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