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1 ;;; xrdb-mode.el --- mode for editing X resource database files
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2
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3 ;; Author: 1994-1997 Barry A. Warsaw
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4 ;; Maintainer: tools-help@python.org
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5 ;; Created: May 1994
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26
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6 ;; Version: 1.21
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7 ;; Last Modified: 1997/02/24 03:34:56
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8 ;; Keywords: data languages
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9
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10 ;; Copyright (C) 1994 Barry A. Warsaw
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11
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12 ;; This file is not part of GNU Emacs.
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13
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14 ;; This program is free software; you can redistribute it and/or modify
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15 ;; it under the terms of the GNU General Public License as published by
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16 ;; the Free Software Foundation; either version 2 of the License, or
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17 ;; (at your option) any later version.
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18 ;;
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19 ;; This program is distributed in the hope that it will be useful,
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20 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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21 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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22 ;; GNU General Public License for more details.
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23 ;;
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24 ;; You should have received a copy of the GNU General Public License
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25 ;; along with this program; if not, write to the Free Software
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26 ;; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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27
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28 ;;; Commentary:
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29 ;;
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30 ;; In 1994 I wrote:
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31 ;;
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32 ;; "I used to be like you. I used to hack on X resource database files
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33 ;; all the time, and when I did, I found this mode to be fairly
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34 ;; useful. It's by no means perfect. At one time I had a collection
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35 ;; of hacks that did some nice indentation of resource lines, but
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36 ;; they were not organized in any way. This mode was my attempt to
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37 ;; congeal this mess into a proper major mode. I release it now, not
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38 ;; because it will change your life, but because I don't plan to do
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39 ;; anything more with it.
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40 ;;
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41 ;; I have since been enlightened and no longer have to cavort with
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42 ;; mere mortal X hackers anymore. I like my brain cells, so now I
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43 ;; use NEXTSTEP where all is glory. Or would you say I traded one
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44 ;; vice for another? Hmm... Anyway, if you are still down in the
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45 ;; trenches and would like to inherit this file, let me know. I
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46 ;; don't intend to do any work on it any more... unless I lose my
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47 ;; place in paradise. I promise to be good, Steve. :-) :-)"
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48 ;;
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49 ;; I have fallen from grace and have been kicked out of paradise. So
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50 ;; has Steve Jobs apparently :-)
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51 ;;
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52 ;; To use, put the following in your .emacs:
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53 ;;
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54 ;; (autoload 'xrdb-mode "xrdb-mode" "Mode for editing X resource files" t)
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55 ;;
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56 ;; You may also want something like:
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57 ;;
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58 ;; (setq auto-mode-alist
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59 ;; (append '(("\\.Xdefaults$" . xrdb-mode)
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60 ;; ("\\.Xenvironment$" . xrdb-mode)
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61 ;; ("\\.Xresources$" . xrdb-mode)
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62 ;; )
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63 ;; auto-mode-alist))
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64
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65
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66 ;; Code:
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67
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68
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69 ;; These variables are available for your customization
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70 (defvar xrdb-mode-hook nil
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71 "*Hook to be run when `xrdb-mode' is entered.")
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72
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73 (defvar xrdb-subdivide-by 'paragraph
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74 "*Extent of alignment calculations.
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75 Can be one of `buffer', `paragraph', `page', or `line'. Do a
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76 \\[describe-function] xrdb-indent-buffer RET for more information.")
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77
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78
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79
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80 ;; no need to customize anything below this line
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81 (defconst xrdb-comment-re "^[ \t]*[!]"
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82 "Character which starts a comment.")
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83 (defconst xrdb-separator-char ?:
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84 "Character which separates resource specs from values.")
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85
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86
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87 ;; utilities
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88 (defsubst xrdb-point (position)
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89 ;; Returns the value of point at certain commonly referenced POSITIONs.
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90 ;; POSITION can be one of the following symbols:
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91 ;;
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92 ;; bol -- beginning of line
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93 ;; eol -- end of line
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94 ;; bod -- beginning of defun
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95 ;; boi -- back to indentation
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96 ;; ionl -- indentation of next line
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97 ;; iopl -- indentation of previous line
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98 ;; bonl -- beginning of next line
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99 ;; bopl -- beginning of previous line
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100 ;; bop -- beginning of paragraph
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101 ;; eop -- end of paragraph
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102 ;; bopg -- beginning of page
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103 ;; eopg -- end of page
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104 ;;
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105 ;; This function does not modify point or mark.
