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1 ;;; octave-inf.el --- running Octave as an inferior Emacs process |
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2 |
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3 ;; Copyright (C) 1997 Free Software Foundation, Inc. |
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4 |
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5 ;; Author: Kurt Hornik <Kurt.Hornik@ci.tuwien.ac.at> |
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6 ;; Author: John Eaton <jwe@bevo.che.wisc.edu> |
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7 ;; Maintainer: Kurt Hornik <Kurt.Hornik@ci.tuwien.ac.at> |
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8 ;; Keywords: languages |
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9 |
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10 ;; This file is part of GNU Emacs. |
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11 |
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12 ;; GNU Emacs is free software; you can redistribute it and/or modify |
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13 ;; it under the terms of the GNU General Public License as published by |
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14 ;; the Free Software Foundation; either version 2, or (at your option) |
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15 ;; any later version. |
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16 |
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17 ;; GNU Emacs is distributed in the hope that it will be useful, |
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18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
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19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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20 ;; GNU General Public License for more details. |
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21 |
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22 ;; You should have received a copy of the GNU General Public License |
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23 ;; along with GNU Emacs; see the file COPYING. If not, write to the |
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24 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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25 ;; Boston, MA 02111-1307, USA. |
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26 |
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27 ;;; Code: |
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28 |
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29 (require 'octave-mod) |
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30 (require 'comint) |
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31 |
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32 (defgroup octave-inferior nil |
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33 "Running Octave as an inferior Emacs process." |
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34 :group 'octave) |
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35 |
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36 (defcustom inferior-octave-program "octave" |
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37 "*Program invoked by `inferior-octave'." |
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38 :type 'string |
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39 :group 'octave-inferior) |
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40 |
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41 (defcustom inferior-octave-prompt |
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42 "\\(^octave\\(-[.0-9]+\\)?\\(:[0-9]+\\)?\\|^debug\\|^\\)>+ " |
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43 "*Regexp to match prompts for the inferior Octave process." |
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44 :type 'regexp |
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45 :group 'octave-inferior) |
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46 |
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47 (defcustom inferior-octave-startup-file nil |
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48 "*Name of the inferior Octave startup file. |
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49 The contents of this file are sent to the inferior Octave process on |
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50 startup." |
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51 :type '(choice (const :tag "None" nil) |
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52 file) |
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53 :group 'octave-inferior) |
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54 |
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55 (defcustom inferior-octave-startup-args nil |
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56 "*List of command line arguments for the inferior Octave process. |
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57 For example, for suppressing the startup message and using `traditional' |
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58 mode, set this to (\"-q\" \"--traditional\")." |
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59 :type '(repeat string) |
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60 :group 'octave-inferior) |
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61 |
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62 (defvar inferior-octave-mode-map nil |
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63 "Keymap used in Inferior Octave mode.") |
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64 (if inferior-octave-mode-map |
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65 () |
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66 (let ((map (copy-keymap comint-mode-map))) |
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67 (define-key map "\t" 'comint-dynamic-complete) |
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68 (define-key map "\M-?" 'comint-dynamic-list-filename-completions) |
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69 (define-key map "\C-c\C-l" 'inferior-octave-dynamic-list-input-ring) |
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70 (define-key map [menu-bar inout list-history] |
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71 '("List Input History" . inferior-octave-dynamic-list-input-ring)) |
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72 (define-key map "\C-c\C-h" 'octave-help) |
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73 (setq inferior-octave-mode-map map))) |
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74 |
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75 (defvar inferior-octave-mode-syntax-table nil |
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76 "Syntax table in use in inferior-octave-mode buffers.") |
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77 (if inferior-octave-mode-syntax-table |
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78 () |
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79 (let ((table (make-syntax-table))) |
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80 (modify-syntax-entry ?\` "w" table) |
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81 (modify-syntax-entry ?\# "<" table) |
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82 (modify-syntax-entry ?\n ">" table) |
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83 (setq inferior-octave-mode-syntax-table table))) |
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84 |
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85 (defcustom inferior-octave-mode-hook nil |
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86 "*Hook to be run when Inferior Octave mode is started." |
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87 :type 'hook |
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88 :group 'octave-inferior) |
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89 |
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90 (defvar inferior-octave-font-lock-keywords |
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91 (list |
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92 (cons inferior-octave-prompt 'font-lock-type-face)) |
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93 ;; Could certainly do more font locking in inferior Octave ... |
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94 "Additional expressions to highlight in Inferior Octave mode.") |
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95 |
