Method readFile

src/main/java/KeyDatabase.java:31–103

()

  }

  private void readFile()
    throws DBException, IOException
  {
    RandomAccessFile in = new RandomAccessFile(this.file, "r");

    byte[] header = new byte[68];
    int count = in.read(header);
    if (count != header.length) {
      throw new DBException("KEY header length is incorrect");
    }
    String signature = new String(header, 0, 4);
    if (!signature.equals("KEY ")) {
      throw new DBException("KEY header signature is incorrect");
    }
    String version = new String(header, 4, 4);
    if (!version.equals("V1.1")) {
      throw new DBException("KEY header version " + version + " is not supported");
    }
    int fileCount = getInteger(header, 8);
    long fileOffset = getInteger(header, 20);
    int keyCount = getInteger(header, 12);
    long keyOffset = getInteger(header, 24);

    this.archiveNames = new ArrayList(fileCount);
    byte[] fileBuffer = new byte[12];
    byte[] nameBuffer = new byte[256];
    for (int i = 0; i < fileCount; i++) {
      in.seek(fileOffset);
      count = in.read(fileBuffer);
      if (count != fileBuffer.length) {
        throw new DBException("File table truncated");
      }
      long nameOffset = getInteger(fileBuffer, 4);
      int nameLength = getInteger(fileBuffer, 8);
      if (nameLength > nameBuffer.length) {
        nameBuffer = new byte[nameLength];
      }
      in.seek(nameOffset);
      in.read(nameBuffer, 0, nameLength);
      String fileName = new String(nameBuffer, 0, nameLength);
      this.archiveNames.add(fileName);

      fileOffset += 12L;
    }

    this.keyEntries = new ArrayList(keyCount);
    this.keyEntriesMap = new HashMap(keyCount);
    byte[] keyBuffer = new byte[26];
    for (int i = 0; i < keyCount; i++) {
      in.seek(keyOffset);
      count = in.read(keyBuffer);
      if (count != keyBuffer.length) {
        throw new DBException("Key table truncated");
      }
      int nameLength;
      for (nameLength = 1; (nameLength < 16) &&
        (keyBuffer[nameLength] != 0); nameLength++);
      String resourceName = new String(keyBuffer, 0, nameLength);