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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 1999-2003, 2005-2007, 2010-2012 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/>. */
/* Parse traditional MH options. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <mh_getopt.h>
#include <mailutils/io.h>
static int mh_optind = 1;
static char *mh_optarg;
static char *mh_optptr;
void (*mh_help_hook) ();
int
mh_getopt (int argc, char **argv, struct mh_option *mh_opt, const char *doc)
{
struct mh_option *p;
int optlen;
if (mh_optind >= argc || argv[mh_optind] == NULL)
return EOF;
mh_optptr = argv[mh_optind];
if (mh_optptr[0] == '+')
{
mh_optarg = mh_optptr + 1;
mh_optind++;
return '+';
}
if (mh_optptr[0] != '-' || mh_optptr[1] == '-')
{
mh_optind++;
return 0;
}
if (strcmp (mh_optptr, "-version") == 0)
mu_asprintf (&argv[mh_optind], "--version");
else
{
optlen = strlen (mh_optptr+1);
for (p = mh_opt; p->opt; p++)
{
if ((p->match_len <= optlen
&& memcmp (mh_optptr+1, p->opt, optlen) == 0)
|| (p->flags == MH_OPT_BOOL
&& optlen > 2
&& memcmp (mh_optptr+1, "no", 2) == 0
&& strlen (p->opt) >= optlen-2
&& memcmp (mh_optptr+3, p->opt, optlen-2) == 0))
break;
}
if (p->opt)
{
char *longopt = p->opt;
switch (p->flags)
{
case MH_OPT_BOOL:
if (memcmp (mh_optptr+1, "no", 2) == 0)
mh_optarg = "no";
else
mh_optarg = "yes";
mu_asprintf (&argv[mh_optind], "--%s=%s", longopt, mh_optarg);
break;
case MH_OPT_ARG:
mu_asprintf (&argv[mh_optind], "--%s", longopt);
mh_optarg = argv[++mh_optind];
break;
default:
mu_asprintf (&argv[mh_optind], "--%s", longopt);
mh_optarg = NULL;
}
mh_optind++;
return 1;
}
else if (!strcmp (mh_optptr+1, "help"))
{
mh_help (mh_opt, doc);
exit (1);
}
else
mh_optind++;
}
return '?';
}
void
mh_argv_preproc (int argc, char **argv, struct mh_argp_data *data)
{
mh_optind = 1;
while (mh_getopt (argc, argv, data->mh_option, data->doc) != EOF)
;
}
void
mh_help (struct mh_option *mh_opt, const char *doc)
{
struct mh_option *p;
printf (_("Compatibility syntax:\n"));
printf (_("%s [switches] %s\n"), mu_program_name, doc);
printf (_(" switches are:\n"));
for (p = mh_opt; p->opt; p++)
{
int len = strlen (p->opt);
printf (" -");
if (p->flags == MH_OPT_BOOL)
printf ("[no]");
if (len > p->match_len)
printf ("(%*.*s)%s",
(int) p->match_len, (int) p->match_len, p->opt,
p->opt + p->match_len);
else
printf ("%s", p->opt);
if (p->flags == MH_OPT_ARG)
printf (" %s", p->arg);
printf ("\n");
}
if (mh_help_hook)
mh_help_hook ();
printf (" -help\n");
printf (" -version\n");
printf (_("\nPlease use GNU long options instead.\n"
"Run %s --help for more info on these.\n"),
mu_program_name);
}
static int
optcmp (const void *a, const void *b)
{
struct mh_option const *opta = a, *optb = b;
return strcmp (opta->opt, optb->opt);
}
void
mh_option_init (struct mh_option *opt)
{
size_t count, i;
/* Count number of elements and initialize minimum abbreviation
lengths to 1. */
for (count = 0; opt[count].opt; count++)
opt[count].match_len = 1;
/* Sort them alphabetically */
qsort (opt, count, sizeof (opt[0]), optcmp);
/* Determine minimum abbreviations */
for (i = 0; i < count; i++)
{
const char *sample = opt[i].opt;
size_t sample_len = strlen (sample);
size_t minlen = opt[i].match_len;
size_t j;
for (j = i + 1; j < count; j++)
{
size_t len = strlen (opt[j].opt);
if (len >= minlen && memcmp (opt[j].opt, sample, minlen) == 0)
do
{
minlen++;
if (minlen <= strlen (opt[j].opt))
opt[j].match_len = minlen;
if (minlen == sample_len)
break;
}
while (len >= minlen && memcmp (opt[j].opt, sample, minlen) == 0);
else if (opt[j].opt[0] == sample[0])
opt[j].match_len = minlen;
else
break;
}
if (minlen <= sample_len)
opt[i].match_len = minlen;
}
}
void
mh_opt_notimpl (const char *name)
{
mu_error (_("option is not yet implemented: %s"), name);
exit (1);
}
void
mh_opt_notimpl_warning (const char *name)
{
mu_error (_("ignoring not implemented option %s"), name);
}
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