--- /dev/null
+/* The console object.
+ Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc.
+ Copyright (C) 1996 Ben Wing.
+
+This file is part of XEmacs.
+
+XEmacs is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version.
+
+XEmacs is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with XEmacs; see the file COPYING. If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+/* Synched up with: Not in FSF. */
+
+/* Written by Ben Wing. */
+
+#include <config.h>
+#include "lisp.h"
+
+#include "buffer.h"
+#include "console-tty.h"
+#include "events.h"
+#include "frame.h"
+#include "redisplay.h"
+#include "sysdep.h"
+#include "window.h"
+
+Lisp_Object Vconsole_list, Vselected_console;
+
+Lisp_Object Vcreate_console_hook, Vdelete_console_hook;
+
+Lisp_Object Qconsolep, Qconsole_live_p;
+Lisp_Object Qcreate_console_hook;
+Lisp_Object Qdelete_console_hook;
+
+Lisp_Object Qsuspend_hook;
+Lisp_Object Qsuspend_resume_hook;
+
+/* This structure holds the default values of the console-local
+ variables defined with DEFVAR_CONSOLE_LOCAL, that have special
+ slots in each console. The default value occupies the same slot
+ in this structure as an individual console's value occupies in
+ that console. Setting the default value also goes through the
+ list of consoles and stores into each console that does not say
+ it has a local value. */
+Lisp_Object Vconsole_defaults;
+
+/* This structure marks which slots in a console have corresponding
+ default values in console_defaults.
+ Each such slot has a nonzero value in this structure.
+ The value has only one nonzero bit.
+
+ When a console has its own local value for a slot,
+ the bit for that slot (found in the same slot in this structure)
+ is turned on in the console's local_var_flags slot.
+
+ If a slot in this structure is 0, then there is a DEFVAR_CONSOLE_LOCAL
+ for the slot, but there is no default value for it; the corresponding
+ slot in console_defaults is not used except to initialize newly-created
+ consoles.
+
+ If a slot is -1, then there is a DEFVAR_CONSOLE_LOCAL for it
+ as well as a default value which is used to initialize newly-created
+ consoles and as a reset-value when local-vars are killed.
+
+ If a slot is -2, there is no DEFVAR_CONSOLE_LOCAL for it.
+ (The slot is always local, but there's no lisp variable for it.)
+ The default value is only used to initialize newly-creation consoles.
+
+ If a slot is -3, then there is no DEFVAR_CONSOLE_LOCAL for it but
+ there is a default which is used to initialize newly-creation
+ consoles and as a reset-value when local-vars are killed.
+
+
+ */
+struct console console_local_flags;
+
+/* This structure holds the names of symbols whose values may be
+ console-local. It is indexed and accessed in the same way as the above. */
+static Lisp_Object Vconsole_local_symbols;
+
+DEFINE_CONSOLE_TYPE (dead);
+
+Lisp_Object Vconsole_type_list;
+
+console_type_entry_dynarr *the_console_type_entry_dynarr;
+
+\f
+static Lisp_Object
+mark_console (Lisp_Object obj, void (*markobj) (Lisp_Object))
+{
+ struct console *con = XCONSOLE (obj);
+
+#define MARKED_SLOT(x) ((markobj) (con->x));
+#include "conslots.h"
+#undef MARKED_SLOT
+
+ /* Can be zero for Vconsole_defaults, Vconsole_local_symbols */
+ if (con->conmeths)
+ {
+ ((markobj) (con->conmeths->symbol));
+ MAYBE_CONMETH (con, mark_console, (con, markobj));
+ }
+
+ return Qnil;
+}
+
+static void
+print_console (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
+{
+ struct console *con = XCONSOLE (obj);
+ char buf[256];
+
+ if (print_readably)
+ error ("printing unreadable object #<console %s 0x%x>",
+ XSTRING_DATA (con->name), con->header.uid);
+
+ sprintf (buf, "#<%s-console", !CONSOLE_LIVE_P (con) ? "dead" :
+ CONSOLE_TYPE_NAME (con));
+ write_c_string (buf, printcharfun);
+ if (CONSOLE_LIVE_P (con))
+ {
+ write_c_string (" on ", printcharfun);
+ print_internal (CONSOLE_CONNECTION (con), printcharfun, 1);
+ }
+ sprintf (buf, " 0x%x>", con->header.uid);
+ write_c_string (buf, printcharfun);
+}
+
+DEFINE_LRECORD_IMPLEMENTATION ("console", console,
+ mark_console, print_console, 0, 0, 0,
+ struct console);
+\f
+static struct console *
+allocate_console (void)
+{
+ Lisp_Object console;
+ struct console *con = alloc_lcrecord_type (struct console, lrecord_console);
+ struct gcpro gcpro1;
+
+ copy_lcrecord (con, XCONSOLE (Vconsole_defaults));
+
+ XSETCONSOLE (console, con);
+ GCPRO1 (console);
+
+ con->quit_char = 7; /* C-g */
+ con->command_builder = allocate_command_builder (console);
+ con->function_key_map = Fmake_sparse_keymap (Qnil);
+
+ UNGCPRO;
+ return con;
+}
+
+struct console *
+decode_console (Lisp_Object console)
+{
+ if (NILP (console))
+ console = Fselected_console ();
+ /* quietly accept devices and frames for the console arg */
+ if (DEVICEP (console) || FRAMEP (console))
+ console = DEVICE_CONSOLE (decode_device (console));
+ CHECK_LIVE_CONSOLE (console);
+ return XCONSOLE (console);
+}
+
+
+struct console_methods *
+decode_console_type (Lisp_Object type, Error_behavior errb)
+{
+ int i;
+
+ for (i = 0; i < Dynarr_length (the_console_type_entry_dynarr); i++)
+ if (EQ (type, Dynarr_at (the_console_type_entry_dynarr, i).symbol))
+ return Dynarr_at (the_console_type_entry_dynarr, i).meths;
+
+ maybe_signal_simple_error ("Invalid console type", type, Qconsole, errb);
+
+ return 0;
+}
+
+int
+valid_console_type_p (Lisp_Object type)
+{
+ return decode_console_type (type, ERROR_ME_NOT) != 0;
+}
+
+DEFUN ("valid-console-type-p", Fvalid_console_type_p, 1, 1, 0, /*
+Given a CONSOLE-TYPE, return t if it is valid.
