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(defgroup ledger-exec nil
"Interface to the Ledger command-line accounting program."
:group 'ledger)
(defcustom ledger-binary-path "ledger"
"Path to the ledger executable."
:type 'file
:group 'ledger)
(defun ledger-exec-ledger (input-buffer &optional output-buffer &rest args)
"Run Ledger."
(if (null ledger-binary-path)
(error "The variable `ledger-binary-path' has not been set"))
(let ((buf (or input-buffer (current-buffer)))
(outbuf (or output-buffer
(generate-new-buffer " *ledger-tmp*"))))
(with-current-buffer buf
(let ((coding-system-for-write 'utf-8)
(coding-system-for-read 'utf-8))
(apply #'call-process-region
(append (list (point-min) (point-max)
ledger-binary-path nil outbuf nil "-f" "-")
args)))
outbuf)))
(defun ledger-exec-read (&optional input-buffer &rest args)
(with-current-buffer
(apply #'ledger-exec-ledger input-buffer nil "emacs" args)
(goto-char (point-min))
(prog1
(read (current-buffer))
(kill-buffer (current-buffer)))))
(provide 'ldg-exec)
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