中文轉換成拼音

C# 中文轉換成拼音

利用微軟的Microsoft.PinYinConverter能夠查詢出單個漢字的讀音，

然後利用這個類通過排列組合就能得出詞語中有多音情況下的集合。

代碼

/// <summary>
/// 得到首字母
/// </summary>
/// <param name="text">中文文本</param>
/// <returns>中文文本的拼音首字母</returns>
public static string[] GetInitials(string text) => string.IsNullOrEmpty(text) ? null :
            new List<ChineseChar>(text.Where(ch => Regex.IsMatch(ch.ToString(), @"[\u4e00-\u9fbb]")).Select(ch => new ChineseChar(ch))).
                Select(cc => cc.Pinyins.Where(pinyin => !string.IsNullOrEmpty(pinyin)).Select(pinyin => pinyin[0]).Distinct())
                .Aggregate((IEnumerable<IEnumerable<char>>)new IEnumerable<char>[] { Enumerable.Empty<char>() },
                (accumulator, sequence) =>
                    from accseq in accumulator
                    from item in sequence
                    select accseq.Concat(new[] { item }),
                (result) => result.Select(r => new string(r.ToArray()))).ToArray();
                
/// <summary>
/// 得到拼音
/// </summary>
/// <param name="text">中文文本</param>
/// <returns>中文文本的拼音</returns>
public static string[] GetPinYin(string text) => string.IsNullOrEmpty(text) ? null :
            new List<ChineseChar>(text.Where(ch => Regex.IsMatch(ch.ToString(), @"[\u4e00-\u9fbb]")).Select(ch => new ChineseChar(ch))).
                Select(cc => cc.Pinyins.Where(pinyin => !string.IsNullOrEmpty(pinyin)).Select(pinyin => pinyin.Substring(0, pinyin.Length - 1)).Distinct())
                .Aggregate((IEnumerable<IEnumerable<string>>)new IEnumerable<string>[] { Enumerable.Empty<string>() },
                (accumulator, sequence) =>
                    from accseq in accumulator
                    from item in sequence
                    select accseq.Concat(new[] { item }),
                (result) => result.Select(r => string.Join(" ", r.Select(s => string.Concat(s[0], s.Substring(1).ToLower()))))).ToArray();