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;;; ravi-init-function.el --- functionality

;; Copyright (C) 2013

;; Author:  <ravi@nero.lan>
;; Keywords:

;; 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 3 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, see <http://www.gnu.org/licenses/>.

;;; Commentary:

;; Enable functionality

;;; Code:

;; Enable emacs functionality that is disabled by default
(setq disabled-command-function nil)
;(setq enable-recursive-minibuffers t)

;; Use emacsclient from other programs
(require 'server)
(unless (server-running-p) (server-start))

;; Stolen from prelude
(defadvice server-visit-files (before parse-numbers-in-lines (files proc &optional nowait) activate)
  "Open file with emacsclient with cursors positioned on requested line.
Most of console-based utilities prints filename in format
'filename:linenumber'. So you may wish to open filename in that format.
Just call:
emacsclient filename:linenumber
and file 'filename' will be opened and cursor set on line 'linenumber'"
  (ad-set-arg 0
              (mapcar (lambda (fn)
                        (let ((name (car fn)))
                          (if (string-match "^\\(.*?\\):\\([0-9]+\\)\\(?::\\([0-9]+\\)\\)?$" name)
                              (cons
                               (match-string 1 name)
                               (cons (string-to-number (match-string 2 name))
                                     (string-to-number (or (match-string 3 name) ""))))
                            fn))) files)))

;; Combined launcher and toggle-maps
(defun ravi/setup-toggle-launcher-map ()
  (bind-keys :map ctl-x-map
             :prefix-map ravi/setup-toggle-launcher-map
             :prefix-docstring "Launcher/toggle map"
             :prefix "t"

             ;; Toggles
             ("c" . column-number-mode)
             ("e" . toggle-debug-on-error)
             ("f" . auto-fill-mode)
             ("l" . toggle-truncate-lines)
             ("q" . toggle-debug-on-quit)
             ;; Generalized version of `read-only-mode'.
             ("r" . dired-toggle-read-only)
             ("w" . whitespace-mode)

             ;; Launchers
             ("P" . package-list-packages)
             ("p" . proced)
             ("d" . ediff-buffers)
             ("F" . find-dired))
  (autoload 'dired-toggle-read-only "dired" nil t)
  ;; (add-to-list 'guide-key/guide-key-sequence "C-x t")
  )
(ravi/setup-toggle-launcher-map)

;; Start something going on saving a file
(use-package firestarter
  :config
  (progn
    (firestarter-mode 1))
  :diminish firestarter-mode
  :ensure t)

(defun ravi/find-path-name-relative-to-project-root ()
  "Find path of current buffer file relative to project root"
  (interactive)
  (let* ((root-dir (and (buffer-file-name)
                        (or (and (fboundp 'magit-get-top-dir) (magit-get-top-dir))
                            (and (fboundp 'vc-root-dir) (vc-root-dir))
                            (locate-dominating-file (buffer-file-name) ".git")
                            (locate-dominating-file (buffer-file-name) dir-locals-file))))
         (relative-name (and root-dir
                             (file-relative-name (buffer-file-name) root-dir))))
    relative-name))

(defun ravi/apply-shell-command-relative-to-project (command-template)
  "Apply shell command relative to project

COMMAND-TEMPLATE should be a string with the following substitutions allowed:

%p: full path to file name

%r: path relative to project root

%f: file name

%N: unquoted relative path name (should be used extremely carefully)
"
  (interactive "sEnter command template: ")
  (let* ((path (shell-quote-argument (or (buffer-file-name) "")))
         (rel-name (ravi/find-path-name-relative-to-project-root))
         (rel-path (shell-quote-argument (or rel-name "")))
         (file (shell-quote-argument (file-name-nondirectory (or path ""))))
         (cmd (and rel-name
                   (format-spec command-template
                                (format-spec-make ?p path ?r rel-path ?f file ?N rel-name)))))
    (if cmd
        (shell-command cmd)
      (if (not (buffer-file-name))
          (message "Not in a file buffer")
        (message "Unable to find project root")))))

(defvar ravi/shell-command-relative nil
  "Variable to set in `dir-locals-file' for use with
`ravi/apply-shell-command-relative-to-project-auto'. See
`ravi/apply-shell-command-relative-to-project' for more
details.")

(defun ravi/apply-shell-command-relative-to-project-auto ()
  "Apply shell command relative to project from variable
`ravi/shell-command-relative'. See
`ravi/apply-shell-command-relative-to-project' for more details.
"
  (interactive)
  (when (and (stringp ravi/shell-command-relative)
             (> (length ravi/shell-command-relative) 0))
    (ravi/apply-shell-command-relative-to-project ravi/shell-command-relative)))

(provide 'ravi-init-function)
;;; ravi-init-function.el ends here