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0fac0b41 DJ |
1 | /* Command-line output logging for GDB, the GNU debugger. |
2 | ||
4c38e0a4 JB |
3 | Copyright (c) 2003, 2004, 2007, 2008, 2009, 2010 |
4 | Free Software Foundation, Inc. | |
0fac0b41 DJ |
5 | |
6 | This file is part of GDB. | |
7 | ||
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 | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
0fac0b41 DJ |
11 | (at your option) any later version. |
12 | ||
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. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
0fac0b41 DJ |
20 | |
21 | #include "defs.h" | |
22 | #include "gdbcmd.h" | |
23 | #include "ui-out.h" | |
58b61394 | 24 | #include "gdb_assert.h" |
0fac0b41 DJ |
25 | |
26 | #include "gdb_string.h" | |
27 | ||
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 | |
31 | { | |
32 | struct ui_file *out; | |
33 | struct ui_file *err; | |
34 | struct ui_file *log; | |
35 | struct ui_file *targ; | |
8d4d924b | 36 | struct ui_file *targerr; |
0fac0b41 DJ |
37 | }; |
38 | static struct saved_output_files saved_output; | |
39 | static char *saved_filename; | |
40 | ||
41 | static char *logging_filename; | |
920d2a44 AC |
42 | static void |
43 | show_logging_filename (struct ui_file *file, int from_tty, | |
44 | struct cmd_list_element *c, const char *value) | |
45 | { | |
46 | fprintf_filtered (file, _("The current logfile is \"%s\".\n"), | |
47 | value); | |
48 | } | |
49 | ||
44be957e | 50 | static int logging_overwrite; |
58b61394 JK |
51 | |
52 | static void | |
53 | set_logging_overwrite (char *args, int from_tty, struct cmd_list_element *c) | |
54 | { | |
55 | if (saved_filename) | |
56 | warning (_("Currently logging to %s. Turn the logging off and on to " | |
57 | "make the new setting effective."), saved_filename); | |
58 | } | |
59 | ||
920d2a44 AC |
60 | static void |
61 | show_logging_overwrite (struct ui_file *file, int from_tty, | |
62 | struct cmd_list_element *c, const char *value) | |
63 | { | |
64 | fprintf_filtered (file, _("\ | |
65 | Whether logging overwrites or appends to the log file is %s.\n"), | |
66 | value); | |
67 | } | |
68 | ||
58b61394 | 69 | /* Value as configured by the user. */ |
44be957e | 70 | static int logging_redirect; |
58b61394 | 71 | |
ebcd3b23 MS |
72 | /* The on-disk file in use if logging is currently active together |
73 | with redirection turned off (and therefore using tee_file_new). | |
74 | For active logging with redirection the on-disk file is directly in | |
75 | GDB_STDOUT and this variable is NULL. */ | |
58b61394 JK |
76 | static struct ui_file *logging_no_redirect_file; |
77 | ||
78 | static void | |
79 | set_logging_redirect (char *args, int from_tty, struct cmd_list_element *c) | |
80 | { | |
81 | struct cleanup *cleanups = NULL; | |
82 | struct ui_file *output, *new_logging_no_redirect_file; | |
83 | ||
84 | if (saved_filename == NULL | |
85 | || (logging_redirect != 0 && logging_no_redirect_file == NULL) | |
86 | || (logging_redirect == 0 && logging_no_redirect_file != NULL)) | |
87 | return; | |
88 | ||
89 | if (logging_redirect != 0) | |
90 | { | |
91 | gdb_assert (logging_no_redirect_file != NULL); | |
92 | ||
ebcd3b23 MS |
93 | /* ui_out_redirect still has not been called for next |
94 | gdb_stdout. */ | |
58b61394 JK |
95 | cleanups = make_cleanup_ui_file_delete (gdb_stdout); |
