Documentation: http://people.csail.mit.edu/jaffer/slib/Standard-Formatted-Input.html#Standard-Formatted-Input
To use: (import (slib scanf))
Note: this library only exports two functions.
scanf-read-list accepts a format string and an optional port or string to
read from (else the current-input-port is used for input). The output
is a list of the tokens successfully read:
> (scanf-read-list "%d %d %d" "1 23 456") (1 23 456)
scanf-read-values accepts a format string and an optional port or string to
read from (else the current-input-port is used for input). The output
is a set of values for the total number of tokens, and then the individual
token values successfully read:
(let-values (((n x y z) (scanf-read-values "%d %d %d" "2 3 4"))) ; n = 3, x = 2, y = 3, z = 4 )
For more information including compatibility, examples and test cases, see https://github.com/petercrlane/r7rs-libs