package com.smartor.common;
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/**
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* @author ls
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* @content
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* @date 2026/4/1
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*/
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public class PinYinUtil {
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/**
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* 获取拼音
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* @param name
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* @return
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*/
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public static String getpy(String name) {
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if (name == null || name.isEmpty()) return "";
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StringBuilder sb = new StringBuilder();
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for (char c : name.toCharArray()) {
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if (c >= '\u4e00' && c <= '\u9fa5') {
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sb.append(getFirstPinyinLetter(c));
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} else if (Character.isLetter(c)) {
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sb.append(Character.toLowerCase(c));
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}
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}
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return sb.toString();
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}
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/**
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* 根据汉字 GBK 编码区间返回对应拼音首字母（常用汉字覆盖率 > 99%）
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*/
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private static char getFirstPinyinLetter(char c) {
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try {
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byte[] bytes = String.valueOf(c).getBytes("GBK");
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if (bytes.length == 2) {
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int hb = bytes[0] & 0xFF;
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int lb = bytes[1] & 0xFF;
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int gbk = (hb << 8) | lb;
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if (gbk >= 0xB0A1 && gbk <= 0xB0C4) return 'a';
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if (gbk >= 0xB0C5 && gbk <= 0xB2C0) return 'b';
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if (gbk >= 0xB2C1 && gbk <= 0xB4ED) return 'c';
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if (gbk >= 0xB4EE && gbk <= 0xB6E9) return 'd';
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if (gbk >= 0xB6EA && gbk <= 0xB7A1) return 'e';
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if (gbk >= 0xB7A2 && gbk <= 0xB8C0) return 'f';
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if (gbk >= 0xB8C1 && gbk <= 0xB9FD) return 'g';
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if (gbk >= 0xB9FE && gbk <= 0xBBF6) return 'h';
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if (gbk >= 0xBBF7 && gbk <= 0xBFA5) return 'j';
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if (gbk >= 0xBFA6 && gbk <= 0xC0AB) return 'k';
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if (gbk >= 0xC0AC && gbk <= 0xC2E7) return 'l';
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if (gbk >= 0xC2E8 && gbk <= 0xC4C2) return 'm';
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if (gbk >= 0xC4C3 && gbk <= 0xC5B5) return 'n';
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if (gbk >= 0xC5B6 && gbk <= 0xC5BD) return 'o';
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if (gbk >= 0xC5BE && gbk <= 0xC6D9) return 'p';
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if (gbk >= 0xC6DA && gbk <= 0xC8BA) return 'q';
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if (gbk >= 0xC8BB && gbk <= 0xC8F5) return 'r';
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if (gbk >= 0xC8F6 && gbk <= 0xCBF0) return 's';
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if (gbk >= 0xCBFA && gbk <= 0xCDD9) return 't';
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if (gbk >= 0xCDDA && gbk <= 0xCEF3) return 'w';
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if (gbk >= 0xCEF4 && gbk <= 0xD188) return 'x';
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if (gbk >= 0xD1B9 && gbk <= 0xD4D0) return 'y';
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if (gbk >= 0xD4D1 && gbk <= 0xD7F9) return 'z';
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}
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} catch (Exception ignored) {
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}
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return c;
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}
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}
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