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more standard features for filesystem

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This commit is contained in:
qPCR4vir 2016-02-19 13:52:15 +01:00
parent d8a06989f3
commit 9f430f7220
2 changed files with 43 additions and 35 deletions
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70
include/nana/filesystem/filesystem.hpp
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@ -1,4 +1,4 @@
/*
/**
* A ISO C++ filesystem Implementation
* Nana C++ Library(http://www.nanapro.org)
* Copyright(C) 2003-2016 Jinhao(cnjinhao@hotmail.com)
@ -7,17 +7,17 @@
* (See accompanying file LICENSE_1_0.txt or copy at
* http://www.boost.org/LICENSE_1_0.txt)
*
* @file: nana/filesystem/filesystem.hpp
* Modiffied by Ariel Vina-Rodriguez:
* Now mimic std::experimental::filesystem::v1 (boost v3)
* and need VC2015 or a C++11 compiler. With a few correction will be compiler by VC2013
* @file nana/filesystem/filesystem.hpp
* @author Jinhao, conributed: Ariel Vina-Rodriguez
* @brief Mimic std::experimental::filesystem::v1 (boost v3)
* and need VC2015 or a C++11 compiler. With a few correction can be compiler by VC2013
*/
// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4100.pdf --- last pdf of std draft N4100 <filesystem> 2014-07-04
// http://en.cppreference.com/w/cpp/experimental/fs
// http://cpprocks.com/introduction-to-tr2-filesystem-library-in-vs2012/ --- TR2 filesystem in VS2012
// https://msdn.microsoft.com/en-us/library/hh874694%28v=vs.140%29.aspx --- C++ 14, the <filesystem> header VS2015
// https://msdn.microsoft.com/en-us/library/hh874694%28v=vs.120%29.aspx --- <filesystem> header VS2013
// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4100.pdf --- last pdf of std draft N4100 2014-07-04
// http://cplusplus.github.io/filesystem-ts/working-draft.html --- in html format
// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4099.html --- in html format
// http://article.gmane.org/gmane.comp.lib.boost.devel/256220 --- The filesystem TS unanimously approved by ISO.
@ -47,7 +47,7 @@ namespace nana { namespace experimental { namespace filesystem
{
#endif
enum class file_type
enum class file_type
{
none = 0, ///< has not been determined or an error occurred while trying to determine
not_found = -1, ///< Pseudo-type: file was not found. Is not considered an error
@ -78,7 +78,7 @@ namespace nana { namespace experimental { namespace filesystem
uintmax_t available;
};
using file_time_type = std::chrono::time_point<std::chrono::system_clock>;// trivial-clock> ;
using file_time_type = std::chrono::time_point<std::chrono::system_clock>; ///< trivial-clock> ;
class file_status
{
@ -112,7 +112,7 @@ namespace nana { namespace experimental { namespace filesystem
public:
#if defined(NANA_WINDOWS)
using value_type = wchar_t;
const static value_type preferred_separator = '\\';
const static value_type preferred_separator = '\\'; //? L'\\' ?
#else
using value_type = char;
const static value_type preferred_separator = '/';
@ -199,8 +199,9 @@ namespace nana { namespace experimental { namespace filesystem
filesystem_error(const std::string& msg, const path& path1, std::error_code err);
filesystem_error(const std::string& msg, const path& path1, const path& path2, std::error_code err);
const path& path1() const; //noexcept
const path& path2() const; //noexcept
const path& path1() const noexcept;
const path& path2() const noexcept;
// const char* what() const noexcept;
private:
path path1_;
path path2_;
@ -225,33 +226,23 @@ namespace nana { namespace experimental { namespace filesystem
filesystem::path path_;
};
/// an iterator for a sequence of directory_entry elements representing the files in a directory, not an recursive_directory_iterator
//template<typename FileInfo>
/// InputIterator that iterate over the sequence of directory_entry elements representing the files in a directory, not an recursive_directory_iterator
class directory_iterator :public std::iterator<std::input_iterator_tag, directory_entry>
{
using find_handle = void*;
public:
using value_type = directory_entry ;
typedef ptrdiff_t difference_type;
typedef const directory_entry* pointer;
typedef const directory_entry& reference;
typedef std::input_iterator_tag iterator_category;
directory_iterator();
directory_iterator(const path& file_path);
directory_iterator() noexcept;
explicit directory_iterator(const path& dir);
const value_type& operator*() const;
const value_type* operator->() const;
directory_iterator& operator++();
directory_iterator operator++(int);
directory_iterator operator++(int); ///< extention
bool equal(const directory_iterator& x) const;
bool equal(const directory_iterator& x) const;
// enable directory_iterator range-based for statements
directory_iterator begin();
directory_iterator end();
private:
template<typename Char>
static bool _m_ignore(const Char * p)
@ -271,6 +262,16 @@ namespace nana { namespace experimental { namespace filesystem
find_handle handle_{nullptr};
value_type value_;
};
/// enable directory_iterator range-based for statements
inline directory_iterator begin( directory_iterator iter) noexcept
{
return iter;
}
inline directory_iterator end( const directory_iterator&) noexcept
{
return {};
}
//class recursive_directory_iterator;
@ -304,6 +305,17 @@ namespace nana { namespace experimental { namespace filesystem
//bool is_directory(const path& p, error_code& ec) noexcept;
inline bool is_regular_file(file_status s) noexcept
{
return s.type() == file_type::regular;
}
inline bool is_regular_file(const path& p)
{
return is_regular_file(status(p));
}
// bool is_regular_file(const path& p, error_code& ec) noexcept;
// Returns: is_regular_file(status(p, ec)).Returns false if an error occurs.
inline bool is_empty(const path& p)
{
auto fs = status(p);
@ -313,7 +325,7 @@ namespace nana { namespace experimental { namespace filesystem
return (file_size(p) == 0);
}
//bool is_empty(const path& p, error_code& ec) noexcept;
// bool is_empty(const path& p, error_code& ec) noexcept;
bool create_directories(const path& p);
@ -325,11 +337,11 @@ namespace nana { namespace experimental { namespace filesystem
bool modified_file_time(const path& p, struct tm&);
path path_user();
path path_user(); ///< extention ?
path current_path();
//path current_path(error_code& ec);
void current_path(const path& p);
void current_path(const path& p); ///< chdir
//void current_path(const path& p, error_code& ec) noexcept;

8
source/filesystem/filesystem.cpp
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@ -384,7 +384,7 @@ namespace nana { namespace experimental { namespace filesystem
}
};
directory_iterator::directory_iterator()
directory_iterator::directory_iterator() noexcept
: end_(true),
handle_(nullptr)
{}
@ -414,14 +414,10 @@ namespace nana { namespace experimental { namespace filesystem
bool directory_iterator::equal(const directory_iterator& x) const
{
if (end_ && (end_ == x.end_)) return true;
return (value_.path().filename() == x.value_.path().filename());
return (value_.path().filename() == x.value_.path().filename());
}
// enable directory_iterator range-based for statements
directory_iterator directory_iterator::begin() { return *this; }
directory_iterator directory_iterator::end() { return{}; }
void directory_iterator::_m_prepare(const path& file_path)
{
path_ = file_path.native();