| 1 | // directory_posix_windows.cpp ---------------------------------------------// |
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| 2 | |
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| 3 | // Copyright © 2002 Beman Dawes |
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| 4 | // Copyright © 2001 Dietmar Kühl |
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| 5 | // Use, modification, and distribution is subject to the Boost Software |
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| 6 | // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy |
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| 7 | // at http://www.boost.org/LICENSE_1_0.txt) |
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| 8 | |
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| 9 | // See library home page at http://www.boost.org/libs/filesystem |
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| 10 | |
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| 11 | //----------------------------------------------------------------------------// |
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| 12 | |
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| 13 | |
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| 14 | // The point of this implementation is to prove the interface. There is no |
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| 15 | // claim the implementation is efficient, follows good coding practice, etc. |
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| 16 | |
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| 17 | |
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| 18 | //----------------------------------------------------------------------------// |
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| 19 | |
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| 20 | // define BOOST_FILESYSTEM_SOURCE so that <boost/filesystem/config.hpp> knows |
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| 21 | // the library is being built (possibly exporting rather than importing code) |
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| 22 | #define BOOST_FILESYSTEM_SOURCE |
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| 23 | |
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| 24 | #define _FILE_OFFSET_BITS 64 // at worst, these defines may have no effect, |
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| 25 | #define __USE_FILE_OFFSET64 // but that is harmless on Windows and on POSIX |
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| 26 | // 64-bit systems or on 32-bit systems which don't have files larger |
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| 27 | // than can be represented by a traditional POSIX/UNIX off_t type. |
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| 28 | // OTOH, defining them should kick in 64-bit off_t's (and thus |
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| 29 | // st_size) on 32-bit systems that provide the Large File |
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| 30 | // Support (LFS) interface, such as Linux, Solaris, and IRIX. |
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| 31 | // The defines are given before any headers are included to |
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| 32 | // ensure that they are available to all included headers. |
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| 33 | // That is required at least on Solaris, and possibly on other |
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| 34 | // systems as well. |
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| 35 | |
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| 36 | #include <boost/filesystem/config.hpp> |
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| 37 | #include <boost/filesystem/operations.hpp> |
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| 38 | #include <boost/filesystem/exception.hpp> |
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| 39 | #include <boost/scoped_array.hpp> |
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| 40 | #include <boost/throw_exception.hpp> |
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| 41 | #include <boost/detail/workaround.hpp> |
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| 42 | |
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| 43 | namespace fs = boost::filesystem; |
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| 44 | |
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| 45 | // BOOST_POSIX or BOOST_WINDOWS specify which API to use. |
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| 46 | # if !defined( BOOST_WINDOWS ) && !defined( BOOST_POSIX ) |
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| 47 | # if defined(_WIN32) || defined(__WIN32__) || defined(WIN32) || defined(__CYGWIN__) |
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| 48 | # define BOOST_WINDOWS |
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| 49 | # else |
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| 50 | # define BOOST_POSIX |
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| 51 | # endif |
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| 52 | # endif |
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| 53 | |
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| 54 | # if defined(BOOST_WINDOWS) |
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| 55 | # include "windows.h" |
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| 56 | # if defined(__BORLANDC__) || defined(__MWERKS__) |
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| 57 | # if defined(__BORLANDC__) |
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| 58 | using std::time_t; |
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| 59 | # endif |
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| 60 | # include "utime.h" |
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| 61 | # else |
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| 62 | # include "sys/utime.h" |
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| 63 | # endif |
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| 64 | |
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| 65 | // For Windows, the xxxA form of various function names is used to avoid |
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| 66 | // inadvertently getting wide forms of the functions. (The undecorated |
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| 67 | // forms are actually macros, so can misfire if the user has various |
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| 68 | // other macros defined. There was a bug report of this happening.) |
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| 69 | |
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| 70 | # else // BOOST_POSIX |
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| 71 | # include <sys/types.h> |
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| 72 | # include "dirent.h" |
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| 73 | # include "unistd.h" |
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| 74 | # include "fcntl.h" |
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| 75 | # include "utime.h" |
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| 76 | # endif |
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| 77 | |
