cpp_include_paths.hpp

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        }

        ar & make_nvp("was_sys_include_path", was_sys_include_path);
    }
    BOOST_SERIALIZATION_SPLIT_MEMBER()
#endif
};

///////////////////////////////////////////////////////////////////////////////
//  Add an include path to one of the search lists (user include path or system 
//  include path).
inline
bool include_paths::add_include_path (
    char const *path_, include_list_type &pathes_)
{
    namespace fs = boost::filesystem;
    if (path_) {
    fs::path newpath = fs::complete(fs::path(path_, fs::native), current_dir);

        if (!fs::exists(newpath) || !fs::is_directory(newpath)) {
        // the given path does not form a name of a valid file system directory
        // item
            return false;
        }

        pathes_.push_back (include_value_type(newpath, path_));
        return true;
    }
    return false;
}

///////////////////////////////////////////////////////////////////////////////
//  Find an include file by traversing the list of include directories
inline
bool include_paths::find_include_file (std::string &s, std::string &dir, 
    include_list_type const &pathes, char const *current_file) const
{
    namespace fs = boost::filesystem;
    typedef include_list_type::const_iterator const_include_list_iter_t;

    const_include_list_iter_t it = pathes.begin();
    const_include_list_iter_t include_paths_end = pathes.end();

#if BOOST_WAVE_SUPPORT_INCLUDE_NEXT != 0    
    if (0 != current_file) {
    // re-locate the directory of the current file (#include_next handling)

    // #include_next does not distinguish between <file> and "file"
    // inclusion, nor does it check that the file you specify has the same
    // name as the current file.  It simply looks for the file named, starting
    // with the directory in the search path after the one where the current
    // file was found.

        fs::path file_path (current_file, fs::native);
        for (/**/; it != include_paths_end; ++it) {
            fs::path currpath ((*it).first.string(), fs::native);
            if (std::equal(currpath.begin(), currpath.end(), file_path.begin())) 
            {
                ++it;     // start searching with the next directory
                break;
            }
        }
    }
#endif

    for (/**/; it != include_paths_end; ++it) {
        fs::path currpath (s, fs::native);
        if (!currpath.has_root_directory()) {
            currpath = fs::path((*it).first.string(), fs::native);
            currpath /= fs::path(s, fs::native);      // append filename
        }
        
        if (fs::exists(currpath)) {
            fs::path dirpath (s, fs::native);
            if (!dirpath.has_root_directory()) {
                dirpath = fs::path((*it).second, fs::native);
                dirpath /= fs::path(s, fs::native);
            }
            
            dir = dirpath.string();
            s = currpath.normalize().string();    // found the required file
            return true;
        }
    }
    return false;
}

///////////////////////////////////////////////////////////////////////////////
//  Find an include file by searching the user and system includes in the 
//  correct sequence (as it was configured by the user of the driver program)
inline bool 
include_paths::find_include_file (std::string &s, std::string &dir, 
    bool is_system, char const *current_file) const
{
    namespace fs = boost::filesystem;
    
// if not system include (<...>), then search current directory first
    if (!is_system) {
        if (!was_sys_include_path) {  // set_sys_include_delimiter() not called
        // first have a look at the current directory
            fs::path currpath (s, fs::native);
            if (!currpath.has_root_directory()) {
                currpath = fs::path(current_dir.string(), fs::native);
                currpath /= fs::path(s, fs::native);
            }
            
            if (fs::exists(currpath) && 0 == current_file) {
            // if 0 != current_path (#include_next handling) it can't be
            // the file in the current directory
                fs::path dirpath (s, fs::native);
                if (!dirpath.has_root_directory()) {
                    dirpath = fs::path(current_rel_dir.string(), fs::native);
                    dirpath /= fs::path(s, fs::native);
                }
                
                dir = dirpath.string();
                s = currpath.normalize().string();    // found in local directory
                return true;
            }   

        // iterate all user include file directories to find the file
            if (find_include_file(s, dir, user_include_paths, current_file))
                return true;

