120 lines
3.9 KiB
EmacsLisp
120 lines
3.9 KiB
EmacsLisp
;;; ledger-sort.el --- Helper code for use with the "ledger" command-line tool -*- lexical-binding: t; -*-
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;; Copyright (C) 2003-2016 John Wiegley (johnw AT gnu DOT org)
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;; This file is not part of GNU Emacs.
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;; This is free software; you can redistribute it and/or modify it under
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;; the terms of the GNU General Public License as published by the Free
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;; Software Foundation; either version 2, or (at your option) any later
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;; version.
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;;
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;; This is distributed in the hope that it will be useful, but WITHOUT
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;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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;; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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;; for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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;; MA 02110-1301 USA.
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;;; Commentary:
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;;
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;;; Code:
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(require 'ledger-regex)
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(require 'ledger-navigate)
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(require 'ledger-xact)
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(defun ledger-sort-find-start ()
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"Find the beginning of a sort region."
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(when (re-search-forward ";.*Ledger-mode:.*Start sort" nil t)
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(match-end 0)))
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(defun ledger-sort-find-end ()
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"Find the end of a sort region."
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(when (re-search-forward ";.*Ledger-mode:.*End sort" nil t)
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(match-end 0)))
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(defun ledger-sort-insert-start-mark ()
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"Insert a marker to start a sort region."
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(interactive)
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(save-excursion
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(goto-char (point-min))
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(when (ledger-sort-find-start)
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(delete-region (match-beginning 0) (match-end 0))))
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(beginning-of-line)
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(insert "\n; Ledger-mode: Start sort\n\n"))
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(defun ledger-sort-insert-end-mark ()
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"Insert a marker to end a sort region."
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(interactive)
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(save-excursion
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(goto-char (point-min))
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(when (ledger-sort-find-end)
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(delete-region (match-beginning 0) (match-end 0))))
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(beginning-of-line)
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(insert "\n; Ledger-mode: End sort\n\n"))
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(defun ledger-sort-startkey ()
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"Return a numeric sort key based on the date of the xact beginning at point."
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;; Can use `time-convert' to return an integer instead of a floating-point
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;; number, starting in Emacs 27.
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(float-time
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(ledger-parse-iso-date
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(buffer-substring-no-properties (point) (+ 10 (point))))))
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(defun ledger-sort-region (beg end)
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"Sort the region from BEG to END in chronological order."
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(interactive "r") ;; load beg and end from point and mark
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;; automagically
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(let* ((bounds (ledger-navigate-find-xact-extents (point)))
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(point-delta (- (point) (car bounds)))
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(target-xact (buffer-substring (car bounds) (cadr bounds)))
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(inhibit-modification-hooks t))
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(save-excursion
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(save-restriction
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(goto-char beg)
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;; make sure beg of region is at the beginning of a line
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(beginning-of-line)
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;; make sure point is at the beginning of a xact
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(unless (looking-at-p ledger-payee-any-status-regex)
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(ledger-navigate-next-xact))
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(setq beg (point))
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(goto-char end)
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(ledger-navigate-next-xact)
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;; make sure end of region is at the beginning of next record
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;; after the region
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(setq end (point))
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(narrow-to-region beg end)
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(goto-char beg)
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(let ((inhibit-field-text-motion t))
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(sort-subr
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nil
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#'ledger-navigate-next-xact
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#'ledger-navigate-end-of-xact
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#'ledger-sort-startkey))))
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(goto-char (point-min))
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(search-forward target-xact)
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(goto-char (+ (match-beginning 0) point-delta))))
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(defun ledger-sort-buffer ()
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"Sort the entire buffer."
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(interactive)
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(let (sort-start sort-end)
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(save-excursion
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(goto-char (point-min))
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(setq sort-start (ledger-sort-find-start)
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sort-end (ledger-sort-find-end)))
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(ledger-sort-region (or sort-start (point-min))
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(or sort-end (point-max)))))
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(provide 'ledger-sort)
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;;; ledger-sort.el ends here
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