Drupal input filter example

Question

I am trying to write an input filter that turns everything that starts with http and ends with .mp3 into an audio element, therefore:

http://google.com/file.mp3 → <audio src='http://google.com/file.mp3' />

Regular expression is not a problem for me, just not sure how to build a module.

A simple example that would allow me to add many additional rules would be very helpful, thanks.

I know about a custom filter module, but it has quite a lot of overhead.

Answer 1

I think you just need to implement hook_filter () in your custom module. This page provides a detailed example filter_example.module module .