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0
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1 ;;; terminal.el --- terminal emulator for GNU Emacs.
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2 ;; Keywords: comm, terminals
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3
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4 ;; Copyright (C) 1986, 1987, 1988, 1989, 1993 Free Software Foundation, Inc.
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5 ;; Written by Richard Mlynarik, November 1986.
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6 ;; Face and attribute support added by Richard Mlynarik, April 1996.
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7
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8 ;; This file is part of XEmacs.
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9
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10 ;; XEmacs is free software; you can redistribute it and/or modify it
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11 ;; under the terms of the GNU General Public License as published by
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12 ;; the Free Software Foundation; either version 2, or (at your option)
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13 ;; any later version.
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14
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15 ;; XEmacs is distributed in the hope that it will be useful, but
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16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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18 ;; General Public License for more details.
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19
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20 ;; You should have received a copy of the GNU General Public License
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16
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21 ;; along with XEmacs; see the file COPYING. If not, write to the
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22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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23 ;; Boston, MA 02111-1307, USA.
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0
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24
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25 ;;; Synched up with: Not synched with FSF.
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26
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27 ;;#### TODO
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28 ;;#### terminfo?
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29
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30 ;;#### One probably wants to do setenv MORE -c when running with
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31 ;;#### more-processing enabled.
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32
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33 (provide 'terminal)
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34 (require 'ehelp)
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35
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36 (defvar terminal-escape-char ?\C-^
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37 "*All characters except for this are passed verbatim through the
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38 terminal-emulator. This character acts as a prefix for commands
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39 to the emulator program itself. Type this character twice to send
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40 it through the emulator. Type ? after typing it for a list of
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41 possible commands.
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42 This variable is local to each terminal-emulator buffer.")
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43
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44 (defvar terminal-scrolling t
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45 "*If non-nil, the terminal-emulator will `scroll' when output occurs
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46 past the bottom of the screen. If nil, output will `wrap' to the top
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47 of the screen.
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48 This variable is local to each terminal-emulator buffer.")
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49
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50 (defvar terminal-more-processing t
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51 "*If non-nil, do more-processing.
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52 This variable is local to each terminal-emulator buffer.")
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53
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54 ;; If you are the sort of loser who uses scrolling without more breaks
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55 ;; and expects to actually see anything, you should probably set this to
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56 ;; around 400
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57 (defvar terminal-redisplay-interval 5000
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58 "*Maximum number of characters which will be processed by the
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59 terminal-emulator before a screen redisplay is forced.
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60 Set this to a large value for greater throughput,
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61 set it smaller for more frequent updates but overall slower
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62 performance.")
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63
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64 (defvar terminal-more-break-insertion
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65 "*** More break -- Press space to continue ***")
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66
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67 (defvar terminal-escape-map nil)
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68 (defvar terminal-map nil)
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69 (defvar terminal-more-break-map nil)
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70 (if terminal-map
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71 nil
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72 (let ((map (make-keymap)))
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73 (set-keymap-name map 'terminal-map)
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74
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75 (let ((meta-prefix-char -1)
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76 (s (make-string 1 0))
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77 (i 0))
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78 (while (< i 256)
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79 (aset s 0 i)
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80 (define-key map s 'te-pass-through)
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81 (setq i (1+ i))))
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82
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83 ;(define-key map "\C-l"
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84 ; '(lambda () (interactive) (te-pass-through) (redraw-display)))
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85 (setq terminal-map map)))
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86
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87 (if terminal-escape-map
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88 nil
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89 (let ((map (make-keymap)))
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90 (set-keymap-name map 'terminal-escape-map)
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91 (let ((s (make-string 1 ?0)))
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92 (while (<= (aref s 0) ?9)
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93 (define-key map s 'digit-argument)
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94 (aset s 0 (1+ (aref s 0)))))
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95 (define-key map "b" 'switch-to-buffer)
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96 (define-key map "o" 'other-window)
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97 (define-key map "e" 'te-set-escape-char)
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98 (define-key map "\C-l" 'redraw-display)
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99 (define-key map "\C-o" 'te-flush-pending-output)
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100 (define-key map "m" 'te-toggle-more-processing)
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101 (define-key map "x" 'te-escape-extended-command)
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102 (define-key map "?" 'te-escape-help)
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103 (define-key map (char-to-string help-char) 'te-escape-help)
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104 (setq terminal-escape-map map)))
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105
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106 (defvar te-escape-command-alist '())
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107 (if te-escape-command-alist
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108 nil
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109 (setq te-escape-command-alist
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110 '(("Set Escape Character" . te-set-escape-char)
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111 ("Refresh" . redraw-display)
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112 ("Record Output" . te-set-output-log)
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113 ("Photo" . te-set-output-log)
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114 ("Tofu" . te-tofu) ;; confuse the uninitiated
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115 ("Stuff Input" . te-stuff-string)
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116 ("Flush Pending Output" . te-flush-pending-output)
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117 ("Enable More Processing" . te-enable-more-processing)
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118 ("Disable More Processing" . te-disable-more-processing)
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119 ("Scroll at end of page" . te-do-scrolling)
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120 ("Wrap at end of page" . te-do-wrapping)
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121 ("Switch To Buffer" . switch-to-buffer)
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122 ("Other Window" . other-window)
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123 ("Kill Buffer" . kill-buffer)
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124 ("Help" . te-escape-help)
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125 ("Set Redisplay Interval" . te-set-redisplay-interval)
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126 )))
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127
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128 ;(setq terminal-more-break-map nil)
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129 (if terminal-more-break-map
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130 nil
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131 (let ((map (make-keymap)))
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132 (set-keymap-name map 'terminal-more-break-map)
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133
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134 (let ((meta-prefix-char -1)
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135 (s (make-string 1 0))
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136 (i 0))
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137 (while (< i 256)
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138 (aset s 0 i)
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139 (define-key map s 'te-more-break-unwind)
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140 (setq i (1+ i))))
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141
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142 (define-key map (char-to-string help-char) 'te-more-break-help)
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143 (define-key map " " 'te-more-break-resume)
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144 (define-key map "\C-l" 'redraw-display)
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145 (define-key map "\C-o" 'te-more-break-flush-pending-output)
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146 ;;#### this isn't right
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147 ;(define-key map "\^?" 'te-more-break-flush-pending-output) ;DEL
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148 (define-key map "\r" 'te-more-break-advance-one-line)
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149
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150 (setq terminal-more-break-map map)))
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151
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152 (defvar te-width)
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153 (defvar te-height)
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154 (defvar te-process)
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155 (defvar te-pending-output)
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156 (defvar te-saved-point)
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157 (defvar te-pending-output-info)
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158 (defvar te-log-buffer)
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159 (defvar te-more-count)
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160 (defvar te-redisplay-count)
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161 (defvar te-current-face)
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162 (defvar te-current-attributes)
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163
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164 (make-face 'terminal-default)
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165
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166 (make-face 'terminal-standout)
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167 (if (not (face-differs-from-default-p 'terminal-standout))
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168 (copy-face 'bold 'terminal-standout))
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169
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170 (make-face 'terminal-underline)
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171 (cond ((face-differs-from-default-p 'terminal-underline))
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172 ((find-face 'underline)
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173 (copy-face 'underline 'terminal-underline))
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174 (t
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175 (set-face-underline-p 'terminal-underline t)))
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176
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177 (make-face 'terminal-standout-underline)
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178 (cond ((face-differs-from-default-p 'terminal-standout-underline))
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179 (t
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180 (copy-face 'terminal-standout 'terminal-standout-underline)
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181 (set-face-underline-p 'terminal-standout-underline t)))
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182
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183 (defun te-insert-blank (count)
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184 (let ((p (point)))
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185 (insert-char ?\ count)
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186 (put-text-property p (point) 'face 'terminal-default)))
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187
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188
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189 ;;;; escape map
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190
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191 (defun te-escape-p (event)
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192 (cond ((eventp terminal-escape-char)
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193 (cond ((key-press-event-p event)
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194 (and (key-press-event-p terminal-escape-char)
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195 (= (event-modifier-bits event)
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196 (event-modifier-bits terminal-escape-char))
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197 (eq (event-key event)
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198 (event-key terminal-escape-char))))
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199 ((button-press-event-p event)
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200 (and (button-press-event-p terminal-escape-char)
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201 (= (event-modifier-bits event)
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202 (event-modifier-bits terminal-escape-char))
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203 (eq (event-button event)
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204 (event-button terminal-escape-char))))
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205 (t nil)))
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206 ((numberp terminal-escape-char)
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207 (let ((c (event-to-character event nil t nil)))
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208 (and c (= c terminal-escape-char))))
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209 (t
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210 nil)))
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211
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212
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213 (defun te-escape ()
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214 (interactive)
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215 (let ((c (let ((cursor-in-echo-area t)
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216 (prompt (if prefix-arg
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217 (format "Emacs Terminal escape> %d "
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218 (prefix-numeric-value prefix-arg))
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219 "Emacs Terminal escape> ")))
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220 (message "%s" prompt)
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221 (let ((e (next-command-event)))
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222 (while (button-release-event-p e)
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223 (setq e (next-command-event e)))
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224 (if (te-escape-p e)
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225 e
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226 (progn
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227 (setq unread-command-event e)
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228 (lookup-key terminal-escape-map
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229 (read-key-sequence prompt))))))))
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230 (cond ((eventp c)
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231 (message nil)
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232 (copy-event c last-command-event)
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233 (let ((terminal-escape-char -259))
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234 (te-pass-through)))
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235 (c
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236 (call-interactively c)))))
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237
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238 (defun te-escape-help ()
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239 "Provide help on commands available after terminal-escape-char is typed."
