sfeed_curses

commit 25a4b5688a2dccbf06bd7e2ac11380d4265e67c2
parent a20f6ab57a02d153411c47c522ba4fe1346a4dd5
Author: Hiltjo Posthuma <hiltjo@codemadness.org>
Date:   Sat, 12 Sep 2020 19:18:23 +0200

line editor: improve signal handling, support SIGINT, SIGTERM

* Allow SIGINT (^C) to cancel the prompt.
* Handle SIGTERM to exit the prompt and program directly, instead of "ignoring"
  it and handling it after the prompt.
* Handling SIGWINCH while the line editor is open remains the same (the prompt
  stays open and works, but the window is not resized).

Diffstat:
M
sfeed_curses.c
 | 
12
+++++++++++-

1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/sfeed_curses.c b/sfeed_curses.c
@@ -961,7 +961,17 @@ lineeditor(void)
 		} else if (ch >= ' ') {
 			write(1, &ch, 1);
 		} else if (ch < 0) {
-			continue; /* process signals later */
+			switch (sigstate) {
+			case 0:
+			case SIGWINCH:
+				continue; /* process signals later */
+			case SIGINT:
+				sigstate = 0; /* exit prompt, do not quit */
+			case SIGTERM:
+				break; /* exit prompt and quit */
+			}
+			free(input);
+			return NULL;
 		}
 		input[nchars++] = ch;
 	}