+Valid types are 'x, 'tty, and 'stream.
+*/
+ (console_type))
+{
+ return valid_console_type_p (console_type) ? Qt : Qnil;
+}
+
+DEFUN ("console-type-list", Fconsole_type_list, 0, 0, 0, /*
+Return a list of valid console types.
+*/
+ ())
+{
+ return Fcopy_sequence (Vconsole_type_list);
+}
+
+DEFUN ("cdfw-console", Fcdfw_console, 1, 1, 0, /*
+Given a console, device, frame, or window, return the associated console.
+Return nil otherwise.
+*/
+ (obj))
+{
+ return CDFW_CONSOLE (obj);
+}
+
+\f
+DEFUN ("selected-console", Fselected_console, 0, 0, 0, /*
+Return the console which is currently active.
+*/
+ ())
+{
+ return Vselected_console;
+}
+
+/* Called from selected_device_1(), called from selected_frame_1(),
+ called from Fselect_window() */
+void
+select_console_1 (Lisp_Object console)
+{
+ /* perhaps this should do something more complicated */
+ Vselected_console = console;
+
+ /* #### Schedule this to be removed in 19.14 */
+#ifdef HAVE_X_WINDOWS
+ if (CONSOLE_X_P (XCONSOLE (console)))
+ Vwindow_system = Qx;
+ else
+#endif
+#ifdef HAVE_MS_WINDOWS
+ if (CONSOLE_MSWINDOWS_P (XCONSOLE (console)))
+ Vwindow_system = Qmswindows;
+ else
+#endif
+ Vwindow_system = Qnil;
+}
+
+DEFUN ("select-console", Fselect_console, 1, 1, 0, /*
+Select the console CONSOLE.
+Subsequent editing commands apply to its selected device, selected frame,
+and selected window. The selection of CONSOLE lasts until the next time
+the user does something to select a different console, or until the next
+time this function is called.
+*/
+ (console))
+{
+ Lisp_Object device;
+
+ CHECK_LIVE_CONSOLE (console);
+
+ device = CONSOLE_SELECTED_DEVICE (XCONSOLE (console));
+ if (!NILP (device))
+ {
+ struct device *d = XDEVICE (device);
+ Lisp_Object frame = DEVICE_SELECTED_FRAME (d);
+ if (!NILP (frame))
+ {
+ struct frame *f = XFRAME(frame);
+ Fselect_window (FRAME_SELECTED_WINDOW (f), Qnil);
+ }
+ else
+ error ("Can't select console with no frames.");
+ }
+ else
+ error ("Can't select a console with no devices");
+ return Qnil;
+}
+
+void
+set_console_last_nonminibuf_frame (struct console *con,
+ Lisp_Object frame)
+{
+ con->_last_nonminibuf_frame = frame;
+}
+
+DEFUN ("consolep", Fconsolep, 1, 1, 0, /*
+Return non-nil if OBJECT is a console.
+*/
+ (object))
+{
+ return CONSOLEP (object) ? Qt : Qnil;
+}
+
+DEFUN ("console-live-p", Fconsole_live_p, 1, 1, 0, /*
+Return non-nil if OBJECT is a console that has not been deleted.
+*/
+ (object))
+{
+ return CONSOLEP (object) && CONSOLE_LIVE_P (XCONSOLE (object)) ? Qt : Qnil;
+}
+
+DEFUN ("console-type", Fconsole_type, 0, 1, 0, /*
+Return the type of the specified console (e.g. `x' or `tty').
+Value is `tty' for a tty console (a character-only terminal),
+`x' for a console that is an X display,
+`mswindows' for a console that is a Windows NT/95/97 connection,
+`pc' for a console that is a direct-write MS-DOS connection (not yet
+ implemented),
+`stream' for a stream console (which acts like a stdio stream), and
+`dead' for a deleted console.
+*/
+ (console))
+{
+ /* don't call decode_console() because we want to allow for dead
+ consoles. */
+ if (NILP (console))
+ console = Fselected_console ();
+ CHECK_CONSOLE (console);
+ return CONSOLE_TYPE (XCONSOLE (console));
+}
+
+DEFUN ("console-name", Fconsole_name, 0, 1, 0, /*
+Return the name of the specified console.
+*/
+ (console))
+{
+ return CONSOLE_NAME (decode_console (console));
+}
+
+DEFUN ("console-connection", Fconsole_connection, 0, 1, 0, /*
+Return the connection of the specified console.
+CONSOLE defaults to the selected console if omitted.
+*/
+ (console))
+{
+ return CONSOLE_CONNECTION (decode_console (console));
+}
+
+Lisp_Object
+make_console (struct console *con)
+{
+ Lisp_Object console;
+ XSETCONSOLE (console, con);
+ return console;
+}
+
+static Lisp_Object
+semi_canonicalize_console_connection (struct console_methods *meths,
+ Lisp_Object name, Error_behavior errb)
+{
+ return CONTYPE_METH_OR_GIVEN (meths, semi_canonicalize_console_connection,
+ (name, errb), name);
+}
+
+static Lisp_Object
+canonicalize_console_connection (struct console_methods *meths,
+ Lisp_Object name, Error_behavior errb)
+{
+ return CONTYPE_METH_OR_GIVEN (meths, canonicalize_console_connection,
+ (name, errb), name);
+}
+
+static Lisp_Object
+find_console_of_type (struct console_methods *meths, Lisp_Object canon)
+{
+ Lisp_Object concons;
+
+ CONSOLE_LOOP (concons)
+ {
+ Lisp_Object console = XCAR (concons);
+
+ if (EQ (CONMETH_TYPE (meths), CONSOLE_TYPE (XCONSOLE (console)))
+ && internal_equal (CONSOLE_CANON_CONNECTION (XCONSOLE (console)),
+ canon, 0))
+ return console;
+ }
+
+ return Qnil;
+}
+
+DEFUN ("find-console", Ffind_console, 1, 2, 0, /*
+Look for an existing console attached to connection CONNECTION.
+Return the console if found; otherwise, return nil.
+
+If TYPE is specified, only return consoles of that type; otherwise,
+return consoles of any type. (It is possible, although unlikely,
+that two consoles of different types could have the same connection
+name; in such a case, the first console found is returned.)
