Salesforceで全角・半角の変換メソッド(二つ実現方法)

发表于2024年3月6日由济南幸融

https://qiita.com/bigyoujdb/items/7dd0ce7b6f6010db006d から転記

Unicodeのコードポイントを利用した下記のメソッドで半角・全角の変換が出来ました。

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public class ReplaceChar {
 
  /** 半角アルファベットを全角アルファベットに変換するメソッド */
    public static String repleceAlphabetHalfToFull(String str) {
 
        List<Integer> codePointList = new List<Integer>();
 
        for (integer i = 0; i < str.length(); i++) {
            // 文字のコードポイント取得
            Integer codePoint = str.codePointAt(i);
 
            if (65 <= codePoint && codePoint <= 90) {
            // 半角アルファベット大文字は全角大文字に変換してリストに追加
                codePoint += 65248;
                codePointList.add(codePoint);
            } else if (97 <= codePoint && codePoint <= 122) {
            // 半角アルファベット小文字は全角小文字に変換してリストに追加
                codePoint += 65248;
                codePointList.add(codePoint);
            } else {
            // 半角アルファベット以外はそのままリストに追加
                codePointList.add(codePoint);
            }
        }
 
        return String.fromCharArray(codePointList);
    }
}

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  /**
     * 全角→半角変換
     *
     * value 変換元文字列
     */
    private String convertFullToHalf(String value) {
        String result;
        // 変換内容がない場合
        if(String.isEmpty(value)) {
            result = '';
        }else{
            // 半角文字のみなら以降スキップ
            if (Pattern.matches('[ -~]+', value)) {
                result = value;
            }else{
                // 濁音、半濁音は2文字で1文字に変換されるため先に実施
                Map<String, String> fulltoHalfMap1 = new Map<String, String>();
                fulltoHalfMap1.put('ガ' , 'ｶﾞ');
                fulltoHalfMap1.put('ギ' , 'ｷﾞ');
                fulltoHalfMap1.put('グ' , 'ｸﾞ');
                fulltoHalfMap1.put('ゲ' , 'ｹﾞ');
                fulltoHalfMap1.put('ゴ' , 'ｺﾞ');
                fulltoHalfMap1.put('ザ' , 'ｻﾞ');
                fulltoHalfMap1.put('ジ' , 'ｼﾞ');
                fulltoHalfMap1.put('ズ' , 'ｽﾞ');
                fulltoHalfMap1.put('ゼ' , 'ｾﾞ');
                fulltoHalfMap1.put('ゾ' , 'ｿﾞ');
                fulltoHalfMap1.put('ダ' , 'ﾀﾞ');
                fulltoHalfMap1.put('ヂ' , 'ﾁﾞ');
                fulltoHalfMap1.put('ヅ' , 'ﾂﾞ');
                fulltoHalfMap1.put('デ' , 'ﾃﾞ');
                fulltoHalfMap1.put('ド' , 'ﾄﾞ');
                fulltoHalfMap1.put('バ' , 'ﾊﾞ');
                fulltoHalfMap1.put('ビ' , 'ﾋﾞ');
                fulltoHalfMap1.put('ブ' , 'ﾌﾞ');
                fulltoHalfMap1.put('ベ' , 'ﾍﾞ');
                fulltoHalfMap1.put('ボ' , 'ﾎﾞ');
                fulltoHalfMap1.put('パ' , 'ﾊﾟ');
                fulltoHalfMap1.put('ピ' , 'ﾋﾟ');
                fulltoHalfMap1.put('プ' , 'ﾌﾟ');
                fulltoHalfMap1.put('ペ' , 'ﾍﾟ');
                fulltoHalfMap1.put('ポ' , 'ﾎﾟ');
                fulltoHalfMap1.put('ヴ' , 'ｳﾞ');
 
