比较两个不带参数值的 URL 端点

Question

假设我有这两个网址：

1. var str1 = "/rest/api/projects/{projectName}/statuses"

2. var str2 = "/rest/api/projects/XXX/statuses"

如图所示，它们仅在参数定义和实际值上有所不同。 但是，我想在比较它们时跳过参数名称/值检查。

因此，比较这两个 URL，应该返回 true：

string.Equals(str1, str2) == true

Answer 1

经过一些非生产性的研究，我自己弄清楚了逻辑。

解决方案

public static class UrlExtensions
{
    public static bool CompareUrlsExceptParameters(this string urlToCompareFrom, string urlToCompareWith)
    {
        string pattern = @"\{[^/]*?\}"; // find out the {parameter} location in the main URL

        var match = Regex.Match(urlToCompareFrom, pattern);

        if (match.Success) // found parameters in {}
        {
            var parameterName = match.Success ? match.Value : string.Empty;

            var index = match.Index;
            var replaceEndInd = urlToCompareWith.IndexOf('/', index);

            if (replaceEndInd == -1) // this might be the case when {parameter} found at the end of URL
            {
                replaceEndInd = urlToCompareWith.Length;
            }

            var parameterValue = urlToCompareWith.Substring(index, replaceEndInd - index);

            var resultUrl = urlToCompareFrom.Replace(parameterName, parameterValue);

            if (Regex.Match(resultUrl, pattern).Success) // contains more parameter(s)
            {
                return CompareUrlsExceptParameters(resultUrl, urlToCompareWith);
            }

            var isEqual = string.Equals(resultUrl, urlToCompareWith, StringComparison.OrdinalIgnoreCase); // compare the strings ignoring case

            return isEqual;
        }

        return urlToCompareFrom.Contains(urlToCompareWith); // nothing found use ordinary comparison
    }
}

---

使用/测试

Assert.True("rest/api/project/{projectName}".CompareUrlsExceptParameters("rest/api/project/XXX"));
Assert.True("rest/api/project/{projectName}/statuses".CompareUrlsExceptParameters("rest/api/project/XXX/statuses"));
Assert.True("rest/api/project/{projectName}/statuses/{statusId}".CompareUrlsExceptParameters("rest/api/project/XXX/statuses/1"));

Assert.False("rest/api/project/{projectName}/statuses/{statusId}/other".CompareUrlsExceptParameters("rest/api/project/XXX/statuses/1"));
Assert.False("rest/api/project/{projectName}/statuses/{statusId}".CompareUrlsExceptParameters("rest/api/project/XXX/statuses/1/other"));
Assert.False("rest/api/project/{projectName}/resources".CompareUrlsExceptParameters("rest/api/project/XXX/statuses/1/other"));
Assert.False("rest/api/project/resources".CompareUrlsExceptParameters("rest/api/project/statuses"));