chess-puzzles

commit 09a541233ed6f1abf9f4498b37d1281a78f65ce8
parent 5df80ee4eebb2000bcac5530f58e6c84e9b92818
Author: Hiltjo Posthuma <hiltjo@codemadness.org>
Date:   Tue, 19 Dec 2023 00:31:34 +0100

separate function to check a valid piece character

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

1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/fen_to_svg.c b/fen_to_svg.c
@@ -184,11 +184,19 @@ showboard(void)
 }
 
 int
+isvalidpiece(int c)
+{
+	static char pieces[] = "PNBRQKpnbrqk";
+
+	return strchr(pieces, c) ? 1 : 0;
+}
+
+int
 main(int argc, char *argv[])
 {
 	const char *fen, *moves, *s;
 	int x, y, x2, y2, field, piece;
-	char pieces[] = "PNBRQKpnbrqk", square[3];
+	char square[3];
 
 	if (argc != 3) {
 		fprintf(stderr, "usage: %s <FEN> <moves>\n", argv[0]);
@@ -223,7 +231,7 @@ main(int argc, char *argv[])
 				continue;
 			}
 			/* is piece? place it */
-			if (strchr(pieces, *s))
+			if (isvalidpiece(*s))
 				place(*s, x++, y);
 			break;
 		case 1: /* active color */