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1 ;;; sysdep.el --- consolidate Emacs-version dependencies in one file.
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2
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3 ;; Copyright (C) 1995 Ben Wing.
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4
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5 ;; Author: Ben Wing <wing@666.com>
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6 ;; Keywords: lisp, tools
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7 ;; Version: 0.001
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8
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9 ;; The purpose of this file is to eliminate the cruftiness that
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10 ;; would otherwise be required of packages that want to run on multiple
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11 ;; versions of Emacs. The idea is that we make it look like we're running
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12 ;; the latest version of XEmacs (currently 19.12) by emulating all the
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13 ;; missing functions.
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14
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15 ;; #### This file does not currently do any advising but should.
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16 ;; Unfortunately, advice.el is a hugely big package. Is any such
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17 ;; thing as `advice-lite' possible?
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18
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19 ;; #### - This package is great, but its role needs to be thought out a bit
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20 ;; more. Sysdep will not permit programs written for the old XEmacs API to
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21 ;; run on new versions of XEmacs. Sysdep is a backward-compatibility
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22 ;; package for the latest and greatest XEmacs API. It permits programmers
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23 ;; to use the latest XEmacs functionality and still have their programs run
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24 ;; on older versions of XEmacs...perhaps even on FSF Emacs. It should NEVER
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25 ;; ever need to be loaded in the newest XEmacs. It doesn't even make sense
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26 ;; to put it in the lisp/utils part of the XEmacs distribution because it's
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27 ;; real purpose is to be distributed with packages like w3 which take
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28 ;; advantage of the latest and greatest features of XEmacs but still need to
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29 ;; be run on older versions. --Stig
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30
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31 ;; Any packages that wish to use this file should load it using
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32 ;; `load-library'. It will not load itself if a version of sysdep.el
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33 ;; that is at least as recent has already been loaded, but will
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34 ;; load over an older version of sysdep.el. It will attempt to
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35 ;; not redefine functions that have already been custom-redefined,
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36 ;; but will redefine a function if the supplied definition came from
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37 ;; an older version of sysdep.el.
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38
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39 ;; Packages such as w3 that wish to include this file with the package
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40 ;; should rename it to something unique, such as `w3-sysdep.el', and
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41 ;; load it with `load-library'. That will ensure that no conflicts
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42 ;; arise if more than one package in the load path provides a version
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43 ;; of sysdep.el. If multiple packages load sysdep.el, the most recent
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44 ;; version will end up loaded; as long as I'm careful not to
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45 ;; introduce bugs in previously working definitions, this should work
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46 ;; fine.
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47
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48 ;; You may well discover deficiencies in this file as you use it.
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49 ;; The preferable way of dealing with this is to send me a patch
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50 ;; to sysdep.el; that way, the collective body of knowledge gets
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51 ;; increased.
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52
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53 ;; DO NOT load this file with `require'.
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54 ;; DO NOT put a `provide' statement in this file.
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55
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56 ;; IMPORTANT: leave the version string in the format X.XXX (e.g. 1.001)
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57 ;; so that string comparisons to other versions work properly.
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58
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59 (defconst sysdep-potential-version "0.002")
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60
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61 (if (and (boundp 'sysdep-version)
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62 (not (string-lessp sysdep-version sysdep-potential-version)))
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63 ;; if a more recent version of sysdep was already loaded,
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64 ;; or if the same package is loaded again, don't load.
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65 nil
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66
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67 (defconst sysdep-version sysdep-potential-version)
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68
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69 ;; this macro means: define the function, but only if either it
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70 ;; wasn't bound before, or the supplied binding comes from an older
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71 ;; version of sysdep.el. That way, user-supplied bindings don't
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72 ;; get overridden.
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73
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74 ;; note: sysdep-defalias is often more useful than this function,
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75 ;; esp. since you can do load-time conditionalizing and can
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76 ;; optionally leave the function undefined. (e.g. frame functions
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77 ;; in v18.)
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78
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79 (defmacro sysdep-defun (function &rest everything-else)
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80 (` (cond ((or (not (fboundp (quote (, function))))
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81 (get (quote (, function)) 'sysdep-defined-this))
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82 (put (quote (, function)) 'sysdep-defined-this t)
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83 (defun (, function) (,@ everything-else))))))
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84
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85 (defmacro sysdep-defvar (function &rest everything-else)
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86 (` (cond ((or (not (boundp (quote (, function))))
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87 (get (quote (, function)) 'sysdep-defined-this))
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88 (put (quote (, function)) 'sysdep-defined-this t)
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89 (defvar (, function) (,@ everything-else))))))
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90
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91 (defmacro sysdep-defconst (function &rest everything-else)
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92 (` (cond ((or (not (boundp (quote (, function))))
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93 (get (quote (, function)) 'sysdep-defined-this))
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94 (put (quote (, function)) 'sysdep-defined-this t)
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95 (defconst (, function) (,@ everything-else))))))
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96
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97 ;; similar for fset and defalias. No need to quote as the argument
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98 ;; is already quoted.
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99
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100 (defmacro sysdep-fset (function def)
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101 (` (cond ((and (or (not (fboundp (, function)))
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102 (get (, function) 'sysdep-defined-this))
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103 (, def))
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104 (put (, function) 'sysdep-defined-this t)
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105 (fset (, function) (, def))))))
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106
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107 (defmacro sysdep-defalias (function def)
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108 (` (cond ((and (or (not (fboundp (, function)))
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109 (get (, function) 'sysdep-defined-this))
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110 (, def)
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111 (or (listp (, def))
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112 (and (symbolp (, def))
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113 (fboundp (, def)))))
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114 (put (, function) 'sysdep-defined-this t)
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115 (defalias (, function) (, def))))))
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116
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117 ;; bootstrapping: defalias and define-function don't exist
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118 ;; in older versions of lemacs
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119
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120 (sysdep-fset 'defalias 'fset)
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121 (sysdep-defalias 'define-function 'defalias)
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122
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123 ;; useful ways of determining what version is running
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124 ;; emacs-major-version and emacs-minor-version are
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125 ;; already defined in recent versions of FSF Emacs and XEmacs
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126
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127 (sysdep-defconst emacs-major-version
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128 ;; will string-match ever fail? If so, assume 19.0.
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129 ;; (should we assume 18.something?)
