Dynamically increase log buffer size when needed.

diff --git a/od-win32/writelog.cpp b/od-win32/writelog.cpp
index a6b679cb3c93e20a2dc8f06e7f2bcc2430609697..4cb003d60d6d4f2c7cf72d22f9307b33a4544c6b 100644 (file)
--- a/od-win32/writelog.cpp
+++ b/od-win32/writelog.cpp
@@ -352,15 +352,44 @@ static void console_put (const TCHAR *buffer)
        }
 }
 
+static int console_buf_len = 100000;
+
 void console_out_f (const TCHAR *format,...)
 {
+       int len;
        va_list parms;
+       TCHAR *pbuf;
        TCHAR buffer[WRITE_LOG_BUF_SIZE];
+       TCHAR *bigbuf = NULL;
 
+       pbuf = buffer;
        va_start (parms, format);
-       _vsntprintf (buffer, WRITE_LOG_BUF_SIZE - 1, format, parms);
+       len = _vsntprintf (pbuf, WRITE_LOG_BUF_SIZE - 1, format, parms);
+       if (!len)
+               return;
+       if (len < 0 || len >= WRITE_LOG_BUF_SIZE - 2) {
+               int buflen = console_buf_len;
+               for (;;) {
+                       bigbuf = xmalloc(TCHAR, buflen);
+                       if (!bigbuf)
+                               return;
+                       len = _vsntprintf(bigbuf, buflen - 1, format, parms);
+                       if (!len)
+                               return;
+                       if (len > 0 && len < buflen - 2)
+                               break;
+                       xfree(bigbuf);
+                       buflen += 100000;
+                       if (buflen > 10000000)
+                               return;
+               }
+               pbuf = bigbuf;
+               console_buf_len = buflen;
+       }
        va_end (parms);
-       console_put (buffer);
+       console_put (pbuf);
+       if (bigbuf)
+               xfree(bigbuf);
 }
 void console_out (const TCHAR *txt)
 {