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1 // boost/filesystem/operations.hpp -----------------------------------------// |
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2 |
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3 // Copyright 2002-2005 Beman Dawes |
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4 // Copyright 2002 Jan Langer |
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5 // Copyright 2001 Dietmar Kuehl |
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6 // |
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7 // Use, modification, and distribution is subject to the Boost Software |
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8 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy |
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9 // at http://www.boost.org/LICENSE_1_0.txt) |
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10 |
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11 // See library home page at http://www.boost.org/libs/filesystem |
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12 |
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13 //----------------------------------------------------------------------------// |
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14 |
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15 #ifndef BOOST_FILESYSTEM_OPERATIONS_HPP |
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16 #define BOOST_FILESYSTEM_OPERATIONS_HPP |
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17 |
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18 #include <boost/filesystem/path.hpp> // includes <boost/filesystem/config.hpp> |
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19 |
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20 #include <boost/shared_ptr.hpp> |
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21 #include <boost/utility/enable_if.hpp> |
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22 #include <boost/type_traits/is_same.hpp> |
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23 #include <boost/iterator.hpp> |
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24 #include <boost/cstdint.hpp> |
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25 #include <boost/assert.hpp> |
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26 |
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27 #include <string> |
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28 #include <utility> // for pair |
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29 #include <ctime> |
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30 |
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31 #ifdef BOOST_WINDOWS_API |
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32 # include <fstream> |
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33 # if !defined(_WIN32_WINNT) || _WIN32_WINNT >= 0x0500 |
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34 # define BOOST_FS_HARD_LINK // Default for Windows 2K or later |
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35 # endif |
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36 #endif |
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37 |
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38 #include <boost/config/abi_prefix.hpp> // must be the last #include |
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39 |
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40 # ifdef BOOST_NO_STDC_NAMESPACE |
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41 namespace std { using ::time_t; } |
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42 # endif |
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43 |
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44 # ifndef BOOST_FILESYSTEM_NARROW_ONLY |
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45 # define BOOST_FS_FUNC(BOOST_FS_TYPE) \ |
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46 template<class Path> typename boost::enable_if<is_basic_path<Path>, \ |
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47 BOOST_FS_TYPE>::type |
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48 # define BOOST_INLINE_FS_FUNC(BOOST_FS_TYPE) \ |
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49 template<class Path> inline typename boost::enable_if<is_basic_path<Path>, \ |
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50 BOOST_FS_TYPE>::type |
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51 # define BOOST_FS_TYPENAME typename |
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52 # else |
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53 # define BOOST_FS_FUNC(BOOST_FS_TYPE) inline BOOST_FS_TYPE |
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54 # define BOOST_INLINE_FS_FUNC(BOOST_FS_TYPE) inline BOOST_FS_TYPE |
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55 typedef boost::filesystem::path Path; |
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56 # define BOOST_FS_TYPENAME |
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57 # endif |
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58 |
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59 //----------------------------------------------------------------------------// |
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60 |
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61 namespace boost |
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62 { |
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63 namespace filesystem |
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64 { |
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65 template<class Path> class basic_directory_iterator; |
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66 |
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67 // BOOST_FILESYSTEM_NARROW_ONLY needs this: |
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68 typedef basic_directory_iterator<path> directory_iterator; |
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69 |
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70 template<class Path> class basic_directory_entry; |
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71 |
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72 enum file_type |
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73 { |
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74 status_unknown, |
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75 file_not_found, |
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76 regular_file, |
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77 directory_file, |
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78 // the following will never be reported by some operating or file systems |
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79 symlink_file, |
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80 block_file, |
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81 character_file, |
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82 fifo_file, |
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83 socket_file, |
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84 type_unknown // file does exist, but isn't one of the above types |
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85 }; |
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86 |
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87 class file_status |
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88 { |
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89 public: |
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90 explicit file_status( file_type v = status_unknown ) : m_value(v) {} |
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91 |
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92 void type( file_type v ) { m_value = v; } |
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93 file_type type() const { return m_value; } |
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94 |
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95 private: |
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96 // the internal representation is unspecified so that additional state |
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97 // information such as permissions can be added in the future; this |
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98 // implementation just uses status_type as the internal representation |
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99 |
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100 file_type m_value; |
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101 }; |
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102 |
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103 inline bool status_known( file_status f ) { return f.type() != status_unknown; } |
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104 inline bool exists( file_status f ) { return f.type() != status_unknown && f.type() != file_not_found; } |
