blob: 423c78f7db0a5bad6394201363faf1ee464ee861 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
;;; Chicanery extras
(export slurp)
(define slurp
(case-lambda
(() (slurp (current-input-port)))
((port)
(let loop ((ch (read-char port))
(acc '()))
(if (eof-object? ch)
(list->string (reverse acc))
(loop (read-char port)
(cons ch acc)))))))
(export with-output-to-string
with-input-from-string)
(define (with-output-to-string thunk)
(call-with-port (open-output-string)
(lambda (port)
(parameterize ((current-output-port port))
(thunk))
(get-output-string port))))
(define (with-input-from-string s thunk)
(call-with-port (open-input-string s)
(lambda (port)
(parameterize ((current-input-port port))
(thunk)))))
(export displayed ->string
written
print)
(define (displayed x)
(with-output-to-string
(lambda () (display x))))
(define ->string displayed)
(define (written x)
(with-output-to-string
(lambda () (write x))))
(define (print . xs)
(for-each display xs)
(newline))
|
