net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpeclipse/obfuscator/ObfuscatorIgnoreSet.java

   1 /*
   2  * (c) Copyright IBM Corp. 2000, 2001.
   3  * All Rights Reserved.
   4  */
   5 package net.sourceforge.phpeclipse.obfuscator;
   6
   7 import java.io.File;
   8 import java.io.FileInputStream;
   9 import java.io.FileOutputStream;
  10 import java.io.IOException;
  11 import java.io.InputStream;
  12 import java.io.OutputStream;
  13 import java.util.HashMap;
  14 import java.util.Iterator;
  15
  16 import javax.xml.parsers.DocumentBuilder;
  17 import javax.xml.parsers.DocumentBuilderFactory;
  18 import javax.xml.parsers.ParserConfigurationException;
  19 import javax.xml.transform.OutputKeys;
  20 import javax.xml.transform.Transformer;
  21 import javax.xml.transform.TransformerException;
  22 import javax.xml.transform.TransformerFactory;
  23 import javax.xml.transform.dom.DOMSource;
  24 import javax.xml.transform.stream.StreamResult;
  25
  26 import net.sourceforge.phpeclipse.PHPeclipsePlugin;
  27
  28 import org.eclipse.core.runtime.CoreException;
  29 import org.w3c.dom.Document;
  30 import org.w3c.dom.NamedNodeMap;
  31 import org.w3c.dom.Node;
  32 import org.w3c.dom.NodeList;
  33 import org.w3c.dom.Text;
  34 import org.xml.sax.InputSource;
  35 import org.xml.sax.SAXException;
  36
  37 /**
  38  * <code>ObfuscatorIgnoreSet</code> manages a collection of templates and
  39  * makes them persistent.
  40  */
  41 public class ObfuscatorIgnoreSet {
  42
  43         // private static class TemplateComparator implements Comparator {
  44         // public int compare(Object arg0, Object arg1) {
  45         // if (arg0 == arg1)
  46         // return 0;
  47         //
  48         // if (arg0 == null)
  49         // return -1;
  50         //
  51         // Template template0= (Template) arg0;
  52         // Template template1= (Template) arg1;
  53         //
  54         // return template0.getName().compareTo(template1.getName());
  55         // }
  56         // }
  57
  58         private static final String TEMPLATE_TAG = "ignore"; //$NON-NLS-1$
  59
  60         // private static final String NAME_ATTRIBUTE= "name"; //$NON-NLS-1$
  61         // private static final String DESCRIPTION_ATTRIBUTE= "description";
  62         // //$NON-NLS-1$
  63         // private static final String CONTEXT_ATTRIBUTE= "context"; //$NON-NLS-1$
  64         // private static final String ENABLED_ATTRIBUTE= "enabled"; //$NON-NLS-1$
  65
  66         // private List fTemplates= new ArrayList();
  67         private HashMap fIdentifierMap = new HashMap();
  68
  69         // private Comparator fTemplateComparator= new TemplateComparator();
  70         // private Template[] fSortedTemplates= new Template[0];
  71
  72         /**
  73          * Convenience method for reading templates from a file.
  74          *
  75          * @see #addFromStream(InputStream)
  76          */
  77         public void addFromFile(File file) throws CoreException {
  78                 InputStream stream = null;
  79
  80                 try {
  81                         stream = new FileInputStream(file);
  82                         addFromStream(stream);
  83
  84                 } catch (IOException e) {
  85                         throwReadException(e);
  86
  87                 } finally {
  88                         try {
  89                                 if (stream != null)
  90                                         stream.close();
  91                         } catch (IOException e) {
  92                         }
  93                 }
  94         }
  95
  96         /**
  97          * Reads templates from a XML stream and adds them to the template set.
