diff options
Diffstat (limited to 'common/alfstream.cpp')
-rw-r--r-- | common/alfstream.cpp | 138 |
1 files changed, 7 insertions, 131 deletions
diff --git a/common/alfstream.cpp b/common/alfstream.cpp index 3beda833..8991ce03 100644 --- a/common/alfstream.cpp +++ b/common/alfstream.cpp @@ -9,141 +9,17 @@ namespace al { -auto filebuf::underflow() -> int_type -{ - if(mFile != INVALID_HANDLE_VALUE && gptr() == egptr()) - { - // Read in the next chunk of data, and set the pointers on success - DWORD got{}; - if(ReadFile(mFile, mBuffer.data(), static_cast<DWORD>(mBuffer.size()), &got, nullptr)) - setg(mBuffer.data(), mBuffer.data(), mBuffer.data()+got); - } - if(gptr() == egptr()) - return traits_type::eof(); - return traits_type::to_int_type(*gptr()); -} - -auto filebuf::seekoff(off_type offset, std::ios_base::seekdir whence, std::ios_base::openmode mode) -> pos_type -{ - if(mFile == INVALID_HANDLE_VALUE || (mode&std::ios_base::out) || !(mode&std::ios_base::in)) - return traits_type::eof(); - - LARGE_INTEGER fpos{}; - switch(whence) - { - case std::ios_base::beg: - fpos.QuadPart = offset; - if(!SetFilePointerEx(mFile, fpos, &fpos, FILE_BEGIN)) - return traits_type::eof(); - break; - - case std::ios_base::cur: - // If the offset remains in the current buffer range, just - // update the pointer. - if((offset >= 0 && offset < off_type(egptr()-gptr())) || - (offset < 0 && -offset <= off_type(gptr()-eback()))) - { - // Get the current file offset to report the correct read - // offset. - fpos.QuadPart = 0; - if(!SetFilePointerEx(mFile, fpos, &fpos, FILE_CURRENT)) - return traits_type::eof(); - setg(eback(), gptr()+offset, egptr()); - return fpos.QuadPart - off_type(egptr()-gptr()); - } - // Need to offset for the file offset being at egptr() while - // the requested offset is relative to gptr(). - offset -= off_type(egptr()-gptr()); - fpos.QuadPart = offset; - if(!SetFilePointerEx(mFile, fpos, &fpos, FILE_CURRENT)) - return traits_type::eof(); - break; - - case std::ios_base::end: - fpos.QuadPart = offset; - if(!SetFilePointerEx(mFile, fpos, &fpos, FILE_END)) - return traits_type::eof(); - break; - - default: - return traits_type::eof(); - } - setg(nullptr, nullptr, nullptr); - return fpos.QuadPart; -} - -auto filebuf::seekpos(pos_type pos, std::ios_base::openmode mode) -> pos_type -{ - // Simplified version of seekoff - if(mFile == INVALID_HANDLE_VALUE || (mode&std::ios_base::out) || !(mode&std::ios_base::in)) - return traits_type::eof(); - - LARGE_INTEGER fpos{}; - fpos.QuadPart = pos; - if(!SetFilePointerEx(mFile, fpos, &fpos, FILE_BEGIN)) - return traits_type::eof(); - - setg(nullptr, nullptr, nullptr); - return fpos.QuadPart; -} - -filebuf::~filebuf() -{ close(); } - -bool filebuf::open(const wchar_t *filename, std::ios_base::openmode mode) -{ - if((mode&std::ios_base::out) || !(mode&std::ios_base::in)) - return false; - HANDLE f{CreateFileW(filename, GENERIC_READ, FILE_SHARE_READ, nullptr, OPEN_EXISTING, - FILE_ATTRIBUTE_NORMAL, nullptr)}; - if(f == INVALID_HANDLE_VALUE) return false; - - if(mFile != INVALID_HANDLE_VALUE) - CloseHandle(mFile); - mFile = f; - - setg(nullptr, nullptr, nullptr); - return true; -} -bool filebuf::open(const char *filename, std::ios_base::openmode mode) -{ - std::wstring wname{utf8_to_wstr(filename)}; - return open(wname.c_str(), mode); -} - -void filebuf::close() -{ - if(mFile != INVALID_HANDLE_VALUE) - CloseHandle(mFile); - mFile = INVALID_HANDLE_VALUE; -} - - -ifstream::ifstream(const wchar_t *filename, std::ios_base::openmode mode) - : std::istream{nullptr} -{ - init(&mStreamBuf); - - // Set the failbit if the file failed to open. - if((mode&std::ios_base::out) || !mStreamBuf.open(filename, mode|std::ios_base::in)) - clear(failbit); -} - ifstream::ifstream(const char *filename, std::ios_base::openmode mode) - : std::istream{nullptr} -{ - init(&mStreamBuf); + : std::ifstream{utf8_to_wstr(filename).c_str(), mode} +{ } - // Set the failbit if the file failed to open. - if((mode&std::ios_base::out) || !mStreamBuf.open(filename, mode|std::ios_base::in)) - clear(failbit); +void ifstream::open(const char *filename, std::ios_base::openmode mode) +{ + std::wstring wstr{utf8_to_wstr(filename)}; + std::ifstream::open(wstr.c_str(), mode); } -/* This is only here to ensure the compiler doesn't define an implicit - * destructor, which it tries to automatically inline and subsequently complain - * it can't inline without excessive code growth. - */ -ifstream::~ifstream() { } +ifstream::~ifstream() = default; } // namespace al |