commit c7107cec96c1cb1a0bc0a0fcb5bc341e5464e57e
from: Omar Polo <op@omarpolo.com>
date: Thu Apr 01 09:41:10 2021 UTC

save session and reload it on startup

commit - e49ce157fae23fdb5dac3e093f743b85af2d952f
commit + c7107cec96c1cb1a0bc0a0fcb5bc341e5464e57e
blob - a2bbcc59aef4fc9f0250f5c2f6635843250074fb
blob + ddba9d64c485f3f5ea1b1fcd4dc321eea2624c41
--- fs.c
+++ fs.c
@@ -37,19 +37,28 @@ static void		 handle_get(struct imsg*, size_t);
 static void		 handle_quit(struct imsg*, size_t);
 static void		 handle_bookmark_page(struct imsg*, size_t);
 static void		 handle_save_cert(struct imsg*, size_t);
+static void		 handle_session_start(struct imsg*, size_t);
+static void		 handle_session_tab(struct imsg*, size_t);
+static void		 handle_session_end(struct imsg*, size_t);
 static void		 handle_dispatch_imsg(int, short, void*);
 
 static struct event		 imsgev;
 static struct imsgbuf		*ibuf;
 
+static FILE			*session;
+
 static char	bookmark_file[PATH_MAX];
 static char	known_hosts_file[PATH_MAX];
+static char	session_file[PATH_MAX];
 
 static imsg_handlerfn *handlers[] = {
 	[IMSG_GET] = handle_get,
 	[IMSG_QUIT] = handle_quit,
 	[IMSG_BOOKMARK_PAGE] = handle_bookmark_page,
 	[IMSG_SAVE_CERT] = handle_save_cert,
+	[IMSG_SESSION_START] = handle_session_start,
+	[IMSG_SESSION_TAB] = handle_session_tab,
+	[IMSG_SESSION_END] = handle_session_end,
 };
 
 static void __attribute__((__noreturn__))
@@ -174,6 +183,40 @@ end:
 }
 
 static void
+handle_session_start(struct imsg *imsg, size_t datalen)
+{
+	if (datalen != 0)
+		die();
+
+	if ((session = fopen(session_file, "w")) == NULL)
+		die();
+}
+
+static void
+handle_session_tab(struct imsg *imsg, size_t datalen)
+{
+	if (session == NULL)
+		die();
+
+	if (datalen == 0)
+		die();
+
+	/* skip the NUL-terminator */
+        fwrite(imsg->data, 1, datalen-1, session);
+
+	fprintf(session, "\n");
+}
+
+static void
+handle_session_end(struct imsg *imsg, size_t datalen)
+{
+	if (session == NULL)
+		die();
+	fclose(session);
+	session = NULL;
+}
+
+static void
 handle_dispatch_imsg(int fd, short ev, void *d)
 {
 	struct imsgbuf	*ibuf = d;
@@ -195,6 +238,9 @@ fs_init(void)
 	strlcpy(known_hosts_file, getenv("HOME"), sizeof(known_hosts_file));
 	strlcat(known_hosts_file, "/.telescope/known_hosts", sizeof(known_hosts_file));
 
+	strlcpy(session_file, getenv("HOME"), sizeof(session_file));
+	strlcat(session_file, "/.telescope/session", sizeof(session_file));
+
 	return 1;
 }
 