96 | ||
97 | output = logging_no_redirect_file; | |
98 | new_logging_no_redirect_file = NULL; | |
99 | ||
100 | if (from_tty) | |
101 | fprintf_unfiltered (saved_output.out, "Redirecting output to %s.\n", | |
102 | logging_filename); | |
103 | } | |
104 | else | |
105 | { | |
106 | gdb_assert (logging_no_redirect_file == NULL); | |
107 | output = tee_file_new (saved_output.out, 0, gdb_stdout, 0); | |
108 | if (output == NULL) | |
109 | perror_with_name (_("set logging")); | |
110 | new_logging_no_redirect_file = gdb_stdout; | |
111 | ||
112 | if (from_tty) | |
113 | fprintf_unfiltered (saved_output.out, "Copying output to %s.\n", | |
114 | logging_filename); | |
115 | } | |
116 | ||
117 | gdb_stdout = output; | |
118 | gdb_stderr = output; | |
119 | gdb_stdlog = output; | |
120 | gdb_stdtarg = output; | |
8d4d924b | 121 | gdb_stdtargerr = output; |
58b61394 JK |
122 | logging_no_redirect_file = new_logging_no_redirect_file; |
123 | ||
ebcd3b23 MS |
124 | /* There is a former output pushed on the ui_out_redirect stack. We |
125 | want to replace it by OUTPUT so we must pop the former value | |
126 | first. We should either do both the pop and push or to do | |
127 | neither of it. At least do not try to push OUTPUT if the pop | |
128 | already failed. */ | |
14dba4b4 JK |
129 | |
130 | if (ui_out_redirect (uiout, NULL) < 0 | |
131 | || ui_out_redirect (uiout, output) < 0) | |
58b61394 JK |
132 | warning (_("Current output protocol does not support redirection")); |
133 | ||
134 | if (logging_redirect != 0) | |
135 | do_cleanups (cleanups); | |
136 | } | |
137 | ||
920d2a44 AC |
138 | static void |
139 | show_logging_redirect (struct ui_file *file, int from_tty, | |
140 | struct cmd_list_element *c, const char *value) | |
141 | { | |
142 | fprintf_filtered (file, _("The logging output mode is %s.\n"), value); | |
143 | } | |
0fac0b41 DJ |
144 | |
145 | /* If we've pushed output files, close them and pop them. */ | |
146 | static void | |
83a8ccca | 147 | pop_output_files (void) |
0fac0b41 DJ |
148 | { |
149 | /* Only delete one of the files -- they are all set to the same | |
150 | value. */ | |
151 | ui_file_delete (gdb_stdout); | |
58b61394 JK |
152 | if (logging_no_redirect_file) |
153 | { | |
154 | ui_file_delete (logging_no_redirect_file); | |
155 | logging_no_redirect_file = NULL; | |
156 | } | |
0fac0b41 DJ |
157 | gdb_stdout = saved_output.out; |
158 | gdb_stderr = saved_output.err; | |
159 | gdb_stdlog = saved_output.log; | |
160 | gdb_stdtarg = saved_output.targ; | |
8d4d924b | 161 | gdb_stdtargerr = saved_output.targ; |
0fac0b41 DJ |
162 | saved_output.out = NULL; |
163 | saved_output.err = NULL; | |
164 | saved_output.log = NULL; | |
165 | saved_output.targ = NULL; | |
8d4d924b | 166 | saved_output.targerr = NULL; |
0fac0b41 DJ |
167 | |
168 | ui_out_redirect (uiout, NULL); | |
169 | } | |
170 | ||
171 | /* This is a helper for the `set logging' command. */ | |
172 | static void | |
173 | handle_redirections (int from_tty) | |
174 | { | |
724b958c | 175 | struct cleanup *cleanups; |
0fac0b41 DJ |
176 | struct ui_file *output; |
177 | ||
178 | if (saved_filename != NULL) | |
179 | { | |
180 | fprintf_unfiltered (gdb_stdout, "Already logging to %s.\n", | |
181 | saved_filename); | |
182 | return; | |
183 | } | |
184 | ||
