How to detect source code in a text?

Question

Is it possible to detect a programming language source code (primarily Java and C# ) in a text?

For example I want to know whether there is any source code part in this text.

.. text text text text text text text text text
text text text text text text text text text
text text text text text text text text text

public static Person createInstance() { return new Person();}

text text text text text text text text text
text text text text text text text text text
text text text text text text text text text ..

I have been searching this for a while and I couldn't find anything.

A solution with Python would be wonderful.

Regards.

Answer 1

There are some syntax highlighters around (pygments, google-code-prettify) and they've solved code detection and classification. Studying their sources could give an impression how it is done.

(now that I looked at pygments again - I don't know if they can autodetect the programming language. But google-code-prettify definitly can do it)