353 lines
10 KiB
Plaintext
353 lines
10 KiB
Plaintext
|
// filesystem path_traits.hpp --------------------------------------------------------//
|
||
|
|
|
||
|
|
// Copyright Beman Dawes 2009
|
||
|
|
|
||
|
|
// Distributed under the Boost Software License, Version 1.0.
|
||
|
|
// See http://www.boost.org/LICENSE_1_0.txt
|
||
|
|
|
||
|
|
// Library home page: http://www.boost.org/libs/filesystem
|
||
|
|
|
||
|
|
#ifndef BOOST_FILESYSTEM_PATH_TRAITS_HPP
|
||
|
|
#define BOOST_FILESYSTEM_PATH_TRAITS_HPP
|
||
|
|
|
||
|
|
#include <boost/config.hpp>
|
||
|
|
|
||
|
|
# if defined( BOOST_NO_STD_WSTRING )
|
||
|
|
# error Configuration not supported: Boost.Filesystem V3 and later requires std::wstring support
|
||
|
|
# endif
|
||
|
|
|
||
|
|
#include <boost/filesystem/config.hpp>
|
||
|
|
#include <boost/utility/enable_if.hpp>
|
||
|
|
#include <boost/type_traits/is_array.hpp>
|
||
|
|
#include <boost/type_traits/decay.hpp>
|
||
|
|
#include <boost/system/error_code.hpp>
|
||
|
|
#include <cwchar> // for mbstate_t
|
||
|
|
#include <string>
|
||
|
|
#include <vector>
|
||
|
|
#include <list>
|
||
|
|
#include <iterator>
|
||
|
|
#include <locale>
|
||
|
|
#include <boost/assert.hpp>
|
||
|
|
// #include <iostream> //**** comment me out ****
|
||
|
|
|
||
|
|
#include <boost/config/abi_prefix.hpp> // must be the last #include
|
||
|
|
|
||
|
|
namespace boost { namespace filesystem {
|
||
|
|
|
||
|
|
BOOST_FILESYSTEM_DECL const system::error_category& codecvt_error_category();
|
||
|
|
// uses std::codecvt_base::result used for error codes:
|
||
|
|
//
|
||
|
|
// ok: Conversion successful.
|
||
|
|
// partial: Not all source characters converted; one or more additional source
|
||
|
|
// characters are needed to produce the final target character, or the
|
||
|
|
// size of the target intermediate buffer was too small to hold the result.
|
||
|
|
// error: A character in the source could not be converted to the target encoding.
|
||
|
|
// noconv: The source and target characters have the same type and encoding, so no
|
||
|
|
// conversion was necessary.
|
||
|
|
|
||
|
|
class directory_entry;
|
||
|
|
|
||
|
|
namespace path_traits {
|
||
|
|
|
||
|
|
typedef std::codecvt<wchar_t, char, std::mbstate_t> codecvt_type;
|
||
|
|
|
||
|
|
// is_pathable type trait; allows disabling over-agressive class path member templates
|
||
|
|
|
||
|
|
template <class T>
|
||
|
|
struct is_pathable { static const bool value = false; };
|
||
|
|
|
||
|
|
template<> struct is_pathable<char*> { static const bool value = true; };
|
||
|
|
template<> struct is_pathable<const char*> { static const bool value = true; };
|
||
|
|
template<> struct is_pathable<wchar_t*> { static const bool value = true; };
|
||
|
|
template<> struct is_pathable<const wchar_t*> { static const bool value = true; };
|
||
|
|
template<> struct is_pathable<std::string> { static const bool value = true; };
|
||
|
|
template<> struct is_pathable<std::wstring> { static const bool value = true; };
|
||
|
|
template<> struct is_pathable<std::vector<char> > { static const bool value = true; };
|
||
|
|
template<> struct is_pathable<std::vector<wchar_t> > { static const bool value = true; };
|
||
|
|
template<> struct is_pathable<std::list<char> > { static const bool value = true; };
|
||
|
|
template<> struct is_pathable<std::list<wchar_t> > { static const bool value = true; };
|
||
|
|
template<> struct is_pathable<directory_entry> { static const bool value = true; };
|
||
|
|
|
||
|
|
// Pathable empty
|
||
|
|
|
||
|
|
template <class Container> inline
|
||
|
|
// disable_if aids broken compilers (IBM, old GCC, etc.) and is harmless for
|
||
|
|
// conforming compilers. Replace by plain "bool" at some future date (2012?)