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105 inline bool is_regular( file_status f ) { return f.type() == regular_file; } |
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106 inline bool is_directory( file_status f ) { return f.type() == directory_file; } |
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107 inline bool is_symlink( file_status f ) { return f.type() == symlink_file; } |
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108 inline bool is_other( file_status f ) { return exists(f) && !is_regular(f) && !is_directory(f) && !is_symlink(f); } |
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109 |
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110 struct space_info |
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111 { |
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112 // all values are byte counts |
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113 boost::uintmax_t capacity; |
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114 boost::uintmax_t free; // <= capacity |
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115 boost::uintmax_t available; // <= free |
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116 }; |
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117 |
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118 namespace detail |
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119 { |
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120 typedef std::pair< boost::filesystem::system_error_type, bool > |
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121 query_pair; |
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122 |
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123 typedef std::pair< boost::filesystem::system_error_type, boost::uintmax_t > |
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124 uintmax_pair; |
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125 |
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126 typedef std::pair< boost::filesystem::system_error_type, std::time_t > |
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127 time_pair; |
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128 |
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129 typedef std::pair< boost::filesystem::system_error_type, space_info > |
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130 space_pair; |
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131 |
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132 template< class Path > |
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133 struct directory_pair |
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134 { |
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135 typedef std::pair< boost::filesystem::system_error_type, |
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136 typename Path::external_string_type > type; |
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137 }; |
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138 |
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139 # ifndef BOOST_FILESYSTEM_NO_DEPRECATED |
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140 BOOST_FILESYSTEM_DECL bool |
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141 symbolic_link_exists_api( const std::string & ); // deprecated |
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142 # endif |
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143 |
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144 BOOST_FILESYSTEM_DECL file_status |
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145 status_api( const std::string & ph, system_error_type & ec ); |
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146 # ifndef BOOST_WINDOWS_API |
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147 BOOST_FILESYSTEM_DECL file_status |
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148 symlink_status_api( const std::string & ph, system_error_type & ec ); |
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149 # endif |
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150 BOOST_FILESYSTEM_DECL query_pair |
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151 is_empty_api( const std::string & ph ); |
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152 BOOST_FILESYSTEM_DECL query_pair |
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153 equivalent_api( const std::string & ph1, const std::string & ph2 ); |
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154 BOOST_FILESYSTEM_DECL uintmax_pair |
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155 file_size_api( const std::string & ph ); |
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156 BOOST_FILESYSTEM_DECL space_pair |
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157 space_api( const std::string & ph ); |
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158 BOOST_FILESYSTEM_DECL time_pair |
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159 last_write_time_api( const std::string & ph ); |
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160 BOOST_FILESYSTEM_DECL boost::filesystem::system_error_type |
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161 last_write_time_api( const std::string & ph, std::time_t new_value ); |
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162 BOOST_FILESYSTEM_DECL boost::filesystem::system_error_type |
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163 get_current_path_api( std::string & ph ); |
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164 BOOST_FILESYSTEM_DECL query_pair |
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165 create_directory_api( const std::string & ph ); |
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166 BOOST_FILESYSTEM_DECL boost::filesystem::system_error_type |
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167 create_hard_link_api( const std::string & to_ph, |
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168 const std::string & from_ph ); |
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169 BOOST_FILESYSTEM_DECL boost::filesystem::system_error_type |
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170 create_symlink_api( const std::string & to_ph, |
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171 const std::string & from_ph ); |
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172 BOOST_FILESYSTEM_DECL boost::filesystem::system_error_type |
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173 remove_api( const std::string & ph ); |
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174 BOOST_FILESYSTEM_DECL boost::filesystem::system_error_type |
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175 rename_api( const std::string & from, const std::string & to ); |
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176 BOOST_FILESYSTEM_DECL boost::filesystem::system_error_type |
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177 copy_file_api( const std::string & from, const std::string & to ); |
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178 |
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179 # if defined(BOOST_WINDOWS_API) |
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180 |
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181 BOOST_FILESYSTEM_DECL boost::filesystem::system_error_type |
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182 get_full_path_name_api( const std::string & ph, std::string & target ); |
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183 |
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184 # if !defined(BOOST_FILESYSTEM_NARROW_ONLY) |
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185 |
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186 BOOST_FILESYSTEM_DECL boost::filesystem::file_status |
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187 status_api( const std::wstring & ph, system_error_type & ec ); |
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188 BOOST_FILESYSTEM_DECL query_pair |
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189 is_empty_api( const std::wstring & ph ); |
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190 BOOST_FILESYSTEM_DECL query_pair |
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191 equivalent_api( const std::wstring & ph1, const std::wstring & ph2 ); |
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192 BOOST_FILESYSTEM_DECL uintmax_pair |
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193 file_size_api( const std::wstring & ph ); |
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194 BOOST_FILESYSTEM_DECL space_pair |
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195 space_api( const std::wstring & ph ); |
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196 BOOST_FILESYSTEM_DECL boost::filesystem::system_error_type |
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197 get_full_path_name_api( const std::wstring & ph, std::wstring & target ); |
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198 BOOST_FILESYSTEM_DECL time_pair |
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199 last_write_time_api( const std::wstring & ph ); |
