170 lines
4 KiB
C
170 lines
4 KiB
C
/* TUI Interpreter definitions for GDB, the GNU debugger.
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Copyright (C) 2003, 2007-2012 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "interps.h"
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#include "top.h"
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#include "event-top.h"
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#include "event-loop.h"
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#include "ui-out.h"
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#include "cli-out.h"
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#include "tui/tui-data.h"
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#include "readline/readline.h"
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#include "tui/tui-win.h"
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#include "tui/tui.h"
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#include "tui/tui-io.h"
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#include "exceptions.h"
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/* Set to 1 when the TUI mode must be activated when we first start
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gdb. */
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static int tui_start_enabled = 0;
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/* Cleanup the tui before exiting. */
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static void
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tui_exit (void)
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{
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/* Disable the tui. Curses mode is left leaving the screen in a
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clean state (see endwin()). */
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tui_disable ();
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}
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/* True if TUI is the top-level interpreter. */
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static int tui_is_toplevel = 0;
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/* These implement the TUI interpreter. */
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static void *
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tui_init (struct interp *self, int top_level)
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{
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tui_is_toplevel = top_level;
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/* Install exit handler to leave the screen in a good shape. */
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atexit (tui_exit);
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tui_initialize_static_data ();
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tui_initialize_io ();
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tui_initialize_win ();
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if (ui_file_isatty (gdb_stdout))
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tui_initialize_readline ();
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return NULL;
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}
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/* True if enabling the TUI is allowed. Example, if the top level
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interpreter is MI, enabling curses will certainly lose. */
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int
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tui_allowed_p (void)
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{
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/* Only if TUI is the top level interpreter. Also don't try to
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setup curses (and print funny control characters) if we're not
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outputting to a terminal. */
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return tui_is_toplevel && ui_file_isatty (gdb_stdout);
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}
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static int
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tui_resume (void *data)
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{
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struct ui_file *stream;
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/* gdb_setup_readline will change gdb_stdout. If the TUI was
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previously writing to gdb_stdout, then set it to the new
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gdb_stdout afterwards. */
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stream = cli_out_set_stream (tui_old_uiout, gdb_stdout);
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if (stream != gdb_stdout)
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{
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cli_out_set_stream (tui_old_uiout, stream);
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stream = NULL;
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}
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gdb_setup_readline ();
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if (stream != NULL)
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cli_out_set_stream (tui_old_uiout, gdb_stdout);
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if (tui_start_enabled)
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tui_enable ();
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return 1;
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}
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static int
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tui_suspend (void *data)
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{
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tui_start_enabled = tui_active;
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tui_disable ();
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return 1;
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}
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/* Display the prompt if we are silent. */
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static int
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tui_display_prompt_p (void *data)
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{
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if (interp_quiet_p (NULL))
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return 0;
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else
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return 1;
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}
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static struct ui_out *
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tui_ui_out (struct interp *self)
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{
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if (tui_active)
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return tui_out;
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else
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return tui_old_uiout;
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}
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static struct gdb_exception
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tui_exec (void *data, const char *command_str)
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{
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internal_error (__FILE__, __LINE__, _("tui_exec called"));
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}
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/* Provide a prototype to silence -Wmissing-prototypes. */
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extern initialize_file_ftype _initialize_tui_interp;
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void
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_initialize_tui_interp (void)
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{
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static const struct interp_procs procs = {
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tui_init,
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tui_resume,
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tui_suspend,
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tui_exec,
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tui_display_prompt_p,
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tui_ui_out,
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};
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struct interp *tui_interp;
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/* Create a default uiout builder for the TUI. */
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tui_interp = interp_new (INTERP_TUI, &procs);
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interp_add (tui_interp);
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if (interpreter_p && strcmp (interpreter_p, INTERP_TUI) == 0)
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tui_start_enabled = 1;
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if (interpreter_p && strcmp (interpreter_p, INTERP_CONSOLE) == 0)
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{
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xfree (interpreter_p);
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interpreter_p = xstrdup (INTERP_TUI);
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}
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}
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