;;; rails-log.el --- provide features for Rails log files

;; Copyright (C) 2006 Dmitry Galinsky <dima dot exe at gmail dot com>

;; Authors: Dmitry Galinsky <dima dot exe at gmail dot com>

;; Keywords: ruby rails languages oop

;; $URL$

;; $Id$

;;; License

;; This program 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

;; of the License, or (at your option) any later version.

;; This program 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 this program; if not, write to the Free Software

;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

;;; Code:

(defvar rails-log:last-log nil)

(defun rails-log:files ()

  (directory-files (rails-core:file "log") nil "\\.log$"))

(defun rails-log:buffer-name (log-file)

  (concat "*" log-file "*"))

(defun rails-log:open-file (log-file)

  (let ((buffer (rails-log:buffer-name log-file))

        (current (buffer-name)))

    (unless (get-buffer buffer)

      (get-buffer-create buffer)

      (set-buffer buffer)

      (setq auto-window-vscroll t)

      (rails-minor-mode t)

      (setq buffer-read-only t)

      (set-buffer current)

      (apply-colorize-to-buffer buffer))

    (start-process "tail"

                   buffer

                   "tail"

		   "-n" (message "%d" rails-number-of-lines-shown-when-opening-log-file)

                   "-f" (rails-core:file (concat "log/" log-file)))))

(defun rails-log:open (log-file)

  (interactive

   (list (completing-read "Select log (with autocomplete): "

                          (list->alist (rails-log:files))

                          nil

                          t

                          rails-log:last-log)))

  (setq rails-log:last-log log-file)

  (let ((name (rails-log:buffer-name log-file)))

    (unless (get-buffer name)

      (rails-log:open-file log-file))

    (switch-to-buffer name)

    (recenter t)))

(defun rails-log:open-production ()

  (interactive)

  (rails-log:open "production.log"))

(defun rails-log:open-development ()

  (interactive)

  (rails-log:open "development.log"))

(defun rails-log:open-test ()

  (interactive)

  (rails-log:open "test.log"))

(provide 'rails-log)