src/main/java/eu/svjatoslav/meviz/htmlindexer/WebIndexer.java

   1 package eu.svjatoslav.meviz.htmlindexer;
   2
   3 import eu.svjatoslav.meviz.htmlindexer.layouts.MixedLayout;
   4 import eu.svjatoslav.meviz.htmlindexer.metadata.Dimension;
   5 import eu.svjatoslav.meviz.htmlindexer.metadata.DirectoryMetadata;
   6 import eu.svjatoslav.meviz.htmlindexer.metadata.fileTypes.AbstractFile;
   7 import eu.svjatoslav.meviz.htmlindexer.metadata.fileTypes.Picture;
   8
   9 import java.io.BufferedInputStream;
  10 import java.io.IOException;
  11 import java.io.ObjectInputStream;
  12 import java.io.UnsupportedEncodingException;
  13 import java.net.URL;
  14 import java.net.URLEncoder;
  15 import java.util.List;
  16
  17 public class WebIndexer extends AbstractIndexer {
  18
  19     private static final int METADATA_LOAD_TRY_COUNT = 10;
  20     private final String globalPrefix;
  21     private final String jspPath;
  22
  23     public WebIndexer(final String globalPrefix, final String jspPath) {
  24         this.globalPrefix = globalPrefix;
  25         this.jspPath = jspPath;
  26     }
  27
  28     @Override
  29     public void compileHtml(final Layout layout,
  30                             final DirectoryMetadata directory)
  31             throws UnsupportedEncodingException {
  32         super.compileHtml(layout, directory);
  33     }
  34
  35     @Override
  36     public String getDirectoryUrl(final AbstractFile directory,
  37                                   final IndexingContext context) {
  38
  39         try {
  40             return jspPath + context.getLocalUrl() + "/"
  41                     + URLEncoder.encode(directory.fileName, "UTF-8");
  42         } catch (final UnsupportedEncodingException e) {
  43             throw new RuntimeException(e);
  44         }
  45     }
  46
  47     public String getHtml(String requestPath) throws
  48             IOException, ClassNotFoundException {
  49
  50         if (requestPath == null)
  51             requestPath = "";
  52
  53         if (requestPath.equals("/"))
  54             requestPath = "";
  55
  56         final MixedLayout layout = new MixedLayout();
  57         final IndexingContext context = new IndexingContext(globalPrefix,
  58                 requestPath);
  59         layout.init("Photos", context.getLocalPathComponents(), this, context);
  60
  61         final DirectoryMetadata directory = getMetadataForPath(requestPath);
  62
  63         compileHtml(layout, directory);
  64
  65         return layout.getHtml(false, false, directory);
  66     }
  67
  68     public DirectoryMetadata getMetadataForPath(final String requestPath)
  69             throws ClassNotFoundException, IOException {
  70
  71         final String urlString = globalPrefix +
  72                 Utils.urlEncode(requestPath) +
  73                 "/.thumbnails/metadata_6.dat";
  74
  75         IOException exception = null;
  76
  77         for (int i = 0; i < METADATA_LOAD_TRY_COUNT; i++)
  78             try {
  79
  80                 final BufferedInputStream in = new BufferedInputStream(new URL(
  81                         urlString).openStream());
  82
  83                 final ObjectInputStream oin = new ObjectInputStream(in);
  84                 final DirectoryMetadata directory = (DirectoryMetadata) oin
  85                         .readObject();
  86                 in.close();
  87
  88                 return directory;
  89             } catch (final IOException e) {
  90                 exception = e;
  91             }
  92
  93         throw exception;
  94     }
  95
  96     @Override
  97     public String getParentDirectoryUrl(final IndexingContext context) {
  98         final StringBuilder result = new StringBuilder();
  99
 100         result.append(jspPath);
 101
 102         final List<String> components = context.getLocalPathComponents();
 103
 104         for (final String pathComponent : components.subList(0,
 105                 components.size() - 1)) {
 106             result.append("/");
 107             result.append(pathComponent);
 108         }
 109
 110         return result.toString();
 111     }
 112
 113     @Override
 114     public String getThumbnailUrl(final Picture picture,
 115                                   final Dimension desiredDimension, final IndexingContext context) {
 116
 117         // in case thumbnail size was equal to original, then return original
 118         // file path
 119         if (picture.getDimensions().equals(desiredDimension))
 120             return context.getGlobalUrl() + context.getLocalUrl() + "/"
 121                     + picture.fileName;
 122
 123         final String thumbnailFileName = picture
 124                 .getRelativeThumbnailFileName(desiredDimension);
 125
 126         return context.getGlobalUrl() + context.getLocalUrl() + "/"
 127                 + Constants.THUMBNAILS_DIRECTORY_NAME + "/"
 128                 + Utils.urlEncode(thumbnailFileName);
 129     }
 130
 131 }