1 /* TTY console functions.
2 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois.
3 Copyright (C) 1994, 1995 Free Software Foundation, Inc.
4 Copyright (C) 1996 Ben Wing.
6 This file is part of XEmacs.
8 XEmacs is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by the
10 Free Software Foundation; either version 2, or (at your option) any
13 XEmacs is distributed in the hope that it will be useful, but WITHOUT
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with XEmacs; see the file COPYING. If not, write to
20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
23 /* Synched up with: Not in FSF. */
25 /* Authors: Ben Wing and Chuck Thompson. */
30 #include "console-tty.h"
31 #include "console-stream.h"
35 #include "redisplay.h"
39 #include "file-coding.h"
45 DEFINE_CONSOLE_TYPE (tty);
47 Lisp_Object Qterminal_type;
48 Lisp_Object Qcontrolling_process;
52 allocate_tty_console_struct (struct console *con)
54 /* zero out all slots except the lisp ones ... */
55 CONSOLE_TTY_DATA (con) = xnew_and_zero (struct tty_console);
56 CONSOLE_TTY_DATA (con)->terminal_type = Qnil;
57 CONSOLE_TTY_DATA (con)->instream = Qnil;
58 CONSOLE_TTY_DATA (con)->outstream = Qnil;
62 tty_init_console (struct console *con, Lisp_Object props)
64 Lisp_Object tty = CONSOLE_CONNECTION (con);
65 Lisp_Object terminal_type = Qnil;
66 Lisp_Object controlling_process = Qnil;
67 struct tty_console *tty_con;
68 struct gcpro gcpro1, gcpro2;
70 GCPRO2 (terminal_type, controlling_process);
72 terminal_type = Fplist_get (props, Qterminal_type, Qnil);
73 controlling_process = Fplist_get (props, Qcontrolling_process, Qnil);
75 /* Determine the terminal type */
77 if (!NILP (terminal_type))
78 CHECK_STRING (terminal_type);
81 char *temp_type = getenv ("TERM");
85 error ("Cannot determine terminal type");
88 terminal_type = build_string (temp_type);
91 /* Determine the controlling process */
92 if (!NILP (controlling_process))
93 CHECK_INT (controlling_process);
95 /* Open the specified console */
97 allocate_tty_console_struct (con);
98 tty_con = CONSOLE_TTY_DATA (con);
100 if (internal_equal (tty, Vstdio_str, 0))
102 tty_con->infd = fileno (stdin);
103 tty_con->outfd = fileno (stdout);
104 tty_con->is_stdio = 1;
108 tty_con->infd = tty_con->outfd =
109 open ((char *) XSTRING_DATA (tty), O_RDWR);
110 if (tty_con->infd < 0)
111 error ("Unable to open tty %s", XSTRING_DATA (tty));
112 tty_con->is_stdio = 0;
115 tty_con->instream = make_filedesc_input_stream (tty_con->infd, 0, -1, 0);
116 tty_con->outstream = make_filedesc_output_stream (tty_con->outfd, 0, -1, 0);
119 make_decoding_input_stream (XLSTREAM (tty_con->instream),
120 Fget_coding_system (Vkeyboard_coding_system));
121 Lstream_set_character_mode (XLSTREAM (tty_con->instream));
123 make_encoding_output_stream (XLSTREAM (tty_con->outstream),
124 Fget_coding_system (Vterminal_coding_system));
126 tty_con->terminal_type = terminal_type;
127 tty_con->controlling_process = controlling_process;
130 connect_to_gpm (con);
133 if (NILP (CONSOLE_NAME (con)))
134 CONSOLE_NAME (con) = Ffile_name_nondirectory (tty);
137 int controlling_tty_pg;
140 /* OK, the only sure-fire way I can think of to determine
141 whether a particular TTY is our controlling TTY is to check
142 if it has the same foreground process group as our controlling
143 TTY. This is OK because a process group can never simultaneously
144 be the foreground process group of two TTY's (in that case it
145 would have two controlling TTY's, which is not allowed). */
147 EMACS_GET_TTY_PROCESS_GROUP (tty_con->infd, &tty_pg);
148 cfd = open ("/dev/tty", O_RDWR, 0);
149 EMACS_GET_TTY_PROCESS_GROUP (cfd, &controlling_tty_pg);
151 if (tty_pg == controlling_tty_pg)
153 tty_con->controlling_terminal = 1;
154 XSETCONSOLE (Vcontrolling_terminal, con);
155 munge_tty_process_group ();
158 tty_con->controlling_terminal = 0;
165 tty_mark_console (struct console *con, void (*markobj) (Lisp_Object))
167 struct tty_console *tty_con = CONSOLE_TTY_DATA (con);
168 ((markobj) (tty_con->terminal_type));
169 ((markobj) (tty_con->instream));
170 ((markobj) (tty_con->outstream));
174 tty_initially_selected_for_input (struct console *con)
180 free_tty_console_struct (struct console *con)
182 struct tty_console *tty_con = CONSOLE_TTY_DATA (con);
185 if (tty_con->term_entry_buffer) /* allocated in term_init () */
187 xfree (tty_con->term_entry_buffer);
188 tty_con->term_entry_buffer = NULL;
191 CONSOLE_TTY_DATA (con) = NULL;
196 tty_delete_console (struct console *con)
198 Lstream_close (XLSTREAM (CONSOLE_TTY_DATA (con)->instream));
199 Lstream_close (XLSTREAM (CONSOLE_TTY_DATA (con)->outstream));
200 if (!CONSOLE_TTY_DATA (con)->is_stdio)
201 close (CONSOLE_TTY_DATA (con)->infd);
202 if (CONSOLE_TTY_DATA (con)->controlling_terminal)
204 Vcontrolling_terminal = Qnil;
205 unmunge_tty_process_group ();
207 free_tty_console_struct (con);
211 static struct console *
212 decode_tty_console (Lisp_Object console)
214 XSETCONSOLE (console, decode_console (console));
215 CHECK_TTY_CONSOLE (console);
216 return XCONSOLE (console);
