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path_spec.hpp
1//
2// Copyright 2007-2008 Andreas Pokorny, Christian Henning
3//
4// Distributed under the Boost Software License, Version 1.0
5// See accompanying file LICENSE_1_0.txt or copy at
6// http://www.boost.org/LICENSE_1_0.txt
7//
8#ifndef BOOST_GIL_IO_PATH_SPEC_HPP
9#define BOOST_GIL_IO_PATH_SPEC_HPP
10
11#include <boost/gil/io/detail/filesystem.hpp>
12
13#include <cstdlib>
14#include <string>
15#include <type_traits>
16
17 namespace boost { namespace gil { namespace detail {
18
19 template<typename P> struct is_supported_path_spec : std::false_type {};
20 template<> struct is_supported_path_spec< std::string > : std::true_type {};
21 template<> struct is_supported_path_spec< const std::string > : std::true_type {};
22 template<> struct is_supported_path_spec< std::wstring > : std::true_type {};
23 template<> struct is_supported_path_spec< const std::wstring > : std::true_type {};
24 template<> struct is_supported_path_spec< char const* > : std::true_type {};
25 template<> struct is_supported_path_spec< char* > : std::true_type {};
26 template<> struct is_supported_path_spec< const wchar_t* > : std::true_type {};
27 template<> struct is_supported_path_spec< wchar_t* > : std::true_type {};
28
29 template<int i> struct is_supported_path_spec<const char [i]> : std::true_type {};
30 template<int i> struct is_supported_path_spec<char [i]> : std::true_type {};
31 template<int i> struct is_supported_path_spec<const wchar_t [i]> : std::true_type {};
32 template<int i> struct is_supported_path_spec<wchar_t [i]> : std::true_type {};
33
34 template<> struct is_supported_path_spec<filesystem::path> : std::true_type {};
35 template<> struct is_supported_path_spec<filesystem::path const> : std::true_type {};
36
37 inline std::string convert_to_string( std::string const& obj)
38{
39 return obj;
40}
41
42 inline std::string convert_to_string( std::wstring const& s )
43{
44 std::size_t len = wcslen( s.c_str() );
45 char* c = reinterpret_cast<char*>( alloca( len ));
46 wcstombs( c, s.c_str(), len );
47
48 return std::string( c, c + len );
49}
50
51 inline std::string convert_to_string( char const* str )
52{
53 return std::string( str );
54}
55
56 inline std::string convert_to_string( char* str )
57{
58 return std::string( str );
59}
60
61 inline std::string convert_to_string(filesystem::path const& path)
62{
63 return convert_to_string(path.string());
64}
65
66 inline char const* convert_to_native_string( char* str )
67{
68 return str;
69}
70
71 inline char const* convert_to_native_string( char const* str )
72{
73 return str;
74}
75
76 inline char const* convert_to_native_string( const std::string& str )
77{
78 return str.c_str();
79}
80
81 inline char const* convert_to_native_string( const wchar_t* str )
82{
83 std::size_t len = wcslen( str ) + 1;
84 char* c = new char[len];
85 wcstombs( c, str, len );
86
87 return c;
88}
89
90 inline char const* convert_to_native_string( std::wstring const& str )
91{
92 std::size_t len = wcslen( str.c_str() ) + 1;
93 char* c = new char[len];
94 wcstombs( c, str.c_str(), len );
95
96 return c;
97}
98
99}}} // namespace boost::gil::detail
100
101#endif
boost
defined(BOOST_NO_CXX17_HDR_MEMORY_RESOURCE)
Definition: algorithm.hpp:36