text: /*
     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);
  }
  