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| 78 | #include <sys/stat.h> // even on Windows some functions use stat() |
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| 79 | #include <string> |
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| 80 | #include <cstring> |
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| 81 | #include <cstdio> // for remove, rename |
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| 82 | #include <cerrno> |
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| 83 | #include <cassert> |
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| 84 | //#include <iostream> // for debugging only; comment out when not in use |
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| 85 | |
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| 86 | #ifdef BOOST_NO_STDC_NAMESPACE |
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| 87 | namespace std { using ::strcmp; using ::remove; using ::rename; } |
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| 88 | #endif |
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| 89 | |
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| 90 | #include <boost/config/abi_prefix.hpp> // must be the last header |
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| 91 | |
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| 92 | // helpers -----------------------------------------------------------------// |
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| 93 | |
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| 94 | namespace |
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| 95 | { |
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| 96 | #ifdef BOOST_POSIX |
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| 97 | |
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| 98 | # define BOOST_HANDLE DIR * |
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| 99 | # define BOOST_INVALID_HANDLE_VALUE 0 |
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| 100 | # define BOOST_SYSTEM_DIRECTORY_TYPE struct dirent |
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| 101 | |
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| 102 | inline const char * find_first_file( const char * dir, |
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| 103 | BOOST_HANDLE & handle, BOOST_SYSTEM_DIRECTORY_TYPE & ) |
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| 104 | // Returns: 0 if error, otherwise name |
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| 105 | { |
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| 106 | const char * dummy_first_name = "."; |
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| 107 | return ( (handle = ::opendir( dir )) |
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| 108 | == BOOST_INVALID_HANDLE_VALUE ) ? 0 : dummy_first_name; |
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| 109 | } |
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| 110 | |
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| 111 | inline void find_close( BOOST_HANDLE handle ) |
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| 112 | { |
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| 113 | assert( handle != BOOST_INVALID_HANDLE_VALUE ); |
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| 114 | ::closedir( handle ); |
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| 115 | } |
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| 116 | |
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| 117 | // warning: the only dirent member updated is d_name |
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| 118 | inline int readdir_r_simulator( DIR * dirp, struct dirent * entry, |
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| 119 | struct dirent ** result ) // *result set to 0 on end of directory |
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| 120 | { |
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| 121 | # if defined(_POSIX_THREAD_SAFE_FUNCTIONS) \ |
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| 122 | && defined(_SC_THREAD_SAFE_FUNCTIONS) \ |
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| 123 | && (_POSIX_THREAD_SAFE_FUNCTIONS+0 >= 0) \ |
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| 124 | && ( !defined(__HP_aCC) || ( defined(__HP_aCC) && defined(_REENTRANT) ) ) |
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| 125 | if ( ::sysconf( _SC_THREAD_SAFE_FUNCTIONS ) >= 0 ) |
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| 126 | { return ::readdir_r( dirp, entry, result ); } |
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| 127 | # endif |
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| 128 | |
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| 129 | struct dirent * p; |
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| 130 | errno = 0; |
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| 131 | *result = 0; |
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| 132 | if ( (p = ::readdir( dirp )) == 0 ) |
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| 133 | return errno; |
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| 134 | // POSIX specs require entry->d_name be large enough: |
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| 135 | std::strcpy( entry->d_name, p->d_name ); |
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| 136 | *result = entry; |
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| 137 | return 0; |
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| 138 | } |
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| 139 | |
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| 140 | inline const char * find_next_file( BOOST_HANDLE handle, |
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| 141 | const fs::path & ph, BOOST_SYSTEM_DIRECTORY_TYPE & entry ) |
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| 142 | // Returns: if EOF 0, otherwise name |
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| 143 | // Throws: if system reports error |
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| 144 | { |
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| 145 | struct dirent * result; |
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| 146 | int return_code; |
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| 147 | if ( (return_code = ::readdir_r_simulator( handle, &entry, &result )) != 0 ) |
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| 148 | { |
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| 149 | boost::throw_exception( |
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| 150 | fs::filesystem_error( |
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| 151 | "boost::filesystem::directory_iterator::operator++", |
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| 152 | ph, return_code ) ); |
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| 153 | } |
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| 154 | return result ? entry.d_name : 0; |
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| 155 | } |
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| 156 | #else // BOOST_WINDOWS |
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| 157 | |
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| 158 | # define BOOST_HANDLE HANDLE |
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| 159 | # define BOOST_INVALID_HANDLE_VALUE INVALID_HANDLE_VALUE |