219 DEFUN ("console-tty-terminal-type", Fconsole_tty_terminal_type,
221 Return the terminal type of TTY console CONSOLE.
225 return CONSOLE_TTY_DATA (decode_tty_console (console))->terminal_type;
228 DEFUN ("console-tty-controlling-process", Fconsole_tty_controlling_process,
230 Return the controlling process of tty console CONSOLE.
234 return CONSOLE_TTY_DATA (decode_tty_console (console))->controlling_process;
239 DEFUN ("console-tty-input-coding-system", Fconsole_tty_input_coding_system,
241 Return the input coding system of tty console CONSOLE.
245 return decoding_stream_coding_system
246 (XLSTREAM (CONSOLE_TTY_DATA (decode_tty_console (console))->instream));
249 DEFUN ("set-console-tty-input-coding-system", Fset_console_tty_input_coding_system,
251 Set the input coding system of tty console CONSOLE to CODESYS.
252 CONSOLE defaults to the selected console.
253 CODESYS defaults to the value of `keyboard-coding-system'.
257 set_decoding_stream_coding_system
258 (XLSTREAM (CONSOLE_TTY_DATA (decode_tty_console (console))->instream),
259 Fget_coding_system (NILP (codesys) ? Vkeyboard_coding_system : codesys));
263 DEFUN ("console-tty-output-coding-system", Fconsole_tty_output_coding_system,
265 Return TTY CONSOLE's output coding system.
269 return encoding_stream_coding_system
270 (XLSTREAM (CONSOLE_TTY_DATA (decode_tty_console (console))->outstream));
273 DEFUN ("set-console-tty-output-coding-system", Fset_console_tty_output_coding_system,
275 Set the coding system of tty output of console CONSOLE to CODESYS.
276 CONSOLE defaults to the selected console.
277 CODESYS defaults to the value of `terminal-coding-system'.
281 set_encoding_stream_coding_system
282 (XLSTREAM (CONSOLE_TTY_DATA (decode_tty_console (console))->outstream),
283 Fget_coding_system (NILP (codesys) ? Vterminal_coding_system : codesys));
287 /* ### Move this function to lisp */
288 DEFUN ("set-console-tty-coding-system", Fset_console_tty_coding_system,
290 Set the input and output coding systems of tty console CONSOLE to CODESYS.
291 CONSOLE defaults to the selected console.
292 If CODESYS is nil, the values of `keyboard-coding-system' and
293 `terminal-coding-system' will be used for the input and
294 output coding systems of CONSOLE.
298 Fset_console_tty_input_coding_system (console, codesys);
299 Fset_console_tty_output_coding_system (console, codesys);
306 tty_semi_canonicalize_console_connection (Lisp_Object connection,
309 return stream_semi_canonicalize_console_connection (connection, errb);
313 tty_canonicalize_console_connection (Lisp_Object connection,
316 return stream_canonicalize_console_connection (connection, errb);
320 tty_semi_canonicalize_device_connection (Lisp_Object connection,
323 return stream_semi_canonicalize_console_connection (connection, errb);
327 tty_canonicalize_device_connection (Lisp_Object connection,
330 return stream_canonicalize_console_connection (connection, errb);
334 /************************************************************************/
336 /************************************************************************/
339 syms_of_console_tty (void)
341 DEFSUBR (Fconsole_tty_terminal_type);
342 DEFSUBR (Fconsole_tty_controlling_process);
343 defsymbol (&Qterminal_type, "terminal-type");
344 defsymbol (&Qcontrolling_process, "controlling-process");
346 DEFSUBR (Fconsole_tty_output_coding_system);
347 DEFSUBR (Fset_console_tty_output_coding_system);
348 DEFSUBR (Fconsole_tty_input_coding_system);
349 DEFSUBR (Fset_console_tty_input_coding_system);
350 DEFSUBR (Fset_console_tty_coding_system);
355 console_type_create_tty (void)
357 INITIALIZE_CONSOLE_TYPE (tty, "tty", "console-tty-p");
359 /* console methods */
360 CONSOLE_HAS_METHOD (tty, init_console);
361 CONSOLE_HAS_METHOD (tty, mark_console);
362 CONSOLE_HAS_METHOD (tty, initially_selected_for_input);
363 CONSOLE_HAS_METHOD (tty, delete_console);
364 CONSOLE_HAS_METHOD (tty, canonicalize_console_connection);
365 CONSOLE_HAS_METHOD (tty, canonicalize_device_connection);
366 CONSOLE_HAS_METHOD (tty, semi_canonicalize_console_connection);
367 CONSOLE_HAS_METHOD (tty, semi_canonicalize_device_connection);
371 vars_of_console_tty (void)