runtime.param examples added

[SVN r28150]

example/cla/basic_udt.cpp

@@ -0,0 +1,72 @@
+//  (C) Copyright Gennadiy Rozental 2001-2004.
+//  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)
+
+//  See http://www.boost.org/libs/test for the library home page.
+
+// Boost.Runtime.Param
+#include <boost/test/utils/runtime/cla/named_parameter.hpp>
+#include <boost/test/utils/runtime/cla/parser.hpp>
+
+namespace rt  = boost::runtime;
+namespace cla = boost::runtime::cla;
+
+// STL
+#include <iostream>
+
+// Library code
+struct FullName
+{
+    std::string first_name;
+    std::string last_name;
+};
+
+std::istream&
+operator>>( std::istream& istr, FullName& f )
+{
+    std::string token;
+    istr >> token;
+
+    std::size_t pos = token.find( ',' );
+    if( pos != std::string::npos ) {
+        f.first_name.assign( token.begin(), token.begin()+pos );
+        f.last_name.assign( token.begin()+pos+1, token.end() );
+    }
+    else {
+        f.first_name = token;
+    }
+
+    return istr;
+}
+
+std::ostream&
+operator<<( std::ostream& ostr, FullName const& f )
+{
+    return ostr << f.first_name << ':' << f.last_name;
+}
+
+// End of library code
+
+int main() {
+    char* argv[] = { "basic", "-abcd", "John,Doe" };
+    int argc = sizeof(argv)/sizeof(char*);
+
+    try {
+        cla::parser P;
+
+        P << cla::named_parameter<FullName>( "abcd" );
+
+        P.parse( argc, argv );
+
+        std::cout << "abcd = " << P.get<FullName>( "abcd" ) << std::endl;
+    }
+    catch( rt::logic_error const& ex ) {
+        std::cout << "Logic error: " << ex.msg() << std::endl;
+        return -1;
+    }
+
+    return 0;
+}
+
+// EOF