112 lines
2.7 KiB
C++
112 lines
2.7 KiB
C++
/* Copyright (c) 2010 Wildfire Games
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* simple POSIX file wrapper.
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*/
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#ifndef INCLUDED_FILE
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#define INCLUDED_FILE
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namespace ERR
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{
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const LibError FILE_ACCESS = -110300;
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const LibError IO = -110301;
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}
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namespace FileImpl
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{
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LIB_API LibError Open(const fs::wpath& pathname, wchar_t mode, int& fd);
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LIB_API void Close(int& fd);
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LIB_API LibError IO(int fd, wchar_t mode, off_t ofs, u8* buf, size_t size);
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LIB_API LibError Issue(aiocb& req, int fd, wchar_t mode, off_t alignedOfs, u8* alignedBuf, size_t alignedSize);
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LIB_API LibError WaitUntilComplete(aiocb& req, u8*& alignedBuf, size_t& alignedSize);
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}
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class File
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{
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NONCOPYABLE(File);
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public:
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File()
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: m_pathname(), m_fd(0)
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{
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}
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LibError Open(const fs::wpath& pathname, wchar_t mode)
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{
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RETURN_ERR(FileImpl::Open(pathname, mode, m_fd));
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m_pathname = pathname;
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m_mode = mode;
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return INFO::OK;
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}
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void Close()
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{
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FileImpl::Close(m_fd);
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}
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File(const fs::wpath& pathname, wchar_t mode)
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{
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(void)Open(pathname, mode);
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}
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~File()
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{
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Close();
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}
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const fs::wpath& Pathname() const
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{
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return m_pathname;
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}
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wchar_t Mode() const
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{
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return m_mode;
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}
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LibError Issue(aiocb& req, wchar_t mode, off_t alignedOfs, u8* alignedBuf, size_t alignedSize) const
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{
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return FileImpl::Issue(req, m_fd, mode, alignedOfs, alignedBuf, alignedSize);
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}
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LibError Write(off_t ofs, const u8* buf, size_t size)
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{
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return FileImpl::IO(m_fd, 'w', ofs, const_cast<u8*>(buf), size);
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}
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LibError Read(off_t ofs, u8* buf, size_t size) const
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{
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return FileImpl::IO(m_fd, 'r', ofs, buf, size);
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}
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private:
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fs::wpath m_pathname;
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int m_fd;
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wchar_t m_mode;
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};
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typedef shared_ptr<File> PFile;
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#endif // #ifndef INCLUDED_FILE
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