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#pragma once
#include "../Bitmask.h"
namespace cru::io {
namespace details {
struct OpenFileFlagTag {};
} // namespace details
using OpenFileFlag = Bitmask<details::OpenFileFlagTag>;
struct OpenFileFlags {
/**
* \brief for reading
* If the file does not exist, FileNotExistException should be thrown.
*/
static constexpr OpenFileFlag Read{0x1};
/**
* \brief for writing
* If the file does not exist and Create is not specified,
* FileNotExistException should be thrown.
*/
static constexpr OpenFileFlag Write{0x2};
/**
* \brief when writing, seek to end first
* Only effective for writing.
*/
static constexpr OpenFileFlag Append{0x4};
/**
* \brief when writing, truncate the file to empty
* Only effective for writing.
* So the content is erased! Be careful!
*/
static constexpr OpenFileFlag Truncate{0x8};
/**
* \brief when writing, if the file does not exist, create one
* Only effective for writing. When file does not exist, FileNotExistException
* will NOT be thrown and a new file will be created.
*/
static constexpr OpenFileFlag Create{0x10};
/**
* TODO: ???
*/
static constexpr OpenFileFlag Exclusive{0x20};
};
/**
* Append, Truncate, Create must be used with Write.
* Append and Truncate must not be used together.
*/
bool CheckOpenFileFlag(OpenFileFlag flags);
} // namespace cru::io
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