awk.ss: Awk-like Syntax
To load: (require (lib "awk.ss"))
This library defines the awk macro from Scsh:
(awk next-record-expr (record field-variable ···) counter-variable/optional ((state-variable init-expr) ···) continue-variable/optional clause ···) counter-variable/optional is either empty or variable continue-variable/optional is either empty or variable clause is one of (test body-expr ···1) (test => procedure-expr) (/ regexp-str / (variable-or-false ···1) body-expr ···1) (rangeexclusive-start-test exclusive-stop-test body-expr ···1) (:range inclusive-start-test exclusive-stop-test body-expr ···1) (range: exclusive-start-test inclusive-stop-test body-expr ···1) (:range: inclusive-start-test inclusive-inclusive-stop-test body-expr ···1) (else body-expr ···1) (afterbody-expr ···1) test is one of integer regexp-str expr variable-or-false is one of variable #f
For detailed information about awk, see Olin Shivers's Scsh Reference Manual. In addition to awk, the
Scsh-compatible procedures match:start,
match:end, match:substring, and
regexp-exec are defined. These match: procedures
must be used to extract match information in a regular expression
clause when using the => form.