aoc2020/scripts/make-day

#!/usr/bin/env racket
#lang racket

(require racket/runtime-path
         scribble/text (rename-in scribble/text/output [output scribble-output]))

(define-runtime-path template "template.rktrkt")

(define (eval-template file vars [port (current-output-port)])
  (define cs (current-namespace))
  (define output-exp
    (parameterize ([current-namespace (make-base-namespace)])
      (for ([mod (in-list '(scribble/text))])
        (namespace-attach-module cs mod)
        (namespace-require mod))
      (hash-for-each vars namespace-set-variable-value!)
      (eval `(include/text (file ,file)))))
  (scribble-output output-exp port))


(command-line
  #:program "make-day"
  #:args (day)
  (call-with-output-file
    (format "~a.rkt" day)
    (lambda (out)
      (eval-template (path->string template) (hash 'day day) out))))