Regex Replace Escape character c#

Question

This is html:

<font color="#000fff" size="1" face="Arial">Genuine Windows® 7 Home Premium (64-bit)</font>

This is what I wanted to convert:

[color="#000fff"]Genuine Windows® 7 Home Premium (64-bit)[/color]

This is what I tried:

var post = Regex.Replace(post, "<font color=\"([a-fA-F0-9\\#]+)\">(.*?)</font>",
                                 m => "[color=\"" + m.Groups[1].Value + "\"]" + m.Groups[2].Value + "[/color]");

Its not matching.

Answer 1

No, because you haven't catered for the size="1" face="Arial" . Try this:

"<font color=\"([a-fA-F0-9\\#]+)\"[^>]*>(.*?)</font>"

(Note the addition of [^>]* to capture everything else in the opening font tag)

Answer 2

Your fix is:

using System;
using System.Text.RegularExpressions;

public class Test
{
  public static void Main()
  {
    string post = "<font color=\"#000fff\" size=\"1\" face=\"Arial\">Genuine Windows® 7 Home Premium (64-bit)</font>";
    post = Regex.Replace(post, "<font color=\"([a-fA-F0-9\\#]+)\"[^>]*>(.*?)</font>", 
      m => "[color=\"" + m.Groups[1].Value + "\"]" + m.Groups[2].Value + "[/color]");
    Console.WriteLine(post);
  }
}

Test this code here .

Answer 3

Update: Performance bottlenecks fixed. See it in action .

Find:

<font.*?color="([^"]*)"[^>]*>([^<]*)</font>

Note: This assumes color attribute will definitely exist.

Replace:

[color=$1]$2[/color]