/* Functions related to terminal devices.
- Copyright (C) 2005-2013 Free Software Foundation, Inc.
+ Copyright (C) 2005-2015 Free Software Foundation, Inc.
This file is part of GNU Emacs.
#include <config.h>
-#define TERMHOOKS_INLINE EXTERN_INLINE
-
#include <stdio.h>
#include "lisp.h"
#include "coding.h"
#include "keyboard.h"
-/* Chain of all terminals currently in use. */
+/* Chain of all terminals currently in use. */
struct terminal *terminal_list;
-/* The first unallocated terminal id. */
+/* The first unallocated terminal id. */
static int next_terminal_id;
-/* The initial terminal device, created by initial_term_init. */
+/* The initial terminal device, created by initial_term_init. */
struct terminal *initial_terminal;
+Lisp_Object Qrun_hook_with_args;
+static Lisp_Object Qterminal_live_p;
+static Lisp_Object Qdelete_terminal_functions;
+
static void delete_initial_terminal (struct terminal *);
/* This setter is used only in this file, so it can be private. */
(*FRAME_TERMINAL (f)->raw_cursor_to_hook) (f, row, col);
}
-/* Erase operations */
+/* Erase operations. */
-/* Clear from cursor to end of frame. */
+/* Clear from cursor to end of frame. */
void
clear_to_end (struct frame *f)
{
(*FRAME_TERMINAL (f)->clear_to_end_hook) (f);
}
-/* Clear entire frame */
+/* Clear entire frame. */
void
clear_frame (struct frame *f)
(*FRAME_TERMINAL (f)->ins_del_lines_hook) (f, vpos, n);
}
+/* Return the terminal object specified by TERMINAL. TERMINAL may
+ be a terminal object, a frame, or nil for the terminal device of
+ the current frame. If TERMINAL is neither from the above or the
+ resulting terminal object is deleted, return NULL. */
-\f
-
-/* Return the terminal object specified by TERMINAL. TERMINAL may be
- a terminal object, a frame, or nil for the terminal device of the
- current frame. If THROW is false, return NULL for failure,
- otherwise throw an error. */
-
-struct terminal *
-get_terminal (Lisp_Object terminal, bool throw)
+static struct terminal *
+decode_terminal (Lisp_Object terminal)
{
- struct terminal *result = NULL;
+ struct terminal *t;
if (NILP (terminal))
terminal = selected_frame;
+ t = (TERMINALP (terminal)
+ ? XTERMINAL (terminal)
+ : FRAMEP (terminal) ? FRAME_TERMINAL (XFRAME (terminal)) : NULL);
+ return t && t->name ? t : NULL;
+}
- if (TERMINALP (terminal))
- result = XTERMINAL (terminal);
- else if (FRAMEP (terminal))
- result = FRAME_TERMINAL (XFRAME (terminal));
+/* Like above, but throw an error if TERMINAL is not valid or deleted. */
- if (result && !result->name)
- result = NULL;
+struct terminal *
+decode_live_terminal (Lisp_Object terminal)
+{
+ struct terminal *t = decode_terminal (terminal);
- if (result == NULL && throw)
+ if (!t)
wrong_type_argument (Qterminal_live_p, terminal);
+ return t;
+}
+
+/* Like decode_terminal, but ensure that the resulting terminal object refers
+ to a text-based terminal device. */
- return result;
+struct terminal *
+decode_tty_terminal (Lisp_Object terminal)
+{
+ struct terminal *t = decode_live_terminal (terminal);
+
+ return (t->type == output_termcap || t->type == output_msdos_raw) ? t : NULL;
}
-\f
+/* Return an active (not suspended) text-based terminal device that uses
+ the tty device with the given NAME, or NULL if the named terminal device
+ is not opened. */
+
+struct terminal *
+get_named_terminal (const char *name)
+{
+ struct terminal *t;
+
+ eassert (name);
+
+ for (t = terminal_list; t; t = t->next_terminal)
+ {
+ if ((t->type == output_termcap || t->type == output_msdos_raw)
+ && !strcmp (t->display_info.tty->name, name)
+ && TERMINAL_ACTIVE_P (t))
+ return t;
+ }
+ return NULL;
+}
-/* Create a new terminal object and add it to the terminal list. */
+/* Create a new terminal object of TYPE and add it to the terminal list. RIF
+ may be NULL if this terminal type doesn't support window-based redisplay. */
struct terminal *
-create_terminal (void)
+create_terminal (enum output_method type, struct redisplay_interface *rif)
{
struct terminal *terminal = allocate_terminal ();
Lisp_Object terminal_coding, keyboard_coding;
terminal->next_terminal = terminal_list;
terminal_list = terminal;
-
+ terminal->type = type;
+ terminal->rif = rif;
terminal->id = next_terminal_id++;
terminal->keyboard_coding = xmalloc (sizeof (struct coding_system));
}
}
-Lisp_Object Qrun_hook_with_args;
-static Lisp_Object Qdelete_terminal_functions;
DEFUN ("delete-terminal", Fdelete_terminal, Sdelete_terminal, 0, 2, 0,
doc: /* Delete TERMINAL by deleting all frames on it and closing the terminal.
