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-rw-r--r--notmuch.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/notmuch.c b/notmuch.c
index 4ff66e30..9516dfb7 100644
--- a/notmuch.c
+++ b/notmuch.c
@@ -82,6 +82,8 @@ static command_t commands[] = {
"This message, or more detailed help for the named command." }
};
+int notmuch_format_version;
+
static void
usage (FILE *out)
{
@@ -109,6 +111,33 @@ usage (FILE *out)
"and \"notmuch help search-terms\" for the common search-terms syntax.\n\n");
}
+void
+notmuch_exit_if_unsupported_format (void)
+{
+ if (notmuch_format_version > NOTMUCH_FORMAT_CUR) {
+ fprintf (stderr, "\
+A caller requested output format version %d, but the installed notmuch\n\
+CLI only supports up to format version %d. You may need to upgrade your\n\
+notmuch CLI.\n",
+ notmuch_format_version, NOTMUCH_FORMAT_CUR);
+ exit (NOTMUCH_EXIT_FORMAT_TOO_NEW);
+ } else if (notmuch_format_version < NOTMUCH_FORMAT_MIN) {
+ fprintf (stderr, "\
+A caller requested output format version %d, which is no longer supported\n\
+by the notmuch CLI (it requires at least version %d). You may need to\n\
+upgrade your notmuch front-end.\n",
+ notmuch_format_version, NOTMUCH_FORMAT_MIN);
+ exit (NOTMUCH_EXIT_FORMAT_TOO_OLD);
+ } else if (notmuch_format_version != NOTMUCH_FORMAT_CUR) {
+ /* Warn about old version requests so compatibility issues are
+ * less likely when we drop support for a deprecated format
+ * versions. */
+ fprintf (stderr, "\
+A caller requested deprecated output format version %d, which may not\n\
+be supported in the future.\n", notmuch_format_version);
+ }
+}
+
static void
exec_man (const char *page)
{
@@ -242,6 +271,9 @@ main (int argc, char *argv[])
g_mime_init (0);
g_type_init ();
+ /* Globally default to the current output format version. */
+ notmuch_format_version = NOTMUCH_FORMAT_CUR;
+
if (argc == 1)
return notmuch (local);