From: Steinar H. Gunderson <sesse@debian.org>
Date: Sat, 7 Jul 2007 18:27:04 +0000 (+0200)
Subject: Change to unbuffered reading for the UCI channel.
X-Git-Url: https://git.sesse.net/?p=remoteglot;a=commitdiff_plain;h=d3db57677e015c6e3371df0acb7549447a9db771

Change to unbuffered reading for the UCI channel.
---

diff --git a/remoteglot.pl b/remoteglot.pl
index 28bebd2..6b423f6 100755
--- a/remoteglot.pl
+++ b/remoteglot.pl
@@ -23,7 +23,7 @@ my $target = "22";
 my $engine = "wine Rybkav2.3.2a.mp.w32.exe";
 my $telltarget = undef;   # undef to be silent
 my @tell_intervals = (5, 20, 60, 120, 240, 480, 960);  # after each move
-my $uci_assume_full_compliance = 0;                    # dangerous :-)
+my $uci_assume_full_compliance = 1;                    # dangerous :-)
 
 # Program starts here
 $SIG{ALRM} = sub { output_screen(); };
@@ -154,7 +154,27 @@ while (1) {
 	
 	# any fun on the UCI channel?
 	if ($nfound > 0 && vec($rout, fileno(UCIREAD), 1) == 1) {
-		my $line = <UCIREAD>;
+		# 
+		# Read until we've got a full line -- if the engine sends part of
+		# a line and then stops we're pretty much hosed, but that should
+		# never happen.
+		#
+		my $line = '';
+		while ($line !~ /\n/) {
+			my $tmp;
+			my $ret = sysread UCIREAD, $tmp, 1;
+
+			if (!defined($ret)) {
+				next if ($!{EINTR});
+				die "error in reading from the UCI engine: $!";
+			} elsif ($ret == 0) {
+				die "EOF from UCI engine";
+			}
+
+			$line .= $tmp;
+		}
+
+		$line =~ tr/\r\n//d;
 		handle_uci($line);
 		$sleep = 0;