1 files changed, 52 insertions, 0 deletions
diff --git a/hammer/buildnum.cpp b/hammer/buildnum.cpp
new file mode 100644
index 0000000..e1a7458
--- /dev/null
+++ b/hammer/buildnum.cpp
@@ -0,0 +1,52 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//
+//===========================================================================//
+#include <stdlib.h>
+#include <string.h>
+#include "tier1/strtools.h"
+
+// char *date = "Oct 24 1996";
+char *date = __DATE__ ;
+
+char *mon[12] = 
+{ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
+char mond[12] = 
+{ 31,    28,    31,    30,    31,    30,    31,    31,    30,    31,    30,    31 };
+
+// returns days since Oct 24 1996
+int build_number( void )
+{
+	int m = 0; 
+	int d = 0;
+	int y = 0;
+	static int b = 0;
+
+	if (b != 0)
+		return b;
+
+	for (m = 0; m < 11; m++)
+	{
+		if ( Q_strnicmp( &date[0], mon[m], 3 ) == 0 )
+			break;
+		d += mond[m];
+	}
+
+	d += atoi( &date[4] ) - 1;
+
+	y = atoi( &date[7] ) - 1900;
+
+	b = d + (int)((y - 1) * 365.25);
+
+	if (((y % 4) == 0) && m > 1)
+	{
+		b += 1;
+	}
+
+	b -= 34995; // Oct 24 1996
+
+	return b;
+}