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utils: Handle Booleans when reading Org-mode tables.

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This commit is contained in:
Sergiu Ivanov 2020-04-05 22:35:21 +02:00
parent cdca40eb40
commit 43a2f1aff0
2 changed files with 16 additions and 1 deletions
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2
utils-tests.rkt
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@ -45,6 +45,8 @@
(check-equal? (string->any "14") 14)
(check-equal? (read-org-sexp "((\"a\" \"(and a b)\") (\"b\" \"(or b (not a))\"))")
'(("a" "(and a b)") ("b" "(or b (not a))")))
(check-equal? (read-org-sexp "(#t \"#t\" \"#t \" '(1 2 \"#f\"))")
'(#t #t "#t " '(1 2 #f)))
(check-equal? (unstringify-pairs '(("a" . "1") ("b" . "(and a (not b))")))
'((a . 1) (b . (and a (not b)))))
(check-equal? (unstringify-pairs '(("a" . 1) ("b" . "(and a (not b))")))

15
utils.rkt
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@ -197,9 +197,22 @@
(define (string->any str)
(with-input-from-string str (λ () (read))))
;;; Given a sexp, converts all "#f" to #f and "#t" to #t.
;;;
;;; When I read Org-mode tables, I pump them through a call to the
;;; prin1 because the elisp sexp seems incompatible with Racket. On
;;; the other hand, Racket Booleans seem to upset elisp a little, so
;;; prin1 wraps them in additional double quotes. This function
;;; removes those quotes.
(define/match (handle-org-booleans datum)
[("#t") #t]
[("#f") #f]
[((? list?)) (map handle-org-booleans datum)]
[ (_) datum])
;;; Reads a sexp from a string produced by Org-mode for a named table.
;;; See example.org for examples.
(define (read-org-sexp str) (string->any str))
(define read-org-sexp (compose handle-org-booleans string->any))
;;; A shortcut for read-org-sexp.
(define unorg read-org-sexp)