Support reading from FILE*

[agladysh]

I have a large chunk of data in a file, encoded with msgpack, and I want to load it to Lua.

I do not want to pay for overhead of interning this file as a string into Lua state. Instead I want a lua-cmsgpack call that would load my data from file directly.

Is it possible?

I realize that this is somewhat a corner case for lua-cmsgpack, as it is persistence and not message passing, but anyway — would be quite useful.

[agladysh]

This (i.e. msgpack.unpack_from_file("filename")) should be easily doable with memory mapped files BTW.

[denisdemaisbr]

@agladysh
try: msgpack.unpack( io.open('filename', 'rb'):read('*all') )