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/* Command-line output logging for GDB, the GNU debugger.
Copyright 2003
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 2 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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#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;
int logging_overwrite, logging_redirect;
/* If we've pushed output files, close them and pop them. */
static void
pop_output_files ()
{
/* 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 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");
/* 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");
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);
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");
printf_unfiltered ("Usage: set logging on [FILENAME]\n");
printf_unfiltered (" set logging off\n");
printf_unfiltered (" set logging file FILENAME\n");
printf_unfiltered (" set logging overwrite [on|off]\n");
printf_unfiltered (" set logging redirect [on|off]\n");
}
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");
}
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.\n",
"Show whether logging overwrites or appends "
"to the log file.\n",
NULL, NULL, &set_logging_cmdlist, &show_logging_cmdlist);
add_setshow_boolean_cmd ("redirect", class_support, &logging_redirect,
"Set the logging output mode.\n"
"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.",
"Show the logging output mode.\n"
"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, NULL, &set_logging_cmdlist, &show_logging_cmdlist);
add_setshow_cmd ("file", class_support, var_filename, &logging_filename,
"Set the current logfile.", "Show the current logfile.",
NULL, NULL, &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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