/**
   * Read a 'n' bytes from buffer into a String where n is the framesize - offset so therefore
   * cannot use this if there are other objects after it because it has no delimiter.
   *
   * <p>Must take into account the text encoding defined in the Encoding Object ID3 Text Frames
   * often allow multiple strings seperated by the null char appropriate for the encoding.
   *
   * @param arr this is the buffer for the frame
   * @param offset this is where to start reading in the buffer for this field
   * @throws NullPointerException
   * @throws IndexOutOfBoundsException
   */
  public void readByteArray(byte[] arr, int offset) throws InvalidDataTypeException {
    logger.finest("Reading from array from offset:" + offset);

    // Get the Specified Decoder
    String charSetName = getTextEncodingCharSet();
    CharsetDecoder decoder = Charset.forName(charSetName).newDecoder();
    decoder.reset();

    // Decode sliced inBuffer
    ByteBuffer inBuffer;
    // #302 [dallen] truncating array manually since the decoder.decode() does not honor the offset
    // in the in buffer
    byte[] truncArr = new byte[arr.length - offset];
    System.arraycopy(arr, offset, truncArr, 0, truncArr.length);
    inBuffer = ByteBuffer.wrap(truncArr);

    CharBuffer outBuffer = CharBuffer.allocate(arr.length - offset);
    CoderResult coderResult = decoder.decode(inBuffer, outBuffer, true);
    if (coderResult.isError()) {
      logger.warning("Decoding error:" + coderResult.toString());
    }
    decoder.flush(outBuffer);
    outBuffer.flip();

    // If using UTF16 with BOM we then search through the text removing any BOMs that could exist
    // for multiple values, BOM could be Big Endian or Little Endian
    if (charSetName.equals(TextEncoding.CHARSET_UTF_16)) {
      value = outBuffer.toString().replace("\ufeff", "").replace("\ufffe", "");
    } else {
      value = outBuffer.toString();
    }
    // SetSize, important this is correct for finding the next datatype
    setSize(arr.length - offset);
    logger.config("Read SizeTerminatedString:" + value + " size:" + size);
  }
Пример #2
0
 static boolean check(CharsetDecoder dec, byte[] bytes, boolean direct, int[] flow) {
   int inPos = flow[0];
   int inLen = flow[1];
   int outPos = flow[2];
   int outLen = flow[3];
   int expedInPos = flow[4];
   int expedOutPos = flow[5];
   CoderResult expedCR = (flow[6] == 0) ? CoderResult.UNDERFLOW : CoderResult.OVERFLOW;
   ByteBuffer bbf;
   CharBuffer cbf;
   if (direct) {
     bbf = ByteBuffer.allocateDirect(inPos + bytes.length);
     cbf = ByteBuffer.allocateDirect((outPos + outLen) * 2).asCharBuffer();
   } else {
     bbf = ByteBuffer.allocate(inPos + bytes.length);
     cbf = CharBuffer.allocate(outPos + outLen);
   }
   bbf.position(inPos);
   bbf.put(bytes).flip().position(inPos).limit(inPos + inLen);
   cbf.position(outPos);
   dec.reset();
   CoderResult cr = dec.decode(bbf, cbf, false);
   if (cr != expedCR || bbf.position() != expedInPos || cbf.position() != expedOutPos) {
     System.out.printf("Expected(direct=%5b): [", direct);
     for (int i : flow) System.out.print(" " + i);
     System.out.println(
         "]  CR=" + cr + ", inPos=" + bbf.position() + ", outPos=" + cbf.position());
     return false;
   }
   return true;
 }
  static void testMixed(Charset cs) throws Throwable {
    CharsetDecoder dec =
        cs.newDecoder()
            .onMalformedInput(CodingErrorAction.REPLACE)
            .onUnmappableCharacter(CodingErrorAction.REPLACE);
    CharsetEncoder enc =
        cs.newEncoder()
            .onMalformedInput(CodingErrorAction.REPLACE)
            .onUnmappableCharacter(CodingErrorAction.REPLACE);
    List<Integer> cps = new ArrayList<>(0x10000);
    int off = 0;
    int cp = 0;
    while (cp < 0x10000) {
      if (enc.canEncode((char) cp)) {
        cps.add(cp);
      }
      cp++;
    }
    Collections.shuffle(cps);
    char[] bmpCA = new char[cps.size()];
    for (int i = 0; i < cps.size(); i++) bmpCA[i] = (char) (int) cps.get(i);
    String bmpStr = new String(bmpCA);
    // getBytes(csn);
    byte[] bmpBA = bmpStr.getBytes(cs.name());
    ByteBuffer bf = enc.reset().encode(CharBuffer.wrap(bmpCA));
    byte[] baNIO = new byte[bf.limit()];
    bf.get(baNIO, 0, baNIO.length);
    if (!Arrays.equals(bmpBA, baNIO)) {
      throw new RuntimeException("getBytes(csn) failed  -> " + cs.name());
    }

