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#pragma once
#include <util/generic/flags.h>
#include <util/generic/string.h>
#include <util/generic/yexception.h>
namespace NFs {
enum EFilePermission {
FP_ALL_EXEC = 01,
FP_ALL_WRITE = 02,
FP_ALL_READ = 04,
FP_GROUP_READ = 040,
FP_GROUP_WRITE = 020,
FP_GROUP_EXEC = 010,
FP_OWNER_READ = 0400,
FP_OWNER_WRITE = 0200,
FP_OWNER_EXEC = 0100,
FP_COMMON_FILE = 0777,
FP_SECRET_FILE = 0700,
FP_NONSECRET_FILE = 0744,
};
Y_DECLARE_FLAGS(EFilePermissions, EFilePermission);
/// Remove a file or empty directory
///
/// @param[in] path Path to file or directory
/// @returns true on success or false otherwise
/// LastSystemError() is set in case of failure
bool Remove(const TString& path);
/// Remove a file or directory with contents
/// Does nothing if path does not exist
///
/// @param[in] path Path to file or directory
/// @throws
void RemoveRecursive(const TString& path);
/// Creates directory
///
/// @param[in] path Path to the directory
/// @param[in] mode Access permissions field; NOTE: ignored on win
/// @returns true on success or false otherwise
bool MakeDirectory(const TString& path, EFilePermissions mode);
/// Creates directory
///
/// @param[in] path Path to the directory
/// @returns true on success or false otherwise
/// NOTE: access permissions is set to 0777
inline bool MakeDirectory(const TString& path) {
return MakeDirectory(path, FP_COMMON_FILE);
}
/// Creates directory and all non-existings parents
///
/// @param[in] path Path to be created
/// @param[in] mode Access permissions field; NOTE: ignored on win
/// @param[in] alwaysCreate Throw if path already exists or failed to create
/// @returns true if target path created or exists (and directory)
bool MakeDirectoryRecursive(const TString& path, EFilePermissions mode, bool alwaysCreate);
/// Creates directory and all non-existings parents
///
/// @param[in] path Path to be created
/// @param[in] mode Access permissions field; NOTE: ignored on win
/// @returns true if target path created or exists (and directory)
inline bool MakeDirectoryRecursive(const TString& path, EFilePermissions mode) {
return MakeDirectoryRecursive(path, mode, false);
}
/// Creates directory and all non-existings parents
///
/// @param[in] path Path to be created
/// @returns true if target path created or exists (and directory)
inline bool MakeDirectoryRecursive(const TString& path) {
return MakeDirectoryRecursive(path, FP_COMMON_FILE, false);
}
/// Rename a file or directory.
/// Removes newPath if it exists
///
/// @param[in] oldPath Path to file or directory to rename
/// @param[in] newPath New path of file or directory
/// @returns true on success or false otherwise
/// LastSystemError() is set in case of failure
bool Rename(const TString& oldPath, const TString& newPath);
/// Creates a new directory entry for a file
/// or creates a new one with the same content
///
/// @param[in] existingPath Path to an existing file
/// @param[in] newPath New path of file
void HardLinkOrCopy(const TString& existingPath, const TString& newPath);
/// Creates a new directory entry for a file
///
/// @param[in] existingPath Path to an existing file
/// @param[in] newPath New path of file
/// @returns true if new link was created or false otherwise
/// LastSystemError() is set in case of failure
bool HardLink(const TString& existingPath, const TString& newPath);
/// Creates a symlink to a file
///
/// @param[in] targetPath Path to a target file
/// @param[in] linkPath Path of symlink
/// @returns true if new link was created or false otherwise
/// LastSystemError() is set in case of failure
bool SymLink(const TString& targetPath, const TString& linkPath);
/// Reads value of a symbolic link
///
/// @param[in] path Path to a symlink
/// @returns File path that a symlink points to
TString ReadLink(const TString& path);
/// Append contents of a file to a new file
///
/// @param[in] dstPath Path to a destination file
/// @param[in] srcPath Path to a source file
void Cat(const TString& dstPath, const TString& srcPath);
/// Copy contents of a file to a new file
///
/// @param[in] existingPath Path to an existing file
/// @param[in] newPath New path of file
void Copy(const TString& existingPath, const TString& newPath);
/// Returns path to the current working directory
///
/// Note: is not threadsafe
TString CurrentWorkingDirectory();
/// Changes current working directory
///
/// @param[in] path Path for new cwd
/// Note: is not threadsafe
void SetCurrentWorkingDirectory(const TString& path);
/// Checks if file exists
///
/// @param[in] path Path to check
bool Exists(const TString& path);
/// Ensures that file exists
///
/// @param[in] path Path to check
/// @returns input argument
inline const TString& EnsureExists(const TString& path) {
Y_ENSURE_EX(Exists(path), TFileError{} << "Path " << path << " does not exists (checked from cwd:" << NFs::CurrentWorkingDirectory() << ")");
return path;
}
}
Y_DECLARE_OPERATORS_FOR_FLAGS(NFs::EFilePermissions);
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