;;; ob-ledger.el --- Babel Functions for Ledger -*- lexical-binding: t; -*-
|
|
;; Copyright (C) 2010-2018 Free Software Foundation, Inc.
|
|
;; Author: Eric S Fraga
|
;; Keywords: literate programming, reproducible research, accounting
|
;; Homepage: https://orgmode.org
|
|
;; This file is part of GNU Emacs.
|
|
;; GNU Emacs is free software: you can redistribute it and/or modify
|
;; it under the terms of the GNU General Public License as published by
|
;; the Free Software Foundation, either version 3 of the License, or
|
;; (at your option) any later version.
|
|
;; GNU Emacs is distributed in the hope that it will be useful,
|
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
;; GNU General Public License for more details.
|
|
;; You should have received a copy of the GNU General Public License
|
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
|
|
;;; Commentary:
|
|
;; Org-Babel support for evaluating ledger entries.
|
;;
|
;; This differs from most standard languages in that
|
;;
|
;; 1) there is no such thing as a "session" in ledger
|
;;
|
;; 2) we are generally only going to return output from the ledger program
|
;;
|
;; 3) we are adding the "cmdline" header argument
|
;;
|
;; 4) there are no variables
|
|
;;; Code:
|
(require 'ob)
|
|
(defvar org-babel-default-header-args:ledger
|
'((:results . "output") (:cmdline . "bal"))
|
"Default arguments to use when evaluating a ledger source block.")
|
|
(defun org-babel-execute:ledger (body params)
|
"Execute a block of Ledger entries with org-babel. This function is
|
called by `org-babel-execute-src-block'."
|
(message "executing Ledger source code block")
|
(let ((cmdline (cdr (assq :cmdline params)))
|
(in-file (org-babel-temp-file "ledger-"))
|
(out-file (org-babel-temp-file "ledger-output-")))
|
(with-temp-file in-file (insert body))
|
(message "%s" (concat "ledger"
|
" -f " (org-babel-process-file-name in-file)
|
" " cmdline))
|
(with-output-to-string
|
(shell-command (concat "ledger"
|
" -f " (org-babel-process-file-name in-file)
|
" " cmdline
|
" > " (org-babel-process-file-name out-file))))
|
(with-temp-buffer (insert-file-contents out-file) (buffer-string))))
|
|
(defun org-babel-prep-session:ledger (_session _params)
|
(error "Ledger does not support sessions"))
|
|
(provide 'ob-ledger)
|
|
|
|
;;; ob-ledger.el ends here
|
