/**
   * Reads the public.xml file in data/res/values/ for a given resource folder and builds up a map
   * of public resources.
   *
   * <p>This map is a subset of the full resource map that only contains framework resources that
   * are public.
   *
   * @param logger a logger to report issues to
   */
  public void loadPublicResources(@Nullable ILogger logger) {
    IAbstractFolder valueFolder = getResFolder().getFolder(SdkConstants.FD_RES_VALUES);
    if (valueFolder.exists() == false) {
      return;
    }

    IAbstractFile publicXmlFile = valueFolder.getFile("public.xml"); // $NON-NLS-1$
    if (publicXmlFile.exists()) {
      Reader reader = null;
      try {
        reader =
            new BufferedReader(new InputStreamReader(publicXmlFile.getContents(), Charsets.UTF_8));
        KXmlParser parser = new KXmlParser();
        parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, false);
        parser.setInput(reader);

        ResourceType lastType = null;
        String lastTypeName = "";
        while (true) {
          int event = parser.next();
          if (event == XmlPullParser.START_TAG) {
            // As of API 15 there are a number of "java-symbol" entries here
            if (!parser.getName().equals("public")) { // $NON-NLS-1$
              continue;
            }

            String name = null;
            String typeName = null;
            for (int i = 0, n = parser.getAttributeCount(); i < n; i++) {
              String attribute = parser.getAttributeName(i);

              if (attribute.equals("name")) { // $NON-NLS-1$
                name = parser.getAttributeValue(i);
                if (typeName != null) {
                  // Skip id attribute processing
                  break;
                }
              } else if (attribute.equals("type")) { // $NON-NLS-1$
                typeName = parser.getAttributeValue(i);
              }
            }

            if (name != null && typeName != null) {
              ResourceType type = null;
              if (typeName.equals(lastTypeName)) {
                type = lastType;
              } else {
                type = ResourceType.getEnum(typeName);
                lastType = type;
                lastTypeName = typeName;
              }
              if (type != null) {
                ResourceItem match = null;
                Map<String, ResourceItem> map = mResourceMap.get(type);
                if (map != null) {
                  match = map.get(name);
                }

                if (match != null) {
                  List<ResourceItem> publicList = mPublicResourceMap.get(type);
                  if (publicList == null) {
                    // Pick initial size for the list to hold the public
                    // resources. We could just use map.size() here,
                    // but they're usually much bigger; for example,
                    // in one platform version, there are 1500 drawables
                    // and 1200 strings but only 175 and 25 public ones
                    // respectively.
                    int size;
                    switch (type) {
                      case STYLE:
                        size = 500;
                        break;
                      case ATTR:
                        size = 1000;
                        break;
                      case DRAWABLE:
                        size = 200;
                        break;
                      case ID:
                        size = 50;
                        break;
                      case LAYOUT:
                      case COLOR:
                      case STRING:
                      case ANIM:
                      case INTERPOLATOR:
                        size = 30;
                        break;
                      default:
                        size = 10;
                        break;
                    }
                    publicList = new ArrayList<ResourceItem>(size);
                    mPublicResourceMap.put(type, publicList);
                  }

                  publicList.add(match);
                } else {
                  // log that there's a public resource that doesn't actually
                  // exist?
                }
              } else {
                // log that there was a reference to a typo that doesn't actually
                // exist?
              }
            }
          } else if (event == XmlPullParser.END_DOCUMENT) {
            break;
          }
        }
      } catch (Exception e) {
        if (logger != null) {
          logger.error(e, "Can't read and parse public attribute list");
        }
      } finally {
        if (reader != null) {
          try {
            reader.close();
          } catch (IOException e) {
            // Nothing to be done here - we don't care if it closed or not.
          }
        }
      }
    }

    // put unmodifiable list for all res type in the public resource map
    // this will simplify access
    for (ResourceType type : ResourceType.values()) {
      List<ResourceItem> list = mPublicResourceMap.get(type);
      if (list == null) {
        list = Collections.emptyList();
      } else {
        list = Collections.unmodifiableList(list);
      }

      // put the new list in the map
      mPublicResourceMap.put(type, list);
    }
  }