From d6c25f60406596d84900aa6ac012bf8ce111d57c Mon Sep 17 00:00:00 2001
From: xrs <xrs@mail36.net>
Date: Sat, 22 Jun 2019 22:57:55 +0200
Subject: [PATCH] add flag for exlusive options as program agruments

---
 src/include/gnunet_getopt_lib.h |  7 ++++++-
 src/util/getopt.c               | 12 +++++++++++-
 src/util/getopt_helpers.c       |  1 +
 3 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/src/include/gnunet_getopt_lib.h b/src/include/gnunet_getopt_lib.h
index ddeeffef4..17e36d889 100644
--- a/src/include/gnunet_getopt_lib.h
+++ b/src/include/gnunet_getopt_lib.h
@@ -135,6 +135,11 @@ struct GNUNET_GETOPT_CommandLineOption
    */
   int option_mandatory;
 
+  /**
+   * Is the option exclusive?
+   */
+  int option_exclusive;
+
   /**
    * Handler for the option.
    */
@@ -424,7 +429,7 @@ GNUNET_GETOPT_option_mandatory (struct GNUNET_GETOPT_CommandLineOption opt);
  * Marker for the end of the list of options.
  */
 #define GNUNET_GETOPT_OPTION_END \
-  { '\0', NULL, NULL, NULL, 0, 0, NULL, NULL, NULL }
+  { '\0', NULL, NULL, NULL, 0, 0, 0, NULL, NULL, NULL }
 
 
 /**
diff --git a/src/util/getopt.c b/src/util/getopt.c
index 5e8571ee5..44f6dcda2 100644
--- a/src/util/getopt.c
+++ b/src/util/getopt.c
@@ -954,7 +954,16 @@ GNUNET_GETOPT_run (const char *binaryOptions,
 
   if (GNUNET_YES == cont)
   {
-    for (count = 0; NULL != allOptions[count].name; count++)
+    for (count = 0; NULL != allOptions[count].name; count++) 
+    {
+      if (allOptions[count].option_exclusive)
+      {
+        FPRINTF (stderr,
+                 _("Option `%s' can't be used with other options.\n"),
+                 allOptions[count].name);
+        cont = GNUNET_SYSERR;
+      }
+
       if ( (0 == seen[count]) &&
            (allOptions[count].option_mandatory) )
       {
@@ -963,6 +972,7 @@ GNUNET_GETOPT_run (const char *binaryOptions,
                  allOptions[count].name);
         cont = GNUNET_SYSERR;
       }
+    }
   }
   GNUNET_free (seen);
 
diff --git a/src/util/getopt_helpers.c b/src/util/getopt_helpers.c
index 77032e501..d6ba85733 100644
--- a/src/util/getopt_helpers.c
+++ b/src/util/getopt_helpers.c
@@ -68,6 +68,7 @@ GNUNET_GETOPT_option_version (const char *version)
     .shortName =  'v',
     .name = "version",
     .description = gettext_noop("print the version number"),
+    .option_exclusive = 1,
     .processor = &print_version,
     .scls = (void *) version
   };
-- 
2.25.1