Any Translation for Sinhala language ?
http://en.wikipedia.org/wiki/Sinhala
http://sinhala.linux.lk/
http://www.omniglot.com/writing/sinhala.htm
http://locallanguages.lk/
It's pretty simple: Make a copy of english.php (or english_utf-8.php, if you need UTF-8), call it sinhala.php and start translating. You can switch your preferred language to Sinhala and translate it bit by bit.