+*/
+ (connection, type))
+{
+ Lisp_Object canon = Qnil;
+ struct gcpro gcpro1;
+
+ GCPRO1 (canon);
+
+ if (!NILP (type))
+ {
+ struct console_methods *conmeths = decode_console_type (type, ERROR_ME);
+ canon = canonicalize_console_connection (conmeths, connection,
+ ERROR_ME_NOT);
+ if (UNBOUNDP (canon))
+ RETURN_UNGCPRO (Qnil);
+
+ RETURN_UNGCPRO (find_console_of_type (conmeths, canon));
+ }
+ else
+ {
+ int i;
+
+ for (i = 0; i < Dynarr_length (the_console_type_entry_dynarr); i++)
+ {
+ struct console_methods *conmeths =
+ Dynarr_at (the_console_type_entry_dynarr, i).meths;
+ canon = canonicalize_console_connection (conmeths, connection,
+ ERROR_ME_NOT);
+ if (!UNBOUNDP (canon))
+ {
+ Lisp_Object console = find_console_of_type (conmeths, canon);
+ if (!NILP (console))
+ RETURN_UNGCPRO (console);
+ }
+ }
+
+ RETURN_UNGCPRO (Qnil);
+ }
+}
+
+DEFUN ("get-console", Fget_console, 1, 2, 0, /*
+Look for an existing console attached to connection CONNECTION.
+Return the console if found; otherwise, signal an error.
+
+If TYPE is specified, only return consoles of that type; otherwise,
+return consoles of any type. (It is possible, although unlikely,
+that two consoles of different types could have the same connection
+name; in such a case, the first console found is returned.)
+*/
+ (connection, type))
+{
+ Lisp_Object console = Ffind_console (connection, type);
+ if (NILP (console))
+ {
+ if (NILP (type))
+ signal_simple_error ("No such console", connection);
+ else
+ signal_simple_error_2 ("No such console", type, connection);
+ }
+ return console;
+}
+
+Lisp_Object
+create_console (Lisp_Object name, Lisp_Object type, Lisp_Object connection,
+ Lisp_Object props)
+{
+ /* This function can GC */
+ struct console *con;
+ Lisp_Object console;
+ struct gcpro gcpro1;
+
+ console = Ffind_console (connection, type);
+ if (!NILP (console))
+ return console;
+
+ con = allocate_console ();
+ XSETCONSOLE (console, con);
+
+ GCPRO1 (console);
+
+ con->conmeths = decode_console_type (type, ERROR_ME);
+
+ CONSOLE_NAME (con) = name;
+ CONSOLE_CONNECTION (con) =
+ semi_canonicalize_console_connection (con->conmeths, connection,
+ ERROR_ME);
+ CONSOLE_CANON_CONNECTION (con) =
+ canonicalize_console_connection (con->conmeths, connection,
+ ERROR_ME);
+
+ MAYBE_CONMETH (con, init_console, (con, props));
+
+ /* Do it this way so that the console list is in order of creation */
+ Vconsole_list = nconc2 (Vconsole_list, Fcons (console, Qnil));
+
+ if (CONMETH (con, initially_selected_for_input, (con)))
+ event_stream_select_console (con);
+
+ UNGCPRO;
+ return console;
+}
+
+void
+add_entry_to_console_type_list (Lisp_Object symbol,
+ struct console_methods *meths)
+{
+ struct console_type_entry entry;
+
+ entry.symbol = symbol;
+ entry.meths = meths;
+ Dynarr_add (the_console_type_entry_dynarr, entry);
+ Vconsole_type_list = Fcons (symbol, Vconsole_type_list);
+}
+
+/* find a console other than the selected one. Prefer non-stream
+ consoles over stream consoles. */
+
+static Lisp_Object
+find_other_console (Lisp_Object console)
+{
+ Lisp_Object concons;
+
+ /* look for a non-stream console */
+ CONSOLE_LOOP (concons)
+ {
+ Lisp_Object con = XCAR (concons);
+ if (!CONSOLE_STREAM_P (XCONSOLE (con))
+ && !EQ (con, console)
+ && !NILP (CONSOLE_SELECTED_DEVICE (XCONSOLE (con)))
+ && !NILP (DEVICE_SELECTED_FRAME
+ (XDEVICE (CONSOLE_SELECTED_DEVICE (XCONSOLE (con))))))
+ break;
+ }
+ if (!NILP (concons))
+ return XCAR (concons);
+
+ /* OK, now look for a stream console */
+ CONSOLE_LOOP (concons)
+ {
+ Lisp_Object con = XCAR (concons);
+ if (!EQ (con, console)
+ && !NILP (CONSOLE_SELECTED_DEVICE (XCONSOLE (con)))
+ && !NILP (DEVICE_SELECTED_FRAME
+ (XDEVICE (CONSOLE_SELECTED_DEVICE (XCONSOLE (con))))))
+ break;
+ }
+ if (!NILP (concons))
+ return XCAR (concons);
+
+ /* Sorry, there ain't none */
+ return Qnil;
+}
+
+static int
+find_nonminibuffer_frame_not_on_console_predicate (Lisp_Object frame,
+ void *closure)
+{
+ Lisp_Object console;
+
+ VOID_TO_LISP (console, closure);
+ if (FRAME_MINIBUF_ONLY_P (XFRAME (frame)))
+ return 0;
+ if (EQ (console, FRAME_CONSOLE (XFRAME (frame))))
+ return 0;
+ return 1;
+}
+
+static Lisp_Object
+find_nonminibuffer_frame_not_on_console (Lisp_Object console)
+{
+ return find_some_frame (find_nonminibuffer_frame_not_on_console_predicate,
+ LISP_TO_VOID (console));
+}
+
+/* Delete console CON.
+
+ If FORCE is non-zero, allow deletion of the only frame.
+
+ If CALLED_FROM_KILL_EMACS is non-zero, then, if
+ deleting the last console, just delete it,
+ instead of calling `save-buffers-kill-emacs'.
+
+ If FROM_IO_ERROR is non-zero, then the console is gone due
+ to an I/O error. This affects what happens if we exit
+ (we do an emergency exit instead of `save-buffers-kill-emacs'.)