  98          */
  99         public void addFromStream(InputStream stream) throws CoreException {
 100                 try {
 101                         DocumentBuilderFactory factory = DocumentBuilderFactory
 102                                         .newInstance();
 103                         DocumentBuilder parser = factory.newDocumentBuilder();
 104                         Document document = parser.parse(new InputSource(stream));
 105                         NodeList elements = document.getElementsByTagName(TEMPLATE_TAG);
 106
 107                         int count = elements.getLength();
 108                         for (int i = 0; i != count; i++) {
 109                                 Node node = elements.item(i);
 110                                 NamedNodeMap attributes = node.getAttributes();
 111
 112                                 if (attributes == null)
 113                                         continue;
 114
 115                                 // String name= getAttributeValue(attributes, NAME_ATTRIBUTE);
 116                                 // String description= getAttributeValue(attributes,
 117                                 // DESCRIPTION_ATTRIBUTE);
 118                                 // String context= getAttributeValue(attributes,
 119                                 // CONTEXT_ATTRIBUTE);
 120                                 // Node enabledNode= attributes.getNamedItem(ENABLED_ATTRIBUTE);
 121
 122                                 // if (name == null || description == null || context == null)
 123                                 // throw new
 124                                 // SAXException(ObfuscatorMessages.getString("TemplateSet.error.missing.attribute"));
 125                                 // //$NON-NLS-1$
 126
 127                                 // boolean enabled= true; //(enabledNode == null) ||
 128                                 // (enabledNode.getNodeValue().equals("true")); //$NON-NLS-1$
 129
 130                                 StringBuffer buffer = new StringBuffer();
 131                                 NodeList children = node.getChildNodes();
 132                                 for (int j = 0; j != children.getLength(); j++) {
 133                                         String value = children.item(j).getNodeValue();
 134                                         if (value != null)
 135                                                 buffer.append(value);
 136                                 }
 137                                 String pattern = buffer.toString().trim();
 138                                 fIdentifierMap.put(pattern, new PHPIdentifier(pattern,
 139                                                 PHPIdentifier.VARIABLE));
 140                                 // Template template= new Template(name, description, context,
 141                                 // pattern);
 142                                 // template.setEnabled(enabled);
 143                                 // add(template);
 144                         }
 145
 146                         // sort();
 147
 148                 } catch (ParserConfigurationException e) {
 149                         throwReadException(e);
 150                 } catch (IOException e) {
 151                         throwReadException(e);
 152                 } catch (SAXException e) {
 153                         throwReadException(e);
 154                 }
 155         }
 156
 157 //      private String getAttributeValue(NamedNodeMap attributes, String name) {
 158 //              Node node = attributes.getNamedItem(name);
 159 //
 160 //              return node == null ? null : node.getNodeValue();
 161 //      }
 162
 163         /**
 164          * Convenience method for saving to a file.
 165          *
 166          * @see #saveToStream(OutputStream)
 167          */
 168         public void saveToFile(File file) throws CoreException {
 169                 OutputStream stream = null;
 170
 171                 try {
 172                         stream = new FileOutputStream(file);
 173                         saveToStream(stream);
 174                 } catch (IOException e) {
 175                         throwWriteException(e);
 176
 177                 } finally {
 178                         try {
 179                                 if (stream != null)
 180                                         stream.close();
 181                         } catch (IOException e) {
 182                         }
 183                 }
 184         }
 185
 186         /**
 187          * Saves the template set as XML.
 188          */
 189         public void saveToStream(OutputStream stream) throws CoreException {
 190                 try {
 191                         DocumentBuilderFactory factory = DocumentBuilderFactory
 192                                         .newInstance();
 193                         DocumentBuilder builder = factory.newDocumentBuilder();
 194                         Document document = builder.newDocument();
 195
 196                         Node root = document.createElement("obfuscator"); // $NON-NLS-1$
 197                                                                                                                                 // //$NON-NLS-1$
 198                         document.appendChild(root);
 199                         Iterator iter = fIdentifierMap.keySet().iterator();
 200                         while (iter.hasNext()) {
 201                                 // for (int i= 0; i != fTemplates.size(); i++) {
 202                                 // Template template= (Template) fTemplates.get(i);
 203
 204                                 Node node = document.createElement("ignore"); // $NON-NLS-1$
 205                                                                                                                                 // //$NON-NLS-1$
 206                                 root.appendChild(node);
 207
 208                                 // NamedNodeMap attributes= node.getAttributes();
 209                                 //
 210                                 // Attr name= document.createAttribute(NAME_ATTRIBUTE);
