C# Convert Relative to Absolute Links in HTML String

Question

I\'m mirroring some internal websites for backup purposes. As of right now I basically use this c# code:

System.Net.WebClient client = new System.Net.WebCli         


        

Answer 1

I know this is an older question, but I figured out how to do it with a fairly simple regex. It works well for me. It handles http/https and also root-relative and current directory-relative.

var host = "http://www.google.com/";
var baseUrl = host + "images/";
var html = "
";
var regex = "(?<=(?:href|src)=\")(?!https?://)(?[^\"]+)";
html = Regex.Replace(
    html,
    regex,
    match => match.Groups["url"].Value.StartsWith("/")
        ? host + match.Groups["url"].Value.Substring(1)
        : baseUrl + match.Groups["url"].Value);