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106 (let ((here (point)))
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107 (cond
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108 ((eq position 'bol) (beginning-of-line))
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109 ((eq position 'eol) (end-of-line))
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110 ((eq position 'boi) (back-to-indentation))
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111 ((eq position 'bonl) (forward-line 1))
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112 ((eq position 'bopl) (forward-line -1))
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113 ((eq position 'bop) (forward-paragraph -1))
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114 ((eq position 'eop) (forward-paragraph 1))
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115 ((eq position 'bopg) (forward-page -1))
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116 ((eq position 'eopg) (forward-page 1))
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117 (t
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118 (error "unknown buffer position requested: %s" position)))
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119 (prog1
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120 (point)
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121 (goto-char here))
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122 ))
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123
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124 (defsubst xrdb-skip-to-separator ()
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125 ;; skip forward from the beginning of the line to the separator
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126 ;; character as given by xrdb-separator-char. Returns t if the
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127 ;; char was found, otherwise, nil.
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128 (beginning-of-line)
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129 (skip-chars-forward
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130 (concat "^" (char-to-string xrdb-separator-char))
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131 (xrdb-point 'eol))
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132 (= (following-char) xrdb-separator-char))
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133
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134
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135
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136 ;; commands
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137 (defun xrdb-electric-separator (arg)
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138 "Insert the separator character.
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139 Re-align the line unless an argument is given."
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140 (interactive "P")
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141 ;; first insert the character
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142 (self-insert-command (prefix-numeric-value arg))
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143 ;; only do electric behavior if arg is not given
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144 (if (not arg)
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145 (xrdb-align-to (xrdb-point 'bol)
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146 (xrdb-point 'bonl)
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147 (save-excursion
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148 (beginning-of-line)
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149 (forward-comment (- (point-max)))
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150 (beginning-of-line)
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151 (xrdb-skip-to-separator)
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152 (current-column)))))
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153
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154 (defun xrdb-align-to (start end goalcolumn)
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155 (interactive "r\nnAlign to column: ")
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156 (save-excursion
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157 (save-restriction
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158 (narrow-to-region start end)
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159 (beginning-of-buffer)
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160 (while (< (point) (point-max))
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161 (if (and (not (looking-at xrdb-comment-re))
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162 (xrdb-skip-to-separator)
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163 goalcolumn)
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164 (indent-code-rigidly (xrdb-point 'bol)
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165 (xrdb-point 'bonl)
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166 (- goalcolumn (current-column))))
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167 (forward-line 1)))))
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168
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169 (defun xrdb-indent-line (arg)
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170 "Re-align current line."
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171 (interactive "P")
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172 ;; narrow to the region specified by xrdb-subdivide-by
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173 (save-excursion
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174 (save-restriction
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175 (widen)
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176 (cond
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177 ((eq xrdb-subdivide-by 'buffer))
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178 ((eq xrdb-subdivide-by 'page)
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179 (narrow-to-page))
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180 ((eq xrdb-subdivide-by 'paragraph)
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181 (narrow-to-region (xrdb-point 'bop) (xrdb-point 'eop)))
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182 (t
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183 (narrow-to-region (xrdb-point 'bopl) (xrdb-point 'bonl))
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184 ))
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185 ;; indent line
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186 (xrdb-align-to (xrdb-point 'bol) (xrdb-point 'bonl)
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187 (xrdb-region-goal-column))
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188 )))
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189
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190 (defun xrdb-indent-region (start end)
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191 "Re-align region."
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192 (interactive "r")
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193 ;; narrow to region
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194 (save-excursion
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195 (save-restriction
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196 (narrow-to-region start end)
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197 (xrdb-align-to (point-min) (point-max) (xrdb-region-goal-column))
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198 )))
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199
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200 (defun xrdb-indent-page ()
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201 "Re-align the current page."
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202 (interactive)
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203 (save-excursion
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204 (save-restriction
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205 (narrow-to-page)
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206 (xrdb-align-to (point-min) (point-max) (xrdb-region-goal-column))
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207 )))
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208
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209 (defun xrdb-indent-paragraph ()
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210 "Re-align the current paragraph."
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211 (interactive)
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212 (save-excursion
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213 (save-restriction
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214 (narrow-to-region (xrdb-point 'bop) (xrdb-point 'eop))
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215 (xrdb-align-to (point-min) (point-max) (xrdb-region-goal-column))
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216 )))
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217
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218 (defun xrdb-indent-buffer (arg)
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219 "Re-align the entire buffer.
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220 Alignment calculations are controlled by the variable
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221 `xrdb-subdivide-by', which can take the values `buffer', `paragraph',
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222 `page', or `line', with the following meanings:
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223
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224 buffer - all non-comment lines are aligned with the longest line in
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225 the buffer. Since every line must be scanned, this will
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226 take the longest to perform.
