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1
19
20 package org.netbeans.modules.projectimport.eclipse;
21
22 import java.io.BufferedInputStream  ;
23 import java.io.FileInputStream ;
24 import java.io.IOException ;
25 import java.io.InputStream ;
26 import org.netbeans.modules.projectimport.ProjectImporterException;
27 import org.openide.ErrorManager;
28 import org.openide.xml.XMLUtil;
29 import org.xml.sax.Attributes ;
30 import org.xml.sax.InputSource ;
31 import org.xml.sax.SAXException ;
32 import org.xml.sax.SAXParseException ;
33 import org.xml.sax.XMLReader ;
34 import org.xml.sax.helpers.DefaultHandler ;
35
36
42 final class ProjectParser extends DefaultHandler {
43
44 private final EclipseProject project;
45 private ClassPath.Link currentLink;
46
47 private static final String JAVA_NATURE = "org.eclipse.jdt.core.javanature";
49 private static final String PROJECT_DESCRIPTION = "projectDescription"; private static final String LINKED_RESOURCES = "linkedResources"; private static final String LINK = "link"; private static final String NAME = "name"; private static final String TYPE = "type"; private static final String LOCATION = "location"; private static final String NATURES = "natures"; private static final String NATURE = "nature";
59 private static final int POSITION_NONE = 0;
61 private static final int POSITION_PROJECT_DESCRIPTION = 1;
62 private static final int POSITION_PROJECT_NAME = 2;
63 private static final int POSITION_LINKED_RESOURCES = 3;
64 private static final int POSITION_LINK = 4;
65 private static final int POSITION_LINK_NAME = 5;
66 private static final int POSITION_LINK_TYPE = 6;
67 private static final int POSITION_LINK_LOCATION = 7;
68 private static final int POSITION_NATURES = 8;
69 private static final int POSITION_NATURE = 9;
70 private static final int POSITION_UNUSED = 1000;
71
72 private int position = POSITION_NONE;
73 private int unusedInner = 0;
74 private StringBuffer chars;
75
76
77 private ProjectParser(EclipseProject project) {
78 this.project = project;
79 }
80
81 static void parse(EclipseProject project) throws ProjectImporterException {
82 ProjectParser parser = new ProjectParser(project);
83 parser.load();
84 }
85
86
87 private void load() throws ProjectImporterException {
88 InputStream projectIS = null;
89 try {
90 projectIS = new BufferedInputStream (
91 new FileInputStream (project.getProjectFile()));
92 XMLReader reader = XMLUtil.createXMLReader(false, true);
93 reader.setContentHandler(this);
94 reader.setErrorHandler(this);
95 chars = new StringBuffer (); reader.parse(new InputSource (projectIS)); } catch (IOException e) {
98 throw new ProjectImporterException(e);
99 } catch (SAXException e) {
100 throw new ProjectImporterException(e);
101 } finally {
102 if (projectIS != null) {
103 try {
104 projectIS.close();
105 } catch (IOException e) {
106 ErrorManager.getDefault().log(ErrorManager.WARNING,
107 "Unable to close projectInputStream: " + e); }
109 }
110 }
111 }
112
113 public void characters(char ch[], int offset, int length) throws SAXException {
114 chars.append(ch, offset, length);
115 }
116
117 public void startElement(String uri, String localName,
118 String qName, Attributes attributes) throws SAXException {
119
120 chars.setLength(0);
121 switch (position) {
122 case POSITION_NONE:
123 if (localName.equals(PROJECT_DESCRIPTION)) {
124 position = POSITION_PROJECT_DESCRIPTION;
125 } else {
126 throw (new SAXException ("First element has to be " + PROJECT_DESCRIPTION + ", but is " + localName)); }
129 break;
130 case POSITION_PROJECT_DESCRIPTION:
131 if (localName.equals(NAME)) {
132 position = POSITION_PROJECT_NAME;
133 } else if (localName.equals(LINKED_RESOURCES)) {
134 position = POSITION_LINKED_RESOURCES;
135 } else if (localName.equals(NATURES)) {
136 position = POSITION_NATURES;
137 } else {
138 position = POSITION_UNUSED;
139 unusedInner++;
140 }
141 break;
142 case POSITION_NATURES:
143 if (localName.equals(NATURE)) {
144 position = POSITION_NATURE;
145 }
146 break;
147 case POSITION_LINKED_RESOURCES:
148 if (localName.equals(LINK)) {
149 currentLink = new ClassPath.Link();
150 position = POSITION_LINK;
151 }
152 break;
153 case POSITION_LINK:
154 if (localName.equals(NAME)) {
155 position = POSITION_LINK_NAME;
156 } else if (localName.equals(TYPE)) {
157 position = POSITION_LINK_TYPE;
