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 <string> 22 #include <iosfwd> 23 #include <locale> 24 25 namespace mcld { 26 namespace sys { 27 namespace fs { 28 29 enum FileType 30 { 31 StatusError, 32 StatusUnknown = StatusError, 33 FileNotFound, 34 RegularFile, 35 DirectoryFile, 36 SymlinkFile, 37 BlockFile, 38 CharacterFile, 39 FifoFile, 40 SocketFile, 41 ReparseFile, 42 TypeUnknown, 43 StatusKnown, 44 IsSymLink 45 }; 46 47 /** \class FileStatus 48 * \brief FileStatus 49 */ 50 class FileStatus 51 { 52 public: 53 FileStatus() 54 : m_Value(StatusError) {} 55 56 explicit FileStatus(FileType v) 57 : m_Value(v) {} 58 59 void setType(FileType v) { m_Value = v; } 60 FileType type() const { return m_Value; } 61 62 private: 63 FileType m_Value; 64 }; 65 66 inline bool operator==(const FileStatus& rhs, const FileStatus& lhs) { 67 return rhs.type() == lhs.type(); 68 } 69 70 inline bool operator!=(const FileStatus& rhs, const FileStatus& lhs ) { 71 return !(rhs == lhs); 72 } 73 74 class Path; 75 class DirIterator; 76 class Directory; 77 78 bool exists(const Path &pPath); 79 bool is_directory(const Path &pPath); 80 81 inline static bool exists(FileStatus f) { 82 return (f.type() != StatusError)&&(f.type() != FileNotFound); 83 } 84 85 inline static bool is_directory(FileStatus f) { 86 return f.type() == mcld::sys::fs::DirectoryFile; 87 } 88 89 namespace detail 90 { 91 92 typedef unsigned char* Address; 93 typedef off_t Offset; 94 extern std::string static_library_extension; 95 extern std::string shared_library_extension; 96 extern std::string executable_extension; 97 extern std::string relocatable_extension; 98 extern std::string assembly_extension; 99 extern std::string bitcode_extension; 100 101 size_t canonicalize(std::string& pPathName); 102 bool not_found_error(int perrno); 103 void status(const Path& p, FileStatus& pFileStatus); 104 void symlink_status(const Path& p, FileStatus& pFileStatus); 105 mcld::sys::fs::PathCache::entry_type* bring_one_into_cache(DirIterator& pIter); 106 void open_dir(Directory& pDir); 107 void close_dir(Directory& pDir); 108 void get_pwd(std::string& pPWD); 109 size_t pread(int pFD, Address pBuf, size_t pCount, off_t pOffset); 110 size_t pwrite(int pFD, const Address pBuf, size_t pCount, off_t pOffset); 111 char *strerror(int pErrnum); 112 113 } // namespace of detail 114 } // namespace of fs 115 } // namespace of sys 116 } // namespace of mcld 117 118 #endif 119 120
