catpoint

commit 26221fab523ab770e5882099dcab9793245a047e
parent 579a40724bd2943996bca41b63691b45728ce875
Author: FRIGN <dev@frign.de>
Date:   Sun, 20 Jul 2014 13:19:24 +0200

Add arrow-key-support

Conflicts:
	catpoint.c

Diffstat:
M
catpoint.c
 | 
53
++++++++++++++++++++++-------------------------------

1 file changed, 22 insertions(+), 31 deletions(-)
diff --git a/catpoint.c b/catpoint.c
@@ -17,7 +17,7 @@ struct slide {
 int
 main(int argc, char *argv[])
 {
-	int c, i, fd;
+	int c, i, fd, codekey;
 	struct slide *s;
 	struct stat sb;
 	static struct termios oldterm, newterm;
@@ -51,42 +51,33 @@ main(int argc, char *argv[])
 	tcsetattr(STDIN_FILENO, TCSANOW, &newterm);
 	printf("\033[?25l"); /* hide cursor */
 
-	/* start */
-	i = 0;
+	i = 0; /* start */
 show:
 	/* clear screen and display slide */
 	printf("\x1b[2J\x1b[H" "%.*s", (int)s[i].siz, s[i].buf);
 again:
 	c = getchar();
-	switch (c) {
-	case 'q':
-		break;
-	/* next */
-	case 'l':
-	case 'j':
-	case 'C': /* right */
-	case 'B': /* down */
-		if (i < argc - 1) {
-			i++;
-			goto show;
-		}
-		goto again;
-	/* prev */
-	case 'h':
-	case 'k':
-	case 'D': /* left */
-	case 'A': /* up */
-		if (i > 0) {
-			i--;
-			goto show;
-		}
-		goto again;
-	case '\033':
-	case '[':
-	default:
-		goto again;
+	if (c == 'q') {
+		goto end;
+	} else if (i < argc - 1
+	    && (c == 'l' || c == 'j'
+	    || (codekey == 2 && (c == 'A' || c == 'C')))) { /* next */
+		i++;
+		goto show;
+	} else if (i > 0
+	    && (c == 'h' || c == 'k'
+	    || (codekey == 2 && (c == 'B' || c == 'D')))) { /* prev */
+		i--;
+		goto show;
 	}
-
+	/* handle keycode state */
+	codekey = (codekey == 2) ? 0 : codekey;
+	if (c == '\033')
+		codekey = 1;
+	else if (c == '[' && codekey == 1)
+		codekey = 2;
+	goto again;
+end:
 	/* unmap mem */
 	for (i = 0; i < argc; ++i)
 		munmap(s[i].buf, s[i].siz);