158 } else if (localName.equals(LOCATION)) {
159 position = POSITION_LINK_LOCATION;
160 }
161 break;
162 default:
163 position = POSITION_UNUSED;
164 unusedInner++;
165 }
166 }
167
168 public void endElement(String uri, String localName, String qName) throws
169 SAXException {
170 switch (position) {
171 case POSITION_PROJECT_DESCRIPTION:
172 position = POSITION_NONE;
174 break;
175 case POSITION_PROJECT_NAME:
176 if (unusedInner == 0) {
177 if (localName.equals(NAME)) {
178 project.setName(chars.toString().trim());
181 position = POSITION_PROJECT_DESCRIPTION;
182 }
183 break;
184 }
185 case POSITION_LINKED_RESOURCES:
186 case POSITION_NATURES:
187 position = POSITION_PROJECT_DESCRIPTION;
188 break;
189 case POSITION_NATURE:
190 if (localName.equals(NATURE)) {
191 String nature = chars.toString().trim();
192 if (JAVA_NATURE.equals(nature)) {
193 project.setJavaNature(true);
194 } else {
195 project.addOtherNature(nature);
196 }
197 }
198 position = POSITION_NATURES;
199 break;
200 case POSITION_LINK:
201 processLink(localName);
202 break;
203 case POSITION_LINK_NAME:
204 processLinkName(localName);
205 break;
206 case POSITION_LINK_TYPE:
207 processLinkType(localName);
208 break;
209 case POSITION_LINK_LOCATION:
210 processLinkLocation(localName);
211 break;
212 case POSITION_UNUSED:
213 if (--unusedInner == 0) {
214 position = POSITION_PROJECT_DESCRIPTION;
215 }
216 break;
217 default:
218 ErrorManager.getDefault().log(ErrorManager.WARNING,
219 "Unknown state reached in ProjectParser, " + "position: " + position); }
222 chars.setLength(0);
223 }
224
225 public void warning(SAXParseException e) throws SAXException {
226 ErrorManager.getDefault().log(ErrorManager.WARNING, "Warning occurred: " + e);
227 }
228
229 public void error(SAXParseException e) throws SAXException {
230 ErrorManager.getDefault().log(ErrorManager.WARNING, "Error occurres: " + e);
231 throw e;
232 }
233
234 public void fatalError(SAXParseException e) throws SAXException {
235 ErrorManager.getDefault().log(ErrorManager.WARNING, "Fatal error occurres: " + e);
236 throw e;
237 }
238
239
242 private void processLink(String elementName) throws SAXException {
243 if (elementName.equals(LINK)) {
244 position = POSITION_LINKED_RESOURCES;
245 String name = currentLink.getName();
247 int type = currentLink.getType();
248 String location = currentLink.getLocation();
249 try {
250 if ((name == null) || name.length() == 0) {
251 throw new SAXException (
252 "Link's name cannot be empty"); }
254 if (type == ClassPath.Link.TYPE_INVALID) {
255 throw new SAXException (
256 "Link's type cannot be equal to " + type); }
258 if ((location == null) || location.length() == 0) {
259 throw new SAXException (
260 "Link's location cannot be empty"); }
262 project.addLink(currentLink);
263 } finally {
264 currentLink = null;
265 }
266 }
267 }
268
269
270 private void processLinkLocation(String elementName) throws SAXException {
271 if (elementName.equals(LOCATION)) {
272 String location = chars.toString().trim();
273 if (currentLink.getLocation() != null) {
274 throw new SAXException (
275 "Link's location was already set. There can be only " + "one location element inside of link element"); }
278 currentLink.setLocation(location);
279 position = POSITION_LINK;
280 }
281 }
282
283
284 private void processLinkName(String elementName) throws SAXException {
285 if (elementName.equals(NAME)) {
286 String name = chars.toString().trim();
287 if (currentLink.getName() != null) {
288 throw new SAXException (
289 "Link's name was already set. There can be only " + "one name element inside of link element"); }
292 currentLink.setName(name);
293 position = POSITION_LINK;
294 }
295 }
296
297
298 private void processLinkType(String elementName) throws SAXException {
299 if (elementName.equals(TYPE)) {
300 if (currentLink.getType() != ClassPath.Link.TYPE_INVALID) {
302 throw new SAXException (
303 "Link's type was already set. There can be only " + "one type element inside of link element"); }
306 try {
307 currentLink.setType(Integer.parseInt(chars.toString().trim()));
308 position = POSITION_LINK;
309 } catch (NumberFormatException e) {
310 throw new SAXException ("Link's type has to be a " + "number but is: " + chars.toString().trim()); }
313 }
314 }
315
316 }
317 |
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