                Map<String, String> fulltoHalfMap2 = new Map<String, String>();
                fulltoHalfMap2.put( '！',  '!' );
                fulltoHalfMap2.put( '”',  '"' );
                fulltoHalfMap2.put( '＃',  '#' );
                fulltoHalfMap2.put( '＄',  '$' );
                fulltoHalfMap2.put( '％',  '%' );
                fulltoHalfMap2.put( '＆',  '&' );
                fulltoHalfMap2.put(  '’',  '\'');
                fulltoHalfMap2.put( '（',  '(' );
                fulltoHalfMap2.put( '）',  ')' );
                fulltoHalfMap2.put( '＊',  '*' );
                fulltoHalfMap2.put( '＋',  '+' );
                fulltoHalfMap2.put( '，',   '' );
                fulltoHalfMap2.put( '−',  '-' );
                fulltoHalfMap2.put( '―',  '-' );
                fulltoHalfMap2.put( '．',  '.' );
                fulltoHalfMap2.put( '／',  '/' );
                fulltoHalfMap2.put( '０',  '0' );
                fulltoHalfMap2.put( '１',  '1' );
                fulltoHalfMap2.put( '２',  '2' );
                fulltoHalfMap2.put( '３',  '3' );
                fulltoHalfMap2.put( '４',  '4' );
                fulltoHalfMap2.put( '５',  '5' );
                fulltoHalfMap2.put( '６',  '6' );
                fulltoHalfMap2.put( '７',  '7' );
                fulltoHalfMap2.put( '８',  '8' );
                fulltoHalfMap2.put( '９',  '9' );
                fulltoHalfMap2.put( '：',  ':' );
                fulltoHalfMap2.put( '；',  ';' );
                fulltoHalfMap2.put( '＜',  '<' );
                fulltoHalfMap2.put( '＝',  '=' );
                fulltoHalfMap2.put( '＞',  '>' );
                fulltoHalfMap2.put( '？',  '?' );
                fulltoHalfMap2.put( '＠',  '@' );
                fulltoHalfMap2.put( 'Ａ',  'A' );
                fulltoHalfMap2.put( 'Ｂ',  'B' );
                fulltoHalfMap2.put( 'Ｃ',  'C' );
                fulltoHalfMap2.put( 'Ｄ',  'D' );
                fulltoHalfMap2.put( 'Ｅ',  'E' );
                fulltoHalfMap2.put( 'Ｆ',  'F' );
                fulltoHalfMap2.put( 'Ｇ',  'G' );
                fulltoHalfMap2.put( 'Ｈ',  'H' );
                fulltoHalfMap2.put( 'Ｉ',  'I' );
                fulltoHalfMap2.put( 'Ｊ',  'J' );
                fulltoHalfMap2.put( 'Ｋ',  'K' );
                fulltoHalfMap2.put( 'Ｌ',  'L' );
                fulltoHalfMap2.put( 'Ｍ',  'M' );
                fulltoHalfMap2.put( 'Ｎ',  'N' );
                fulltoHalfMap2.put( 'Ｏ',  'O' );
                fulltoHalfMap2.put( 'Ｐ',  'P' );
                fulltoHalfMap2.put( 'Ｑ',  'Q' );
                fulltoHalfMap2.put( 'Ｒ',  'R' );
                fulltoHalfMap2.put( 'Ｓ',  'S' );
                fulltoHalfMap2.put( 'Ｔ',  'T' );
                fulltoHalfMap2.put( 'Ｕ',  'U' );
                fulltoHalfMap2.put( 'Ｖ',  'V' );
                fulltoHalfMap2.put( 'Ｗ',  'W' );
                fulltoHalfMap2.put( 'Ｘ',  'X' );
                fulltoHalfMap2.put( 'Ｙ',  'Y' );
                fulltoHalfMap2.put( 'Ｚ',  'Z' );
                fulltoHalfMap2.put( '［',  '[' );
                fulltoHalfMap2.put(  '￥',  '\\');
                fulltoHalfMap2.put( '］',  ']' );
                fulltoHalfMap2.put( '＾',  '^' );
