| 1 | /* CLI Definitions for GDB, the GNU debugger. |
| 2 | |
| 3 | Copyright (c) 2002, 2003, 2007, 2008, 2009 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 3 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, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #include "defs.h" |
| 21 | #include "interps.h" |
| 22 | #include "wrapper.h" |
| 23 | #include "event-top.h" |
| 24 | #include "ui-out.h" |
| 25 | #include "cli-out.h" |
| 26 | #include "top.h" /* for "execute_command" */ |
| 27 | #include "gdb_string.h" |
| 28 | #include "exceptions.h" |
| 29 | |
| 30 | struct ui_out *cli_uiout; |
| 31 | |
| 32 | /* These are the ui_out and the interpreter for the console interpreter. */ |
| 33 | |
| 34 | /* Longjmp-safe wrapper for "execute_command". */ |
| 35 | static struct gdb_exception safe_execute_command (struct ui_out *uiout, |
| 36 | char *command, int from_tty); |
| 37 | struct captured_execute_command_args |
| 38 | { |
| 39 | char *command; |
| 40 | int from_tty; |
| 41 | }; |
| 42 | |
| 43 | /* These implement the cli out interpreter: */ |
| 44 | |
| 45 | static void * |
| 46 | cli_interpreter_init (int top_level) |
| 47 | { |
| 48 | return NULL; |
| 49 | } |
| 50 | |
| 51 | static int |
| 52 | cli_interpreter_resume (void *data) |
| 53 | { |
| 54 | struct ui_file *stream; |
| 55 | |
| 56 | /*sync_execution = 1; */ |
| 57 | |
| 58 | /* gdb_setup_readline will change gdb_stdout. If the CLI was previously |
| 59 | writing to gdb_stdout, then set it to the new gdb_stdout afterwards. */ |
| 60 | |
| 61 | stream = cli_out_set_stream (cli_uiout, gdb_stdout); |
| 62 | if (stream != gdb_stdout) |
| 63 | { |
| 64 | cli_out_set_stream (cli_uiout, stream); |
| 65 | stream = NULL; |
| 66 | } |
| 67 | |
| 68 | gdb_setup_readline (); |
| 69 | |
| 70 | if (stream != NULL) |
| 71 | cli_out_set_stream (cli_uiout, gdb_stdout); |
| 72 | |
| 73 | return 1; |
| 74 | } |
| 75 | |
| 76 | static int |
| 77 | cli_interpreter_suspend (void *data) |
| 78 | { |
| 79 | gdb_disable_readline (); |
| 80 | return 1; |
| 81 | } |
| 82 | |
| 83 | /* Don't display the prompt if we are set quiet. */ |
| 84 | static int |
| 85 | cli_interpreter_display_prompt_p (void *data) |
| 86 | { |
| 87 | if (interp_quiet_p (NULL)) |
| 88 | return 0; |
| 89 | else |
| 90 | return 1; |
| 91 | } |
| 92 | |
| 93 | static struct gdb_exception |
| 94 | cli_interpreter_exec (void *data, const char *command_str) |
| 95 | { |
| 96 | struct ui_file *old_stream; |
| 97 | struct gdb_exception result; |
| 98 | |
| 99 | /* FIXME: cagney/2003-02-01: Need to const char *propogate |
| 100 | safe_execute_command. */ |
| 101 | char *str = strcpy (alloca (strlen (command_str) + 1), command_str); |
| 102 | |
| 103 | /* gdb_stdout could change between the time cli_uiout was initialized |
| 104 | and now. Since we're probably using a different interpreter which has |
| 105 | a new ui_file for gdb_stdout, use that one instead of the default. |
| 106 | |
| 107 | It is important that it gets reset everytime, since the user could |
| 108 | set gdb to use a different interpreter. */ |
| 109 | old_stream = cli_out_set_stream (cli_uiout, gdb_stdout); |
| 110 | result = safe_execute_command (cli_uiout, str, 1); |
| 111 | cli_out_set_stream (cli_uiout, old_stream); |
| 112 | return result; |
| 113 | } |
| 114 | |
| 115 | static void |
| 116 | do_captured_execute_command (struct ui_out *uiout, void *data) |
| 117 | { |
| 118 | struct captured_execute_command_args *args = |
| 119 | (struct captured_execute_command_args *) data; |
| 120 | execute_command (args->command, args->from_tty); |
| 121 | } |
| 122 | |
| 123 | static struct gdb_exception |
| 124 | safe_execute_command (struct ui_out *uiout, char *command, int from_tty) |
| 125 | { |
| 126 | struct gdb_exception e; |
| 127 | struct captured_execute_command_args args; |
| 128 | args.command = command; |
| 129 | args.from_tty = from_tty; |
| 130 | e = catch_exception (uiout, do_captured_execute_command, &args, |
| 131 | RETURN_MASK_ALL); |
| 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); |
| 135 | return e; |
| 136 | } |
| 137 | |
| 138 | |
| 139 | /* Standard gdb initialization hook. */ |
| 140 | extern initialize_file_ftype _initialize_cli_interp; /* -Wmissing-prototypes */ |
| 141 | |
| 142 | void |
| 143 | _initialize_cli_interp (void) |
| 144 | { |
| 145 | static const struct interp_procs procs = { |
| 146 | cli_interpreter_init, /* init_proc */ |
| 147 | cli_interpreter_resume, /* resume_proc */ |
| 148 | cli_interpreter_suspend, /* suspend_proc */ |
| 149 | cli_interpreter_exec, /* exec_proc */ |
| 150 | cli_interpreter_display_prompt_p /* prompt_proc_p */ |
| 151 | }; |
| 152 | struct interp *cli_interp; |
| 153 | |
| 154 | /* Create a default uiout builder for the CLI. */ |
| 155 | cli_uiout = cli_out_new (gdb_stdout); |
| 156 | cli_interp = interp_new (INTERP_CONSOLE, NULL, cli_uiout, &procs); |
| 157 | |
| 158 | interp_add (cli_interp); |
| 159 | } |