write.hpp File Reference

Detailed Description

filesystem write functions

Definition in file write.hpp.

Go to the source code of this file.

#include <string>
#include <userver/engine/task/task_processor_fwd.hpp>
#include <userver/utils/boost_filesystem_file_status.hpp>

Namespaces
namespace	fs
	filesystem support

Functions
void	fs::RewriteFileContents (engine::TaskProcessor &async_tp, const std::string &path, std::string_view contents)
	Rewrite file contents asynchronously It doesn't provide strict atomic guarantees. If you need them, use fs::RewriteFileContentsAtomically.
void	fs::Rename (engine::TaskProcessor &async_tp, const std::string &source, const std::string &destination)
	Renames existing file.
void	fs::RewriteFileContentsAtomically (engine::TaskProcessor &async_tp, const std::string &path, std::string_view contents, boost::filesystem::perms perms)
	Rewrite file contents atomically Write contents to temporary file in the same directory, then atomically replaces the destination file with the temporary file. Effectively does write()+sync()+rename()+sync(directory). It does both sync(2) for file and on the directory, so after successful return the file must persist on the filesystem.
void	fs::Chmod (engine::TaskProcessor &async_tp, const std::string &path, boost::filesystem::perms perms)
	Change file mode.
bool	fs::RemoveSingleFile (engine::TaskProcessor &async_tp, const std::string &path)
	Remove existing file.
void	fs::CreateDirectories (engine::TaskProcessor &async_tp, std::string_view path, boost::filesystem::perms perms)
	Create directory and all necessary parent elements. Condition when path already exists and is a directory treated as "success" and no exception is thrown.
void	fs::CreateDirectories (engine::TaskProcessor &async_tp, std::string_view path)