Question

I am working on string maniplations using regex.

   Source: string value = @"/webdav/MyPublication/Building%20Blocks/folder0/folder1/content_1.xml";

   output required:
           Foldername: folder1
           content name: content
           folderpath:/webdav/MyPublication/Building%20Blocks/folder0/folder1/

I am new to this, can any one say how it can be done using regex.
Thank you.

Answer 1

The rules you need seem to be the following:

• Folder name = last string preceding a ‘/’ character but not containing a ‘/’ character
• content name = last string not containing a ‘/’ character until (but not including) a ‘_’ or ‘.’ character
• folderpath = same as folder name except it can contain a ‘/’ character

Assuming the rules above – you probably want this code:

string value = @"/webdav/MyPublication/Building%20Blocks/folder0/folder1/content_1.xml";

var foldernameMatch = Regex.Match(value, @"([^/]+)/[^/]+$");
var contentnameMatch = Regex.Match(value, @"([^/_\.]+)[_\.][^/]*$");
var folderpathMatch = Regex.Match(value, @"(.*/)[^/]*$");
if (foldernameMatch.Success && contentnameMatch.Success && folderpathMatch.Success)
{
    var foldername = foldernameMatch.Groups[1].Value;
    var contentname = contentnameMatch.Groups[1].Value;
    var folderpath = folderpathMatch.Groups[1].Value;
}
else
{
  // handle bad input
}

Note that you can also combine these to become one large regex, although it can be more cumbersome to follow (if it weren’t already):

var matches = Regex.Match(value, @"(.*/)([^/]+)/([^/_\.]+)[_\.][^/]*$");
if (matches.Success)
{
    var foldername = matches.Groups[2].Value;
    var contentname = matches.Groups[3].Value;
    var folderpath = matches.Groups[1].Value + foldername + "/";
}
else
{
    // handle bad input
}