From: H.G.Muller <hgm@hgm-xboard.(none)>
Date: Wed, 27 Apr 2016 19:41:45 +0000 (+0200)
Subject: Make resistant to empty lines
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=3f02c0b84e29979405064a927952a21bd2427045;p=hachu.git

Make resistant to empty lines

An empty line (emitted by XBoard due to a bug) made HaChu repeat
the previous command. Now the GetLine routine keeps reading until
it gets a non-empty line.
---

diff --git a/hachu.c b/hachu.c
index 7c672d4..bb26721 100644
--- a/hachu.c
+++ b/hachu.c
@@ -2792,8 +2792,10 @@ printf("# setup done");fflush(stdout);
       int i, c;
       while(1) {
         // wait for input, and read it until we have collected a complete line
-        for(i = 0; (inBuf[i] = c = getchar()) != '\n'; i++) if(c == EOF || i>7997) exit(0);
-        inBuf[i+1] = 0;
+        do {
+          for(i = 0; (inBuf[i] = c = getchar()) != '\n'; i++) if(c == EOF || i>7997) exit(0);
+          inBuf[i+1] = 0;
+        } while(!i); // ignore empty lines
 
         // extract the first word
         sscanf(inBuf, "%s", command);