|
||
|
|
typename boost::disable_if<boost::is_array<Container>, bool>::type
|
||
|
|
empty(const Container & c)
|
||
|
|
{ return c.begin() == c.end(); }
|
||
|
|
|
||
|
|
template <class T> inline
|
||
|
|
bool empty(T * const & c_str)
|
||
|
|
{
|
||
|
|
BOOST_ASSERT(c_str);
|
||
|
|
return !*c_str;
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename T, size_t N> inline
|
||
|
|
bool empty(T (&x)[N])
|
||
|
|
{ return !x[0]; }
|
||
|
|
|
||
|
|
// value types differ ---------------------------------------------------------------//
|
||
|
|
//
|
||
|
|
// A from_end argument of 0 is less efficient than a known end, so use only if needed
|
||
|
|
|
||
|
|
// with codecvt
|
||
|
|
|
||
|
|
BOOST_FILESYSTEM_DECL
|
||
|
|
void convert(const char* from,
|
||
|
|
const char* from_end, // 0 for null terminated MBCS
|
||
|
|
std::wstring & to,
|
||
|
|
const codecvt_type& cvt);
|
||
|
|
|
||
|
|
BOOST_FILESYSTEM_DECL
|
||
|
|
void convert(const wchar_t* from,
|
||
|
|
const wchar_t* from_end, // 0 for null terminated MBCS
|
||
|
|
std::string & to,
|
||
|
|
const codecvt_type& cvt);
|
||
|
|
|
||
|
|
inline
|
||
|
|
void convert(const char* from,
|
||
|
|
std::wstring & to,
|
||
|
|
const codecvt_type& cvt)
|
||
|
|
{
|
||
|
|
BOOST_ASSERT(from);
|
||
|
|
convert(from, 0, to, cvt);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline
|
||
|
|
void convert(const wchar_t* from,
|
||
|
|
std::string & to,
|
||
|
|
const codecvt_type& cvt)
|
||
|
|
{
|
||
|
|
BOOST_ASSERT(from);
|
||
|
|
convert(from, 0, to, cvt);
|
||
|
|
}
|
||
|
|
|
||
|
|
// without codecvt
|
||
|
|
|
||
|
|
inline
|
||
|
|
void convert(const char* from,
|
||
|
|
const char* from_end, // 0 for null terminated MBCS
|
||
|
|
std::wstring & to);
|
||
|
|
|
||
|
|
inline
|
||
|
|
void convert(const wchar_t* from,
|
||
|
|
const wchar_t* from_end, // 0 for null terminated MBCS
|
||
|
|
std::string & to);
|
||
|
|
|
||
|
|
inline
|
||
|
|
void convert(const char* from,
|
||
|
|
std::wstring & to);
|
||
|
|
|
||
|
|
inline
|
||
|
|
void convert(const wchar_t* from,
|
||
|
|
std::string & to);
|
||
|
|
|
||
|
|
// value types same -----------------------------------------------------------------//
|
||
|
|
|
||
|
|
// char with codecvt
|
||
|
|
|
||
|
|
inline
|
||
|
|
void convert(const char* from, const char* from_end, std::string & to,
|
||
|
|
const codecvt_type&)
|
||
|
|
{
|
||
|
|
BOOST_ASSERT(from);
|
||
|
|
BOOST_ASSERT(from_end);
|
||
|
|
to.append(from, from_end);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline
|
||
|
|
void convert(const char* from,
|
||
|
|
std::string & to,
|
||
|
|
const codecvt_type&)
|
||
|
|
{
|
||
|
|
BOOST_ASSERT(from);
|
||
|
|
to += from;
|
||
|
|
}
|
||
|
|
|
||
|
|
// wchar_t with codecvt
|
||
|
|
|
||
|
|
inline
|
||
|
|
void convert(const wchar_t* from, const wchar_t* from_end, std::wstring & to,
|
||
|
|
const codecvt_type&)
|
||
|
|
{
|
||
|
|
BOOST_ASSERT(from);
|
||
|
|
BOOST_ASSERT(from_end);
|
||
|
|
to.append(from, from_end);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline
|
||
|
|
void convert(const wchar_t* from,
|
||
|
|
std::wstring & to,
|
||
|
|
const codecvt_type&)
|
||
|
|
