コード例 #1
0
  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());
      }
      */
    }
  }