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| 160 | # define BOOST_SYSTEM_DIRECTORY_TYPE WIN32_FIND_DATAA |
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| 161 | |
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| 162 | inline const char * find_first_file( const char * dir, |
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| 163 | BOOST_HANDLE & handle, BOOST_SYSTEM_DIRECTORY_TYPE & data ) |
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| 164 | // Returns: 0 if error, otherwise name |
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| 165 | // Note: an empty root directory has no "." or ".." entries, so this causes |
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| 166 | // a ERROR_FILE_NOT_FOUND error which we do not considered an error. Instead, |
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| 167 | // the handle is set to BOOST_INVALID_HANDLE_VALUE and a non-zero is returned. |
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| 168 | { |
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| 169 | // use a form of search Sebastian Martel reports will work with Win98 |
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| 170 | std::string dirpath( dir ); |
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| 171 | dirpath += (dirpath.empty() |
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| 172 | || (dirpath[dirpath.size()-1] != '\\' |
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| 173 | && dirpath[dirpath.size()-1] != '/')) ? "\\*" : "*"; |
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| 174 | |
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| 175 | return ( (handle = ::FindFirstFileA( dirpath.c_str(), &data )) |
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| 176 | == BOOST_INVALID_HANDLE_VALUE |
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| 177 | && ::GetLastError() != ERROR_FILE_NOT_FOUND) ? 0 : data.cFileName; |
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| 178 | } |
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| 179 | |
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| 180 | inline void find_close( BOOST_HANDLE handle ) |
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| 181 | { |
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| 182 | assert( handle != BOOST_INVALID_HANDLE_VALUE ); |
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| 183 | ::FindClose( handle ); |
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| 184 | } |
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| 185 | |
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| 186 | inline const char * find_next_file( |
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| 187 | BOOST_HANDLE handle, const fs::path & ph, |
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| 188 | BOOST_SYSTEM_DIRECTORY_TYPE & data ) |
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| 189 | // Returns: 0 if EOF, otherwise name |
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| 190 | // Throws: if system reports error |
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| 191 | { |
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| 192 | if ( ::FindNextFileA( handle, &data ) == 0 ) |
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| 193 | { |
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| 194 | if ( ::GetLastError() != ERROR_NO_MORE_FILES ) |
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| 195 | { |
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| 196 | boost::throw_exception( fs::filesystem_error( |
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| 197 | "boost::filesystem::directory_iterator::operator++", |
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| 198 | ph.branch_path(), fs::detail::system_error_code() ) ); |
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| 199 | } |
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| 200 | else { return 0; } // end reached |
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| 201 | } |
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| 202 | return data.cFileName; |
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| 203 | } |
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| 204 | |
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| 205 | #endif |
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| 206 | |
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| 207 | |
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| 208 | fs::directory_iterator end_itr; |
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| 209 | |
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| 210 | bool is_empty_directory( const fs::path & dir_path ) |
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| 211 | { |
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| 212 | return fs::directory_iterator(dir_path) == end_itr; |
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| 213 | } |
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| 214 | |
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| 215 | unsigned long remove_all_aux( const fs::path & ph ) |
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| 216 | { |
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| 217 | unsigned long count = 1; |
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| 218 | if ( !fs::symbolic_link_exists( ph ) // don't recurse symbolic links |
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| 219 | && fs::is_directory( ph ) ) |
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| 220 | { |
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| 221 | for ( fs::directory_iterator itr( ph ); |
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| 222 | itr != end_itr; ++itr ) |
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| 223 | { |
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| 224 | count += remove_all_aux( *itr ); |
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| 225 | } |
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| 226 | } |
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| 227 | fs::remove( ph ); |
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| 228 | return count; |
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| 229 | } |
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| 230 | |
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| 231 | } // unnamed namespace |
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| 232 | |
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| 233 | namespace boost |
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| 234 | { |
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| 235 | namespace filesystem |
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| 236 | { |
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| 237 | namespace detail |
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| 238 | { |
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| 239 | |
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| 240 | // dir_itr_imp -------------------------------------------------------------// |
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| 241 | |
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| 242 | class dir_itr_imp |
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| 243 | { |
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| 244 | public: |
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| 245 | path entry_path; |