{
|
||
|
|
BOOST_ASSERT(from);
|
||
|
|
to += from;
|
||
|
|
}
|
||
|
|
|
||
|
|
// char without codecvt
|
||
|
|
|
||
|
|
inline
|
||
|
|
void convert(const char* from, const char* from_end, std::string & to)
|
||
|
|
{
|
||
|
|
BOOST_ASSERT(from);
|
||
|
|
BOOST_ASSERT(from_end);
|
||
|
|
to.append(from, from_end);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline
|
||
|
|
void convert(const char* from, std::string & to)
|
||
|
|
{
|
||
|
|
BOOST_ASSERT(from);
|
||
|
|
to += from;
|
||
|
|
}
|
||
|
|
|
||
|
|
// wchar_t without codecvt
|
||
|
|
|
||
|
|
inline
|
||
|
|
void convert(const wchar_t* from, const wchar_t* from_end, std::wstring & to)
|
||
|
|
{
|
||
|
|
BOOST_ASSERT(from);
|
||
|
|
BOOST_ASSERT(from_end);
|
||
|
|
to.append(from, from_end);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline
|
||
|
|
void convert(const wchar_t* from, std::wstring & to)
|
||
|
|
{
|
||
|
|
BOOST_ASSERT(from);
|
||
|
|
to += from;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Source dispatch -----------------------------------------------------------------//
|
||
|
|
|
||
|
|
// contiguous containers with codecvt
|
||
|
|
template <class U> inline
|
||
|
|
void dispatch(const std::string& c, U& to, const codecvt_type& cvt)
|
||
|
|
{
|
||
|
|
if (c.size())
|
||
|
|
convert(&*c.begin(), &*c.begin() + c.size(), to, cvt);
|
||
|
|
}
|
||
|
|
template <class U> inline
|
||
|
|
void dispatch(const std::wstring& c, U& to, const codecvt_type& cvt)
|
||
|
|
{
|
||
|
|
if (c.size())
|
||
|
|
convert(&*c.begin(), &*c.begin() + c.size(), to, cvt);
|
||
|
|
}
|
||
|
|
template <class U> inline
|
||
|
|
void dispatch(const std::vector<char>& c, U& to, const codecvt_type& cvt)
|
||
|
|
{
|
||
|
|
if (c.size())
|
||
|
|
convert(&*c.begin(), &*c.begin() + c.size(), to, cvt);
|
||
|
|
}
|
||
|
|
template <class U> inline
|
||
|
|
void dispatch(const std::vector<wchar_t>& c, U& to, const codecvt_type& cvt)
|
||
|
|
{
|
||
|
|
if (c.size())
|
||
|
|
convert(&*c.begin(), &*c.begin() + c.size(), to, cvt);
|
||
|
|
}
|
||
|
|
|
||
|
|
// contiguous containers without codecvt
|
||
|
|
template <class U> inline
|
||
|
|
void dispatch(const std::string& c, U& to)
|
||
|
|
{
|
||
|
|
if (c.size())
|
||
|
|
convert(&*c.begin(), &*c.begin() + c.size(), to);
|
||
|
|
}
|
||
|
|
template <class U> inline
|
||
|
|
void dispatch(const std::wstring& c, U& to)
|
||
|
|
{
|
||
|
|
if (c.size())
|
||
|
|
convert(&*c.begin(), &*c.begin() + c.size(), to);
|
||
|
|
}
|
||
|
|
template <class U> inline
|
||
|
|
void dispatch(const std::vector<char>& c, U& to)
|
||
|
|
{
|
||
|
|
if (c.size())
|
||
|
|
convert(&*c.begin(), &*c.begin() + c.size(), to);
|
||
|
|
}
|
||
|
|
template <class U> inline
|
||
|
|
void dispatch(const std::vector<wchar_t>& c, U& to)
|
||
|
|
{
|
||
|
|
if (c.size())
|
||
|
|
convert(&*c.begin(), &*c.begin() + c.size(), to);
|
||
|
|
}
|
||
|
|
|
||
|
|
// non-contiguous containers with codecvt
|
||
|
|
template <class Container, class U> inline
|
||
|
|
// disable_if aids broken compilers (IBM, old GCC, etc.) and is harmless for
|
||
|
|
// conforming compilers. Replace by plain "void" at some future date (2012?)