+*/
+
+void
+delete_console_internal (struct console *con, int force,
+ int called_from_kill_emacs, int from_io_error)
+{
+ /* This function can GC */
+ Lisp_Object console;
+ struct gcpro gcpro1;
+
+ /* OK to delete an already-deleted console. */
+ if (!CONSOLE_LIVE_P (con))
+ return;
+
+ XSETCONSOLE (console, con);
+ GCPRO1 (console);
+
+ if (!called_from_kill_emacs)
+ {
+ int down_we_go = 0;
+
+ if ((XINT (Flength (Vconsole_list)) == 1)
+ /* if we just created the console, it might not be listed,
+ or something ... */
+ && !NILP (memq_no_quit (console, Vconsole_list)))
+ down_we_go = 1;
+ /* If there aren't any nonminibuffer frames that would
+ be left, then exit. */
+ else if (NILP (find_nonminibuffer_frame_not_on_console (console)))
+ down_we_go = 1;
+
+ if (down_we_go)
+ {
+ if (!force)
+ error ("Attempt to delete the only frame");
+ else if (from_io_error)
+ {
+ /* Mayday mayday! We're going down! */
+ stderr_out (" Autosaving and exiting...\n");
+ Vwindow_system = Qnil; /* let it lie! */
+ preparing_for_armageddon = 1;
+ Fkill_emacs (make_int (70));
+ }
+ else
+ {
+ call0 (Qsave_buffers_kill_emacs);
+ UNGCPRO;
+ /* If we get here, the user said they didn't want
+ to exit, so don't. */
+ return;
+ }
+ }
+ }
+
+ /* Breathe a sigh of relief. We're still alive. */
+
+ {
+ Lisp_Object frmcons, devcons;
+
+ /* First delete all frames without their own minibuffers,
+ to avoid errors coming from attempting to delete a frame
+ that is a surrogate for another frame.
+
+ We don't set "called_from_delete_console" because we want the
+ device to go ahead and get deleted if we delete the last frame
+ on a device. We won't run into trouble here because for any
+ frame without a minibuffer, there has to be another one on
+ the same console with a minibuffer, and we're not deleting that,
+ so delete_console_internal() won't get recursively called.
+
+ WRONG! With surrogate minibuffers this isn't true. Frames
+ with only a minibuffer are not enough to prevent
+ delete_frame_internal from triggering a device deletion. */
+ CONSOLE_FRAME_LOOP_NO_BREAK (frmcons, devcons, con)
+ {
+ struct frame *f = XFRAME (XCAR (frmcons));
+ /* delete_frame_internal() might do anything such as run hooks,
+ so be defensive. */
+ if (FRAME_LIVE_P (f) && !FRAME_HAS_MINIBUF_P (f))
+ delete_frame_internal (f, 1, 1, from_io_error);
+
+ if (!CONSOLE_LIVE_P (con)) /* make sure the delete-*-hook didn't
+ go ahead and delete anything */
+ {
+ UNGCPRO;
+ return;
+ }
+ }
+
+ CONSOLE_DEVICE_LOOP (devcons, con)
+ {
+ struct device *d = XDEVICE (XCAR (devcons));
+ /* delete_device_internal() might do anything such as run hooks,
+ so be defensive. */
+ if (DEVICE_LIVE_P (d))
+ delete_device_internal (d, 1, 1, from_io_error);
+ if (!CONSOLE_LIVE_P (con)) /* make sure the delete-*-hook didn't
+ go ahead and delete anything */
+ {
+ UNGCPRO;
+ return;
+ }
+ }
+ }
+
+ CONSOLE_SELECTED_DEVICE (con) = Qnil;
+
+ /* try to select another console */
+
+ if (EQ (console, Fselected_console ()))
+ {
+ Lisp_Object other_dev = find_other_console (console);
+ if (!NILP (other_dev))
+ Fselect_console (other_dev);
+ else
+ {
+ /* necessary? */
+ Vselected_console = Qnil;
+ Vwindow_system = Qnil;
+ }
+ }
+
+ if (con->input_enabled)
+ event_stream_unselect_console (con);
+
+ MAYBE_CONMETH (con, delete_console, (con));
+
+ Vconsole_list = delq_no_quit (console, Vconsole_list);
+ RESET_CHANGED_SET_FLAGS;
+ con->conmeths = dead_console_methods;
+
+ UNGCPRO;
+}
+
+void
+io_error_delete_console (Lisp_Object console)
+{
+ delete_console_internal (XCONSOLE (console), 1, 0, 1);
+}
+
+DEFUN ("delete-console", Fdelete_console, 1, 2, 0, /*
+Delete CONSOLE, permanently eliminating it from use.
+Normally, you cannot delete the last non-minibuffer-only frame (you must
+use `save-buffers-kill-emacs' or `kill-emacs'). However, if optional
+second argument FORCE is non-nil, you can delete the last frame. (This
+will automatically call `save-buffers-kill-emacs'.)
+*/
+ (console, force))
+{
+ CHECK_CONSOLE (console);
+ delete_console_internal (XCONSOLE (console), !NILP (force), 0, 0);
+ return Qnil;
+}
+
+DEFUN ("console-list", Fconsole_list, 0, 0, 0, /*
+Return a list of all consoles.
+*/
+ ())
+{
+ return Fcopy_sequence (Vconsole_list);
+}
+
+DEFUN ("console-device-list", Fconsole_device_list, 0, 1, 0, /*
+Return a list of all devices on CONSOLE.
+If CONSOLE is nil, the selected console will be used.
+*/
+ (console))
+{
+ return Fcopy_sequence (CONSOLE_DEVICE_LIST (decode_console (console)));
+}
+
+DEFUN ("console-enable-input", Fconsole_enable_input, 1, 1, 0, /*
+Enable input on console CONSOLE.
+*/
+ (console))
+{
+ struct console *con = decode_console (console);
+ if (!con->input_enabled)
+ event_stream_select_console (con);
+ return Qnil;
+}
+
+DEFUN ("console-disable-input", Fconsole_disable_input, 1, 1, 0, /*
+Disable input on console CONSOLE.
