bundles/org.simantics.scl.osgi/src/org/simantics/scl/osgi/internal/BundleDocumentationSource.java

   1 package org.simantics.scl.osgi.internal;
   2
   3 import java.io.IOException;
   4 import java.io.InputStream;
   5 import java.net.URL;
   6 import java.nio.charset.Charset;
   7 import java.util.Arrays;
   8
   9 import org.osgi.framework.Bundle;
  10
  11 public class BundleDocumentationSource {
  12     public static final Charset UTF8 = Charset.forName("UTF-8");
  13
  14     public final String documentationName;
  15     public final Bundle bundle;
  16     public final URL url;
  17
  18     public BundleDocumentationSource(String documentationName, Bundle bundle,
  19             URL url) {
  20         this.documentationName = documentationName;
  21         this.bundle = bundle;
  22         this.url = url;
  23     }
  24
  25     public String getText() {
  26         try {
  27             InputStream stream = url.openStream();
  28             try {
  29                 byte[] buffer = new byte[1024];
  30                 int pos = 0;
  31                 while(true) {
  32                     int count = stream.read(buffer, pos, buffer.length-pos);
  33                     if(count <= 0)
  34                         break;
  35                     pos += count;
  36                     if(pos == buffer.length)
  37                         buffer = Arrays.copyOf(buffer, buffer.length*2);
  38                 }
  39                 return new String(buffer, 0, pos, UTF8);
  40             } finally {
  41                 stream.close();
  42             }
  43         } catch(IOException e) {
  44             e.printStackTrace();
  45             return null;
  46         }
  47     }
  48 }