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| 246 | BOOST_HANDLE handle; |
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| 247 | |
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| 248 | ~dir_itr_imp() |
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| 249 | { |
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| 250 | if ( handle != BOOST_INVALID_HANDLE_VALUE ) find_close( handle ); |
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| 251 | } |
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| 252 | }; |
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| 253 | |
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| 254 | // dot_or_dot_dot ----------------------------------------------------------// |
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| 255 | |
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| 256 | inline bool dot_or_dot_dot( const char * name ) |
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| 257 | { |
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| 258 | # if !BOOST_WORKAROUND( __BORLANDC__, BOOST_TESTED_AT(0x0564) ) |
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| 259 | return std::strcmp( name, "." ) == 0 |
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| 260 | || std::strcmp( name, ".." ) == 0; |
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| 261 | # else |
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| 262 | // Borland workaround for failure of intrinsics to be placed in |
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| 263 | // namespace std with certain combinations of compiler options. |
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| 264 | // To ensure test coverage, the workaround is applied to all |
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| 265 | // configurations, regardless of option settings. |
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| 266 | return name[0]=='.' |
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| 267 | && (name[1]=='\0' || (name[1]=='.' && name[2]=='\0')); |
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| 268 | # endif |
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| 269 | } |
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| 270 | |
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| 271 | // directory_iterator implementation ---------------------------------------// |
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| 272 | |
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| 273 | BOOST_FILESYSTEM_DECL void dir_itr_init( dir_itr_imp_ptr & m_imp, |
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| 274 | const path & dir_path ) |
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| 275 | { |
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| 276 | m_imp.reset( new dir_itr_imp ); |
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| 277 | BOOST_SYSTEM_DIRECTORY_TYPE scratch; |
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| 278 | const char * name = 0; // initialization quiets compiler warnings |
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| 279 | if ( dir_path.empty() ) |
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| 280 | m_imp->handle = BOOST_INVALID_HANDLE_VALUE; |
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| 281 | else |
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| 282 | { |
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| 283 | name = find_first_file( dir_path.native_directory_string().c_str(), |
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| 284 | m_imp->handle, scratch ); // sets handle |
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| 285 | if ( m_imp->handle == BOOST_INVALID_HANDLE_VALUE |
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| 286 | && name ) // eof |
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| 287 | { |
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| 288 | m_imp.reset(); // make end iterator |
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| 289 | return; |
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| 290 | } |
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| 291 | } |
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| 292 | if ( m_imp->handle != BOOST_INVALID_HANDLE_VALUE ) |
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| 293 | { |
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| 294 | m_imp->entry_path = dir_path; |
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| 295 | // append name, except ignore "." or ".." |
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| 296 | if ( !dot_or_dot_dot( name ) ) |
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| 297 | { |
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| 298 | m_imp->entry_path.m_path_append( name, no_check ); |
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| 299 | } |
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| 300 | else |
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| 301 | { |
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| 302 | m_imp->entry_path.m_path_append( "dummy", no_check ); |
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| 303 | dir_itr_increment( m_imp ); |
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| 304 | } |
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| 305 | } |
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| 306 | else |
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| 307 | { |
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| 308 | boost::throw_exception( filesystem_error( |
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| 309 | "boost::filesystem::directory_iterator constructor", |
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| 310 | dir_path, fs::detail::system_error_code() ) ); |
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| 311 | } |
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| 312 | } |
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| 313 | |
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| 314 | BOOST_FILESYSTEM_DECL path & dir_itr_dereference( |
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| 315 | const dir_itr_imp_ptr & m_imp ) |
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| 316 | { |
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| 317 | assert( m_imp.get() ); // fails if dereference end iterator |
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| 318 | return m_imp->entry_path; |
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| 319 | } |
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| 320 | |
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| 321 | BOOST_FILESYSTEM_DECL void dir_itr_increment( dir_itr_imp_ptr & m_imp ) |
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| 322 | { |
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| 323 | assert( m_imp.get() ); // fails on increment end iterator |
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| 324 | assert( m_imp->handle != BOOST_INVALID_HANDLE_VALUE ); // reality check |
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| 325 | |
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| 326 | BOOST_SYSTEM_DIRECTORY_TYPE scratch; |
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| 327 | const char * name; |
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| 328 | |
