code.delx.au - gnu-emacs/blob - lisp/progmodes/m4-mode.el

   1 ;;; m4-mode.el --- m4 code editing commands for Emacs
   2
   3 ;;; Copyright (C) 1996, 1997 Free Software Foundation, Inc.
   4
   5 ;; Author: Andrew Csillag <drew_csillag@geocities.com>
   6 ;; Maintainer: Andrew Csillag <drew_csillag@geocities.com>
   7 ;; Keywords: languages, faces
   8
   9 ;; This file is part of GNU Emacs.
  10
  11 ;; GNU Emacs is free software; you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation; either version 2, or (at your option)
  14 ;; any later version.
  15
  16 ;; GNU Emacs is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  24 ;; Boston, MA 02111-1307, USA.
  25
  26 ;;; Commentary:
  27
  28 ;; A smart editing mode for m4 macro definitions.  It seems to have most of the
  29 ;; syntax right (sexp motion commands work, but function motion commands don't).
  30 ;; It also sets the font-lock syntax stuff for colorization
  31
  32 ;; To Do's:
  33
  34 ;; * want to make m4-m4-(buffer|region) look sorta like M-x compile look&feel ?
  35 ;; * sexp motion commands don't seem to work right
  36
  37 ;;; Thanks:
  38 ;;;         to Akim Demaille and Terry Jones for the bug reports
  39 ;;;         to Simon Marshall for the regexp tip
  40 ;;;         to Martin Buchholz for some general fixes
  41
  42 ;;; Code:
  43
  44 (defgroup m4 nil
  45   "m4 code editing commands for Emacs."
  46   :prefix "m4-"
  47   :group 'languages)
  48
  49 (defcustom m4-program
  50   (cond
  51    ((file-exists-p "/usr/local/bin/m4") "/usr/local/bin/m4")
  52    ((file-exists-p "/usr/bin/m4") "/usr/bin/m4")
  53    ((file-exists-p "/bin/m4") "/bin/m4")
  54    ((file-exists-p "/usr/ccs/bin/m4") "/usr/ccs/bin/m4")
  55    ( t "m4")
  56    )
  57   "File name of the m4 executable."
  58   :type 'file
  59   :group 'm4)
  60
  61 ;;options to m4
  62 (defcustom m4-program-options nil
  63   "Options to pass to `m4-program'."
  64   :type '(repeat string)
  65   :group 'm4)
  66
  67 ;;to use --prefix-builtins, you can use
  68 ;;(defconst m4-program-options '("-P"))
  69 ;;or
  70 ;;(defconst m4-program-options '("--prefix-builtins"))
  71
  72 (defvar m4-font-lock-keywords
  73   `(
  74     ("\\(\\b\\(m4_\\)?dnl\\b\\|^\\#\\).*$" . font-lock-comment-face)
  75 ;    ("\\(\\bdnl\\b\\|\\bm4_dnl\\b\\|^\\#\\).*$" . font-lock-comment-face)
  76     ("\\$[*#@0-9]" . font-lock-variable-name-face)
  77     ("\\\$\\\@" . font-lock-variable-name-face)
  78     ("\\\$\\\*" . font-lock-variable-name-face)
  79     ("\\b\\(builtin\\|change\\(com\\|quote\\|word\\)\\|d\\(e\\(bug\\(file\\|mode\\)\\|cr\\|f\\(ine\\|n\\)\\)\\|iv\\(ert\\|num\\)\\|nl\\|umpdef\\)\\|e\\(rrprint\\|syscmd\\|val\\)\\|f\\(ile\\|ormat\\)\\|gnu\\|i\\(f\\(def\\|else\\)\\|n\\(c\\(lude\\|r\\)\\|d\\(ex\\|ir\\)\\)\\)\\|l\\(en\\|ine\\)\\|m\\(4\\(exit\\|wrap\\)\\|aketemp\\)\\|p\\(atsubst\\|opdef\\|ushdef\\)\\|regexp\\|s\\(hift\\|include\\|ubstr\\|ys\\(cmd\\|val\\)\\)\\|tra\\(ceo\\(ff\\|n\\)\\|nslit\\)\\|un\\(d\\(efine\\|ivert\\)\\|ix\\)\\)\\b" . font-lock-keyword-face)
  80     ("\\b\\(m4_\\(builtin\\|change\\(com\\|quote\\|word\\)\\|d\\(e\\(bug\\(file\\|mode\\)\\|cr\\|f\\(ine\\|n\\)\\)\\|iv\\(ert\\|num\\)\\|nl\\|umpdef\\)\\|e\\(rrprint\\|syscmd\\|val\\)\\|f\\(ile\\|ormat\\)\\|i\\(f\\(def\\|else\\)\\|n\\(c\\(lude\\|r\\)\\|d\\(ex\\|ir\\)\\)\\)\\|l\\(en\\|ine\\)\\|m\\(4\\(_undefine\\|exit\\|wrap\\)\\|aketemp\\)\\|p\\(atsubst\\|opdef\\|ushdef\\)\\|regexp\\|s\\(hift\\|include\\|ubstr\\|ys\\(cmd\\|val\\)\\)\\|tra\\(ceo\\(ff\\|n\\)\\|nslit\\)\\|undivert\\)\\)\\b" . font-lock-keyword-face)
  81     "Default font-lock-keywords for m4 mode.")
