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1 ;;; m4-mode.el --- m4 code editing commands for Emacs
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2
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3 ;; Author: Andrew Csillag (drew@staff.prodigy.com)
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4 ;; Maintainer: Andrew Csillag (drew@staff.prodigy.com)
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5 ;; Keywords: languages, faces
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6
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149
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7 ;; This file is part of GNU Emacs.
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8
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9 ;; GNU Emacs is free software; you can redistribute it and/or modify
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10 ;; it under the terms of the GNU General Public License as published by
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11 ;; the Free Software Foundation; either version 2, or (at your option)
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12 ;; any later version.
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13
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14 ;; GNU Emacs is distributed in the hope that it will be useful,
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15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 ;; GNU General Public License for more details.
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18
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19 ;; You should have received a copy of the GNU General Public License
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20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
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21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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22 ;; Boston, MA 02111-1307, USA.
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23
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24 ;;; Commentary:
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25
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26 ;; A smart editing mode for m4 macro definitions. It seems to have most of the
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27 ;; syntax right (sexp motion commands work, but function motion commands don't).
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28 ;; It also sets the font-lock syntax stuff for colorization
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29
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30 ;; By Drew Csillag (drew@staff.prodigy.com)
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31 ;; $Id: m4-mode.el,v 1.4 1997/05/23 01:36:24 steve Exp $
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32
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33 ;; History:
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34
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35 ;; Date Version Who Action
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36 ;; -------- ------- --- ----
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37 ;; 09/13/96 1.0 DC Created
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38 ;; 09/26/96 1.1 DC added syntax table stuff so now matches `'s
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39 ;; now can use C-c C-b to m4 on buffer,C-c C-r for region
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40 ;; added m4-comment-region (C-c C-c)
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41 ;; 09/27/96 1.2 DC Redid header comment
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42 ;; 1.3 DC more cosmetic fixes
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43 ;; 1.4 DC removed m4-comment-region, using comment-region instead
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44 ;; 10/03/96 DC added provide line
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45 ;; 10/24/96 1.5 DC fixed keyword regexp
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46 ;; 10/29/96 1.6 DC added m4_keywords for --prefix-builtins
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47 ;; fixed syntax table so _define_ isn't keywordified
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48 ;; 10/29/96 1.8 DC fixed a problem where comments go fontified incorrectly
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49 ;; if they had quotes in them
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149
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50 ;; 11/21/96 1.9 DC collapsed 4 regexps into 1 and removed a duplicate,
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51 ;; removed a duplicate backslash
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52 ;; 05/16/97 1.10 DC added contributed fixes and enhancements from
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53 ;; Martin Buchholz
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54 ;; Can now specify options to m4 via m4-program-options
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55 ;; Now terminates m4 processes when the buffer send
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56 is
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57 ;; done
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58 ;; dnl and m4_dnl recognized as comment starters
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59
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60 ;; To Do's:
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61
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62 ;; * want to make m4-m4-(buffer|region) look sorta like M-x compile look&feel ?
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63 ;; * sexp motion commands don't seem to work right
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64
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65 ;; to autoload m4 lisp code:
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66 ;; (autoload 'm4-mode "m4-mode" nil t)
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67 ;;
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68 ;; or can use (load "m4-mode") or (require 'm4-mode) to just load it
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69 ;;
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70 ;; to try to "auto-detect" m4 files:
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71 ;; (setq auto-mode-alist
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72 ;; (cons '(".*\\.m4$" . m4-mode)
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73 ;; auto-mode-alist))
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74
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75 ;;; Thanks:
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76 ;;; to Akim Demaille and Terry Jones for the bug reports
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77 ;;; to Simon Marshall for the regexp tip
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78 ;;; to Martin Buchholz for some general fixes
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79
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80 ;;; Code:
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81
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82 ;;path to the m4 program
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83 (defvar m4-program
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84 (cond
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85 ((file-exists-p "/usr/local/bin/m4") "/usr/local/bin/m4")
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86 ((file-exists-p "/usr/bin/m4") "/usr/bin/m4")
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87 ((file-exists-p "/bin/m4") "/bin/m4")
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88 ((file-exists-p "/usr/ccs/bin/m4") "/usr/ccs/bin/m4")
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89 )
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90 )
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91
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92 ;;options to m4
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93 (defconst m4-program-options nil)
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94 ;;to use --prefix-builtins, you can use
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95 ;;(defconst m4-program-options '("-P"))
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96 ;;or
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97 ;;(defconst m4-program-options '("--prefix-builtins"))
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98
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99 ;;thank god for make-regexp.el!
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100 (defvar m4-font-lock-keywords
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101 `(
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102 ("\\(\\bdnl\\b\\|\\bm4_dnl\\b\\|^\\#\\).*$" .
