1 /* Command-line output logging for GDB, the GNU debugger.
3 Copyright (c) 2003, 2004, 2007, 2008, 2009, 2010
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 "gdb_assert.h"
26 #include "gdb_string.h"
28 /* These hold the pushed copies of the gdb output files.
29 If NULL then nothing has yet been pushed. */
30 struct saved_output_files
37 static struct saved_output_files saved_output;
38 static char *saved_filename;
40 static char *logging_filename;
42 show_logging_filename (struct ui_file *file, int from_tty,
43 struct cmd_list_element *c, const char *value)
45 fprintf_filtered (file, _("The current logfile is \"%s\".\n"),
49 static int logging_overwrite;
52 set_logging_overwrite (char *args, int from_tty, struct cmd_list_element *c)
55 warning (_("Currently logging to %s. Turn the logging off and on to "
56 "make the new setting effective."), saved_filename);
60 show_logging_overwrite (struct ui_file *file, int from_tty,
61 struct cmd_list_element *c, const char *value)
63 fprintf_filtered (file, _("\
64 Whether logging overwrites or appends to the log file is %s.\n"),
68 /* Value as configured by the user. */
69 static int logging_redirect;
71 /* The on-disk file in use if logging is currently active together with
72 redirection turned off (and therefore using tee_file_new). For active
73 logging with redirection the on-disk file is directly in GDB_STDOUT and
74 this variable is NULL. */
75 static struct ui_file *logging_no_redirect_file;
78 set_logging_redirect (char *args, int from_tty, struct cmd_list_element *c)
80 struct cleanup *cleanups = NULL;
81 struct ui_file *output, *new_logging_no_redirect_file;
83 if (saved_filename == NULL
84 || (logging_redirect != 0 && logging_no_redirect_file == NULL)
85 || (logging_redirect == 0 && logging_no_redirect_file != NULL))
88 if (logging_redirect != 0)
90 gdb_assert (logging_no_redirect_file != NULL);
92 /* ui_out_redirect still has not been called for next gdb_stdout. */
93 cleanups = make_cleanup_ui_file_delete (gdb_stdout);
95 output = logging_no_redirect_file;
96 new_logging_no_redirect_file = NULL;
99 fprintf_unfiltered (saved_output.out, "Redirecting output to %s.\n",
104 gdb_assert (logging_no_redirect_file == NULL);
105 output = tee_file_new (saved_output.out, 0, gdb_stdout, 0);
107 perror_with_name (_("set logging"));
108 new_logging_no_redirect_file = gdb_stdout;
111 fprintf_unfiltered (saved_output.out, "Copying output to %s.\n",
118 gdb_stdtarg = output;
119 logging_no_redirect_file = new_logging_no_redirect_file;
121 /* It should not happen, the redirection has been already setup. */
122 if (ui_out_redirect (uiout, output) < 0)
123 warning (_("Current output protocol does not support redirection"));
125 if (logging_redirect != 0)
126 do_cleanups (cleanups);
130 show_logging_redirect (struct ui_file *file, int from_tty,
131 struct cmd_list_element *c, const char *value)
133 fprintf_filtered (file, _("The logging output mode is %s.\n"), value);
136 /* If we've pushed output files, close them and pop them. */
138 pop_output_files (void)
140 /* Only delete one of the files -- they are all set to the same
142 ui_file_delete (gdb_stdout);
143 if (logging_no_redirect_file)
145 ui_file_delete (logging_no_redirect_file);
146 logging_no_redirect_file = NULL;
148 gdb_stdout = saved_output.out;
149 gdb_stderr = saved_output.err;
150 gdb_stdlog = saved_output.log;
151 gdb_stdtarg = saved_output.targ;
152 saved_output.out = NULL;
153 saved_output.err = NULL;
154 saved_output.log = NULL;
155 saved_output.targ = NULL;
157 ui_out_redirect (uiout, NULL);
160 /* This is a helper for the `set logging' command. */
162 handle_redirections (int from_tty)
164 struct cleanup *cleanups;
165 struct ui_file *output;
167 if (saved_filename != NULL)
169 fprintf_unfiltered (gdb_stdout, "Already logging to %s.\n",
174 output = gdb_fopen (logging_filename, logging_overwrite ? "w" : "a");
176 perror_with_name (_("set logging"));
177 cleanups = make_cleanup_ui_file_delete (output);
179 /* Redirects everything to gdb_stdout while this is running. */
180 if (!logging_redirect)
