1 //  (C) Copyright Gennadiy Rozental 2005-2008.
2 //  Use, modification, and distribution are subject to the
3 //  Boost Software License, Version 1.0. (See accompanying file
4 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
5 
6 //  See http://www.boost.org/libs/test for the library home page.
7 //
8 //  File        : $RCSfile$
9 //
10 //  Version     : $Revision: 57992 $
11 //
12 //  Description : defines facility to hide input traversing details
13 // ***************************************************************************
14 
15 #ifndef BOOST_RT_CLA_ARGV_TRAVERSER_HPP_062604GER
16 #define BOOST_RT_CLA_ARGV_TRAVERSER_HPP_062604GER
17 
18 // Boost.Runtime.Parameter
19 #include <boost/test/utils/runtime/config.hpp>
20 
21 // Boost.Test
22 #include <boost/test/utils/class_properties.hpp>
23 
24 // Boost
25 #include <boost/noncopyable.hpp>
26 #include <boost/shared_array.hpp>
27 
28 namespace boost {
29 
30 namespace BOOST_RT_PARAM_NAMESPACE {
31 
32 namespace cla {
33 
34 // ************************************************************************** //
35 // **************          runtime::cla::argv_traverser        ************** //
36 // ************************************************************************** //
37 
38 class argv_traverser : noncopyable {
39     class parser;
40 public:
41     // Constructor
42     argv_traverser();
43 
44     // public_properties
45     unit_test::readwrite_property<bool>         p_ignore_mismatch;
46     unit_test::readwrite_property<char_type>    p_separator;
47 
48     // argc+argv <-> internal buffer exchange
49     void            init( int argc, char_type** argv );
50     void            remainder( int& argc, char_type** argv );
51 
52     // token based parsing
53     cstring         token() const;
54     void            next_token();
55 
56     // whole input parsing
57     cstring         input() const;
58     void            trim( std::size_t size );
59     bool            match_front( cstring );
60     bool            match_front( char_type c );
61     bool            eoi() const;
62 
63     // transaction logic support
64     void            commit();
65     void            rollback();
66 
67     // current position access; used to save some reference points in input
68     std::size_t     input_pos() const;
69 
70     // returns true if mismatch detected during input parsing handled successfully
71     bool            handle_mismatch();
72 
73 private:
74     // Data members
75     dstring                 m_buffer;
76     cstring                 m_work_buffer;
77 
78     cstring                 m_token;
79     cstring::iterator       m_commited_end;
80 
81     shared_array<char_type> m_remainder;
82     std::size_t             m_remainder_size;
83 };
84 
85 } // namespace cla
86 
87 } // namespace BOOST_RT_PARAM_NAMESPACE
88 
89 } // namespace boost
90 
91 #ifndef BOOST_RT_PARAM_OFFLINE
92 
93 #  define BOOST_RT_PARAM_INLINE inline
94 #  include <boost/test/utils/runtime/cla/argv_traverser.ipp>
95 
96 #endif
97 
98 #endif // BOOST_RT_CLA_ARGV_TRAVERSER_HPP_062604GER
99