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103 font-lock-comment-face)
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104 ("\\$[*#@0-9]" . font-lock-variable-name-face)
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105
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106 ("\\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"
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107 . font-lock-keyword-face)
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108
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109 ("\\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"
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110 . font-lock-keyword-face)
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111 "default font-lock-keywords")
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112 )
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113
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114 ;;this may still need some work
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115 (defvar m4-mode-syntax-table nil
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116 "syntax table used in m4 mode")
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117 (setq m4-mode-syntax-table (make-syntax-table))
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118 (modify-syntax-entry ?` "('" m4-mode-syntax-table)
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119 (modify-syntax-entry ?' ")`" m4-mode-syntax-table)
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120 (modify-syntax-entry ?# "<\n" m4-mode-syntax-table)
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121 (modify-syntax-entry ?\n ">#" m4-mode-syntax-table)
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122 (modify-syntax-entry ?{ "_" m4-mode-syntax-table)
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123 (modify-syntax-entry ?} "_" m4-mode-syntax-table)
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124 (modify-syntax-entry ?* "." m4-mode-syntax-table)
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125 (modify-syntax-entry ?_ "_" m4-mode-syntax-table)
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126 (modify-syntax-entry ?\" "w" m4-mode-syntax-table)
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127
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128 (defvar m4-mode-map
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129 (let ((map (make-sparse-keymap)))
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130 (define-key map "\C-c\C-b" 'm4-m4-buffer)
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131 (define-key map "\C-c\C-r" 'm4-m4-region)
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132 (define-key map "\C-c\C-c" 'comment-region)
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133 map))
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134
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135 (defun m4-end-m4 (process event)
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136 (cond ((equal event "kill\n") (princ "m4 process done"))
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137 (t (princ
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138 (format "Process: %s had the event `%s'" process event)))))
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139
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140 (defun m4-start-m4 ()
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141 (eval (append (append '(start-process "m4process" "*m4 output*"
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142 m4-program)
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143 m4-program-options) '("-e")))
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144 (set-process-sentinel (get-process "m4process") 'm4-end-m4)
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145 )
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146
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147 (defun m4-m4-buffer ()
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148 "send contents of the current buffer to m4"
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149 (interactive)
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149
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150 (m4-start-m4)
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151 (process-send-region "m4process" (point-min) (point-max))
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152 (process-send-eof "m4process")
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153 (switch-to-buffer-other-window "*m4 output*")
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154 (delete-process "m4process")
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155 )
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156
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157
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158 (defun m4-m4-region ()
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159 "send contents of the current region to m4"
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160 (interactive)
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161 (m4-start-m4)
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162 (process-send-region "m4process" (point) (mark))
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163 (process-send-eof "m4process")
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164 (switch-to-buffer-other-window "*m4 output*")
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165 )
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166
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167 (defun m4-mode ()
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168 "A major-mode to edit m4 macro files
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169 \\{m4-mode-map}
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170 "
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171 (interactive)
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172 (kill-all-local-variables)
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173 (use-local-map m4-mode-map)
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174
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175 (make-local-variable 'comment-start)
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176 (setq comment-start "#")
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177 (make-local-variable 'parse-sexp-ignore-comments)
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178 (setq parse-sexp-ignore-comments t)
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179
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180
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181 (make-local-variable 'font-lock-defaults)
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182 (setq major-mode 'm4-mode
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183 mode-name "m4"
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184 font-lock-defaults '(m4-font-lock-keywords nil)
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185 )
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186 (set-syntax-table m4-mode-syntax-table)
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187 (run-hooks 'm4-mode-hook))
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188
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189 (provide 'm4-mode)
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190 ;;stuff to play with for debugging
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191 ;(char-to-string (char-syntax ?`))
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192
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193 ;;;how I generate the nasty looking regexps at the top
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194 ;;;(make-regexp '("builtin" "changecom" "changequote" "changeword" "debugfile"
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195 ;;; "debugmode" "decr" "define" "defn" "divert" "divnum" "dnl"
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196 ;;; "dumpdef" "errprint" "esyscmd" "eval" "file" "format" "gnu"
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197 ;;; "ifdef" "ifelse" "include" "incr" "index" "indir" "len" "line"
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198 ;;; "m4exit" "m4wrap" "maketemp" "patsubst" "popdef" "pushdef" "regexp"
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199 ;;; "shift" "sinclude" "substr" "syscmd" "sysval" "traceoff" "traceon"
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200 ;;; "translit" "undefine" "undivert" "unix"))
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201 ;;;(make-regexp '("m4_builtin" "m4_changecom" "m4_changequote" "m4_changeword"
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202 ;;; "m4_debugfile" "m4_debugmode" "m4_decr" "m4_define" "m4_defn"
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203 ;;; "m4_divert" "m4_divnum" "m4_dnl" "m4_dumpdef" "m4_errprint"
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204 ;;; "m4_esyscmd" "m4_eval" "m4_file" "m4_format" "m4_ifdef" "m4_ifelse"
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205 ;;; "m4_include" "m4_incr" "m4_index" "m4_indir" "m4_len" "m4_line"
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206 ;;; "m4_m4exit" "m4_m4wrap" "m4_maketemp" "m4_patsubst" "m4_popdef"
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207 ;;; "m4_pushdef" "m4_regexp" "m4_shift" "m4_sinclude" "m4_substr"
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208 ;;; "m4_syscmd" "m4_sysval" "m4_traceoff" "m4_traceon" "m4_translit"
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209 ;;; "m4_m4_undefine" "m4_undivert"))
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