;; tt-mode.el --- Emacs major mode for editing Template Toolkit files
;;
;; Copyright (c) 2002 Dave Cross, all rights reserved.
;;
;; This file may be distributed under the same terms as GNU Emacs.
;;
;; $Id: tt-mode.el 10 2006-09-10 14:53:16Z dave $
;;
;; This file adds simple font highlighting of TT directives when you are 
;; editing Template Toolkit files.
;;
;; I usually give these files an extension of .tt and in order to automatically
;; invoke this mode for these files, I have the following in my .emacs file.
;;
;; (setq load-path
;;      (cons "/home/dave/xemacs" load-path))
;; (autoload 'tt-mode "tt-mode")
;; (setq auto-mode-alist
;;  (append '(("\\.tt$" . tt-mode))  auto-mode-alist ))
;;
;; Something similar may well work for you.
;;
;; Author: Dave Cross <dave@dave.org.uk>
;;
;; 
;; $Log$
;; Revision 1.1  2006/01/10 21:49:53  dave
;; Initial revision
;;
;; Revision 1.6  2004/01/30 12:32:50  dave
;; Added (previously missing) FOR directive to list of keywords.
;; Added support for TT comments.
;; (Thanks to Sam Vilian for these fixes)
;;
;; Revision 1.5  2002/06/16 10:01:24  dave
;; A final fix to the [% ... %] regex. It now seems to to everything
;; I want :)
;;
;; Revision 1.4  2002/06/15 20:00:13  dave
;; Added list of TT keywords
;;
;; Revision 1.3  2002/06/15 15:08:03  dave
;; Added a bit more complexity to the regex
;;
;; Revision 1.2  2002/06/15 14:35:26  dave
;; Improved regex to match [% ... %]
;;
;; Revision 1.1.1.1  2002/06/15 13:51:56  dave
;; Initial Version
;;
;;

(require 'font-lock)

(defvar tt-mode-hook nil
  "List of functions to call when entering TT mode")

(defvar tt-keywords "\\bGET\\b\\|\\bCALL\\b\\|\\bSET\\b\\|\\bDEFAULT\\b\\|\\bINSERT\\b\\|\\bINCLUDE\\b\\|\\bBLOCK\\b\\|\\bEND\\b\\|\\bPROCESS\\b\\|\\bWRAPPER\\b\\|\\bIF\\b\\|\\bUNLESS\\b\\|\\bELSIF\\b\\|\\bELSE\\b\\|\\bSWITCH\\b\\|\\bCASE\\b\\|\\bFOR\\b\\|\\bFOREACH\\b\\|\\bWHILE\\b\\|\\bFILTER\\b\\|\\bUSE\\b\\|\\bMACRO\\b\\|\\bPERL\\b\\|\\bRAWPERL\\b\\|\\bTRY\\b\\|\\bTHROW\\b\\|\\bCATCH\\b\\|\\bFINAL\\b\\|\\bLAST\\b\\|\\bRETURN\\b\\|\\bSTOP\\b\\|\\bCLEAR\\b\\|\\bMETA\\b\\|\\bTAGS")

(defvar tt-font-lock-keywords 
   (list
    ;; Fontify [& ... &] expressions
    '("\\(\\[%[-+]?\\)\\(.+?\\)\\([-+]?%\\]\\)"  
      (1 font-lock-string-face t)
      (2 font-lock-variable-name-face t)
      (3 font-lock-string-face t))
    ;; Look for keywords within those expressions
    (list (concat
	   "\\[%[-+]? *\\("
	   tt-keywords 
	   "\\)") 
	  1 font-lock-keyword-face t)
    '("\\[% *\\(#.*?\\)%\\]"
      (1 font-lock-comment-face t))
    )
  "Expressions to font-lock in tt-mode.")

(defun tt-mode ()
  "Major mode for editing Template Toolkit files"
  (interactive)
  (kill-all-local-variables)
  (setq major-mode 'tt-mode)
  (setq mode-name "TT")
  (if (string-match "Xemacs" emacs-version)
      (progn
	(make-local-variable 'font-lock-keywords)
	(setq font-lock-keywords tt-font-lock-keywords))
    ;; Emacs
    (make-local-variable 'font-lock-defaults)
    (setq font-lock-defaults '(tt-font-lock-keywords nil t))
    )
  (font-lock-mode)
  (run-hooks tt-mode-hook))

(provide 'tt-mode)

;; tt-mode.el ends here