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71 lines
2.3 KiB
EmacsLisp
71 lines
2.3 KiB
EmacsLisp
;;; ob-ledger.el --- Babel Functions for Ledger -*- lexical-binding: t; -*-
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;; Copyright (C) 2010-2020 Free Software Foundation, Inc.
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;; Author: Eric S Fraga
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;; Keywords: literate programming, reproducible research, accounting
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;; Homepage: https://orgmode.org
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Org-Babel support for evaluating ledger entries.
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;;
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;; This differs from most standard languages in that
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;;
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;; 1) there is no such thing as a "session" in ledger
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;;
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;; 2) we are generally only going to return output from the ledger program
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;;
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;; 3) we are adding the "cmdline" header argument
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;;
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;; 4) there are no variables
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;;; Code:
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(require 'ob)
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(defvar org-babel-default-header-args:ledger
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'((:results . "output") (:cmdline . "bal"))
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"Default arguments to use when evaluating a ledger source block.")
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(defun org-babel-execute:ledger (body params)
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"Execute a block of Ledger entries with org-babel. This function is
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called by `org-babel-execute-src-block'."
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(message "executing Ledger source code block")
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(let ((cmdline (cdr (assq :cmdline params)))
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(in-file (org-babel-temp-file "ledger-"))
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(out-file (org-babel-temp-file "ledger-output-")))
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(with-temp-file in-file (insert body))
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(message "%s" (concat "ledger"
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" -f " (org-babel-process-file-name in-file)
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" " cmdline))
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(with-output-to-string
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(shell-command (concat "ledger"
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" -f " (org-babel-process-file-name in-file)
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" " cmdline
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" > " (org-babel-process-file-name out-file))))
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(with-temp-buffer (insert-file-contents out-file) (buffer-string))))
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(defun org-babel-prep-session:ledger (_session _params)
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(error "Ledger does not support sessions"))
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(provide 'ob-ledger)
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;;; ob-ledger.el ends here
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