]>
Commit | Line | Data |
---|---|---|
1 | // (C) Copyright Gennadiy Rozental 2001. | |
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 : $Revision$ | |
11 | // | |
12 | // Description : defines facility to hide input traversing details | |
13 | // *************************************************************************** | |
14 | ||
15 | #ifndef BOOST_TEST_UTILS_RUNTIME_CLA_ARGV_TRAVERSER_HPP | |
16 | #define BOOST_TEST_UTILS_RUNTIME_CLA_ARGV_TRAVERSER_HPP | |
17 | ||
18 | // Boost.Test Runtime parameters | |
19 | #include <boost/test/utils/runtime/fwd.hpp> | |
20 | ||
21 | #include <boost/test/detail/suppress_warnings.hpp> | |
22 | ||
23 | namespace boost { | |
24 | namespace runtime { | |
25 | namespace cla { | |
26 | ||
27 | // ************************************************************************** // | |
28 | // ************** runtime::cla::argv_traverser ************** // | |
29 | // ************************************************************************** // | |
30 | ||
31 | class argv_traverser { | |
32 | typedef char const** argv_type; | |
33 | public: | |
34 | /// Constructs traverser based on argc/argv pair | |
35 | /// argv is taken "by reference" and later can be | |
36 | /// updated in remainder method | |
37 | argv_traverser( int argc, argv_type argv ) | |
38 | : m_argc( argc ) | |
39 | , m_curr_token( 0 ) | |
40 | , m_token_size( 0 ) | |
41 | , m_argv( argv ) | |
42 | { | |
43 | // save program name | |
44 | save_token(); | |
45 | } | |
46 | ||
47 | /// Returns new argc | |
48 | int remainder() | |
49 | { | |
50 | return m_argc; | |
51 | } | |
52 | ||
53 | /// Returns true, if we reached end on input | |
54 | bool eoi() const | |
55 | { | |
56 | return m_curr_token == m_argc; | |
57 | } | |
58 | ||
59 | /// Returns current token in the input | |
60 | cstring current_token() | |
61 | { | |
62 | if( eoi() ) | |
63 | return cstring(); | |
64 | ||
65 | return cstring( m_argv[m_curr_token], m_token_size ); | |
66 | } | |
67 | ||
68 | /// Saves current token for remainder | |
69 | void save_token() | |
70 | { | |
71 | ++m_curr_token; | |
72 | ||
73 | if( !eoi() ) | |
74 | m_token_size = ::strlen( m_argv[m_curr_token] ); | |
75 | } | |
76 | ||
77 | /// Commit current token and iterate to next one | |
78 | void next_token() | |
79 | { | |
80 | if( !eoi() ) { | |
81 | for( std::size_t i = m_curr_token; i < m_argc-1; ++i ) | |
82 | m_argv[i] = m_argv[i + 1]; | |
83 | ||
84 | --m_argc; | |
85 | ||
86 | m_token_size = ::strlen( m_argv[m_curr_token] ); | |
87 | } | |
88 | } | |
89 | ||
90 | private: | |
91 | ||
92 | // Data members | |
93 | std::size_t m_argc; // total number of arguments | |
94 | std::size_t m_curr_token; // current token index in argv | |
95 | std::size_t m_token_size; // current token size | |
96 | argv_type m_argv; // all arguments | |
97 | }; | |
98 | ||
99 | } // namespace cla | |
100 | } // namespace runtime | |
101 | } // namespace boost | |
102 | ||
103 | #include <boost/test/detail/enable_warnings.hpp> | |
104 | ||
105 | #endif // BOOST_TEST_UTILS_RUNTIME_CLA_ARGV_TRAVERSER_HPP |