c# - 复杂的 "Contains"字符串比较

Question

我正在开发一个 C# 4.5 应用程序，我需要一个函数来返回 true 以进行以下比较:

"bla LéOnAr d/o bla".ComplexContains("leonardo")

换句话说，我需要 string.Compare(str1, str2, CultureInfo.InvariantCulture, CompareOptions.IgnoreCase | CompareOptions.IgnoreSymbols | CompareOptions.IgnoreNonSpace) 来检查“包含!”

有人能帮忙吗？

Answer 1

您可以使用适当的CompareInfo 然后CompareInfo.IndexOf(string, string, CompareOptions)并对照-1 检查结果。示例:

using System;
using System.Globalization;

class Program
{
    static void Main()
    {
        var compareInfo = CultureInfo.InvariantCulture.CompareInfo;
        var options = CompareOptions.IgnoreCase | 
            CompareOptions.IgnoreSymbols |
            CompareOptions.IgnoreNonSpace;

        var haystack = "bla Lé OnAr d/o bla";
        var needle = "leonardo";

        var index = compareInfo.IndexOf(haystack, needle, options);
        Console.WriteLine(index); // 4
    }
}

或者方法形式:

private static bool ComplexContains(string source, string value)
{
    var index = CultureInfo.InvariantCulture.CompareInfo.IndexOf
        (source, value, CompareOptions.IgnoreCase | 
         CompareOptions.IgnoreSymbols | CompareOptions.IgnoreNonSpace);
    return index != -1;
}