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| 329 | while ( (name = find_next_file( m_imp->handle, |
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| 330 | m_imp->entry_path, scratch )) != 0 ) |
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| 331 | { |
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| 332 | // append name, except ignore "." or ".." |
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| 333 | if ( !dot_or_dot_dot( name ) ) |
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| 334 | { |
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| 335 | m_imp->entry_path.m_replace_leaf( name ); |
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| 336 | return; |
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| 337 | } |
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| 338 | } |
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| 339 | m_imp.reset(); // make base() the end iterator |
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| 340 | } |
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| 341 | } // namespace detail |
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| 342 | |
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| 343 | // free functions ----------------------------------------------------------// |
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| 344 | |
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| 345 | BOOST_FILESYSTEM_DECL bool exists( const path & ph ) |
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| 346 | { |
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| 347 | # ifdef BOOST_POSIX |
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| 348 | struct stat path_stat; |
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| 349 | if(::stat( ph.string().c_str(), &path_stat ) != 0) |
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| 350 | { |
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| 351 | if((errno == ENOENT) || (errno == ENOTDIR)) |
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| 352 | return false; // stat failed because the path does not exist |
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| 353 | // for any other error we assume the file does exist and fall through, |
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| 354 | // this may not be the best policy though... (JM 20040330) |
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| 355 | } |
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| 356 | return true; |
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| 357 | # else |
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| 358 | if(::GetFileAttributesA( ph.string().c_str() ) == 0xFFFFFFFF) |
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| 359 | { |
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| 360 | UINT err = ::GetLastError(); |
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| 361 | if((err == ERROR_FILE_NOT_FOUND) |
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| 362 | || (err == ERROR_INVALID_PARAMETER) |
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| 363 | || (err == ERROR_NOT_READY) |
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| 364 | || (err == ERROR_PATH_NOT_FOUND) |
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| 365 | || (err == ERROR_INVALID_NAME) |
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| 366 | || (err == ERROR_BAD_NETPATH )) |
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| 367 | return false; // GetFileAttributes failed because the path does not exist |
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| 368 | // for any other error we assume the file does exist and fall through, |
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| 369 | // this may not be the best policy though... (JM 20040330) |
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| 370 | return true; |
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| 371 | } |
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| 372 | return true; |
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| 373 | # endif |
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| 374 | } |
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| 375 | |
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| 376 | BOOST_FILESYSTEM_DECL bool possible_large_file_size_support() |
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| 377 | { |
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| 378 | # ifdef BOOST_POSIX |
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| 379 | struct stat lcl_stat; |
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| 380 | return sizeof( lcl_stat.st_size ) > 4; |
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| 381 | # else |
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| 382 | return true; |
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| 383 | # endif |
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| 384 | } |
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| 385 | |
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| 386 | // suggested by Walter Landry |
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| 387 | BOOST_FILESYSTEM_DECL bool symbolic_link_exists( const path & ph ) |
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| 388 | { |
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| 389 | # ifdef BOOST_POSIX |
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| 390 | struct stat path_stat; |
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| 391 | return ::lstat( ph.native_file_string().c_str(), &path_stat ) == 0 |
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| 392 | && S_ISLNK( path_stat.st_mode ); |
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| 393 | # else |
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| 394 | return false; // Windows has no O/S concept of symbolic links |
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| 395 | // (.lnk files are an application feature, not |
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| 396 | // a Windows operating system feature) |
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| 397 | # endif |
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| 398 | } |
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| 399 | |
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| 400 | BOOST_FILESYSTEM_DECL bool is_directory( const path & ph ) |
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| 401 | { |
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| 402 | # ifdef BOOST_POSIX |
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| 403 | struct stat path_stat; |
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| 404 | if ( ::stat( ph.native_directory_string().c_str(), &path_stat ) != 0 ) |
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| 405 | boost::throw_exception( filesystem_error( |
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| 406 | "boost::filesystem::is_directory", |
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| 407 | ph, fs::detail::system_error_code() ) ); |
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| 408 | return S_ISDIR( path_stat.st_mode ); |
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| 409 | # else |
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| 410 | DWORD attributes = ::GetFileAttributesA( ph.native_directory_string().c_str() ); |
