*/
package org.codelibs.fess.suggest.normalizer;

/**
 * An interface for normalizing text.
 * Implementations of this interface should provide a method to normalize
 * a given text based on the specified field and optional language parameters.
 */
public interface Normalizer {
    /**
     * Normalizes the given text.
     * @param text The text to normalize
     * @param field The field name

        for (final Normalizer normalizer : normalizers) {
            tmp = normalizer.normalize(tmp, field, langs);
            if (tmp == null) {
                return null;
            }
        }
        return tmp;
    }

    /**
     * Adds a normalizer to the chain.
     * @param normalizer The normalizer to add.
     * @throws IllegalArgumentException if normalizer is null
     */

        HankakuKanaToZenkakuKana normalizer = new HankakuKanaToZenkakuKana();

        String result = normalizer.normalize("ｱｲｳｴｵ", "field");

        assertEquals("アイウエオ", result);
    }

    @Test
    public void test_voicedSounds() throws Exception {
        HankakuKanaToZenkakuKana normalizer = new HankakuKanaToZenkakuKana();

        String result = normalizer.normalize("ｶﾞｷﾞｸﾞｹﾞｺﾞ", "field");

        return this;
    }

    /**
     * Sets the normalizer.
     * @param normalizer The normalizer.
     * @return This builder instance.
     */
    public SuggesterBuilder normalizer(final Normalizer normalizer) {
        this.normalizer = normalizer;
        return this;
    }

    /**
     * Sets the analyzer.
     * @param analyzer The analyzer.

        final String normalizedWord = normalizer.normalize(elevateWord.getElevateWord(), "");
        final List<String> normalizedReadings =
                elevateWord.getReadings().stream().map(reading -> normalizer.normalize(reading, "")).collect(Collectors.toList());
        final ElevateWord normalized = new ElevateWord(normalizedWord, elevateWord.getBoost(), normalizedReadings, elevateWord.getFields(),

     */
    public ReadingConverter getReadingConverter() {
        return readingConverter;
    }

    /**
     * Returns the Normalizer instance.
     * @return The Normalizer instance.
     */
    public Normalizer getNormalizer() {
        return normalizer;
    }

    /**
     * Creates a default SuggestIndexer instance.
     * @return A SuggestIndexer instance.
     */

                chain.add(new LangAnalyzerNormalizer(lang));
            }
            normalizer = chain;
        }
        return normalizer.normalize(text, field);
    }

    /**
     * Language-specific analyzer normalizer.
     */
    protected class LangAnalyzerNormalizer implements Normalizer {
        /**
         * The language used for normalization.
         */
        protected final String lang;

        String result = normalizer.normalize("ＡＢＣＤＥＦＧＨＩＪＫＬＭＮＯＰＱＲＳＴＵＶＷＸＹＺ", "field");

        assertEquals("ABCDEFGHIJKLMNOPQRSTUVWXYZ", result);
    }

    @Test
    public void test_mixedAlphabet() throws Exception {
        FullWidthToHalfWidthAlphabetNormalizer normalizer = new FullWidthToHalfWidthAlphabetNormalizer();

    }

    private UrlNormalizer normalizer;

    UrlNormalizingPostProcessor(UrlNormalizer normalizer) {
        this.normalizer = normalizer;
    }

    @Override
    public Object execute(String expression, Object value) {
        if (value != null && URL_EXPRESSIONS.contains(expression)) {
            return normalizer.normalize(value.toString());
        }

        return null;
    }

 *
 * <p>Example usage:</p>
 * <pre>
 * ICUNormalizer normalizer = new ICUNormalizer("Any-Latin; NFD; [:Nonspacing Mark:] Remove; NFC");
 * String normalizedText = normalizer.normalize("text to normalize", "field");
 * </pre>
 *
 * @see com.ibm.icu.text.Transliterator
 */
public class ICUNormalizer implements Normalizer {
    /** The transliterator used for normalization. */