1 /* CLI Definitions for GDB, the GNU debugger.
3 Copyright (c) 2002, 2003, 2007, 2008, 2009, 2010, 2011
4 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #include "event-top.h"
27 #include "top.h" /* for "execute_command" */
28 #include "gdb_string.h"
29 #include "exceptions.h"
31 struct ui_out *cli_uiout;
33 /* These are the ui_out and the interpreter for the console
36 /* Longjmp-safe wrapper for "execute_command". */
37 static struct gdb_exception safe_execute_command (struct ui_out *uiout,
40 /* These implement the cli out interpreter: */
43 cli_interpreter_init (struct interp *self, int top_level)
49 cli_interpreter_resume (void *data)
51 struct ui_file *stream;
53 /*sync_execution = 1; */
55 /* gdb_setup_readline will change gdb_stdout. If the CLI was
56 previously writing to gdb_stdout, then set it to the new
57 gdb_stdout afterwards. */
59 stream = cli_out_set_stream (cli_uiout, gdb_stdout);
60 if (stream != gdb_stdout)
62 cli_out_set_stream (cli_uiout, stream);
66 gdb_setup_readline ();
69 cli_out_set_stream (cli_uiout, gdb_stdout);
75 cli_interpreter_suspend (void *data)
77 gdb_disable_readline ();
81 /* Don't display the prompt if we are set quiet. */
83 cli_interpreter_display_prompt_p (void *data)
85 if (interp_quiet_p (NULL))
91 static struct gdb_exception
92 cli_interpreter_exec (void *data, const char *command_str)
94 struct ui_file *old_stream;
95 struct gdb_exception result;
97 /* FIXME: cagney/2003-02-01: Need to const char *propogate
98 safe_execute_command. */
99 char *str = strcpy (alloca (strlen (command_str) + 1), command_str);
101 /* gdb_stdout could change between the time cli_uiout was
102 initialized and now. Since we're probably using a different
103 interpreter which has a new ui_file for gdb_stdout, use that one
104 instead of the default.
106 It is important that it gets reset everytime, since the user
107 could set gdb to use a different interpreter. */
108 old_stream = cli_out_set_stream (cli_uiout, gdb_stdout);
109 result = safe_execute_command (cli_uiout, str, 1);
110 cli_out_set_stream (cli_uiout, old_stream);
114 static struct gdb_exception
115 safe_execute_command (struct ui_out *command_uiout, char *command, int from_tty)
117 volatile struct gdb_exception e;
118 struct ui_out *saved_uiout;
120 /* Save and override the global ``struct ui_out'' builder. */
121 saved_uiout = current_uiout;
122 current_uiout = command_uiout;
124 TRY_CATCH (e, RETURN_MASK_ALL)
126 execute_command (command, from_tty);
129 /* Restore the global builder. */
130 current_uiout = saved_uiout;
132 /* FIXME: cagney/2005-01-13: This shouldn't be needed. Instead the
133 caller should print the exception. */
134 exception_print (gdb_stderr, e);
138 static struct ui_out *
139 cli_ui_out (struct interp *self)
144 /* Standard gdb initialization hook. */
145 extern initialize_file_ftype _initialize_cli_interp; /* -Wmissing-prototypes */
148 _initialize_cli_interp (void)
150 static const struct interp_procs procs = {
151 cli_interpreter_init, /* init_proc */
152 cli_interpreter_resume, /* resume_proc */
153 cli_interpreter_suspend, /* suspend_proc */
154 cli_interpreter_exec, /* exec_proc */
155 cli_interpreter_display_prompt_p, /* prompt_proc_p */
156 cli_ui_out /* ui_out_proc */
158 struct interp *cli_interp;
160 /* Create a default uiout builder for the CLI. */
161 cli_uiout = cli_out_new (gdb_stdout);
162 cli_interp = interp_new (INTERP_CONSOLE, &procs);
164 interp_add (cli_interp);