Lilypond to read xml piano sheet music and output it with a number added to each note relative to middle c

[Petri Moilanen]

Can Lilypond be used to import xml piano sheet music and then run a snippet which will calculate a

relative position for each note against middle c and output the same back as pdf having the number

added below each note on the right and left staff ? The middle c would start from 1 and then b would

be -1.

I would like to automate the process so that I could run a command from the command line to process

several xml files in a batch.

If this cannot be done using a snippet, what other alternatives one could have ?

Best regards

Petri