    // getBytes(cs);
    bmpBA = bmpStr.getBytes(cs);
    if (!Arrays.equals(bmpBA, baNIO))
      throw new RuntimeException("getBytes(cs) failed  -> " + cs.name());

    // new String(csn);
    String strSC = new String(bmpBA, cs.name());
    String strNIO = dec.reset().decode(ByteBuffer.wrap(bmpBA)).toString();
    if (!strNIO.equals(strSC)) {
      throw new RuntimeException("new String(csn) failed  -> " + cs.name());
    }

    // new String(cs);
    strSC = new String(bmpBA, cs);
    if (!strNIO.equals(strSC)) throw new RuntimeException("new String(cs) failed  -> " + cs.name());
  }
Пример #4
0
 static char[] decode(byte[] bb, Charset cs, boolean testDirect, Time t) throws Exception {
   String csn = cs.name();
   CharsetDecoder dec = cs.newDecoder();
   ByteBuffer bbf;
   CharBuffer cbf;
   if (testDirect) {
     bbf = ByteBuffer.allocateDirect(bb.length);
     cbf = ByteBuffer.allocateDirect(bb.length * 2).asCharBuffer();
     bbf.put(bb);
   } else {
     bbf = ByteBuffer.wrap(bb);
     cbf = CharBuffer.allocate(bb.length);
   }
   CoderResult cr = null;
   long t1 = System.nanoTime() / 1000;
   for (int i = 0; i < iteration; i++) {
     bbf.rewind();
     cbf.clear();
     dec.reset();
     cr = dec.decode(bbf, cbf, true);
   }
   long t2 = System.nanoTime() / 1000;
   t.t = (t2 - t1) / iteration;
   if (cr != CoderResult.UNDERFLOW) {
     System.out.println("DEC-----------------");
     int pos = bbf.position();
     System.out.printf(
         "  cr=%s, bbf.pos=%d, bb[pos]=%x,%x,%x,%x%n",
         cr.toString(),
         pos,
         bb[pos++] & 0xff,
         bb[pos++] & 0xff,
         bb[pos++] & 0xff,
         bb[pos++] & 0xff);
     throw new RuntimeException("Decoding err: " + csn);
   }
   char[] cc = new char[cbf.position()];
   cbf.flip();
   cbf.get(cc);
   return cc;
 }
Пример #5
0
 @Override
 int read(final TextInput ti) throws IOException {
   int c = -1;
   while (++c < 4) {
     final int ch = ti.readByte();
     if (ch < 0) break;
     cache[c] = (byte) ch;
     outc.position(0);
     inc.position(0);
     inc.limit(c + 1);
     csd.reset();
     final CoderResult cr = csd.decode(inc, outc, true);
     if (cr.isMalformed()) continue;
     // return character
     int i = 0;
     final int os = outc.position();
     for (int o = 0; o < os; ++o) i |= outc.get(o) << (o << 3);
     return i;
   }
   return c == 0 ? -1 : invalid();
 }
Пример #6
0
 static CoderResult decodeCR(byte[] bb, Charset cs, boolean testDirect) throws Exception {
   CharsetDecoder dec = cs.newDecoder();
   ByteBuffer bbf;
   CharBuffer cbf;
   if (testDirect) {
     bbf = ByteBuffer.allocateDirect(bb.length);
     cbf = ByteBuffer.allocateDirect(bb.length * 2).asCharBuffer();
     bbf.put(bb).flip();
   } else {
     bbf = ByteBuffer.wrap(bb);
     cbf = CharBuffer.allocate(bb.length);
   }
   CoderResult cr = null;
   for (int i = 0; i < iteration; i++) {
     bbf.rewind();
     cbf.clear();
     dec.reset();
     cr = dec.decode(bbf, cbf, true);
   }
   return cr;
 }
  /**
   * Writes any remaining output to the output buffer and resets the converter to its initial state.
   *
   * @param output char array to receive flushed output.
   * @param outStart start writing to output array at this offset.
   * @param outEnd stop writing to output array at this offset (exclusive).
   * @exception MalformedInputException if the output to be flushed contained a partial or invalid
   *     multibyte character sequence. flush will write what it can to the output buffer and reset
   *     the converter before throwing this exception. An additional call to flush is not required.
   * @exception ConversionBufferFullException if output array is filled before all the output can be
   *     flushed. flush will write what it can to the output buffer and remember its state. An
   *     additional call to flush with a new output buffer will conclude the operation.
   */
  public int flush(char[] output, int outStart, int outEnd)
      throws MalformedInputException, ConversionBufferFullException {

    byteOff = charOff = 0;
    if (outStart >= outEnd || outStart >= output.length) throw new ConversionBufferFullException();
    if (dst != null && dst.array() == output) dst.position(outStart).limit(outEnd);
    else dst = CharBuffer.wrap(output, outStart, outEnd - outStart);