  82 )
  83
  84 (defcustom m4-mode-hook nil
  85   "*Hook called by `m4-mode'."
  86   :type 'hook
  87   :group 'm4)
  88
  89 ;;this may still need some work
  90 (defvar m4-mode-syntax-table nil
  91   "syntax table used in m4 mode")
  92 (setq m4-mode-syntax-table (make-syntax-table))
  93 (modify-syntax-entry ?` "('" m4-mode-syntax-table)
  94 (modify-syntax-entry ?' ")`" m4-mode-syntax-table)
  95 (modify-syntax-entry ?# "<\n" m4-mode-syntax-table)
  96 (modify-syntax-entry ?\n ">#" m4-mode-syntax-table)
  97 (modify-syntax-entry ?{  "_" m4-mode-syntax-table)
  98 (modify-syntax-entry ?}  "_" m4-mode-syntax-table)
  99 (modify-syntax-entry ?*  "w" m4-mode-syntax-table)
 100 (modify-syntax-entry ?_  "w" m4-mode-syntax-table)
 101 (modify-syntax-entry ?\"  "w" m4-mode-syntax-table)
 102 (modify-syntax-entry ?\"  "w" m4-mode-syntax-table)
 103
 104 (defvar m4-mode-map
 105   (let ((map (make-sparse-keymap)))
 106     (define-key map "\C-c\C-b" 'm4-m4-buffer)
 107     (define-key map "\C-c\C-r" 'm4-m4-region)
 108     (define-key map "\C-c\C-c" 'comment-region)
 109     map))
 110
 111 (defun m4-m4-buffer ()
 112   "send contents of the current buffer to m4"
 113   (interactive)
 114   (shell-command-on-region (point-min) (point-max) m4-program "*m4-output*"
 115                            nil)
 116   (switch-to-buffer-other-window "*m4-output*"))
 117
 118 (defun m4-m4-region ()
 119   "send contents of the current region to m4"
 120   (interactive)
 121   (shell-command-on-region (point) (mark) m4-program "*m4-output*" nil)
 122   (switch-to-buffer-other-window "*m4-output*"))
 123
 124 ;;;###autoload
 125 (defun m4-mode ()
 126   "A major mode to edit m4 macro files.
 127 \\{m4-mode-map}
 128 "
 129   (interactive)
 130   (kill-all-local-variables)
 131   (use-local-map m4-mode-map)
 132
 133   (make-local-variable 'comment-start)
 134   (setq comment-start "#")
 135   (make-local-variable 'parse-sexp-ignore-comments)
 136   (setq parse-sexp-ignore-comments t)
 137
 138
 139   (make-local-variable  'font-lock-defaults)
 140   (setq major-mode 'm4-mode
 141         mode-name "m4"
 142         font-lock-defaults '(m4-font-lock-keywords nil)
 143         )
 144   (set-syntax-table m4-mode-syntax-table)
 145   (run-hooks 'm4-mode-hook))
 146
 147 (provide 'm4-mode)
 148 ;;stuff to play with for debugging
 149 ;(char-to-string (char-syntax ?`))
 150
 151 ;;;how I generate the nasty looking regexps at the top
 152 ;;;(make-regexp '("builtin" "changecom" "changequote" "changeword" "debugfile"
 153 ;;;               "debugmode" "decr" "define" "defn" "divert" "divnum" "dnl"
 154 ;;;               "dumpdef" "errprint" "esyscmd" "eval" "file" "format" "gnu"
 155 ;;;               "ifdef" "ifelse" "include" "incr" "index" "indir" "len" "line"
 156 ;;;               "m4exit" "m4wrap" "maketemp" "patsubst" "popdef" "pushdef" "regexp"
 157 ;;;               "shift" "sinclude" "substr" "syscmd" "sysval" "traceoff" "traceon"
 158 ;;;               "translit" "undefine" "undivert" "unix"))
 159 ;;;(make-regexp '("m4_builtin" "m4_changecom" "m4_changequote" "m4_changeword"
 160 ;;;               "m4_debugfile" "m4_debugmode" "m4_decr" "m4_define" "m4_defn"
 161 ;;;               "m4_divert" "m4_divnum" "m4_dnl" "m4_dumpdef" "m4_errprint"
 162 ;;;               "m4_esyscmd" "m4_eval" "m4_file" "m4_format" "m4_ifdef" "m4_ifelse"
 163 ;;;               "m4_include" "m4_incr" "m4_index" "m4_indir" "m4_len" "m4_line"
 164 ;;;               "m4_m4exit" "m4_m4wrap" "m4_maketemp" "m4_patsubst" "m4_popdef"
 165 ;;;               "m4_pushdef" "m4_regexp" "m4_shift" "m4_sinclude" "m4_substr"
 166 ;;;               "m4_syscmd" "m4_sysval" "m4_traceoff" "m4_traceon" "m4_translit"
 167 ;;;               "m4_m4_undefine" "m4_undivert"))
 168
 169 ;;; m4.el ends here