Is it possible to convert strings to pov statements and vice versa?

If possible, the string "camera {location  <0.0, 0.5, -4.0> direction 1.5*z
right x*image_width/image_height look_at <0.0, 0.0,  0.0>}" would become a
regular piece of pov-script like this:

camera {location  <0.0, 0.5, -4.0>direction 1.5*z right
x*image_width/image_height look_at <0.0, 0.0,  0.0>}


And is it possible to convert strings like "123.983458" to plain variables
without traversing the string and do it all by povscript?

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