;; Date: Aug 19, 2010
;; Author: Collin J. Doering
;; Description: Emacs configuration file (in emacs lisp)

;; stop renaming of saved files to filename~ which ends up breaking hardlinks
(setq backup-by-copying-when-linked t)

;; fixes color output issues; see: http://wiki.archlinux.org/index.php/Emacs#Colored_output_issues
(add-hook 'shell-mode-hook 'ansi-color-for-comint-mode-on)

;; Automatically open some config files with an associated major mode
;; Note: regexp's used to match buffer filenames are intentionally left
;;       unbounded (without '$') to catch cases where the filename may
;;       take the format: filename~
(add-to-list 'auto-mode-alist '("\\.conkerorrc" . javascript-mode))
(add-to-list 'auto-mode-alist '("\\.xmobarrc" . haskell-mode))
(add-to-list 'auto-mode-alist '("\\.screenrc" . conf-mode))
(add-to-list 'auto-mode-alist '("\\.stumpwmrc" . lisp-mode))

;; bind M-g to M-x goto-line
(global-set-key "\M-g" 'goto-line)

;; Make C-x O cycle backwards a pane (oposite to C-x o)
(global-set-key "\C-xO" #'(lambda ()
			    (interactive)
			    (other-window -1)))

;; Thanks to lauren michelle for this one
(defun pretty-lambdas ()
  (font-lock-add-keywords
   nil `(("(\\(lambda\\>\\)"
	  (0 (progn (compose-region (match-beginning 1) (match-end 1)
				    ,(make-char 'greek-iso8859-7 107))
		    nil))))))

;; adds the given function mode to each element of the given-hooks
(defun activate-mode-with-hooks (mode given-hooks)
  (while given-hooks
    (add-hook (car given-hooks)
	      mode)
    (setq given-hooks (cdr given-hooks))))

;; Make lambda appear as the greek character
(activate-mode-with-hooks 'pretty-lambdas '(scheme-mode-hook lisp-mode-hook lisp-interaction-mode geiser-repl-mode python-mode emacs-lisp-mode))

;; linum mode for pretty line numbering
(require 'linum)

;; right justify the numbers and add a space between them and the text in the given buffer
(setq linum-format
      (lambda (line)
	(propertize (format
		     (let ((w (length (number-to-string
				       (count-lines (point-min) (point-max))))))
		       (concat "%" (number-to-string w) "d "))
		     line)
		    'face 'linum)))

;; code-modes is a list of mode hooks (for programming langs only)
(defvar code-modes '(scheme-mode-hook emacs-lisp-mode-hook c-mode-hook c++-mode-hook python-mode-hook lua-mode-hook haskell-mode-hook php-mode-hook perl-mode-hook lisp-mode-hook ruby-mode-hook sh-mode-hook))

;; activate linum-mode in all buffers used for programming
(activate-mode-with-hooks (lambda () (linum-mode 1)) code-modes)

;; activate flyspell-prog-mode for all buffers used for programming
(activate-mode-with-hooks 'flyspell-prog-mode code-modes)

;; *DEPRECIATED* as of emacs24; when it goes live remove this as well as package emacs-color-theme
;; load color-theme and initialize
;;(require 'color-theme)
;;(color-theme-initialize)
;; use a global color theme
;;(color-theme-tty-dark)
;; make color-theme not applied globally and not cumunitive
;;(setq color-theme-is-cumulative nil)
;;(setq color-theme-is-global nil)
;; given a frame colorizes the frame
;; if its window-system is X Windows the tty-dark theme will be applied otherwise it will be colorized tty-dark
;;(defun apply-color-theme (frame)
;;  (select-frame frame)
;;  (if (eq (window-system frame) 'x)
;;      (color-theme-tty-dark)
;;    (color-theme-tty-dark)))
;; add the apply-color-theme function (hook) to be executed on the creation of a new frame
;;(add-hook 'after-make-frame-functions 'apply-color-theme)

;; Use the built-in themeing in emacs24
(load-theme 'manoj-dark)