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130 (if (string-match "^[0-9]+" emacs-version)
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131 (string-to-int
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132 (substring emacs-version
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133 (match-beginning 0) (match-end 0)))
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134 19))
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135
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136 (sysdep-defconst emacs-minor-version
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137 (if (string-match "^[0-9]+\\.\\([0-9]+\\)" emacs-version)
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138 (string-to-int
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139 (substring emacs-version
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140 (match-beginning 1) (match-end 1)))
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141 0))
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142
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143 (sysdep-defconst sysdep-running-xemacs
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144 (or (string-match "Lucid" emacs-version)
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145 (string-match "XEmacs" emacs-version)))
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146
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147 (sysdep-defconst window-system nil)
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148 (sysdep-defconst window-system-version 0)
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149
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150 (sysdep-defvar list-buffers-directory nil)
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151 (sysdep-defvar x-library-search-path '("/usr/X11R6/lib/X11/"
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152 "/usr/X11R5/lib/X11/"
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153 "/usr/lib/X11R6/X11/"
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154 "/usr/lib/X11R5/X11/"
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155 "/usr/local/X11R6/lib/X11/"
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156 "/usr/local/X11R5/lib/X11/"
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157 "/usr/local/lib/X11R6/X11/"
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158 "/usr/local/lib/X11R5/X11/"
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159 "/usr/X11/lib/X11/"
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160 "/usr/lib/X11/"
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161 "/usr/local/lib/X11/"
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162 "/usr/X386/lib/X11/"
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163 "/usr/x386/lib/X11/"
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164 "/usr/XFree86/lib/X11/"
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165 "/usr/unsupported/lib/X11/"
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166 "/usr/athena/lib/X11/"
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167 "/usr/local/x11r5/lib/X11/"
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168 "/usr/lpp/Xamples/lib/X11/"
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169 "/usr/openwin/lib/X11/"
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170 "/usr/openwin/share/lib/X11/")
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171 "Search path used for X11 libraries.")
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172
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173 ;; frame-related stuff.
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174
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175 (sysdep-defalias 'buffer-dedicated-frame 'buffer-dedicated-screen)
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176 (sysdep-defalias 'deiconify-frame
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177 (cond ((fboundp 'deiconify-screen) 'deiconify-screen)
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178 ;; make-frame-visible will be defined as necessary
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179 (t 'make-frame-visible)))
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180 (sysdep-defalias 'delete-frame 'delete-screen)
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181 (sysdep-defalias 'event-frame 'event-screen)
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182 (sysdep-defalias 'event-glyph-extent 'event-glyph)
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183 (sysdep-defalias 'find-file-other-frame 'find-file-other-screen)
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184 (sysdep-defalias 'find-file-read-only-other-frame
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185 'find-file-read-only-other-screen)
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186 (sysdep-defalias 'frame-height 'screen-height)
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187 (sysdep-defalias 'frame-iconified-p 'screen-iconified-p)
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188 (sysdep-defalias 'frame-left-margin-width 'screen-left-margin-width)
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189 (sysdep-defalias 'frame-list 'screen-list)
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190 (sysdep-defalias 'frame-live-p
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191 (cond ((fboundp 'screen-live-p) 'screen-live-p)
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192 ((fboundp 'live-screen-p) 'live-screen-p)
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193 ;; #### not sure if this is correct (this is for Epoch)
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194 ;; but gnuserv.el uses it this way
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195 ((fboundp 'screenp) 'screenp)))
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196 (sysdep-defalias 'frame-name 'screen-name)
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197 (sysdep-defalias 'frame-parameters 'screen-parameters)
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198 (sysdep-defalias 'frame-pixel-height 'screen-pixel-height)
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199 (sysdep-defalias 'frame-pixel-width 'screen-pixel-width)
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200 (sysdep-defalias 'frame-right-margin-width 'screen-right-margin-width)
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201 (sysdep-defalias 'frame-root-window 'screen-root-window)
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202 (sysdep-defalias 'frame-selected-window 'screen-selected-window)
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203 (sysdep-defalias 'frame-totally-visible-p 'screen-totally-visible-p)
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204 (sysdep-defalias 'frame-visible-p 'screen-visible-p)
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205 (sysdep-defalias 'frame-width 'screen-width)
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206 (sysdep-defalias 'framep 'screenp)
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207 (sysdep-defalias 'get-frame-for-buffer 'get-screen-for-buffer)
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208 (sysdep-defalias 'get-frame-for-buffer-noselect 'get-screen-for-buffer-noselect)
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209 (sysdep-defalias 'get-other-frame 'get-other-screen)
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210 (sysdep-defalias 'iconify-frame 'iconify-screen)
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211 (sysdep-defalias 'lower-frame 'lower-screen)
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212 (sysdep-defalias 'mail-other-frame 'mail-other-screen)
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213
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214 (sysdep-defalias 'make-frame
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215 (cond ((fboundp 'make-screen)
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216 (function (lambda (&optional parameters device)
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217 (make-screen parameters))))
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218 ((fboundp 'x-create-screen)
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219 (function (lambda (&optional parameters device)
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220 (x-create-screen parameters))))))
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221
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222 (sysdep-defalias 'make-frame-invisible 'make-screen-invisible)
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223 (sysdep-defalias 'make-frame-visible
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224 (cond ((fboundp 'make-screen-visible) 'make-screen-visible)
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225 ((fboundp 'mapraised-screen) 'mapraised-screen)
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226 ((fboundp 'x-remap-window)
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227 (lambda (&optional x)
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228 (x-remap-window)
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229 (accept-process-output)))))
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230 (sysdep-defalias 'modify-frame-parameters 'modify-screen-parameters)
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231 (sysdep-defalias 'new-frame 'new-screen)
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232 (sysdep-defalias 'next-frame 'next-screen)
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233 (sysdep-defalias 'next-multiframe-window 'next-multiscreen-window)
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234 (sysdep-defalias 'other-frame 'other-screen)
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235 (sysdep-defalias 'previous-frame 'previous-screen)
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236 (sysdep-defalias 'previous-multiframe-window 'previous-multiscreen-window)
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237 (sysdep-defalias 'raise-frame
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238 (cond ((fboundp 'raise-screen) 'raise-screen)
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239 ((fboundp 'mapraise-screen) 'mapraise-screen)))
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240 (sysdep-defalias 'redraw-frame 'redraw-screen)
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241 (sysdep-defalias 'select-frame 'select-screen)
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242 (sysdep-defalias 'selected-frame 'selected-screen)
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243 (sysdep-defalias 'set-buffer-dedicated-frame 'set-buffer-dedicated-screen)
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244 (sysdep-defalias 'set-frame-height 'set-screen-height)
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245 (sysdep-defalias 'set-frame-left-margin-width 'set-screen-left-margin-width)
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246 (sysdep-defalias 'set-frame-position 'set-screen-position)
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247 (sysdep-defalias 'set-frame-right-margin-width 'set-screen-right-margin-width)
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248 (sysdep-defalias 'set-frame-size 'set-screen-size)
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249 (sysdep-defalias 'set-frame-width 'set-screen-width)
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250 (sysdep-defalias 'show-temp-buffer-in-current-frame 'show-temp-buffer-in-current-screen)
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251 (sysdep-defalias 'switch-to-buffer-other-frame 'switch-to-buffer-other-screen)
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252 (sysdep-defalias 'visible-frame-list 'visible-screen-list)
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253 (sysdep-defalias 'window-frame 'window-screen)
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254 (sysdep-defalias 'x-create-frame 'x-create-screen)
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255 (sysdep-defalias 'x-set-frame-icon-pixmap 'x-set-screen-icon-pixmap)
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256 (sysdep-defalias 'x-set-frame-pointer 'x-set-screen-pointer)
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257 (sysdep-defalias 'x-display-color-p 'x-color-display-p)
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258 (sysdep-defalias 'x-display-grayscale-p 'x-grayscale-display-p)
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259 (sysdep-defalias 'menu-event-p 'misc-user-event-p)
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260
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261 (sysdep-defun add-submenu (menu-path submenu &optional before)
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262 "Add a menu to the menubar or one of its submenus.
