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;;; ldg-xact.el --- Helper code for use with the "ledger" command-line tool
;; Copyright (C) 2003-2013 John Wiegley (johnw AT gnu DOT org)
;; This file is not part of GNU Emacs.
;; This 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 2, or (at your option) any later
;; version.
;;
;; This 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; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
;; MA 02111-1307, USA.
;;; Commentary:
;;
;;; Code:
(defun ledger-next-record-function ()
"Move point to next transaction."
(if (re-search-forward
(concat "^[0-9/.=-]+\\(\\s-+\\*\\)?\\(\\s-+(.*?)\\)?\\s-+"
"\\(.+?\\)\\(\t\\|\n\\| [ \t]\\)") nil t)
(goto-char (match-beginning 0))
(goto-char (point-max))))
(defun ledger-end-record-function ()
"Move point to end of transaction."
(forward-paragraph))
(defun ledger-sort-region (beg end)
"Sort the region from BEG to END in chronological order."
(interactive "r") ;; load beg and end from point and mark
;; automagically
(let ((new-beg beg)
(new-end end))
(save-excursion
(save-restriction
(ledger-next-record-function) ;; make sure point is at the
;; beginning of a xact
(setq new-beg (point))
(goto-char end)
(ledger-next-record-function) ;; make sure end of region is at
;; the beginning of next record
;; after the region
(setq new-end (point))
(narrow-to-region beg end)
(goto-char (point-min))
(let ((inhibit-field-text-motion t))
(sort-subr
nil
'ledger-next-record-function
'ledger-end-record-function))))))
(defun ledger-sort-buffer ()
"Sort the entire buffer."
(interactive)
(ledger-sort-region (point-min) (point-max)))
(provide 'ldg-sort)
;;; ldg-sort.el ends here
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