9c3535823a
When the right place to add a transaction is after all existing transactions, add it just after the last transaction rather than at the end of the buffer. (Otherwise the transactions get added after Local Variables blocks and any other endmatter.)
212 lines
7.3 KiB
EmacsLisp
212 lines
7.3 KiB
EmacsLisp
;;; ledger-xact.el --- Helper code for use with the "ledger" command-line tool
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;; Copyright (C) 2003-2014 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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;; 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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(defcustom ledger-use-iso-dates nil
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"If non-nil, use the iso-8601 format for dates (YYYY-MM-DD)."
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:type 'boolean
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:group 'ledger
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:safe t)
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(defvar ledger-xact-highlight-overlay (list))
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(make-variable-buffer-local 'ledger-xact-highlight-overlay)
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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 ledger-xact-highlight-overlay))
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(if (not ledger-xact-highlight-overlay)
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(setq ovl
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(setq ledger-xact-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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(let (last-xact-start)
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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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(setq last-xact-start start)
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(if (ledger-time-less-p moment date)
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(throw 'found t))))))
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(when (and (eobp) last-xact-start)
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(let ((end (cadr (ledger-find-xact-extents last-xact-start))))
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(goto-char end)
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(if (eobp)
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(insert "\n")
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(forward-line))))))
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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-year-and-month ()
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(let ((sep (if ledger-use-iso-dates
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"-"
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"/")))
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(concat ledger-year sep ledger-month sep)))
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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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(ledger-read-date "Copy to date: ")))
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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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(if (re-search-forward "[-0-9]")
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(goto-char (match-beginning 0)))))
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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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;; Note: This isn't "just" the date - it can contain
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;; other text too
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(ledger-read-date "Transaction: ")))
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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 'ledger-xact)
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;;; ledger-xact.el ends here
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