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240 (interactive)
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241 (message "Terminal emulator escape help...")
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242 (let ((char (single-key-description terminal-escape-char)))
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243 (with-electric-help
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244 (function (lambda ()
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245 (princ (format "Terminal-emulator escape, invoked by \"%s\"
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246 Type \"%s\" twice to send a single \"%s\" through.
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247
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248 Other chars following \"%s\" are interpreted as follows:\n"
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249 char char char char))
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250
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251 (princ (substitute-command-keys "\\{terminal-escape-map}\n"))
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252 (princ (format "\nSubcommands of \"%s\" (%s)\n"
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253 (where-is-internal 'te-escape-extended-command
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254 terminal-escape-map t)
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255 'te-escape-extended-command))
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256 (let ((l (if (fboundp 'sortcar)
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257 (sortcar (copy-sequence te-escape-command-alist)
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258 'string<)
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259 (sort (copy-sequence te-escape-command-alist)
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260 (function (lambda (a b)
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261 (string< (car a) (car b))))))))
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262 (while l
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263 (let ((doc (or (documentation (cdr (car l)))
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264 "Not documented")))
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265 (if (string-match "\n" doc)
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266 ;; just use first line of documentation
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267 (setq doc (substring doc 0 (match-beginning 0))))
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268 (princ " \"")
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269 (princ (car (car l)))
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270 (princ "\":\n ")
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271 (princ doc)
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272 (write-char ?\n))
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273 (setq l (cdr l))))
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274 nil)))))
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275
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276
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277
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278 (defun te-escape-extended-command ()
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279 (interactive)
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280 (let ((c (let ((completion-ignore-case t))
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281 (completing-read "terminal command: "
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282 te-escape-command-alist
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283 nil t))))
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284 (if c
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285 (catch 'foo
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286 (setq c (downcase c))
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287 (let ((l te-escape-command-alist))
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288 (while l
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289 (if (string= c (downcase (car (car l))))
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290 (throw 'foo (call-interactively (cdr (car l))))
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291 (setq l (cdr l)))))))))
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292
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293 ;; not used.
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294 (defun te-escape-extended-command-unread ()
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295 (interactive)
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296 (setq unread-command-event last-command-event)
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297 (te-escape-extended-command))
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298
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299 (defun te-set-escape-char (c)
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300 "Change the terminal-emulator escape character."
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301 (interactive (list (let ((cursor-in-echo-area t))
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302 (message "Set escape character to: ")
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303 (let ((e (next-command-event)))
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304 (while (button-release-event-p e)
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305 (setq e (next-command-event e)))
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306 e))))
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307 (cond ((te-escape-p c)
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308 (message "\"%s\" is escape char"))
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309 ((and (eventp terminal-escape-char)
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310 (event-to-character terminal-escape-char nil t nil))
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311 (message "\"%s\" is now escape; \"%s\" passes though"
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312 (single-key-description c)
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313 (single-key-description terminal-escape-char)))
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314 (t
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315 (message "\"%s\" is now escape"
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316 (single-key-description c))
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317 ;; Let mouse-events, for example, go back to looking at global map
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318 (local-unset-key (vector terminal-escape-char))))
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319 (local-set-key (vector c) 'te-escape) ;ensure it's defined
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320 (setq terminal-escape-char c))
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321
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322
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323 (defun te-stuff-string (string)
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324 "Read a string to send to through the terminal emulator
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325 as though that string had been typed on the keyboard.
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326
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327 Very poor man's file transfer protocol."
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328 (interactive "sStuff string: ")
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329 (process-send-string te-process string))
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330
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331 (defun te-set-output-log (name)
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332 "Record output from the terminal emulator in a buffer."
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333 (interactive (list (if te-log-buffer
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334 nil
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335 (read-buffer "Record output in buffer: "
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336 (format "%s output-log"
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337 (buffer-name (current-buffer)))
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338 nil))))
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339 (if (or (null name) (equal name ""))
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340 (progn (setq te-log-buffer nil)
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341 (message "Output logging off."))
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342 (if (get-buffer name)
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343 nil
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344 (save-excursion
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345 (set-buffer (get-buffer-create name))
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346 (fundamental-mode)
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347 (buffer-disable-undo (current-buffer))
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348 (erase-buffer)))
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349 (setq te-log-buffer (get-buffer name))
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350 (message "Recording terminal emulator output into buffer \"%s\""
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351 (buffer-name te-log-buffer))))
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352
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353 (defun te-tofu ()
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354 "Discontinue output log."
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355 (interactive)
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356 (te-set-output-log nil))
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357
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358
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359 (defun te-toggle (sym arg)
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360 (set sym (cond ((not (numberp arg)) arg)
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361 ((= arg 1) (not (symbol-value sym)))
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362 ((< arg 0) nil)
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363 (t t))))
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364
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365 (defun te-toggle-more-processing (arg)
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366 (interactive "p")
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367 (message (if (te-toggle 'terminal-more-processing arg)
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368 "More processing on" "More processing off"))
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369 (if terminal-more-processing (setq te-more-count -1)))
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370
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371 (defun te-toggle-scrolling (arg)
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372 (interactive "p")
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373 (message (if (te-toggle 'terminal-scrolling arg)
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374 "Scroll at end of page" "Wrap at end of page")))
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375
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376 (defun te-enable-more-processing ()
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377 "Enable ** MORE ** processing"
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378 (interactive)
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379 (te-toggle-more-processing t))
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380
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381 (defun te-disable-more-processing ()
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382 "Disable ** MORE ** processing"
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383 (interactive)
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384 (te-toggle-more-processing nil))
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385
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386 (defun te-do-scrolling ()
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387 "Scroll at end of page (yuck)"
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388 (interactive)
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389 (te-toggle-scrolling t))
|
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|
390
|
|
|
391 (defun te-do-wrapping ()
|
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|
392 "Wrap to top of window at end of page"
|
|
|
393 (interactive)
|
|
|
394 (te-toggle-scrolling nil))
|
|
|
395
|
|
|
396
|
|
|
397 (defun te-set-redisplay-interval (arg)
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|
|
398 "Set the maximum interval (in output characters) between screen updates.
|
|
|
399 Set this number to large value for greater throughput,
|
|
|
400 set it smaller for more frequent updates (but overall slower performance."