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263 If the named menu exists already, it is changed.
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264 MENU-PATH identifies the menu under which the new menu should be inserted.
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265 It is a list of strings; for example, (\"File\") names the top-level \"File\"
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266 menu. (\"File\" \"Foo\") names a hypothetical submenu of \"File\".
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267 If MENU-PATH is nil, then the menu will be added to the menubar itself.
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268 SUBMENU is the new menu to add.
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269 See the documentation of `current-menubar' for the syntax.
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270 BEFORE, if provided, is the name of a menu before which this menu should
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271 be added, if this menu is not on its parent already. If the menu is already
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272 present, it will not be moved."
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273 (add-menu menu-path (car submenu) (cdr submenu) before))
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274
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275 (sysdep-defun add-menu-button (menu-path menu-leaf &optional before)
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276 "Add a menu item to some menu, creating the menu first if necessary.
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277 If the named item exists already, it is changed.
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278 MENU-PATH identifies the menu under which the new menu item should be inserted.
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279 It is a list of strings; for example, (\"File\") names the top-level \"File\"
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280 menu. (\"File\" \"Foo\") names a hypothetical submenu of \"File\".
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281 MENU-LEAF is a menubar leaf node. See the documentation of `current-menubar'.
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282 BEFORE, if provided, is the name of a menu item before which this item should
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283 be added, if this item is not on the menu already. If the item is already
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284 present, it will not be moved."
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285 (add-menu-item menu-path (aref menu-leaf 0) (aref menu-leaf 1)
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286 (aref menu-leaf 2) before))
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287
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288 (sysdep-defun make-glyph (&optional spec-list)
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289 (if (and spec-list (cdr-safe (assq 'x spec-list)))
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290 (make-pixmap (cdr-safe (assq 'x spec-list)))))
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291
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292 (sysdep-defalias 'face-list 'list-faces)
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293
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294 (sysdep-defun set-face-property (face property value &optional locale
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295 tag-set how-to-add)
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296 "Change a property of FACE."
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297 (and (symbolp face)
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298 (put face property value)))
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299
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300 (sysdep-defun face-property (face property &optional locale tag-set exact-p)
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301 "Return FACE's value of the given PROPERTY."
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302 (and (symbolp face) (get face property)))
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303
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304 ;; Device functions
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305 ;; By wmperry@spry.com
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306 ;; This is a complete implementation of all the device-* functions found in
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307 ;; XEmacs 19.14. A 'device' for Emacs 19 is just a frame, from which we can
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308 ;; determine the connection to an X display, etc.
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309
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310 (sysdep-defalias 'selected-device 'ignore)
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311 (sysdep-defalias 'device-or-frame-p 'framep)
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312 (sysdep-defalias 'device-console 'ignore)
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313 (sysdep-defalias 'device-sound-enabled-p 'ignore)
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314 (sysdep-defalias 'device-live-p 'frame-live-p)
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315 (sysdep-defalias 'devicep 'framep)
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316 (sysdep-defalias 'frame-device 'identity)
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317 (sysdep-defalias 'redisplay-device 'redraw-frame)
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318 (sysdep-defalias 'redraw-device 'redraw-frame)
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319 (sysdep-defalias 'select-device 'select-frame)
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320 (sysdep-defalias 'set-device-class 'ignore)
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321
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322 (sysdep-defun make-device (type connection &optional props)
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323 "Create a new device of type TYPE, attached to connection CONNECTION.
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324
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325 The valid values for CONNECTION are device-specific; however,
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326 CONNECTION is generally a string. (Specifically, for X devices,
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327 CONNECTION should be a display specification such as \"foo:0\", and
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328 for TTY devices, CONNECTION should be the filename of a TTY device
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329 file, such as \"/dev/ttyp4\", or nil to refer to XEmacs' standard
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330 input/output.)
|
|
|
331
|
|
|
332 PROPS, if specified, should be a plist of properties controlling
|
|
|
333 device creation.
|
|
|
334
|
|
|
335 If CONNECTION specifies an already-existing device connection, that
|
|
|
336 device is simply returned; no new device is created, and PROPS
|
|
|
337 have no effect."
|
|
|
338 (cond
|
|
|
339 ((and (eq type 'x) connection)
|
|
|
340 (make-frame-on-display display props))
|
|
|
341 ((eq type 'x)
|
|
|
342 (make-frame props))
|
|
|
343 ((eq type 'tty)
|
|
|
344 nil)
|
|
|
345 (t
|
|
|
346 (error "Unsupported device-type: %s" type))))
|
|
|
347
|
|
|
348 (sysdep-defun make-frame-on-device (type connection &optional props)
|
|
|
349 "Create a frame of type TYPE on CONNECTION.