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200 BOOST_FILESYSTEM_DECL boost::filesystem::system_error_type |
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201 last_write_time_api( const std::wstring & ph, std::time_t new_value ); |
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202 BOOST_FILESYSTEM_DECL boost::filesystem::system_error_type |
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203 get_current_path_api( std::wstring & ph ); |
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204 BOOST_FILESYSTEM_DECL query_pair |
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205 create_directory_api( const std::wstring & ph ); |
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206 # ifdef BOOST_FS_HARD_LINK |
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207 BOOST_FILESYSTEM_DECL boost::filesystem::system_error_type |
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208 create_hard_link_api( const std::wstring & existing_ph, |
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209 const std::wstring & new_ph ); |
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210 # endif |
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211 BOOST_FILESYSTEM_DECL boost::filesystem::system_error_type |
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212 create_symlink_api( const std::wstring & to_ph, |
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213 const std::wstring & from_ph ); |
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214 BOOST_FILESYSTEM_DECL boost::filesystem::system_error_type |
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215 remove_api( const std::wstring & ph ); |
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216 BOOST_FILESYSTEM_DECL boost::filesystem::system_error_type |
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217 rename_api( const std::wstring & from, const std::wstring & to ); |
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218 BOOST_FILESYSTEM_DECL boost::filesystem::system_error_type |
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219 copy_file_api( const std::wstring & from, const std::wstring & to ); |
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220 |
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221 # endif |
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222 # endif |
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223 |
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224 template<class Path> |
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225 unsigned long remove_all_aux( const Path & ph ); |
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226 |
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227 } // namespace detail |
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228 |
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229 // operations functions ----------------------------------------------------// |
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230 |
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231 // The non-template overloads enable automatic conversion from std and |
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232 // C-style strings. See basic_path constructors. The enable_if for the |
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233 // templates implements the famous "do-the-right-thing" rule. |
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234 |
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235 // query functions ---------------------------------------------------------// |
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236 |
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237 BOOST_INLINE_FS_FUNC(file_status) |
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238 status( const Path & ph, system_error_type & ec ) |
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239 { return detail::status_api( ph.external_file_string(), ec ); } |
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240 |
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241 BOOST_FS_FUNC(file_status) |
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242 status( const Path & ph ) |
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243 { |
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244 system_error_type ec; |
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245 file_status result( detail::status_api( ph.external_file_string(), ec ) ); |
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246 if ( ec ) |
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247 boost::throw_exception( basic_filesystem_error<Path>( |
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248 "boost::filesystem::status", ph, ec ) ); |
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249 return result; |
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250 } |
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251 |
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252 BOOST_INLINE_FS_FUNC(file_status) |
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253 symlink_status( const Path & ph, system_error_type & ec ) |
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254 # ifdef BOOST_WINDOWS_API |
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255 { return detail::status_api( ph.external_file_string(), ec ); } |
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256 # else |
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257 { return detail::symlink_status_api( ph.external_file_string(), ec ); } |
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258 # endif |
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259 |
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260 BOOST_FS_FUNC(file_status) |
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261 symlink_status( const Path & ph ) |
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262 { |
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263 system_error_type ec; |
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264 file_status result( symlink_status( ph, ec ) ); |
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265 if ( ec ) |
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266 boost::throw_exception( basic_filesystem_error<Path>( |
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267 "boost::filesystem::symlink_status", ph, ec ) ); |
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268 return result; |
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269 } |
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270 |
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271 # ifndef BOOST_FILESYSTEM_NO_DEPRECATED |
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272 inline bool symbolic_link_exists( const path & ph ) |
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273 { return is_symlink( symlink_status(ph) ); } |
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274 #endif |
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275 |
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276 BOOST_FS_FUNC(bool) exists( const Path & ph ) |
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277 { |
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278 system_error_type ec; |
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279 file_status result( detail::status_api( ph.external_file_string(), ec ) ); |
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280 if ( ec ) |
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281 boost::throw_exception( basic_filesystem_error<Path>( |
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282 "boost::filesystem::exists", ph, ec ) ); |
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283 return exists( result ); |
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284 } |
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285 |
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286 BOOST_FS_FUNC(bool) is_directory( const Path & ph ) |
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287 { |
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288 system_error_type ec; |
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289 file_status result( detail::status_api( ph.external_file_string(), ec ) ); |
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290 if ( ec ) |
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291 boost::throw_exception( basic_filesystem_error<Path>( |
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292 "boost::filesystem::is_directory", ph, ec ) ); |
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293 return is_directory( result ); |
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294 } |
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295 |
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296 BOOST_FS_FUNC(bool) is_regular( const Path & ph ) |
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297 { |
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298 system_error_type ec; |
