1 files changed, 46 insertions, 0 deletions
diff --git a/src/lib-storage/mail-search-register.h b/src/lib-storage/mail-search-register.h
new file mode 100644
index 0000000..16e9427
--- /dev/null
+++ b/src/lib-storage/mail-search-register.h
@@ -0,0 +1,46 @@
+#ifndef MAIL_SEARCH_REGISTER_H
+#define MAIL_SEARCH_REGISTER_H
+
+struct mail_search_arg;
+struct mail_search_build_context;
+
+struct mail_search_register_arg {
+	const char *key;
+
+	/* returns parsed arg or NULL if error. error message is set to ctx. */
+	struct mail_search_arg *
+		(*build)(struct mail_search_build_context *ctx);
+};
+
+typedef struct mail_search_arg *
+mail_search_register_fallback_t(struct mail_search_build_context *ctx,
+				const char *key);
+
+struct mail_search_register *mail_search_register_init(void);
+void mail_search_register_deinit(struct mail_search_register **reg);
+
+void mail_search_register_add(struct mail_search_register *reg,
+			      const struct mail_search_register_arg *arg,
+			      unsigned int count);
+/* Register a fallback handler. It's responsible for giving also the
+   "unknown key" error. */
+void mail_search_register_fallback(struct mail_search_register *reg,
+				   mail_search_register_fallback_t *fallback);
+
+/* Return all registered args sorted. */
+const struct mail_search_register_arg *
+mail_search_register_get(struct mail_search_register *reg,
+			 unsigned int *count_r);
+
+/* Find key's registered arg, or NULL if not found. */
+const struct mail_search_register_arg *
+mail_search_register_find(struct mail_search_register *reg, const char *key);
+/* Get registered fallback arg. Returns FALSE if fallback hasn't been
+   registered. */
+bool mail_search_register_get_fallback(struct mail_search_register *reg,
+				       mail_search_register_fallback_t **fallback_r);
+
+struct mail_search_register *mail_search_register_get_imap(void);
+struct mail_search_register *mail_search_register_get_human(void);
+
+#endif