public String readAsString(Charset charset) throws CharacterCodingException { int unreadSize = totalBytesUnread(); if (unreadSize > 0) { CharsetDecoder decoder = charset .newDecoder() .onMalformedInput(CodingErrorAction.REPLACE) .onUnmappableCharacter(CodingErrorAction.REPLACE); CharBuffer charbuffer = CharBuffer.allocate(unreadSize); ByteBuffer buf = null; while (prepareRead() != -1) { buf = currentReadChunk.readToNioBuffer(); boolean endOfInput = (prepareRead() == -1); CoderResult result = decoder.decode(buf, charbuffer, endOfInput); if (endOfInput) { if (!result.isUnderflow()) { result.throwException(); } } } CoderResult result = decoder.flush(charbuffer); if (buf.hasRemaining()) { throw new IllegalStateException("There's a bug here, buffer wasn't read fully."); } if (!result.isUnderflow()) result.throwException(); charbuffer.flip(); String str; if (charbuffer.hasArray()) { int len = charbuffer.remaining(); char[] ch = charbuffer.array(); if (len != ch.length) { ch = ArrayUtils.subarray(ch, 0, len); } str = StringCharArrayAccessor.createString(ch); } else { str = charbuffer.toString(); } return str; } return null; }