How to develop a parser to call XML files into my websit

Dear friends,

Can anybody help me, how to develop a parser in wordpress to call XML format files into my website from a desired ftp location, Below is the sample format I have received from the agency. Please help me, as I am new to Word Press Community.

Regards,

https://www.YaHind.Com
https://yahind.com/newsportal/

(Sample file attached with its details below)
I am enclosing some XML test file for your reference and also mentioning below the naming format and different category we use, you have to develop a parser at your end to call these files into your website from a desired ftp location.

We follow yyyymmdd-hhmmss.xml (20080218-130137.xml) naming format for our XML files.

We have two main <cats> ‘India’ & ‘International’
With ‘India’ <cats> we always associate ‘National’ as default <subcats> and other
related <subcats> are separated by a comma

For Example
if a story is only of National Issue then

<cats>India</cats>
<subcats>National</subcats>

is used

otherwise if it related to business then

<cats>India</cats>
<subcats>National,Business</subcats>

and with travel & Entertainment related

<cats>India</cats>
<subcats>National,Entertainment,Travel</subcats>

List of <subcats>, we use with <cats>India</cats>:

Art – Culture
Business
Diaspora
Education
Entertainment
Health
National
Politics
Religion
Sports
Sci-Tech
Travel

With International <cats> we use either of listed <subcats>

<cats>International</cats>
<subcats>Nepal</subcats>

<cats>International</cats>
<subcats>Australasia</subcats>

List of <subcats>, we use with <cats>International</cats>:
Africa
Americas
Asia
Australasia
Europe
Gulf-Middle East