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299 file_status result( detail::status_api( ph.external_file_string(), ec ) ); |
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300 if ( ec ) |
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301 boost::throw_exception( basic_filesystem_error<Path>( |
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302 "boost::filesystem::is_regular", ph, ec ) ); |
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303 return is_regular( result ); |
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304 } |
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305 |
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306 BOOST_FS_FUNC(bool) is_other( const Path & ph ) |
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307 { |
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308 system_error_type ec; |
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309 file_status result( detail::status_api( ph.external_file_string(), ec ) ); |
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310 if ( ec ) |
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311 boost::throw_exception( basic_filesystem_error<Path>( |
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312 "boost::filesystem::is_other", ph, ec ) ); |
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313 return is_other( result ); |
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314 } |
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315 |
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316 BOOST_FS_FUNC(bool) is_symlink( |
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317 # ifdef BOOST_WINDOWS_API |
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318 const Path & ) |
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319 { |
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320 return false; |
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321 # else |
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322 const Path & ph) |
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323 { |
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324 system_error_type ec; |
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325 file_status result( detail::symlink_status_api( ph.external_file_string(), ec ) ); |
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326 if ( ec ) |
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327 boost::throw_exception( basic_filesystem_error<Path>( |
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328 "boost::filesystem::is_symlink", ph, ec ) ); |
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329 return is_symlink( result ); |
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330 # endif |
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331 } |
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332 |
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333 // VC++ 7.0 and earlier has a serious namespace bug that causes a clash |
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334 // between boost::filesystem::is_empty and the unrelated type trait |
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335 // boost::is_empty. |
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336 |
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337 # if !defined( BOOST_MSVC ) || BOOST_MSVC > 1300 |
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338 BOOST_FS_FUNC(bool) is_empty( const Path & ph ) |
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339 # else |
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340 BOOST_FS_FUNC(bool) _is_empty( const Path & ph ) |
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341 # endif |
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342 { |
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343 detail::query_pair result = detail::is_empty_api( ph.external_file_string() ); |
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344 if ( result.first != 0 ) |
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345 boost::throw_exception( basic_filesystem_error<Path>( |
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346 "boost::filesystem::is_empty", ph, result.first ) ); |
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347 return result.second; |
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348 } |
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349 |
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350 BOOST_FS_FUNC(bool) equivalent( const Path & ph1, const Path & ph2 ) |
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351 { |
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352 detail::query_pair result = detail::equivalent_api( |
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353 ph1.external_file_string(), ph2.external_file_string() ); |
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354 if ( result.first != 0 ) |
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355 boost::throw_exception( basic_filesystem_error<Path>( |
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356 "boost::filesystem::equivalent", ph1, ph2, result.first ) ); |
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357 return result.second; |
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358 } |
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359 |
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360 BOOST_FS_FUNC(boost::uintmax_t) file_size( const Path & ph ) |
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361 { |
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362 detail::uintmax_pair result |
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363 = detail::file_size_api( ph.external_file_string() ); |
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364 if ( result.first != 0 ) |
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365 boost::throw_exception( basic_filesystem_error<Path>( |
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366 "boost::filesystem::file_size", ph, result.first ) ); |
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367 return result.second; |
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368 } |
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369 |
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370 BOOST_FS_FUNC(space_info) space( const Path & ph ) |
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371 { |
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372 detail::space_pair result |
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373 = detail::space_api( ph.external_file_string() ); |
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374 if ( result.first != 0 ) |
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375 boost::throw_exception( basic_filesystem_error<Path>( |
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376 "boost::filesystem::space", ph, result.first ) ); |
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377 return result.second; |
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378 } |
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379 |
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380 BOOST_FS_FUNC(std::time_t) last_write_time( const Path & ph ) |
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381 { |
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382 detail::time_pair result |
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383 = detail::last_write_time_api( ph.external_file_string() ); |
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384 if ( result.first != 0 ) |
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385 boost::throw_exception( basic_filesystem_error<Path>( |
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386 "boost::filesystem::last_write_time", ph, result.first ) ); |
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387 return result.second; |
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388 } |
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389 |
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390 |
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391 // operations --------------------------------------------------------------// |
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392 |
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393 BOOST_FS_FUNC(bool) create_directory( const Path & dir_ph ) |
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394 { |
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395 detail::query_pair result( |
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396 detail::create_directory_api( dir_ph.external_directory_string() ) ); |
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397 if ( result.first != 0 ) |
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398 boost::throw_exception( basic_filesystem_error<Path>( |
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399 "boost::filesystem::create_directory", |
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400 dir_ph, result.first ) ); |
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401 return result.second; |
