Swiftdiff options
Diffstat (limited to '3rdParty/Boost/src/libs/filesystem/src/path_traits.cpp')
| -rw-r--r-- | 3rdParty/Boost/src/libs/filesystem/src/path_traits.cpp | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/libs/filesystem/src/path_traits.cpp b/3rdParty/Boost/src/libs/filesystem/src/path_traits.cpp new file mode 100644 index 0000000..06ac798 --- /dev/null +++ b/3rdParty/Boost/src/libs/filesystem/src/path_traits.cpp @@ -0,0 +1,200 @@ +// filesystem path_traits.cpp --------------------------------------------------------// + +// Copyright Beman Dawes 2008, 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 + +//--------------------------------------------------------------------------------------// + +// define BOOST_FILESYSTEM_SOURCE so that <boost/system/config.hpp> knows +// the library is being built (possibly exporting rather than importing code) +#define BOOST_FILESYSTEM_SOURCE + +#ifndef BOOST_SYSTEM_NO_DEPRECATED +# define BOOST_SYSTEM_NO_DEPRECATED +#endif + +#include <boost/filesystem/config.hpp> +#include <boost/filesystem/path_traits.hpp> +#include <boost/system/system_error.hpp> +#include <boost/scoped_array.hpp> +#include <locale> // for codecvt_base::result +#include <cstring> // for strlen +#include <cwchar> // for wcslen + +namespace pt = boost::filesystem::path_traits; +namespace fs = boost::filesystem; +namespace bs = boost::system; + +//--------------------------------------------------------------------------------------// +// configuration // +//--------------------------------------------------------------------------------------// + +#ifndef BOOST_FILESYSTEM_CODECVT_BUF_SIZE +# define BOOST_FILESYSTEM_CODECVT_BUF_SIZE 256 +#endif + +namespace { + + const std::size_t default_codecvt_buf_size = BOOST_FILESYSTEM_CODECVT_BUF_SIZE; + + +//--------------------------------------------------------------------------------------// +// // +// The public convert() functions do buffer management, and then forward to the // +// convert_aux() functions for the actual call to the codecvt facet. // +// // +//--------------------------------------------------------------------------------------// + +//--------------------------------------------------------------------------------------// +// convert_aux const char* to wstring // +//--------------------------------------------------------------------------------------// + + void convert_aux( + const char* from, + const char* from_end, + wchar_t* to, wchar_t* to_end, + std::wstring & target, + const pt::codecvt_type & cvt) + { + //std::cout << std::hex + // << " from=" << std::size_t(from) + // << " from_end=" << std::size_t(from_end) + // << " to=" << std::size_t(to) + // << " to_end=" << std::size_t(to_end) + // << std::endl; + + std::mbstate_t state = std::mbstate_t(); // perhaps unneeded, but cuts bug reports + const char* from_next; + wchar_t* to_next; + + std::codecvt_base::result res; + + if ((res=cvt.in(state, from, from_end, from_next, + to, to_end, to_next)) != std::codecvt_base::ok) + { + //std::cout << " result is " << static_cast<int>(res) << std::endl; + BOOST_FILESYSTEM_THROW(bs::system_error(res, fs::codecvt_error_category(), + "boost::filesystem::path codecvt to wstring")); + } + target.append(to, to_next); + } + +//--------------------------------------------------------------------------------------// +// convert_aux const wchar_t* to string // +//--------------------------------------------------------------------------------------// + + void convert_aux( + const wchar_t* from, + const wchar_t* from_end, + char* to, char* to_end, + std::string & target, + const pt::codecvt_type & cvt) + { + //std::cout << std::hex + // << " from=" << std::size_t(from) + // << " from_end=" << std::size_t(from_end) + // << " to=" << std::size_t(to) + // << " to_end=" << std::size_t(to_end) + // << std::endl; + + std::mbstate_t state = std::mbstate_t(); // perhaps unneeded, but cuts bug reports + const wchar_t* from_next; + char* to_next; + + std::codecvt_base::result res; + + if ((res=cvt.out(state, from, from_end, from_next, + to, to_end, to_next)) != std::codecvt_base::ok) + { + //std::cout << " result is " << static_cast<int>(res) << std::endl; + BOOST_FILESYSTEM_THROW(bs::system_error(res, fs::codecvt_error_category(), + "boost::filesystem::path codecvt to string")); + } + target.append(to, to_next); + } + +} // unnamed namespace + +//--------------------------------------------------------------------------------------// +// path_traits // +//--------------------------------------------------------------------------------------// + +namespace boost { namespace filesystem { namespace path_traits { + +//--------------------------------------------------------------------------------------// +// convert const char* to wstring // +//--------------------------------------------------------------------------------------// + + 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_ASSERT(from); + + if (!from_end) // null terminated + { + from_end = from + std::strlen(from); + } + + if (from == from_end) return; + + std::size_t buf_size = (from_end - from) * 3; // perhaps too large, but that's OK + + // dynamically allocate a buffer only if source is unusually large + if (buf_size > default_codecvt_buf_size) + { + boost::scoped_array< wchar_t > buf(new wchar_t [buf_size]); + convert_aux(from, from_end, buf.get(), buf.get()+buf_size, to, cvt); + } + else + { + wchar_t buf[default_codecvt_buf_size]; + convert_aux(from, from_end, buf, buf+default_codecvt_buf_size, to, cvt); + } + } + +//--------------------------------------------------------------------------------------// +// convert const wchar_t* to string // +//--------------------------------------------------------------------------------------// + + 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) + { + BOOST_ASSERT(from); + + if (!from_end) // null terminated + { + from_end = from + std::wcslen(from); + } + + if (from == from_end) return; + + // The codecvt length functions may not be implemented, and I don't really + // understand them either. Thus this code is just a guess; if it turns + // out the buffer is too small then an error will be reported and the code + // will have to be fixed. + std::size_t buf_size = (from_end - from) * 4; // perhaps too large, but that's OK + buf_size += 4; // encodings like shift-JIS need some prefix space + + // dynamically allocate a buffer only if source is unusually large + if (buf_size > default_codecvt_buf_size) + { + boost::scoped_array< char > buf(new char [buf_size]); + convert_aux(from, from_end, buf.get(), buf.get()+buf_size, to, cvt); + } + else + { + char buf[default_codecvt_buf_size]; + convert_aux(from, from_end, buf, buf+default_codecvt_buf_size, to, cvt); + } + } +}}} // namespace boost::filesystem::path_traits |