|
|
|
401 (interactive "NMax number of output chars between redisplay updates: ")
|
|
|
402 (setq arg (max arg 1))
|
|
|
403 (setq terminal-redisplay-interval arg
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|
|
404 te-redisplay-count 0))
|
|
|
405
|
|
|
406 ;;;; more map
|
|
|
407
|
|
|
408 ;; every command -must- call te-more-break-unwind
|
|
|
409 ;; or grave lossage will result
|
|
|
410
|
|
|
411 (put 'te-more-break-unread 'suppress-keymap t)
|
|
|
412 (defun te-more-break-unread ()
|
|
|
413 (interactive)
|
|
|
414 (if (te-escape-p last-command-event)
|
|
|
415 (call-interactively 'te-escape)
|
|
|
416 (message "Continuing from more break (\"%s\" typed, %d chars output pending...)"
|
|
|
417 (single-key-description last-command-event)
|
|
|
418 (te-pending-output-length))
|
|
|
419 (setq te-more-count 259259)
|
|
|
420 (te-more-break-unwind)
|
|
|
421 (let ((terminal-more-processing nil))
|
|
|
422 (te-pass-through))))
|
|
|
423
|
|
|
424 (defun te-more-break-resume ()
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|
|
425 "Proceed past the **MORE** break,
|
|
|
426 allowing the next page of output to appear"
|
|
|
427 (interactive)
|
|
|
428 (message "Continuing from more break")
|
|
|
429 (te-more-break-unwind))
|
|
|
430
|
|
|
431 (defun te-more-break-help ()
|
|
|
432 "Provide help on commands available in a terminal-emulator **MORE** break"
|
|
|
433 (interactive)
|
|
|
434 (message "Terminal-emulator more break help...")
|
|
|
435 (sit-for 0)
|
|
|
436 (with-electric-help
|
|
|
437 (function (lambda ()
|
|
|
438 (princ "Terminal-emulator more break.\n\n")
|
|
|
439 (princ (format "Type \"%s\" (te-more-break-resume)\n%s\n"
|
|
|
440 (where-is-internal 'te-more-break-resume
|
|
|
441 terminal-more-break-map t)
|
|
|
442 (documentation 'te-more-break-resume)))
|
|
|
443 (princ (substitute-command-keys "\\{terminal-more-break-map}\n"))
|
|
|
444 (princ "Any other key is passed through to the program
|
|
|
445 running under the terminal emulator and disables more processing until
|
|
|
446 all pending output has been dealt with.")
|
|
|
447 nil))))
|
|
|
448
|
|
|
449
|
|
|
450 (defun te-more-break-advance-one-line ()
|
|
|
451 "Allow one more line of text to be output before doing another more break."
|
|
|
452 (interactive)
|
|
|
453 (setq te-more-count 1)
|
|
|
454 (te-more-break-unwind))
|
|
|
455
|
|
|
456 (defun te-more-break-flush-pending-output ()
|
|
|
457 "Discard any output which has been received by the terminal emulator but
|
|
|
458 not yet proceesed and then proceed from the more break."
|
|
|
459 (interactive)
|
|
|
460 (te-more-break-unwind)
|
|
|
461 (te-flush-pending-output))
|
|
|
462
|
|
|
463 (defun te-flush-pending-output ()
|
|
|
464 "Discard any as-yet-unprocessed output which has been received by
|
|
|
465 the terminal emulator."
|
|
|
466 (interactive)
|
|
|
467 ;; this could conceivably be confusing in the presence of
|
|
|
468 ;; escape-sequences spanning process-output chunks
|
|
|
469 (if (null (cdr te-pending-output))
|
|
|
470 (message "(There is no output pending)")
|
|
|
471 (let ((length (te-pending-output-length)))
|
|
|
472 (message "Flushing %d chars of pending output" length)
|
|
|
473 (setq te-pending-output
|
|
|
474 (list 0 (format "\n*** %d chars of pending output flushed ***\n"
|
|
|
475 length)))
|
|
|
476 (te-update-pending-output-display)
|
|
|
477 (te-process-output nil)
|
|
|
478 (sit-for 0))))
|
|
|
479
|
|
|
480
|
|
|
481 (defun te-pass-through ()
|
|
|
482 "Send the last character typed through the terminal-emulator
|
|
|
483 without any interpretation"
|
|
|
484 (interactive)
|
|
|
485 (if (te-escape-p last-command-event)
|
|
|
486 (call-interactively 'te-escape)
|
|
|
487 (and terminal-more-processing
|
|
|
488 (null (cdr te-pending-output))
|
|
|
489 (te-set-more-count nil))
|
|
|
490 (let ((c (event-to-character last-command-event nil t nil)))
|
|
|
491 (if c (process-send-string te-process (make-string 1 c))))
|
|
|
492 (te-process-output t)))
|
|
|
493
|
|
|
494 (defun te-set-window-start ()
|
|
|
495 (let* ((w (get-buffer-window (current-buffer)))
|
|
|
496 (h (if w (window-height w))))
|
|
|
497 (cond ((not w)) ; buffer not displayed
|
|
|
498 ((>= h (/ (- (point) (point-min)) (1+ te-width)))
|
|
|
499 ;; this is the normal case
|
|
|
500 (set-window-start w (point-min)))
|
|
|
501 ;; this happens if some vandal shrinks our window.
|
|
|
502 ((>= h (/ (- (point-max) (point)) (1+ te-width)))
|
|
|
503 (set-window-start w (- (point-max) (* h (1+ te-width)) -1)))
|
|
|
504 ;; I give up.
|
|
|
505 (t nil))))
|
|
|
506
|
|
|
507 (defun te-pending-output-length ()
|
|
|
508 (let ((length (car te-pending-output))
|
|
|
509 (tem (cdr te-pending-output)))
|
|
|
510 (while tem
|
|
|
511 (setq length (+ length (length (car tem))) tem (cdr tem)))
|
|
|
512 length))
|
|
|
513
|
|
|
514 ;;;; more break hair
|
|
|
515
|
|
|
516 (defun te-more-break ()
|
|
|
517 (te-set-more-count t)
|
|
|
518 (make-local-variable 'te-more-old-point)
|
|
|
519 (setq te-more-old-point (point))
|
|
|
520 (make-local-variable 'te-more-old-local-map)
|
|
|
521 (setq te-more-old-local-map (current-local-map))
|
|
|
522 (use-local-map terminal-more-break-map)
|
|
|
523 (make-local-variable 'te-more-old-filter)
|
|
|
524 (setq te-more-old-filter (process-filter te-process))
|
|
|
525 (make-local-variable 'te-more-old-mode-line-format)
|
|
|
526 (setq te-more-old-mode-line-format mode-line-format
|
|
|
527 mode-line-format (list "-- **MORE** "
|
|
|
528 mode-line-buffer-identification
|
|
|
529 "%-"))
|
|
|
530 (set-process-filter te-process
|
|
|
531 (function (lambda (process string)
|
|
|
532 (save-excursion
|
|
|
533 (set-buffer (process-buffer process))
|
|
|
534 (setq te-pending-output (nconc te-pending-output
|
|
|
535 (list string))))
|
|
|
536 (te-update-pending-output-display))))
|
|
|
537 (te-update-pending-output-display)
|
|
|
538 (if (eq (window-buffer (selected-window)) (current-buffer))
|
|
|
539 (message "More break "))
|
|
|
540 (or (eobp)
|
|
|
541 (null terminal-more-break-insertion)
|
|
|
542 (save-excursion
|
|
|
543 (forward-char 1)
|
|
|
544 (delete-region (point) (+ (point) te-width))
|
|
|
545 (insert terminal-more-break-insertion)))
|
|
|
546 (run-hooks 'terminal-more-break-hook)
|
|
|
547 (sit-for 0) ;get display to update
|
|
|
548 (throw 'te-process-output t))
|
|
|
549
|
|
|
550 (defun te-more-break-unwind ()
|
|
|
551 (interactive)
|
|
|
552 (use-local-map te-more-old-local-map)
|
|
|
553 (set-process-filter te-process te-more-old-filter)
|
|
|
554 (goto-char te-more-old-point)
|
|
|
555 (setq mode-line-format te-more-old-mode-line-format)
|
|
|
556 (set-buffer-modified-p (buffer-modified-p))
|
|
|
557 (let ((buffer-read-only nil))
|
|
|
558 (cond ((eobp))
|
|
|
559 (terminal-more-break-insertion
|
|
|
560 (forward-char 1)
|
|
|
561 (delete-region (point)
|
|
|
562 (+ (point) (length terminal-more-break-insertion)))
|
|
|
563 (te-insert-blank te-width)
|
|
|
564 (goto-char te-more-old-point)))
|
|
|
565 (setq te-more-old-point nil)
|
|
|
566 (let ((te-more-count 259259))
|
|
|
567 (te-newline)))
|
|
|
568 ;(sit-for 0)
|
|
|
569 (te-process-output t))
|
|
|
570
|
|
|
571 (defun te-set-more-count (newline)
|
|
|
572 (let ((line (/ (- (point) (point-min)) (1+ te-width))))
|
|
|
573 (if newline (setq line (1+ line)))
|
|
|
574 (cond ((= line te-height)
|
|
|
575 (setq te-more-count te-height))
|
|
|
576 ;#### something is strange. Investigate this!
