 private ClassPath classPath;
71
72 private ClassPathParser() {}
73
74
79 static ClassPath parse(File classPathFile) throws ProjectImporterException {
80
81 ClassPathParser parser = new ClassPathParser();
82 InputStream classPathIS = null;
83 try {
84 classPathIS = new BufferedInputStream (
85 new FileInputStream (classPathFile));
86 parser.load(new InputSource (classPathIS));
87 } catch (FileNotFoundException e) {
88 throw new ProjectImporterException(e);
89 } finally {
90 if (classPathIS != null) {
91 try {
92 classPathIS.close();
93 } catch (IOException e) {
94 ErrorManager.getDefault().log(ErrorManager.WARNING,
95 "Unable to close classPathStream: " + e); }
97 }
98 }
99 return parser.classPath;
100 }
101
102
108 static ClassPath parse(String classPath) throws ProjectImporterException {
109 ClassPathParser parser = new ClassPathParser();
110 parser.load(new InputSource (new StringReader (classPath)));
111 return parser.classPath;
112 }
113
114
115 private void load(InputSource projectIS) throws ProjectImporterException{
116 try {
117
118 XMLReader reader = XMLUtil.createXMLReader(false, true);
119 reader.setContentHandler(this);
120 reader.setErrorHandler(this);
121 chars = new StringBuffer (); reader.parse(projectIS); } catch (IOException e) {
124 throw new ProjectImporterException(e);
125 } catch (SAXException e) {
126 throw new ProjectImporterException(e);
127 }
128 }
129
130 public void characters(char ch[], int offset, int length) throws SAXException {
131 chars.append(ch, offset, length);
132 }
133
134 public void startElement(String uri, String localName,
135 String qName, Attributes attributes) throws SAXException {
136
137 chars.setLength(0);
138 switch (position) {
139 case POSITION_NONE:
140 if (localName.equals(CLASSPATH)) {
141 position = POSITION_CLASSPATH;
142 classPath = new ClassPath();
143 } else {
144 unknownElementReached(position, localName);
145 }
146 break;
147 case POSITION_CLASSPATH:
148 if (localName.equals(CLASSPATH_ENTRY)) {
149 ClassPathEntry entry = new ClassPathEntry(
150 attributes.getValue(KIND_ATTR),
151 attributes.getValue(PATH_ATTR));
152 classPath.addEntry(entry);
153 position = POSITION_CLASSPATH_ENTRY;
154 } else {
155 unknownElementReached(position, localName);
156 }
157 break;
158 case POSITION_CLASSPATH_ENTRY:
159 if (localName.equals(ATTRIBUTES)) {
160 position = POSITION_ATTRIBUTES;
163 } else if (localName.equals(ACCESSRULES)) {
164 position = POSITION_ACCESSRULES;
166 } else {
167 unknownElementReached(position, localName);
168 }
169 break;
170 case POSITION_ATTRIBUTES:
171 if (localName.equals(ATTRIBUTE)) {
172 position = POSITION_ATTRIBUTE;
175 } else {
176 unknownElementReached(position, localName);
177 }
178 break;
179 case POSITION_ACCESSRULES:
180 if (localName.equals(ACCESSRULE)) {
181 position = POSITION_ACCESSRULE;
183 } else {
184 unknownElementReached(position, localName);
185 }
186 break;
187 default:
188 unknownElementReached(position, localName);
189 }
190 }
191
192 private void unknownElementReached(int position, String localName) throws SAXException {
193 throw new SAXException ("Unknown element reached: " + "position: " + position + ", element: " + localName); }
196
197 public void endElement(String uri, String localName, String qName) throws
198 SAXException {
199 switch (position) {
200 case POSITION_CLASSPATH:
201 position = POSITION_NONE;
203 break;
204 case POSITION_CLASSPATH_ENTRY:
205 position = POSITION_CLASSPATH;
206 break;
207 case POSITION_ATTRIBUTES:
208 position = POSITION_CLASSPATH_ENTRY;
209 break;
210 case POSITION_ATTRIBUTE:
211 position = POSITION_ATTRIBUTES;
212 break;
213 case POSITION_ACCESSRULES:
214 position = POSITION_CLASSPATH_ENTRY;
215 break;
216 case POSITION_ACCESSRULE:
217 position = POSITION_ACCESSRULES;
218 break;
219 default:
220 ErrorManager.getDefault().log(ErrorManager.WARNING,
221 "Unknown state reached in ClassPathParser, " + "position: " + position + ", element: " + localName); }
224 chars.setLength(0);
225 }
226
227 public void warning(SAXParseException e) throws SAXException {
228 ErrorManager.getDefault().log(ErrorManager.WARNING, "Warning occurred: " + e);
229 }
230
231 public void error(SAXParseException e) throws SAXException {
232 ErrorManager.getDefault().log(ErrorManager.WARNING, "Error occurred: " + e);
233 throw e;
234 }
235
236 public void fatalError(SAXParseException e) throws SAXException {
237 ErrorManager.getDefault().log(ErrorManager.WARNING, "Fatal error occurred: " + e);
238 throw e;
239 }
240
241 }
242 |
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