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comparison lisp/mule/mule-process.el @ 197:acd284d43ca1 r20-3b25

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date Mon, 13 Aug 2007 10:00:02 +0200
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1 ;;; mule-process.el --- Process functions for XEmacs/mule.
2
3 ;; Copyright (C) 1985-1987, 1993, 1994, 1997 Free Software Foundation, Inc.
4 ;; Copyright (C) 1995 Ben Wing
5 ;; Copyright (C) 1997 MORIOKA Tomohiko
6
7 ;; Author: Ben Wing
8 ;; MORIOKA Tomohiko
9 ;; Maintainer: XEmacs Development Team
10 ;; Keywords: mule, multilingual, coding system, process
11
12 ;; This file is part of XEmacs.
13
14 ;; XEmacs is free software; you can redistribute it and/or modify it
15 ;; under the terms of the GNU General Public License as published by
16 ;; the Free Software Foundation; either version 2, or (at your option)
17 ;; any later version.
18
19 ;; XEmacs is distributed in the hope that it will be useful, but
20 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
21 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 ;; General Public License for more details.
23
24 ;; You should have received a copy of the GNU General Public License
25 ;; along with XEmacs; see the file COPYING. If not, write to the Free
26 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
27 ;; 02111-1307, USA.
28
29 ;;; Code:
30
31 (defvar process-coding-system-alist nil
32 "Alist to decide a coding system to use for a process I/O operation.
33 The format is ((PATTERN . VAL) ...),
34 where PATTERN is a regular expression matching a program name,
35 VAL is a coding system, a cons of coding systems, or a function symbol.
36 If VAL is a coding system, it is used for both decoding what received
37 from the program and encoding what sent to the program.
38 If VAL is a cons of coding systems, the car part is used for decoding,
39 and the cdr part is used for encoding.
40 If VAL is a function symbol, the function must return a coding system
41 or a cons of coding systems which are used as above.")
42
43 (defun call-process (program &optional infile buffer displayp &rest args)
44 "Call PROGRAM synchronously in separate process.
45 The program's input comes from file INFILE (nil means `/dev/null').
46 Insert output in BUFFER before point; t means current buffer;
47 nil for BUFFER means discard it; 0 means discard and don't wait.
48 BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case,
49 REAL-BUFFER says what to do with standard output, as above,
50 while STDERR-FILE says what to do with standard error in the child.
51 STDERR-FILE may be nil (discard standard error output),
52 t (mix it with ordinary output), or a file name string.
53
54 Fourth arg DISPLAYP non-nil means redisplay buffer as output is inserted.
55 Remaining arguments are strings passed as command arguments to PROGRAM.
56
57 If BUFFER is 0, `call-process' returns immediately with value nil.
58 Otherwise it waits for PROGRAM to terminate and returns a numeric exit status
59 or a signal description string.
60 If you quit, the process is killed with SIGINT, or SIGKILL if you
61 quit again."
62 (let* ((coding-system-for-read
63 (or coding-system-for-read
64 (let (ret)
65 (catch 'found
66 (let ((alist process-coding-system-alist)
67 (case-fold-search (eq system-type 'vax-vms)))
68 (while alist
69 (if (string-match (car (car alist)) program)
70 (throw 'found (setq ret (cdr (car alist))))
71 )
72 (setq alist (cdr alist))
73 )))
74 (if (functionp ret)
75 (setq ret (funcall ret 'call-process filename))
76 )
77 (cond ((consp ret) (car ret))
78 ((find-coding-system ret) ret)
79 )
80 ))))
81 (apply 'call-process-internal program infile buffer displayp args)
82 ))
83
84 (defun call-process-region (start end program
85 &optional deletep buffer displayp
86 &rest args)
87 "Send text from START to END to a synchronous process running PROGRAM.
88 Delete the text if fourth arg DELETEP is non-nil.
89
90 Insert output in BUFFER before point; t means current buffer;
91 nil for BUFFER means discard it; 0 means discard and don't wait.
92 BUFFER can also have the form (REAL-BUFFER STDERR-FILE); in that case,
93 REAL-BUFFER says what to do with standard output, as above,
94 while STDERR-FILE says what to do with standard error in the child.
95 STDERR-FILE may be nil (discard standard error output),
96 t (mix it with ordinary output), or a file name string.
97
98 Sixth arg DISPLAYP non-nil means redisplay buffer as output is inserted.
99 Remaining args are passed to PROGRAM at startup as command args.
100
101 If BUFFER is 0, returns immediately with value nil.
102 Otherwise waits for PROGRAM to terminate
103 and returns a numeric exit status or a signal description string.
104 If you quit, the process is first killed with SIGINT, then with SIGKILL if
105 you quit again before the process exits."