|
|
|
350 TYPE should be a symbol naming the device type, i.e. one of
|
|
|
351
|
|
|
352 x An X display. CONNECTION should be a standard display string
|
|
|
353 such as \"unix:0\", or nil for the display specified on the
|
|
|
354 command line or in the DISPLAY environment variable. Only if
|
|
|
355 support for X was compiled into XEmacs.
|
|
|
356 tty A standard TTY connection or terminal. CONNECTION should be
|
|
|
357 a TTY device name such as \"/dev/ttyp2\" (as determined by
|
|
|
358 the Unix command `tty') or nil for XEmacs' standard input
|
|
|
359 and output (usually the TTY in which XEmacs started). Only
|
|
|
360 if support for TTY's was compiled into XEmacs.
|
|
|
361 ns A connection to a machine running the NeXTstep windowing
|
|
|
362 system. Not currently implemented.
|
|
|
363 win32 A connection to a machine running Microsoft Windows NT or
|
|
|
364 Windows 95. Not currently implemented.
|
|
|
365 pc A direct-write MS-DOS frame. Not currently implemented.
|
|
|
366
|
|
|
367 PROPS should be an plist of properties, as in the call to `make-frame'.
|
|
|
368
|
|
|
369 If a connection to CONNECTION already exists, it is reused; otherwise,
|
|
|
370 a new connection is opened."
|
|
|
371 (make-device type connection props))
|
|
|
372
|
|
|
373 (sysdep-defun make-tty-device (&optional tty terminal-type)
|
|
|
374 "Create a new device on TTY.
|
|
|
375 TTY should be the name of a tty device file (e.g. \"/dev/ttyp3\" under
|
|
|
376 SunOS et al.), as returned by the `tty' command. A value of nil means
|
|
|
377 use the stdin and stdout as passed to XEmacs from the shell.
|
|
|
378 If TERMINAL-TYPE is non-nil, it should be a string specifying the
|
|
|
379 type of the terminal attached to the specified tty. If it is nil,
|
|
|
380 the terminal type will be inferred from the TERM environment variable."
|
|
|
381 (make-device 'tty tty (list 'terminal-type terminal-type)))
|
|
|
382
|
|
|
383 (sysdep-defun make-x-device (&optional display)
|
|
|
384 (make-device 'x display))
|
|
|
385
|
|
|
386 (sysdep-defun set-device-selected-frame (device frame)
|
|
|
387 "Set the selected frame of device object DEVICE to FRAME.
|
|
|
388 If DEVICE is nil, the selected device is used.
|
|
|
389 If DEVICE is the selected device, this makes FRAME the selected frame."
|
|
|
390 (select-frame frame))
|
|
|
391
|
|
|
392 (sysdep-defun set-device-baud-rate (device rate)
|
|
|
393 "Set the output baud rate of DEVICE to RATE.
|
|
|
394 On most systems, changing this value will affect the amount of padding
|
|
|
395 and other strategic decisions made during redisplay."
|
|
|
396 (setq baud-rate rate))
|
|
|
397
|
|
|
398 (sysdep-defun dfw-device (obj)
|
|
|
399 "Given a device, frame, or window, return the associated device.
|
|
|
400 Return nil otherwise."
|
|
|
401 (cond
|
|
|
402 ((windowp obj)
|
|
|
403 (window-frame obj))
|
|
|
404 ((framep obj)
|
|
|
405 obj)
|
|
|
406 (t
|
|
|
407 nil)))
|
|
|
408
|
|
|
409 (sysdep-defun event-device (event)
|
|
|
410 "Return the device that EVENT occurred on.
|
|
|
411 This will be nil for some types of events (e.g. keyboard and eval events)."
|
|
|
412 (dfw-device (posn-window (event-start event))))
|
|
|
413
|
|
|
414 (sysdep-defun find-device (connection &optional type)
|
|
|
415 "Look for an existing device attached to connection CONNECTION.
|
|
|
416 Return the device if found; otherwise, return nil.
|
|
|
417
|
|
|
418 If TYPE is specified, only return devices of that type; otherwise,
|
|
|
419 return devices of any type. (It is possible, although unlikely,
|
|
|
420 that two devices of different types could have the same connection
|
|
|
421 name; in such a case, the first device found is returned.)"
|
|
|
422 (let ((devices (device-list))
|
|
|
423 (retval nil))
|
|
|
424 (while (and devices (not nil))
|
|
|
425 (if (equal connection (device-connection (car devices)))
|
|
|
426 (setq retval (car devices)))
|
|
|
427 (setq devices (cdr devices)))
|
|
|
428 retval))
|
|
|
429
|
|
|
430 (sysdep-defalias 'get-device 'find-device)
|
|
|
431
|
|
|
432 (sysdep-defun device-baud-rate (&optional device)
|
|
|
433 "Return the output baud rate of DEVICE."
|
|
|
434 baud-rate)
|
|
|
435
|
|
|
436 (sysdep-defun device-on-window-system-p (&optional device)
|
|
|
437 "Return non-nil if DEVICE is on a window system.
|
|
|
438 This generally means that there is support for the mouse, the menubar,
|
|
|
439 the toolbar, glyphs, etc."
|
|
|
440 (and (cdr-safe (assq 'display (frame-parameters device))) t))
|
|
|
441
|
|
|
442 (sysdep-defun device-name (&optional device)
|
|
|
443 "Return the name of the specified device."
|
|
|
444 ;; doesn't handle the 19.29 multiple X display stuff yet
|
|
|
445 ;; doesn't handle NeXTStep either
|
|
|
446 (cond
|
|
|
447 ((null window-system) "stdio")
|
|
|
448 ((getenv "DISPLAY")
|
|
|
449 (let ((str (getenv "DISPLAY"))
|
|
|
450 (x (1- (length (getenv "DISPLAY"))))
|
|
|
451 (y 0))
|
|
|
452 (while (/= y x)
|
|
|
453 (if (or (= (aref str y) ?:)
|
|
|
454 (= (aref str y) ?.))
