sfeed_curses

commit c4cb8053a0fffcd4f4ef2a9f333539e06fa872ad
parent 6538364ec9dfb0cebc5ee1e886b9138b7f879cd8
Author: Hiltjo Posthuma <hiltjo@codemadness.org>
Date:   Wed, 15 Jul 2020 17:25:01 +0200

handle SIGHUP for reloading all feeds and document all handled signals

SIGHUP can be useful for automated (cronjob) scripts to update the current open
window.

Diffstat:
M
sfeed_curses.1
 | 
13
+++++++++++--
M
sfeed_curses.c
 | 
28
+++++++++++++++++++++-------

2 files changed, 32 insertions(+), 9 deletions(-)
diff --git a/sfeed_curses.1 b/sfeed_curses.1
@@ -1,4 +1,4 @@
-.Dd July 12, 2020
+.Dd July 15, 2020
 .Dt SFEED_CURSES 1
 .Os
 .Sh NAME
@@ -96,7 +96,7 @@ The used command to yank the url is "cut -f 3 | xclip -r".
 Pipe the TAB-Separated Value for yanking the enclosure.
 The used command to yank the enclosure is "cut -f 8 | xclip -r".
 .It q, EOF
-quit
+Quit
 .El
 .Sh MOUSE ACTIONS
 When mouse-mode is enabled the below actions are available.
@@ -112,6 +112,15 @@ Scroll 1 page up.
 .It scroll down
 Scroll 1 page down.
 .El
+.Sh SIGNALS
+.Bl -tag -width Ds
+.It SIGHUP
+Reload all feed files as specified on startup when not read from stdin.
+.It SIGINT, SIGTERM
+Quit
+.It SIGWINCH
+Resize the pane dimensions relative to the terminal size.
+.El
 .Sh ENVIRONMENT VARIABLES
 .Bl -tag -width Ds
 .It Ev SFEED_PIPER
diff --git a/sfeed_curses.c b/sfeed_curses.c
@@ -499,6 +499,7 @@ init(void)
 	sigemptyset(&sa.sa_mask);
 	sa.sa_flags = SA_RESTART; /* require BSD signal semantics */
 	sa.sa_handler = sighandler;
+	sigaction(SIGHUP, &sa, NULL);
 	sigaction(SIGINT, &sa, NULL);
 	sigaction(SIGTERM, &sa, NULL);
 	sigaction(SIGWINCH, &sa, NULL);
@@ -1187,6 +1188,20 @@ feeds_load(struct feed *feeds, size_t nfeeds)
 }
 
 void
+feeds_reloadall(void)
+{
+	off_t pos;
+
+	pos = panes[PaneItems].pos; /* store numeric position */
+	feeds_load(feeds, nfeeds);
+	/* restore numeric position */
+	pane_setpos(&panes[PaneItems], pos);
+	updatesidebar(onlynew);
+	updategeom();
+	updatetitle();
+}
+
+void
 updatesidebar(int onlynew)
 {
 	struct pane *p;
@@ -1228,6 +1243,7 @@ void
 sighandler(int signo)
 {
 	switch (signo) {
+	case SIGHUP:
 	case SIGINT:
 	case SIGTERM:
 	case SIGWINCH:
@@ -1659,13 +1675,7 @@ nextpage:
 			alldirty();
 			break;
 		case 'R': /* reload all files */
-			off = panes[PaneItems].pos; /* store numeric position */
-			feeds_load(feeds, nfeeds);
-			/* restore numeric position */
-			pane_setpos(&panes[PaneItems], off);
-			updatesidebar(onlynew);
-			updategeom();
-			updatetitle();
+			feeds_reloadall();
 			break;
 		case 'a': /* attachment */
 		case 'e': /* enclosure */
@@ -1737,6 +1747,10 @@ event:
 
 		/* handle last signal */
 		switch (sigstate) {
+		case SIGHUP:
+			feeds_reloadall();
+			sigstate = 0;
+			break;
 		case SIGINT:
 		case SIGTERM:
 			cleanup();