|
|
|
577 ((= line (1- te-height))
|
|
|
578 (setq te-more-count te-height))
|
|
|
579 ((or (< line (/ te-height 2))
|
|
|
580 (> (- te-height line) 10))
|
|
|
581 ;; break at end of this page
|
|
|
582 (setq te-more-count (- te-height line)))
|
|
|
583 (t
|
|
|
584 ;; migrate back towards top (ie bottom) of screen.
|
|
|
585 (setq te-more-count (- te-height
|
|
|
586 (if (> te-height 10) 2 1)))))))
|
|
|
587
|
|
|
588
|
|
|
589 ;;;; More or less straight-forward terminal escapes
|
|
|
590
|
|
|
591 ;; ^j, meaning `newline' to non-display programs.
|
|
|
592 ;; (Who would think of ever writing a system which doesn't understand
|
|
|
593 ;; display terminals natively? Un*x: The Operating System of the Future.)
|
|
|
594 (defun te-newline ()
|
|
|
595 "Move down a line, optionally do more processing, perhaps wrap/scroll,
|
|
|
596 move to start of new line, clear to end of line."
|
|
|
597 (end-of-line)
|
|
|
598 (cond ((not terminal-more-processing))
|
|
|
599 ((< (setq te-more-count (1- te-more-count)) 0)
|
|
|
600 (te-set-more-count t))
|
|
|
601 ((eq te-more-count 0)
|
|
|
602 ;; this doesn't return
|
|
|
603 (te-more-break)))
|
|
|
604 (if (eobp)
|
|
|
605 (progn
|
|
|
606 (delete-region (point-min) (+ (point-min) te-width))
|
|
|
607 (goto-char (point-min))
|
|
|
608 (if terminal-scrolling
|
|
|
609 (progn (delete-char 1)
|
|
|
610 (goto-char (point-max))
|
|
|
611 (insert ?\n))))
|
|
|
612 (forward-char 1)
|
|
|
613 (delete-region (point) (+ (point) te-width)))
|
|
|
614 (te-insert-blank te-width)
|
|
|
615 (beginning-of-line)
|
|
|
616 (te-set-window-start))
|
|
|
617
|
|
|
618 ;; ^p ^j
|
|
|
619 ;; Handle the `do' or `nl' termcap capability.
|
|
|
620 ;;#### I am not sure why this broken, obsolete, capability is here.
|
|
|
621 ;;#### Perhaps it is for VIle. No comment was made about why it
|
|
|
622 ;;#### was added (in "Sun Dec 6 01:22:27 1987 Richard Stallman")
|
|
|
623 (defun te-down-vertically-or-scroll ()
|
|
|
624 "Move down a line vertically, or scroll at bottom."
|
|
|
625 (let ((column (current-column)))
|
|
|
626 (end-of-line)
|
|
|
627 (if (eobp)
|
|
|
628 (progn
|
|
|
629 (delete-region (point-min) (+ (point-min) te-width))
|
|
|
630 (goto-char (point-min))
|
|
|
631 (delete-char 1)
|
|
|
632 (goto-char (point-max))
|
|
|
633 (insert ?\n)
|
|
|
634 (te-insert-blank te-width)
|
|
|
635 (beginning-of-line))
|
|
|
636 (forward-line 1))
|
|
|
637 (move-to-column column))
|
|
|
638 (te-set-window-start))
|
|
|
639
|
|
|
640 ; ^p = x+32 y+32
|
|
|
641 (defun te-move-to-position ()
|
|
|
642 ;; must offset by #o40 since cretinous unix won't send a 004 char through
|
|
|
643 (let ((y (- (te-get-char) 32))
|
|
|
644 (x (- (te-get-char) 32)))
|
|
|
645 (if (or (> x te-width)
|
|
|
646 (> y te-height))
|
|
|
647 () ;(error "fucked %d %d" x y)
|
|
|
648 (goto-char (+ (point-min) x (* y (1+ te-width))))
|
|
|
649 ;(te-set-window-start?)
|
|
|
650 ))
|
|
|
651 (setq te-more-count -1))
|
|
|
652
|
|
|
653
|
|
|
654
|
|
|
655 ;; ^p c
|
|
|
656 (defun te-clear-rest-of-line ()
|
|
|
657 (save-excursion
|
|
|
658 (let ((n (- (point) (progn (end-of-line) (point)))))
|
|
|
659 (delete-region (point) (+ (point) n))
|
|
|
660 (te-insert-blank (- n)))))
|
|
|
661
|
|
|
662
|
|
|
663 ;; ^p C
|
|
|
664 (defun te-clear-rest-of-screen ()
|
|
|
665 (save-excursion
|
|
|
666 (te-clear-rest-of-line)
|
|
|
667 (while (progn (end-of-line) (not (eobp)))
|
|
|
668 (forward-char 1) (end-of-line)
|
|
|
669 (delete-region (- (point) te-width) (point))
|
|
|
670 (te-insert-blank te-width))))
|
|
|
671
|
|
|
672
|
|
|
673 ;; ^p ^l
|
|
|
674 (defun te-clear-screen ()
|
|
|
675 ;; regenerate buffer to compensate for (nonexistent!!) bugs.
