Examples of java.nio.charset.CharsetEncoder.canEncode()

java.nio.charset.CharsetEncoder.canEncode()
Check if given character can be encoded by this encoder. Note that this method can change the internal status of this encoder, so it should not be called when another encode process is ongoing, otherwise it will throw IllegalStateException. This method can be overriden for performance improvement. @param c the given encoder @return true if given character can be encoded by this encoder @throws IllegalStateException if another encode process is ongoing so that current internal status is neigher RESET or FLUSH

                            accum.append("&quot;");
                        else
                            accum.append(c);
                        break;
                    default:
                        if (encoder.canEncode(c))
                            accum.append(c);
                        else if (map.containsKey(c))
                            accum.append('&').append(map.get(c)).append(';');
                        else
                            accum.append("&#x").append(Integer.toHexString(codePoint)).append(';');

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                        else
                            accum.append("&#x").append(Integer.toHexString(codePoint)).append(';');
                }
            } else {
                final String c = new String(Character.toChars(codePoint));
                if (encoder.canEncode(c))
                    accum.append(c);
                else
                    accum.append("&#x").append(Integer.toHexString(codePoint)).append(';');
            }
        }

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        }
    }


    private boolean canAsciiEncode(String string) {
        CharsetEncoder asciiEncoder = Charset.forName("US-ASCII").newEncoder();
        return asciiEncoder.canEncode(string);
    }
}

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    protected boolean canEncode(String s) {
        final CharsetEncoder encoder =
            Charset.forName(System.getProperty("file.encoding")).newEncoder();
        char[] chars = s.toCharArray();
        for (int i=0; i<chars.length; i++) {
            if(!encoder.canEncode(chars[i])) {
                return false;
            }
        }
        return true;
    }

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    public static LogicalPredicate<Character> in(Charset charset) {
        final CharsetEncoder encoder = charset.newEncoder();
        return new LogicalPredicate<Character>() {
            @Override
            public boolean matches(Character other) {
                return encoder.canEncode(other);
            }
        };
    }


    public static LogicalPredicate<Character> in(final String characters) {

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            int count = new Random().nextInt(128) + 128;
            while (count != 0) {
                char c = (char) new Random().nextInt(Character.MAX_VALUE);


                if (charsetEncoder.canEncode(c)) {
                    baos.write(charsetEncoder.encode(CharBuffer.wrap(new char[] { c })).array());
                    count--;
                }
            }

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     * If the description cannot be encoded using the current encoding change the encoder
     */
    public void write(ByteArrayOutputStream tagBuffer) {
        CharsetEncoder encoder = Charset.forName(TextEncoding.CHARSET_ISO_8859_1).newEncoder();
        String origUrl = getUrlLink();
        if (!encoder.canEncode(origUrl)) {
            //ALL W Frames only support ISO-8859-1 for the url itself, if unable to encode let us assume
            //the link just needs url encoding
            setUrlLink(encodeURL(origUrl));


            //We still cant convert so just set log error and set to blank to allow save to continue

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            //ALL W Frames only support ISO-8859-1 for the url itself, if unable to encode let us assume
            //the link just needs url encoding
            setUrlLink(encodeURL(origUrl));


            //We still cant convert so just set log error and set to blank to allow save to continue
            if (!encoder.canEncode(getUrlLink())) {
                //logger.warning(ErrorMessage.MP3_UNABLE_TO_ENCODE_URL.getMsg(origUrl));
                setUrlLink("");
            }
            //it was ok, just note the modification made
            else {

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        //need to worry about LE,BE at this point it makes no difference)
        byte textEncoding = this.getBody().getTextEncoding();
        String charSetName = TextEncoding.getInstanceOf().getValueForId(textEncoding);
        CharsetEncoder encoder = Charset.forName(charSetName).newEncoder();


        if (encoder.canEncode((String) value)) {
            return true;
        } else {
//            logger.finest("Failed Trying to decode" + value + "with" + encoder.toString());
            return false;
        }

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    protected boolean canEncode(String s) {
        final CharsetEncoder encoder =
            Charset.forName(System.getProperty("file.encoding")).newEncoder();
        char[] chars = s.toCharArray();
        for (int i=0; i<chars.length; i++) {
            if(!encoder.canEncode(chars[i])) {
                return false;
            }
        }
        return true;
    }

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