Oauthd not supporting xml response for get access token call.

[vinodjoseph62]

I am trying to add oauth support for Concur . This provider gives a xml response for get access token call, but currently our oauth-response-parser supports json and url encoded formats. I am passing the format parameter in the concur's conf file. The response from concur is in this format

<Access_Token>
  <Instance_Url>https://www.concursolutions.com/</Instance_Url>
  <Token>*********access token********</Token>
  <Expiration_date>6/1/2017 2:24:46 PM</Expiration_date>
  <Refresh_Token>*******My Refresh token*****</Refresh_Token>
</Access_Token>

But after the providers gives a response in xml format oauthd gives the following error

{
  "body": {
    "<Access_Token>\r\n  <Instance_Url>https://www.concursolutions.com/</Instance_Url>\r\n  <Token>myAccessToken": "</Token>\r\n  <Expiration_date>6/1/2017 12:46:52 PM</Expiration_date>\r\n  <Refresh_Token>myRefreshToken</Refresh_Token>\r\n</Access_Token>",
    "stack": [
      "Error: Error during the 'access_token' step (access_token not found)",
      "    at OAuth2ResponseParser.OAuthResponseParser._setError (/usr/local/lib/node_modules/oauthd/bin/core/oauth/oauth-response-parser.js:97:20)",
      "    at /usr/local/lib/node_modules/oauthd/bin/core/oauth/oauth2-response-parser.js:48:35",
      "    at /usr/local/lib/node_modules/oauthd/bin/core/oauth/oauth-response-parser.js:53:18",
      "    at OAuth2ResponseParser.OAuthResponseParser.decode (/usr/local/lib/node_modules/oauthd/bin/core/oauth/oauth-response-parser.js:23:16)",
      "    at OAuth2ResponseParser.OAuthResponseParser.parse (/usr/local/lib/node_modules/oauthd/bin/core/oauth/oauth-response-parser.js:28:19)",
      "    at OAuth2ResponseParser.parse (/usr/local/lib/node_modules/oauthd/bin/core/oauth/oauth2-response-parser.js:38:51)",
      "    at Request._callback (/usr/local/lib/node_modules/oauthd/bin/core/oauth/oauth2.js:82:33)",
      "    at Request.self.callback (/usr/local/lib/node_modules/oauthd/node_modules/request/request.js:198:22)",
      "    at emitTwo (events.js:87:13)",
      "    at Request.emit (events.js:172:7)"
    ]
  }
}

Is there any way to solve this by parsing the xml, any solution to get access token for concur using oauthd.