                fulltoHalfMap2.put( '＿',  '_' );
                fulltoHalfMap2.put( '‘',  '`' );
                fulltoHalfMap2.put( 'ａ',  'a' );
                fulltoHalfMap2.put( 'ｂ',  'b' );
                fulltoHalfMap2.put( 'ｃ',  'c' );
                fulltoHalfMap2.put( 'ｄ',  'd' );
                fulltoHalfMap2.put( 'ｅ',  'e' );
                fulltoHalfMap2.put( 'ｆ',  'f' );
                fulltoHalfMap2.put( 'ｇ',  'g' );
                fulltoHalfMap2.put( 'ｈ',  'h' );
                fulltoHalfMap2.put( 'ｉ',  'i' );
                fulltoHalfMap2.put( 'ｊ',  'j' );
                fulltoHalfMap2.put( 'ｋ',  'k' );
                fulltoHalfMap2.put( 'ｌ',  'l' );
                fulltoHalfMap2.put( 'ｍ',  'm' );
                fulltoHalfMap2.put( 'ｎ',  'n' );
                fulltoHalfMap2.put( 'ｏ',  'o' );
                fulltoHalfMap2.put( 'ｐ',  'p' );
                fulltoHalfMap2.put( 'ｑ',  'q' );
                fulltoHalfMap2.put( 'ｒ',  'r' );
                fulltoHalfMap2.put( 'ｓ',  's' );
                fulltoHalfMap2.put( 'ｔ',  't' );
                fulltoHalfMap2.put( 'ｕ',  'u' );
                fulltoHalfMap2.put( 'ｖ',  'v' );
                fulltoHalfMap2.put( 'ｗ',  'w' );
                fulltoHalfMap2.put( 'ｘ',  'x' );
                fulltoHalfMap2.put( 'ｙ',  'y' );
                fulltoHalfMap2.put( 'ｚ',  'z' );
                fulltoHalfMap2.put( '｛',  '{' );
                fulltoHalfMap2.put( '｜',  '|' );
                fulltoHalfMap2.put( '｝',  '}' );
                fulltoHalfMap2.put( '〜',  '~' );
                fulltoHalfMap2.put( '　',  ' ' );
                fulltoHalfMap2.put( '。',  '｡' );
                fulltoHalfMap2.put( '「',  '｢' );
                fulltoHalfMap2.put( '」',  '｣' );
                fulltoHalfMap2.put( '、',  '､' );
                fulltoHalfMap2.put( '・',  '･' );
                fulltoHalfMap2.put( 'ヲ',  'ｦ' );
                fulltoHalfMap2.put( 'ァ',  'ｧ' );
                fulltoHalfMap2.put( 'ィ',  'ｨ' );
                fulltoHalfMap2.put( 'ゥ',  'ｩ' );
                fulltoHalfMap2.put( 'ェ',  'ｪ' );
                fulltoHalfMap2.put( 'ォ',  'ｫ' );
                fulltoHalfMap2.put( 'ャ',  'ｬ' );
                fulltoHalfMap2.put( 'ュ',  'ｭ' );
                fulltoHalfMap2.put( 'ョ',  'ｮ' );
                fulltoHalfMap2.put( 'ッ',  'ｯ' );
                fulltoHalfMap2.put( 'ー',  'ｰ' );
                fulltoHalfMap2.put( 'ア',  'ｱ' );
                fulltoHalfMap2.put( 'イ',  'ｲ' );
                fulltoHalfMap2.put( 'ウ',  'ｳ' );
                fulltoHalfMap2.put( 'エ',  'ｴ' );
                fulltoHalfMap2.put( 'オ',  'ｵ' );
                fulltoHalfMap2.put( 'カ',  'ｶ' );
                fulltoHalfMap2.put( 'キ',  'ｷ' );
                fulltoHalfMap2.put( 'ク',  'ｸ' );
                fulltoHalfMap2.put( 'ケ',  'ｹ' );
                fulltoHalfMap2.put( 'コ',  'ｺ' );
                fulltoHalfMap2.put( 'サ',  'ｻ' );
                fulltoHalfMap2.put( 'シ',  'ｼ' );
                fulltoHalfMap2.put( 'ス',  'ｽ' );
                fulltoHalfMap2.put( 'セ',  'ｾ' );
                fulltoHalfMap2.put( 'ソ',  'ｿ' );
