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Diffstat (limited to 'libs/usvfs/src/shared/stringcast.h')
| -rw-r--r-- | libs/usvfs/src/shared/stringcast.h | 170 |
1 files changed, 0 insertions, 170 deletions
diff --git a/libs/usvfs/src/shared/stringcast.h b/libs/usvfs/src/shared/stringcast.h deleted file mode 100644 index 0ce56d1..0000000 --- a/libs/usvfs/src/shared/stringcast.h +++ /dev/null @@ -1,170 +0,0 @@ -/* -Userspace Virtual Filesystem - -Copyright (C) 2015 Sebastian Herbord. All rights reserved. - -This file is part of usvfs. - -usvfs is free software: you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation, either version 3 of the License, or -(at your option) any later version. - -usvfs is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with usvfs. If not, see <http://www.gnu.org/licenses/>. -*/ -#pragma once - -#include "exceptionex.h" - -namespace usvfs::shared -{ - -enum class CodePage -{ - LOCAL, - LATIN1, - UTF8 -}; - -template <typename ToT, typename FromT> -class string_cast_impl -{ -public: - static ToT cast(const FromT& source, CodePage codePage, size_t sourceLength); -}; - -template <typename ToT, typename FromT> -ToT string_cast(FromT source, CodePage codePage = CodePage::LOCAL, - size_t sourceLength = std::numeric_limits<size_t>::max()) -{ - return string_cast_impl<ToT, FromT>::cast(source, codePage, sourceLength); -} - -template <typename ToT, typename CharT> -class string_cast_impl<ToT, std::basic_string<CharT>> -{ -public: - static ToT cast(const std::basic_string<CharT>& source, CodePage codePage, - size_t sourceLength) - { - return string_cast_impl<ToT, const CharT*>::cast(source.c_str(), codePage, - sourceLength); - } -}; - -template <typename ToT, typename CharT> -class string_cast_impl<ToT, CharT*> -{ - BOOST_STATIC_ASSERT(!boost::is_base_and_derived<ToT, CharT>::value); - -public: - static ToT cast(CharT* source, CodePage codePage, size_t sourceLength) - { - return string_cast_impl<ToT, const CharT*>::cast(source, codePage, sourceLength); - } -}; - -template <typename ToT, typename CharT, int N> -class string_cast_impl<ToT, CharT[N]> -{ -public: - static ToT cast(CharT (&source)[N], CodePage codePage, size_t sourceLength) - { - return string_cast_impl<ToT, const CharT*>::cast(source, codePage, sourceLength); - } -}; - -UINT windowsCP(CodePage codePage); - -template <> -class string_cast_impl<std::string, const wchar_t*> -{ -public: - static std::string cast(const wchar_t* const& source, CodePage codePage, - size_t sourceLength) - { - std::string result; - - if (sourceLength == std::numeric_limits<size_t>::max()) { - sourceLength = wcslen(source); - } - - if (sourceLength > 0) { - // use utf8 or local 8-bit encoding depending on user choice - UINT cp = windowsCP(codePage); - // preflight to find out the required buffer size - int outLength = WideCharToMultiByte(cp, 0, source, static_cast<int>(sourceLength), - nullptr, 0, nullptr, nullptr); - if (outLength == 0) { - throw windows_error("string conversion failed"); - } - result.resize(outLength); - outLength = WideCharToMultiByte(cp, 0, source, static_cast<int>(sourceLength), - &result[0], outLength, nullptr, nullptr); - if (outLength == 0) { - throw windows_error("string conversion failed"); - } - // fix output string length (i.e. in case of unconvertible characters - while (result[outLength - 1] == L'\0') { - result.resize(--outLength); - } - } - - return result; - } -}; - -template <> -class string_cast_impl<std::wstring, const char*> -{ -public: - static std::wstring cast(const char* const& source, CodePage codePage, - size_t sourceLength) - { - std::wstring result; - - if (sourceLength == std::numeric_limits<size_t>::max()) { - sourceLength = strlen(source); - } - - if (sourceLength > 0) { - // use utf8 or local 8-bit encoding depending on user choice - UINT cp = windowsCP(codePage); - // preflight to find out the required source size - int outLength = MultiByteToWideChar(cp, 0, source, static_cast<int>(sourceLength), - &result[0], 0); - if (outLength == 0) { - throw windows_error("string conversion failed"); - } - result.resize(outLength); - outLength = MultiByteToWideChar(cp, 0, source, static_cast<int>(sourceLength), - &result[0], outLength); - if (outLength == 0) { - throw windows_error("string conversion failed"); - } - while (result[outLength - 1] == L'\0') { - result.resize(--outLength); - } - } - - return result; - } -}; - -template <> -class string_cast_impl<std::wstring, const wchar_t*> -{ -public: - static std::wstring cast(const wchar_t* const& source, CodePage, size_t) - { - return std::wstring(source); - } -}; - -} // namespace usvfs::shared |