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| 411 | if ( attributes == 0xFFFFFFFF ) |
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| 412 | boost::throw_exception( filesystem_error( |
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| 413 | "boost::filesystem::is_directory", |
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| 414 | ph, fs::detail::system_error_code() ) ); |
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| 415 | return (attributes & FILE_ATTRIBUTE_DIRECTORY) != 0; |
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| 416 | # endif |
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| 417 | } |
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| 418 | |
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| 419 | BOOST_FILESYSTEM_DECL bool _is_empty( const path & ph ) |
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| 420 | { |
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| 421 | # ifdef BOOST_POSIX |
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| 422 | struct stat path_stat; |
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| 423 | if ( ::stat( ph.string().c_str(), &path_stat ) != 0 ) |
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| 424 | boost::throw_exception( filesystem_error( |
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| 425 | "boost::filesystem::is_empty", |
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| 426 | ph, fs::detail::system_error_code() ) ); |
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| 427 | |
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| 428 | return S_ISDIR( path_stat.st_mode ) |
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| 429 | ? is_empty_directory( ph ) |
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| 430 | : path_stat.st_size == 0; |
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| 431 | # else |
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| 432 | WIN32_FILE_ATTRIBUTE_DATA fad; |
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| 433 | if ( !::GetFileAttributesExA( ph.string().c_str(), |
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| 434 | ::GetFileExInfoStandard, &fad ) ) |
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| 435 | boost::throw_exception( filesystem_error( |
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| 436 | "boost::filesystem::is_empty", |
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| 437 | ph, fs::detail::system_error_code() ) ); |
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| 438 | |
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| 439 | return ( fad.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ) |
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| 440 | ? is_empty_directory( ph ) |
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| 441 | :( !fad.nFileSizeHigh && !fad.nFileSizeLow ); |
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| 442 | # endif |
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| 443 | } |
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| 444 | |
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| 445 | # ifdef BOOST_WINDOWS |
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| 446 | // Thanks to Jeremy Maitin-Shepard for much help and for permission to |
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| 447 | // base the implementation on portions of his file-equivalence-win32.cpp |
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| 448 | // experimental code. |
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| 449 | struct handle_wrapper |
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| 450 | { |
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| 451 | BOOST_HANDLE handle; |
|---|
| 452 | handle_wrapper( BOOST_HANDLE h ) |
|---|
| 453 | : handle(h) {} |
|---|
| 454 | ~handle_wrapper() |
|---|
| 455 | { |
|---|
| 456 | if ( handle != BOOST_INVALID_HANDLE_VALUE ) |
|---|
| 457 | ::CloseHandle(handle); |
|---|
| 458 | } |
|---|
| 459 | }; |
|---|
| 460 | # endif |
|---|
| 461 | |
|---|
| 462 | BOOST_FILESYSTEM_DECL bool equivalent( const path & ph1, const path & ph2 ) |
|---|
| 463 | { |
|---|
| 464 | # ifdef BOOST_POSIX |
|---|
| 465 | struct stat s1; |
|---|
| 466 | int s1_result = ::stat( ph1.string().c_str(), &s1 ); |
|---|
| 467 | // save error code in case we have to throw |
|---|
| 468 | int error1 = (s1_result != 0 ? fs::detail::system_error_code() : 0); |
|---|
| 469 | struct stat s2; |
|---|
| 470 | int s2_result = ::stat( ph2.string().c_str(), &s2 ); |
|---|
| 471 | if ( s1_result != 0 |
|---|
| 472 | || s2_result != 0 ) |
|---|
| 473 | { |
|---|
| 474 | if ( s1_result == 0 || s2_result == 0 ) return false; |
|---|
| 475 | assert( s1_result != 0 && s2_result != 0 ); |
|---|
| 476 | boost::throw_exception( filesystem_error( |
|---|
| 477 | "boost::filesystem::equivalent", |
|---|
| 478 | ph1, error1 ) ); |
|---|
| 479 | } |
|---|
| 480 | // at this point, both stats are known to be valid |
|---|
| 481 | return s1.st_dev == s2.st_dev |
|---|
| 482 | && s1.st_ino == s2.st_ino |
|---|
| 483 | // According to the POSIX stat specs, "The st_ino and st_dev fields |
|---|
| 484 | // taken together uniquely identify the file within the system." |
|---|
| 485 | // Just to be sure, size and mod time are also checked. |
|---|
| 486 | && s1.st_size == s2.st_size |
|---|
| 487 | && s1.st_mtime == s2.st_mtime; |
|---|
| 488 | # else |
|---|
| 489 | // Note well: Physical location on external media is part of the |
|---|
| 490 | // equivalence criteria. If there are no open handles, physical location |
|---|
| 491 | // can change due to defragmentation or other relocations. Thus handles |
|---|
| 492 | // must be held open until location information for both paths has |
|---|
| 493 | // been retrieved. |
|---|
| 494 | handle_wrapper p1( |
|---|
| 495 | ::CreateFileA( |
|---|
| 496 | ph1.string().c_str(), |
|---|
| 497 | 0, |
|---|
| 498 | FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE, |
|---|
| 499 | 0, |
|---|
| 500 | OPEN_EXISTING, |
|---|
| 501 | FILE_FLAG_BACKUP_SEMANTICS, |
|---|
| 502 | 0 ) ); |
|---|
| 503 | int error1; // save error code in case we have to throw |
|---|
| 504 | if ( p1.handle == BOOST_INVALID_HANDLE_VALUE ) |
|---|
| 505 | error1 = fs::detail::system_error_code(); |
|---|
| 506 | handle_wrapper p2( |
|---|
| 507 | ::CreateFileA( |
|---|
| 508 | ph2.string().c_str(), |
|---|
| 509 | 0, |
|---|
| 510 | FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE, |
|---|
| 511 | 0, |
|---|
| 512 | OPEN_EXISTING, |
|---|
| 513 | FILE_FLAG_BACKUP_SEMANTICS, |
|---|
| 514 | 0 ) ); |
|---|
| 515 | if ( p1.handle == BOOST_INVALID_HANDLE_VALUE |
|---|
| 516 | || p2.handle == BOOST_INVALID_HANDLE_VALUE ) |
|---|
| 517 | { |
|---|
| 518 | if ( p1.handle != BOOST_INVALID_HANDLE_VALUE |
|---|
| 519 | || p2.handle != BOOST_INVALID_HANDLE_VALUE ) return false; |
|---|
| 520 | assert( p1.handle == BOOST_INVALID_HANDLE_VALUE |
|---|
| 521 | && p2.handle == BOOST_INVALID_HANDLE_VALUE ); |
|---|
| 522 | boost::throw_exception( filesystem_error( |
|---|
| 523 | "boost::filesystem::equivalent", |
|---|
| 524 | ph1, error1 ) ); |
|---|
| 525 | } |
|---|
| 526 | // at this point, both handles are known to be valid |
|---|
| 527 | BY_HANDLE_FILE_INFORMATION info1, info2; |
|---|
| 528 | if ( !::GetFileInformationByHandle( p1.handle, &info1 ) ) |
|---|
| 529 | boost::throw_exception( filesystem_error( |
|---|
