Initial commit of the synergy trunk sources from sf.net

lib/arch/vsnprintf.cpp

@@ -0,0 +1,61 @@
+/*
+ * synergy -- mouse and keyboard sharing utility
+ * Copyright (C) 2002 Chris Schoeneman
+ * 
+ * This package is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * found in the file COPYING that should have accompanied this file.
+ * 
+ * This package is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#if HAVE_VSNPRINTF
+
+#if !defined(ARCH_VSNPRINTF)
+#	define ARCH_VSNPRINTF vsnprintf
+#endif
+
+int
+ARCH_STRING::vsnprintf(char* str, int size, const char* fmt, va_list ap)
+{
+	int n = ::ARCH_VSNPRINTF(str, size, fmt, ap);
+	if (n > size) {
+		n = -1;
+	}
+	return n;
+}
+
+#elif SYSAPI_UNIX // !HAVE_VSNPRINTF
+
+#include <stdio.h>
+
+int
+ARCH_STRING::vsnprintf(char* str, int size, const char* fmt, va_list ap)
+{
+	static FILE* bitbucket = fopen("/dev/null", "w");
+	if (bitbucket == NULL) {
+		// uh oh
+		if (size > 0) {
+			str[0] = '\0';
+		}
+		return 0;
+	}
+	else {
+		// count the characters using the bitbucket
+		int n = vfprintf(bitbucket, fmt, ap);
+		if (n + 1 <= size) {
+			// it'll fit so print it into str
+			vsprintf(str, fmt, ap);
+		}
+		return n;
+	}
+}
+
+#else // !HAVE_VSNPRINTF && !SYSAPI_UNIX
+
+#error vsnprintf not implemented
+
+#endif // !HAVE_VSNPRINTF