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working on directory_only_iterator<filesystem::directory_iterator>

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This commit is contained in:
qPCR4vir 2016-02-18 15:38:33 +01:00
parent 0e0f1cfb7f
commit 6d84be2051
2 changed files with 48 additions and 13 deletions
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13
include/nana/filesystem/filesystem.hpp
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@ -297,15 +297,12 @@ namespace nana { namespace experimental { namespace filesystem
std::uintmax_t file_size(const path& p);
//uintmax_t file_size(const path& p, error_code& ec) noexcept;
inline bool is_directory(file_status s) { return s.type() == file_type::directory ;}
bool is_directory(const path& p);
inline bool is_directory(const directory_entry& d)
{
return is_directory(d.status());
}
//bool is_directory(const path& p, error_code& ec) noexcept;
inline bool is_directory(file_status s) noexcept
{ return s.type() == file_type::directory ;}
//bool is_regular_file(file_status s) noexcept;
bool is_directory(const path& p);
//bool is_directory(const path& p, error_code& ec) noexcept;
inline bool is_empty(const path& p)
{

48
include/nana/filesystem/filesystem_ext.hpp
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@ -26,18 +26,56 @@ namespace nana {namespace experimental {namespace filesystem {namespace ext {
constexpr auto def_rootname = "Root/";
#endif
// nana::experimental::filesystem::path_user()); // REPLACE !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! to filesystem_ext.hhp
// nana::experimental::filesystem::path_user()); // REPLACE !!!!!!!!!! to filesystem_ext.hhp
template<class DI> // DI = directory_iterator from std, boost, or nana
inline bool is_directory(const directory_entry& d) noexcept
{
return is_directory(d.status());
}
template<class DI> // DI = directory_iterator from std, boost, or nana : return directory_entry
class directory_only_iterator : public DI
{
// if (!this->is_directory()) continue;
DI& find_first()
{
while(( (*this) != DI{}) || !is_directory((*this)) )
this->DI::operator++();
return (*this);
}
public:
template <class... Arg>
directory_only_iterator(Arg&&... arg ): DI(std::forward<Arg>(arg)...)
{
find_first();
}
directory_only_iterator& operator++()
{
this->DI::operator++();
return find_first();
}
};
template<class DI> // DI = directory_iterator from std, boost, or nana
template<class DI> // DI = directory_iterator from std, boost, or nana : value_type directory_entry
class regular_file_only_iterator : public DI
{
// if (this->is_directory()) continue;
DI& find_first()
{
while(( (*this) != DI{}) || !is_regular_file(*this) )
this->DI::operator++();
return (*this);
}
public:
template <class... Arg>
regular_file_only_iterator(Arg&&... arg ): DI(std::forward<Arg>(arg)...)
{
find_first();
}
regular_file_only_iterator& operator++()
{
this->DI::operator++();
return find_first();
}
};
}}}}