| 530 | "boost::filesystem::equivalent", |
|---|
| 531 | ph1, fs::detail::system_error_code() ) ); |
|---|
| 532 | if ( !::GetFileInformationByHandle( p2.handle, &info2 ) ) |
|---|
| 533 | boost::throw_exception( filesystem_error( |
|---|
| 534 | "boost::filesystem::equivalent", |
|---|
| 535 | ph2, fs::detail::system_error_code() ) ); |
|---|
| 536 | // In theory, volume serial numbers are sufficient to distinguish between |
|---|
| 537 | // devices, but in practice VSN's are sometimes duplicated, so last write |
|---|
| 538 | // time and file size are also checked. |
|---|
| 539 | return info1.dwVolumeSerialNumber == info2.dwVolumeSerialNumber |
|---|
| 540 | && info1.nFileIndexHigh == info2.nFileIndexHigh |
|---|
| 541 | && info1.nFileIndexLow == info2.nFileIndexLow |
|---|
| 542 | && info1.nFileSizeHigh == info2.nFileSizeHigh |
|---|
| 543 | && info1.nFileSizeLow == info2.nFileSizeLow |
|---|
| 544 | && info1.ftLastWriteTime.dwLowDateTime |
|---|
| 545 | == info2.ftLastWriteTime.dwLowDateTime |
|---|
| 546 | && info1.ftLastWriteTime.dwHighDateTime |
|---|
| 547 | == info2.ftLastWriteTime.dwHighDateTime; |
|---|
| 548 | # endif |
|---|
| 549 | } |
|---|
| 550 | |
|---|
| 551 | |
|---|
| 552 | BOOST_FILESYSTEM_DECL boost::intmax_t file_size( const path & ph ) |
|---|
| 553 | { |
|---|
| 554 | # ifdef BOOST_POSIX |
|---|
| 555 | struct stat path_stat; |
|---|
| 556 | if ( ::stat( ph.string().c_str(), &path_stat ) != 0 ) |
|---|
| 557 | boost::throw_exception( filesystem_error( |
|---|
| 558 | "boost::filesystem::file_size", |
|---|
| 559 | ph, fs::detail::system_error_code() ) ); |
|---|
| 560 | if ( S_ISDIR( path_stat.st_mode ) ) |
|---|
| 561 | boost::throw_exception( filesystem_error( |
|---|
| 562 | "boost::filesystem::file_size", |
|---|
| 563 | ph, "invalid: is a directory", |
|---|
| 564 | is_directory_error ) ); |
|---|
| 565 | return static_cast<boost::intmax_t>(path_stat.st_size); |
|---|
| 566 | # else |
|---|
| 567 | // by now, intmax_t is 64-bits on all Windows compilers |
|---|
| 568 | WIN32_FILE_ATTRIBUTE_DATA fad; |
|---|
| 569 | if ( !::GetFileAttributesExA( ph.string().c_str(), |
|---|
| 570 | ::GetFileExInfoStandard, &fad ) ) |
|---|
| 571 | boost::throw_exception( filesystem_error( |
|---|
| 572 | "boost::filesystem::file_size", |
|---|
| 573 | ph, fs::detail::system_error_code() ) ); |
|---|
| 574 | if ( (fad.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) !=0 ) |
|---|
| 575 | boost::throw_exception( filesystem_error( |
|---|
| 576 | "boost::filesystem::file_size", |
|---|
| 577 | ph, "invalid: is a directory", |
|---|
| 578 | is_directory_error ) ); |
|---|
| 579 | return (static_cast<boost::intmax_t>(fad.nFileSizeHigh) |
|---|
| 580 | << (sizeof(fad.nFileSizeLow)*8)) |
|---|
| 581 | + fad.nFileSizeLow; |
|---|
| 582 | # endif |
|---|
| 583 | } |
|---|
| 584 | |
|---|
| 585 | BOOST_FILESYSTEM_DECL std::time_t last_write_time( const path & ph ) |
|---|
| 586 | { |
|---|
| 587 | // Works for both Windows and POSIX |
|---|
| 588 | struct stat path_stat; |
|---|
| 589 | if ( ::stat( ph.string().c_str(), &path_stat ) != 0 ) |
|---|
| 590 | boost::throw_exception( filesystem_error( |
|---|
| 591 | "boost::filesystem::last_write_time", |
|---|
| 592 | ph, fs::detail::system_error_code() ) ); |
|---|
| 593 | return path_stat.st_mtime; |
|---|
| 594 | } |
|---|
| 595 | |
|---|
| 596 | BOOST_FILESYSTEM_DECL void last_write_time( const path & ph, const std::time_t new_time ) |
|---|
| 597 | { |
|---|
| 598 | // Works for both Windows and POSIX |
|---|
| 599 | struct stat path_stat; |
|---|
| 600 | if ( ::stat( ph.string().c_str(), &path_stat ) != 0 ) |
|---|
| 601 | boost::throw_exception( filesystem_error( |
|---|
| 602 | "boost::filesystem::last_write_time", |
|---|
| 603 | ph, fs::detail::system_error_code() ) ); |
|---|
| 604 | ::utimbuf buf; |
|---|
| 605 | buf.actime = path_stat.st_atime; // utime() updates access time too:-( |
|---|
| 606 | buf.modtime = new_time; |
|---|
| 607 | if ( ::utime( ph.string().c_str(), &buf ) != 0 ) |
|---|
| 608 | boost::throw_exception( filesystem_error( |
|---|
| 609 | "boost::filesystem::last_write_time", |
|---|
| 610 | ph, fs::detail::system_error_code() ) ); |
|---|
| 611 | } |
|---|
| 612 | |
|---|
| 613 | BOOST_FILESYSTEM_DECL bool create_directory( const path & dir_path ) |
|---|
| 614 | { |
|---|
| 615 | # ifdef BOOST_POSIX |
|---|
| 616 | if ( ::mkdir( dir_path.native_directory_string().c_str(), |
|---|
| 617 | S_IRWXU|S_IRWXG|S_IRWXO ) == 0 ) return true; |
|---|
| 618 | if ( errno != EEXIST ) |
|---|
| 619 | # else |
|---|
| 620 | if ( ::CreateDirectoryA( dir_path.native_directory_string().c_str(), 0 ) ) |
|---|
| 621 | return true; |
|---|
| 622 | if ( ::GetLastError() != ERROR_ALREADY_EXISTS ) |
|---|
| 623 | # endif |
|---|
| 624 | boost::throw_exception( filesystem_error( |
|---|
| 625 | "boost::filesystem::create_directory", |
|---|
| 626 | dir_path, fs::detail::system_error_code() ) ); |
|---|
| 627 | if ( !is_directory( dir_path ) ) |
|---|
| 628 | boost::throw_exception( filesystem_error( |
|---|
| 629 | "boost::filesystem::create_directory", |
|---|
| 630 | dir_path, "path exists and is not a directory", not_directory_error ) ); |
|---|
| 631 | return false; |
|---|
| 632 | } |
|---|
| 633 | |
|---|
| 634 | BOOST_FILESYSTEM_DECL bool remove( const path & ph ) |
|---|
| 635 | { |
|---|
| 636 | if ( exists( ph ) |
|---|
| 637 | # ifdef BOOST_POSIX |
|---|
| 638 | || symbolic_link_exists( ph ) ) // handle dangling symbolic links |
|---|
| 639 | { |
|---|
| 640 | # if defined(__QNXNTO__) || (defined(__MSL__) && (defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__))) |
|---|
| 641 | // Some Metrowerks C library versions fail on directories because of a |
|---|
| 642 | // known Metrowerks coding error in ::remove. Workaround is to call |
|---|
| 643 | // rmdir() or unlink() as indicated. |
|---|
| 644 | // Same bug reported for QNX; same fix. |
|---|
| 645 | if ( (is_directory( ph ) |
|---|
| 646 | ? ::rmdir( ph.string().c_str() ) |
|---|
| 647 | : ::unlink( ph.string().c_str() )) != 0 ) |
|---|
| 648 | # else |
|---|
| 649 | // note that the POSIX behavior for symbolic links is what we want; |
|---|
| 650 | // the link rather than what it points to is deleted |
|---|
| 651 | if ( std::remove( ph.string().c_str() ) != 0 ) |
|---|
| 652 | # endif |
|---|
| 653 | |
|---|
| 654 | { |
|---|
| 655 | int error = fs::detail::system_error_code(); |
|---|
| 656 | // POSIX says "If the directory is not an empty directory, rmdir() |
|---|
| 657 | // shall fail and set errno to EEXIST or ENOTEMPTY." |
|---|
| 658 | // Linux uses ENOTEMPTY, Solaris uses EEXIST. |
|---|
| 659 | if ( error == EEXIST ) error = ENOTEMPTY; |
|---|
| 660 | boost::throw_exception( filesystem_error( |
|---|
| 661 | "boost::filesystem::remove", ph, error ) ); |
|---|
| 662 | } |
|---|
| 663 | # else |
|---|
| 664 | ) |
|---|
| 665 | { |
|---|
| 666 | if ( is_directory( ph ) ) |
|---|
| 667 | { |
|---|
| 668 | if ( !::RemoveDirectoryA( ph.string().c_str() ) ) |
|---|
| 669 | boost::throw_exception( filesystem_error( |
|---|
| 670 | "boost::filesystem::remove", |
|---|
| 671 | ph, fs::detail::system_error_code() ) ); |
|---|
| 672 | } |
|---|
| 673 | else |
|---|
| 674 | { |
|---|
| 675 | if ( !::DeleteFileA( ph.string().c_str() ) ) |
|---|
| 676 | boost::throw_exception( filesystem_error( |
|---|
| 677 | "boost::filesystem::remove", |
|---|
| 678 | ph, fs::detail::system_error_code() ) ); |