+*/
+ (console))
+{
+ struct console *con = decode_console (console);
+ if (con->input_enabled)
+ event_stream_unselect_console (con);
+ return Qnil;
+}
+
+DEFUN ("console-on-window-system-p", Fconsole_on_window_system_p, 0, 1, 0, /*
+Return non-nil if this console is on a window system.
+This generally means that there is support for the mouse, the menubar,
+the toolbar, glyphs, etc.
+*/
+ (console))
+{
+ Lisp_Object type = CONSOLE_TYPE (decode_console (console));
+
+ return !EQ (type, Qtty) && !EQ (type, Qstream) ? Qt : Qnil;
+}
+
+
+\f
+/**********************************************************************/
+/* Miscellaneous low-level functions */
+/**********************************************************************/
+
+static Lisp_Object
+unwind_init_sys_modes (Lisp_Object console)
+{
+ reinit_initial_console ();
+
+ if (!no_redraw_on_reenter &&
+ CONSOLEP (console) &&
+ CONSOLE_LIVE_P (XCONSOLE (console)))
+ {
+ struct frame *f =
+ XFRAME (DEVICE_SELECTED_FRAME
+ (XDEVICE (CONSOLE_SELECTED_DEVICE (XCONSOLE (console)))));
+ MARK_FRAME_CHANGED (f);
+ }
+ return Qnil;
+}
+
+DEFUN ("suspend-emacs", Fsuspend_emacs, 0, 1, "", /*
+Stop Emacs and return to superior process. You can resume later.
+On systems that don't have job control, run a subshell instead.
+
+If optional arg STUFFSTRING is non-nil, its characters are stuffed
+to be read as terminal input by Emacs's superior shell.
+
+Before suspending, run the normal hook `suspend-hook'.
+After resumption run the normal hook `suspend-resume-hook'.
+
+Some operating systems cannot stop the Emacs process and resume it later.
+On such systems, Emacs will start a subshell and wait for it to exit.
+*/
+ (stuffstring))
+{
+ int speccount = specpdl_depth ();
+ struct gcpro gcpro1;
+
+ if (!NILP (stuffstring))
+ CHECK_STRING (stuffstring);
+ GCPRO1 (stuffstring);
+
+ /* There used to be a check that the initial console is TTY.
+ This is bogus. Even checking to see whether any console
+ is a controlling terminal is not correct -- maybe
+ the user used the -t option or something. If we want to
+ suspend, then we suspend. Period. */
+
+ /* Call value of suspend-hook. */
+ run_hook (Qsuspend_hook);
+
+ reset_initial_console ();
+ /* sys_suspend can get an error if it tries to fork a subshell
+ and the system resources aren't available for that. */
+ record_unwind_protect (unwind_init_sys_modes, Vcontrolling_terminal);
+ stuff_buffered_input (stuffstring);
+ sys_suspend ();
+ /* the console is un-reset inside of the unwind-protect. */
+ unbind_to (speccount, Qnil);
+
+#ifdef SIGWINCH
+ /* It is possible that a size change occurred while we were
+ suspended. Assume one did just to be safe. It won't hurt
+ anything if one didn't. */
+ asynch_device_change_pending++;
+#endif
+
+ /* Call value of suspend-resume-hook
+ if it is bound and value is non-nil. */
+ run_hook (Qsuspend_resume_hook);
+
+ UNGCPRO;
+ return Qnil;
+}
+
+/* If STUFFSTRING is a string, stuff its contents as pending terminal input.
+ Then in any case stuff anything Emacs has read ahead and not used. */
+
+void
+stuff_buffered_input (Lisp_Object stuffstring)
+{
+/* stuff_char works only in BSD, versions 4.2 and up. */
+#if defined (BSD)
+ if (!CONSOLEP (Vcontrolling_terminal) ||
+ !CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal)))
+ return;
+
+ if (STRINGP (stuffstring))
+ {
+ Extcount count;
+ Extbyte *p;
+
+ GET_STRING_EXT_DATA_ALLOCA (stuffstring, FORMAT_KEYBOARD, p, count);
+ while (count-- > 0)
+ stuff_char (XCONSOLE (Vcontrolling_terminal), *p++);
+ stuff_char (XCONSOLE (Vcontrolling_terminal), '\n');
+ }
+ /* Anything we have read ahead, put back for the shell to read. */
+# if 0 /* oh, who cares about this silliness */
+ while (kbd_fetch_ptr != kbd_store_ptr)
+ {
+ if (kbd_fetch_ptr == kbd_buffer + KBD_BUFFER_SIZE)
+ kbd_fetch_ptr = kbd_buffer;
+ stuff_char (XCONSOLE (Vcontrolling_terminal), *kbd_fetch_ptr++);
+ }
+# endif
+#endif /* BSD */
+}
+
+DEFUN ("suspend-console", Fsuspend_console, 0, 1, "", /*
+Suspend a console. For tty consoles, it sends a signal to suspend
+the process in charge of the tty, and removes the devices and
+frames of that console from the display.
+
+If optional arg CONSOLE is non-nil, it is the console to be suspended.
+Otherwise it is assumed to be the selected console.
+
+Some operating systems cannot stop processes and resume them later.
+On such systems, who knows what will happen.
+*/
+ (console))
+{
+#ifdef HAVE_TTY
+ struct console *con = decode_console (console);
+
+ if (CONSOLE_TTY_P (con))
+ {
+ /*
+ * hide all the unhidden frames so the display code won't update
+ * them while the console is suspended.
+ */
+ Lisp_Object device = CONSOLE_SELECTED_DEVICE (con);
+ if (!NILP (device))
+ {
+ struct device *d = XDEVICE (device);
+ Lisp_Object frame_list = DEVICE_FRAME_LIST (d);
+ while (CONSP (frame_list))
+ {
+ struct frame *f = XFRAME (XCAR (frame_list));
+ if (FRAME_REPAINT_P (f))
+ f->visible = -1;
+ frame_list = XCDR (frame_list);
+ }
+ }
+ reset_one_console (con);
+ event_stream_unselect_console (con);
+ sys_suspend_process (XINT (Fconsole_tty_controlling_process (console)));
+ }
+#endif /* HAVE_TTY */
+
+ return Qnil;
+}
+
+DEFUN ("resume-console", Fresume_console, 1, 1, "", /*
+Re-initialize a previously suspended console.
