CMake/Source/cmArchiveWrite.h
Albert Astals Cid ae5e97a005 Delete some default constructors and assignment operators
They are unused, but if someone used them they would lead to
problems since they would copy the internal raw pointers
and the destructor would cause double delete
2019-02-15 07:25:47 -05:00

179 lines
4.6 KiB
C++

/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#ifndef cmArchiveWrite_h
#define cmArchiveWrite_h
#include "cmConfigure.h" // IWYU pragma: keep
#include <iosfwd>
#include <stddef.h>
#include <string>
#if !defined(CMAKE_BUILD_WITH_CMAKE)
# error "cmArchiveWrite not allowed during bootstrap build!"
#endif
template <typename T>
class cmArchiveWriteOptional
{
public:
cmArchiveWriteOptional() { this->Clear(); }
explicit cmArchiveWriteOptional(T val) { this->Set(val); }
void Set(T val)
{
this->IsValueSet = true;
this->Value = val;
}
void Clear() { this->IsValueSet = false; }
bool IsSet() const { return this->IsValueSet; }
T Get() const { return Value; }
private:
T Value;
bool IsValueSet;
};
/** \class cmArchiveWrite
* \brief Wrapper around libarchive for writing.
*
*/
class cmArchiveWrite
{
public:
/** Compression type. */
enum Compress
{
CompressNone,
CompressCompress,
CompressGZip,
CompressBZip2,
CompressLZMA,
CompressXZ
};
/** Construct with output stream to which to write archive. */
cmArchiveWrite(std::ostream& os, Compress c = CompressNone,
std::string const& format = "paxr");
~cmArchiveWrite();
cmArchiveWrite(const cmArchiveWrite&) = delete;
cmArchiveWrite& operator=(const cmArchiveWrite&) = delete;
/**
* Add a path (file or directory) to the archive. Directories are
* added recursively. The "path" must be readable on disk, either
* full path or relative to current working directory. The "skip"
* value indicates how many leading bytes from the input path to
* skip. The remaining part of the input path is appended to the
* "prefix" value to construct the final name in the archive.
*/
bool Add(std::string path, size_t skip = 0, const char* prefix = nullptr,
bool recursive = true);
/** Returns true if there has been no error. */
explicit operator bool() const { return this->Okay(); }
/** Returns true if there has been an error. */
bool operator!() const { return !this->Okay(); }
/** Return the error string; empty if none. */
std::string GetError() const { return this->Error; }
// TODO: More general callback instead of hard-coding calls to
// std::cout.
void SetVerbose(bool v) { this->Verbose = v; }
void SetMTime(std::string const& t) { this->MTime = t; }
//! Sets the permissions of the added files/folders
void SetPermissions(int permissions_)
{
this->Permissions.Set(permissions_);
}
//! Clears permissions - default is used instead
void ClearPermissions() { this->Permissions.Clear(); }
//! Sets the permissions mask of files/folders
//!
//! The permissions will be copied from the existing file
//! or folder. The mask will then be applied to unset
//! some of them
void SetPermissionsMask(int permissionsMask_)
{
this->PermissionsMask.Set(permissionsMask_);
}
//! Clears permissions mask - default is used instead
void ClearPermissionsMask() { this->PermissionsMask.Clear(); }
//! Sets UID and GID to be used in the tar file
void SetUIDAndGID(int uid_, int gid_)
{
this->Uid.Set(uid_);
this->Gid.Set(gid_);
}
//! Clears UID and GID to be used in the tar file - default is used instead
void ClearUIDAndGID()
{
this->Uid.Clear();
this->Gid.Clear();
}
//! Sets UNAME and GNAME to be used in the tar file
void SetUNAMEAndGNAME(const std::string& uname_, const std::string& gname_)
{
this->Uname = uname_;
this->Gname = gname_;
}
//! Clears UNAME and GNAME to be used in the tar file
//! default is used instead
void ClearUNAMEAndGNAME()
{
this->Uname = "";
this->Gname = "";
}
private:
bool Okay() const { return this->Error.empty(); }
bool AddPath(const char* path, size_t skip, const char* prefix,
bool recursive = true);
bool AddFile(const char* file, size_t skip, const char* prefix);
bool AddData(const char* file, size_t size);
struct Callback;
friend struct Callback;
class Entry;
std::ostream& Stream;
struct archive* Archive;
struct archive* Disk;
bool Verbose;
std::string Format;
std::string Error;
std::string MTime;
//! UID of the user in the tar file
cmArchiveWriteOptional<int> Uid;
//! GUID of the user in the tar file
cmArchiveWriteOptional<int> Gid;
//! UNAME/GNAME of the user (does not override UID/GID)
//!@{
std::string Uname;
std::string Gname;
//!@}
//! Permissions on files/folders
cmArchiveWriteOptional<int> Permissions;
cmArchiveWriteOptional<int> PermissionsMask;
};
#endif