|---|
| 679 | } |
|---|
| 680 | # endif |
|---|
| 681 | return true; |
|---|
| 682 | } |
|---|
| 683 | return false; |
|---|
| 684 | } |
|---|
| 685 | |
|---|
| 686 | BOOST_FILESYSTEM_DECL unsigned long remove_all( const path & ph ) |
|---|
| 687 | { |
|---|
| 688 | return exists( ph )|| symbolic_link_exists( ph ) |
|---|
| 689 | ? remove_all_aux( ph ) : 0; |
|---|
| 690 | } |
|---|
| 691 | |
|---|
| 692 | BOOST_FILESYSTEM_DECL void rename( const path & old_path, |
|---|
| 693 | const path & new_path ) |
|---|
| 694 | { |
|---|
| 695 | # ifdef BOOST_POSIX |
|---|
| 696 | if ( exists( new_path ) // POSIX is too permissive so must check |
|---|
| 697 | || std::rename( old_path.string().c_str(), new_path.string().c_str() ) != 0 ) |
|---|
| 698 | # else |
|---|
| 699 | if ( !::MoveFileA( old_path.string().c_str(), new_path.string().c_str() ) ) |
|---|
| 700 | # endif |
|---|
| 701 | boost::throw_exception( filesystem_error( |
|---|
| 702 | "boost::filesystem::rename", |
|---|
| 703 | old_path, new_path, fs::detail::system_error_code() ) ); |
|---|
| 704 | } |
|---|
| 705 | |
|---|
| 706 | #ifdef BOOST_POSIX |
|---|
| 707 | namespace detail |
|---|
| 708 | { |
|---|
| 709 | void throw_copy_file_error( const path & from_file_ph, |
|---|
| 710 | const path & to_file_ph ) |
|---|
| 711 | { |
|---|
| 712 | boost::throw_exception( fs::filesystem_error( |
|---|
| 713 | "boost::filesystem::copy_file", |
|---|
| 714 | from_file_ph, to_file_ph, system_error_code() ) ); |
|---|
| 715 | } |
|---|
| 716 | } |
|---|
| 717 | #endif |
|---|
| 718 | |
|---|
| 719 | BOOST_FILESYSTEM_DECL void copy_file( const path & from_file_ph, |
|---|
| 720 | const path & to_file_ph ) |
|---|
| 721 | { |
|---|
| 722 | # ifdef BOOST_POSIX |
|---|
| 723 | const std::size_t buf_sz = 32768; |
|---|
| 724 | boost::scoped_array<char> buf( new char [buf_sz] ); |
|---|
| 725 | int infile=0, outfile=0; // init quiets compiler warning |
|---|
| 726 | struct stat from_stat; |
|---|
| 727 | |
|---|
| 728 | if ( ::stat( from_file_ph.string().c_str(), &from_stat ) != 0 |
|---|
| 729 | || (infile = ::open( from_file_ph.string().c_str(), |
|---|
| 730 | O_RDONLY )) < 0 |
|---|
| 731 | || (outfile = ::open( to_file_ph.string().c_str(), |
|---|
| 732 | O_WRONLY | O_CREAT | O_EXCL, |
|---|
| 733 | from_stat.st_mode )) < 0 ) |
|---|
| 734 | { |
|---|
| 735 | if ( infile >= 0 ) ::close( infile ); |
|---|
| 736 | detail::throw_copy_file_error( from_file_ph, to_file_ph ); |
|---|
| 737 | } |
|---|
| 738 | |
|---|
| 739 | ssize_t sz, sz_read=1, sz_write; |
|---|
| 740 | while ( sz_read > 0 |
|---|
| 741 | && (sz_read = ::read( infile, buf.get(), buf_sz )) > 0 ) |
|---|
| 742 | { |
|---|
| 743 | // Allow for partial writes - see Advanced Unix Programming (2nd Ed.), |
|---|
| 744 | // Marc Rochkind, Addison-Wesley, 2004, page 94 |
|---|
| 745 | sz_write = 0; |
|---|
| 746 | do |
|---|
| 747 | { |
|---|
| 748 | if ( (sz = ::write( outfile, buf.get(), sz_read - sz_write )) < 0 ) |
|---|
| 749 | { |
|---|
| 750 | sz_read = sz; // cause read loop termination |
|---|
| 751 | break; // and error to be thrown after closes |
|---|
| 752 | } |
|---|
| 753 | sz_write += sz; |
|---|
| 754 | } while ( sz_write < sz_read ); |
|---|
| 755 | } |
|---|
| 756 | |
|---|
| 757 | if ( ::close( infile) < 0 ) sz_read = -1; |
|---|
| 758 | if ( ::close( outfile) < 0 ) sz_read = -1; |
|---|
| 759 | |
|---|
| 760 | if ( sz_read < 0 ) |
|---|
| 761 | detail::throw_copy_file_error( from_file_ph, to_file_ph ); |
|---|
| 762 | # else |
|---|
| 763 | if ( !::CopyFileA( from_file_ph.string().c_str(), |
|---|
| 764 | to_file_ph.string().c_str(), /*fail_if_exists=*/true ) ) |
|---|
| 765 | boost::throw_exception( fs::filesystem_error( |
|---|
| 766 | "boost::filesystem::copy_file", |
|---|
| 767 | from_file_ph, to_file_ph, detail::system_error_code() ) ); |
|---|
| 768 | # endif |
|---|
| 769 | } |
|---|
| 770 | |
|---|
| 771 | BOOST_FILESYSTEM_DECL path current_path() |
|---|
| 772 | { |
|---|
| 773 | # ifdef BOOST_POSIX |
|---|
| 774 | for ( long path_max = 32;; path_max *=2 ) // loop 'til buffer large enough |
|---|
| 775 | { |
|---|
| 776 | boost::scoped_array<char> |
|---|
| 777 | buf( new char[static_cast<std::size_t>(path_max)] ); |
|---|
| 778 | if ( ::getcwd( buf.get(), static_cast<std::size_t>(path_max) ) == 0 ) |
|---|
| 779 | { |
|---|
| 780 | if ( errno != ERANGE |
|---|
| 781 | // there is a bug in some versions of the Metrowerks C lib on the Mac: wrong errno set |
|---|
| 782 | #if defined(__MSL__) && (defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__)) |
|---|
| 783 | && errno != 0 |
|---|
| 784 | #endif |
|---|
| 785 | ) |
|---|
| 786 | boost::throw_exception( |
|---|
| 787 | filesystem_error( "boost::filesystem::current_path", path(), |
|---|
| 788 | fs::detail::system_error_code() ) ); |
|---|
| 789 | } |
|---|
| 790 | else return path( buf.get(), native ); |
|---|
| 791 | } |
|---|
| 792 | BOOST_UNREACHABLE_RETURN(0) |
|---|
| 793 | # else |
|---|
| 794 | DWORD sz; |
|---|
| 795 | if ( (sz = ::GetCurrentDirectoryA( 0, static_cast<char*>(0) )) == 0 ) |
|---|
| 796 | boost::throw_exception( |
|---|
| 797 | filesystem_error( "boost::filesystem::current_path", |
|---|
| 798 | "size is 0" ) ); |
|---|
| 799 | boost::scoped_array<char> buf( new char[sz] ); |
|---|
| 800 | if ( ::GetCurrentDirectoryA( sz, buf.get() ) == 0 ) |
|---|
| 801 | boost::throw_exception( |
|---|
| 802 | filesystem_error( "boost::filesystem::current_path", path(), |
|---|
| 803 | fs::detail::system_error_code() ) ); |
|---|
| 804 | return path( buf.get(), native ); |
|---|
| 805 | # endif |
|---|
| 806 | } |
|---|
| 807 | |
|---|
| 808 | BOOST_FILESYSTEM_DECL const path & initial_path() |
|---|
| 809 | { |
|---|
| 810 | static path init_path; |
|---|
| 811 | if ( init_path.empty() ) init_path = current_path(); |
|---|
| 812 | return init_path; |
|---|
| 813 | } |
|---|
| 814 | |
|---|
| 815 | BOOST_FILESYSTEM_DECL path system_complete( const path & ph ) |
|---|
| 816 | { |
|---|
| 817 | # ifdef BOOST_WINDOWS |
|---|
| 818 | if ( ph.empty() ) return ph; |
|---|
| 819 | char buf[MAX_PATH]; |
|---|
| 820 | char * pfn; |
|---|
| 821 | std::size_t len = ::GetFullPathNameA( ph.string().c_str(), |
|---|
| 822 | sizeof(buf) , buf, &pfn ); |
|---|
| 823 | if ( !len ) |
|---|
| 824 | { boost::throw_exception( |
|---|
| 825 | filesystem_error( "boost::filesystem::system_complete", |
|---|
| 826 | ph, "size is 0" ) ); } |
|---|
| 827 | buf[len] = '\0'; |
|---|
| 828 | return path( buf, native ); |
|---|
| 829 | # else |
|---|
| 830 | return (ph.empty() || ph.is_complete()) |
|---|
| 831 | ? ph : current_path() / ph; |
|---|
| 832 | # endif |
|---|
| 833 | } |
|---|
| 834 | |
|---|
| 835 | BOOST_FILESYSTEM_DECL path complete( const path & ph, const path & base ) |
|---|
| 836 | { |
|---|
| 837 | assert( base.is_complete() |
|---|
| 838 | && (ph.is_complete() || !ph.has_root_name()) ); // precondition |
|---|
| 839 | # ifdef BOOST_WINDOWS |
|---|
| 840 | if (ph.empty() || ph.is_complete()) return ph; |
|---|
| 841 | if ( !ph.has_root_name() ) |
|---|
| 842 | return ph.has_root_directory() |
|---|
| 843 | ? path( base.root_name(), native ) / ph |
|---|
| 844 | : base / ph; |
|---|
| 845 | return base / ph; |
|---|
| 846 | # else |
|---|
| 847 | return (ph.empty() || ph.is_complete()) ? ph : base / ph; |
|---|
| 848 | # endif |
|---|
| 849 | } |
|---|
| 850 | } // namespace filesystem |
|---|
| 851 | } // namespace boost |
|---|
| 852 | |
|---|