boost/filesystem/v3/operations.hpp
// boost/filesystem/operations.hpp ---------------------------------------------------// // Copyright Beman Dawes 2002-2009 // Copyright Jan Langer 2002 // Copyright Dietmar Kuehl 2001 // Copyright Vladimir Prus 2002 // Distributed under the Boost Software License, Version 1.0. // See http://www.boost.org/LICENSE_1_0.txt // Library home page: http://www.boost.org/libs/filesystem //--------------------------------------------------------------------------------------// #ifndef BOOST_FILESYSTEM3_OPERATIONS_HPP #define BOOST_FILESYSTEM3_OPERATIONS_HPP #include <boost/config.hpp> # if defined( BOOST_NO_STD_WSTRING ) # error Configuration not supported: Boost.Filesystem V3 and later requires std::wstring support # endif #include <boost/filesystem/v3/config.hpp> #include <boost/filesystem/v3/path.hpp> #include <boost/detail/scoped_enum_emulation.hpp> #include <boost/detail/bitmask.hpp> #include <boost/system/error_code.hpp> #include <boost/system/system_error.hpp> #include <boost/shared_ptr.hpp> #include <boost/utility/enable_if.hpp> #include <boost/type_traits/is_same.hpp> #include <boost/iterator.hpp> #include <boost/cstdint.hpp> #include <boost/assert.hpp> #include <string> #include <utility> // for pair #include <ctime> #include <vector> #include <stack> #ifdef BOOST_WINDOWS_API # include <fstream> #endif #include <boost/config/abi_prefix.hpp> // must be the last #include //--------------------------------------------------------------------------------------// namespace boost { namespace filesystem3 { //--------------------------------------------------------------------------------------// // // // support classes and enums // // // //--------------------------------------------------------------------------------------// enum file_type { status_error, # ifndef BOOST_FILESYSTEM_NO_DEPRECATED status_unknown = status_error, # endif file_not_found, regular_file, directory_file, // the following may not apply to some operating systems or file systems symlink_file, block_file, character_file, fifo_file, socket_file, reparse_file, // Windows: FILE_ATTRIBUTE_REPARSE_POINT that is not a symlink type_unknown, // file does exist, but isn't one of the above types or // we don't have strong enough permission to find its type _detail_directory_symlink // internal use only; never exposed to users }; class BOOST_FILESYSTEM_DECL file_status { public: file_status() : m_value(status_error) {} explicit file_status(file_type v) : m_value(v) {} void type(file_type v) { m_value = v; } file_type type() const { return m_value; } bool operator==(const file_status& rhs) const { return type() == rhs.type(); } bool operator!=(const file_status& rhs) const { return !(*this == rhs); } private: // the internal representation is unspecified so that additional state // information such as permissions can be added in the future; this // implementation just uses file_type as the internal representation file_type m_value; }; inline bool status_known(file_status f) { return f.type() != status_error; } inline bool exists(file_status f) { return f.type() != status_error && f.type() != file_not_found; } inline bool is_regular_file(file_status f){ return f.type() == regular_file; } inline bool is_directory(file_status f) { return f.type() == directory_file; } inline bool is_symlink(file_status f) { return f.type() == symlink_file; } inline bool is_other(file_status f) { return exists(f) && !is_regular_file(f) && !is_directory(f) && !is_symlink(f); } # ifndef BOOST_FILESYSTEM_NO_DEPRECATED inline bool is_regular(file_status f) { return f.type() == regular_file; } # endif struct space_info { // all values are byte counts boost::uintmax_t capacity; boost::uintmax_t free; // <= capacity boost::uintmax_t available; // <= free }; BOOST_SCOPED_ENUM_START(copy_option) {none, fail_if_exists = none, overwrite_if_exists}; BOOST_SCOPED_ENUM_END //--------------------------------------------------------------------------------------// // implementation details // //--------------------------------------------------------------------------------------// namespace detail { BOOST_FILESYSTEM_DECL file_status status(const path&p, system::error_code* ec=0); BOOST_FILESYSTEM_DECL file_status symlink_status(const path& p, system::error_code* ec=0); BOOST_FILESYSTEM_DECL bool is_empty(const path& p, system::error_code* ec=0); BOOST_FILESYSTEM_DECL path initial_path(system::error_code* ec=0); BOOST_FILESYSTEM_DECL void copy(const path& from, const path& to, system::error_code* ec=0); BOOST_FILESYSTEM_DECL void copy_directory(const path& from, const path& to, system::error_code* ec=0); BOOST_FILESYSTEM_DECL void copy_file(const path& from, const path& to, BOOST_SCOPED_ENUM(copy_option) option, // See ticket #2925 system::error_code* ec=0); BOOST_FILESYSTEM_DECL void copy_symlink(const path& existing_symlink, const path& new_symlink, system::error_code* ec=0); BOOST_FILESYSTEM_DECL bool create_directories(const path& p, system::error_code* ec=0); BOOST_FILESYSTEM_DECL bool create_directory(const path& p, system::error_code* ec=0); BOOST_FILESYSTEM_DECL void create_directory_symlink(const path& to, const path& from, system::error_code* ec=0); BOOST_FILESYSTEM_DECL void create_hard_link(const path& to, const path& from, system::error_code* ec=0); BOOST_FILESYSTEM_DECL void create_symlink(const path& to, const path& from, system::error_code* ec=0); BOOST_FILESYSTEM_DECL path current_path(system::error_code* ec=0); BOOST_FILESYSTEM_DECL void current_path(const