String splitting by spaces question

[Massi]

Hi everyone,

I have to parse a string and splitting it by spaces. The problem is
that the string can include substrings comprises by quotations which
must mantain the spaces. What I need is to pass from a string like:

This is an 'example string'

to the following vector:

["This", "is", "an", "example string"]

Which is the best way to achieve this?
Thanks in advance!