TERMINAL may be a terminal object, a frame, or nil (meaning the
but if the second argument FORCE is non-nil, you may do so. */)
(Lisp_Object terminal, Lisp_Object force)
{
- struct terminal *t = get_terminal (terminal, 0);
+ struct terminal *t = decode_terminal (terminal);
if (!t)
return Qnil;
possible return values. */)
(Lisp_Object object)
{
- struct terminal *t;
-
- t = get_terminal (object, 0);
+ struct terminal *t = decode_terminal (object);
if (!t)
return Qnil;
selected frame's terminal). */)
(Lisp_Object terminal)
{
- struct terminal *t
- = TERMINALP (terminal) ? XTERMINAL (terminal) : get_terminal (terminal, 1);
+ struct terminal *t = decode_live_terminal (terminal);
return t->name ? build_string (t->name) : Qnil;
}
selected frame's terminal). */)
(Lisp_Object terminal)
{
- struct terminal *t
- = TERMINALP (terminal) ? XTERMINAL (terminal) : get_terminal (terminal, 1);
- return Fcopy_alist (t->param_alist);
+ return Fcopy_alist (decode_live_terminal (terminal)->param_alist);
}
DEFUN ("terminal-parameter", Fterminal_parameter, Sterminal_parameter, 2, 2, 0,
selected frame's terminal). */)
(Lisp_Object terminal, Lisp_Object parameter)
{
- Lisp_Object value;
- struct terminal *t
- = TERMINALP (terminal) ? XTERMINAL (terminal) : get_terminal (terminal, 1);
CHECK_SYMBOL (parameter);
- value = Fcdr (Fassq (parameter, t->param_alist));
- return value;
+ return Fcdr (Fassq (parameter, decode_live_terminal (terminal)->param_alist));
}
DEFUN ("set-terminal-parameter", Fset_terminal_parameter,
selected frame's terminal). */)
(Lisp_Object terminal, Lisp_Object parameter, Lisp_Object value)
{
- struct terminal *t
- = TERMINALP (terminal) ? XTERMINAL (terminal) : get_terminal (terminal, 1);
- return store_terminal_param (t, parameter, value);
+ return store_terminal_param (decode_live_terminal (terminal), parameter, value);
}
-\f
+/* Initial frame has no device-dependent output data, but has
+ face cache which should be freed when the frame is deleted. */
+
+static void
+initial_free_frame_resources (struct frame *f)
+{
+ eassert (FRAME_INITIAL_P (f));
+ free_frame_faces (f);
+}
/* Create the bootstrap display terminal for the initial frame.
Returns a terminal of type output_initial. */
if (initialized || terminal_list || tty_list)
emacs_abort ();
- initial_terminal = create_terminal ();
- initial_terminal->type = output_initial;
+ initial_terminal = create_terminal (output_initial, NULL);
initial_terminal->name = xstrdup ("initial_terminal");
initial_terminal->kboard = initial_kboard;
initial_terminal->delete_terminal_hook = &delete_initial_terminal;
- /* All other hooks are NULL. */
+ initial_terminal->delete_frame_hook = &initial_free_frame_resources;
+ /* Other hooks are NULL by default. */
return initial_terminal;
}
This may be called just before actually deleting the terminal,
or some time later. */);
Vdelete_terminal_functions = Qnil;
+
+ DEFSYM (Qterminal_live_p, "terminal-live-p");
DEFSYM (Qdelete_terminal_functions, "delete-terminal-functions");
DEFSYM (Qrun_hook_with_args, "run-hook-with-args");