Awk

Files: awk.ss, awkc.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   )
     (test => procedure-expr)
     (/ regexp-str / (variable-or-false   ) body-expr   )
     (range exclusive-start-test exclusive-stop-test body-expr   )
     (:range inclusive-start-test exclusive-stop-test body-expr   )
     (range: exclusive-start-test inclusive-stop-test body-expr   )
     (:range: inclusive-start-test inclusive-inclusive-stop-test body-expr   )
     (else body-expr   )
     (after body-expr   )

  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.