From c7bfddf42fb84e6d1cf1847f02b5e93cad9c74bf Mon Sep 17 00:00:00 2001
From: djm <djm>
Date: Thu, 16 Jun 2005 03:18:04 +0000
Subject:  - (djm) OpenBSD CVS Sync    - jaredy@cvs.openbsd.org 2005/06/07
 13:25:23      [progressmeter.c]      catch SIGWINCH and resize progress meter
 accordingly; ok markus dtucker

---
 progressmeter.c | 47 ++++++++++++++++++++++++++++++++++-------------
 1 file changed, 34 insertions(+), 13 deletions(-)

(limited to 'progressmeter.c')

diff --git a/progressmeter.c b/progressmeter.c
index febe9aad..3cda0906 100644
--- a/progressmeter.c
+++ b/progressmeter.c
@@ -23,7 +23,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: progressmeter.c,v 1.23 2005/04/28 10:17:56 moritz Exp $");
+RCSID("$OpenBSD: progressmeter.c,v 1.24 2005/06/07 13:25:23 jaredy Exp $");
 
 #include "progressmeter.h"
 #include "atomicio.h"
@@ -42,6 +42,10 @@ static int can_output(void);
 static void format_size(char *, int, off_t);
 static void format_rate(char *, int, off_t);
 
+/* window resizing */
+static void sig_winch(int);
+static void setscreensize(void);
+
 /* updates the progressmeter to reflect the current state of the transfer */
 void refresh_progress_meter(void);
 
@@ -57,6 +61,7 @@ static volatile off_t *counter;	/* progress counter */
 static long stalled;		/* how long we have been stalled */
 static int bytes_per_second;	/* current speed in bytes per second */
 static int win_size;		/* terminal window size */
+static volatile sig_atomic_t win_resized; /* for window resizing */
 
 /* units for format_size */
 static const char unit[] = " KMGT";
@@ -217,6 +222,10 @@ update_progress_meter(int ignore)
 
 	save_errno = errno;
 
+	if (win_resized) {
+		setscreensize();
+		win_resized = 0;
+	}
 	if (can_output())
 		refresh_progress_meter();
 
@@ -228,8 +237,6 @@ update_progress_meter(int ignore)
 void
 start_progress_meter(char *f, off_t filesize, off_t *ctr)
 {
-	struct winsize winsize;
-
 	start = last_update = time(NULL);
 	file = f;
 	end_pos = filesize;
@@ -238,20 +245,12 @@ start_progress_meter(char *f, off_t filesize, off_t *ctr)
 	stalled = 0;
 	bytes_per_second = 0;
 
-	if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &winsize) != -1 &&
-	    winsize.ws_col != 0) {
-		if (winsize.ws_col > MAX_WINSIZE)
-			win_size = MAX_WINSIZE;
-		else
-			win_size = winsize.ws_col;
-	} else
-		win_size = DEFAULT_WINSIZE;
-	win_size += 1;					/* trailing \0 */
-
+	setscreensize();
 	if (can_output())
 		refresh_progress_meter();
 
 	signal(SIGALRM, update_progress_meter);
+	signal(SIGWINCH, sig_winch);
 	alarm(UPDATE_INTERVAL);
 }
 
@@ -269,3 +268,25 @@ stop_progress_meter(void)
 
 	atomicio(vwrite, STDOUT_FILENO, "\n", 1);
 }
+
+static void
+sig_winch(int sig)
+{
+	win_resized = 1;
+}
+
+static void
+setscreensize(void)
+{
+	struct winsize winsize;
+
+	if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &winsize) != -1 &&
+	    winsize.ws_col != 0) {
+		if (winsize.ws_col > MAX_WINSIZE)
+			win_size = MAX_WINSIZE;
+		else
+			win_size = winsize.ws_col;
+	} else
+		win_size = DEFAULT_WINSIZE;
+	win_size += 1;					/* trailing \0 */
+}
-- 
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