40 lines
1.4 KiB
Scheme
40 lines
1.4 KiB
Scheme
(define-c-library libc
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'("stdlib.h" "stdio.h" "unistd.h")
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libc-name
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'((additional-versions ("0" "6"))))
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(define-c-procedure c-tempnam libc 'tempnam 'pointer '(pointer pointer))
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(define-c-procedure c-system libc 'system 'int '(pointer))
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(define previous-exit-code #f)
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(define (shell cmd)
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(let* ((temp-prefix (string->c-utf8 "npcmd"))
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(temp-name (lambda ()
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(c-utf8->string (c-tempnam (make-c-null)
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temp-prefix))))
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(input-path (temp-name))
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(shell-command (string-append cmd
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" 1> "
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input-path
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" 2> "
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input-path
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" & ")))
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(create-pipe input-path 0777)
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(set! previous-exit-code (c-system (string->c-utf8 shell-command)))
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(pipe-read-string 64000 (open-input-pipe input-path #t))))
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(define (lines->list port result)
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(let ((line (read-line port)))
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(if (eof-object? line)
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(reverse result)
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(lines->list port (cons line result)))))
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(define (shell->list cmd)
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(lines->list (open-input-string (shell cmd)) '()))
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(define (shell->sexp cmd)
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(read (open-input-string (shell cmd))))
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(define (shell-exit-code) previous-exit-code)
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