userver
C++ Async Framework
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open_mode.hpp
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#
pragma
once
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/// @file userver/fs/blocking/open_mode.hpp
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/// @brief @copybrief fs::blocking::OpenMode
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/// @ingroup userver_universal
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#
include
<
userver
/
utils
/
flags
.
hpp
>
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USERVER_NAMESPACE_BEGIN
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namespace
fs::
blocking
{
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enum
class
OpenFlag
{
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kNone = 0,
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/// Open the file for reading. Reading starts at the beginning of the file.
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/// At least one of `kRead`, `kWrite` must be set.
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kRead
= 1 << 0,
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/// Open the file for writing. Writing starts at the beginning of the file.
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/// By default, the file won't be created if it doesn't already exist.
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/// At least one of `kRead`, `kWrite` must be set.
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kWrite
= 1 << 1,
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/// Used together with `kWrite` to create an empty file and open it
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/// for writing if it doesn't already exist.
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kCreateIfNotExists
= 1 << 2,
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/// Differs from `kCreateIfNotExists` in that it ensures that the 'open'
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/// operation creates the file.
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kExclusiveCreate
= 1 << 3,
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/// Used together with `kWrite` to clear the contents of the file in case it
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/// already exists.
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kTruncate
= 1 << 4,
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/// Used together with `kWrite` to open file for writing to the end of the
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/// file.
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kAppend
= 1 << 5,
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};
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/// A set of OpenFlags
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using
OpenMode = utils::Flags<
OpenFlag
>;
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}
// namespace fs::blocking
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USERVER_NAMESPACE_END
userver
fs
blocking
open_mode.hpp
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