New git repository for release - version 0.2.0 tagged

node/BlobArray.hpp

@@ -0,0 +1,94 @@
+/*
+ * ZeroTier One - Global Peer to Peer Ethernet
+ * Copyright (C) 2012-2013  ZeroTier Networks LLC
+ *
+ * This program 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * ZeroTier may be used and distributed under the terms of the GPLv3, which
+ * are available at: http://www.gnu.org/licenses/gpl-3.0.html
+ *
+ * If you would like to embed ZeroTier into a commercial application or
+ * redistribute it in a modified binary form, please contact ZeroTier Networks
+ * LLC. Start here: http://www.zerotier.com/
+ */
+
+#ifndef _ZT_BLOBARRAY_HPP
+#define _ZT_BLOBARRAY_HPP
+
+#include <vector>
+#include <string>
+#include <algorithm>
+
+namespace ZeroTier {
+
+/**
+ * A vector of binary strings serializable in a packed format
+ *
+ * The format uses variable-length integers to indicate the length of each
+ * field. Each byte of the length has another byte with seven more significant
+ * bits if its 8th bit is set. Fields can be up to 2^28 in length.
+ */
+class BlobArray : public std::vector<std::string>
+{
+public:
+	inline std::string serialize() const
+	{
+		std::string r;
+		for(BlobArray::const_iterator i=begin();i!=end();++i) {
+			unsigned int flen = (unsigned int)i->length();
+			do {
+				unsigned char flenb = (unsigned char)(flen & 0x7f);
+				flen >>= 7;
+				flenb |= (flen) ? 0x80 : 0;
+				r.push_back((char)flenb);
+			} while (flen);
+			r.append(*i);
+		}
+		return r;
+	}
+
+	/**
+	 * Deserialize, replacing the current contents of this array
+	 *
+	 * @param data Serialized binary data
+	 * @param len Length of serialized data
+	 */
+	inline void deserialize(const void *data,unsigned int len)
+	{
+		clear();
+		for(unsigned int i=0;i<len;) {
+			unsigned int flen = 0;
+			unsigned int chunk = 0;
+			while (i < len) {
+				flen |= ((unsigned int)(((const unsigned char *)data)[i] & 0x7f)) << (7 * chunk++);
+				if (!(((const unsigned char *)data)[i++] & 0x80))
+					break;
+			}
+			flen = std::min(flen,len - i);
+			push_back(std::string(((const char *)data) + i,flen));
+			i += flen;
+		}
+	}
+	inline void deserialize(const std::string &data)
+	{
+		deserialize(data.data(),(unsigned int)data.length());
+	}
+};
+
+} // namespace ZeroTier
+
+#endif
+