;; Set default tramp method to ssh (for security purposes)
(setq tramp-default-method "ssh")

;; Setup ibuffer (interactive buffer)
(global-set-key "\C-x\C-b" 'ibuffer)
(autoload 'ibuffer "ibuffer" "List buffers." t)

;; Require ibuffer extentions (used for ibuffer-never-show-predicates)
(require 'ibuf-ext)
(add-to-list 'ibuffer-never-show-predicates "^\\*slime-events\\*$")
(add-to-list 'ibuffer-never-show-predicates "^\\*Completions\\*$")
(add-to-list 'ibuffer-never-show-predicates "^\\*tramp/.*\\*$")

;; Filter ibuffers (similar to gnus)
(setq ibuffer-saved-filter-groups
      (quote (("default"
	       ("dired" (mode . dired-mode))
	       ("config" (or
			  (name . "^\\.xinitrc$")
			  (name . "^\\.bashrc$")
			  (name . "^\\.bash_profile$")
			  (name . "^\\.zshrc$")
			  (name . "^xmonad\\.hs$")
			  (name . "^\\.emacs$")
			  (name . "^\\.gnus$")
			  (name . "^\\.xmobarrc")
			  (name . "^\\.Xdefaults$")
			  (name . "^\\.screenrc$")
			  (name . "^\\.xbindkeysrc$")))
	       ("code" (or
			(mode . c-mode)
			(mode . c++-mode)
			(mode . perl-mode)
			(mode . python-mode)
			(mode . ruby-mode)
			(mode . emacs-lisp-mode)
			(mode . lisp-mode)
			(mode . sh-mode)
			(mode . scheme-mode)
			(mode . php-mode)
			(mode . xml-mode)))
	       ("REPL" (or
			(mode . geiser-mode)
			(mode . slime-repl-mode)
			(name . "^\\*inferior-lisp\\*$")
			(name . "^\\* Racket REPL \\*$")))
	       ("planner" (or
			   (name . "^\\*Calendar\\*$")
			   (name . "^diary$")
			   (mode . muse-mode)))
	       ("emacs" (or
			 (name . "^\\*scratch\\*$")
			 (name . "^\\*Messages\\*$")))
	       ("gnus" (or
			(mode . message-mode)
			(mode . bbdb-mode)
			(mode . mail-mode)
			(mode . gnus-group-mode)
			(mode . gnus-summary-mode)
			(mode . gnus-article-mode)
			(name . "^\\.bbdb$")
			(name . "^\\.newsrc-dribble")))))))

(add-hook 'ibuffer-mode-hook
	  (lambda ()
	    (ibuffer-switch-to-saved-filter-groups "default")))

;; setup html renderer w3m
(require 'w3m-load)
(setq browse-url-browser-function 'w3m-browse-url)
(autoload 'w3m-browse-url "w3m" "Ask a WWW browser to show a URL." t)

;; setup magit for git *DISABLED*
;;(autoload 'magit-status magit nil t)
;;(require 'magit)

;; setup php-mode
(autoload 'php-mode "php-mode.el" "Php mode." t)
(setq auto-mode-alist (append '(("/*.\.php[345]?$" . php-mode)) auto-mode-alist))

;; Set default lisp program
(setq inferior-lisp-program "/usr/bin/sbcl")

;; Since there is no support for the kawa implementation of scheme
(defun run-kawa ()
  "Run Kawa Scheme in an Emacs buffer."
  (interactive)
  (require 'cmuscheme)
  (let ((scheme-program-name "/usr/bin/kawa"))
    (run-scheme scheme-program-name)))

;; Set usable lisp implementations
(setq slime-lisp-implementations
      '((sbcl ("/usr/bin/sbcl" ""))
	(clisp ("/usr/bin/clisp" "-K base"))
	(clojure ("/usr/bin/clj" ""))))

;; Function to start and/or connect to slime
(defun start-slime ()
  (unless (slime-connected-p)
    (save-excursion (slime))))

;; Setup slime mode
(add-to-list 'load-path "/usr/share/emacs/site-lisp/slime/")
(require 'slime)
(slime-setup '(slime-fancy))

