1 files changed, 68 insertions, 0 deletions
diff --git a/lisp/ledger-init.el b/lisp/ledger-init.el
new file mode 100644
index 00000000..fd06d4c5
--- /dev/null
+++ b/lisp/ledger-init.el
@@ -0,0 +1,68 @@
+;;; ledger-init.el --- Helper code for use with the "ledger" command-line tool
+
+;; Copyright (C) 2003-2013 John Wiegley (johnw AT gnu DOT org)
+
+;; 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:
+;; Determine the ledger environment
+
+(require 'ledger-regex)
+
+(defcustom ledger-init-file-name "~/.ledgerrc"
+  "Location of the ledger initialization file. nil if you don't have one"
+  :group 'ledger-exec)
+
+(defvar ledger-environment-alist nil)
+
+(defun ledger-init-parse-initialization (buffer)
+  (with-current-buffer buffer
+    (let (environment-alist)
+      (goto-char (point-min))
+      (while (re-search-forward ledger-init-string-regex nil t )
+	(let ((matchb (match-beginning 0)) ;; save the match data, string-match stamp on it
+	      (matche (match-end 0)))
+	  (end-of-line)
+	  (setq environment-alist
+		(append environment-alist
+			(list (cons (let ((flag (buffer-substring-no-properties (+ 2 matchb) matche)))
+				      (if (string-match "[ \t\n\r]+\\'" flag)
+					  (replace-match "" t t flag)
+					  flag))
+				    (let ((value (buffer-substring-no-properties  matche (point) )))
+				      (if (> (length value) 0)
+					  value
+					  t))))))))
+      environment-alist)))
+
+(defun ledger-init-load-init-file ()
+  (interactive)
+  (let ((init-base-name (file-name-nondirectory ledger-init-file-name)))
+    (if (get-buffer init-base-name) ;; init file already loaded, parse it and leave it
+	(ledger-init-parse-initialization init-base-name)
+       (when (and ledger-init-file-name
+		  (file-exists-p ledger-init-file-name)
+		  (file-readable-p ledger-init-file-name))
+	 (find-file-noselect ledger-init-file-name)
+	 (setq ledger-environment-alist
+	       (ledger-init-parse-initialization init-base-name))
+	 (kill-buffer init-base-name)))))
+
+(provide 'ledger-init)
+
+;;; ledger-init.el ends here