189 lines
6.5 KiB
EmacsLisp
189 lines
6.5 KiB
EmacsLisp
;;; ldg-xact.el --- Helper code for use with the "ledger" command-line tool
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;; Copyright (C) 2003-2013 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., 59 Temple Place - Suite 330, Boston,
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;; MA 02111-1307, USA.
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;;; Commentary:
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;; Utilities for running ledger synchronously.
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;;; Code:
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(defcustom ledger-highlight-xact-under-point t
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"If t highlight xact under point."
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:type 'boolean
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:group 'ledger)
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(defvar highlight-overlay (list))
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(defun ledger-find-xact-extents (pos)
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"Return point for beginning of xact and and of xact containing position.
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Requires empty line separating xacts. Argument POS is a location
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within the transaction."
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(interactive "d")
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(save-excursion
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(goto-char pos)
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(list (progn
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(backward-paragraph)
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(if (/= (point) (point-min))
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(forward-line))
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(line-beginning-position))
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(progn
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(forward-paragraph)
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(line-beginning-position)))))
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(defun ledger-highlight-xact-under-point ()
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"Move the highlight overlay to the current transaction."
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(if ledger-highlight-xact-under-point
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(let ((exts (ledger-find-xact-extents (point)))
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(ovl highlight-overlay))
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(if (not highlight-overlay)
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(setq ovl
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(setq highlight-overlay
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(make-overlay (car exts)
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(cadr exts)
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(current-buffer) t nil)))
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(move-overlay ovl (car exts) (cadr exts)))
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(overlay-put ovl 'face 'ledger-font-xact-highlight-face)
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(overlay-put ovl 'priority 100))))
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(defun ledger-xact-payee ()
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"Return the payee of the transaction containing point or nil."
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(let ((i 0))
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(while (eq (ledger-context-line-type (ledger-context-other-line i)) 'acct-transaction)
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(setq i (- i 1)))
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(let ((context-info (ledger-context-other-line i)))
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(if (eq (ledger-context-line-type context-info) 'xact)
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(ledger-context-field-value context-info 'payee)
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nil))))
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(defun ledger-time-less-p (t1 t2)
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"Say whether time value T1 is less than time value T2."
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(or (< (car t1) (car t2))
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(and (= (car t1) (car t2))
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(< (nth 1 t1) (nth 1 t2)))))
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(defun ledger-xact-find-slot (moment)
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"Find the right place in the buffer for a transaction at MOMENT.
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MOMENT is an encoded date"
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(catch 'found
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(ledger-xact-iterate-transactions
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(function
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(lambda (start date mark desc)
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(if (ledger-time-less-p moment date)
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(throw 'found t)))))))
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(defun ledger-xact-iterate-transactions (callback)
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"Iterate through each transaction call CALLBACK for each."
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(goto-char (point-min))
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(let* ((now (current-time))
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(current-year (nth 5 (decode-time now))))
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(while (not (eobp))
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(when (looking-at ledger-iterate-regex)
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(let ((found-y-p (match-string 2)))
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(if found-y-p
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(setq current-year (string-to-number found-y-p)) ;; a Y directive was found
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(let ((start (match-beginning 0))
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(year (match-string 4))
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(month (string-to-number (match-string 5)))
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(day (string-to-number (match-string 6)))
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(mark (match-string 7))
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(code (match-string 8))
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(desc (match-string 9)))
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(if (and year (> (length year) 0))
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(setq year (string-to-number year)))
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(funcall callback start
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(encode-time 0 0 0 day month
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(or year current-year))
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mark desc)))))
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(forward-line))))
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(defsubst ledger-goto-line (line-number)
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"Rapidly move point to line LINE-NUMBER."
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(goto-char (point-min))
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(forward-line (1- line-number)))
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(defun ledger-copy-transaction-at-point (date)
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"Ask for a new DATE and copy the transaction under point to that date. Leave point on the first amount."
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(interactive (list
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(read-string "Copy to date: "
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(concat ledger-year "/" ledger-month "/") 'ledger-minibuffer-history)))
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(let* ((here (point))
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(extents (ledger-find-xact-extents (point)))
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(transaction (buffer-substring-no-properties (car extents) (cadr extents)))
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encoded-date)
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(if (string-match ledger-iso-date-regexp date)
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(setq encoded-date
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(encode-time 0 0 0 (string-to-number (match-string 4 date))
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(string-to-number (match-string 3 date))
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(string-to-number (match-string 2 date)))))
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(ledger-xact-find-slot encoded-date)
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(insert transaction "\n")
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(backward-paragraph 2)
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(re-search-forward ledger-iso-date-regexp)
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(replace-match date)
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(ledger-next-amount)))
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(defun ledger-delete-current-transaction (pos)
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"Delete the transaction surrounging point."
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(interactive "d")
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(let ((bounds (ledger-find-xact-extents pos)))
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(delete-region (car bounds) (cadr bounds))))
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(defun ledger-add-transaction (transaction-text &optional insert-at-point)
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"Use ledger xact TRANSACTION-TEXT to add a transaction to the buffer.
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If INSERT-AT-POINT is non-nil insert the transaction
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there, otherwise call `ledger-xact-find-slot' to insert it at the
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correct chronological place in the buffer."
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(interactive (list
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(read-string "Transaction: " (concat ledger-year "/" ledger-month "/"))))
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(let* ((args (with-temp-buffer
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(insert transaction-text)
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(eshell-parse-arguments (point-min) (point-max))))
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(ledger-buf (current-buffer))
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exit-code)
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(unless insert-at-point
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(let ((date (car args)))
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(if (string-match ledger-iso-date-regexp date)
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(setq date
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(encode-time 0 0 0 (string-to-number (match-string 4 date))
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(string-to-number (match-string 3 date))
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(string-to-number (match-string 2 date)))))
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(ledger-xact-find-slot date)))
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(if (> (length args) 1)
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(save-excursion
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(insert
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(with-temp-buffer
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(setq exit-code
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(apply #'ledger-exec-ledger ledger-buf (current-buffer) "xact"
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(mapcar 'eval args)))
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(goto-char (point-min))
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(if (looking-at "Error: ")
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(error (concat "Error in ledger-add-transaction: " (buffer-string)))
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(buffer-string)))
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"\n"))
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(progn
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(insert (car args) " \n\n")
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(end-of-line -1)))))
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(provide 'ldg-xact)
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;;; ldg-xact.el ends here
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