The R Project SVN – R – Diff – /branches/R-gcontext/doc/html/search/IndexStream.java

   Project:
   JAVA Source file for the class IndexStream
   COPYRIGHT (C), 1998, Thomas Baier
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
-  ALL RIGHTS RESERVED.
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   $Source: /scratch/CVS-ARCHIVE/R/doc/html/search/IndexStream.java,v $
-  $Revision: 1.1 $
+  $Revision: 1.2 $
-  $Date: 1998/05/15 10:38:09 $
+  $Date: 1999/03/04 17:15:18 $
   $Author: leisch $
 ==============================================================================*/
     PARAMS:
     THROWS:
     RETURNS:   void
     HISTORY:   98-05-08: created
+-05-15: new static member for include directive
   ----------------------------------------------------------------------------*/
   public IndexStream (URL inputURL)
+  {
     // init the instance data
     iInputURL = inputURL;
     PARAMS:
     THROWS:
     RETURNS:   void
     HISTORY:   98-05-08: created
+-05-15: catch all exception (e.g. security violation)
+-06-07: correctly trace exceptions
+-11-14: replaced deprecated DataInputStream.readLine()
   ----------------------------------------------------------------------------*/
   public void readStream ()
+  {
     try {
       InputStream stream = iInputURL.openStream ();
+      // according to JDK 1.1.3 docs, now use BufferedReader. Here the docs:
+      //
+      // As of JDK 1.1, the preferred way to read lines of text is via the
+      // BufferedReader.readLine() method. Programs that use the
+      // DataInputStream class to read lines can be converted to use the
+      // BufferedReader class by replacing code of the form
-      DataInputStream is = new DataInputStream (stream);
+      //   DataInputStream d = new DataInputStream(in);
+      // with
+      //   BufferedReader d = new BufferedReader(new InputStreamReader(in));
+      BufferedReader is = new BufferedReader (new InputStreamReader (stream));
       // now read and parse all lines of the file.
       String line = is.readLine ();
       while (line != null) {
       is.close ();
       stream.close ();
     } catch (IOException exc) {
       // there's some error, ignore it!
+    } catch (Exception exc) {
+      Tracer.write ("exction opening " + iInputURL.toString () + "\n");
+      Tracer.write ("string: " + exc.toString () + "\n");
+      if (exc.getMessage () != null) {
+	Tracer.write ("info: " + exc.getMessage () + "\n");
+      }
+    }
     return;
+  }
     PARAMS:
     THROWS:
     RETURNS:   void
     HISTORY:   98-05-08: created
+-05-15: handle include directive
   ----------------------------------------------------------------------------*/
   public void parseKeyValue (String line)
+  {
     int index = line.indexOf (":");
       value = line.substring (index + 1).trim ();
     } catch (IndexOutOfBoundsException exc) {
       line = "";
+    }
+    // 98-05-15: handle include directive
+    if (key.equalsIgnoreCase (cIncludeDirective)) {
+      // the value is assumed to be the URL of the included file
+      try {
+	URL includedURL = new URL (iInputURL,value);
+	Tracer.write ("URL to be included expands to " +
+		      includedURL.toString () + "\n");
+	IndexStream idxStream = new IndexStream (includedURL);
+	if (idxStream != null) {
+	  Value copyValue = idxStream.popEntry ();
+	  while (copyValue != null) {
+	    iData.addElement (copyValue);
+	    copyValue = idxStream.popEntry ();
+	  }
+	}
+	idxStream = null;
+      } catch (MalformedURLException exc) {
+	// ignore errors
+	Tracer.write ("error parsing include URL " + value + "\n");
+	return;
+      }
+    } else {
-    // create the value and add it to the vector
+      // create the value and add it to the vector
-    Value newValue = new Value (key,value);
+      Value newValue = new Value (key,value);
-    iData.addElement (newValue);
+      iData.addElement (newValue);
+    }
     return;
+  }
   /*============================================================================
                                 Static Data
   ============================================================================*/
+  private static final String cIncludeDirective = "include";
+}
 /*==============================================================================
   HISTORY:
   $Log: IndexStream.java,v $
-  Revision 1.1  1998/05/15 10:38:09  leisch
+  Revision 1.2  1999/03/04 17:15:18  leisch
+  various bugfixes
+  Revision 1.1.4.1  1999/03/02 15:19:55  leisch
+  search used only kewords, no titles
+  Revision 1.2  1998/05/15 22:08:57  baier
-  New: Search Engine
+  handle include
   Revision 1.1  1998/05/10 02:43:37  baier
   Initial revision

The R Project SVN R

(root)/branches/R-gcontext/doc/html/search/IndexStream.java @ 28362 – Rev 1230 → 3765