;; Setup clojure mode
(add-to-list 'load-path "/usr/share/emacs/site-lisp/clojure-mode")
(require 'clojure-mode)

;; Setup swank-clojure-mode
(add-to-list 'load-path "/usr/share/emacs/site-lisp/swank-clojure")
(require 'swank-clojure)

(add-hook 'clojure-mode-hook
          '(lambda ()
             (define-key clojure-mode-map "\C-c\C-e" 'lisp-eval-last-sexp)
             (define-key clojure-mode-map "\C-x\C-e" 'lisp-eval-last-sexp)))
(eval-after-load "slime"
  `(progn
     (require 'assoc)
     (setq swank-clojure-classpath
           (list "/usr/share/clojure/clojure.jar"
                 "/usr/share/clojure/clojure-contrib.jar"
                 "/usr/share/emacs/site-lisp/swank-clojure/src"))
     (aput 'slime-lisp-implementations 'clojure
           (list (swank-clojure-cmd) :init 'swank-clojure-init))))

;; Setup emacs-org-mode
(add-to-list 'auto-mode-alist '("\\.org\\'" . org-mode))
(add-hook 'org-mode-hook 'turn-on-font-lock) ; not needed when global-font-lock-mode is on
(global-set-key "\C-cl" 'org-store-link)
(global-set-key "\C-ca" 'org-agenda)
(global-set-key "\C-cb" 'org-iswitchb)

;; Setup emacs-haskell-mode
(load "/usr/share/emacs/site-lisp/haskell-mode/haskell-site-file")
(add-hook 'haskell-mode-hook 'turn-on-haskell-doc-mode)
(add-hook 'haskell-mode-hook 'turn-on-haskell-indentation)
;;(add-hook 'haskell-mode-hook 'turn-on-haskell-indent)
;;(add-hook 'haskell-mode-hook 'turn-on-haskell-simple-indent)

;; Set inferior haskell default executable
(setq haskell-program-name "/usr/bin/ghci")

;; Setup emacs-python-mode
(autoload 'python-mode "/usr/share/emacs/site-lisp/python-mode.el" "Python mode." t)
(setq auto-mode-alist (append '(("/*.\.py$" . python-mode)) auto-mode-alist))

;; Setup emacs-lua-mode
(setq auto-mode-alist (cons '("\.lua$" . lua-mode) auto-mode-alist))
(autoload 'lua-mode "lua-mode" "Lua editing mode." t)

;; Setup emacs-erlang-mode
(setq erlang-root-dir "/usr/lib/erlang")
(setq exec-path (cons "/usr/lib/erlang/bin" exec-path))
(require 'erlang-start)

;; Setup enhanced scheme/racket mode consisting of geiser, quack and paredit
(require 'geiser-install)
;(require 'quack)
(require 'paredit)
(defvar paredit-hooks '(lisp-mode-hook lisp-interaction-mode-hook emacs-lisp-mode scheme-mode-hook c-mode-hook c++-mode-hook python-mode-hook))

;; Apply paredit-mode to modes listed in paredit-hooks
(activate-mode-with-hooks (lambda () (paredit-mode 1)) paredit-hooks)

;; Highlight paren's in given modes [to apply globally do (show-paren-mode 1)]
(activate-mode-with-hooks (lambda () (show-paren-mode 1)) paredit-hooks)

;; upcomming functionallity: toggle paredit-mode due to annoying things like wrapping parens when a mistake is made
;; known issue..if paredit-mode is turned on when there are unbalanced parens an error is reported
(defun toggle-paredit-mode ()
  (let ((active-minor-modes (list)))
    (mapatoms (lambda (sym)
		(when (and (symbolp sym) (assq sym minor-mode-alist) (symbol-value sym))
		  (push sym active-minor-modes))))
    (if (member 'paredit-mode active-minor-modes) (paredit-mode -1) (paredit-mode 1))))

(setq geiser-repl-use-other-window nil)
(setq geiser-active-implementations '(racket))

