parseopt.c
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2016 Free Software Foundation, Inc.
GNU Mailutils 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, or (at your option)
any later version.
GNU Mailutils 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 GNU Mailutils. If not, see <http://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <mailutils/mailutils.h>
#include <mailutils/opt.h>
char *file_name;
char *opt_value = "initial";
char *find_value;
int jobs = 0;
int x_option;
int a_option;
int d_option;
struct mu_option group_a[] = {
MU_OPTION_GROUP("Group A"),
{ "file", 'f', "FILE", MU_OPTION_DEFAULT,
"set file name",
mu_c_string, &file_name
},
{ "optional", 'o', "FILE", MU_OPTION_ARG_OPTIONAL,
"optional argument",
mu_c_string, &opt_value },
{ NULL, 'x', NULL, MU_OPTION_DEFAULT,
"short-only option",
mu_c_incr, &x_option },
{ "all", 'a', NULL, MU_OPTION_DEFAULT,
"no arguments to this one",
mu_c_bool, &a_option },
MU_OPTION_END
};
struct mu_option group_b[] = {
MU_OPTION_GROUP("Group B"),
{ "debug", 'd', NULL, MU_OPTION_DEFAULT,
"another option",
mu_c_incr, &d_option },
{ "verbose", 'v', NULL, MU_OPTION_ALIAS },
{ "find", 'F', "VALUE", MU_OPTION_DEFAULT,
"find VALUE",
mu_c_string, &find_value },
{ "jobs", 'j', "N", MU_OPTION_DEFAULT,
"sets numeric value",
mu_c_int, &jobs },
MU_OPTION_END
};
struct mu_option *optv[] = { group_a, group_b, NULL };
#define S(s) ((s)?(s):"(null)")
int
main (int argc, char *argv[])
{
struct mu_parseopt po;
int rc;
int i;
int flags = MU_PARSEOPT_DEFAULT;
mu_stdstream_setup (MU_STDSTREAM_RESET_NONE);
if (getenv ("MU_PARSEOPT_DEFAULT"))
flags = MU_PARSEOPT_DEFAULT;
else
{
if (getenv ("MU_PARSEOPT_IN_ORDER"))
flags |= MU_PARSEOPT_IN_ORDER;
if (getenv ("MU_PARSEOPT_IGNORE_ERRORS"))
flags |= MU_PARSEOPT_IGNORE_ERRORS;
if (getenv ("MU_PARSEOPT_IN_ORDER"))
flags |= MU_PARSEOPT_IN_ORDER;
if (getenv ("MU_PARSEOPT_NO_ERREXIT"))
flags |= MU_PARSEOPT_NO_ERREXIT;
if (getenv ("MU_PARSEOPT_NO_STDOPT"))
flags |= MU_PARSEOPT_NO_STDOPT;
}
rc = mu_parseopt (&po, argc, argv, optv, flags);
printf ("rc=%d\n", rc);
mu_parseopt_apply (&po);
argc -= po.po_arg_start;
argv += po.po_arg_start;
mu_parseopt_free (&po);
printf ("file_name=%s\n", S(file_name));
printf ("opt_value=%s\n", S(opt_value));
printf ("x_option=%d\n", x_option);
printf ("a_option=%d\n", a_option);
printf ("find_value=%s\n", S(find_value));
printf ("d_option=%d\n", d_option);
printf ("jobs=%d\n", jobs);
printf ("argv:\n");
for (i = 0; i < argc; i++)
{
printf ("%d: %s\n", i, argv[i]);
}
return 0;
}