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402 } |
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403 |
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404 #if !defined(BOOST_WINDOWS_API) || defined(BOOST_FS_HARD_LINK) |
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405 BOOST_FS_FUNC(void) |
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406 create_hard_link( const Path & to_ph, const Path & from_ph ) |
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407 { |
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408 system_error_type result( |
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409 detail::create_hard_link_api( |
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410 to_ph.external_file_string(), |
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411 from_ph.external_file_string() ) ); |
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412 if ( result != 0 ) |
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413 boost::throw_exception( basic_filesystem_error<Path>( |
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414 "boost::filesystem::create_hard_link", |
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415 to_ph, from_ph, result ) ); |
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416 } |
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417 |
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418 BOOST_FS_FUNC(system_error_type) |
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419 create_hard_link( const Path & to_ph, const Path & from_ph, |
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420 system_error_type & ec ) |
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421 { |
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422 ec = detail::create_hard_link_api( |
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423 to_ph.external_file_string(), |
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424 from_ph.external_file_string() ); |
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425 return ec; |
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426 } |
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427 #endif |
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428 |
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429 BOOST_FS_FUNC(void) |
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430 create_symlink( const Path & to_ph, const Path & from_ph ) |
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431 { |
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432 system_error_type result( |
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433 detail::create_symlink_api( |
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434 to_ph.external_file_string(), |
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435 from_ph.external_file_string() ) ); |
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436 if ( result ) |
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437 boost::throw_exception( basic_filesystem_error<Path>( |
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438 "boost::filesystem::create_symlink", |
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439 to_ph, from_ph, result ) ); |
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440 } |
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441 |
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442 BOOST_FS_FUNC(system_error_type) |
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443 create_symlink( const Path & to_ph, const Path & from_ph, |
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444 system_error_type & ec ) |
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445 { |
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446 ec = detail::create_symlink_api( |
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447 to_ph.external_file_string(), |
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448 from_ph.external_file_string() ); |
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449 return ec; |
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450 } |
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451 |
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452 BOOST_FS_FUNC(bool) remove( const Path & ph ) |
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453 { |
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454 if ( exists( ph ) |
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455 || is_symlink( ph ) ) // handle dangling symbolic links |
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456 // note that the POSIX behavior for symbolic links is what we want; |
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457 // the link rather than what it points to is deleted. Windows behavior |
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458 // doesn't matter; is_symlink() is always false on Windows. |
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459 { |
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460 system_error_type result = detail::remove_api( ph.external_file_string() ); |
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461 if ( result != 0 ) |
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462 boost::throw_exception( basic_filesystem_error<Path>( |
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463 "boost::filesystem::remove", |
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464 ph, result ) ); |
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465 return true; |
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466 } |
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467 return false; |
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468 } |
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469 |
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470 BOOST_FS_FUNC(unsigned long) remove_all( const Path & ph ) |
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471 { |
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472 return exists( ph )|| is_symlink( ph ) |
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473 ? detail::remove_all_aux( ph ) : 0; |
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474 } |
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475 |
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476 BOOST_FS_FUNC(void) rename( const Path & from_path, const Path & to_path ) |
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477 { |
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478 system_error_type result = detail::rename_api( |
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479 from_path.external_directory_string(), |
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480 to_path.external_directory_string() ); |
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481 if ( result != 0 ) |
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482 boost::throw_exception( basic_filesystem_error<Path>( |
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483 "boost::filesystem::rename", |
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484 from_path, to_path, result ) ); |
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485 } |
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486 |
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487 BOOST_FS_FUNC(void) copy_file( const Path & from_path, const Path & to_path ) |
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488 { |
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489 system_error_type result = detail::copy_file_api( |
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490 from_path.external_directory_string(), |
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491 to_path.external_directory_string() ); |
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492 if ( result != 0 ) |
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493 boost::throw_exception( basic_filesystem_error<Path>( |
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494 "boost::filesystem::copy_file", |
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495 from_path, to_path, result ) ); |
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496 } |
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497 |
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498 template< class Path > |
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499 Path current_path() |
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500 { |
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501 typename Path::external_string_type ph; |
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502 boost::filesystem::system_error_type result; |
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503 if ( (result = detail::get_current_path_api( ph )) != 0 ) |
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504 boost::throw_exception( basic_filesystem_error<Path>( |
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505 "boost::filesystem::current_path", result ) ); |
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506 return Path( Path::traits_type::to_internal( ph ) ); |