 211                                 // name.setValue(template.getName());
 212                                 // attributes.setNamedItem(name);
 213                                 //
 214                                 // Attr description=
 215                                 // document.createAttribute(DESCRIPTION_ATTRIBUTE);
 216                                 // description.setValue(template.getDescription());
 217                                 // attributes.setNamedItem(description);
 218                                 //
 219                                 // Attr context= document.createAttribute(CONTEXT_ATTRIBUTE);
 220                                 // context.setValue(template.getContextTypeName());
 221                                 // attributes.setNamedItem(context);
 222                                 //
 223                                 // Attr enabled= document.createAttribute(ENABLED_ATTRIBUTE);
 224                                 // enabled.setValue(template.isEnabled() ? "true" : "false");
 225                                 // //$NON-NLS-1$ //$NON-NLS-2$
 226                                 // attributes.setNamedItem(enabled);
 227
 228                                 Text pattern = document.createTextNode((String) iter.next());
 229                                 node.appendChild(pattern);
 230                         }
 231                         Transformer transformer = TransformerFactory.newInstance()
 232                                         .newTransformer();
 233                         transformer.setOutputProperty(OutputKeys.METHOD, "xml"); //$NON-NLS-1$
 234                         transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8"); //$NON-NLS-1$
 235                         DOMSource source = new DOMSource(document);
 236                         StreamResult result = new StreamResult(stream);
 237
 238                         transformer.transform(source, result);
 239
 240                 } catch (ParserConfigurationException e) {
 241                         throwWriteException(e);
 242                 } catch (TransformerException e) {
 243                         throwWriteException(e);
 244                 }
 245                 // OutputFormat format = new OutputFormat();
 246                 // format.setPreserveSpace(true);
 247                 // Serializer serializer =
 248                 // SerializerFactory.getSerializerFactory("xml").makeSerializer(stream,
 249                 // format); //$NON-NLS-1$
 250                 // serializer.asDOMSerializer().serialize(document);
 251                 //
 252                 // } catch (ParserConfigurationException e) {
 253                 // throwWriteException(e);
 254                 // } catch (IOException e) {
 255                 // throwWriteException(e);
 256                 // }
 257         }
 258
 259         private static void throwReadException(Throwable t) throws CoreException {
 260                 PHPeclipsePlugin.log(t);
 261                 // IStatus status= new
 262                 // JavaUIStatus(JavaStatusConstants.TEMPLATE_IO_EXCEPTION,
 263                 // ObfuscatorMessages.getString("TemplateSet.error.read"), t);
 264                 // //$NON-NLS-1$
 265                 // throw new JavaUIException(status);
 266         }
 267
 268         private static void throwWriteException(Throwable t) throws CoreException {
 269                 PHPeclipsePlugin.log(t);
 270                 // IStatus status= new
 271                 // JavaUIStatus(JavaStatusConstants.TEMPLATE_IO_EXCEPTION,
 272                 // ObfuscatorMessages.getString("TemplateSet.error.write"), t);
 273                 // //$NON-NLS-1$
 274                 // throw new JavaUIException(status);
 275         }
 276
 277         /**
 278          * Adds a template to the set.
 279          */
 280         // public void add(Template template) {
 281         // if (exists(template))
 282         // return; // ignore duplicate
 283         //
 284         // fTemplates.add(template);
 285         // sort();
 286         // }
 287         // private boolean exists(Template template) {
 288         // for (Iterator iterator = fTemplates.iterator(); iterator.hasNext();) {
 289         // Template anotherTemplate = (Template) iterator.next();
 290         //
 291         // if (template.equals(anotherTemplate))
 292         // return true;
 293         // }
 294         //
 295         // return false;
 296         // }
 297         //
 298         // /**
 299         // * Removes a template to the set.
 300         // */
 301         // public void remove(Template template) {
 302         // fTemplates.remove(template);
 303         // sort();
 304         // }
 305         //
 306         /**
 307          * Empties the set.
 308          */
 309         public void clear() {
 310                 fIdentifierMap.clear();
 311                 // fTemplates.clear();
 312                 // sort();
 313         }
 314
 315         //
 316         // /**
 317         // * Returns all templates.
 318         // */
 319         // public Template[] getTemplates() {
 320         // return (Template[]) fTemplates.toArray(new Template[fTemplates.size()]);
 321         // }
 322
 323         /**
 324          * Returns all templates with a given name.
 325          */
 326         // public Template[] getTemplates(String name) {
 327         // ArrayList res= new ArrayList();
 328         // for (Iterator iterator= fTemplates.iterator(); iterator.hasNext();) {
 329         // Template curr= (Template) iterator.next();
 330         // if (curr.getName().equals(name)) {
 331         // res.add(curr);
 332         // }
 333         // }
 334         // return (Template[]) res.toArray(new Template[res.size()]);
 335         // }
 336         //
 337         // private void sort() {
 338         // fSortedTemplates= (Template[]) fTemplates.toArray(new
 339         // Template[fTemplates.size()]);
 340         // Arrays.sort(fSortedTemplates, fTemplateComparator);
 341         // }
 342         /**
 343          * @return
 344          */
 345         public HashMap getIdentifierMap() {
 346                 return fIdentifierMap;
 347         }
 348
 349 }