Added libraries

dlls/geoip/geolib/libGeoIP/GeoIPBitReader.c

@@ -0,0 +1,55 @@
+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 2; tab-width: 2 -*- */
+/* GeoIPBitReader.c
+ *
+ * Copyright (C) 2002 MaxMind.com.  All Rights Reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "GeoIPBitReader.h"
+
+GeoIPBitReader * GeoIPBitReader_new(const char * filename) {
+	GeoIPBitReader *gibr = (GeoIPBitReader *)malloc(sizeof(GeoIPBitReader));
+	gibr->GeoIPBitFH = fopen(filename,"rb");
+	if (gibr->GeoIPBitFH == NULL) {
+		fprintf(stderr, "Error Opening file %s\n",filename);
+		return NULL;
+	}
+	gibr->position = 8;
+	return gibr;
+}
+
+unsigned long GeoIPBitReader_read(GeoIPBitReader * gibr, short int numBits) {
+	unsigned long num = 0;
+	int i, bit;
+	int bytes_read;
+
+	for (i = 0; i < numBits; ++i) {
+		if (BITS_IN_BYTE == gibr->position) {
+			/* read in next byte */
+			bytes_read = fread(&gibr->bits, 1, 1, gibr->GeoIPBitFH);
+			if (bytes_read == 0) {
+				fprintf(stderr, "Warning: EOF reached\n");
+				gibr->bits = 0;
+			}
+			gibr->position = 0;
+		}
+		bit = ((gibr->bits & (1 << (BITS_IN_BYTE - gibr->position - 1))) > 0) ? 1 : 0;
+		bit <<= i;
+		num += bit;
+		++(gibr->position);
+	}
+	return num;
+}