Class UTF32Reader

All Implemented Interfaces:
Closeable, AutoCloseable, Readable

public final class UTF32Reader extends BaseReader
Since JDK does not come with UTF-32/UCS-4, let's implement a simple decoder to use.
  • Field Details

    • mBigEndian

      protected final boolean mBigEndian
    • mXml11

      protected boolean mXml11
    • mSurrogate

      protected char mSurrogate
      Although input is fine with full Unicode set, Java still uses 16-bit chars, so we may have to split high-order chars into surrogate pairs.
    • mCharCount

      protected int mCharCount
      Total read character count; used for error reporting purposes
    • mByteCount

      protected int mByteCount
      Total read byte count; used for error reporting purposes
  • Constructor Details

    • UTF32Reader

      public UTF32Reader(ReaderConfig cfg, InputStream in, byte[] buf, int ptr, int len, boolean recycleBuffer, boolean isBigEndian)
  • Method Details

    • setXmlCompliancy

      public void setXmlCompliancy(int xmlVersion)
      Description copied from class: BaseReader
      Method that can be called to indicate the xml conformance used when reading content using this reader. Some of the character validity checks need to be done at reader level, and sometimes they depend on xml level (for example, xml 1.1 has new linefeeds and both more and less restricted characters).
      Specified by:
      setXmlCompliancy in class BaseReader
    • read

      public int read(char[] cbuf, int start, int len) throws IOException
      Specified by:
      read in class Reader
      Throws:
      IOException
    • reportUnexpectedEOF

      private void reportUnexpectedEOF(int gotBytes, int needed) throws IOException
      Throws:
      IOException
    • reportInvalid

      private void reportInvalid(int value, int offset, String msg) throws IOException
      Throws:
      IOException
    • loadMore

      private boolean loadMore(int available) throws IOException
      Parameters:
      available - Number of "unused" bytes in the input buffer
      Returns:
      True, if enough bytes were read to allow decoding of at least one full character; false if EOF was encountered instead.
      Throws:
      IOException