|
|
|
455 (aset str y ?-))
|
|
|
456 (setq y (1+ y)))
|
|
|
457 str))
|
|
|
458 (t "stdio")))
|
|
|
459
|
|
|
460
|
|
|
461 (sysdep-defun device-connection (&optional device)
|
|
|
462 "Return the connection of the specified device.
|
|
|
463 DEVICE defaults to the selected device if omitted"
|
|
|
464 (or (cdr-safe (assq 'display (frame-parameters device))) "stdio"))
|
|
|
465
|
|
|
466 (sysdep-defun device-frame-list (&optional device)
|
|
|
467 "Return a list of all frames on DEVICE.
|
|
|
468 If DEVICE is nil, the selected device will be used."
|
|
|
469 (let ((desired (device-connection device)))
|
|
|
470 (filtered-frame-list (function (lambda (x) (equal (device-connection x)
|
|
|
471 desired))))))
|
|
|
472 (sysdep-defun device-list ()
|
|
|
473 "Return a list of all devices"
|
|
|
474 (let ((seen nil)
|
|
|
475 (cur nil)
|
|
|
476 (conn nil)
|
|
|
477 (retval nil)
|
|
|
478 (not-heard (frame-list)))
|
|
|
479 (while not-heard
|
|
|
480 (setq cur (car not-heard)
|
|
|
481 conn (device-connection cur)
|
|
|
482 not-heard (cdr not-heard))
|
|
|
483 (if (member conn seen)
|
|
|
484 nil ; Already got it
|
|
|
485 (setq seen (cons conn seen) ; Whoo hoo, a new one!
|
|
|
486 retval (cons cur retval))))
|
|
|
487 retval))
|
|
|
488
|
|
|
489 (sysdep-defvar delete-device-hook nil
|
|
|
490 "Function or functions to call when a device is deleted.
|
|
|
491 One argument, the to-be-deleted device.")
|
|
|
492
|
|
|
493 (sysdep-defun delete-device (device &optional force)
|
|
|
494 "Delete DEVICE, permanently eliminating it from use.
|
|
|
495 Normally, you cannot delete the last non-minibuffer-only frame (you must
|
|
|
496 use `save-buffers-kill-emacs' or `kill-emacs'). However, if optional
|
|
|
497 second argument FORCE is non-nil, you can delete the last frame. (This
|
|
|
498 will automatically call `save-buffers-kill-emacs'.)"
|
|
|
499 (let ((frames (device-frame-list device)))
|
|
|
500 (run-hook-with-args 'delete-device-hook device)
|
|
|
501 (while frames
|
|
|
502 (delete-frame (car frames) force)
|
|
|
503 (setq frames (cdr frames)))))
|
|
|
504
|
|
|
505 (sysdep-defalias 'device-color-cells
|
|
|
506 (cond
|
|
|
507 ((null window-system) 'ignore)
|
|
|
508 ((fboundp 'display-color-cells) 'display-color-cells)
|
|
|
509 ((fboundp 'x-display-color-cells) 'x-display-color-cells)
|
|
|
510 ((fboundp 'ns-display-color-cells) 'ns-display-color-celles)
|
|
|
511 (t 'ignore)))
|
|
|
512
|
|
|
513 (sysdep-defun try-font-name (fontname &rest args)
|
|
|
514 (car-safe (x-list-fonts fontname)))
|
|
|
515
|
|
|
516 (sysdep-defalias 'device-pixel-width
|
|
|
517 (cond
|
|
|
518 ((and (eq window-system 'x) (fboundp 'x-display-pixel-width))
|
|
|
519 'x-display-pixel-width)
|
|
|
520 ((and (eq window-system 'ns) (fboundp 'ns-display-pixel-width))
|
|
|
521 'ns-display-pixel-width)
|
|
|
522 (t 'ignore)))
|
|
|
523
|
|
|
524 (sysdep-defalias 'device-pixel-height
|
|
|
525 (cond
|
|
|
526 ((and (eq window-system 'x) (fboundp 'x-display-pixel-height))
|
|
|
527 'x-display-pixel-height)
|
|
|
528 ((and (eq window-system 'ns) (fboundp 'ns-display-pixel-height))
|
|
|
529 'ns-display-pixel-height)
|
|
|
530 (t 'ignore)))
|
|
|
531
|
|
|
532 (sysdep-defalias 'device-mm-width
|
|
|
533 (cond
|
|
|
534 ((and (eq window-system 'x) (fboundp 'x-display-mm-width))
|
|
|
535 'x-display-mm-width)
|
|
|
536 ((and (eq window-system 'ns) (fboundp 'ns-display-mm-width))
|
|
|
537 'ns-display-mm-width)
|
|
|
538 (t 'ignore)))
|
|
|
539
|
|
|
540 (sysdep-defalias 'device-mm-height
|
|
|
541 (cond
|
|
|
542 ((and (eq window-system 'x) (fboundp 'x-display-mm-height))
|
|
|
543 'x-display-mm-height)
|
|
|
544 ((and (eq window-system 'ns) (fboundp 'ns-display-mm-height))
|
|
|
545 'ns-display-mm-height)
|
|
|
546 (t 'ignore)))
|
|
|
547
|
|
|
548 (sysdep-defalias 'device-bitplanes
|
|
|
549 (cond
|
|
|
550 ((and (eq window-system 'x) (fboundp 'x-display-planes))
|
|
|
551 'x-display-planes)
|
|
|
552 ((and (eq window-system 'ns) (fboundp 'ns-display-planes))
|
|
|
553 'ns-display-planes)
|
|
|
554 (t 'ignore)))
|
|
|
555
|
|
|
556 (sysdep-defalias 'device-class
|
|
|
557 (cond
|
|
|
558 ((and (eq window-system 'x) (fboundp 'x-display-visual-class))
|
|
|
559 (function
|
|
|
560 (lambda (&optional device)
|
|
|
561 (let ((val (symbol-name (x-display-visual-class device))))
|
|
|
562 (cond
|
|
|
563 ((string-match "color" val) 'color)
|
|
|
564 ((string-match "gray-scale" val) 'grayscale)
|
|
|
565 (t 'mono))))))
|
|
|
566 ((fboundp 'number-of-colors)
|
|
|
567 (function
|
|
|
568 (lambda (&optional device)
|
|
|
569 (if (= 2 (number-of-colors))
|
|
|
570 'mono
|
|
|
571 'color))))
|
|
|
572 ((and (eq window-system 'x) (fboundp 'x-color-p))
|
|
|
573 (function
|
|
|
574 (lambda (&optional device)
|
|
|
575 (if (x-color-p)
|
|
|
576 'color
|
|
|
577 'mono))))
|
|
|
578 ((and (eq window-system 'ns) (fboundp 'ns-display-visual-class))
|
|
|
579 (function
|
|
|
580 (lambda (&optional device)
|
|
|
581 (let ((val (symbol-name (ns-display-visual-class))))
|
|
|
582 (cond
|
|
|
583 ((string-match "color" val) 'color)
|
|
|
584 ((string-match "gray-scale" val) 'grayscale)
|
|
|
585 (t 'mono))))))
|
|
|
586 (t (function (lambda (&optional device) 'mono)))))
|
|
|
587
|
|
|
588 (sysdep-defun device-class-list ()
|
|
|
589 "Returns a list of valid device classes."
