str[strlen(str)-1] = '\0';
}
+/* Exit status code indicating the requested format version is too old
+ * (support for that version has been dropped). CLI code should use
+ * notmuch_exit_if_unsupported_format rather than directly exiting
+ * with this code.
+ */
+#define NOTMUCH_EXIT_FORMAT_TOO_OLD 20
+/* Exit status code indicating the requested format version is newer
+ * than the version supported by the CLI. CLI code should use
+ * notmuch_exit_if_unsupported_format rather than directly exiting
+ * with this code.
+ */
+#define NOTMUCH_EXIT_FORMAT_TOO_NEW 21
+
+/* The current structured output format version. Requests for format
+ * versions above this will return an error. Backwards-incompatible
+ * changes such as removing map fields, changing the meaning of map
+ * fields, or changing the meanings of list elements should increase
+ * this. New (required) map fields can be added without increasing
+ * this.
+ */
+#define NOTMUCH_FORMAT_CUR 1
+/* The minimum supported structured output format version. Requests
+ * for format versions below this will return an error. */
+#define NOTMUCH_FORMAT_MIN 1
+
+/* The output format version requested by the caller on the command
+ * line. If no format version is requested, this will be set to
+ * NOTMUCH_FORMAT_CUR. Even though the command-line option is
+ * per-command, this is global because commands can share structured
+ * output code.
+ */
+extern int notmuch_format_version;
+
+/* Commands that support structured output should support the
+ * following argument
+ * { NOTMUCH_OPT_INT, ¬much_format_version, "format-version", 0, 0 }
+ * and should invoke notmuch_exit_if_unsupported_format to check the
+ * requested version. If notmuch_format_version is outside the
+ * supported range, this will print a detailed diagnostic message for
+ * the user and exit with NOTMUCH_EXIT_FORMAT_TOO_{OLD,NEW} to inform
+ * the invoking program of the problem.
+ */
+void
+notmuch_exit_if_unsupported_format (void);
+
notmuch_crypto_context_t *
notmuch_crypto_get_context (notmuch_crypto_t *crypto, const char *protocol);
"This message, or more detailed help for the named command." }
};
+int notmuch_format_version;
+
static void
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)
{
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);