|
|
|
676 (erase-buffer)
|
|
|
677 (let ((i 0))
|
|
|
678 (while (< i te-height)
|
|
|
679 (setq i (1+ i))
|
|
|
680 (te-insert-blank te-width)
|
|
|
681 (insert ?\n)))
|
|
|
682 (delete-region (1- (point-max)) (point-max))
|
|
|
683 (goto-char (point-min))
|
|
|
684 (setq te-more-count -1))
|
|
|
685
|
|
|
686
|
|
|
687 ;; ^p ^o count+32
|
|
|
688 (defun te-insert-lines ()
|
|
|
689 (if (not (bolp))
|
|
|
690 ();(error "fooI")
|
|
|
691 (save-excursion
|
|
|
692 (let* ((line (- te-height (/ (- (point) (point-min)) (1+ te-width)) -1))
|
|
|
693 (n (min (- (te-get-char) ?\ ) line))
|
|
|
694 (i 0))
|
|
|
695 (delete-region (- (point-max) (* n (1+ te-width))) (point-max))
|
|
|
696 (if (eq (point) (point-max)) (insert ?\n))
|
|
|
697 (while (< i n)
|
|
|
698 (setq i (1+ i))
|
|
|
699 (te-insert-blank te-width)
|
|
|
700 (or (eq i line) (insert ?\n))))))
|
|
|
701 (setq te-more-count -1))
|
|
|
702
|
|
|
703
|
|
|
704 ;; ^p ^k count+32
|
|
|
705 (defun te-delete-lines ()
|
|
|
706 (if (not (bolp))
|
|
|
707 ();(error "fooD")
|
|
|
708 (let* ((line (- te-height (/ (- (point) (point-min)) (1+ te-width)) -1))
|
|
|
709 (n (min (- (te-get-char) ?\ ) line))
|
|
|
710 (i 0))
|
|
|
711 (delete-region (point)
|
|
|
712 (min (+ (point) (* n (1+ te-width))) (point-max)))
|
|
|
713 (save-excursion
|
|
|
714 (goto-char (point-max))
|
|
|
715 (while (< i n)
|
|
|
716 (setq i (1+ i))
|
|
|
717 (te-insert-blank te-width)
|
|
|
718 (or (eq i line) (insert ?\n))))))
|
|
|
719 (setq te-more-count -1))
|
|
|
720
|
|
|
721 ;; ^p ^a
|
|
|
722 (defun te-beginning-of-line ()
|
|
|
723 (beginning-of-line))
|
|
|
724
|
|
|
725 ;; ^p ^b
|
|
|
726 (defun te-backward-char ()
|
|
|
727 (if (not (bolp))
|
|
|
728 (backward-char 1)))
|
|
|
729
|
|
|
730 ;; ^p ^f
|
|
|
731 (defun te-forward-char ()
|
|
|
732 (if (not (eolp))
|
|
|
733 (forward-char 1)))
|
|
|
734
|
|
|
735
|
|
|
736 ;; ^p *
|
|
|
737 (defun te-change-attribute ()
|
|
|
738 (let* ((attribute (te-get-char))
|
|
|
739 (on (= (te-get-char) ?1))
|
|
|
740 (standout (assq 'standout te-current-attributes))
|
|
|
741 (underline (assq 'underline te-current-attributes))
|
|
|
742 (frob (function (lambda ()
|
|
|
743 ;; This would be even more of a combinatorial mess if I
|
|
|
744 ;; decided I wanted to support anything more than the two
|
|
|
745 ;; standout and underline attributes.
|
|
|
746 (setq te-current-face
|
|
|
747 (or (cdr (assoc te-current-attributes
|
|
|
748 '((((standout . t) (underline . nil))
|
|
|
749 . terminal-standout)
|
|
|
750 (((standout . nil) (underline . t))
|
|
|
751 . terminal-standout)
|
|
|
752 (((standout . t) (underline . nil))
|
|
|
753 . terminal-standout-underline))))
|
|
|
754 'terminal-default))))))
|
|
|
755 (cond ((= attribute ?+) ;standout on/off
|
|
|
756 (setcdr standout on)
|
|
|
757 (funcall frob))
|
|
|
758 ((= attribute ?_) ;underline on/off
|
|
|
759 (setcdr underline on)
|
|
|
760 (funcall frob))
|
|
|
761 ;; reverse, blink, half-bright, double-bright, blank, protect
|
|
|
762 ;; ??Colours??
|
|
|
763 (t ;; #\space
|
|
|
764 (setcdr underline nil)
|
|
|
765 (setcdr standout nil)
|
|
|
766 (setq te-current-face 'terminal-default)))))
|
|
|
767
|
|
|
768
|
|
|
769 ;; 0177
|
|
|
770 (defun te-delete ()
|
|
|
771 (if (bolp)
|
|
|
772 ()
|
|
|
773 (delete-region (1- (point)) (point))
|
|
|
774 (te-insert-blank 1)
|
|
|
775 (forward-char -1)))
|
|
|
776
|
|
|
777 ;; ^p ^g
|
|
|
778 (defun te-beep ()
|
|
|
779 (beep))
|
|
|
780
|
|
|
781
|
|
|
782 ;; ^p _ count+32
|
|
|
783 (defun te-insert-spaces ()
|
|
|
784 (let* ((p (point))
|
|
|
785 (n (min (- (te-get-char) 32)
|
|
|
786 (- (progn (end-of-line) (point)) p))))
|
|
|
787 (if (<= n 0)
|
|
|
788 nil
|
|
|
789 (delete-char (- n))
|
|
|
790 (goto-char p)
|
|
|
791 (insert-char ?\ n))
|
|
|
792 (goto-char p)))
|
|
|
793
|
|
|
794 ;; ^p d count+32 (should be ^p ^d but cretinous un*x won't send ^d chars!!!)
|
|
|
795 (defun te-delete-char ()
|
|
|
796 (let* ((p (point))
|
|
|
797 (n (min (- (te-get-char) 32)
|
|
|
798 (- (progn (end-of-line) (point)) p))))
|
|
|
799 (if (<= n 0)
|
|
|
800 nil
|
|
|
801 (te-insert-blank n)
|
|
|
802 (goto-char p)
|
|
|
803 (delete-char n))
|
|
|
804 (goto-char p)))
|
|
|
805
|
|
|
806
|
|
|
807
|
|
|
808 ;; disgusting unix-required shit
|
|
|
809 ;; Are we living twenty years in the past yet?
|
|
|
810
|
|
|
811 (defun te-losing-unix ()
|
|
|
812 ;(what lossage)
|
|
|
813 ;(message "fucking-unix: %d" char)
|
|
|
814 )
|
|
|
815
|
|
|
816 ;; ^i
|
|
|
817 (defun te-output-tab ()
|
|
|
818 (let* ((p (point))
|
|
|
819 (x (- p (progn (beginning-of-line) (point))))
|
|
|
820 (l (min (- 8 (logand x 7))
|
|
|
821 (progn (end-of-line) (- (point) p)))))
|
|
|
822 (goto-char (+ p l))))
|
|
|
823
|
|
|
824 ;; Also:
|
|
|
825 ;; ^m => beginning-of-line (for which it -should- be using ^p ^a, right?!!)
|
|
|
826 ;; ^g => te-beep (for which it should use ^p ^g)
|
|
|
827 ;; ^h => te-backward-char (for which it should use ^p ^b)
|
|
|
828
|
|
|
829
|
|
|
830
|
|
|
831 (defun te-filter (process string)
|
|
|
832 (let* ((obuf (current-buffer)))
|
|
|
833 ;; can't use save-excursion, as that preserves point, which we don't want
|
|
|
834 (unwind-protect
|
|
|
835 (progn
|
|
|
836 (set-buffer (process-buffer process))
|
|
|
837 (goto-char te-saved-point)
|
|
|
838 (and (bufferp te-log-buffer)
|
|
|
839 (if (null (buffer-name te-log-buffer))
|
|
|
840 ;; killed
|
|
|
841 (setq te-log-buffer nil)
|
|
|
842 (set-buffer te-log-buffer)
|
|
|
843 (goto-char (point-max))
|
|
|
844 (insert-before-markers string)
|
|
|
845 (set-buffer (process-buffer process))))
|
|
|
846 (setq te-pending-output (nconc te-pending-output (list string)))
|
|
|
847 (te-update-pending-output-display)
|
|
|
848 (te-process-output (eq (current-buffer)
|
|
|
849 (window-buffer (selected-window))))
|
|
|
850 (set-buffer (process-buffer process))
|
|
|
851 (setq te-saved-point (point)))
|
|
|
852 (set-buffer obuf))))
|
|
|
853
|
|
|
854 ;; fucking unix has -such- braindamaged lack of tty control...