    CoderResult cr = null;
    try {
      if (src != null) cr = decoder.decode((ByteBuffer) src.clear(), dst, true);
      assert !cr.isUnmappable();
      if (cr.isMalformed()) {
        badInputLength = cr.length();
        reset();
        throw new MalformedInputException();
      }
    } catch (IllegalStateException ise) {
      if (src != null) cr = decoder.reset().decode(src, dst, true);
    }
    try {
      cr = decoder.flush(dst);
    } catch (Exception e) {
      assert false;
    } finally {
      byteOff = 0;
      charOff = dst.position();
      src = null;
    }
    if (cr.isOverflow()) throw new ConversionBufferFullException();

    // Return the length written to the output buffer
    if (cr.isUnderflow()) {
      int written = charOff - outStart;
      reset();
      return written;
    }
    assert false;
    return -1; // should be never reached
  }
Пример #8
0
  /**
   * Decode file charset.
   *
   * @param f File to process.
   * @return File charset.
   * @throws IOException in case of error.
   */
  public static Charset decode(File f) throws IOException {
    SortedMap<String, Charset> charsets = Charset.availableCharsets();

    String[] firstCharsets = {
      Charset.defaultCharset().name(), "US-ASCII", "UTF-8", "UTF-16BE", "UTF-16LE"
    };

    Collection<Charset> orderedCharsets = U.newLinkedHashSet(charsets.size());

    for (String c : firstCharsets)
      if (charsets.containsKey(c)) orderedCharsets.add(charsets.get(c));

    orderedCharsets.addAll(charsets.values());

    try (RandomAccessFile raf = new RandomAccessFile(f, "r")) {
      FileChannel ch = raf.getChannel();

      ByteBuffer buf = ByteBuffer.allocate(4096);

      ch.read(buf);

      buf.flip();

      for (Charset charset : orderedCharsets) {
        CharsetDecoder decoder = charset.newDecoder();

        decoder.reset();

        try {
          decoder.decode(buf);

          return charset;
        } catch (CharacterCodingException ignored) {
        }
      }
    }

    return Charset.defaultCharset();
  }
  /**
   * Converts an array of bytes containing characters in an external encoding into an array of
   * Unicode characters. This method allows a buffer by buffer conversion of a data stream. The
   * state of the conversion is saved between calls to convert. Among other things, this means
   * multibyte input sequences can be split between calls. If a call to convert results in an
   * exception, the conversion may be continued by calling convert again with suitably modified
   * parameters. All conversions should be finished with a call to the flush method.
   *
   * @return the number of bytes written to output.
   * @param input byte array containing text to be converted.
   * @param inStart begin conversion at this offset in input array.
   * @param inEnd stop conversion at this offset in input array (exclusive).
   * @param output character array to receive conversion result.
   * @param outStart start writing to output array at this offset.
   * @param outEnd stop writing to output array at this offset (exclusive).
   * @exception MalformedInputException if the input buffer contains any sequence of bytes that is
   *     illegal for the input character set.
   * @exception UnknownCharacterException for any character that that cannot be converted to
   *     Unicode. Thrown only when converter is not in substitution mode.
   * @exception ConversionBufferFullException if output array is filled prior to converting all the
   *     input.
   */
  public int convert(byte[] input, int inStart, int inEnd, char[] output, int outStart, int outEnd)
      throws UnknownCharacterException, MalformedInputException, ConversionBufferFullException {

    byteOff = inStart;
    charOff = outStart;
    // throw exceptions compatible to legacy ByteToCharXxx converters
    if (inStart >= inEnd) return 0;
    if (inStart >= input.length) throw new ArrayIndexOutOfBoundsException(inStart);
    if (outStart >= outEnd || outStart >= output.length) throw new ConversionBufferFullException();

    if (src != null && src.array() == input) src.position(inStart).limit(inEnd);
    else src = ByteBuffer.wrap(input, inStart, inEnd - inStart);
    if (dst != null && dst.array() == output) dst.position(outStart).limit(outEnd);
    else dst = CharBuffer.wrap(output, outStart, outEnd - outStart);