;; setup pastebin.el for use with pastebin.com
(require 'pastebin)

;; Make hs-minor-mode act like org-mode for code folding
;;(add-to-list 'load-path "/usr/share/emacs/site-lisp/hideshow-org")
(require 'hideshow-org)
(global-set-key "\C-ch" 'hs-org/minor-mode)

;; Add automatic activation of hs-org/minor-mode in the below major-modes
(add-hook 'c-mode-common-hook 'hs-org/minor-mode)
(add-hook 'emacs-lisp-mode-hook 'hs-org/minor-mode)
(add-hook 'java-mode-hook 'hs-org/minor-mode)
(add-hook 'lisp-mode-hook 'hs-org/minor-mode)
(add-hook 'sh-mode-hook 'hs-org/minor-mode)
(add-hook 'python-mode-hook 'hs-org/minor-mode)
(add-hook 'scheme-mode-hook 'hs-org/minor-mode)

;; Setup fancy auto-complete
(add-to-list 'load-path "/usr/share/emacs/site-lisp/auto-complete")
(require 'auto-complete-config)
(add-to-list 'ac-dictionary-directories "/usr/share/emacs/site-lisp/auto-complete/ac-dict")
(ac-config-default)
 
;; Enable flyspell-mode
(ac-flyspell-workaround)
;; Known Bug: flyspell-mode doesn't play nice with auto-complete-mode
;;(flyspell-mode)

;; Enable autoinsert feature to automagically insert 
(require 'autoinsert)
(auto-insert-mode)  ;;; Adds hook to find-files-hook
(setq auto-insert-directory "~/.emacs.d/templates/") ;;; Or use custom, *NOTE* Trailing slash important
(setq auto-insert-query nil) ;;; If you don't want to be prompted before insertion

;; auto-insert options template and auto-completion
(add-hook 'find-file-hooks 'auto-insert)
(setq auto-insert-directory (concat (getenv "HOME") "/.emacs.d/templates/"))
(setq auto-insert-alist
      '(("\\.c$" . ["c-template.c" auto-update-generic-template])
	("\\.\(cc\|cpp\)$" . ["cpp-template.c" auto-update-generic-template])
	("\\.sh$" . ["shell-template.sh" auto-update-generic-template])
	("\\.rkt$" . ["racket-template.rkt" auto-update-generic-template])
	("\\.scm$" . ["scheme-template.scm" auto-update-generic-template])
	("\\.clj$" . ["clojure-template.clj" auto-update-generic-template])
	("\\.lisp$" . ["lisp-template.lisp" auto-update-generic-template])
	("\\.el$" . ["emacs-lisp-template.el" auto-update-generic-template])
	("\\.hs$" . ["haskell-template.hs" auto-update-generic-template])
	("\\.py$" . ["python-template.py" auto-update-generic-template])))
(setq auto-insert 'other)

(defun auto-update-generic-template ()
  (save-excursion
    ;; Replace @!@FILENAME@!@ with file name sans suffix
    (while (search-forward "@!@FILENAME@!@" nil t)
      (save-restriction
	(narrow-to-region (match-beginning 0) (match-end 0))
	(replace-match (file-name-sans-extension (file-name-nondirectory buffer-file-name)) t))))
  (save-excursion
    ;; Replace @!@FILE@!@ with file name
    (while (search-forward "@!@FILE@!@" nil t)
      (save-restriction
	(narrow-to-region (match-beginning 0) (match-end 0))
	(replace-match (file-name-nondirectory buffer-file-name) t))))
  (save-excursion
    ;; replace @!@DATE@!@ with today's date
    (while (search-forward "@!@DATE@!@" nil t)
      (save-restriction
	(narrow-to-region (match-beginning 0) (match-end 0))
	(replace-match "")
	(insert-date))))
  (save-excursion
    ;; Replace @!@YEAR@!@ with the current year
    (while (search-forward "@!@YEAR@!@" nil t)
      (save-restriction
	(narrow-to-region (match-beginning 0) (match-end 0))
	(replace-match (format-time-string "%Y" (current-time)))))))