|
|
|
855 (defun te-process-output (preemptable)
|
|
|
856 ;;#### There seems no good reason to ever disallow preemption
|
|
|
857 (setq preemptable t)
|
|
|
858 (catch 'te-process-output
|
|
|
859 (let ((buffer-read-only nil)
|
|
|
860 (string nil) ostring start char (matchpos nil))
|
|
|
861 (while (cdr te-pending-output)
|
|
|
862 (setq ostring string
|
|
|
863 start (car te-pending-output)
|
|
|
864 string (car (cdr te-pending-output))
|
|
|
865 char (aref string start))
|
|
|
866 (if (eq (setq start (1+ start)) (length string))
|
|
|
867 (progn (setq te-pending-output
|
|
|
868 (cons 0 (cdr (cdr te-pending-output)))
|
|
|
869 start 0
|
|
|
870 string (car (cdr te-pending-output)))
|
|
|
871 (te-update-pending-output-display))
|
|
|
872 (setcar te-pending-output start))
|
|
|
873 (if (and (> char ?\037) (< char ?\377))
|
|
|
874 (cond ((eolp)
|
|
|
875 ;; unread char
|
|
|
876 (if (eq start 0)
|
|
|
877 (setq te-pending-output
|
|
|
878 (cons 0 (cons (make-string 1 char)
|
|
|
879 (cdr te-pending-output))))
|
|
|
880 (setcar te-pending-output (1- start)))
|
|
|
881 (te-newline))
|
|
|
882 ((null string)
|
|
|
883 (delete-char 1) (insert char)
|
|
|
884 (put-text-property (1- (point)) (point)
|
|
|
885 'face te-current-face)
|
|
|
886 (te-redisplay-if-necessary 1))
|
|
|
887 (t
|
|
|
888 (let ((end (or (and (eq ostring string) matchpos)
|
|
|
889 (setq matchpos (string-match
|
|
|
890 "[\000-\037\177-\377]"
|
|
|
891 string start))
|
|
|
892 (length string))))
|
|
|
893 (delete-char 1) (insert char)
|
|
|
894 (setq char (point))
|
|
|
895 (put-text-property (1- char) char 'face te-current-face)
|
|
|
896 (end-of-line)
|
|
|
897 (setq end (min end (+ start (- (point) char))))
|
|
|
898 (goto-char char)
|
|
|
899 (if (eq end matchpos) (setq matchpos nil))
|
|
|
900 (delete-region (point) (+ (point) (- end start)))
|
|
|
901 (setq char (point))
|
|
|
902 (insert (if (and (eq start 0)
|
|
|
903 (eq end (length string)))
|
|
|
904 string
|
|
|
905 (substring string start end)))
|
|
|
906 (put-text-property char (point) 'face te-current-face)
|
|
|
907 (if (eq end (length string))
|
|
|
908 (setq te-pending-output
|
|
|
909 (cons 0 (cdr (cdr te-pending-output))))
|
|
|
910 (setcar te-pending-output end))
|
|
|
911 (te-redisplay-if-necessary (1+ (- end start))))))
|
|
|
912 ;; I suppose if I split the guts of this out into a separate
|
|
|
913 ;; function we could trivially emulate different terminals
|
|
|
914 ;; Who cares in any case? (Apart from stupid losers using rlogin)
|
|
|
915 (funcall
|
|
|
916 (if (eq char ?\^p)
|
|
|
917 (or (cdr (assq (te-get-char)
|
|
|
918 '((?= . te-move-to-position)
|
|
|
919 (?c . te-clear-rest-of-line)
|
|
|
920 (?C . te-clear-rest-of-screen)
|
|
|
921 (?\C-o . te-insert-lines)
|
|
|
922 (?\C-k . te-delete-lines)
|
|
|
923 (?* . te-change-attribute)
|
|
|
924 ;; not necessary, but help sometimes.
|
|
|
925 (?\C-a . te-beginning-of-line)
|
|
|
926 (?\C-b . te-backward-char)
|
|
|
927 ;; should be C-d, but un*x
|
|
|
928 ;; pty's won't send \004 through!
|
|
|
929 ;; Can you believe this?
|
|
|
930 (?d . te-delete-char)
|
|
|
931 (?_ . te-insert-spaces)
|
|
|
932 ;; random
|
|
|
933 (?\C-f . te-forward-char)
|
|
|
934 (?\C-g . te-beep)
|
|
|
935 (?\C-j . te-down-vertically-or-scroll)
|
|
|
936 (?\C-l . te-clear-screen)
|
|
|
937 )))
|
|
|
938 'te-losing-unix)
|
|
|
939 (or (cdr (assq char
|
|
|
940 '((?\C-j . te-newline)
|
|
|
941 (?\177 . te-delete)
|
|
|
942 ;; Did I ask to be sent these characters?
|
|
|
943 ;; I don't remember doing so, either.
|
|
|
944 ;; (Perhaps some operating system or
|
|
|
945 ;; other is completely incompetent...)
|
|
|
946 (?\C-m . te-beginning-of-line) ;fuck me harder
|
|
|
947 (?\C-g . te-beep) ;again and again!
|
|
|
948 (?\C-h . te-backward-char) ;wa12id!!
|
|
|
949 (?\C-i . te-output-tab)))) ;(spiked)
|
|
|
950 'te-losing-unix))) ;That feels better
|
|
|
951 (te-redisplay-if-necessary 1))
|
|
|
952 (and preemptable
|
|
|
953 (input-pending-p)
|
|
|
954 ;; preemptable output! Oh my!!
|
|
|
955 (throw 'te-process-output t)))))
|
|
|
956 ;; We must update window-point in every window displaying our buffer
|
|
|
957 (let* ((s (selected-window))
|
|
|
958 (w s))
|
|
|
959 (while (not (eq s (setq w (next-window w))))
|
|
|
960 (if (eq (window-buffer w) (current-buffer))
|
|
|
961 (set-window-point w (point))))))
|
|
|
962
|
|
|
963 (defun te-get-char ()
|
|
|
964 (if (cdr te-pending-output)
|
|
|
965 (let ((start (car te-pending-output))
|
|
|
966 (string (car (cdr te-pending-output))))
|
|
|
967 (prog1 (aref string start)
|
|
|
968 (if (eq (setq start (1+ start)) (length string))
|
|
|
969 (setq te-pending-output (cons 0 (cdr (cdr te-pending-output))))
|
|
|
970 (setcar te-pending-output start))))
|
|
|
971 (catch 'char
|
|
|
972 (let ((filter (process-filter te-process)))
|
|
|
973 (unwind-protect
|
|
|
974 (progn
|
|
|
975 (set-process-filter te-process
|
|
|
976 (function (lambda (p s)
|
|
|
977 (or (eq (length s) 1)
|
|
|
978 (setq te-pending-output (list 1 s)))
|
|
|
979 (throw 'char (aref s 0)))))
|
|
|
980 (accept-process-output te-process))
|
|
|
981 (set-process-filter te-process filter))))))
|
|
|
982
|
|
|
983
|
|
|
984 (defun te-redisplay-if-necessary (length)
|
|
|
985 (and (<= (setq te-redisplay-count (- te-redisplay-count length)) 0)
|
|
|
986 (eq (current-buffer) (window-buffer (selected-window)))
|
|
|
987 (waiting-for-user-input-p)
|
|
|
988 (progn (te-update-pending-output-display)
|
|
|
989 (sit-for 0)
|
|
|
990 (setq te-redisplay-count terminal-redisplay-interval))))
|
|
|
991
|
|
|
992 (defun te-update-pending-output-display ()
|
|
|
993 (if (null (cdr te-pending-output))
|
|
|
994 (setq te-pending-output-info "")
|
|
|
995 (let ((length (te-pending-output-length)))
|
|
|
996 (if (< length 1500)
|
|
|
997 (setq te-pending-output-info "")
|
|
|
998 (setq te-pending-output-info (format "(%dK chars output pending) "
|
|
|
999 (/ (+ length 512) 1024))))))
|
|
|
1000 ;; update mode line
|
|
|
1001 (set-buffer-modified-p (buffer-modified-p)))
|
|
|
1002
|
|
|
1003
|
|
|
1004 (defun te-sentinel (process message)
|
|
|
1005 (cond ((eq (process-status process) 'run))
|
|
|
1006 ((null (buffer-name (process-buffer process)))) ;deleted
|
|
|
1007 (t (let ((b (current-buffer)))
|
|
|
1008 (save-excursion
|
|
|
1009 (set-buffer (process-buffer process))
|
|
|
1010 (setq buffer-read-only nil)
|
|
|
1011 (fundamental-mode)
|
|
|
1012 (goto-char (point-max))
|
|
|
1013 (delete-blank-lines)
|
|
|
1014 (delete-horizontal-space)
|
|
|
1015 (insert "\n*******\n" message "*******\n"))
|
|
|
1016 (if (and (eq b (process-buffer process))
|
|
|
1017 (waiting-for-user-input-p))
|
|
|
1018 (progn (goto-char (point-max))
|
|
|
1019 (recenter -1)))))))
|
|
|
1020
|
|
70
|
1021 (defvar te-stty-string "stty -nl new dec echo"
|
|
|
1022 "Command string (to be interpreted by \"sh\") which sets the modes
|
|
|
1023 of the virtual terminal to be appropriate for interactive use.")
