lib: initial hooks implementation

Author: Duncaen

include/xbps_api_impl.h

@@ -128,4 +128,10 @@ struct xbps_repo HIDDEN *xbps_regget_repo(struct xbps_handle *,
 		const char *);
 int HIDDEN xbps_conf_init(struct xbps_handle *);
 
+struct xbps_hooks;
+struct xbps_hooks *xbps_hooks_init(struct xbps_handle *xhp);
+int xbps_hooks_pre_transaction(struct xbps_handle *xhp);
+int xbps_hooks_post_transaction(struct xbps_handle *xhp);
+void xbps_hooks_free(struct xbps_hooks *hooks);
+
 #endif /* !_XBPS_API_IMPL_H_ */

lib/Makefile

@@ -58,7 +58,7 @@ OBJS += plist_remove.o plist_fetch.o util.o util_path.o util_hash.o
 OBJS += repo.o repo_sync.o
 OBJS += rpool.o cb_util.o proplib_wrapper.o
 OBJS += package_alternatives.o
-OBJS += conf.o log.o
+OBJS += conf.o log.o hooks.o
 OBJS += $(EXTOBJS) $(COMPAT_OBJS)
 # unnecessary unless pkgdb format changes
 # OBJS += pkgdb_conversion.o