|
507 } |
|
508 |
|
509 template< class Path > |
|
510 const Path & initial_path() |
|
511 { |
|
512 static Path init_path; |
|
513 if ( init_path.empty() ) init_path = current_path<Path>(); |
|
514 return init_path; |
|
515 } |
|
516 |
|
517 # ifndef BOOST_FILESYSTEM_NO_DEPRECATED |
|
518 // legacy support |
|
519 inline path current_path() // overload supports pre-i18n apps |
|
520 { return current_path<boost::filesystem::path>(); } |
|
521 inline const path & initial_path() // overload supports pre-i18n apps |
|
522 { return initial_path<boost::filesystem::path>(); } |
|
523 # endif |
|
524 |
|
525 BOOST_FS_FUNC(Path) system_complete( const Path & ph ) |
|
526 { |
|
527 # ifdef BOOST_WINDOWS_API |
|
528 if ( ph.empty() ) return ph; |
|
529 BOOST_FS_TYPENAME Path::external_string_type sys_ph; |
|
530 boost::filesystem::system_error_type result; |
|
531 if ( (result = detail::get_full_path_name_api( ph.external_file_string(), |
|
532 sys_ph )) != 0 ) |
|
533 boost::throw_exception( basic_filesystem_error<Path>( |
|
534 "boost::filesystem::system_complete", ph, result ) ); |
|
535 return Path( Path::traits_type::to_internal( sys_ph ) ); |
|
536 # else |
|
537 return (ph.empty() || ph.is_complete()) |
|
538 ? ph : current_path<Path>() / ph; |
|
539 # endif |
|
540 } |
|
541 |
|
542 BOOST_FS_FUNC(Path) |
|
543 complete( const Path & ph, |
|
544 const Path & base/* = initial_path<Path>() */) |
|
545 { |
|
546 BOOST_ASSERT( base.is_complete() |
|
547 && (ph.is_complete() || !ph.has_root_name()) |
|
548 && "boost::filesystem::complete() precondition not met" ); |
|
549 # ifdef BOOST_WINDOWS_PATH |
|
550 if (ph.empty() || ph.is_complete()) return ph; |
|
551 if ( !ph.has_root_name() ) |
|
552 return ph.has_root_directory() |
|
553 ? Path( base.root_name() ) / ph |
|
554 : base / ph; |
|
555 return base / ph; |
|
556 # else |
|
557 return (ph.empty() || ph.is_complete()) ? ph : base / ph; |
|
558 # endif |
|
559 } |
|
560 |
|
561 // VC++ 7.1 had trouble with default arguments, so separate one argument |
|
562 // signatures are provided as workarounds; the effect is the same. |
|
563 BOOST_FS_FUNC(Path) complete( const Path & ph ) |
|
564 { return complete( ph, initial_path<Path>() ); } |
|
565 |
|
566 BOOST_FS_FUNC(void) |
|
567 last_write_time( const Path & ph, const std::time_t new_time ) |
|
568 { |
|
569 boost::filesystem::system_error_type result; |
|
570 if ( (result = detail::last_write_time_api( ph.external_file_string(), |
|
571 new_time )) != 0 ) |
|
572 boost::throw_exception( basic_filesystem_error<Path>( |
|
573 "boost::filesystem::last_write_time", ph, result ) ); |
|
574 } |
|
575 |
|
576 # ifndef BOOST_FILESYSTEM_NARROW_ONLY |
|
577 |
|
578 // "do-the-right-thing" overloads ---------------------------------------// |
|
579 |
|
580 inline file_status status( const path & ph ) |
|
581 { return status<path>( ph ); } |
|
582 inline file_status status( const wpath & ph ) |
|
583 { return status<wpath>( ph ); } |
|
584 |
|
585 inline file_status status( const path & ph, system_error_type & ec ) |
|
586 { return status<path>( ph, ec ); } |
|
587 inline file_status status( const wpath & ph, system_error_type & ec ) |
|
588 { return status<wpath>( ph, ec ); } |
|
589 |
|
590 inline file_status symlink_status( const path & ph ) |
|
591 { return symlink_status<path>( ph ); } |
|
592 inline file_status symlink_status( const wpath & ph ) |
|
593 { return symlink_status<wpath>( ph ); } |
|
594 |
|
595 inline file_status symlink_status( const path & ph, system_error_type & ec ) |
|
596 { return symlink_status<path>( ph, ec ); } |
|
597 inline file_status symlink_status( const wpath & ph, system_error_type & ec ) |
|
598 { return symlink_status<wpath>( ph, ec ); } |
|
599 |
|
600 inline bool exists( const path & ph ) { return exists<path>( ph ); } |
|
601 inline bool exists( const wpath & ph ) { return exists<wpath>( ph ); } |
|
602 |
|
603 inline bool is_directory( const path & ph ) |
|
604 { return is_directory<path>( ph ); } |
|
605 inline bool is_directory( const wpath & ph ) |
|
606 { return is_directory<wpath>( ph ); } |
|
607 |
|
608 inline bool is_regular( const path & ph ) |
|
609 { return is_regular<path>( ph ); } |
|
610 inline bool is_regular( const wpath & ph ) |
|
611 { return is_regular<wpath>( ph ); } |
|
612 |
|
613 inline bool is_other( const path & ph ) |
|
614 { return is_other<path>( ph ); } |
|
615 inline bool is_other( const wpath & ph ) |
|
616 { return is_other<wpath>( ph ); } |
|
617 |
|
618 inline bool is_symlink( const path & ph ) |
|
619 { return is_symlink<path>( ph ); } |
|
620 inline bool is_symlink( const wpath & ph ) |
|
621 { return is_symlink<wpath>( ph ); } |
|
622 |
|
623 inline bool is_empty( const path & ph ) |
|
624 { return is_empty<path>( ph ); } |
|
625 inline bool is_empty( const wpath & ph ) |
|
626 { return is_empty<wpath>( ph ); } |
|
627 |
|
628 inline bool equivalent( const path & ph1, const path & ph2 ) |
|
629 { return equivalent<path>( ph1, ph2 ); } |
|
630 inline bool equivalent( const wpath & ph1, const wpath & ph2 ) |
|
631 { return equivalent<wpath>( ph1, ph2 ); } |
|
632 |
|
633 inline boost::uintmax_t file_size( const path & ph ) |
|
634 { return file_size<path>( ph ); } |
|
635 inline boost::uintmax_t file_size( const wpath & ph ) |
|
636 { return file_size<wpath>( ph ); } |
|
637 |
|
638 inline space_info space( const path & ph ) |
|
639 { return space<path>( ph ); } |
|
640 inline space_info space( const wpath & ph ) |
|
641 { return space<wpath>( ph ); } |
|
642 |
|
643 inline std::time_t last_write_time( const path & ph ) |
|
644 { return last_write_time<path>( ph ); } |
|
645 inline std::time_t last_write_time( const wpath & ph ) |
|
646 { return last_write_time<wpath>( ph ); } |
|
647 |
|
648 inline bool create_directory( const path & dir_ph ) |
|
649 { return create_directory<path>( dir_ph ); } |
|
650 inline bool create_directory( const wpath & dir_ph ) |
|
651 { return create_directory<wpath>( dir_ph ); } |
|
652 |
|
653 #if !defined(BOOST_WINDOWS_API) || defined(BOOST_FS_HARD_LINK) |
|
654 inline void create_hard_link( const path & to_ph, |
|
655 const path & from_ph ) |
|
656 { return create_hard_link<path>( to_ph, from_ph ); } |
|
657 inline void create_hard_link( const wpath & to_ph, |
|
658 const wpath & from_ph ) |
|
659 { return create_hard_link<wpath>( to_ph, from_ph ); } |
|
660 |
|
661 inline system_error_type create_hard_link( const path & to_ph, |
|
662 const path & from_ph, system_error_type & ec ) |
|
663 { return create_hard_link<path>( to_ph, from_ph, ec ); } |
|
664 inline system_error_type create_hard_link( const wpath & to_ph, |
|
665 const wpath & from_ph, system_error_type & ec ) |
|
666 { return create_hard_link<wpath>( to_ph, from_ph, ec ); } |
|
667 #endif |
|
668 |
|
669 inline void create_symlink( const path & to_ph, |
|
670 const path & from_ph ) |
|
671 { return create_symlink<path>( to_ph, from_ph ); } |
|
672 inline void create_symlink( const wpath & to_ph, |
|
673 const wpath & from_ph ) |
|
674 { return create_symlink<wpath>( to_ph, from_ph ); } |
|
675 |
|
676 inline system_error_type create_symlink( const path & to_ph, |
|
677 const path & from_ph, system_error_type & ec ) |
|
678 { return create_symlink<path>( to_ph, from_ph, ec ); } |
|
679 inline system_error_type create_symlink( const wpath & to_ph, |
|
680 const wpath & from_ph, system_error_type & ec ) |
|
681 { return create_symlink<wpath>( to_ph, from_ph, ec ); } |
|
682 |
|
683 inline bool remove( const path & ph ) |
|
684 { return remove<path>( ph ); } |
|
685 inline bool remove( const wpath & ph ) |
|
686 { return remove<wpath>( ph ); } |
|
687 |
|
688 inline unsigned long remove_all( const path & ph ) |
|
689 { return remove_all<path>( ph ); } |
|
690 inline unsigned long remove_all( const wpath & ph ) |
|
691 { return remove_all<wpath>( ph ); } |
|
692 |
|
693 inline void rename( const path & from_path, const path & to_path ) |
|
694 { return rename<path>( from_path, to_path ); } |
|
695 inline void rename( const wpath & from_path, const wpath & to_path ) |
|
696 { return rename<wpath>( from_path, to_path ); } |
|
697 |
|
698 inline void copy_file( const path & from_path, const path & to_path ) |
|
699 { return copy_file<path>( from_path, to_path ); } |
|
700 inline void copy_file( const wpath & from_path, const wpath & to_path ) |
|
701 { return copy_file<wpath>( from_path, to_path ); } |
|
702 |
|
703 inline path system_complete( const path & ph ) |
|
704 { return system_complete<path>( ph ); } |
|
705 inline wpath system_complete( const wpath & ph ) |
|
706 { return system_complete<wpath>( ph ); } |
|
707 |
|
708 inline path complete( const path & ph, |
|
709 const path & base/* = initial_path<path>()*/ ) |
|
710 { return complete<path>( ph, base ); } |
|
711 inline wpath complete( const wpath & ph, |
|
712 const wpath & base/* = initial_path<wpath>()*/ ) |
|
713 { return complete<wpath>( ph, base ); } |
|
714 |
|
715 inline path complete( const path & ph ) |
|
716 { return complete<path>( ph, initial_path<path>() ); } |
|
717 inline wpath complete( const wpath & ph ) |
