Find / Detect / Format GetText strings used in files around

Actually there are two questions:

1. is there a way to recursively pick up all GetText strings in current directory and all child dirs programmatically (using exec maybe or some)?
2. after i passed through the files within xgettext i got warning such as ... internationalized messages should not contain the `\r

So how to force xgettext to delete \n, \r, \t etc. automatically when string is found to avoid mentioned error so .PO file would be friendly formatted?

Thanks for c开发者_StackOverflow社区oming links and advices :)

Closed. Only way i see - invoke xgettext from PHP as :

passthru('xgettext -n *.php', $result);

With params :

• http://www.php.net/manual/en/function.passthru.php
• How to create .po files using xgettext on Windows?
• http://www.gnu.org/s/hello/manual/gettext/xgettext-Invocation.html