182 struct ui_file *no_redirect_file = output;
184 output = tee_file_new (gdb_stdout, 0, no_redirect_file, 0);
186 perror_with_name (_("set logging"));
187 make_cleanup_ui_file_delete (output);
189 fprintf_unfiltered (gdb_stdout, "Copying output to %s.\n",
191 logging_no_redirect_file = no_redirect_file;
195 gdb_assert (logging_no_redirect_file == NULL);
198 fprintf_unfiltered (gdb_stdout, "Redirecting output to %s.\n",
202 discard_cleanups (cleanups);
204 saved_filename = xstrdup (logging_filename);
205 saved_output.out = gdb_stdout;
206 saved_output.err = gdb_stderr;
207 saved_output.log = gdb_stdlog;
208 saved_output.targ = gdb_stdtarg;
213 gdb_stdtarg = output;
215 if (ui_out_redirect (uiout, gdb_stdout) < 0)
216 warning (_("Current output protocol does not support redirection"));
220 set_logging_on (char *args, int from_tty)
226 xfree (logging_filename);
227 logging_filename = xstrdup (rest);
229 handle_redirections (from_tty);
233 set_logging_off (char *args, int from_tty)
235 if (saved_filename == NULL)
240 fprintf_unfiltered (gdb_stdout, "Done logging to %s.\n", saved_filename);
241 xfree (saved_filename);
242 saved_filename = NULL;
246 set_logging_command (char *args, int from_tty)
248 printf_unfiltered (_("\
249 \"set logging\" lets you log output to a file.\n\
250 Usage: set logging on [FILENAME]\n\
252 set logging file FILENAME\n\
253 set logging overwrite [on|off]\n\
254 set logging redirect [on|off]\n"));
258 show_logging_command (char *args, int from_tty)
261 printf_unfiltered (_("Currently logging to \"%s\".\n"), saved_filename);
262 if (saved_filename == NULL
263 || strcmp (logging_filename, saved_filename) != 0)
264 printf_unfiltered (_("Future logs will be written to %s.\n"),
267 if (logging_overwrite)
268 printf_unfiltered (_("Logs will overwrite the log file.\n"));
270 printf_unfiltered (_("Logs will be appended to the log file.\n"));
274 if (logging_redirect)
275 printf_unfiltered (_("Output is being sent only to the log file.\n"));
277 printf_unfiltered (_("Output is being logged and displayed.\n"));
281 if (logging_redirect)
282 printf_unfiltered (_("Output will be sent only to the log file.\n"));
284 printf_unfiltered (_("Output will be logged and displayed.\n"));
288 /* Provide a prototype to silence -Wmissing-prototypes. */
289 extern initialize_file_ftype _initialize_cli_logging;
292 _initialize_cli_logging (void)
294 static struct cmd_list_element *set_logging_cmdlist, *show_logging_cmdlist;
296 add_prefix_cmd ("logging", class_support, set_logging_command,
297 _("Set logging options"), &set_logging_cmdlist,
298 "set logging ", 0, &setlist);
299 add_prefix_cmd ("logging", class_support, show_logging_command,
300 _("Show logging options"), &show_logging_cmdlist,
301 "show logging ", 0, &showlist);
302 add_setshow_boolean_cmd ("overwrite", class_support, &logging_overwrite, _("\
303 Set whether logging overwrites or appends to the log file."), _("\
304 Show whether logging overwrites or appends to the log file."), _("\
305 If set, logging overrides the log file."),
306 set_logging_overwrite,
307 show_logging_overwrite,
308 &set_logging_cmdlist, &show_logging_cmdlist);
309 add_setshow_boolean_cmd ("redirect", class_support, &logging_redirect, _("\
310 Set the logging output mode."), _("\
311 Show the logging output mode."), _("\
312 If redirect is off, output will go to both the screen and the log file.\n\
313 If redirect is on, output will go only to the log file."),
314 set_logging_redirect,
315 show_logging_redirect,
316 &set_logging_cmdlist, &show_logging_cmdlist);
317 add_setshow_filename_cmd ("file", class_support, &logging_filename, _("\
318 Set the current logfile."), _("\
319 Show the current logfile."), _("\
320 The logfile is used when directing GDB's output."),
322 show_logging_filename,
323 &set_logging_cmdlist, &show_logging_cmdlist);
324 add_cmd ("on", class_support, set_logging_on,
325 _("Enable logging."), &set_logging_cmdlist);
326 add_cmd ("off", class_support, set_logging_off,
327 _("Disable logging."), &set_logging_cmdlist);
329 logging_filename = xstrdup ("gdb.txt");