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96 (defvar inferior-octave-output-list nil) |
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97 (defvar inferior-octave-output-string nil) |
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98 (defvar inferior-octave-receive-in-progress nil) |
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99 |
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100 (defvar inferior-octave-startup-hook nil) |
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101 |
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102 (defvar inferior-octave-complete-impossible nil |
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103 "Non-nil means that `inferior-octave-complete' is impossible.") |
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104 |
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105 (defvar inferior-octave-dynamic-complete-functions |
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106 '(inferior-octave-complete comint-dynamic-complete-filename) |
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107 "List of functions called to perform completion for inferior Octave. |
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108 This variable is used to initialize `comint-dynamic-complete-functions' |
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109 in the Inferior Octave buffer.") |
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110 |
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111 (defun inferior-octave-mode () |
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112 "Major mode for interacting with an inferior Octave process. |
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113 Runs Octave as a subprocess of Emacs, with Octave I/O through an Emacs |
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114 buffer. |
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115 |
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116 Entry to this mode successively runs the hooks `comint-mode-hook' and |
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117 `inferior-octave-mode-hook'." |
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118 (interactive) |
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119 (comint-mode) |
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120 (setq comint-prompt-regexp inferior-octave-prompt |
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121 major-mode 'inferior-octave-mode |
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122 mode-name "Inferior Octave" |
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123 mode-line-process '(":%s") |
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124 local-abbrev-table octave-abbrev-table) |
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125 (use-local-map inferior-octave-mode-map) |
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126 (set-syntax-table inferior-octave-mode-syntax-table) |
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127 |
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128 (make-local-variable 'comment-start) |
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129 (setq comment-start octave-comment-start) |
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130 (make-local-variable 'comment-end) |
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131 (setq comment-end "") |
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132 (make-local-variable 'comment-column) |
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133 (setq comment-column 32) |
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134 (make-local-variable 'comment-start-skip) |
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135 (setq comment-start-skip octave-comment-start-skip) |
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136 |
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137 (make-local-variable 'font-lock-defaults) |
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138 (setq font-lock-defaults '(inferior-octave-font-lock-keywords nil nil)) |
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139 |
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140 (setq comint-input-ring-file-name |
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141 (or (getenv "OCTAVE_HISTFILE") "~/.octave_hist") |
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142 comint-input-ring-size (or (getenv "OCTAVE_HISTSIZE") 1024) |
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143 comint-input-filter-functions '(inferior-octave-directory-tracker) |
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144 comint-dynamic-complete-functions |
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145 inferior-octave-dynamic-complete-functions) |
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146 (comint-read-input-ring t) |
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147 |
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148 (run-hooks 'inferior-octave-mode-hook)) |
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149 |
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150 ;;;###autoload |
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151 (defun inferior-octave (&optional arg) |
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152 "Run an inferior Octave process, I/O via `inferior-octave-buffer'. |
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153 This buffer is put in Inferior Octave mode. See `inferior-octave-mode'. |
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154 |
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155 Unless ARG is non-nil, switches to this buffer. |
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156 |
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157 The elements of the list `inferior-octave-startup-args' are sent as |
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158 command line arguments to the inferior Octave process on startup. |
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159 |
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160 Additional commands to be executed on startup can be provided either in |
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161 the file specified by `inferior-octave-startup-file' or by the default |
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162 startup file, `~/.emacs-octave'." |
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163 (interactive "P") |
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164 (let ((buffer inferior-octave-buffer)) |
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165 (get-buffer-create buffer) |
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166 (if (comint-check-proc buffer) |
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167 () |
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168 (save-excursion |
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169 (set-buffer buffer) |
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170 (comint-mode) |
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171 (inferior-octave-startup) |
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172 (inferior-octave-mode))) |
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173 (if (not arg) |
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174 (pop-to-buffer buffer)))) |
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175 |
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176 ;;;###autoload |
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177 (defalias 'run-octave 'inferior-octave) |
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178 |
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179 (defun inferior-octave-startup () |
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180 "Start an inferior Octave process." |
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181 (let ((proc (comint-exec-1 |
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182 (substring inferior-octave-buffer 1 -1) |
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183 inferior-octave-buffer |
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184 inferior-octave-program |
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185 (append (list "-i" "--no-line-editing") |
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186 inferior-octave-startup-args)))) |
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187 (set-process-filter proc 'inferior-octave-output-digest) |
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188 (setq comint-ptyp process-connection-type |
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189 inferior-octave-process proc |
