shithub: moonfish

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make small improvements to perft CLI

--- a/tools/perft.c

+++ b/tools/perft.c

@@ -34,27 +34,26 @@

 int main(int argc, char **argv)

 {

+	static char *format = "<depth>";

 	static struct moonfish_arg args[] =

 	{

 		{"F", "fen", "<FEN>", NULL, "starting position for the game"},

-		{"N", "depth", "<plies>", "2", "the number of plies to search (default: '2')"},

 		{NULL, NULL, NULL, NULL, NULL},

 	};

-	char *end;

-	long int depth;

+	int depth;

 	struct moonfish_chess chess;

+	char **args2;

-	if (moonfish_args(args, NULL, argc, argv) - argv != argc) moonfish_usage(args, NULL, argv[0]);

+	args2 = moonfish_args(args, format, argc, argv);

+	if (args2 - argv != argc - 1) moonfish_usage(args, format, argv[0]);

-	errno = 0;

-	depth = strtol(args[1].value, &end, 10);

-	if (errno || *end != 0 || depth < 0 || depth >= 24) moonfish_usage(args, NULL, argv[0]);

+	if (moonfish_int(args2[0], &depth) || depth < 0) moonfish_usage(args, format, argv[0]);

 	moonfish_chess(&chess);

-	if (args[0].value != NULL && moonfish_from_fen(&chess, args[0].value)) moonfish_usage(args, NULL, argv[0]);

+	if (args[0].value != NULL && moonfish_from_fen(&chess, args[0].value)) moonfish_usage(args, format, argv[0]);

-	printf("perft %ld: %ld\n", depth, moonfish_perft(&chess, depth));

+	printf("perft %d: %ld\n", depth, moonfish_perft(&chess, depth));

 	return 0;

 }

-- 

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