185 | output = gdb_fopen (logging_filename, logging_overwrite ? "w" : "a"); | |
186 | if (output == NULL) | |
e2e0b3e5 | 187 | perror_with_name (_("set logging")); |
724b958c | 188 | cleanups = make_cleanup_ui_file_delete (output); |
0fac0b41 DJ |
189 | |
190 | /* Redirects everything to gdb_stdout while this is running. */ | |
191 | if (!logging_redirect) | |
192 | { | |
58b61394 JK |
193 | struct ui_file *no_redirect_file = output; |
194 | ||
195 | output = tee_file_new (gdb_stdout, 0, no_redirect_file, 0); | |
0fac0b41 | 196 | if (output == NULL) |
e2e0b3e5 | 197 | perror_with_name (_("set logging")); |
58b61394 | 198 | make_cleanup_ui_file_delete (output); |
0fac0b41 DJ |
199 | if (from_tty) |
200 | fprintf_unfiltered (gdb_stdout, "Copying output to %s.\n", | |
201 | logging_filename); | |
58b61394 JK |
202 | logging_no_redirect_file = no_redirect_file; |
203 | } | |
204 | else | |
205 | { | |
206 | gdb_assert (logging_no_redirect_file == NULL); | |
207 | ||
208 | if (from_tty) | |
209 | fprintf_unfiltered (gdb_stdout, "Redirecting output to %s.\n", | |
210 | logging_filename); | |
0fac0b41 | 211 | } |
0fac0b41 | 212 | |
724b958c TT |
213 | discard_cleanups (cleanups); |
214 | ||
0fac0b41 DJ |
215 | saved_filename = xstrdup (logging_filename); |
216 | saved_output.out = gdb_stdout; | |
217 | saved_output.err = gdb_stderr; | |
218 | saved_output.log = gdb_stdlog; | |
219 | saved_output.targ = gdb_stdtarg; | |
8d4d924b | 220 | saved_output.targerr = gdb_stdtargerr; |
0fac0b41 DJ |
221 | |
222 | gdb_stdout = output; | |
223 | gdb_stderr = output; | |
224 | gdb_stdlog = output; | |
225 | gdb_stdtarg = output; | |
8d4d924b | 226 | gdb_stdtargerr = output; |
0fac0b41 | 227 | |
14dba4b4 | 228 | if (ui_out_redirect (uiout, output) < 0) |
8a3fe4f8 | 229 | warning (_("Current output protocol does not support redirection")); |
0fac0b41 DJ |
230 | } |
231 | ||
232 | static void | |
233 | set_logging_on (char *args, int from_tty) | |
234 | { | |
235 | char *rest = args; | |
cdb27c12 | 236 | |
0fac0b41 DJ |
237 | if (rest && *rest) |
238 | { | |
239 | xfree (logging_filename); | |
240 | logging_filename = xstrdup (rest); | |
241 | } | |
242 | handle_redirections (from_tty); | |
243 | } | |
244 | ||
245 | static void | |
246 | set_logging_off (char *args, int from_tty) | |
247 | { | |
248 | if (saved_filename == NULL) | |
249 | return; | |
250 | ||
251 | pop_output_files (); | |
252 | if (from_tty) | |
253 | fprintf_unfiltered (gdb_stdout, "Done logging to %s.\n", saved_filename); | |
254 | xfree (saved_filename); | |
255 | saved_filename = NULL; | |
256 | } | |
257 | ||
258 | static void | |
259 | set_logging_command (char *args, int from_tty) | |
260 | { | |
a3f17187 AC |
261 | printf_unfiltered (_("\ |
262 | \"set logging\" lets you log output to a file.\n\ | |
263 | Usage: set logging on [FILENAME]\n\ | |
264 | set logging off\n\ | |
265 | set logging file FILENAME\n\ | |
266 | set logging overwrite [on|off]\n\ | |
267 | set logging redirect [on|off]\n")); | |
0fac0b41 DJ |
268 | } |
269 | ||
2c0b251b | 270 | static void |
0fac0b41 DJ |
271 | show_logging_command (char *args, int from_tty) |
272 | { | |
273 | if (saved_filename) | |
a3f17187 | 274 | printf_unfiltered (_("Currently logging to \"%s\".\n"), saved_filename); |
0fac0b41 DJ |
275 | if (saved_filename == NULL |
276 | || strcmp (logging_filename, saved_filename) != 0) | |