|
|
0
|
1024
|
|
|
1025 (defvar explicit-shell-file-name nil
|
|
|
1026 "*If non-nil, is file name to use for explicitly requested inferior shell.")
|
|
|
1027
|
|
|
1028 ;;;###autoload
|
|
|
1029 (defun terminal-emulator (buffer program args &optional width height)
|
|
|
1030 "Under a display-terminal emulator in BUFFER, run PROGRAM on arguments ARGS.
|
|
|
1031 ARGS is a list of argument-strings. Remaining arguments are WIDTH and HEIGHT.
|
|
|
1032 BUFFER's contents are made an image of the display generated by that program,
|
|
|
1033 and any input typed when BUFFER is the current Emacs buffer is sent to that
|
|
|
1034 program an keyboard input.
|
|
|
1035
|
|
|
1036 Interactively, BUFFER defaults to \"*terminal*\" and PROGRAM and ARGS
|
|
|
1037 are parsed from an input-string using your usual shell.
|
|
|
1038 WIDTH and HEIGHT are determined from the size of the current window
|
|
|
1039 -- WIDTH will be one less than the window's width, HEIGHT will be its height.
|
|
|
1040
|
|
|
1041 To switch buffers and leave the emulator, or to give commands
|
|
|
1042 to the emulator itself (as opposed to the program running under it),
|
|
|
1043 type Control-^. The following character is an emulator command.
|
|
|
1044 Type Control-^ twice to send it to the subprogram.
|
|
|
1045 This escape character may be changed using the variable `terminal-escape-char'.
|
|
|
1046
|
|
|
1047 `Meta' characters may not currently be sent through the terminal emulator.
|
|
|
1048
|
|
|
1049 Here is a list of some of the variables which control the behaviour
|
|
|
1050 of the emulator -- see their documentation for more information:
|
|
|
1051 terminal-escape-char, terminal-scrolling, terminal-more-processing,
|
|
|
1052 terminal-redisplay-interval.
|
|
|
1053
|
|
|
1054 This function calls the value of terminal-mode-hook if that exists
|
|
|
1055 and is non-nil after the terminal buffer has been set up and the
|
|
|
1056 subprocess started.
|
|
|
1057
|
|
|
1058 Presently with `termcap' only; if somebody sends us code to make this
|
|
|
1059 work with `terminfo' we will try to use it."
|
|
|
1060 (interactive
|
|
|
1061 (cons (save-excursion
|
|
|
1062 (set-buffer (get-buffer-create "*terminal*"))
|
|
|
1063 (buffer-name (if (or (not (boundp 'te-process))
|
|
|
1064 (null te-process)
|
|
|
1065 (not (eq (process-status te-process)
|
|
|
1066 'run)))
|
|
|
1067 (current-buffer)
|
|
|
1068 (generate-new-buffer "*terminal*"))))
|
|
|
1069 (append
|
|
|
1070 (let* ((default-s
|
|
|
1071 ;; Default shell is same thing M-x shell uses.
|
|
|
1072 (or explicit-shell-file-name
|
|
|
1073 (getenv "ESHELL")
|
|
|
1074 (getenv "SHELL")
|
|
|
1075 "/bin/sh"))
|
|
|
1076 (s (read-shell-command
|
|
|
1077 (format "Run program in emulator: (default %s) "
|
|
|
1078 default-s))))
|
|
|
1079 (if (equal s "")
|
|
|
1080 (list default-s '())
|
|
|
1081 (te-parse-program-and-args s))))))
|
|
|
1082 (switch-to-buffer buffer)
|
|
|
1083 (if (null width) (setq width (- (window-width (selected-window)) 1)))
|
|
|
1084 (if (null height) (setq height (- (window-height (selected-window)) 1)))
|
|
|
1085 (terminal-mode)
|
|
|
1086 (setq te-width width te-height height)
|
|
|
1087 (setq mode-line-buffer-identification
|
|
|
1088 (list (format "Emacs terminal %dx%d: %%b " te-width te-height)
|
|
|
1089 'te-pending-output-info))
|
|
|
1090 (let ((buffer-read-only nil))
|
|
|
1091 (te-clear-screen))
|
|
|
1092 (let (process)
|
|
|
1093 (while (setq process (get-buffer-process (current-buffer)))
|
|
|
1094 (if (y-or-n-p (format "Kill process %s? " (process-name process)))
|
|
|
1095 (delete-process process)
|
|
|
1096 (error "Process %s not killed" (process-name process)))))
|
|
|
1097 (condition-case err
|
|
|
1098 (let ((termcap
|
|
|
1099 ;; Because of Unix Brain Death(tm), we can't change
|
|
|
1100 ;; the terminal type of a running process, and so
|
|
|
1101 ;; terminal size and scrollability are wired-down
|
|
|
1102 ;; at this point. ("Detach? What's that?")
|
|
|
1103 (concat (format "emacs-virtual:co#%d:li#%d:%s:km:"
|
|
|
1104 ;; Sigh. These can't be dynamically changed.
|
|
|
1105 te-width te-height (if terminal-scrolling
|
|
|
1106 "" "ns:"))
|
|
|
1107 ;;-- Basic things
|
|
|
1108 ;; cursor-motion, bol, forward/backward char
|
|
|
1109 "cm=^p=%+ %+ :cr=^p^a:le=^p^b:nd=^p^f:"
|
|
|
1110 ;; newline, clear eof/eof, audible bell
|
|
|
1111 "nw=^j:ce=^pc:cd=^pC:cl=^p^l:bl=^p^g:"
|
|
|
1112 ;; insert/delete char/line
|
|
|
1113 "IC=^p_%+ :DC=^pd%+ :AL=^p^o%+ :DL=^p^k%+ :"
|
|
|
1114 ;;-- Not-widely-known (ie nonstandard) flags, which mean
|
|
|
1115 ;; o writing in the last column of the last line
|
|
|
1116 ;; doesn't cause idiotic scrolling, and
|
|
|
1117 ;; o don't use idiotische c-s/c-q sogenannte
|
|
|
1118 ;; ``flow control'' auf keinen Fall.
|
|
|
1119 "LP:NF:"
|
|
|
1120 ;;-- For stupid or obsolete programs
|
|
|
1121 "ic=^p_!:dc=^pd!:al=^p^o!:dl=^p^k!:ho=^p= :"
|
|
|
1122 ;;-- For disgusting programs.
|
|
|
1123 ;; (VI? What losers need these, I wonder?)
|
|
|
1124 "im=:ei=:dm=:ed=:mi:do=^p^j:nl=^p^j:bs:"
|
|
|
1125 "ms:me=^p* :"
|
|
|
1126 (if (face-equal 'terminal-default 'terminal-standout)
|
|
|
1127 "" "so=^p*+1:se=^p*+0")
|
|
|
1128 (if (face-equal 'terminal-default 'terminal-underline)
|
|
|
1129 "" "us=^p*_1:ue=^p*_0")
|
|
|
1130 )))
|
|
|
1131 (if (fboundp 'start-subprocess)
|
|
|
1132 ;; this winning function would do everything, except that
|
|
|
1133 ;; rms doesn't want it.
|
|
|
1134 (setq te-process (start-subprocess "terminal-emulator"
|
|
|
1135 program args
|
|
|
1136 'channel-type 'terminal
|
|
|
1137 'filter 'te-filter
|
|
|
1138 'buffer (current-buffer)
|
|
|
1139 'sentinel 'te-sentinel
|
|
|
1140 'modify-environment
|
|
|
1141 (list (cons "TERM" "emacs-virtual")
|
|
|
1142 (cons "TERMCAP" termcap))))
|
|
|
1143 ;; so instead we resort to this...