106 (let ((temp (cond ((eq system-type 'vax-vms)
107 (make-temp-name "tmp:emacs"))
108 ((or (eq system-type 'ms-dos)
109 (eq system-type 'windows-nt))
110 (make-temp-name
111 (concat (file-name-as-directory
112 (or (getenv "TMP")
113 (getenv "TEMP")
114 ""))
115 "em")))
116 (t
117 (make-temp-name "/tmp/emacs")))))
118 (unwind-protect
119 (let (cs-r cd-w)
120 (let (ret)
121 (catch 'found
122 (let ((alist process-coding-system-alist)
123 (case-fold-search (eq system-type 'vax-vms)))
124 (while alist
125 (if (string-match (car (car alist)) program)
126 (throw 'found (setq ret (cdr (car alist)))))
127 (setq alist (cdr alist))
128 )))
129 (if (functionp ret)
130 (setq ret (funcall ret 'call-process-region filename)))
131 (cond ((consp ret)
132 (setq cs-r (car ret)
133 cs-w (cdr ret)))
134 ((find-coding-system ret)
135 (setq cs-r ret
136 cs-w ret))))
137 (let ((coding-system-for-read
138 (or coding-system-for-read cs-r))
139 (coding-system-for-write
140 (or coding-system-for-write cs-w)))
141 (if (or (eq system-type 'ms-dos)
142 (eq system-type 'windows-nt))
143 (let ((buffer-file-type binary-process-output))
144 (write-region start end temp nil 'silent))
145 (write-region start end temp nil 'silent))
146 (if deletep (delete-region start end))
147 (apply #'call-process program temp buffer displayp args)))
148 (condition-case ()
149 (delete-file temp)
150 (file-error nil)))))
151
152 (defun start-process (name buffer program &rest program-args)
153 "Start a program in a subprocess. Return the process object for it.
154 Args are NAME BUFFER PROGRAM &rest PROGRAM-ARGS
155 NAME is name for process. It is modified if necessary to make it unique.
156 BUFFER is the buffer or (buffer-name) to associate with the process.
157 Process output goes at end of that buffer, unless you specify
158 an output stream or filter function to handle the output.
159 BUFFER may be also nil, meaning that this process is not associated
160 with any buffer
161 Third arg is program file name. It is searched for as in the shell.
162 Remaining arguments are strings to give program as arguments.
163 INCODE and OUTCODE specify the coding-system objects used in input/output
164 from/to the process."
165 (let (cs-r cd-w)
166 (let (ret)
167 (catch 'found
168 (let ((alist process-coding-system-alist)
169 (case-fold-search (eq system-type 'vax-vms)))
170 (while alist
171 (if (string-match (car (car alist)) program)
172 (throw 'found (setq ret (cdr (car alist)))))
173 (setq alist (cdr alist))
174 )))
175 (if (functionp ret)
176 (setq ret (funcall ret 'start-process filename)))
177 (cond ((consp ret)
178 (setq cs-r (car ret)
179 cs-w (cdr ret)))
180 ((find-coding-system ret)
181 (setq cs-r ret
182 cs-w ret))))
183 (let ((coding-system-for-read
184 (or coding-system-for-read cs-r))
185 (coding-system-for-write
186 (or coding-system-for-write cs-w)))
187 (apply 'start-process-internal name buffer program program-args)
188 )))
189
190 (defvar network-coding-system-alist nil
191 "Alist to decide a coding system to use for a network I/O operation.
192 The format is ((PATTERN . VAL) ...),
193 where PATTERN is a regular expression matching a network service name
194 or is a port number to connect to,
195 VAL is a coding system, a cons of coding systems, or a function symbol.
196 If VAL is a coding system, it is used for both decoding what received
197 from the network stream and encoding what sent to the network stream.
198 If VAL is a cons of coding systems, the car part is used for decoding,
199 and the cdr part is used for encoding.
200 If VAL is a function symbol, the function must return a coding system
201 or a cons of coding systems which are used as above.
202
203 See also the function `find-operation-coding-system'.")
204
205 (defun open-network-stream (name buffer host service)
206 "Open a TCP connection for a service to a host.
207 Returns a subprocess-object to represent the connection.
208 Input and output work as for subprocesses; `delete-process' closes it.
209 Args are NAME BUFFER HOST SERVICE.
210 NAME is name for process. It is modified if necessary to make it unique.
211 BUFFER is the buffer (or buffer-name) to associate with the process.
212 Process output goes at end of that buffer, unless you specify
213 an output stream or filter function to handle the output.
214 BUFFER may be also nil, meaning that this process is not associated
215 with any buffer
216 Third arg is name of the host to connect to, or its IP address.
217 Fourth arg SERVICE is name of the service desired, or an integer
218 specifying a port number to connect to."
219 (let (cs-r cd-w)
220 (let (ret)
221 (catch 'found
222 (let ((alist network-coding-system-alist)
223 (case-fold-search (eq system-type 'vax-vms)))
224 (while alist
225 (if (string-match (car (car alist)) program)
226 (throw 'found (setq ret (cdr (car alist)))))
227 (setq alist (cdr alist))
228 )))
229 (if (functionp ret)
230 (setq ret (funcall ret 'open-network-stream filename)))
231 (cond ((consp ret)
232 (setq cs-r (car ret)
233 cs-w (cdr ret)))
234 ((find-coding-system ret)
235 (setq cs-r ret
236 cs-w ret))))
237 (let ((coding-system-for-read
238 (or coding-system-for-read cs-r))
239 (coding-system-for-write
240 (or coding-system-for-write cs-w)))
241 (open-network-stream-internal name buffer host service))))
242
243 ;;; mule-process.el ends here