Add events ALPM_EVENT_HOOK_{START,DONE}

Add events to let frontends know when hooks are being processed (and when it's
done), as that might be useful to update the UI.

Signed-off-by: Olivier Brunel <jjk@jjacky.com>

lib/libalpm/alpm.h

@@ -337,6 +337,16 @@ typedef struct _alpm_siglist_t {
 	alpm_sigresult_t *results;
 } alpm_siglist_t;
 
+
+/*
+ * Hooks
+ */
+
+typedef enum _alpm_hook_when_t {
+	ALPM_HOOK_PRE_TRANSACTION = 1,
+	ALPM_HOOK_POST_TRANSACTION
+} alpm_hook_when_t;
+
 /*
  * Logging facilities
  */
@@ -443,7 +453,11 @@ typedef enum _alpm_event_type_t {
 	ALPM_EVENT_PACNEW_CREATED,
 	/** A .pacsave file was created; See alpm_event_pacsave_created_t for
 	 * arguments */
-	ALPM_EVENT_PACSAVE_CREATED
+	ALPM_EVENT_PACSAVE_CREATED,
+	/** Processing hooks will be started. */
+	ALPM_EVENT_HOOK_START,
+	/** Processing hooks is finished. */
+	ALPM_EVENT_HOOK_DONE
 } alpm_event_type_t;
 
 typedef struct _alpm_event_any_t {
@@ -534,6 +548,13 @@ typedef struct _alpm_event_pacsave_created_t {
 	const char *file;
 } alpm_event_pacsave_created_t;
 
+typedef struct _alpm_event_hook_t {
+	/** Type of event.*/
+	alpm_event_type_t type;
+	/** Type of hooks. */
+	alpm_hook_when_t when;
+} alpm_event_hook_t;
+
 /** Events.
  * This is an union passed to the callback, that allows the frontend to know
  * which type of event was triggered (via type). It is then possible to
@@ -550,6 +571,7 @@ typedef union _alpm_event_t {
 	alpm_event_pkgdownload_t pkgdownload;
 	alpm_event_pacnew_created_t pacnew_created;
 	alpm_event_pacsave_created_t pacsave_created;
+	alpm_event_hook_t hook;
 } alpm_event_t;
 
 /** Event callback. */

lib/libalpm/hook.c

@@ -52,7 +52,7 @@ struct _alpm_hook_t {
 	alpm_list_t *depends;
 	char **cmd;
 	alpm_list_t *matches;
-	enum _alpm_hook_when_t when;
+	alpm_hook_when_t when;
 	int abort_on_fail, needs_targets;
 };
 
@@ -608,8 +608,9 @@ static int _alpm_hook_run_hook(alpm_handle_t *handle, struct _alpm_hook_t *hook)
 	}
 }
 
-int _alpm_hook_run(alpm_handle_t *handle, enum _alpm_hook_when_t when)
+int _alpm_hook_run(alpm_handle_t *handle, alpm_hook_when_t when)
 {
+	alpm_event_hook_t event = { .when = when };
 	alpm_list_t *i, *hooks = NULL, *hooks_triggered = NULL;
 	const char *suffix = ".hook";
 	size_t suflen = strlen(suffix);
@@ -717,6 +718,9 @@ int _alpm_hook_run(alpm_handle_t *handle, enum _alpm_hook_when_t when)
 	}
 
 	if(hooks_triggered != NULL) {
+		event.type = ALPM_EVENT_HOOK_START;
+		EVENT(handle, &event);
+
 		for(i = hooks_triggered; i; i = i->next) {
 			struct _alpm_hook_t *hook = i->data;
 			_alpm_log(handle, ALPM_LOG_DEBUG, "running hook %s\n", hook->name);
@@ -726,6 +730,9 @@ int _alpm_hook_run(alpm_handle_t *handle, enum _alpm_hook_when_t when)
 		}
 
 		alpm_list_free(hooks_triggered);
+
+		event.type = ALPM_EVENT_HOOK_DONE;
+		EVENT(handle, &event);
 	}
 
 cleanup:

lib/libalpm/hook.h

@@ -22,12 +22,7 @@
 
 #include "alpm.h"
 
-enum _alpm_hook_when_t {
-	ALPM_HOOK_PRE_TRANSACTION = 1,
-	ALPM_HOOK_POST_TRANSACTION
-};
-
-int _alpm_hook_run(alpm_handle_t *handle, enum _alpm_hook_when_t when);
+int _alpm_hook_run(alpm_handle_t *handle, alpm_hook_when_t when);
 
 #endif /* _ALPM_HOOK_H */
 

src/pacman/callback.c

@@ -167,6 +167,13 @@ void cb_event(alpm_event_t *event)
 		return;
 	}
 	switch(event->type) {
+		case ALPM_EVENT_HOOK_START:
+			if(event->hook.when == ALPM_HOOK_PRE_TRANSACTION) {
+				colon_printf(_("Running pre-transaction hooks...\n"));
+			} else {
+				colon_printf(_("Running post-transaction hooks...\n"));
+			}
+			break;
 		case ALPM_EVENT_CHECKDEPS_START:
 			printf(_("checking dependencies...\n"));
 			break;
@@ -329,6 +336,7 @@ void cb_event(alpm_event_t *event)
 		case ALPM_EVENT_DISKSPACE_DONE:
 		case ALPM_EVENT_RETRIEVE_DONE:
 		case ALPM_EVENT_RETRIEVE_FAILED:
+		case ALPM_EVENT_HOOK_DONE:
 		/* we can safely ignore those as well */
 		case ALPM_EVENT_PKGDOWNLOAD_START:
 		case ALPM_EVENT_PKGDOWNLOAD_DONE: