我有两个要比较的字符串变量。
var compareA = "something.somethingelse.another.something2"
var compareB = "*.another.something2"
我想比较一下,结果是:正确。
var compareC = "something.somethingelse.*"
与compareA相比,结果也应该是:True。
当然,两个变量都可以包含 N 个点这一事实也使任务变得复杂。 你会如何为他开始?
我尝试过这个:
static void Main(string[] args)
{
var A = CompareString("*.something", "other.Another.something"); //I need this is true!
var B = CompareString("something.Value.Other.*", "something.Value.Other.SomethingElse"); //I need this is true
var C = CompareString("something.Value.Other", "something.Value.Other.OtherElse"); //I need this is False
var D = CompareString("*.somethingElse", "other.another.Value"); //I Need this is false
Console.WriteLine("It is need True: {0}", A);
Console.WriteLine("It is need True: {0}", B);
Console.WriteLine("It is need False: {0}", C);
Console.WriteLine("It is need False: {0}", D);
}
private static bool CompareString(string first, string second)
{
var resume = false;
var firstSplit = first.Split('.');
var secondSplit = second.Split('.');
foreach (var firstItem in firstSplit)
{
foreach (var secondItem in secondSplit)
{
if (firstItem == "*" || secondItem == "*" || string.Equals(firstItem.ToLower(), secondItem.ToLower()))
{
resume = true;
}
else
{
resume = false;
}
}
}
return resume;
}
结果很好,但我认为可以采取不同的做法,并且推理可能是错误的。
假设如下:
您应该能够使用以下内容
private bool HasMatch(string textToSearch, string searchText)
{
if (textToSearch.Length < searchText.Length) return false;
var wildCardIndex = searchText.IndexOf('*');
if (wildCardIndex == -1)
{
return textToSearch.Equals(searchText, StringComparison.InvariantCultureIgnoreCase);
}
else
{
if (wildCardIndex == 0)
{
var text = searchText.TrimStart('*');
return textToSearch.EndsWith(text, StringComparison.InvariantCultureIgnoreCase);
}
if (wildCardIndex == (searchText.Length - 1))
{
var text = searchText.TrimEnd('*');
return textToSearch.StartsWith(text, StringComparison.InvariantCultureIgnoreCase);
}
}
return false;
}