a3f17187 | 277 | printf_unfiltered (_("Future logs will be written to %s.\n"), |
0fac0b41 DJ |
278 | logging_filename); |
279 | ||
280 | if (logging_overwrite) | |
a3f17187 | 281 | printf_unfiltered (_("Logs will overwrite the log file.\n")); |
0fac0b41 | 282 | else |
a3f17187 | 283 | printf_unfiltered (_("Logs will be appended to the log file.\n")); |
0fac0b41 | 284 | |
58b61394 JK |
285 | if (saved_filename) |
286 | { | |
287 | if (logging_redirect) | |
288 | printf_unfiltered (_("Output is being sent only to the log file.\n")); | |
289 | else | |
290 | printf_unfiltered (_("Output is being logged and displayed.\n")); | |
291 | } | |
0fac0b41 | 292 | else |
58b61394 JK |
293 | { |
294 | if (logging_redirect) | |
295 | printf_unfiltered (_("Output will be sent only to the log file.\n")); | |
296 | else | |
297 | printf_unfiltered (_("Output will be logged and displayed.\n")); | |
298 | } | |
0fac0b41 DJ |
299 | } |
300 | ||
2c0b251b PA |
301 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
302 | extern initialize_file_ftype _initialize_cli_logging; | |
303 | ||
0fac0b41 DJ |
304 | void |
305 | _initialize_cli_logging (void) | |
306 | { | |
307 | static struct cmd_list_element *set_logging_cmdlist, *show_logging_cmdlist; | |
308 | ||
0fac0b41 | 309 | add_prefix_cmd ("logging", class_support, set_logging_command, |
1bedd215 | 310 | _("Set logging options"), &set_logging_cmdlist, |
0fac0b41 DJ |
311 | "set logging ", 0, &setlist); |
312 | add_prefix_cmd ("logging", class_support, show_logging_command, | |
1bedd215 | 313 | _("Show logging options"), &show_logging_cmdlist, |
0fac0b41 | 314 | "show logging ", 0, &showlist); |
7915a72c AC |
315 | add_setshow_boolean_cmd ("overwrite", class_support, &logging_overwrite, _("\ |
316 | Set whether logging overwrites or appends to the log file."), _("\ | |
317 | Show whether logging overwrites or appends to the log file."), _("\ | |
318 | If set, logging overrides the log file."), | |
58b61394 | 319 | set_logging_overwrite, |
920d2a44 | 320 | show_logging_overwrite, |
2c5b56ce | 321 | &set_logging_cmdlist, &show_logging_cmdlist); |
7915a72c AC |
322 | add_setshow_boolean_cmd ("redirect", class_support, &logging_redirect, _("\ |
323 | Set the logging output mode."), _("\ | |
324 | Show the logging output mode."), _("\ | |
3b64bf98 | 325 | If redirect is off, output will go to both the screen and the log file.\n\ |
7915a72c | 326 | If redirect is on, output will go only to the log file."), |
58b61394 | 327 | set_logging_redirect, |
920d2a44 | 328 | show_logging_redirect, |
2c5b56ce | 329 | &set_logging_cmdlist, &show_logging_cmdlist); |
7915a72c AC |
330 | add_setshow_filename_cmd ("file", class_support, &logging_filename, _("\ |
331 | Set the current logfile."), _("\ | |
332 | Show the current logfile."), _("\ | |
333 | The logfile is used when directing GDB's output."), | |
2c5b56ce | 334 | NULL, |
920d2a44 | 335 | show_logging_filename, |
b3f42336 | 336 | &set_logging_cmdlist, &show_logging_cmdlist); |
0fac0b41 | 337 | add_cmd ("on", class_support, set_logging_on, |
1a966eab | 338 | _("Enable logging."), &set_logging_cmdlist); |
0fac0b41 | 339 | add_cmd ("off", class_support, set_logging_off, |
1a966eab | 340 | _("Disable logging."), &set_logging_cmdlist); |
0fac0b41 DJ |
341 | |
342 | logging_filename = xstrdup ("gdb.txt"); | |
343 | } |