Added boost header

test/external/boost/program_options/positional_options.hpp

@@ -0,0 +1,74 @@
+// Copyright Vladimir Prus 2004.
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE_1_0.txt
+// or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_PROGRAM_OPTIONS_POSITIONAL_OPTIONS_VP_2004_03_02
+#define BOOST_PROGRAM_OPTIONS_POSITIONAL_OPTIONS_VP_2004_03_02
+
+#include <boost/program_options/config.hpp>
+
+#include <vector>
+#include <string>
+
+#if defined(BOOST_MSVC)
+#   pragma warning (push)
+#   pragma warning (disable:4251) // class 'std::vector<_Ty>' needs to have dll-interface to be used by clients of class 'boost::program_options::positional_options_description'
+#endif
+
+namespace boost { namespace program_options {
+
+    /** Describes positional options. 
+
+        The class allows to guess option names for positional options, which
+        are specified on the command line and are identified by the position.
+        The class uses the information provided by the user to associate a name
+        with every positional option, or tell that no name is known. 
+
+        The primary assumption is that only the relative order of the
+        positional options themselves matters, and that any interleaving
+        ordinary options don't affect interpretation of positional options.
+        
+        The user initializes the class by specifying that first N positional 
+        options should be given the name X1, following M options should be given 
+        the name X2 and so on. 
+    */
+    class BOOST_PROGRAM_OPTIONS_DECL positional_options_description {
+    public:
+        positional_options_description();
+
+        /** Species that up to 'max_count' next positional options
+            should be given the 'name'. The value of '-1' means 'unlimited'. 
+            No calls to 'add' can be made after call with 'max_value' equal to 
+            '-1'.            
+        */
+        positional_options_description&
+        add(const char* name, int max_count);
+
+        /** Returns the maximum number of positional options that can
+            be present. Can return (numeric_limits<unsigned>::max)() to
+            indicate unlimited number. */
+        unsigned max_total_count() const;
+
+        /** Returns the name that should be associated with positional
+            options at 'position'. 
+            Precondition: position < max_total_count()
+        */
+        const std::string& name_for_position(unsigned position) const;
+
+    private:
+        // List of names corresponding to the positions. If the number of
+        // positions is unlimited, then the last name is stored in
+        // m_trailing;
+        std::vector<std::string> m_names;
+        std::string m_trailing;
+    };
+
+}}
+
+#if defined(BOOST_MSVC)
+#   pragma warning (pop)
+#endif
+
+#endif
+