[DB] Importing KNNL library

2016-04-14 12:53:29 +02:00
parent dda0f38315
commit 0dace5cbdf
26 changed files with 4936 additions and 1 deletions
@@ -0,0 +1,157 @@
+/*
+ * Copyright (c) 2006, Seweryn Habdank-Wojewodzki
+ * Copyright (c) 2006, Janusz Rybarski
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms,
+ * with or without modification, are permitted provided
+ * that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the
+ * following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the
+ * above copyright notice, this list of conditions
+ * and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
+ * AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+ * THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * e-mail: habdank AT gmail DOT com
+ * e-mail: janusz.rybarski AT gmail DOT com
+ *
+ * File created: Sat 29 Apr 2006 19:10:50 CEST
+ * Last modified: Wed 08 Aug 2007 17:15:45 CEST
+ */
+
+#ifndef DATA_PARSER_HPP_INCLUDED
+#define DATA_PARSER_HPP_INCLUDED
+
+#include <algorithm>
+#include <iostream>
+#include <sstream>
+#include <stdexcept>
+#include <string>
+
+/**
+ * \defgroup data_parser Data parser
+ */
+
+/**
+ * \file data_parser.hpp
+ * \brief File contains template class Data_parser.
+ * \ingroup data_parser
+ */
+
+/**
+ * \addtogroup data_parser
+ */
+/*\@{*/
+
+/**
+ * \namespace data_parser
+ * \brief Data parser namespace includes functionality to parsing and storing data into containers.
+ * \ingroup data_parser
+ */
+namespace data_parser
+{
+    /**
+     * Class for parsing data stream.
+     * \param Data_container is a container type.
+     */
+    template < typename Data_container >
+    class Data_parser
+    {
+    public:
+        /** Constructor. */
+        Data_parser()
+        {}
+
+        /**
+         * Function that parse stream and store data in container.
+         * \param is is a reference to the stream.
+         * \param data_container is a reference to the container.
+         * \return modified container.
+         * \throw ::std::runtime_error when after parsing size of data_container is still zero.
+         */
+        Data_container & operator() ( ::std::istream & is, Data_container & data_container ) const
+        {
+            ::std::string tmp_string;
+            ::boost::int32_t counter = 0;
+
+            typename Data_container::value_type tmp_sub_container;
+
+            // get line of data from stream
+            while ( ::std::getline ( is, tmp_string ) )
+            {
+                // count data
+                ++counter;
+
+                // parse data and push data back into the container
+                data_container.push_back ( parse_string ( tmp_sub_container, tmp_string ) );
+
+                // reset temporal container
+                tmp_sub_container.clear();
+            }
+
+            // if data container is empty after all procedure throw exception
+            if ( data_container.size() == 0 )
+            {
+                throw ::std::runtime_error ( "Data file corupted." );
+            }
+
+            // return data container of containers
+            return data_container;
+        }
+
+    private:
+        /**
+         * This function is for parsing string.
+         * \param container is a reference to the data conatiner.
+         * \param str is a reference to the string.
+         * \return container of the values stored in one string.
+         */
+        typename Data_container::value_type parse_string
+        (
+            typename Data_container::value_type & container,
+            ::std::string & str
+        ) const
+        {
+            ::std::stringstream tmp_sstr ( str );
+
+            typedef typename Data_container::value_type::value_type internal_type;
+
+            // parse data as sequence of fixed type data and store them into the container.
+            ::std::copy
+            (
+                ::std::istream_iterator < internal_type > ( tmp_sstr ),
+                ::std::istream_iterator < internal_type >(),
+                ::std::back_inserter ( container )
+            );
+
+            return container;
+        }
+
+    };
+} // namespace data_parser
+/*\@}*/
+
+#endif // DATA_PARSER_HPP_INCLUDED