+For tty consoles, do stuff to the tty to make it sane again.
+*/
+ (console))
+{
+#ifdef HAVE_TTY
+ struct console *con = decode_console (console);
+
+ if (CONSOLE_TTY_P (con))
+ {
+ /* raise the selected frame */
+ Lisp_Object device = CONSOLE_SELECTED_DEVICE (con);
+ if (!NILP (device))
+ {
+ struct device *d = XDEVICE (device);
+ Lisp_Object frame = DEVICE_SELECTED_FRAME (d);
+ if (!NILP (frame))
+ {
+ /* force the frame to be cleared */
+ SET_FRAME_CLEAR (XFRAME (frame));
+ Fraise_frame (frame);
+ }
+ }
+ init_one_console (con);
+ event_stream_select_console (con);
+#ifdef SIGWINCH
+ /* The same as in Fsuspend_emacs: it is possible that a size
+ change occurred while we were suspended. Assume one did just
+ to be safe. It won't hurt anything if one didn't. */
+ asynch_device_change_pending++;
+#endif
+ }
+#endif /* HAVE_TTY */
+
+ return Qnil;
+}
+
+DEFUN ("set-input-mode", Fset_input_mode, 3, 5, 0, /*
+Set mode of reading keyboard input.
+First arg is ignored, for backward compatibility.
+Second arg FLOW non-nil means use ^S/^Q flow control for output to terminal
+ (no effect except in CBREAK mode).
+Third arg META t means accept 8-bit input (for a Meta key).
+ META nil means ignore the top bit, on the assumption it is parity.
+ Otherwise, accept 8-bit input and don't use the top bit for Meta.
+First three arguments only apply to TTY consoles.
+Optional fourth arg QUIT if non-nil specifies character to use for quitting.
+Optional fifth arg CONSOLE specifies console to make changes to; nil means
+ the selected console.
+See also `current-input-mode'.
+*/
+ (ignored, flow, meta, quit, console))
+{
+ struct console *con = decode_console (console);
+ int meta_key = (!CONSOLE_TTY_P (con) ? 1 :
+ EQ (meta, Qnil) ? 0 :
+ EQ (meta, Qt) ? 1 :
+ 2);
+
+ if (!NILP (quit))
+ {
+ CHECK_CHAR_COERCE_INT (quit);
+ CONSOLE_QUIT_CHAR (con) =
+ ((unsigned int) XCHAR (quit)) & (meta_key ? 0377 : 0177);
+ }
+
+#ifdef HAVE_TTY
+ if (CONSOLE_TTY_P (con))
+ {
+ reset_one_console (con);
+ TTY_FLAGS (con).flow_control = !NILP (flow);
+ TTY_FLAGS (con).meta_key = meta_key;
+ init_one_console (con);
+ }
+#endif
+
+ return Qnil;
+}
+
+DEFUN ("current-input-mode", Fcurrent_input_mode, 0, 1, 0, /*
+Return information about the way Emacs currently reads keyboard input.
+Optional arg CONSOLE specifies console to return information about; nil means
+ the selected console.
+The value is a list of the form (nil FLOW META QUIT), where
+ FLOW is non-nil if Emacs uses ^S/^Q flow control for output to the
+ terminal; this does not apply if Emacs uses interrupt-driven input.
+ META is t if accepting 8-bit input with 8th bit as Meta flag.
+ META nil means ignoring the top bit, on the assumption it is parity.
+ META is neither t nor nil if accepting 8-bit input and using
+ all 8 bits as the character code.
+ QUIT is the character Emacs currently uses to quit.
+FLOW, and META are only meaningful for TTY consoles.
+The elements of this list correspond to the arguments of
+`set-input-mode'.
+*/
+ (console))
+{
+ struct console *con = decode_console (console);
+ Lisp_Object flow, meta, quit;
+
+#ifdef HAVE_TTY
+ flow = CONSOLE_TTY_P (con) && TTY_FLAGS (con).flow_control ? Qt : Qnil;
+ meta = (!CONSOLE_TTY_P (con) ? Qt :
+ TTY_FLAGS (con).meta_key == 1 ? Qt :
+ TTY_FLAGS (con).meta_key == 2 ? Qzero :
+ Qnil);
+#else
+ flow = Qnil;
+ meta = Qt;
+#endif
+ quit = make_char (CONSOLE_QUIT_CHAR (con));
+
+ return list4 (Qnil, flow, meta, quit);
+}
+
+\f
+/************************************************************************/
+/* initialization */
+/************************************************************************/
+
+void
+syms_of_console (void)
+{
+ DEFSUBR (Fvalid_console_type_p);
+ DEFSUBR (Fconsole_type_list);
+ DEFSUBR (Fcdfw_console);
+ DEFSUBR (Fselected_console);
+ DEFSUBR (Fselect_console);
+ DEFSUBR (Fconsolep);
+ DEFSUBR (Fconsole_live_p);
+ DEFSUBR (Fconsole_type);
+ DEFSUBR (Fconsole_name);
+ DEFSUBR (Fconsole_connection);
+ DEFSUBR (Ffind_console);
+ DEFSUBR (Fget_console);
+ DEFSUBR (Fdelete_console);
+ DEFSUBR (Fconsole_list);
+ DEFSUBR (Fconsole_device_list);
+ DEFSUBR (Fconsole_enable_input);
+ DEFSUBR (Fconsole_disable_input);
+ DEFSUBR (Fconsole_on_window_system_p);
+ DEFSUBR (Fsuspend_console);
+ DEFSUBR (Fresume_console);
+
+ DEFSUBR (Fsuspend_emacs);
+ DEFSUBR (Fset_input_mode);
+ DEFSUBR (Fcurrent_input_mode);
+
+ defsymbol (&Qconsolep, "consolep");
+ defsymbol (&Qconsole_live_p, "console-live-p");
+
+ defsymbol (&Qcreate_console_hook, "create-console-hook");
+ defsymbol (&Qdelete_console_hook, "delete-console-hook");
+
+ defsymbol (&Qsuspend_hook, "suspend-hook");
+ defsymbol (&Qsuspend_resume_hook, "suspend-resume-hook");
+}
+
+void
+console_type_create (void)
+{
+ the_console_type_entry_dynarr = Dynarr_new (console_type_entry);
+
+ Vconsole_type_list = Qnil;
+ staticpro (&Vconsole_type_list);
+
+ /* Initialize the dead console type */
+ INITIALIZE_CONSOLE_TYPE (dead, "dead", "console-dead-p");
+
+ /* then reset the console-type lists, because `dead' is not really
+ a valid console type */
+ Dynarr_reset (the_console_type_entry_dynarr);
+ Vconsole_type_list = Qnil;
+}
+
+void
+vars_of_console (void)
+{
+ DEFVAR_LISP ("create-console-hook", &Vcreate_console_hook /*
+Function or functions to call when a console is created.
