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;;; ledger.el --- Helper code for using my "ledger" command-line tool
;; Copyright (C) 2004 John Wiegley (johnw AT gnu DOT org)
;; Emacs Lisp Archive Entry
;; Filename: ledger.el
;; Version: 1.1
;; Date: Thu 02-Apr-2004
;; Keywords: data
;; Author: John Wiegley (johnw AT gnu DOT org)
;; Maintainer: John Wiegley (johnw AT gnu DOT org)
;; Description: Helper code for using my "ledger" command-line tool
;; URL: http://www.newartisans.com/johnw/emacs.html
;; Compatibility: Emacs21
;; 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:
;; This code is only meaningful if you are using "ledger".
(defvar ledger-version "1.1"
"The version of ledger.el currently loaded")
(defun ledger-iterate-entries (callback)
(goto-char (point-min))
(let* ((now (current-time))
(current-year (nth 5 (decode-time now))))
(while (not (eobp))
(when (looking-at
(concat "\\(Y\\s-+\\([0-9]+\\)\\|"
"\\([0-9]\\{4\\}+\\)?[./]?"
"\\([0-9]+\\)[./]\\([0-9]+\\)\\s-+"
"\\(\\*\\s-+\\)?\\(.+\\)\\)"))
(let ((found (match-string 2)))
(if found
(setq current-year (string-to-number found))
(let ((start (match-beginning 0))
(year (match-string 3))
(month (string-to-number (match-string 4)))
(day (string-to-number (match-string 5)))
(mark (match-string 6))
(desc (match-string 7)))
(if (and year (> (length year) 0))
(setq year (string-to-number year)))
(funcall callback start
(encode-time 0 0 0 day month
(or year current-year))
mark desc)))))
(forward-line))))
(defun ledger-find-slot (moment)
(catch 'found
(ledger-iterate-entries
(function
(lambda (start date mark desc)
(if (time-less-p moment date)
(throw 'found t)))))))
(defun ledger-add-entry (entry)
(interactive
(list (read-string "Entry: " (format-time-string "%m/%d "))))
(let ((args (mapcar 'shell-quote-argument (split-string entry)))
date entry)
(with-temp-buffer
(shell-command
(concat "ledger entry "
(mapconcat 'identity args " ")) t)
(setq date (buffer-substring (point) (+ (point) 10)))
(setq entry (buffer-substring (+ (point) 5) (point-max))))
(if (string-match "\\([0-9]+\\)/\\([0-9]+\\)/\\([0-9]+\\)" date)
(setq date (encode-time 0 0 0 (string-to-int (match-string 3 date))
(string-to-int (match-string 2 date))
(string-to-int (match-string 1 date)))))
(ledger-find-slot date)
(insert entry)))
(defun ledger-expand-entry ()
(interactive)
(ledger-add-entry (prog1
(buffer-substring (line-beginning-position)
(line-end-position))
(delete-region (line-beginning-position)
(1+ (line-end-position))))))
(defun ledger-toggle-current ()
(interactive)
(let (clear)
(save-excursion
(when (or (looking-at "^[0-9]")
(re-search-backward "^[0-9]" nil t))
(skip-chars-forward "0-9./")
(delete-horizontal-space)
(if (equal ?\* (char-after))
(delete-char 1)
(insert " * ")
(setq clear t))))
clear))
(define-derived-mode ledger-mode text-mode "Ledger"
"A mode for editing ledger data files."
(setq comment-start ";" comment-end nil
indent-tabs-mode nil)
(let ((map (current-local-map)))
(define-key map [(control ?c) (control ?a)] 'ledger-add-entry)
(define-key map [(control ?c) (control ?c)] 'ledger-toggle-current)))
(defun ledger-parse-entries (account &optional all-p)
;; `then' is 45 days ago
(let ((then (time-subtract (current-time)
(seconds-to-time (* 45 24 60 60))))
total entries)
(ledger-iterate-entries
(function
(lambda (start date mark desc)
(when (or all-p (not mark) (time-less-p then date))
(forward-line)
(setq total 0.0)
(while (looking-at
(concat "\\s-+\\([A-Za-z_].+?\\)\\(\\s-*$\\| \\s-*"
"\\([^0-9]+\\)\\s-*\\([0-9.]+\\)\\)"))
(let ((acct (match-string 1))
(amt (match-string 4)))
(if amt
(setq amt (string-to-number amt)
total (+ total amt)))
(if (string= account acct)
(setq entries
(cons (list (copy-marker start)
mark date desc (or amt total))
entries))))
(forward-line))))))
(nreverse entries)))
(define-derived-mode ledger-reconcile-mode text-mode "Reconcile"
"A mode for reconciling ledger entries."
(let ((map (make-sparse-keymap)))
(define-key map [? ] 'ledger-reconcile-toggle)
(use-local-map map)))
(defvar ledger-buf nil)
(make-variable-buffer-local 'ledger-buf)
(defun ledger-reconcile-toggle ()
(interactive)
(let ((where (get-text-property (point) 'where))
cleared)
(with-current-buffer ledger-buf
(goto-char where)
(setq cleared (ledger-toggle-current)))
(if cleared
(add-text-properties (line-beginning-position)
(line-end-position)
(list 'face 'bold))
(remove-text-properties (line-beginning-position)
(line-end-position)
(list 'face)))))
(defun ledger-reconcile (account)
(interactive "sAccount to reconcile: ")
(let ((items (save-excursion
(goto-char (point-min))
(ledger-parse-entries account)))
(buf (current-buffer)))
(pop-to-buffer (generate-new-buffer "*Reconcile*"))
(ledger-reconcile-mode)
(setq ledger-buf buf)
(dolist (item items)
(let ((beg (point)))
(insert (format "%s %-30s %8.2f\n"
(format-time-string "%Y.%m.%d" (nth 2 item))
(nth 3 item) (nth 4 item)))
(if (nth 1 item)
(set-text-properties beg (1- (point))
(list 'face 'bold
'where (nth 0 item)))
(set-text-properties beg (1- (point))
(list 'where (nth 0 item))))))
(goto-char (point-min))))
(provide 'ledger)
;;; ledger.el ends here
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