Method load

src/main/java/SaveDatabase.java:40–98

()

  }

  public void load()
    throws DBException, IOException
  {
    RandomAccessFile in = new RandomAccessFile(this.file, "r");
    try
    {
      byte[] buffer = new byte[40];
      int count = in.read(buffer, 0, 12);
      if (count != 12) {
        throw new DBException("Save header truncated");
      }
      String signature = new String(buffer, 0, 4);
      if (!signature.equals("RGMH")) {
        throw new DBException("Save signature is not valid");
      }
      int version = getInteger(buffer, 4);
      if (version != 1) {
        throw new DBException("Save version " + version + " is not supported");
      }
      this.dataOffset = getInteger(buffer, 8);

      in.seek(in.length() - 8L);
      count = in.read(buffer, 0, 8);
      if (count != 8) {
        throw new DBException("Save trailer truncated");
      }
      int resourceOffset = getInteger(buffer, 0);
      int resourceCount = getInteger(buffer, 4);
      in.seek(resourceOffset);

      for (int i = 0; i < resourceCount; i++) {
        count = in.read(buffer, 0, 4);
        if (count != 4) {
          throw new DBException("Resource table truncated");
        }
        int length = getInteger(buffer, 0);
        if (buffer.length < length) {
          buffer = new byte[length];
        }
        count = in.read(buffer, 0, length);
        if (count != length) {
          throw new DBException("Resource name truncated");
        }
        String name = new String(buffer, 0, length, "UTF-8");
        count = in.read(buffer, 0, 8);
        if (count != 8) {
          throw new DBException("Resource table truncated");
        }
        length = getInteger(buffer, 0);
        int offset = getInteger(buffer, 4);
        SaveEntry saveEntry = new SaveEntry(name, this.file, offset, length);
        this.entries.add(saveEntry);
        this.entryMap.put(saveEntry.getResourceName(), saveEntry);
      }
    } finally {
      if (in != null)
        in.close();
    }