From 7846e7c17ae31fdf71bea093e7410b90e284c04d Mon Sep 17 00:00:00 2001
From: Craig Earls <enderw88@gmail.com>
Date: Sat, 13 Sep 2014 18:20:03 -0700
Subject: All navigation functions moved to ledger-navigate.

Reduce several overlapping functions.
---
 lisp/ledger-navigate.el | 92 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 lisp/ledger-navigate.el

(limited to 'lisp/ledger-navigate.el')

diff --git a/lisp/ledger-navigate.el b/lisp/ledger-navigate.el
new file mode 100644
index 00000000..949654e4
--- /dev/null
+++ b/lisp/ledger-navigate.el
@@ -0,0 +1,92 @@
+;;; ledger-navigate.el --- Provide navigation services through the ledger buffer.
+
+;; Copyright (C) 2014-2015 Craig Earls (enderw88 AT gmail DOT com)
+
+;; 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:
+;;
+
+
+(provide 'ledger-navigate)
+
+;; (defun ledger-navigate-next-xact-or-directive ()
+;;   "Move point to beginning of next xact."
+;; 	;; make sure we actually move to the next xact, even if we are the
+;; 	;; beginning of one now.
+;; 	(if (looking-at ledger-payee-any-status-regex)
+;; 			(forward-line))
+;;   (if (re-search-forward  ledger-payee-any-status-regex nil t)
+;;       (goto-char (match-beginning 0))
+;;     (goto-char (point-max))))
+
+(defun ledger-navigate-start-xact-or-directive-p ()
+	"return t if at the beginning of an empty line or line
+beginning with whitespace"
+	(not (looking-at "[ \t]\\|\\(^$\\)")))
+
+(defun ledger-navigate-next-xact-or-directive ()
+	"move to the beginning of the next xact or directive"
+	(interactive)
+	(beginning-of-line)
+	(if (ledger-navigate-start-xact-or-directive-p) ; if we are the start of an xact, move forward to the next xact
+			(progn
+				(forward-line)
+				(if (not (ledger-navigate-start-xact-or-directive-p)) ; we have moved forward and are not at another xact, recurse forward
+						(ledger-navigate-next-xact-or-directive)))
+		(while (not	(or (eobp)  ; we didn't start off at the beginning of an xact
+										(ledger-navigate-start-xact-or-directive-p)))
+			(forward-line))))
+
+(defun ledger-navigate-prev-xact ()
+  "Move point to beginning of previous xact."
+	(ledger-navigate-beginning-of-xact)
+	(re-search-backward ledger-xact-start-regex nil t))
+
+(defun ledger-navigate-beginning-of-xact ()
+	"Move point to the beginning of the current xact"
+	(interactive)
+	(unless (looking-at ledger-xact-start-regex)
+		(re-search-backward ledger-xact-start-regex nil t)
+		(beginning-of-line))
+	(point))
+
+(defun ledger-navigate-end-of-xact ()
+  "Move point to end of xact."
+	(interactive)
+  (ledger-navigate-next-xact-or-directive)
+	(backward-char)
+	(end-of-line)
+	(point))
+
+(defun ledger-navigate-to-line (line-number)
+  "Rapidly move point to line LINE-NUMBER."
+  (goto-char (point-min))
+  (forward-line (1- line-number)))
+
+(defun ledger-navigate-find-xact-extents (pos)
+  "Return list containing point for beginning and end of xact containing POS.
+Requires empty line separating xacts."
+  (interactive "d")
+  (save-excursion
+    (goto-char pos)
+    (list (ledger-navigate-beginning-of-xact)
+					(ledger-navigate-end-of-xact))))
+
+;;; ledger-navigate.el ends here
-- 
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