|
|
|
590 (list 'color 'grayscale 'mono))
|
|
|
591
|
|
|
592 (sysdep-defun valid-device-class-p (class)
|
|
|
593 "Given a CLASS, return t if it is valid.
|
|
|
594 Valid classes are 'color, 'grayscale, and 'mono."
|
|
|
595 (memq class (device-class-list)))
|
|
|
596
|
|
|
597 (sysdep-defun device-or-frame-type (device-or-frame)
|
|
|
598 "Return the type (e.g. `x' or `tty') of DEVICE-OR-FRAME.
|
|
|
599 DEVICE-OR-FRAME should be a device or a frame object. See `device-type'
|
|
|
600 for a description of the possible types."
|
|
|
601 (if (cdr-safe (assq 'display (frame-parameters device-or-frame)))
|
|
|
602 window-system
|
|
|
603 'tty))
|
|
|
604
|
|
|
605 (sysdep-defun device-type (&optional device)
|
|
|
606 "Return the type of the specified device (e.g. `x' or `tty').
|
|
|
607 Value is `tty' for a tty device (a character-only terminal),
|
|
|
608 `x' for a device which is a connection to an X server,
|
|
|
609 'ns' for a device which is a connection to a NeXTStep dps server,
|
|
|
610 'win32' for a Windows-NT window,
|
|
|
611 'pm' for an OS/2 Presentation Manager window,
|
|
|
612 'intuition' for an Amiga screen"
|
|
|
613 (device-or-frame-type device))
|
|
|
614
|
|
|
615 (sysdep-defun device-type-list ()
|
|
|
616 "Return a list of valid console types."
|
|
|
617 (if window-system
|
|
|
618 (list window-system 'tty)
|
|
|
619 (list 'tty)))
|
|
|
620
|
|
|
621 (sysdep-defun valid-device-type-p (type)
|
|
|
622 "Given a TYPE, return t if it is valid."
|
|
|
623 (memq type (device-type-list)))
|
|
|
624
|
|
|
625
|
|
|
626 ;; Extent stuff
|
|
|
627 (sysdep-fset 'delete-extent 'delete-overlay)
|
|
|
628 (sysdep-fset 'extent-end-position 'overlay-end)
|
|
|
629 (sysdep-fset 'extent-start-position 'overlay-start)
|
|
|
630 (sysdep-fset 'set-extent-endpoints 'move-overlay)
|
|
|
631
|
|
|
632 (sysdep-defun extent-property (extent property &optional default)
|
|
|
633 (or (overlay-get extent property) default))
|
|
|
634
|
|
|
635 (sysdep-defun extent-at (pos &optional object property before at-flag)
|
|
|
636 (let ((tmp (overlays-at (point)))
|
|
|
637 ovls)
|
|
|
638 (if property
|
|
|
639 (while tmp
|
|
|
640 (if (extent-property (car tmp) property)
|
|
|
641 (setq ovls (cons (car tmp) ovls)))
|
|
|
642 (setq tmp (cdr tmp)))
|
|
|
643 (setq ovls tmp
|
|
|
644 tmp nil))
|
|
|
645 (car-safe
|
|
|
646 (sort ovls
|
|
|
647 (function
|
|
|
648 (lambda (a b)
|
|
|
649 (< (- (extent-end-position a) (extent-start-position a))
|
|
|
650 (- (extent-end-position b) (extent-start-position b)))))))))
|
|
|
651
|
|
|
652
|
|
|
653 (sysdep-defun overlays-in (beg end)
|
|
|
654 "Return a list of the overlays that overlap the region BEG ... END.
|
|
|
655 Overlap means that at least one character is contained within the overlay
|
|
|
656 and also contained within the specified region.
|
|
|
657 Empty overlays are included in the result if they are located at BEG
|
|
|
658 or between BEG and END."
|
|
|
659 (let ((ovls (overlay-lists))
|
|
|
660 tmp retval)
|
|
|
661 (if (< end beg)
|
|
|
662 (setq tmp end
|
|
|
663 end beg
|
|
|
664 beg tmp))
|
|
|
665 (setq ovls (nconc (car ovls) (cdr ovls)))
|
|
|
666 (while ovls
|
|
|
667 (setq tmp (car ovls)
|
|
|
668 ovls (cdr ovls))
|
|
|
669 (if (or (and (<= (overlay-start tmp) end)
|
|
|
670 (>= (overlay-start tmp) beg))
|
|
|
671 (and (<= (overlay-end tmp) end)
|
|
|
672 (>= (overlay-end tmp) beg)))
|
|
|
673 (setq retval (cons tmp retval))))
|
|
|
674 retval))
|
|
|
675
|
|
|
676 (sysdep-defun map-extents (function &optional object from to
|
|
|
677 maparg flags property value)
|
|
|
678 (let ((tmp (overlays-in (or from (point-min))
|
|
|
679 (or to (point-max))))
|
|
|
680 ovls)
|
|
|
681 (if property
|
|
|
682 (while tmp
|
|
|
683 (if (extent-property (car tmp) property)
|
|
|
684 (setq ovls (cons (car tmp) ovls)))
|
|
|
685 (setq tmp (cdr tmp)))
|
|
|
686 (setq ovls tmp
|
|
|
687 tmp nil))
|
|
|
688 (catch 'done
|
|
|
689 (while ovls
|
|
|
690 (setq tmp (funcall function (car ovls) maparg)
|
|
|
691 ovls (cdr ovls))
|
|
|
692 (if tmp
|
|
|
693 (throw 'done tmp))))))
|
|
|
694
|
|
|
695 ;; misc
|
|
|
696 (sysdep-defun symbol-value-in-buffer (symbol buffer &optional unbound-value)
|
|
|
697 "Return the value of SYMBOL in BUFFER, or UNBOUND-VALUE if it is unbound."