+One argument, the newly-created console.
+This is called after the first frame has been created, but before
+ calling the `create-device-hook' or `create-frame-hook'.
+Note that in general the console will not be selected.
+*/ );
+ Vcreate_console_hook = Qnil;
+
+ DEFVAR_LISP ("delete-console-hook", &Vdelete_console_hook /*
+Function or functions to call when a console is deleted.
+One argument, the to-be-deleted console.
+*/ );
+ Vdelete_console_hook = Qnil;
+
+ staticpro (&Vconsole_list);
+ Vconsole_list = Qnil;
+ staticpro (&Vselected_console);
+ Vselected_console = Qnil;
+
+#ifdef HAVE_WINDOW_SYSTEM
+ Fprovide (intern ("window-system"));
+#endif
+}
+
+/* DOC is ignored because it is snagged and recorded externally
+ * by make-docfile */
+/* Declaring this stuff as const produces 'Cannot reinitialize' messages
+ from SunPro C's fix-and-continue feature (a way neato feature that
+ makes debugging unbelievably more bearable) */
+#define DEFVAR_CONSOLE_LOCAL(lname, field_name) do { \
+static CONST_IF_NOT_DEBUG struct symbol_value_forward I_hate_C \
+ = { { { symbol_value_forward_lheader_initializer, \
+ (struct lcrecord_header *) &(console_local_flags.field_name), 69 }, \
+ SYMVAL_SELECTED_CONSOLE_FORWARD }, 0 }; \
+ defvar_console_local ((lname), &I_hate_C); \
+} while (0)
+
+#define DEFVAR_CONSOLE_LOCAL_MAGIC(lname, field_name, magicfun) do { \
+static CONST_IF_NOT_DEBUG struct symbol_value_forward I_hate_C \
+ = { { { symbol_value_forward_lheader_initializer, \
+ (struct lcrecord_header *) &(console_local_flags.field_name), 69 }, \
+ SYMVAL_SELECTED_CONSOLE_FORWARD }, magicfun }; \
+ defvar_console_local ((lname), &I_hate_C); \
+} while (0)
+
+#define DEFVAR_CONST_CONSOLE_LOCAL(lname, field_name) do { \
+static CONST_IF_NOT_DEBUG struct symbol_value_forward I_hate_C \
+ = { { { symbol_value_forward_lheader_initializer, \
+ (struct lcrecord_header *) &(console_local_flags.field_name), 69 }, \
+ SYMVAL_CONST_SELECTED_CONSOLE_FORWARD }, 0 }; \
+ defvar_console_local ((lname), &I_hate_C); \
+} while (0)
+
+#define DEFVAR_CONST_CONSOLE_LOCAL_MAGIC(lname, field_name, magicfun) do { \
+static CONST_IF_NOT_DEBUG struct symbol_value_forward I_hate_C \
+ = { { { symbol_value_forward_lheader_initializer, \
+ (struct lcrecord_header *) &(console_local_flags.field_name), 69 }, \
+ SYMVAL_CONST_SELECTED_CONSOLE_FORWARD }, magicfun }; \
+ defvar_console_local ((lname), &I_hate_C); \
+} while (0)
+
+#define DEFVAR_CONSOLE_DEFAULTS(lname, field_name) do { \
+static CONST_IF_NOT_DEBUG struct symbol_value_forward I_hate_C \
+ = { { { symbol_value_forward_lheader_initializer, \
+ (struct lcrecord_header *) &(console_local_flags.field_name), 69 }, \
+ SYMVAL_DEFAULT_CONSOLE_FORWARD }, 0 }; \
+ defvar_mumble ((lname), &I_hate_C, sizeof (I_hate_C)); \
+} while (0)
+
+#define DEFVAR_CONSOLE_DEFAULTS_MAGIC(lname, field_name, magicfun) do { \
+static CONST_IF_NOT_DEBUG struct symbol_value_forward I_hate_C \
+ = { { { symbol_value_forward_lheader_initializer, \
+ (struct lcrecord_header *) &(console_local_flags.field_name), 69 }, \
+ SYMVAL_DEFAULT_CONSOLE_FORWARD }, magicfun }; \
+ defvar_mumble ((lname), &I_hate_C, sizeof (I_hate_C)); \
+} while (0)
+
+static void
+defvar_console_local (CONST char *namestring,
+ CONST struct symbol_value_forward *m)
+{
+ int offset = ((char *)symbol_value_forward_forward (m)
+ - (char *)&console_local_flags);
+
+ defvar_mumble (namestring, m, sizeof (*m));
+
+ *((Lisp_Object *)(offset + (char *)XCONSOLE (Vconsole_local_symbols)))
+ = intern (namestring);
+}
+
+static void
+nuke_all_console_slots (struct console *con, Lisp_Object zap)
+{
+ zero_lcrecord (con);
+
+#define MARKED_SLOT(x) con->x = (zap);
+#include "conslots.h"
+#undef MARKED_SLOT
+}
+
+void
+complex_vars_of_console (void)
+{
+ /* Make sure all markable slots in console_defaults
+ are initialized reasonably, so mark_console won't choke.
+ */
+ struct console *defs = alloc_lcrecord_type (struct console, lrecord_console);
+ struct console *syms = alloc_lcrecord_type (struct console, lrecord_console);
+
+ staticpro (&Vconsole_defaults);
+ staticpro (&Vconsole_local_symbols);
+ XSETCONSOLE (Vconsole_defaults, defs);
+ XSETCONSOLE (Vconsole_local_symbols, syms);
+
+ nuke_all_console_slots (syms, Qnil);
+ nuke_all_console_slots (defs, Qnil);
+
+ /* Set up the non-nil default values of various console slots.
