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;;; ledger-xact.el --- Helper code for use with the "ledger" command-line tool
;; Copyright (C) 2003-2015 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., 51 Franklin Street, Fifth Floor, Boston,
;; MA 02110-1301 USA.
;;; Commentary:
;;
;;; Code:
(defun ledger-sort-find-start ()
"Find the beginning of a sort region"
(if (re-search-forward ";.*Ledger-mode:.*Start sort" nil t)
(match-end 0)))
(defun ledger-sort-find-end ()
"Find the end of a sort region"
(if (re-search-forward ";.*Ledger-mode:.*End sort" nil t)
(match-end 0)))
(defun ledger-sort-insert-start-mark ()
"Insert a marker to start a sort region"
(interactive)
(save-excursion
(goto-char (point-min))
(if (ledger-sort-find-start)
(delete-region (match-beginning 0) (match-end 0))))
(beginning-of-line)
(insert "\n; Ledger-mode: Start sort\n\n"))
(defun ledger-sort-insert-end-mark ()
"Insert a marker to end a sort region"
(interactive)
(save-excursion
(goto-char (point-min))
(if (ledger-sort-find-end)
(delete-region (match-beginning 0) (match-end 0))))
(beginning-of-line)
(insert "\n; Ledger-mode: End sort\n\n"))
(defun ledger-sort-startkey ()
"Return the actual date so the sort-subr doesn't sort onthe entire first line."
(buffer-substring-no-properties (point) (+ 10 (point))))
(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)
point-delta
(bounds (ledger-navigate-find-xact-extents (point)))
target-xact)
(setq point-delta (- (point) (car bounds)))
(setq target-xact (buffer-substring (car bounds) (cadr bounds)))
(setq inhibit-modification-hooks t)
(save-excursion
(save-restriction
(goto-char beg)
;; make sure point is at the beginning of a xact
(ledger-navigate-next-xact)
(unless (looking-at ledger-payee-any-status-regex)
(ledger-navigate-next-xact))
(setq new-beg (point))
(goto-char end)
(ledger-navigate-next-xact)
;; make sure end of region is at the beginning of next record
;; after the region
(setq new-end (point))
(narrow-to-region new-beg new-end)
(goto-char new-beg)
(let ((inhibit-field-text-motion t))
(sort-subr
nil
'ledger-navigate-next-xact
'ledger-navigate-end-of-xact
'ledger-sort-startkey))))
(goto-char (point-min))
(re-search-forward (regexp-quote target-xact))
(goto-char (+ (match-beginning 0) point-delta))
(setq inhibit-modification-hooks nil)))
(defun ledger-sort-buffer ()
"Sort the entire buffer."
(interactive)
(let (sort-start
sort-end)
(save-excursion
(goto-char (point-min))
(setq sort-start (ledger-sort-find-start)
sort-end (ledger-sort-find-end)))
(ledger-sort-region (if sort-start
sort-start
(point-min))
(if sort-end
sort-end
(point-max)))))
(provide 'ledger-sort)
;;; ledger-sort.el ends here
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