|
|
|
698 (save-excursion
|
|
|
699 (set-buffer buffer)
|
|
|
700 (if (not (boundp symbol))
|
|
|
701 unbound-value
|
|
|
702 (symbol-value symbol))))
|
|
|
703
|
|
|
704 (sysdep-defun insert-file-contents-literally
|
|
|
705 (file &optional visit beg end replace)
|
|
|
706 "Like `insert-file-contents', q.v., but only reads in the file.
|
|
|
707 A buffer may be modified in several ways after reading into the buffer due
|
|
|
708 to advanced Emacs features, such as file-name-handlers, format decoding,
|
|
|
709 find-file-hooks, etc.
|
|
|
710 This function ensures that none of these modifications will take place."
|
|
|
711 (let ((file-name-handler-alist nil)
|
|
|
712 (find-file-hooks nil))
|
|
|
713 (insert-file-contents file visit beg end replace)))
|
|
|
714
|
|
|
715 (sysdep-defun alist-to-plist (alist)
|
|
|
716 "Convert association list ALIST into the equivalent property-list form.
|
|
|
717 The plist is returned. This converts from
|
|
|
718
|
|
|
719 \((a . 1) (b . 2) (c . 3))
|
|
|
720
|
|
|
721 into
|
|
|
722
|
|
|
723 \(a 1 b 2 c 3)
|
|
|
724
|
|
|
725 The original alist is not modified. See also `destructive-alist-to-plist'."
|
|
|
726 (let (plist)
|
|
|
727 (while alist
|
|
|
728 (let ((el (car alist)))
|
|
|
729 (setq plist (cons (cdr el) (cons (car el) plist))))
|
|
|
730 (setq alist (cdr alist)))
|
|
|
731 (nreverse plist)))
|
|
|
732
|
|
|
733 (sysdep-defun add-minor-mode (toggle name &optional keymap after toggle-fun)
|
|
|
734 "Add a minor mode to `minor-mode-alist' and `minor-mode-map-alist'.
|
|
|
735 TOGGLE is a symbol which is used as the variable which toggle the minor mode,
|
|
|
736 NAME is the name that should appear in the modeline (it should be a string
|
|
|
737 beginning with a space), KEYMAP is a keymap to make active when the minor
|
|
|
738 mode is active, and AFTER is the toggling symbol used for another minor
|
|
|
739 mode. If AFTER is non-nil, then it is used to position the new mode in the
|
|
|
740 minor-mode alists. TOGGLE-FUN specifies an interactive function that
|
|
|
741 is called to toggle the mode on and off; this affects what appens when
|
|
|
742 button2 is pressed on the mode, and when button3 is pressed somewhere
|
|
|
743 in the list of modes. If TOGGLE-FUN is nil and TOGGLE names an
|
|
|
744 interactive function, TOGGLE is used as the toggle function.
|
|
|
745
|
|
|
746 Example: (add-minor-mode 'view-minor-mode \" View\" view-mode-map)"
|
|
|
747 (if (not (assq toggle minor-mode-alist))
|
|
|
748 (setq minor-mode-alist (cons (list toggle name) minor-mode-alist)))
|
|
|
749 (if (and keymap (not (assq toggle minor-mode-map-alist)))
|
|
|
750 (setq minor-mode-map-alist (cons (cons toggle keymap)
|
|
|
751 minor-mode-map-alist))))
|
|
|
752
|
|
|
753 (sysdep-defvar x-font-regexp-foundry-and-family
|
|
|
754 (let ((- "[-?]")
|
|
|
755 (foundry "[^-]+")
|
|
|
756 (family "[^-]+")
|
|
|
757 )
|
|
|
758 (concat "\\`[-?*]" foundry - "\\(" family "\\)" -)))
|
|
|
759
|
|
|
760 (sysdep-defun match-string (num &optional string)
|
|
|
761 "Return string of text matched by last search.
|
|
|
762 NUM specifies which parenthesized expression in the last regexp.
|
|
|
763 Value is nil if NUMth pair didn't match, or there were less than NUM pairs.
|
|
|
764 Zero means the entire text matched by the whole regexp or whole string.
|
|
|
765 STRING should be given if the last search was by `string-match' on STRING."
|
|
|
766 (if (match-beginning num)
|
|
|
767 (if string
|
|
|
768 (substring string (match-beginning num) (match-end num))
|
|
|
769 (buffer-substring (match-beginning num) (match-end num)))))
|
|
|
770
|
|
|
771 (sysdep-defun add-hook (hook-var function &optional at-end)
|
|
|
772 "Add a function to a hook.
|
|
|
773 First argument HOOK-VAR (a symbol) is the name of a hook, second
|
|
|
774 argument FUNCTION is the function to add.
|
|
|
775 Third (optional) argument AT-END means to add the function at the end
|
|
|
776 of the hook list instead of the beginning. If the function is already
|
|
|
777 present, this has no effect.
|
|
|
778 Returns nil if FUNCTION was already present in HOOK-VAR, else new
|
|
|
779 value of HOOK-VAR."
