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/* Command-line output logging for GDB, the GNU debugger.
Copyright (c) 2003, 2004, 2007, 2008, 2009 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "gdbcmd.h"
#include "ui-out.h"
#include "gdb_string.h"
/* These hold the pushed copies of the gdb output files.
If NULL then nothing has yet been pushed. */
struct saved_output_files
{
struct ui_file *out;
struct ui_file *err;
struct ui_file *log;
struct ui_file *targ;
};
static struct saved_output_files saved_output;
static char *saved_filename;
static char *logging_filename;
static void
show_logging_filename (struct ui_file *file, int from_tty,
struct cmd_list_element *c, const char *value)
{
fprintf_filtered (file, _("The current logfile is \"%s\".\n"),
value);
}
int logging_overwrite;
static void
show_logging_overwrite (struct ui_file *file, int from_tty,
struct cmd_list_element *c, const char *value)
{
fprintf_filtered (file, _("\
Whether logging overwrites or appends to the log file is %s.\n"),
value);
}
int logging_redirect;
static void
show_logging_redirect (struct ui_file *file, int from_tty,
struct cmd_list_element *c, const char *value)
{
fprintf_filtered (file, _("The logging output mode is %s.\n"), value);
}
/* If we've pushed output files, close them and pop them. */
static void
pop_output_files (void)
{
/* Only delete one of the files -- they are all set to the same
value. */
ui_file_delete (gdb_stdout);
gdb_stdout = saved_output.out;
gdb_stderr = saved_output.err;
gdb_stdlog = saved_output.log;
gdb_stdtarg = saved_output.targ;
saved_output.out = NULL;
saved_output.err = NULL;
saved_output.log = NULL;
saved_output.targ = NULL;
ui_out_redirect (uiout, NULL);
}
/* This is a helper for the `set logging' command. */
static void
handle_redirections (int from_tty)
{
struct cleanup *cleanups;
struct ui_file *output;
if (saved_filename != NULL)
{
fprintf_unfiltered (gdb_stdout, "Already logging to %s.\n",
saved_filename);
return;
}
output = gdb_fopen (logging_filename, logging_overwrite ? "w" : "a");
if (output == NULL)
perror_with_name (_("set logging"));
cleanups = make_cleanup_ui_file_delete (output);
/* Redirects everything to gdb_stdout while this is running. */
if (!logging_redirect)
{
output = tee_file_new (gdb_stdout, 0, output, 1);
if (output == NULL)
perror_with_name (_("set logging"));
discard_cleanups (cleanups);
cleanups = make_cleanup_ui_file_delete (output);
if (from_tty)
fprintf_unfiltered (gdb_stdout, "Copying output to %s.\n",
logging_filename);
}
else if (from_tty)
fprintf_unfiltered (gdb_stdout, "Redirecting output to %s.\n",
logging_filename);
discard_cleanups (cleanups);
saved_filename = xstrdup (logging_filename);
saved_output.out = gdb_stdout;
saved_output.err = gdb_stderr;
saved_output.log = gdb_stdlog;
saved_output.targ = gdb_stdtarg;
gdb_stdout = output;
gdb_stderr = output;
gdb_stdlog = output;
gdb_stdtarg = output;
if (ui_out_redirect (uiout, gdb_stdout) < 0)
warning (_("Current output protocol does not support redirection"));
}
static void
set_logging_on (char *args, int from_tty)
{
char *rest = args;
if (rest && *rest)
{
xfree (logging_filename);
logging_filename = xstrdup (rest);
}
handle_redirections (from_tty);
}
static void
set_logging_off (char *args, int from_tty)
{
if (saved_filename == NULL)
return;
pop_output_files ();
if (from_tty)
fprintf_unfiltered (gdb_stdout, "Done logging to %s.\n", saved_filename);
xfree (saved_filename);
saved_filename = NULL;
}
static void
set_logging_command (char *args, int from_tty)
{
printf_unfiltered (_("\
\"set logging\" lets you log output to a file.\n\
Usage: set logging on [FILENAME]\n\
set logging off\n\
set logging file FILENAME\n\
set logging overwrite [on|off]\n\
set logging redirect [on|off]\n"));
}
static void
show_logging_command (char *args, int from_tty)
{
if (saved_filename)
printf_unfiltered (_("Currently logging to \"%s\".\n"), saved_filename);
if (saved_filename == NULL
|| strcmp (logging_filename, saved_filename) != 0)
printf_unfiltered (_("Future logs will be written to %s.\n"),
logging_filename);
if (logging_overwrite)
printf_unfiltered (_("Logs will overwrite the log file.\n"));
else
printf_unfiltered (_("Logs will be appended to the log file.\n"));
if (logging_redirect)
printf_unfiltered (_("Output will be sent only to the log file.\n"));
else
printf_unfiltered (_("Output will be logged and displayed.\n"));
}
/* Provide a prototype to silence -Wmissing-prototypes. */
extern initialize_file_ftype _initialize_cli_logging;
void
_initialize_cli_logging (void)
{
static struct cmd_list_element *set_logging_cmdlist, *show_logging_cmdlist;
add_prefix_cmd ("logging", class_support, set_logging_command,
_("Set logging options"), &set_logging_cmdlist,
"set logging ", 0, &setlist);
add_prefix_cmd ("logging", class_support, show_logging_command,
_("Show logging options"), &show_logging_cmdlist,
"show logging ", 0, &showlist);
add_setshow_boolean_cmd ("overwrite", class_support, &logging_overwrite, _("\
Set whether logging overwrites or appends to the log file."), _("\
Show whether logging overwrites or appends to the log file."), _("\
If set, logging overrides the log file."),
NULL,
show_logging_overwrite,
&set_logging_cmdlist, &show_logging_cmdlist);
add_setshow_boolean_cmd ("redirect", class_support, &logging_redirect, _("\
Set the logging output mode."), _("\
Show the logging output mode."), _("\
If redirect is off, output will go to both the screen and the log file.\n\
If redirect is on, output will go only to the log file."),
NULL,
show_logging_redirect,
&set_logging_cmdlist, &show_logging_cmdlist);
add_setshow_filename_cmd ("file", class_support, &logging_filename, _("\
Set the current logfile."), _("\
Show the current logfile."), _("\
The logfile is used when directing GDB's output."),
NULL,
show_logging_filename,
&set_logging_cmdlist, &show_logging_cmdlist);
add_cmd ("on", class_support, set_logging_on,
_("Enable logging."), &set_logging_cmdlist);
add_cmd ("off", class_support, set_logging_off,
_("Disable logging."), &set_logging_cmdlist);
logging_filename = xstrdup ("gdb.txt");
}
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