@@ -276,3 +322,28 @@ load_certs(struct ohash *h)
 	free(line);
 	return ferror(f);
 }
+
+int
+load_last_session(void (*cb)(const char*))
+{
+	char	*nl, *line = NULL;
+	int	 e;
+	size_t	 linesize = 0;
+	ssize_t	 linelen;
+	FILE	*session;
+
+	if ((session = fopen(session_file, "r")) == NULL)
+		return 0;
+
+	while ((linelen = getline(&line, &linesize, session)) != -1) {
+                if ((nl = strchr(line, '\n')) != NULL)
+			*nl = '\0';
+		cb(line);
+	}
+
+	free(line);
+	e = ferror(session);
+	fclose(session);
+
+	return !e;
+}
blob - bdbb0df70436547074fb284a20ded7414f1f21bb
blob + 4df53b9b15288038037f8c6d5a78591df9712e09
--- telescope.c
+++ telescope.c
@@ -424,6 +424,24 @@ void
 add_to_bookmarks(const char *str)
 {
 	imsg_compose(fsibuf, IMSG_BOOKMARK_PAGE, 0, 0, -1, str, strlen(str)+1);
+	imsg_flush(fsibuf);
+}
+
+void
+save_session(void)
+{
+	struct tab *tab;
+
+	imsg_compose(fsibuf, IMSG_SESSION_START, 0, 0, -1, NULL, 0);
+	imsg_flush(fsibuf);
+
+	TAILQ_FOREACH(tab, &tabshead, tabs) {
+		imsg_compose(fsibuf, IMSG_SESSION_TAB, 0, 0, -1,
+		    tab->hist_cur->h, strlen(tab->hist_cur->h)+1);
+		imsg_flush(fsibuf);
+	}
+
+	imsg_compose(fsibuf, IMSG_SESSION_END, 0, 0, -1, NULL, 0);
 	imsg_flush(fsibuf);
 }
 
blob - 50a7cc2dee9be23766864d7cf244a65e06b7363f
blob + f655701a0218a729095cb36427b2c787a3dda7b6
--- telescope.h
+++ telescope.h
@@ -47,6 +47,10 @@ enum imsg_type {
 	IMSG_BOOKMARK_OK,
 	IMSG_SAVE_CERT,
 	IMSG_SAVE_CERT_OK,
+
+	IMSG_SESSION_START,
+	IMSG_SESSION_TAB,
+	IMSG_SESSION_END,
 };
 
 enum line_type {
@@ -190,6 +194,7 @@ struct keymap {
 int		 fs_init(void);
 int		 fs_main(struct imsgbuf*);
 int		 load_certs(struct ohash*);
+int		 load_last_session(void(*)(const char*));
 
 /* gemini.c */
 int		 client_main(struct imsgbuf*);
@@ -241,6 +246,7 @@ int		 load_previous_page(struct tab*);
 int		 load_next_page(struct tab*);
 void		 stop_tab(struct tab*);
 void		 add_to_bookmarks(const char*);
+void		 save_session(void);
 
 /* textplain.c */
 void		 textplain_initparser(struct parser*);
blob - 05ffdd75e9e4b6cd6c5c3808ca18c7f721fcc6b4
blob + c0554c6ea45fbf875d2f309a526aec8be7868885
--- ui.c
+++ ui.c
@@ -147,6 +147,7 @@ static void		 enter_minibuffer(void(*)(void), void(*)(
 static void		 exit_minibuffer(void);
 static void		 switch_to_tab(struct tab*);
 static struct tab	*new_tab(const char*);
+static void		 session_new_tab_cb(const char*);
 static void		 usage(void);
 
 static struct { short meta; int key; uint32_t cp; } thiskey;
@@ -590,6 +591,7 @@ cmd_end_of_buffer(struct window *window)
 static void
 cmd_kill_telescope(struct window *window)
 {
+	save_session();
 	event_loopbreak();
 }
 
@@ -1892,6 +1894,12 @@ new_tab(const char *url)
 
 	load_url_in_tab(tab, url);
 	return tab;
+}
+
+static void
+session_new_tab_cb(const char *url)
+{
+	new_tab(url);
 }
 
 static void
@@ -1976,7 +1984,9 @@ ui_init(int argc, char * const *argv)
 	signal_set(&winchev, SIGWINCH, handle_resize, NULL);
 	signal_add(&winchev, NULL);
 
-	new_tab(url);
+	load_last_session(session_new_tab_cb);
+	if (strcmp(url, NEW_TAB_URL) || TAILQ_EMPTY(&tabshead))
+		new_tab(url);
 
 	return 1;
 }