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227
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228 paragraph - alignment of lines spanning paragraphs. A paragraph is
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229 defined as all contiguous lines between blank or comment
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230 lines.
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231
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232 page - alignment of lines spanning pages (i.e. separated by
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233 page-delimiter, usually ^L).
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234
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235 none - alignment of lines based on the previous line.
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236
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237 With optional \\[universal-argument], queries for alignment subdivision."
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238 (interactive "P")
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239 (let ((align-by (if (not arg)
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240 xrdb-subdivide-by
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241 (completing-read
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242 "Align by: "
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243 '(("buffer" . buffer)
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244 ("paragraph" . paragraph)
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245 ("page" . page)
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246 ("line" . line))
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247 nil t (format "%s" xrdb-subdivide-by)))))
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248 (message "Aligning by %s..." align-by)
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249 (save-excursion
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250 (save-restriction
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251 (widen)
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252 (cond
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253 ;; by buffer
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254 ((eq align-by 'buffer)
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255 (xrdb-align-to (point-min) (point-max) (xrdb-region-goal-column)))
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256 ;; by paragraph
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257 ((eq align-by 'paragraph)
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258 (beginning-of-buffer)
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259 (while (< (point) (point-max))
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260 (narrow-to-region (point) (xrdb-point 'eop))
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261 (xrdb-align-to (point-min) (point-max) (xrdb-region-goal-column))
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262 (beginning-of-buffer)
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263 (widen)
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264 (forward-paragraph 1)
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265 ))
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266 ;; by page
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267 ((eq align-by 'page)
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268 (beginning-of-buffer)
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269 (while (< (point) (point-max))
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270 (narrow-to-region (point) (xrdb-point 'eopg))
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271 (xrdb-align-to (point-min) (point-max) (xrdb-region-goal-column))
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272 (beginning-of-buffer)
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273 (widen)
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274 (forward-page 1)
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275 ))
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276 ;; by line
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277 (t
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278 (beginning-of-buffer)
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279 (let ((prev-goalcol 0))
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280 (while (< (point) (point-max))
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281 ;; skip comments and blank lines
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282 (if (not (looking-at paragraph-start))
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283 (progn
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284 (xrdb-align-to (xrdb-point 'bol) (xrdb-point 'bonl)
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285 prev-goalcol)
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286 (xrdb-skip-to-separator)
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287 (setq prev-goalcol (- (point) (xrdb-point 'boi)))
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288 ))
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289 (forward-line 1))))
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290 )))
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291 (message "Aligning by %s... done." align-by)
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292 ))
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293
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294
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295 ;; major-mode stuff
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296 (defvar xrdb-mode-abbrev-table nil
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297 "Abbrev table used in `xrdb-mode' buffers.")
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298 (define-abbrev-table 'xrdb-mode-abbrev-table ())
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299
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300
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301 (defvar xrdb-mode-syntax-table nil
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302 "Syntax table used in `xrdb-mode' buffers.")
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303 (if xrdb-mode-syntax-table
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304 ()
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305 (setq xrdb-mode-syntax-table (make-syntax-table))
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306 (modify-syntax-entry ?! "<" xrdb-mode-syntax-table)
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307 (modify-syntax-entry ?\n ">" xrdb-mode-syntax-table))
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308
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309
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310 (defvar xrdb-mode-map ()
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311 "Keymap used in `xrdb-mode' buffers.")
