1 /* CLI Definitions for GDB, the GNU debugger.
2
3 Copyright 2002, 2003 Free Software Foundation, Inc.
4
5 This file is part of GDB.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
21
22 #include "defs.h"
23 #include "interps.h"
24 #include "wrapper.h"
25 #include "event-top.h"
26 #include "ui-out.h"
27 #include "cli-out.h"
28 #include "top.h" /* for "execute_command" */
29 #include "gdb_string.h"
30
31 struct ui_out *cli_uiout;
32
33 /* These are the ui_out and the interpreter for the console interpreter. */
34
35 /* Longjmp-safe wrapper for "execute_command" */
36 static int do_captured_execute_command (struct ui_out *uiout, void *data);
37 static enum gdb_rc safe_execute_command (struct ui_out *uiout, char *command,
38 int from_tty);
39 struct captured_execute_command_args
40 {
41 char *command;
42 int from_tty;
43 };
44
45 /* These implement the cli out interpreter: */
46
47 static void *
cli_interpreter_init(void)48 cli_interpreter_init (void)
49 {
50 return NULL;
51 }
52
53 static int
cli_interpreter_resume(void * data)54 cli_interpreter_resume (void *data)
55 {
56 struct ui_file *stream;
57
58 /*sync_execution = 1; */
59
60 /* gdb_setup_readline will change gdb_stdout. If the CLI was previously
61 writing to gdb_stdout, then set it to the new gdb_stdout afterwards. */
62
63 stream = cli_out_set_stream (cli_uiout, gdb_stdout);
64 if (stream != gdb_stdout)
65 {
66 cli_out_set_stream (cli_uiout, stream);
67 stream = NULL;
68 }
69
70 gdb_setup_readline ();
71
72 if (stream != NULL)
73 cli_out_set_stream (cli_uiout, gdb_stdout);
74
75 return 1;
76 }
77
78 static int
cli_interpreter_suspend(void * data)79 cli_interpreter_suspend (void *data)
80 {
81 gdb_disable_readline ();
82 return 1;
83 }
84
85 /* Don't display the prompt if we are set quiet. */
86 static int
cli_interpreter_display_prompt_p(void * data)87 cli_interpreter_display_prompt_p (void *data)
88 {
89 if (interp_quiet_p (NULL))
90 return 0;
91 else
92 return 1;
93 }
94
95 static int
cli_interpreter_exec(void * data,const char * command_str)96 cli_interpreter_exec (void *data, const char *command_str)
97 {
98 int result;
99 struct ui_file *old_stream;
100
101 /* FIXME: cagney/2003-02-01: Need to const char *propogate
102 safe_execute_command. */
103 char *str = strcpy (alloca (strlen (command_str) + 1), command_str);
104
105 /* gdb_stdout could change between the time cli_uiout was initialized
106 and now. Since we're probably using a different interpreter which has
107 a new ui_file for gdb_stdout, use that one instead of the default.
108
109 It is important that it gets reset everytime, since the user could
110 set gdb to use a different interpreter. */
111 old_stream = cli_out_set_stream (cli_uiout, gdb_stdout);
112 result = safe_execute_command (cli_uiout, str, 1);
113 cli_out_set_stream (cli_uiout, old_stream);
114 return result;
115 }
116
117 static int
do_captured_execute_command(struct ui_out * uiout,void * data)118 do_captured_execute_command (struct ui_out *uiout, void *data)
119 {
120 struct captured_execute_command_args *args =
121 (struct captured_execute_command_args *) data;
122 execute_command (args->command, args->from_tty);
123 return GDB_RC_OK;
124 }
125
126 static enum gdb_rc
safe_execute_command(struct ui_out * uiout,char * command,int from_tty)127 safe_execute_command (struct ui_out *uiout, char *command, int from_tty)
128 {
129 struct captured_execute_command_args args;
130 args.command = command;
131 args.from_tty = from_tty;
132 return catch_exceptions (uiout, do_captured_execute_command, &args,
133 NULL, RETURN_MASK_ALL);
134 }
135
136
137 /* standard gdb initialization hook */
138 extern initialize_file_ftype _initialize_cli_interp; /* -Wmissing-prototypes */
139
140 void
_initialize_cli_interp(void)141 _initialize_cli_interp (void)
142 {
143 static const struct interp_procs procs = {
144 cli_interpreter_init, /* init_proc */
145 cli_interpreter_resume, /* resume_proc */
146 cli_interpreter_suspend, /* suspend_proc */
147 cli_interpreter_exec, /* exec_proc */
148 cli_interpreter_display_prompt_p /* prompt_proc_p */
149 };
150 struct interp *cli_interp;
151
152 /* Create a default uiout builder for the CLI. */
153 cli_uiout = cli_out_new (gdb_stdout);
154 cli_interp = interp_new (INTERP_CONSOLE, NULL, cli_uiout, &procs);
155
156 interp_add (cli_interp);
157 }
158