        // ... fall through
        }
        else {
        //  if set_sys_include_delimiter() was called, then user include files
        //  are searched in the user search path only
            return find_include_file(s, dir, user_include_paths, current_file);
        }
        
    // if nothing found, fall through
    // ...
    }

// iterate all system include file directories to find the file
    return find_include_file (s, dir, system_include_paths, current_file);
}

///////////////////////////////////////////////////////////////////////////////
//  Set current directory from a given file name

inline
void include_paths::set_current_directory(char const *path_)
{
    namespace fs = boost::filesystem;
    
    fs::path filepath (path_, fs::native);
    fs::path filename = fs::complete(filepath, current_dir);
    if (fs::exists(filename) && fs::is_directory(filename)) {
        current_dir = filename;
        current_rel_dir = filepath;
    }
    else {
        current_dir = filename.branch_path();
        current_rel_dir = filepath.branch_path();
    }
}

///////////////////////////////////////////////////////////////////////////////
}}}   // namespace boost::wave::util

#if BOOST_WAVE_SERIALIZATION != 0
///////////////////////////////////////////////////////////////////////////////
namespace boost { namespace serialization {

///////////////////////////////////////////////////////////////////////////////
//  Serialization support for boost::filesystem::path
template<class Archive>
inline void save (Archive & ar, boost::filesystem::path const& p, 
    const unsigned int /* file_version */)
{
    using namespace boost::serialization;
    std::string path_str(p.native_file_string());
    ar & make_nvp("filepath", path_str);
}

template<class Archive>
inline void load (Archive & ar, boost::filesystem::path &p,
    const unsigned int /* file_version */)
{
    using namespace boost::serialization;
    std::string path_str;
    ar & make_nvp("filepath", path_str);
    p = boost::filesystem::path(path_str, boost::filesystem::native);
}

// split non-intrusive serialization function member into separate
// non intrusive save/load member functions
template<class Archive>
inline void serialize (Archive & ar, boost::filesystem::path &p,
    const unsigned int file_version)
{
    boost::serialization::split_free(ar, p, file_version);
}

///////////////////////////////////////////////////////////////////////////////
//  Serialization support for the used multi_index
template<class Archive>
inline void save (Archive & ar,
    const typename boost::wave::util::bidirectional_map<
        std::string, std::string
    >::type &t,
    const unsigned int /* file_version */)
{
    boost::serialization::stl::save_collection<
        Archive, 
        typename boost::wave::util::bidirectional_map<
            std::string, std::string
        >::type
    >(ar, t);
}

template<class Archive>
inline void load (Archive & ar,
    typename boost::wave::util::bidirectional_map<std::string, std::string>::type &t,
    const unsigned int /* file_version */)
{
    typedef typename boost::wave::util::bidirectional_map<
            std::string, std::string
        >::type map_type;
    boost::serialization::stl::load_collection<
        Archive, map_type,
        boost::serialization::stl::archive_input_unique<Archive, map_type>,
        boost::serialization::stl::no_reserve_imp<map_type>
    >(ar, t);
}

// split non-intrusive serialization function member into separate
// non intrusive save/load member functions
template<class Archive>
inline void serialize (Archive & ar, 
    typename boost::wave::util::bidirectional_map<
        std::string, std::string
    >::type &t,
    const unsigned int file_version)
{
    boost::serialization::split_free(ar, t, file_version);
}

///////////////////////////////////////////////////////////////////////////////
}}  // namespace boost::serialization

BOOST_CLASS_VERSION(boost::wave::util::include_paths, 
    boost::wave::util::include_paths::version);

#endif  // BOOST_WAVE_SERIALIZATION != 0

// the suffix header occurs after all of the code
#ifdef BOOST_HAS_ABI_HEADERS
#include BOOST_ABI_SUFFIX
#endif

#endif // !defined(CPP_INCLUDE_PATHS_HPP_AF620DA4_B3D2_4221_AD91_8A1ABFFB6944_INCLUDED)