;; Insert current date at cursor in the currently active buffer
(defun insert-date ()
  "Insert today's date into buffer"
  (interactive)
  (insert (format-time-string "%b %e, %Y" (current-time))))

(defun open-scratch-buffer ()
  "Opens the scratch buffer; if none exists creates one."
  (interactive)
  (let ((scratch-buffer (get-buffer "*scratch*")))
    (if (null scratch-buffer) (progn (get-buffer-create "*scratch*")
				     (insert initial-scratch-message)
				     (lisp-interaction-mode)))
    (switch-to-buffer "*scratch*")))

;; Bind a key to grab a scratchpad
(global-set-key "\C-x4s" 'open-scratch-buffer)

;; Bind a key to switch to eshell
(global-set-key "\C-x4e" 'eshell)

;; Toggles windows split orientation of 2 adjecent windows
;; Thanks to http://www.emacswiki.org/cgi-bin/wiki?ToggleWindowSplit
(defun toggle-window-split ()
  (interactive)
  (if (= (count-windows) 2)
      (let* ((this-win-buffer (window-buffer))
	     (next-win-buffer (window-buffer (next-window)))
	     (this-win-edges (window-edges (selected-window)))
	     (next-win-edges (window-edges (next-window)))
	     (this-win-2nd (not (and (<= (car this-win-edges)
					 (car next-win-edges))
				     (<= (cadr this-win-edges)
					 (cadr next-win-edges)))))
	     (splitter
	      (if (= (car this-win-edges)
		     (car (window-edges (next-window))))
		  'split-window-horizontally
		'split-window-vertically)))
	(delete-other-windows)
	(let ((first-win (selected-window)))
	  (funcall splitter)
	  (if this-win-2nd (other-window 1))
	  (set-window-buffer (selected-window) this-win-buffer)
	  (set-window-buffer (next-window) next-win-buffer)
	  (select-window first-win)
	  (if this-win-2nd (other-window 1))))))

;; Assign keybinding to toggle split orientation of 2 adjacent windows
(define-key ctl-x-4-map "t" 'toggle-window-split)

;; Force ediff sessions to run in the same frame
(setq ediff-window-setup-function 'ediff-setup-windows-plain)

;; Remove menu-bar
(menu-bar-mode -1)

;; Remove tool-bar
(tool-bar-mode -1)

;; Remove scroll bars
(scroll-bar-mode -1)

;; Stop startup screen
(setq inhibit-startup-screen t)

;; Set some eshell options
(setq eshell-scroll-to-bottom-on-input t)
;; *BROKEN*
;;(setq eshell-scroll-to-bottom-on-output t)

(defun eshell/clear ()
  "04Dec2001 - sailor, to clear the eshell buffer."
  (interactive)
  (let ((inhibit-read-only t))
    (erase-buffer)))

;; Set repos for package.el
(setq package-archives '(("ELPA" . "http://tromey.com/elpa/") 
                          ("gnu" . "http://elpa.gnu.org/packages/")
                          ("marmalade" . "http://marmalade-repo.org/packages/")))

(custom-set-variables
 ;; custom-set-variables was added by Custom.
 ;; If you edit it by hand, you could mess it up, so be careful.
 ;; Your init file should contain only one such instance.
 ;; If there is more than one, they won't work right.
 '(org-agenda-files nil)
 '(quack-default-program "racket")
 '(quack-fontify-style (quote plt))
 '(quack-programs (quote ("mzscheme" "bigloo" "csi" "csi -hygienic" "gosh" "gracket" "gsi" "gsi ~~/syntax-case.scm -" "guile" "kawa" "mit-scheme" "racket" "racket -il typed/racket" "rs" "scheme" "scheme48" "scsh" "sisc" "stklos" "sxi")))
 '(scroll-bar-mode nil)
 '(show-paren-mode t))
(custom-set-faces
 ;; custom-set-faces was added by Custom.
 ;; If you edit it by hand, you could mess it up, so be careful.
 ;; Your init file should contain only one such instance.
 ;; If there is more than one, they won't work right.
 )