83 lines
2.8 KiB
C#
83 lines
2.8 KiB
C#
using System.Collections.Generic;
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namespace CustomOpenAddins
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{
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/// <summary>
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/// 数字匹配工具类
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/// </summary>
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public static class NumberMatcher
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{
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/// <summary>
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/// 匹配中文数字的正则表达式（零到九，包含大写）
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/// </summary>
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private const string ChineseNumberPattern = "[零一二三四五六七八九壹贰叁肆伍陆柒捌玖两]";
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/// <summary>
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/// 匹配希腊数字的正则表达式（Ⅰ到Ⅹ）
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/// </summary>
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private const string GreekNumberPattern = "[ⅠⅡⅢⅣⅤⅥⅦⅧⅨ]";
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/// <summary>
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/// 检查字符串是否是中文数字
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/// </summary>
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/// <param name="input">输入字符串</param>
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/// <returns>是否匹配</returns>
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public static bool IsChineseNumber(string input)
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{
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if (string.IsNullOrEmpty(input))
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return false;
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return System.Text.RegularExpressions.Regex.IsMatch(input, $"^{ChineseNumberPattern}$");
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}
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/// <summary>
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/// 检查字符串是否是希腊数字
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/// </summary>
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/// <param name="input">输入字符串</param>
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/// <returns>是否匹配</returns>
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public static bool IsGreekNumber(string input)
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{
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if (string.IsNullOrEmpty(input))
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return false;
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return System.Text.RegularExpressions.Regex.IsMatch(input, $"^{GreekNumberPattern}$");
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}
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/// <summary>
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/// 从字符串中提取第一个匹配的数字（中文或希腊数字）
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/// </summary>
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/// <param name="input">输入字符串</param>
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/// <returns>匹配到的数字字符串，未匹配返回null</returns>
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public static string ExtractFirstNumber(string input)
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{
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if (string.IsNullOrEmpty(input))
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return null;
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var pattern = $"({ChineseNumberPattern}|{GreekNumberPattern})";
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var match = System.Text.RegularExpressions.Regex.Match(input, pattern);
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return match.Success ? match.Value : null;
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}
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/// <summary>
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/// 从字符串中提取所有匹配的数字（中文或希腊数字）
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/// </summary>
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/// <param name="input">输入字符串</param>
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/// <returns>匹配到的数字字符串集合</returns>
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public static IEnumerable<string> ExtractAllNumbers(string input)
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{
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if (string.IsNullOrEmpty(input))
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yield break;
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var pattern = $"({ChineseNumberPattern}|{GreekNumberPattern})";
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var matches = System.Text.RegularExpressions.Regex.Matches(input, pattern);
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foreach (System.Text.RegularExpressions.Match match in matches)
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{
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yield return match.Value;
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}
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}
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}
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}
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