Merge pull request #10502 from ydb-platform/mergelibs-241016-1210

Library import 241016-1210

1 files changed, 187 insertions, 0 deletions

diff --git a/contrib/restricted/boost/filesystem/src/path_traits.cpp b/contrib/restricted/boost/filesystem/src/path_traits.cpp
new file mode 100644
index 0000000000..9a68f25872
--- /dev/null
+++ b/contrib/restricted/boost/filesystem/src/path_traits.cpp
@@ -0,0 +1,187 @@
+//  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
+
+//--------------------------------------------------------------------------------------//
+
+#include "platform_config.hpp"
+
+#include <boost/filesystem/config.hpp>
+#include <boost/filesystem/detail/path_traits.hpp>
+#include <boost/filesystem/path.hpp>
+#include <boost/system/system_error.hpp>
+#include <boost/assert.hpp>
+#include <memory>
+#include <string>
+#include <locale>  // for codecvt_base::result
+#include <cwchar>  // for mbstate_t
+#include <cstddef>
+
+#include <boost/filesystem/detail/header.hpp> // must be the last #include
+
+namespace pt = boost::filesystem::detail::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 {
+
+BOOST_CONSTEXPR_OR_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, pt::codecvt_type const& 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, pt::codecvt_type const& 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 detail {
+namespace path_traits {
+
+//--------------------------------------------------------------------------------------//
+//                          convert const char* to wstring                              //
+//--------------------------------------------------------------------------------------//
+
+BOOST_FILESYSTEM_DECL
+void convert(const char* from, const char* from_end, std::wstring& to, const codecvt_type* cvt)
+{
+    if (from == from_end)
+        return;
+
+    BOOST_ASSERT(from != nullptr);
+    BOOST_ASSERT(from_end != nullptr);
+
+    if (!cvt)
+        cvt = &fs::path::codecvt();
+
+    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)
+    {
+        std::unique_ptr< 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, std::string& to, const codecvt_type* cvt)
+{
+    if (from == from_end)
+        return;
+
+    BOOST_ASSERT(from != nullptr);
+    BOOST_ASSERT(from_end != nullptr);
+
+    if (!cvt)
+        cvt = &fs::path::codecvt();
+
+    //  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)
+    {
+        std::unique_ptr< 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 path_traits
+} // namespace detail
+} // namespace filesystem
+} // namespace boost
+
+#include <boost/filesystem/detail/footer.hpp>