45 lines
1.7 KiB
Scheme
45 lines
1.7 KiB
Scheme
(module pandoc
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(pandoc-command-line
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pandoc-port->json
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pandoc-port->sxml
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pandoc-file->json
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pandoc-file->sxml)
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(import (scheme)
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(chicken base)
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(only (chicken io) read-byte write-byte)
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(only (chicken port) copy-port)
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(only (chicken process) process process-wait)
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(only (scsh-process) run/port)
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(only (medea) read-json))
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(define (run-read-write/old args input-port read-output)
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(receive (from-sub to-sub sub) (process (car args) (cdr args))
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(copy-port input-port to-sub read-byte write-byte)
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(close-output-port to-sub)
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(let ((output (read-output from-sub)))
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(receive (sub clean-exit? exit-status) (process-wait sub)
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;; Call `process-wait` before closing the last port to avoid
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;; triggering the automatic `process-wait` done by `process`
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;; when all ports are closed. If we relied on the implicit
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;; `process-wait`, we couldn't find out the exit status.
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(close-input-port from-sub)
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(if (and clean-exit? (eqv? 0 exit-status)) output
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(error "Error running" args))))))
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(define (pandoc-port->json input-format input-port)
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(let ((pandoc (string->symbol (car (pandoc-command-line)))))
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(read-json (run/port (,pandoc --from ,input-format --to json)
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(= 0 input-port)))))
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(define (call-with-binary-input-file filename proc)
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(let ((port (open-input-file filename #:binary)))
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(dynamic-wind (lambda () #f)
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(lambda () (proc port))
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(lambda () (close-input-port port)))))
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(define pandoc-command-line (make-parameter (list "pandoc")))
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(include "pandoc.r5rs.scm"))
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