|
||
|
|
typename boost::disable_if<boost::is_array<Container>, void>::type
|
||
|
|
dispatch(const Container & c, U& to, const codecvt_type& cvt)
|
||
|
|
{
|
||
|
|
if (c.size())
|
||
|
|
{
|
||
|
|
std::basic_string<typename Container::value_type> s(c.begin(), c.end());
|
||
|
|
convert(s.c_str(), s.c_str()+s.size(), to, cvt);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// c_str
|
||
|
|
template <class T, class U> inline
|
||
|
|
void dispatch(T * const & c_str, U& to, const codecvt_type& cvt)
|
||
|
|
{
|
||
|
|
// std::cout << "dispatch() const T *\n";
|
||
|
|
BOOST_ASSERT(c_str);
|
||
|
|
convert(c_str, to, cvt);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Note: there is no dispatch on C-style arrays because the array may
|
||
|
|
// contain a string smaller than the array size.
|
||
|
|
|
||
|
|
BOOST_FILESYSTEM_DECL
|
||
|
|
void dispatch(const directory_entry & de,
|
||
|
|
# ifdef BOOST_WINDOWS_API
|
||
|
|
std::wstring & to,
|
||
|
|
# else
|
||
|
|
std::string & to,
|
||
|
|
# endif
|
||
|
|
const codecvt_type&);
|
||
|
|
|
||
|
|
// non-contiguous containers without codecvt
|
||
|
|
template <class Container, class U> inline
|
||
|
|
// disable_if aids broken compilers (IBM, old GCC, etc.) and is harmless for
|
||
|
|
// conforming compilers. Replace by plain "void" at some future date (2012?)
|
||
|
|
typename boost::disable_if<boost::is_array<Container>, void>::type
|
||
|
|
dispatch(const Container & c, U& to)
|
||
|
|
{
|
||
|
|
if (c.size())
|
||
|
|
{
|
||
|
|
std::basic_string<typename Container::value_type> seq(c.begin(), c.end());
|
||
|
|
convert(seq.c_str(), seq.c_str()+seq.size(), to);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// c_str
|
||
|
|
template <class T, class U> inline
|
||
|
|
void dispatch(T * const & c_str, U& to)
|
||
|
|
{
|
||
|
|
// std::cout << "dispatch() const T *\n";
|
||
|
|
BOOST_ASSERT(c_str);
|
||
|
|
convert(c_str, to);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Note: there is no dispatch on C-style arrays because the array may
|
||
|
|
// contain a string smaller than the array size.
|
||
|
|
|
||
|
|
BOOST_FILESYSTEM_DECL
|
||
|
|
void dispatch(const directory_entry & de,
|
||
|
|
# ifdef BOOST_WINDOWS_API
|
||
|
|
std::wstring & to
|
||
|
|
# else
|
||
|
|
std::string & to
|
||
|
|
# endif
|
||
|
|
);
|
||
|
|
|
||
|
|
|
||
|
|
}}} // namespace boost::filesystem::path_traits
|
||
|
|
|
||
|
|
#include <boost/config/abi_suffix.hpp> // pops abi_prefix.hpp pragmas
|
||
|
|
|
||
|
|
#endif // BOOST_FILESYSTEM_PATH_TRAITS_HPP
|