    CoderResult cr;
    try {
      cr = decoder.decode(src, dst, false);
    } catch (IllegalStateException ise) {
      cr = decoder.reset().decode(src, dst, false);
    } finally {
      byteOff = src.position();
      charOff = dst.position();
    }
    if (cr.isUnmappable()) {
      badInputLength = cr.length();
      throw new UnknownCharacterException();
    }
    if (cr.isMalformed()) {
      badInputLength = cr.length();
      throw new MalformedInputException();
    }
    if (cr.isOverflow()) throw new ConversionBufferFullException();

    // Return the length written to the output buffer
    if (cr.isUnderflow()) return charOff - outStart;
    return -1; // should be never reached
  }
 /** Resets converter to its initial state. */
 public void reset() {
   super.reset();
   decoder.reset();
   src = null;
   dst = null;
 }
  static void test(Charset cs, char[] bmpCA, byte[] sbBA) throws Throwable {
    String bmpStr = new String(bmpCA);
    CharsetDecoder dec =
        cs.newDecoder()
            .onMalformedInput(CodingErrorAction.REPLACE)
            .onUnmappableCharacter(CodingErrorAction.REPLACE);
    CharsetEncoder enc =
        cs.newEncoder()
            .onMalformedInput(CodingErrorAction.REPLACE)
            .onUnmappableCharacter(CodingErrorAction.REPLACE);

    // getBytes(csn);
    byte[] baSC = bmpStr.getBytes(cs.name());
    ByteBuffer bf = enc.reset().encode(CharBuffer.wrap(bmpCA));
    byte[] baNIO = new byte[bf.limit()];
    bf.get(baNIO, 0, baNIO.length);
    if (!Arrays.equals(baSC, baNIO))
      throw new RuntimeException("getBytes(csn) failed  -> " + cs.name());

    // getBytes(cs);
    baSC = bmpStr.getBytes(cs);
    if (!Arrays.equals(baSC, baNIO))
      throw new RuntimeException("getBytes(cs) failed  -> " + cs.name());

    // new String(csn);
    String strSC = new String(sbBA, cs.name());
    String strNIO = dec.reset().decode(ByteBuffer.wrap(sbBA)).toString();

    if (!strNIO.equals(strSC))
      throw new RuntimeException("new String(csn) failed  -> " + cs.name());

    // new String(cs);
    strSC = new String(sbBA, cs);
    if (!strNIO.equals(strSC)) throw new RuntimeException("new String(cs) failed  -> " + cs.name());

    // encode unmappable surrogates
    if (enc instanceof sun.nio.cs.ArrayEncoder && cs.contains(Charset.forName("ASCII"))) {
      if (cs.name().equals("UTF-8")
          || // utf8 handles surrogates
          cs.name().equals("CESU-8")) // utf8 handles surrogates
      return;
      enc.replaceWith(new byte[] {(byte) 'A'});
      sun.nio.cs.ArrayEncoder cae = (sun.nio.cs.ArrayEncoder) enc;

      String str = "ab\uD800\uDC00\uD800\uDC00cd";
      byte[] ba = new byte[str.length() - 2];
      int n = cae.encode(str.toCharArray(), 0, str.length(), ba);
      if (n != 6 || !"abAAcd".equals(new String(ba, cs.name())))
        throw new RuntimeException("encode1(surrogates) failed  -> " + cs.name());

      ba = new byte[str.length()];
      n = cae.encode(str.toCharArray(), 0, str.length(), ba);
      if (n != 6 || !"abAAcd".equals(new String(ba, 0, n, cs.name())))
        throw new RuntimeException("encode2(surrogates) failed  -> " + cs.name());
      str = "ab\uD800B\uDC00Bcd";
      ba = new byte[str.length()];
      n = cae.encode(str.toCharArray(), 0, str.length(), ba);
      if (n != 8 || !"abABABcd".equals(new String(ba, 0, n, cs.name())))
        throw new RuntimeException("encode3(surrogates) failed  -> " + cs.name());
      /* sun.nio.cs.ArrayDeEncoder works on the assumption that the
         invoker (StringCoder) allocates enough output buf, utf8
         and double-byte coder does not check the output buffer limit.
      ba = new byte[str.length() - 1];
      n = cae.encode(str.toCharArray(), 0, str.length(), ba);
      if (n != 7 || !"abABABc".equals(new String(ba, 0, n, cs.name()))) {
          throw new RuntimeException("encode4(surrogates) failed  -> "
                                     + cs.name());
      }
      */
    }
  }
Пример #12
0
 public void reset() {
   myDecoder.reset();
 }