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/*
Copyright (c) 2000, 2011, Oracle and/or its affiliates
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; version 2 of the License.
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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA
*/
/*
** print_default.c:
** Print all parameters in a default file that will be given to some program.
**
** Written by Monty
*/
#include <my_global.h>
#include <my_sys.h>
#include <m_string.h>
#include <my_getopt.h>
#include <my_default.h>
#include <mysql_version.h>
#define load_default_groups mysqld_groups
#include <mysqld_default_groups.h>
#undef load_default_groups
my_bool opt_mysqld;
const char *config_file="my"; /* Default config file */
uint verbose= 0, opt_defaults_file_used= 0;
const char *default_dbug_option="d:t:o,/tmp/my_print_defaults.trace";
static struct my_option my_long_options[] =
{
#ifdef DBUG_OFF
{"debug", '#', "This is a non-debug version. Catch this and exit",
0,0, 0, GET_DISABLED, OPT_ARG, 0, 0, 0, 0, 0, 0},
#else
{"debug", '#', "Output debug log", (char**) &default_dbug_option,
(char**) &default_dbug_option, 0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0},
#endif
{"defaults-file", 'c',
"Read this file only, do not read global or per-user config "
"files; should be the first option",
(char**) &config_file, (char*) &config_file, 0, GET_STR, REQUIRED_ARG,
0, 0, 0, 0, 0, 0},
{"defaults-extra-file", 'e',
"Read this file after the global config file and before the config "
"file in the users home directory; should be the first option",
(void *)&my_defaults_extra_file, (void *)&my_defaults_extra_file, 0,
GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
{"defaults-group-suffix", 'g',
"In addition to the given groups, read also groups with this suffix",
(char**) &my_defaults_group_suffix, (char**) &my_defaults_group_suffix,
0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
{"mysqld", 0, "Read the same set of groups that the mysqld binary does.",
&opt_mysqld, &opt_mysqld, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
{"no-defaults", 'n', "Return an empty string (useful for scripts).",
0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
{"help", '?', "Display this help message and exit.",
0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
{"verbose", 'v', "Increase the output level",
0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
{"version", 'V', "Output version information and exit.",
0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}
};
static void cleanup_and_exit(int exit_code) __attribute__ ((noreturn));
static void cleanup_and_exit(int exit_code)
{
my_end(0);
exit(exit_code);
}
static void version()
{
printf("%s Ver 1.7 for %s at %s\n",my_progname,SYSTEM_TYPE, MACHINE_TYPE);
}
static void usage() __attribute__ ((noreturn));
static void usage()
{
version();
puts("This software comes with ABSOLUTELY NO WARRANTY. This is free software,\nand you are welcome to modify and redistribute it under the GPL license\n");
puts("Displays the options from option groups of option files, which is useful to see which options a particular tool will use");
printf("Usage: %s [OPTIONS] [groups]\n", my_progname);
my_print_help(my_long_options);
my_print_default_files(config_file);
my_print_variables(my_long_options);
printf("\nExample usage:\n%s --defaults-file=example.cnf client client-server mysql\n", my_progname);
cleanup_and_exit(0);
}
static my_bool
get_one_option(const struct my_option *opt __attribute__((unused)),
const char *argument __attribute__((unused)),
const char *filename __attribute__((unused)))
{
switch (opt->id) {
case 'c':
opt_defaults_file_used= 1;
break;
case 'n':
cleanup_and_exit(0);
case 'I':
case '?':
usage();
case 'v':
verbose++;
break;
case 'V':
version();
/* fall through */
case '#':
DBUG_PUSH(argument ? argument : default_dbug_option);
break;
}
return 0;
}
static int get_options(int *argc,char ***argv)
{
int ho_error;
if ((ho_error=handle_options(argc, argv, my_long_options, get_one_option)))
exit(ho_error);
return 0;
}
static char *make_args(const char *s1, const char *s2)
{
char *s= malloc(strlen(s1) + strlen(s2) + 1);
strmov(strmov(s, s1), s2);
return s;
}
int main(int argc, char **argv)
{
int count= 0, error, no_defaults= 0;
char **load_default_groups= 0, *tmp_arguments[6];
char **argument, **arguments, **org_argv;
int nargs, i= 0;
MY_INIT(argv[0]);
org_argv= argv;
if (*argv && !strcmp(*argv, "--no-defaults"))
{
argv++;
++count;
no_defaults= 1;
}
/* Copy program name and --no-defaults if present*/
arguments= tmp_arguments;
memcpy((char*) arguments, (char*) org_argv, (++count)*sizeof(*org_argv));
arguments[count]= 0;
/* Check out the args */
if (get_options(&argc,&argv))
cleanup_and_exit(1);
if (!no_defaults)
{
if (opt_defaults_file_used)
arguments[count++]= make_args("--defaults-file=", config_file);
if (my_defaults_extra_file)
arguments[count++]= make_args("--defaults-extra-file=",
my_defaults_extra_file);
if (my_defaults_group_suffix)
arguments[count++]= make_args("--defaults-group-suffix=",
my_defaults_group_suffix);
arguments[count]= 0;
}
nargs= argc + 1;
if (opt_mysqld)
nargs+= array_elements(mysqld_groups);
if (nargs < 2)
usage();
load_default_groups=(char**) my_malloc(PSI_NOT_INSTRUMENTED,
nargs*sizeof(char*), MYF(MY_WME));
if (!load_default_groups)
exit(1);
if (opt_mysqld)
{
for (; mysqld_groups[i]; i++)
load_default_groups[i]= (char*) mysqld_groups[i];
}
memcpy(load_default_groups + i, argv, (argc + 1) * sizeof(*argv));
if ((error= load_defaults(config_file, (const char **) load_default_groups,
&count, &arguments)))
{
my_end(0);
if (error == 4)
return 0;
if (verbose && opt_defaults_file_used)
{
if (error == 1)
fprintf(stderr, "WARNING: Defaults file '%s' not found!\n",
config_file);
/* This error is not available now. For the future */
if (error == 2)
fprintf(stderr, "WARNING: Defaults file '%s' is not a regular file!\n",
config_file);
}
return 2;
}
for (argument= arguments+1 ; *argument ; argument++)
puts(*argument);
my_free(load_default_groups);
free_defaults(arguments);
my_end(0);
exit(0);
}
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