blob: 28dc5637f469ce19cb1640caa76bc48faa8d305d [file] [log] [blame]
//===- FileSystem.h -------------------------------------------------------===//
//
// The MCLinker Project
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// This file declares the mcld::sys::fs:: namespace. It follows TR2/boost
// filesystem (v3), but modified to remove exception handling and the
// path class.
//===----------------------------------------------------------------------===//
#ifndef MCLD_FILE_SYSTEM_H
#define MCLD_FILE_SYSTEM_H
#ifdef ENABLE_UNITTEST
#include <gtest.h>
#endif
#include "mcld/Support/PathCache.h"
#include <string>
#include <iosfwd>
#include <locale>
namespace mcld {
namespace sys {
namespace fs {
enum FileType
{
StatusError,
StatusUnknown = StatusError,
FileNotFound,
RegularFile,
DirectoryFile,
SymlinkFile,
BlockFile,
CharacterFile,
FifoFile,
SocketFile,
ReparseFile,
TypeUnknown,
StatusKnown,
IsSymLink
};
/** \class FileStatus
* \brief FileStatus
*/
class FileStatus
{
public:
FileStatus()
: m_Value(StatusError) {}
explicit FileStatus(FileType v)
: m_Value(v) {}
void setType(FileType v) { m_Value = v; }
FileType type() const { return m_Value; }
private:
FileType m_Value;
};
inline bool operator==(const FileStatus& rhs, const FileStatus& lhs) {
return rhs.type() == lhs.type();
}
inline bool operator!=(const FileStatus& rhs, const FileStatus& lhs ) {
return !(rhs == lhs);
}
class Path;
class DirIterator;
class Directory;
bool exists(const Path &pPath);
bool is_directory(const Path &pPath);
inline static bool exists(FileStatus f) {
return (f.type() != StatusError)&&(f.type() != FileNotFound);
}
inline static bool is_directory(FileStatus f) {
return f.type() == mcld::sys::fs::DirectoryFile;
}
namespace detail
{
typedef unsigned char* Address;
typedef off_t Offset;
extern std::string static_library_extension;
extern std::string shared_library_extension;
extern std::string executable_extension;
extern std::string relocatable_extension;
extern std::string assembly_extension;
extern std::string bitcode_extension;
size_t canonicalize(std::string& pPathName);
bool not_found_error(int perrno);
void status(const Path& p, FileStatus& pFileStatus);
void symlink_status(const Path& p, FileStatus& pFileStatus);
mcld::sys::fs::PathCache::entry_type* bring_one_into_cache(DirIterator& pIter);
void open_dir(Directory& pDir);
void close_dir(Directory& pDir);
void get_pwd(std::string& pPWD);
size_t pread(int pFD, Address pBuf, size_t pCount, off_t pOffset);
size_t pwrite(int pFD, const Address pBuf, size_t pCount, off_t pOffset);
char *strerror(int pErrnum);
} // namespace of detail
} // namespace of fs
} // namespace of sys
} // namespace of mcld
#endif