|
|
|
1144 (setq te-process
|
|
|
1145 (let ((process-environment
|
|
|
1146 (cons "TERM=emacs-virtual"
|
|
|
1147 (cons (concat "TERMCAP=" termcap)
|
|
|
1148 process-environment))))
|
|
|
1149 (start-process "terminal-emulator"
|
|
|
1150 (current-buffer)
|
|
|
1151 "/bin/sh" "-c"
|
|
|
1152 ;; Yuck!!! Start a shell to set some
|
|
|
1153 ;; terminal control characteristics.
|
|
|
1154 ;; Then exec the program we wanted.
|
|
|
1155 (format "%s; exec %s"
|
|
|
1156 te-stty-string
|
|
|
1157 (mapconcat 'te-quote-arg-for-sh
|
|
|
1158 (cons program args)
|
|
|
1159 " ")))))
|
|
|
1160 (set-process-filter te-process 'te-filter)
|
|
|
1161 (set-process-sentinel te-process 'te-sentinel)))
|
|
|
1162 (error (fundamental-mode)
|
|
|
1163 (signal (car err) (cdr err))))
|
|
|
1164 ;; sigh
|
|
|
1165 (setq inhibit-quit t) ;sport death
|
|
|
1166 (use-local-map terminal-map)
|
|
|
1167 (run-hooks 'terminal-mode-hook)
|
|
|
1168 (message "Entering emacs terminal-emulator... Type %s %s for help"
|
|
|
1169 (single-key-description terminal-escape-char)
|
|
|
1170 (mapconcat 'single-key-description
|
|
|
1171 (where-is-internal 'te-escape-help
|
|
|
1172 terminal-escape-map
|
|
|
1173 t)
|
|
|
1174 " ")))
|
|
|
1175
|
|
|
1176
|
|
|
1177 (defun te-parse-program-and-args (s)
|
|
|
1178 (cond ((string-match "\\`\\([a-zA-Z0-9-+=_.@/:]+[ \t]*\\)+\\'" s)
|
|
|
1179 (let ((l ()) (p 0))
|
|
|
1180 (while p
|
|
|
1181 (setq l (cons (if (string-match
|
|
|
1182 "\\([a-zA-Z0-9-+=_.@/:]+\\)\\([ \t]+\\)*"
|
|
|
1183 s p)
|
|
|
1184 (prog1 (substring s p (match-end 1))
|
|
|
1185 (setq p (match-end 0))
|
|
|
1186 (if (eq p (length s)) (setq p nil)))
|
|
|
1187 (prog1 (substring s p)
|
|
|
1188 (setq p nil)))
|
|
|
1189 l)))
|
|
|
1190 (setq l (nreverse l))
|
|
|
1191 (list (car l) (cdr l))))
|
|
|
1192 ((and (string-match "[ \t]" s) (not (file-exists-p s)))
|
|
|
1193 (list shell-file-name (list "-c" (concat "exec " s))))
|
|
|
1194 (t (list s ()))))
|
|
|
1195
|
|
|
1196 (put 'terminal-mode 'mode-class 'special)
|
|
|
1197 ;; This is only separated out from function terminal-emulator
|
|
|
1198 ;; to keep the latter a little more managable.
|
|
|
1199 (defun terminal-mode ()
|
|
|
1200 "Set up variables for use f the terminal-emualtor.
|
|
|
1201 One should not call this -- it is an internal function
|
|
|
1202 of the terminal-emulator"
|
|
|
1203 (kill-all-local-variables)
|
|
|
1204 (buffer-disable-undo (current-buffer))
|
|
|
1205 (setq major-mode 'terminal-mode)
|
|
|
1206 (setq mode-name "terminal")
|
|
|
1207 ; (make-local-variable 'Helper-return-blurb)
|
|
|
1208 ; (setq Helper-return-blurb "return to terminal simulator")
|
|
|
1209 (setq mode-line-process '(": %s"))
|
|
|
1210 (setq buffer-read-only t)
|
|
|
1211 (setq truncate-lines t)
|
|
|
1212 (make-local-variable 'terminal-escape-char)
|
|
|
1213 (setq terminal-escape-char (default-value 'terminal-escape-char))
|
|
|
1214 (make-local-variable 'terminal-scrolling)
|
|
|
1215 (setq terminal-scrolling (default-value 'terminal-scrolling))
|
|
|
1216 (make-local-variable 'terminal-more-processing)
|
|
|
1217 (setq terminal-more-processing (default-value 'terminal-more-processing))
|
|
|
1218 (make-local-variable 'terminal-redisplay-interval)
|
|
|
1219 (setq terminal-redisplay-interval (default-value 'terminal-redisplay-interval))
|
|
|
1220 (make-local-variable 'te-width)
|
|
|
1221 (make-local-variable 'te-height)
|
|
|
1222 (make-local-variable 'te-process)
|
|
|
1223 (make-local-variable 'te-pending-output)
|
|
|
1224 (setq te-pending-output (list 0))
|
|
|
1225 (make-local-variable 'te-saved-point)
|
|
|
1226 (setq te-saved-point (point-min))
|
|
|
1227 (make-local-variable 'te-pending-output-info) ;for the mode line
|
|
|
1228 (setq te-pending-output-info "")
|
|
|
1229 (make-local-variable 'inhibit-quit)
|
|
|
1230 ;(setq inhibit-quit t)
|
|
|
1231 (make-local-variable 'te-log-buffer)
|
|
|
1232 (setq te-log-buffer nil)
|
|
|
1233 (make-local-variable 'te-more-count)
|
|
|
1234 (setq te-more-count -1)
|
|
|
1235 (make-local-variable 'te-redisplay-count)
|
|
|
1236 (setq te-redisplay-count terminal-redisplay-interval)
|
|
|
1237 (make-local-variable 'te-current-face)
|
|
|
1238 (setq te-current-face 'terminal-default)
|
|
|
1239 (make-local-variable 'te-current-attributes)
|
|
|
1240 (setq te-current-attributes (list (cons 'standout nil)
|
|
|
1241 (cons 'underline nil)))
|
|
|
1242 ;(use-local-map terminal-mode-map)
|
|
|
1243 ;; terminal-mode-hook is called above in function terminal-emulator
|
|
|
1244 (make-local-variable 'meta-prefix-char)
|
|
|
1245 (setq meta-prefix-char -1) ;death to ASCII lossage
|
|
|
1246 )
|
|
|
1247
|
|
|
1248 ;;;; what a complete loss
|
|
|
1249
|
|
|
1250 (defun te-quote-arg-for-sh (fuckme)
|
|
|
1251 (cond ((string-match "\\`[a-zA-Z0-9-+=_.@/:]+\\'"
|
|
|
1252 fuckme)
|
|
|
1253 fuckme)
|
|
|
1254 ((not (string-match "[$]" fuckme))
|
|
|
1255 ;; "[\"\\]" are special to sh and the lisp reader in the same way
|
|
|
1256 (prin1-to-string fuckme))
|
|
|
1257 (t
|
|
|
1258 (let ((harder "")
|
|
|
1259 (cretin 0)
|
|
|
1260 (stupid 0))
|
|
|
1261 (while (cond ((>= cretin (length fuckme))
|
|
|
1262 nil)
|
|
|
1263 ;; this is the set of chars magic with "..." in `sh'
|
|
|
1264 ((setq stupid (string-match "[\"\\$]"
|
|
|
1265 fuckme cretin))
|
|
|
1266 t)
|
|
|
1267 (t (setq harder (concat harder
|
|
|
1268 (substring fuckme cretin)))
|
|
|
1269 nil))
|
|
|
1270 (setq harder (concat harder (substring fuckme cretin stupid)
|
|
|
1271 ;; Can't use ?\\ since `concat'
|
|
|
1272 ;; unfortunately does prin1-to-string
|
|
|
1273 ;; on fixna. Amazing.
|
|
|
1274 "\\"
|
|
|
1275 (substring fuckme
|
|
|
1276 stupid
|
|
|
1277 (1+ stupid)))
|
|
|
1278 cretin (1+ stupid)))
|
|
|
1279 (concat "\"" harder "\"")))))
|
