1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
|
;;; -*- Mode: Emacs-Lisp -*-
;;;
;;; Registration of the default Tooltalk patterns and handlers.
;;;
;;; @(#)tooltalk-init.el 1.8 94/02/22
(defvar tooltalk-eval-pattern
'(category TT_HANDLE
scope TT_SESSION
op "emacs-eval"
callback tooltalk-eval-handler))
(defvar tooltalk-load-file-pattern
'(category TT_HANDLE
scope TT_SESSION
op "emacs-load-file"
args ((TT_IN "file" "string"))
callback tooltalk-load-file-handler))
(defvar tooltalk-make-client-frame-pattern
'(category TT_HANDLE
scope TT_SESSION
op "emacs-make-client-screen"
callback tooltalk-make-client-frame-handler))
(defvar tooltalk-status-pattern
'(category TT_HANDLE
scope TT_SESSION
op "emacs-status"
callback tooltalk-status-handler))
(defvar initial-tooltalk-patterns ())
(defun dispatch-initial-tooltalk-message (m)
(let ((op (get-tooltalk-message-attribute m 'op))
(patterns initial-tooltalk-patterns))
(if (stringp op)
(while patterns
(let ((p (car patterns)))
(if (eq (intern op) (tooltalk-pattern-prop-get p 'opsym))
(let ((callback (tooltalk-pattern-prop-get p 'callback)))
(if callback (funcall callback m p))
(setq patterns '()))
(setq patterns (cdr patterns))))))))
(defun make-initial-tooltalk-pattern (args)
(let ((opcdr (cdr (memq 'op args)))
(cbcdr (cdr (memq 'callback args))))
(if (and (consp opcdr) (consp cbcdr))
(let ((plist (list 'opsym (intern (car opcdr)) 'callback (car cbcdr))))
(make-tooltalk-pattern (append args (list 'plist plist))))
(make-tooltalk-pattern args))))
(defun register-initial-tooltalk-patterns ()
(mapcar #'register-tooltalk-pattern
(setq initial-tooltalk-patterns
(mapcar #'make-initial-tooltalk-pattern
(list tooltalk-eval-pattern
tooltalk-load-file-pattern
tooltalk-make-client-frame-pattern
tooltalk-status-pattern))))
(add-hook 'tooltalk-unprocessed-message-hook 'dispatch-initial-tooltalk-message))
(defun unregister-initial-tooltalk-patterns ()
(mapcar 'destroy-tooltalk-pattern initial-tooltalk-patterns)
(setq initial-tooltalk-patterns ())
(remove-hook 'tooltalk-unprocessed-message-hook 'dispatch-initial-tooltalk-message))
(defun tooltalk:prin1-to-string (form)
"Like prin1-to-string except: if the string contains embedded nulls (unlikely
but possible) then replace each one with \"\\000\"."
(let ((string (prin1-to-string form)))
(let ((parts '())
index)
(while (setq index (string-match "\0" string))
(setq parts
(apply 'list "\\000" (substring string 0 index) parts))
(setq string (substring string (1+ index))))
(if (not parts)
string
(setq parts (apply 'list string parts))
(apply 'concat (nreverse parts))))))
;; Backwards compatibility
(fset 'tooltalk::prin1-to-string-carefully 'tooltalk:prin1-to-string)
(defun tooltalk:read-from-string (str)
"Like read-from-string except: an error is signalled if the entire
string can't be parsed."
(let ((res (read-from-string str)))
(if (< (cdr res) (length str))
(error "Parse of input string ended prematurely."
str))
(car res)))
(defun tooltalk::eval-string (str)
(let ((result (eval (car (read-from-string str)))))
(tooltalk:prin1-to-string result)))
(defun tooltalk-eval-handler (msg pat)
(let ((str (get-tooltalk-message-attribute msg 'arg_val 0))
(result-str nil)
(failp t))
(unwind-protect
(cond
;; Assume That the emacs debugger will handle errors.
;; If the user throws from the debugger to the cleanup
;; form below, failp will remain t.
(debug-on-error
(setq result-str (tooltalk::eval-string str)
failp nil))
;; If an error occurs as a result of evaluating
;; the string or printing the result, then we'll return
;; a string version of error-info.
(t
(condition-case error-info
(setq result-str (tooltalk::eval-string str)
failp nil)
(error
(let ((error-str (tooltalk:prin1-to-string error-info)))
(setq result-str error-str
failp t))))))
;; If we get to this point and result-str is still nil, the
;; user must have thrown out of the debuggger
(let ((reply-type (if failp 'fail 'reply))
(reply-value (or result-str "(debugger exit)")))
(set-tooltalk-message-attribute reply-value msg 'arg_val 0)
(return-tooltalk-message msg reply-type)))))
(defun tooltalk-make-client-frame-handler (m p)
(let ((nargs (get-tooltalk-message-attribute m 'args_count)))
(if (not (= 3 nargs))
(progn
(set-tooltalk-message-attribute "wrong number of arguments" m 'status_string)
(return-tooltalk-message m 'fail))))
;; Note: relying on the fact that arg_ival is returned as a string
(let* ((name (get-tooltalk-message-attribute m 'arg_val 0))
(window (get-tooltalk-message-attribute m 'arg_ival 1))
(args (list (cons 'name name) (cons 'window-id window)))
(frame (make-frame args)))
(set-tooltalk-message-attribute (frame-name frame) m 'arg_val 2)
(return-tooltalk-message m 'reply)))
(defun tooltalk-load-file-handler (m p)
(let ((path (get-tooltalk-message-attribute m 'file)))
(condition-case error-info
(progn
(load-file path)
(return-tooltalk-message m 'reply))
(error
(let ((error-string (tooltalk:prin1-to-string error-info)))
(set-tooltalk-message-attribute error-string m 'status_string)
(return-tooltalk-message m 'fail))))))
(defun tooltalk-status-handler (m p)
(return-tooltalk-message m 'reply))
;; Hack the command-line.
(defun command-line-do-tooltalk (arg)
"Connect to the ToolTalk server."
; (setq command-line-args-left
; (cdr (tooltalk-open-connection (cons (car command-line-args)
; command-line-args-left))))
(if (tooltalk-open-connection)
(register-initial-tooltalk-patterns)
(display-warning 'tooltalk "Warning: unable to connect to a ToolTalk server.")))
(setq command-switch-alist
(append command-switch-alist
'(("-tooltalk" . command-line-do-tooltalk))))
;; Add some selection converters.
(defun xselect-convert-to-ttprocid (selection type value)
(let* ((msg (create-tooltalk-message))
(ttprocid (get-tooltalk-message-attribute msg 'sender)))
(destroy-tooltalk-message msg)
ttprocid
))
(defun xselect-convert-to-ttsession (selection type value)
(let* ((msg (create-tooltalk-message))
(ttsession (get-tooltalk-message-attribute msg 'session)))
(destroy-tooltalk-message msg)
ttsession
))
(if (boundp 'selection-converter-alist)
(setq selection-converter-alist
(append
selection-converter-alist
'((SPRO_PROCID . xselect-convert-to-ttprocid)
(SPRO_SESSION . xselect-convert-to-ttsession)
)))
(setq selection-converter-alist
'((SPRO_PROCID . xselect-convert-to-ttprocid)
(SPRO_SESSION . xselect-convert-to-ttsession))))
|