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190 inferior-octave-output-list nil |
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191 inferior-octave-output-string nil |
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192 inferior-octave-receive-in-progress t) |
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193 |
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194 ;; This may look complicated ... However, we need to make sure that |
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195 ;; we additional startup code only AFTER Octave is ready (otherwise, |
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196 ;; output may be mixed up). Hence, we need to digest the Octave |
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197 ;; output to see when it issues a prompt. |
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198 (while inferior-octave-receive-in-progress |
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199 (accept-process-output inferior-octave-process)) |
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200 (goto-char (point-max)) |
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201 (set-marker (process-mark proc) (point)) |
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202 (insert-before-markers |
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203 (concat |
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204 (if (not (bobp)) "\n") |
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205 (if inferior-octave-output-list |
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206 (concat (mapconcat |
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207 'identity inferior-octave-output-list "\n") |
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208 "\n")))) |
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209 ;; O.k., now we are ready for the Inferior Octave startup commands. |
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210 (let* (commands |
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211 (program (file-name-nondirectory inferior-octave-program)) |
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212 (file (or inferior-octave-startup-file |
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213 (concat "~/.emacs-" program)))) |
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214 (setq commands |
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215 (list "page_screen_output = 0;\n" |
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216 (if (not (string-equal |
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217 inferior-octave-output-string ">> ")) |
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218 "PS1=\"\\\\s> \";\n") |
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219 (if (file-exists-p file) |
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220 (format "source (\"%s\");\n" file)))) |
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221 (inferior-octave-send-list-and-digest commands)) |
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222 (insert-before-markers |
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223 (concat |
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224 (if inferior-octave-output-list |
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225 (concat (mapconcat |
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226 'identity inferior-octave-output-list "\n") |
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227 "\n")) |
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228 inferior-octave-output-string)) |
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229 ;; Next, we check whether Octave supports `completion_matches' ... |
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230 (inferior-octave-send-list-and-digest |
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231 (list "exist \"completion_matches\"\n")) |
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232 (setq inferior-octave-complete-impossible |
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233 (not (string-match "5$" (car inferior-octave-output-list)))) |
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234 |
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235 ;; And finally, everything is back to normal. |
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236 (set-process-filter proc 'inferior-octave-output-filter) |
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237 (run-hooks 'inferior-octave-startup-hook))) |
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238 |
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239 |
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240 (defun inferior-octave-complete () |
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241 "Perform completion on the Octave symbol preceding point. |
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242 This is implemented using the Octave command `completion_matches' which |
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243 is NOT available with versions of Octave prior to 2.0." |
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244 (interactive) |
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245 (let* ((end (point)) |
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246 (command (save-excursion |
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247 (skip-syntax-backward "w_") |
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248 (and (looking-at comint-prompt-regexp) |
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249 (goto-char (match-end 0))) |
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250 (buffer-substring-no-properties (point) end))) |
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251 (proc (get-buffer-process inferior-octave-buffer)) |
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252 (filter (process-filter proc))) |
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253 (cond (inferior-octave-complete-impossible |
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254 (error (concat |
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255 "Your Octave does not have `completion_matches'. " |
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256 "Please upgrade to version 2.X."))) |
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257 ((string-equal command "") |
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258 (message "Cannot complete an empty string")) |
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259 (t |
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260 (inferior-octave-send-list-and-digest |
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261 (list (concat "completion_matches (\"" command "\");\n"))) |
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262 ;; Sort the list |
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263 (setq inferior-octave-output-list |
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264 (sort inferior-octave-output-list 'string-lessp)) |
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265 ;; Remove duplicates |
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266 (let* ((x inferior-octave-output-list) |
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267 (y (cdr x))) |
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268 (while y |
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269 (if (string-equal (car x) (car y)) |
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270 (setcdr x (setq y (cdr y))) |
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271 (setq x y |
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272 y (cdr y))))) |
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273 ;; And let comint handle the rest |
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274 (comint-dynamic-simple-complete |
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275 command inferior-octave-output-list))))) |
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276 |
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277 (defun inferior-octave-dynamic-list-input-ring () |
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278 "List the buffer's input history in a help buffer" |
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279 ;; We cannot use `comint-dynamic-list-input-ring', because it replaces |
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280 ;; "completion" by "history reference" ... |
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281 (interactive) |
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282 (if (or (not (ring-p comint-input-ring)) |
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283 (ring-empty-p comint-input-ring)) |
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284 (message "No history") |
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285 (let ((history nil) |
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286 (history-buffer " *Input History*") |
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287 (index (1- (ring-length comint-input-ring))) |
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288 (conf (current-window-configuration))) |
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289 ;; We have to build up a list ourselves from the ring vector. |
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290 (while (>= index 0) |
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291 (setq history (cons (ring-ref comint-input-ring index) history) |
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292 index (1- index))) |
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293 ;; Change "completion" to "history reference" |
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294 ;; to make the display accurate. |
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295 (with-output-to-temp-buffer history-buffer |
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296 (display-completion-list history) |
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297 (set-buffer history-buffer)) |
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298 (message "Hit space to flush") |
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299 (let ((ch (read-event))) |
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300 (if (eq ch ?\ ) |
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301 (set-window-configuration conf) |
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302 (setq unread-command-events (list ch))))))) |
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303 |
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304 (defun inferior-octave-strip-ctrl-g (string) |
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305 "Strip leading `^G' character. |
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306 If STRING starts with a `^G', ring the bell and strip it." |
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307 (if (string-match "^\a" string) |
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308 (progn |
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309 (ding) |
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310 (setq string (substring string 1)))) |
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311 string) |
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312 |
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313 (defun inferior-octave-output-filter (proc string) |
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314 "Standard output filter for the inferior Octave process. |
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315 Ring Emacs bell if process output starts with an ASCII bell, and pass |
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316 the rest to `comint-output-filter'." |
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317 (comint-output-filter proc (inferior-octave-strip-ctrl-g string))) |
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318 |
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319 (defun inferior-octave-output-digest (proc string) |
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320 "Special output filter for the inferior Octave process. |
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321 Save all output between newlines into `inferior-octave-output-list', and |
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322 the rest to `inferior-octave-output-string'." |
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323 (setq string (concat inferior-octave-output-string string)) |
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324 (while (string-match "\n" string) |
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325 (setq inferior-octave-output-list |
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326 (append inferior-octave-output-list |
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327 (list (substring string 0 (match-beginning 0)))) |
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328 string (substring string (match-end 0)))) |
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329 (if (string-match inferior-octave-prompt string) |
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330 (setq inferior-octave-receive-in-progress nil)) |
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331 (setq inferior-octave-output-string string)) |
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332 |
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333 (defun inferior-octave-send-list-and-digest (list) |
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334 "Send LIST to the inferior Octave process and digest the output. |
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335 The elements of LIST have to be strings and are sent one by one. All |
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336 output is passed to the filter `inferior-octave-output-digest'." |
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337 (let* ((proc inferior-octave-process) |
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338 (filter (process-filter proc)) |
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339 string) |
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340 (set-process-filter proc 'inferior-octave-output-digest) |
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341 (setq inferior-octave-output-list nil) |
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342 (unwind-protect |
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343 (while (setq string (car list)) |
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344 (setq inferior-octave-output-string nil |
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345 inferior-octave-receive-in-progress t) |
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346 (comint-send-string proc string) |
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347 (while inferior-octave-receive-in-progress |
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348 (accept-process-output proc)) |
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349 (setq list (cdr list))) |
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350 (set-process-filter proc filter)))) |
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351 |
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352 (defun inferior-octave-directory-tracker (string) |
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353 "Tracks `cd' commands issued to the inferior Octave process. |
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354 Use \\[inferior-octave-resync-dirs] to resync if Emacs gets confused." |
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355 (cond |
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356 ((string-match "^[ \t]*cd[ \t;]*$" string) |
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357 (cd "~")) |
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358 ((string-match "^[ \t]*cd[ \t]+\\([^ \t\n;]*\\)[ \t\n;]*" string) |
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359 (cd (substring string (match-beginning 1) (match-end 1)))))) |
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360 |
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361 (defun inferior-octave-resync-dirs () |
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362 "Resync the buffer's idea of the current directory. |
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363 This command queries the inferior Octave process about its current |
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364 directory and makes this the current buffer's default directory." |
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365 (interactive) |
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366 (inferior-octave-send-list-and-digest '("pwd\n")) |
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367 (cd (car inferior-octave-output-list))) |
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368 |
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369 ;;; provide ourself |
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370 |
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371 (provide 'octave-inf) |
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372 |
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373 ;;; octave-inf.el ends here |