|
718 { return complete<wpath>( ph, initial_path<wpath>() ); } |
|
719 |
|
720 inline void last_write_time( const path & ph, const std::time_t new_time ) |
|
721 { last_write_time<path>( ph, new_time ); } |
|
722 inline void last_write_time( const wpath & ph, const std::time_t new_time ) |
|
723 { last_write_time<wpath>( ph, new_time ); } |
|
724 |
|
725 # endif // BOOST_FILESYSTEM_NARROW_ONLY |
|
726 |
|
727 namespace detail |
|
728 { |
|
729 template<class Path> |
|
730 unsigned long remove_all_aux( const Path & ph ) |
|
731 { |
|
732 static const boost::filesystem::basic_directory_iterator<Path> end_itr; |
|
733 unsigned long count = 1; |
|
734 if ( !boost::filesystem::is_symlink( ph ) // don't recurse symbolic links |
|
735 && boost::filesystem::is_directory( ph ) ) |
|
736 { |
|
737 for ( boost::filesystem::basic_directory_iterator<Path> itr( ph ); |
|
738 itr != end_itr; ++itr ) |
|
739 { |
|
740 count += remove_all_aux( itr->path() ); |
|
741 } |
|
742 } |
|
743 boost::filesystem::remove( ph ); |
|
744 return count; |
|
745 } |
|
746 |
|
747 // test helper -------------------------------------------------------------// |
|
748 |
|
749 // not part of the documented interface because false positives are possible; |
|
750 // there is no law that says that an OS that has large stat.st_size |
|
751 // actually supports large file sizes. |
|
752 BOOST_FILESYSTEM_DECL bool possible_large_file_size_support(); |
|
753 |
|
754 // directory_iterator helpers ----------------------------------------------// |
|
755 |
|
756 // forwarding functions avoid need for BOOST_FILESYSTEM_DECL for class |
|
757 // basic_directory_iterator, and so avoid iterator_facade DLL template |
|
758 // problems. They also overload to the proper external path character type. |
|
759 |
|
760 BOOST_FILESYSTEM_DECL boost::filesystem::system_error_type |
|
761 dir_itr_first( void *& handle, |
|
762 #if defined(BOOST_POSIX_API) |
|
763 void *& buffer, |
|
764 #endif |
|
765 const std::string & dir_path, |
|
766 std::string & target, file_status & fs, file_status & symlink_fs ); |
|
767 // eof: return==0 && handle==0 |
|
768 |
|
769 BOOST_FILESYSTEM_DECL boost::filesystem::system_error_type |
|
770 dir_itr_increment( void *& handle, |
|
771 #if defined(BOOST_POSIX_API) |
|
772 void *& buffer, |
|
773 #endif |
|
774 std::string & target, file_status & fs, file_status & symlink_fs ); |
|
775 // eof: return==0 && handle==0 |
|
776 |
|
777 BOOST_FILESYSTEM_DECL boost::filesystem::system_error_type |
|
778 dir_itr_close( void *& handle |
|
779 #if defined(BOOST_POSIX_API) |
|
780 , void *& buffer |
|
781 #endif |
|
782 ); |
|
783 // Effects: none if handle==0, otherwise close handle, set handle=0 |
|
784 |
|
785 # if defined(BOOST_WINDOWS_API) && !defined(BOOST_FILESYSTEM_NARROW_ONLY) |
|
786 BOOST_FILESYSTEM_DECL boost::filesystem::system_error_type |
|
787 dir_itr_first( void *& handle, const std::wstring & ph, |
|
788 std::wstring & target, file_status & fs, file_status & symlink_fs ); |
|
789 BOOST_FILESYSTEM_DECL boost::filesystem::system_error_type |
|
790 dir_itr_increment( void *& handle, std::wstring & target, |
|
791 file_status & fs, file_status & symlink_fs ); |
|
792 # endif |
|
793 |
|
794 template< class Path > |
|
795 class dir_itr_imp |
|
796 { |
|
797 public: |
|
798 basic_directory_entry<Path> m_directory_entry; |
|
799 void * m_handle; |
|
800 # ifdef BOOST_POSIX_API |
|
801 void * m_buffer; // see dir_itr_increment implementation |
|
802 # endif |
|
803 dir_itr_imp() : m_handle(0) |
|
804 # ifdef BOOST_POSIX_API |
|
805 , m_buffer(0) |
|
806 # endif |
|
807 {} |
|
808 |
|
809 ~dir_itr_imp() { dir_itr_close( m_handle |
|
810 #if defined(BOOST_POSIX_API) |
|
811 , m_buffer |
|
812 #endif |
|
813 ); } |
|
814 }; |
|
815 |
|
816 BOOST_FILESYSTEM_DECL extern system_error_type not_found_error; |
|
817 } // namespace detail |
|
818 |
|
819 // basic_directory_iterator ------------------------------------------------// |
|
820 |
|
821 template< class Path > |
|
822 class basic_directory_iterator |
|
823 : public boost::iterator_facade< |
|
824 basic_directory_iterator<Path>, |
|
825 basic_directory_entry<Path>, |
|
826 boost::single_pass_traversal_tag > |
|
827 { |
|
828 public: |
|
829 typedef Path path_type; |
|
830 |
|
831 basic_directory_iterator(){} // creates the "end" iterator |
|
832 |
|
833 explicit basic_directory_iterator( const Path & dir_path ); |
|
834 basic_directory_iterator( const Path & dir_path, system_error_type & ec ); |
|
835 |
|
836 private: |
|
837 |
|
838 // shared_ptr provides shallow-copy semantics required for InputIterators. |
|
839 // m_imp.get()==0 indicates the end iterator. |
|
840 boost::shared_ptr< detail::dir_itr_imp< Path > > m_imp; |
|
841 |
|
842 friend class boost::iterator_core_access; |
|
843 |
|
844 typename boost::iterator_facade< |
|
845 basic_directory_iterator<Path>, |
|
846 basic_directory_entry<Path>, |
|
847 boost::single_pass_traversal_tag >::reference dereference() const |
|
848 { |
|
849 BOOST_ASSERT( m_imp.get() && "attempt to dereference end iterator" ); |
|
850 return m_imp->m_directory_entry; |
|
851 } |
|
852 |
|
853 void increment(); |
|
854 |
|
855 bool equal( const basic_directory_iterator & rhs ) const |
|
856 { return m_imp == rhs.m_imp; } |
|
857 |
|
858 system_error_type m_init( const Path & dir_path ); |
|
859 }; |
|
860 |
|
861 typedef basic_directory_iterator< path > directory_iterator; |
|
862 # ifndef BOOST_FILESYSTEM_NARROW_ONLY |
|
863 typedef basic_directory_iterator< wpath > wdirectory_iterator; |
|
864 # endif |
|
865 |
|
866 // basic_directory_iterator implementation ---------------------------// |
|
867 |
|
868 template<class Path> |
|
869 system_error_type basic_directory_iterator<Path>::m_init( |
|
870 const Path & dir_path ) |
|
871 { |
|
872 if ( dir_path.empty() ) |
|
873 { |
|
874 m_imp.reset(); |
|
875 return detail::not_found_error; |
|
876 } |
|
877 system_error_type sys_err; |
|
878 typename Path::external_string_type name; |
|
879 file_status fs, symlink_fs; |
|
880 |
|
881 if ( (sys_err = detail::dir_itr_first( m_imp->m_handle, |
|
882 #if defined(BOOST_POSIX_API) |
|
883 m_imp->m_buffer, |
|
884 #endif |
|
885 dir_path.external_directory_string(), |
|
886 name, fs, symlink_fs )) != 0 ) |
|
887 { |
|
888 m_imp.reset(); |
|
889 return sys_err; |
|
890 } |
|
891 |
|
892 if ( m_imp->m_handle == 0 ) m_imp.reset(); // eof, so make end iterator |
|
893 else // not eof |
|
894 { |
|
895 m_imp->m_directory_entry.assign( dir_path |
|
896 / Path::traits_type::to_internal( name ), fs, symlink_fs ); |
|
897 if ( name[0] == dot<Path>::value // dot or dot-dot |
|
898 && (name.size() == 1 |
|
899 || (name[1] == dot<Path>::value |
|
900 && name.size() == 2)) ) |
|
901 { increment(); } |
|
902 } |
|
903 return 0; |
|
904 } |
|
905 |
|
906 template<class Path> |
|
907 basic_directory_iterator<Path>::basic_directory_iterator( |
|
908 const Path & dir_path ) |
|
909 : m_imp( new detail::dir_itr_imp<Path> ) |
|
910 { |
|
911 system_error_type ec( m_init(dir_path) ); |
|
912 if ( ec != 0 ) |
|
913 { |
|
914 boost::throw_exception( basic_filesystem_error<Path>( |
|
915 "boost::filesystem::basic_directory_iterator constructor", |
|
916 dir_path, ec ) ); |
|
917 } |
|
918 } |
|
919 |
|
920 template<class Path> |
|
921 basic_directory_iterator<Path>::basic_directory_iterator( |
|
922 const Path & dir_path, system_error_type & ec ) |
|
923 : m_imp( new detail::dir_itr_imp<Path> ) |
|
924 { |
|
925 ec = m_init(dir_path); |
|
926 } |
|
927 |
|
928 template<class Path> |
|
929 void basic_directory_iterator<Path>::increment() |
|
930 { |
|
931 BOOST_ASSERT( m_imp.get() && "attempt to increment end iterator" ); |
|
932 BOOST_ASSERT( m_imp->m_handle != 0 && "internal program error" ); |
|
933 |
|
934 system_error_type sys_err(0); |
|
935 typename Path::external_string_type name; |
|
936 file_status fs, symlink_fs; |
|
937 |
|
938 for (;;) |
|
939 { |
|
940 if ( (sys_err = detail::dir_itr_increment( m_imp->m_handle, |
|
941 #if defined(BOOST_POSIX_API) |
|
942 m_imp->m_buffer, |
|
943 #endif |
|
944 name, fs, symlink_fs )) != 0 ) |
|
945 { |
|
946 boost::throw_exception( basic_filesystem_error<Path>( |
|
947 "boost::filesystem::basic_directory_iterator increment", |
|
948 m_imp->m_directory_entry.path().branch_path(), sys_err ) ); |
|
949 } |
|
950 if ( m_imp->m_handle == 0 ) { m_imp.reset(); return; } // eof, make end |
|
951 if ( !(name[0] == dot<Path>::value // !(dot or dot-dot) |
|
952 && (name.size() == 1 |
|
953 || (name[1] == dot<Path>::value |
|
954 && name.size() == 2))) ) |
|
955 { |
|
956 m_imp->m_directory_entry.replace_leaf( |
|
957 Path::traits_type::to_internal( name ), fs, symlink_fs ); |
|
958 return; |
|
959 } |
|
960 } |
|
961 } |
|
962 |
|
963 // basic_directory_entry -----------------------------------------------// |
|
964 |
|
965 template<class Path> |
|
966 class basic_directory_entry |
|
967 { |
|
968 public: |
|
969 typedef Path path_type; |
|
970 typedef typename Path::string_type string_type; |
|
971 |
|
972 // compiler generated copy-ctor, copy assignment, and destructor apply |
