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authorSergey Poznyakoff <gray@gnu.org.ua>2001-09-14 12:14:36 +0000
committerSergey Poznyakoff <gray@gnu.org.ua>2001-09-14 12:14:36 +0000
commit98a5981ef013545a0b0bf5b1bc8483438f1bdf43 (patch)
tree9f6a97a864d3bc89556ecda4a3cf96830a41cea3 /mh/mh_getopt.c
parent59443de195637d0894ae89575419feeac9502564 (diff)
downloadmailutils-98a5981ef013545a0b0bf5b1bc8483438f1bdf43.tar.gz
mailutils-98a5981ef013545a0b0bf5b1bc8483438f1bdf43.tar.bz2
MH-style options parsing.
Diffstat (limited to 'mh/mh_getopt.c')
-rw-r--r--mh/mh_getopt.c114
1 files changed, 114 insertions, 0 deletions
diff --git a/mh/mh_getopt.c b/mh/mh_getopt.c
new file mode 100644
index 000000000..626821232
--- /dev/null
+++ b/mh/mh_getopt.c
@@ -0,0 +1,114 @@
+/* GNU mailutils - a suite of utilities for electronic mail
+ Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
+
+ 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, 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/* Parse traditional MH options. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <mh_getopt.h>
+#include <getopt.h>
+
+int mh_optind = 1;
+char *mh_optarg;
+char *mh_optptr;
+
+int
+mh_getopt (int argc, char **argv, struct mh_option *mh_opt)
+{
+ 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] != '-')
+ return EOF;
+
+ optlen = strlen (mh_optptr+1);
+ for (p = mh_opt; p->opt; p++)
+ {
+ if (p->match_len <= optlen
+ && strlen (p->opt) >= optlen
+ && (memcmp (mh_optptr+1, p->opt, optlen) == 0
+ || (p->flags == MH_OPT_BOOL
+ && optlen > 2
+ && memcmp (mh_optptr+3, p->opt, optlen-2) == 0)))
+ break;
+ }
+
+ if (p->opt)
+ {
+ switch (p->flags)
+ {
+ case MH_OPT_BOOL:
+ if (memcmp (mh_optptr+1, "no", 2) == 0)
+ mh_optarg = "no";
+ else
+ mh_optarg = "yes";
+ break;
+
+ case MH_OPT_ARG:
+ mh_optarg = argv[++mh_optind];
+ break;
+
+ default:
+ mh_optarg = NULL;
+ }
+ mh_optind++;
+ return p->key;
+ }
+ else if (!strcmp (mh_optptr+1, "help"))
+ {
+ mh_help (mh_opt);
+ exit (1);
+ }
+ return '?';
+}
+
+void
+mh_help (struct mh_option *mh_opt)
+{
+ struct mh_option *p;
+
+ printf ("Compatibility syntax:\n");
+ printf ("%s [+folder] [msgs] [switches]\n", program_invocation_short_name);
+ 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",
+ p->match_len, 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");
+ }
+ printf (" -help\n");
+}

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