|
|
|
780 (if (not (boundp hook-var)) (set hook-var nil))
|
|
|
781 (let ((old (symbol-value hook-var)))
|
|
|
782 (if (or (not (listp old)) (eq (car old) 'lambda))
|
|
|
783 (setq old (list old)))
|
|
|
784 (if (member function old)
|
|
|
785 nil
|
|
|
786 (set hook-var
|
|
|
787 (if at-end
|
|
|
788 (append old (list function)) ; don't nconc
|
|
|
789 (cons function old))))))
|
|
|
790
|
|
|
791 (sysdep-defalias 'valid-color-name-p
|
|
|
792 (cond
|
|
|
793 ((fboundp 'x-valid-color-name-p) ; XEmacs/Lucid
|
|
|
794 'x-valid-color-name-p)
|
|
|
795 ((and window-system
|
|
|
796 (fboundp 'color-defined-p)) ; NS/Emacs 19
|
|
|
797 'color-defined-p)
|
|
|
798 ((and window-system
|
|
|
799 (fboundp 'x-color-defined-p)) ; Emacs 19
|
|
|
800 'x-color-defined-p)
|
|
|
801 ((fboundp 'get-color) ; Epoch
|
|
|
802 (function (lambda (color)
|
|
|
803 (let ((x (get-color color)))
|
|
|
804 (if x
|
|
|
805 (setq x (progn
|
|
|
806 (free-color x)
|
|
|
807 t)))
|
|
|
808 x))))
|
|
|
809 (t 'identity))) ; All others
|
|
|
810
|
|
|
811 ;; Misc.
|
|
|
812 (sysdep-defun split-string (string pattern)
|
|
|
813 "Return a list of substrings of STRING which are separated by PATTERN."
|
|
|
814 (let (parts (start 0))
|
|
|
815 (while (string-match pattern string start)
|
|
|
816 (setq parts (cons (substring string start (match-beginning 0)) parts)
|
|
|
817 start (match-end 0)))
|
|
|
818 (nreverse (cons (substring string start) parts))
|
|
|
819 ))
|
|
|
820
|
|
|
821 (sysdep-defun member (elt list)
|
|
|
822 (while (and list (not (equal elt (car list))))
|
|
|
823 (setq list (cdr list)))
|
|
|
824 list)
|
|
|
825
|
|
|
826 (sysdep-defun rassoc (key list)
|
|
|
827 (let ((found nil))
|
|
|
828 (while (and list (not found))
|
|
|
829 (if (equal (cdr (car list)) key) (setq found (car list)))
|
|
|
830 (setq list (cdr list)))
|
|
|
831 found))
|
|
|
832
|
|
|
833 (sysdep-defun display-error (error-object stream)
|
|
|
834 "Display `error-object' on `stream' in a user-friendly way."
|
|
|
835 (funcall (or (let ((type (car-safe error-object)))
|
|
|
836 (catch 'error
|
|
|
837 (and (consp error-object)
|
|
|
838 (symbolp type)
|
|
|
839 ;;(stringp (get type 'error-message))
|
|
|
840 (consp (get type 'error-conditions))
|
|
|
841 (let ((tail (cdr error-object)))
|
|
|
842 (while (not (null tail))
|
|
|
843 (if (consp tail)
|
|
|
844 (setq tail (cdr tail))
|
|
|
845 (throw 'error nil)))
|
|
|
846 t)
|
|
|
847 ;; (check-type condition condition)
|
|
|
848 (get type 'error-conditions)
|
|
|
849 ;; Search class hierarchy
|
|
|
850 (let ((tail (get type 'error-conditions)))
|
|
|
851 (while (not (null tail))
|
|
|
852 (cond ((not (and (consp tail)
|
|
|
853 (symbolp (car tail))))
|
|
|
854 (throw 'error nil))
|
|
|
855 ((get (car tail) 'display-error)
|
|
|
856 (throw 'error (get (car tail)
|
|
|
857 'display-error)))
|
|
|
858 (t
|
|
|
859 (setq tail (cdr tail)))))
|
|
|
860 ;; Default method
|
|
|
861 (function
|
|
|
862 (lambda (error-object stream)
|
|
|
863 (let ((type (car error-object))
|
|
|
864 (tail (cdr error-object))
|
|
|
865 (first t))
|
|
|
866 (if (eq type 'error)
|
|
|
867 (progn (princ (car tail) stream)
|
|
|
868 (setq tail (cdr tail)))
|
|
|
869 (princ (or (get type 'error-message) type)
|
|
|
870 stream))
|
|
|
871 (while tail
|
|
|
872 (princ (if first ": " ", ") stream)
|
|
|
873 (prin1 (car tail) stream)
|
|
|
874 (setq tail (cdr tail)
|
|
|
875 first nil)))))))))
|
|
|
876 (function
|
|
|
877 (lambda (error-object stream)
|
|
|
878 (princ "Peculiar error " stream)
|
|
|
879 (prin1 error-object stream))))
|
|
|
880 error-object stream))
|
|
|
881
|
|
|
882 (sysdep-defun find-face (face)
|
|
|
883 (car-safe (memq face (face-list))))
|
|
|
884
|
|
|
885 ;; window functions
|
|
|
886
|
|
|
887 ;; not defined in v18
|
|
|
888 (sysdep-defun eval-buffer (bufname &optional printflag)
|
|
|
889 (save-excursion
|
|
|
890 (set-buffer bufname)
|
|
|
891 (eval-current-buffer)))
|
|
|
892
|
|
|
893 (sysdep-defun window-minibuffer-p (window)
|
|
|
894 "Returns non-nil if WINDOW is a minibuffer window."
|
|
|
895 (eq window (minibuffer-window)))
|
|
|
896
|
|
|
897 ;; not defined in v18
|
|
|
898 (sysdep-defun window-live-p (window)
|
|
|
899 "Returns t if OBJ is a window which is currently visible."
|
|
|
900 (and (windowp window)
|
|
|
901 (window-point window)))
|
|
|
902
|
|
|
903 ;; this parenthesis closes the if statement at the top of the file.
|
|
|
904
|
|
|
905 )
|
|
|
906
|
|
|
907 ;; DO NOT put a provide statement here. This file should never be
|
|
|
908 ;; loaded with `require'. Use `load-library' instead.
|
|
|
909
|
|
|
910 ;;; sysdep.el ends here
|
|
|
911
|
|
|
912 ;;;(sysdep.el) Local Variables:
|
|
|
913 ;;;(sysdep.el) eval: (put 'sysdep-defun 'lisp-indent-function 'defun)
|
|
|
914 ;;;(sysdep.el) eval: (put 'sysdep-defalias 'lisp-indent-function 'defun)
|
|
|
915 ;;;(sysdep.el) eval: (put 'sysdep-defconst 'lisp-indent-function 'defun)
|
|
|
916 ;;;(sysdep.el) eval: (put 'sysdep-defvar 'lisp-indent-function 'defun)
|
|
|
917 ;;;(sysdep.el) End:
|