|
973 |
|
974 basic_directory_entry() {} |
|
975 explicit basic_directory_entry( const path_type & p, |
|
976 file_status st = file_status(), file_status symlink_st=file_status() ) |
|
977 : m_path(p), m_status(st), m_symlink_status(symlink_st) |
|
978 {} |
|
979 |
|
980 void assign( const path_type & p, |
|
981 file_status st, file_status symlink_st ) |
|
982 { m_path = p; m_status = st; m_symlink_status = symlink_st; } |
|
983 |
|
984 void replace_leaf( const string_type & s, |
|
985 file_status st, file_status symlink_st ) |
|
986 { |
|
987 m_path.remove_leaf(); |
|
988 m_path /= s; |
|
989 m_status = st; |
|
990 m_symlink_status = symlink_st; |
|
991 } |
|
992 |
|
993 const Path & path() const { return m_path; } |
|
994 file_status status() const; |
|
995 file_status status( system_error_type & ec ) const; |
|
996 file_status symlink_status() const; |
|
997 file_status symlink_status( system_error_type & ec ) const; |
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998 |
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999 // conversion simplifies the most common use of basic_directory_entry |
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1000 operator const path_type &() const { return m_path; } |
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1001 |
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1002 # ifndef BOOST_FILESYSTEM_NO_DEPRECATED |
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1003 // deprecated functions preserve common use cases in legacy code |
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1004 typename Path::string_type leaf() const |
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1005 { |
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1006 return path().leaf(); |
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1007 } |
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1008 typename Path::string_type string() const |
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1009 { |
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1010 return path().string(); |
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1011 } |
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1012 # endif |
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1013 |
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1014 private: |
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1015 path_type m_path; |
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1016 mutable file_status m_status; // stat()-like |
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1017 mutable file_status m_symlink_status; // lstat()-like |
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1018 // note: m_symlink_status is not used by Windows implementation |
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1019 |
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1020 }; // basic_directory_status |
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1021 |
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1022 typedef basic_directory_entry<path> directory_entry; |
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1023 # ifndef BOOST_FILESYSTEM_NARROW_ONLY |
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1024 typedef basic_directory_entry<wpath> wdirectory_entry; |
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1025 # endif |
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1026 |
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1027 // basic_directory_entry implementation --------------------------------// |
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1028 |
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1029 template<class Path> |
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1030 file_status |
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1031 basic_directory_entry<Path>::status() const |
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1032 { |
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1033 if ( !status_known( m_status ) ) |
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1034 { |
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1035 # ifndef BOOST_WINDOWS_API |
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1036 if ( status_known( m_symlink_status ) |
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1037 && !is_symlink( m_symlink_status ) ) |
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1038 { m_status = m_symlink_status; } |
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1039 else { m_status = boost::filesystem::status( m_path ); } |
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1040 # else |
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1041 m_status = boost::filesystem::status( m_path ); |
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1042 # endif |
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1043 } |
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1044 return m_status; |
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1045 } |
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1046 |
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1047 template<class Path> |
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1048 file_status |
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1049 basic_directory_entry<Path>::status( system_error_type & ec ) const |
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1050 { |
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1051 if ( !status_known( m_status ) ) |
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1052 { |
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1053 # ifndef BOOST_WINDOWS_API |
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1054 if ( status_known( m_symlink_status ) |
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1055 && !is_symlink( m_symlink_status ) ) |
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1056 { ec = 0; m_status = m_symlink_status; } |
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1057 else { m_status = boost::filesystem::status( m_path, ec ); } |
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1058 # else |
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1059 m_status = boost::filesystem::status( m_path, ec ); |
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1060 # endif |
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1061 } |
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1062 else ec = 0; |
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1063 return m_status; |
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1064 } |
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1065 |
|
1066 template<class Path> |
|
1067 file_status |
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1068 basic_directory_entry<Path>::symlink_status() const |
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1069 { |
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1070 # ifndef BOOST_WINDOWS_API |
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1071 if ( !status_known( m_symlink_status ) ) |
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1072 { m_symlink_status = boost::filesystem::symlink_status( m_path ); } |
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1073 return m_symlink_status; |
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1074 # else |
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1075 return status(); |
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1076 # endif |
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1077 } |
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1078 |
|
1079 template<class Path> |
|
1080 file_status |
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1081 basic_directory_entry<Path>::symlink_status( system_error_type & ec ) const |
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1082 { |
|
1083 # ifndef BOOST_WINDOWS_API |
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1084 if ( !status_known( m_symlink_status ) ) |
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1085 { m_symlink_status = boost::filesystem::symlink_status( m_path, ec ); } |
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1086 else ec = 0; |
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1087 return m_symlink_status; |
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1088 # else |
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1089 return status( ec ); |
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1090 # endif |
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1091 } |
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1092 } // namespace filesystem |
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1093 } // namespace boost |
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1094 |
|
1095 #undef BOOST_FS_FUNC |
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1096 |
|
1097 |
|
1098 #include <boost/config/abi_suffix.hpp> // pops abi_prefix.hpp pragmas |
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1099 #endif // BOOST_FILESYSTEM_OPERATIONS_HPP |