commit ecfbb1d42fbd289d9c48e25806b7b377bf93acd2
from: Omar Polo <op@omarpolo.com>
date: Sat Aug 14 19:34:10 2021 UTC

add autosave timer for the session

This is achieved by calling `autosave_hook' in interesting places,
like new_tab or free_tab.  It'll set up a timer to later persist the
session.

This is particularly useful to avoid loosing tabs on the event of a
crash or unexpected system halt, or other similar event.

commit - 5ffaef7f71a51fd298f3f4138e382f06b05e6543
commit + ecfbb1d42fbd289d9c48e25806b7b377bf93acd2
blob - ab2dca1d89b75270959d211cc8b908fce094c895
blob + d9482f85fce0082d15897fadc13ceef873eefc08
--- defaults.c
+++ defaults.c
@@ -28,6 +28,7 @@
 
 char *new_tab_url = NULL;
 
+int autosave = 20;
 int dont_wrap_pre = 0;
 int emojify_link = 1;
 int enable_colors = 1;
@@ -490,6 +491,8 @@ config_setvari(const char *var, int val)
 		emojify_link = !!val;
 	} else if (!strcmp(var, "set-title")) {
 		set_title = !!val;
+	} else if (!strcmp(var, "autosave")) {
+		autosave = val;
 	} else {
 		return 0;
 	}
blob - 8f9809f8b6c30ab5eac20e52cd6961288a4af83c
blob + 3bb7bee9fa10b99fdc77684477d6c89353acc874
--- defaults.h
+++ defaults.h
@@ -19,6 +19,7 @@
 
 extern char	*new_tab_url;
 
+extern int	 autosave;
 extern int	 dont_wrap_pre;
 extern int	 emojify_link;
 extern int	 enable_colors;
blob - 0d715ad096cce9e10ddbd2e2eaab3528974e72ea
blob + 9aae5b14987ea75fa46c4e7429b368fad0180a0d
--- telescope.c
+++ telescope.c
@@ -43,6 +43,8 @@ static struct option longopts[] = {
 static const char *opts = "Cc:hnT:v";
 
 static struct imsgev	*iev_fs, *iev_net;
+
+static struct event	 autosaveev;
 
 struct tabshead		 tabshead = TAILQ_HEAD_INITIALIZER(tabshead);
 struct proxylist	 proxies = TAILQ_HEAD_INITIALIZER(proxies);
@@ -113,6 +115,7 @@ static int		 make_request(struct tab *, struct get_req
 			     const char *);
 static int		 make_fs_request(struct tab *, int, const char *);
 static int		 do_load_url(struct tab*, const char *, const char *);
+static void		 autosave_timer(int, short, void *);
 static void		 parse_session_line(char *, const char **, uint32_t *);
 static void		 load_last_session(void);
 static pid_t		 start_child(enum telescope_process, const char *, int);
@@ -927,6 +930,8 @@ void
 free_tab(struct tab *tab)
 {
 	stop_tab(tab);
+
+	autosave_hook();
 
 	if (evtimer_pending(&tab->loadingev, NULL))
 		evtimer_del(&tab->loadingev);
@@ -978,6 +983,32 @@ save_session(void)
 	}
 
 	ui_send_fs(IMSG_SESSION_END, 0, NULL, 0);
+}
+
+static void
+autosave_timer(int fd, short event, void *data)
+{
+	save_session();
+}
+
+/*
+ * Function to be called in "interesting" places where we may want to
+ * schedule an autosave (like on new tab or before loading an url.)
+ */
+void
+autosave_hook(void)
+{
+	struct timeval tv;
+
+	if (autosave <= 0)
+		return;
+
+	if (!evtimer_pending(&autosaveev, NULL)) {
+		tv.tv_sec = autosave;
+		tv.tv_usec = 0;
+
+		evtimer_add(&autosaveev, &tv);
+	}
 }
 
 /*
@@ -1236,6 +1267,9 @@ main(int argc, char * const *argv)
 
 	event_init();
 
+	/* Setup event handler for the autosave */
+	evtimer_set(&autosaveev, autosave_timer, NULL);
+
 	/* Setup event handlers for pipes to fs/net */
 	iev_fs->events = EV_READ;
 	event_set(&iev_fs->ev, iev_fs->ibuf.fd, iev_fs->events,
blob - 7a2377bbac51378de25faa9e84af9711308db2e4
blob + 756a7092d2927d064b0bb4d658654e5f5159672b
--- telescope.h
+++ telescope.h
@@ -328,6 +328,7 @@ void		 free_tab(struct tab *);
 void		 stop_tab(struct tab*);
 void		 add_to_bookmarks(const char*);
 void		 save_session(void);
+void		 autosave_hook(void);
 
 /* tofu.c */
 void			 tofu_init(struct ohash*, unsigned int, ptrdiff_t);
blob - 5b7da6d1130b55dc57f37640fa9daa167fbbef5a
blob + 8276391fde6c4cacf478669e857d4cfd80ffbc29
--- ui.c
+++ ui.c
@@ -956,6 +956,8 @@ load_url_in_tab(struct tab *tab, const char *url, cons
 		load_url(tab, url, base, nohist);
 		return;
 	}
+
+	autosave_hook();
 
 	message("Loading %s...", url);
 	start_loading_anim(tab);
@@ -984,6 +986,8 @@ struct tab *
 new_tab(const char *url, const char *base, struct tab *after)
 {
 	struct tab	*tab;
+
+	autosave_hook();
 
 	if ((tab = calloc(1, sizeof(*tab))) == NULL) {
 		event_loopbreak();