1.4.0

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+;;; -*-Emacs-Lisp-*-
+;;;
+;;;  $Id$
+;;;  $Author$
+;;;  $Date$
+;;;
+;;; Inferior Ruby Mode - ruby process in a buffer.
+;;;                      adapted from cmuscheme.el
+;;;
+;;; Usage:
+;;;
+;;; (0) check ruby-program-name variable that can run your environment.
+;;;
+;;; (1) modify .emacs to use ruby-mode 
+;;;     for example :
+;;;
+;;;    (autoload 'ruby-mode "ruby-mode"
+;;;      "Mode for editing ruby source files")
+;;;    (setq auto-mode-alist
+;;;          (append '(("\\.rb$" . ruby-mode)) auto-mode-alist))
+;;;    (setq interpreter-mode-alist (append '(("^#!.*ruby" . ruby-mode))
+;;;    				     interpreter-mode-alist))
+;;;    
+;;; (2) set to road inf-ruby and set inf-ruby key definition in ruby-mode.
+;;;
+;;;    (autoload 'run-ruby "inf-ruby"
+;;;      "Run an inferior Ruby process")
+;;;    (autoload 'inf-ruby-keys "inf-ruby"
+;;;      "Set local key defs for inf-ruby in ruby-mode")
+;;;    (add-hook 'ruby-mode-hook
+;;;          '(lambda ()
+;;;             (inf-ruby-keys)
+;;;    ))
+;;;
+;;; HISTORY
+;;; senda -  8 Apr 1998: Created.
+;;;	 $Log$
+;;;	 Revision 1.2  1999/08/13 05:45:18  matz
+;;;	 1.4.0
+;;;
+;;;	 Revision 1.1.1.1.2.1  1999/07/15 07:59:59  matz
+;;;	 990715
+;;;	
+;;;	 Revision 1.1.1.1  1999/01/20 04:59:36  matz
+;;;	 ruby 1.3 cycle
+;;;	
+;;;	 Revision 1.1.2.1  1998/12/16 07:30:36  matz
+;;;	 first public release of 1.1d (pre1.2) series
+;;;	
+;;;	 Revision 1.4  1998/05/20 02:45:58  senda
+;;;	 default program to irb
+;;;
+;;;	 Revision 1.3  1998/04/10 04:11:30  senda
+;;;	 modification by Matsumoto san (1.1b9_09)
+;;;	 remove-in-string defined
+;;;	 global variable :
+;;;	 	 inferior-ruby-first-prompt-pattern
+;;;	       inferior-ruby-prompt-pattern
+;;;	 defined
+;;;
+;;;	 Revision 1.2  1998/04/09 07:53:42  senda
+;;;	 remove M-C-x in inferior-ruby-mode
+;;;
+;;;	 Revision 1.1  1998/04/09 07:28:36  senda
+;;;	 Initial revision
+;;;
+;;;
+
+(require 'comint)
+(require 'ruby-mode)
+
+;;
+;; you may change these variables
+;;
+;(defvar ruby-program-name "rbc --noreadline"
+;  "*Program invoked by the run-ruby command")
+;
+;(defvar inferior-ruby-first-prompt-pattern "^rbc0> *"
+;  "first prompt regex pattern of ruby interpreter.")
+;
+;(defvar inferior-ruby-prompt-pattern "^\\(rbc.[>*\"'] *\\)+"
+;  "prompt regex pattern of ruby interpreter.")
+
+;;;; for irb
+(defvar ruby-program-name "irb --inf-ruby-mode"
+  "*Program invoked by the run-ruby command")
+
+(defvar inferior-ruby-first-prompt-pattern "^irb(.*)[0-9:]+0> *"
+  "first prompt regex pattern of ruby interpreter.")
+
+(defvar inferior-ruby-prompt-pattern "^\\(irb(.*)[0-9:]+[>*\"'] *\\)+"
+  "prompt regex pattern of ruby interpreter.")
+
+;;
+;; mode variables
+;;
+(defvar inferior-ruby-mode-hook nil
+  "*Hook for customising inferior-ruby mode.")