                fulltoHalfMap2.put( 'タ',  'ﾀ' );
                fulltoHalfMap2.put( 'チ',  'ﾁ' );
                fulltoHalfMap2.put( 'ツ',  'ﾂ' );
                fulltoHalfMap2.put( 'テ',  'ﾃ' );
                fulltoHalfMap2.put( 'ト',  'ﾄ' );
                fulltoHalfMap2.put( 'ナ',  'ﾅ' );
                fulltoHalfMap2.put( 'ニ',  'ﾆ' );
                fulltoHalfMap2.put( 'ヌ',  'ﾇ' );
                fulltoHalfMap2.put( 'ネ',  'ﾈ' );
                fulltoHalfMap2.put( 'ノ',  'ﾉ' );
                fulltoHalfMap2.put( 'ハ',  'ﾊ' );
                fulltoHalfMap2.put( 'ヒ',  'ﾋ' );
                fulltoHalfMap2.put( 'フ',  'ﾌ' );
                fulltoHalfMap2.put( 'ヘ',  'ﾍ' );
                fulltoHalfMap2.put( 'ホ',  'ﾎ' );
                fulltoHalfMap2.put( 'マ',  'ﾏ' );
                fulltoHalfMap2.put( 'ミ',  'ﾐ' );
                fulltoHalfMap2.put( 'ム',  'ﾑ' );
                fulltoHalfMap2.put( 'メ',  'ﾒ' );
                fulltoHalfMap2.put( 'モ',  'ﾓ' );
                fulltoHalfMap2.put( 'ヤ',  'ﾔ' );
                fulltoHalfMap2.put( 'ユ',  'ﾕ' );
                fulltoHalfMap2.put( 'ヨ',  'ﾖ' );
                fulltoHalfMap2.put( 'ラ',  'ﾗ' );
                fulltoHalfMap2.put( 'リ',  'ﾘ' );
                fulltoHalfMap2.put( 'ル',  'ﾙ' );
                fulltoHalfMap2.put( 'レ',  'ﾚ' );
                fulltoHalfMap2.put( 'ロ',  'ﾛ' );
                fulltoHalfMap2.put( 'ワ',  'ﾜ' );
                fulltoHalfMap2.put( 'ン',  'ﾝ' );
                fulltoHalfMap2.put( '゛',  'ﾞ' );
                fulltoHalfMap2.put( '゜',  'ﾟ' );
                // エスケープ必要文字
                Set<String> escapeChars = new Set<String>();
                escapeChars.add('\\');
                escapeChars.add('*');
                escapeChars.add('+');
                escapeChars.add('.');
                escapeChars.add('?');
                escapeChars.add('{');
                escapeChars.add('}');
                escapeChars.add('(');
                escapeChars.add(')');
                escapeChars.add('[');
                escapeChars.add(']');
                escapeChars.add('^');
                escapeChars.add('$');
                escapeChars.add('|');
                escapeChars.add('/');
 
                for (String key : fulltoHalfMap1.keySet()) {
                    if (value.contains(key)) {
                        value = value.replaceAll(key, fulltoHalfMap1.get(key));
                    }
                }
 
                for (String key : fulltoHalfMap2.keySet()) {
                    if (value.contains(key)) {
                        String tempKey = key;
                        if (escapeChars.contains(tempKey)) {
                            tempKey = '\\' + tempKey;
                        }
                        value = value.replaceAll(tempKey, fulltoHalfMap2.get(key));
                    }
                }
                String comma = '，';
                if(value.contains(comma)){
                    value = value.replaceAll(comma, '');
                }
                result = value;
            }
        }
        return result;
    }

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