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312 (if xrdb-mode-map
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313 ()
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314 (setq xrdb-mode-map (make-sparse-keymap))
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315 (let ((ekey (char-to-string xrdb-separator-char)))
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316 ;; make the separator key electric
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317 (define-key xrdb-mode-map ekey 'xrdb-electric-separator)
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318 (define-key xrdb-mode-map "\t" 'xrdb-indent-line)
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319 (define-key xrdb-mode-map "\C-c\C-a" 'xrdb-indent-paragraph)
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320 (define-key xrdb-mode-map "\C-c\C-b" 'xrdb-submit-bug-report)
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321 (define-key xrdb-mode-map "\C-c\C-p" 'xrdb-indent-page)
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322 (define-key xrdb-mode-map "\C-c\C-r" 'xrdb-indent-region)
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323 (define-key xrdb-mode-map "\C-c\C-u" 'xrdb-indent-buffer)
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324 (define-key xrdb-mode-map "\C-c>" 'xrdb-align-to)
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325 ))
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326
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327 (defun xrdb-mode ()
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328 "Major mode for editing xrdb config files"
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329 (interactive)
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330 (kill-all-local-variables)
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331 (set-syntax-table xrdb-mode-syntax-table)
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332 (setq major-mode 'xrdb-mode
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333 mode-name "xrdb"
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334 local-abbrev-table xrdb-mode-abbrev-table)
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335 (use-local-map xrdb-mode-map)
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336 ;; local variables
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337 (make-local-variable 'parse-sexp-ignore-comments)
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338 (make-local-variable 'comment-start)
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339 (make-local-variable 'comment-end)
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340 (make-local-variable 'paragraph-start)
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341 (make-local-variable 'paragraph-separate)
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342 (make-local-variable 'paragraph-ignore-fill-prefix)
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343 ;; now set their values
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344 (setq parse-sexp-ignore-comments t
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345 comment-start "! "
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346 comment-end "")
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347 (setq indent-region-function 'xrdb-indent-region
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348 paragraph-ignore-fill-prefix t
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349 paragraph-start (concat "^[ \t]*$\\|^[ \t]*[!]\\|" page-delimiter)
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350 paragraph-separate paragraph-start)
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351 (run-hooks 'xrdb-mode-hook))
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352
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353
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354
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355 ;; faces and font-locking
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356 (defvar xrdb-option-name-face 'xrdb-option-name-face
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357 "Face for option name on a line in an X resource db file")
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358 (defvar xrdb-option-value-face 'xrdb-option-value-face
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359 "Face for option value on a line in an X resource db file")
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360
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361 (make-face 'xrdb-option-name-face)
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362 (make-face 'xrdb-option-value-face)
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26
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363
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364 (defun xrdb-font-lock-mode-hook ()
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365 (or (face-differs-from-default-p 'xrdb-option-name-face)
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366 (copy-face 'font-lock-keyword-face 'xrdb-option-name-face))
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367 (or (face-differs-from-default-p 'xrdb-option-value-face)
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368 (copy-face 'font-lock-string-face 'xrdb-option-value-face))
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369 (remove-hook 'font-lock-mode-hook 'xrdb-font-lock-mode-hook))
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370 (add-hook 'font-lock-mode-hook 'xrdb-font-lock-mode-hook)
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24
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371
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372 (defvar xrdb-font-lock-keywords
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373 (list '("^[ \t]*\\([^\n:]*:\\)[ \t]*\\(.*\\)$"
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374 (1 xrdb-option-name-face)
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375 (2 xrdb-option-value-face)))
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26
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376 "Additional expressions to highlight in X resource db mode.")
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377 (put 'xrdb-mode 'font-lock-defaults '(xrdb-font-lock-keywords))
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24
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378
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379
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380
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381 ;; commands
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382 (defun xrdb-region-goal-column ()
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383 ;; Returns the goal column of the current region. Assumes the
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384 ;; buffer has been narrowed to the region to scan.
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385 (save-excursion
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386 (beginning-of-buffer)
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387 (let ((goalcol -1)
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388 linecol)
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389 (while (< (point) (point-max))
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390 ;; skip any comments
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391 (if (and (not (looking-at xrdb-comment-re))
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392 (xrdb-skip-to-separator)
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393 (< goalcol (setq linecol (current-column)))
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394 )
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395 (setq goalcol linecol))
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396 (forward-line 1))
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397 (if (< goalcol 0)
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398 nil
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399 goalcol))))
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400
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401
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402
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403 ;; submitting bug reports
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404
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26
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405 (defconst xrdb-version "1.21"
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24
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406 "xrdb-mode version number.")
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407
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408 (defconst xrdb-mode-help-address "tools-help@python.org"
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409 "Address for xrdb-mode bug reports.")
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410
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411 (eval-when-compile
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412 (require 'reporter))
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413
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414 (defun xrdb-submit-bug-report ()
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415 "Submit via mail a bug report on xrdb-mode."
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416 (interactive)
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417 ;; load in reporter
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418 (let ((reporter-prompt-for-summary-p t)
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419 (varlist '(xrdb-subdivide-by
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420 xrdb-mode-hook
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421 )))
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422 (and (if (y-or-n-p "Do you want to submit a report on xrdb-mode? ")
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423 t
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424 (message "")
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425 nil)
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426 (require 'reporter)
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427 (reporter-submit-bug-report
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428 xrdb-mode-help-address "xrdb-mode" varlist nil nil "Dear Barry,")
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429 )))
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430
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431
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432 (provide 'xrdb-mode)
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433 ;; xrdb-mode.el ends here
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