+(defvar inferior-ruby-mode-map nil
+  "*Mode map for inferior-ruby-mode")
+
+(cond ((not inferior-ruby-mode-map)
+       (setq inferior-ruby-mode-map
+	     (copy-keymap comint-mode-map))
+;       (define-key inferior-ruby-mode-map "\M-\C-x" ;gnu convention
+;	           'ruby-send-definition)
+;       (define-key inferior-ruby-mode-map "\C-x\C-e" 'ruby-send-last-sexp)
+       (define-key inferior-ruby-mode-map "\C-c\C-l" 'ruby-load-file)
+))
+
+(defun inf-ruby-keys ()
+  "Set local key defs for inf-ruby in ruby-mode"
+  (define-key ruby-mode-map "\M-\C-x" 'ruby-send-definition)
+;  (define-key ruby-mode-map "\C-x\C-e" 'ruby-send-last-sexp)
+  (define-key ruby-mode-map "\C-c\C-e" 'ruby-send-definition)
+  (define-key ruby-mode-map "\C-c\M-e" 'ruby-send-definition-and-go)
+  (define-key ruby-mode-map "\C-c\C-r" 'ruby-send-region)
+  (define-key ruby-mode-map "\C-c\M-r" 'ruby-send-region-and-go)
+  (define-key ruby-mode-map "\C-c\C-z" 'switch-to-ruby)
+  (define-key ruby-mode-map "\C-c\C-l" 'ruby-load-file)
+  (define-key ruby-mode-map "\C-c\C-s" 'run-ruby)
+)
+
+(defvar ruby-buffer nil "current ruby (actually irb) process buffer.")
+
+(defun inferior-ruby-mode ()
+  "Major mode for interacting with an inferior ruby (irb) process.
+
+The following commands are available:
+\\{inferior-ruby-mode-map}
+
+A ruby process can be fired up with M-x run-ruby.
+
+Customisation: Entry to this mode runs the hooks on comint-mode-hook and
+inferior-ruby-mode-hook (in that order).
+
+You can send text to the inferior ruby process from other buffers containing
+Ruby source.
+    switch-to-ruby switches the current buffer to the ruby process buffer.
+    ruby-send-definition sends the current definition to the ruby process.
+    ruby-send-region sends the current region to the ruby process.
+
+    ruby-send-definition-and-go, ruby-send-region-and-go,
+        switch to the ruby process buffer after sending their text.
+For information on running multiple processes in multiple buffers, see
+documentation for variable ruby-buffer.
+
+Commands:
+Return after the end of the process' output sends the text from the 
+    end of process to point.
+Return before the end of the process' output copies the sexp ending at point
+    to the end of the process' output, and sends it.
+Delete converts tabs to spaces as it moves back.
+Tab indents for ruby; with argument, shifts rest
+    of expression rigidly with the current line.
+C-M-q does Tab on each line starting within following expression.
+Paragraphs are separated only by blank lines.  # start comments.
+If you accidentally suspend your process, use \\[comint-continue-subjob]
+to continue it."
+  (interactive)
+  (comint-mode)
+  ;; Customise in inferior-ruby-mode-hook
+  ;(setq comint-prompt-regexp "^[^>\n]*>+ *")
+  (setq comint-prompt-regexp inferior-ruby-prompt-pattern)
+  ;;(scheme-mode-variables)
+  (ruby-mode-variables)
+  (setq major-mode 'inferior-ruby-mode)
+  (setq mode-name "Inferior Ruby")
+  (setq mode-line-process '(":%s"))
+  (use-local-map inferior-ruby-mode-map)
+  (setq comint-input-filter (function ruby-input-filter))
+  (setq comint-get-old-input (function ruby-get-old-input))
+  (run-hooks 'inferior-ruby-mode-hook))
+
+(defvar inferior-ruby-filter-regexp "\\`\\s *\\S ?\\S ?\\s *\\'"
+  "*Input matching this regexp are not saved on the history list.
+Defaults to a regexp ignoring all inputs of 0, 1, or 2 letters.")
+
+(defun ruby-input-filter (str)
+  "Don't save anything matching inferior-ruby-filter-regexp"
+  (not (string-match inferior-ruby-filter-regexp str)))
+
+;; adapted from replace-in-string in XEmacs (subr.el)
+(defun remove-in-string (str regexp)
+  "Remove all matches in STR for REGEXP and returns the new string."
+  (let ((rtn-str "") (start 0) match prev-start)
+    (while (setq match (string-match regexp str start))
+      (setq prev-start start
+	    start (match-end 0)
+	    rtn-str (concat rtn-str (substring str prev-start match))))
+    (concat rtn-str (substring str start))))
+
+(defun ruby-get-old-input ()
+  "Snarf the sexp ending at point"
+  (save-excursion
+    (let ((end (point)))
+      (re-search-backward inferior-ruby-first-prompt-pattern)
+      (remove-in-string (buffer-substring (point) end)
+			inferior-ruby-prompt-pattern)
+      )))
+
+(defun ruby-args-to-list (string)
+  (let ((where (string-match "[ \t]" string)))
+    (cond ((null where) (list string))
+	  ((not (= where 0))
+	   (cons (substring string 0 where)
+		 (ruby-args-to-list (substring string (+ 1 where)
+						 (length string)))))
+	  (t (let ((pos (string-match "[^ \t]" string)))
+	       (if (null pos)
+		   nil
+		 (ruby-args-to-list (substring string pos
+						 (length string)))))))))
+
+(defun run-ruby (cmd)
+  "Run an inferior Ruby process, input and output via buffer *ruby*.