+ Must do these before making the first console.
+ */
+ /* #### Anything needed here? */
+
+ {
+ /* 0 means var is always local. Default used only at creation.
+ * -1 means var is always local. Default used only at reset and
+ * creation.
+ * -2 means there's no lisp variable corresponding to this slot
+ * and the default is only used at creation.
+ * -3 means no Lisp variable. Default used only at reset and creation.
+ * >0 is mask. Var is local if ((console->local_var_flags & mask) != 0)
+ * Otherwise default is used.
+ *
+ * #### We don't currently ever reset console variables, so there
+ * is no current distinction between 0 and -1, and between -2 and -3.
+ */
+ Lisp_Object always_local_resettable = make_int (-1);
+
+#if 0 /* not used */
+ Lisp_Object always_local_no_default = make_int (0);
+ Lisp_Object resettable = make_int (-3);
+#endif
+
+ /* Assign the local-flags to the slots that have default values.
+ The local flag is a bit that is used in the console
+ to say that it has its own local value for the slot.
+ The local flag bits are in the local_var_flags slot of the
+ console. */
+
+ nuke_all_console_slots (&console_local_flags, make_int (-2));
+ console_local_flags.defining_kbd_macro = always_local_resettable;
+ console_local_flags.last_kbd_macro = always_local_resettable;
+ console_local_flags.prefix_arg = always_local_resettable;
+ console_local_flags.default_minibuffer_frame = always_local_resettable;
+ console_local_flags.overriding_terminal_local_map =
+ always_local_resettable;
+#ifdef HAVE_TTY
+ console_local_flags.tty_erase_char = always_local_resettable;
+#endif
+
+ console_local_flags.function_key_map = make_int (1);
+
+ /* #### Warning, 0x4000000 (that's six zeroes) is the largest number
+ currently allowable due to the XINT() handling of this value.
+ With some rearrangement you can get 4 more bits. */
+ }
+
+ DEFVAR_CONSOLE_DEFAULTS ("default-function-key-map", function_key_map /*
+Default value of `function-key-map' for consoles that don't override it.
+This is the same as (default-value 'function-key-map).
+*/ );
+
+ DEFVAR_CONSOLE_LOCAL ("function-key-map", function_key_map /*
+Keymap mapping ASCII function key sequences onto their preferred forms.
+This allows Emacs to recognize function keys sent from ASCII
+terminals at any point in a key sequence.
+
+The `read-key-sequence' function replaces any subsequence bound by
+`function-key-map' with its binding. More precisely, when the active
+keymaps have no binding for the current key sequence but
+`function-key-map' binds a suffix of the sequence to a vector or string,
+`read-key-sequence' replaces the matching suffix with its binding, and
+continues with the new sequence.
+
+The events that come from bindings in `function-key-map' are not
+themselves looked up in `function-key-map'.
+
+For example, suppose `function-key-map' binds `ESC O P' to [f1].
+Typing `ESC O P' to `read-key-sequence' would return
+\[#<keypress-event f1>]. Typing `C-x ESC O P' would return
+\[#<keypress-event control-X> #<keypress-event f1>]. If [f1]
+were a prefix key, typing `ESC O P x' would return
+\[#<keypress-event f1> #<keypress-event x>].
+*/ );
+
+#ifdef HAVE_TTY
+ /* ### Should this somehow go to TTY data? How do we make it
+ accessible from Lisp, then? */
+ DEFVAR_CONSOLE_LOCAL ("tty-erase-char", tty_erase_char /*
+The ERASE character as set by the user with stty.
+When this value cannot be determined or would be meaningless (on non-TTY
+consoles, for example), it is set to nil.
+*/ );
+#endif
+
+ /* While this should be CONST it can't be because some things
+ (i.e. edebug) do manipulate it. */
+ DEFVAR_CONSOLE_LOCAL ("defining-kbd-macro", defining_kbd_macro /*
+Non-nil while a console macro is being defined. Don't set this!
+*/ );
+
+ DEFVAR_CONSOLE_LOCAL ("last-kbd-macro", last_kbd_macro /*
+Last kbd macro defined, as a vector of events; nil if none defined.
+*/ );
+
+ DEFVAR_CONSOLE_LOCAL ("prefix-arg", prefix_arg /*
+The value of the prefix argument for the next editing command.
+It may be a number, or the symbol `-' for just a minus sign as arg,
+or a list whose car is a number for just one or more C-U's
+or nil if no argument has been specified.
+
+You cannot examine this variable to find the argument for this command
+since it has been set to nil by the time you can look.
+Instead, you should use the variable `current-prefix-arg', although
+normally commands can get this prefix argument with (interactive "P").
+*/ );
+
+ DEFVAR_CONSOLE_LOCAL ("default-minibuffer-frame",
+ default_minibuffer_frame /*
+Minibufferless frames use this frame's minibuffer.
+
+Emacs cannot create minibufferless frames unless this is set to an
+appropriate surrogate.
+
+XEmacs consults this variable only when creating minibufferless
+frames; once the frame is created, it sticks with its assigned
+minibuffer, no matter what this variable is set to. This means that
+this variable doesn't necessarily say anything meaningful about the
+current set of frames, or where the minibuffer is currently being
+displayed.
+*/ );
+
+ DEFVAR_CONSOLE_LOCAL ("overriding-terminal-local-map",
+ overriding_terminal_local_map /*
+Keymap that overrides all other local keymaps, for the selected console only.
+If this variable is non-nil, it is used as a keymap instead of the
+buffer's local map, and the minor mode keymaps and text property keymaps.
+*/ );
+
+ /* Check for DEFVAR_CONSOLE_LOCAL without initializing the corresponding
+ slot of console_local_flags and vice-versa. Must be done after all
+ DEFVAR_CONSOLE_LOCAL() calls. */
+#define MARKED_SLOT(slot) \
+ if ((XINT (console_local_flags.slot) != -2 && \
+ XINT (console_local_flags.slot) != -3) \
+ != !(NILP (XCONSOLE (Vconsole_local_symbols)->slot))) \
+ abort ()
+#include "conslots.h"
+#undef MARKED_SLOT
+}
projects / chise / xemacs-chise.git.1 / blobdiff