1//===- FileSystem.h -------------------------------------------------------===// 2// 3// The MCLinker Project 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// This file declares the mcld::sys::fs:: namespace. It follows TR2/boost 10// filesystem (v3), but modified to remove exception handling and the 11// path class. 12//===----------------------------------------------------------------------===// 13 14#ifndef MCLD_FILE_SYSTEM_H 15#define MCLD_FILE_SYSTEM_H 16#ifdef ENABLE_UNITTEST 17#include <gtest.h> 18#endif 19 20#include "mcld/Support/PathCache.h" 21#include <mcld/Config/Config.h> 22#include <string> 23#include <iosfwd> 24#include <locale> 25 26namespace mcld { 27namespace sys { 28 29namespace fs { 30 31enum FileType 32{ 33 StatusError, 34 StatusUnknown = StatusError, 35 FileNotFound, 36 RegularFile, 37 DirectoryFile, 38 SymlinkFile, 39 BlockFile, 40 CharacterFile, 41 FifoFile, 42 SocketFile, 43 ReparseFile, 44 TypeUnknown, 45 StatusKnown, 46 IsSymLink 47}; 48 49/** \class FileStatus 50 * \brief FileStatus 51 */ 52class FileStatus 53{ 54public: 55 FileStatus() 56 : m_Value(StatusError) {} 57 58 explicit FileStatus(FileType v) 59 : m_Value(v) {} 60 61 void setType(FileType v) { m_Value = v; } 62 FileType type() const { return m_Value; } 63 64private: 65 FileType m_Value; 66}; 67 68inline bool operator==(const FileStatus& rhs, const FileStatus& lhs) { 69 return rhs.type() == lhs.type(); 70} 71 72inline bool operator!=(const FileStatus& rhs, const FileStatus& lhs ) { 73 return !(rhs == lhs); 74} 75 76class Path; 77class DirIterator; 78class Directory; 79 80bool exists(const Path &pPath); 81bool is_directory(const Path &pPath); 82 83inline static bool exists(FileStatus f) { 84 return (f.type() != StatusError)&&(f.type() != FileNotFound); 85} 86 87inline static bool is_directory(FileStatus f) { 88 return f.type() == mcld::sys::fs::DirectoryFile; 89} 90 91namespace detail 92{ 93 94extern std::string static_library_extension; 95extern std::string shared_library_extension; 96extern std::string executable_extension; 97extern std::string relocatable_extension; 98extern std::string assembly_extension; 99extern std::string bitcode_extension; 100 101size_t canonicalize(std::string& pPathName); 102bool not_found_error(int perrno); 103void status(const Path& p, FileStatus& pFileStatus); 104void symlink_status(const Path& p, FileStatus& pFileStatus); 105mcld::sys::fs::PathCache::entry_type* bring_one_into_cache(DirIterator& pIter); 106void open_dir(Directory& pDir); 107void close_dir(Directory& pDir); 108void get_pwd(std::string& pPWD); 109 110int open(const Path& pPath, int pOFlag); 111int open(const Path& pPath, int pOFlag, int pPermission); 112ssize_t pread(int pFD, void* pBuf, size_t pCount, size_t pOffset); 113ssize_t pwrite(int pFD, const void* pBuf, size_t pCount, size_t pOffset); 114int ftruncate(int pFD, size_t pLength); 115 116} // namespace of detail 117} // namespace of fs 118} // namespace of sys 119} // namespace of mcld 120 121#endif 122 123