+If there is a process already running in `*ruby*', switch to that buffer.
+With argument, allows you to edit the command line (default is value
+of `ruby-program-name').  Runs the hooks `inferior-ruby-mode-hook'
+\(after the `comint-mode-hook' is run).
+\(Type \\[describe-mode] in the process buffer for a list of commands.)"
+
+  (interactive (list (if current-prefix-arg
+			 (read-string "Run Ruby: " ruby-program-name)
+			 ruby-program-name)))
+  (if (not (comint-check-proc "*ruby*"))
+      (let ((cmdlist (ruby-args-to-list cmd)))
+	(set-buffer (apply 'make-comint "ruby" (car cmdlist)
+			   nil (cdr cmdlist)))
+	(inferior-ruby-mode)))
+  (setq ruby-program-name cmd)
+  (setq ruby-buffer "*ruby*")
+  (pop-to-buffer "*ruby*"))
+
+(defun ruby-send-region (start end)
+  "Send the current region to the inferior Ruby process."
+  (interactive "r")
+  (comint-send-region (ruby-proc) start end)
+  (comint-send-string (ruby-proc) "\n"))
+
+(defun ruby-send-definition ()
+  "Send the current definition to the inferior Ruby process."
+  (interactive)
+  (save-excursion
+    (ruby-end-of-defun)
+    (let ((end (point)))
+      (ruby-beginning-of-defun)
+      (ruby-send-region (point) end))))
+
+;(defun ruby-send-last-sexp ()
+;  "Send the previous sexp to the inferior Ruby process."
+;  (interactive)
+;  (ruby-send-region (save-excursion (backward-sexp) (point)) (point)))
+
+(defun switch-to-ruby (eob-p)
+  "Switch to the ruby process buffer.
+With argument, positions cursor at end of buffer."
+  (interactive "P")
+  (if (get-buffer ruby-buffer)
+      (pop-to-buffer ruby-buffer)
+      (error "No current process buffer. See variable ruby-buffer."))
+  (cond (eob-p
+	 (push-mark)
+	 (goto-char (point-max)))))
+
+(defun ruby-send-region-and-go (start end)
+  "Send the current region to the inferior Ruby process.
+Then switch to the process buffer."
+  (interactive "r")
+  (ruby-send-region start end)
+  (switch-to-ruby t))
+
+(defun ruby-send-definition-and-go ()
+  "Send the current definition to the inferior Ruby. 
+Then switch to the process buffer."
+  (interactive)
+  (ruby-send-definition)
+  (switch-to-ruby t))
+
+(defvar ruby-source-modes '(ruby-mode)
+  "*Used to determine if a buffer contains Ruby source code.
+If it's loaded into a buffer that is in one of these major modes, it's
+considered a ruby source file by ruby-load-file.
+Used by these commands to determine defaults.")
+
+(defvar ruby-prev-l/c-dir/file nil
+  "Caches the last (directory . file) pair.
+Caches the last pair used in the last ruby-load-file command.
+Used for determining the default in the 
+next one.")
+
+(defun ruby-load-file (file-name)
+  "Load a Ruby file into the inferior Ruby process."
+  (interactive (comint-get-source "Load Ruby file: " ruby-prev-l/c-dir/file
+				  ruby-source-modes t)) ; T because LOAD 
+                                                          ; needs an exact name
+  (comint-check-source file-name) ; Check to see if buffer needs saved.
+  (setq ruby-prev-l/c-dir/file (cons (file-name-directory    file-name)
+				       (file-name-nondirectory file-name)))
+  (comint-send-string (ruby-proc) (concat "(load \""
+					    file-name
+					    "\"\)\n")))
+
+(defun ruby-proc ()
+  "Returns the current ruby process. See variable ruby-buffer."
+  (let ((proc (get-buffer-process (if (eq major-mode 'inferior-ruby-mode)
+				      (current-buffer)
+				    ruby-buffer))))
+    (or proc
+	(error "No current process. See variable ruby-buffer"))))
+
+;;; Do the user's customisation...
+
+(defvar inf-ruby-load-hook nil
+  "This hook is run when inf-ruby is loaded in.
+This is a good place to put keybindings.")
+	
+(run-hooks 'inf-ruby-load-hook)
+
+(provide 'inf-ruby)
+
+;;; inf-ruby.el ends here