Examples of sun.text.normalizer.UCharacterIterator

sun.text.normalizer.UCharacterIterator
Abstract class that defines an API for iteration on text objects.This is an interface for forward and backward iteration and random access into a text object. Forward iteration is done with post-increment and backward iteration is done with pre-decrement semantics, while the java.text.CharacterIterator interface methods provided forward iteration with "pre-increment" and backward iteration with pre-decrement semantics. This API is more efficient for forward iteration over code points. The other major difference is that this API can do both code unit and code point iteration, java.text.CharacterIterator can only iterate over code units and is limited to BMP (0 - 0xFFFF) @author Ram @stable ICU 2.4

        StringBuffer dest;
        
        // step 2
        // perform the nameprep operation; flag ALLOW_UNASSIGNED is used here
        if (!isASCII) {
            UCharacterIterator iter = UCharacterIterator.getInstance(label);
            try {
                dest = namePrep.prepare(iter, flag);
            } catch (java.text.ParseException e) {
                throw new IllegalArgumentException(e);
            }

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        if(!isASCII){
            // step 2
            // perform the nameprep operation; flag ALLOW_UNASSIGNED is used here
            try {
                UCharacterIterator iter = UCharacterIterator.getInstance(label);
                dest = namePrep.prepare(iter, flag);
            } catch (Exception e) {
                // toUnicode never fails; if any step fails, return the input string
                return label;
            }

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        if(!isASCII){
            // step 2
            // perform the nameprep operation; flag ALLOW_UNASSIGNED is used here
            try {
                UCharacterIterator iter = UCharacterIterator.getInstance(label);
                dest = namePrep.prepare(iter, flag);
            } catch (Exception e) {
                // toUnicode never fails; if any step fails, return the input string
                return label;
            }

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   */
  public static String nodePrep(String node)
  {
    //TODO add http://www.icu-project.org/icu4j_faq.html for java 1.4 compatibility and non sun java
    if(node == null) return null;
    UCharacterIterator iter = UCharacterIterator.getInstance(node);
        try {
            return nodePrep.prepare(iter, IDN.USE_STD3_ASCII_RULES).toString();
        } catch (java.text.ParseException e) {
            throw new IllegalArgumentException(e);
        }

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   * @throws a IllegalArgumentException if it is an illegal Resource
   */
  public static String resourcePrep(String resource)
  {
    if(resource == null) return null;
    UCharacterIterator iter = UCharacterIterator.getInstance(resource);
        try {
            return resourcePrep.prepare(iter, IDN.USE_STD3_ASCII_RULES).toString();
        } catch (java.text.ParseException e) {
            throw new IllegalArgumentException(e);
        }

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        StringBuffer dest;


        // step 2
        // perform the nameprep operation; flag ALLOW_UNASSIGNED is used here
        if (!isASCII) {
            UCharacterIterator iter = UCharacterIterator.getInstance(label);
            try {
                dest = namePrep.prepare(iter, flag);
            } catch (java.text.ParseException e) {
                throw new IllegalArgumentException(e);
            }

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        if(!isASCII){
            // step 2
            // perform the nameprep operation; flag ALLOW_UNASSIGNED is used here
            try {
                UCharacterIterator iter = UCharacterIterator.getInstance(label);
                dest = namePrep.prepare(iter, flag);
            } catch (Exception e) {
                // toUnicode never fails; if any step fails, return the input string
                return label;
            }

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            normOut = normalize(mapOut);
        }


        int ch;
        char result;
        UCharacterIterator iter = UCharacterIterator.getInstance(normOut);
        Values val = new Values();
        int direction=UCharacterDirection.CHAR_DIRECTION_COUNT,
            firstCharDir=UCharacterDirection.CHAR_DIRECTION_COUNT;
        int rtlPos=-1, ltrPos=-1;
        boolean rightToLeft=false, leftToRight=false;


        while((ch=iter.nextCodePoint())!= UCharacterIterator.DONE){
            result = getCodePointValue(ch);
            getValues(result,val);


            if(val.type == PROHIBITED ){
                throw new ParseException("A prohibited code point was found in the input" +
                                         iter.getText(), val.value);
            }


            direction = UCharacter.getDirection(ch);
            if(firstCharDir == UCharacterDirection.CHAR_DIRECTION_COUNT){
                firstCharDir = direction;
            }
            if(direction == UCharacterDirection.LEFT_TO_RIGHT){
                leftToRight = true;
                ltrPos = iter.getIndex()-1;
            }
            if(direction == UCharacterDirection.RIGHT_TO_LEFT || direction == UCharacterDirection.RIGHT_TO_LEFT_ARABIC){
                rightToLeft = true;
                rtlPos = iter.getIndex()-1;
            }
        }
        if(checkBiDi == true){
            // satisfy 2
            if( leftToRight == true && rightToLeft == true){
                throw new ParseException("The input does not conform to the rules for BiDi code points." +
                                         iter.getText(),
                                         (rtlPos>ltrPos) ? rtlPos : ltrPos);
             }


            //satisfy 3
            if( rightToLeft == true &&
                !((firstCharDir == UCharacterDirection.RIGHT_TO_LEFT || firstCharDir == UCharacterDirection.RIGHT_TO_LEFT_ARABIC) &&
                (direction == UCharacterDirection.RIGHT_TO_LEFT || direction == UCharacterDirection.RIGHT_TO_LEFT_ARABIC))
              ){
                throw new ParseException("The input does not conform to the rules for BiDi code points." +
                                         iter.getText(),
                                         (rtlPos>ltrPos) ? rtlPos : ltrPos);
            }
        }
        return normOut;

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    }


    private static byte[] prepare(byte[] src, StringPrep prep)
                throws ParseException, UnsupportedEncodingException{
        String s = new String(src, "UTF-8");
        UCharacterIterator iter =  UCharacterIterator.getInstance(s);
        StringBuffer out = prep.prepare(iter,StringPrep.DEFAULT);
        return out.toString().getBytes("UTF-8");
    }

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            int i= findStringIndex(special_prefixes, prefixString);
            String suffixString = s.substring(index+1, s.length());
            if(i>-1 && !suffixString.equals("")){
                throw new ParseException("Suffix following a special index", -1);
            }
            UCharacterIterator prefix = UCharacterIterator.getInstance(prefixString);
            UCharacterIterator suffix = UCharacterIterator.getInstance(suffixString);
            out.append(prep.nfsmxp.prepare(prefix,StringPrep.DEFAULT));
            out.append(AT_SIGN); // add the delimiter
            out.append(prep.nfsmxs.prepare(suffix, StringPrep.DEFAULT));
        }else{
            UCharacterIterator iter = UCharacterIterator.getInstance(s);
            out.append(prep.nfsmxp.prepare(iter,StringPrep.DEFAULT));


        }
       return out.toString().getBytes("UTF-8");
    }

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