path& p, system::error_code* ec=0); BOOST_FILESYSTEM_DECL bool equivalent(const path& p1, const path& p2, system::error_code* ec=0); BOOST_FILESYSTEM_DECL boost::uintmax_t file_size(const path& p, system::error_code* ec=0); BOOST_FILESYSTEM_DECL boost::uintmax_t hard_link_count(const path& p, system::error_code* ec=0); BOOST_FILESYSTEM_DECL std::time_t last_write_time(const path& p, system::error_code* ec=0); BOOST_FILESYSTEM_DECL void last_write_time(const path& p, const std::time_t new_time, system::error_code* ec=0); BOOST_FILESYSTEM_DECL path read_symlink(const path& p, system::error_code* ec=0); BOOST_FILESYSTEM_DECL // For standardization, if the committee doesn't like "remove", consider "eliminate" bool remove(const path& p, system::error_code* ec=0); BOOST_FILESYSTEM_DECL boost::uintmax_t remove_all(const path& p, system::error_code* ec=0); BOOST_FILESYSTEM_DECL void rename(const path& old_p, const path& new_p, system::error_code* ec=0); BOOST_FILESYSTEM_DECL void resize_file(const path& p, uintmax_t size, system::error_code* ec=0); BOOST_FILESYSTEM_DECL space_info space(const path& p, system::error_code* ec=0); BOOST_FILESYSTEM_DECL path system_complete(const path& p, system::error_code* ec=0); BOOST_FILESYSTEM_DECL path temp_directory_path(system::error_code* ec=0); BOOST_FILESYSTEM_DECL path unique_path(const path& p, system::error_code* ec=0); } // namespace detail //--------------------------------------------------------------------------------------// // // // status query functions // // // //--------------------------------------------------------------------------------------// inline file_status status(const path& p) {return detail::status(p);} inline file_status status(const path& p, system::error_code& ec) {return detail::status(p, &ec);} inline file_status symlink_status(const path& p) {return detail::symlink_status(p);} inline file_status symlink_status(const path& p, system::error_code& ec) {return detail::symlink_status(p, &ec);} inline bool exists(const path& p) {return exists(detail::status(p));} inline bool exists(const path& p, system::error_code& ec) {return exists(detail::status(p, &ec));} inline bool is_directory(const path& p) {return is_directory(detail::status(p));} inline bool is_directory(const path& p, system::error_code& ec) {return is_directory(detail::status(p, &ec));} inline bool is_regular_file(const path& p) {return is_regular_file(detail::status(p));} inline bool is_regular_file(const path& p, system::error_code& ec) {return is_regular_file(detail::status(p, &ec));} inline bool is_other(const path& p) {return is_other(detail::status(p));} inline bool is_other(const path& p, system::error_code& ec) {return is_other(detail::status(p, &ec));} inline bool is_symlink(const path& p) {return is_symlink(detail::symlink_status(p));} inline bool is_symlink(const path& p, system::error_code& ec) {return is_symlink(detail::symlink_status(p, &ec));} # ifndef BOOST_FILESYSTEM_NO_DEPRECATED inline bool is_regular(const path& p) {return is_regular(detail::status(p));} inline bool is_regular(const path& p, system::error_code& ec) {return is_regular(detail::status(p, &ec));} # endif inline bool is_empty(const path& p) {return detail::is_empty(p);} inline bool is_empty(const path& p, system::error_code& ec) {return detail::is_empty(p, &ec);} //--------------------------------------------------------------------------------------// // // // operational functions // // in alphabetical order, unless otherwise noted // // // //--------------------------------------------------------------------------------------// // forward declarations path current_path(); // fwd declaration path initial_path(); BOOST_FILESYSTEM_DECL path absolute(const path& p, const path& base=current_path()); // If base.is_absolute(), throws nothing. Thus no need for ec argument # ifndef BOOST_FILESYSTEM_NO_DEPRECATED inline path complete(const path& p) { return absolute(p, initial_path()); } inline path complete(const path& p, const path& base) { return absolute(p, base); } # endif inline void copy(const path& from, const path& to) {detail::copy(from, to);} inline void copy(const path& from, const path& to, system::error_code& ec) {detail::copy(from, to, &ec);} inline void copy_directory(const path& from, const path& to) {detail::copy_directory(from, to);} inline void copy_directory(const path& from, const path& to, system::error_code& ec) {detail::copy_directory(from, to, &ec);} inline void copy_file(const path& from, const path& to, // See ticket #2925 BOOST_SCOPED_ENUM(copy_option) option) {detail::copy_file(from, to, option);} inline void copy_file(const path& from, const path& to) {detail::copy_file(from, to, copy_option::fail_if_exists);} inline void copy_file(const path& from, const path& to, // See ticket #2925 BOOST_SCOPED_ENUM(copy_option) option, system::error_code& ec) {detail::copy_file(from, to, option, &ec);} inline void copy_file(const path& from, const path& to, system::error_code& ec) {detail::copy_file(from, to, copy_option::fail_if_exists, &ec);} inline void copy_symlink(const path& existing_symlink, const path& new_symlink) {detail::copy_symlink(existing_symlink, new_symlink);} inline void copy_symlink(const path& existing_symlink, const path& new_symlink, system::error_code& ec) {detail::copy_symlink(existing_symlink, new_symlink, &ec);} inline bool create_directories(const path& p) {return detail::create_directories(p);} inline bool create_directories(const path& p, system::error_code& ec) {return detail::create_directories(p, &ec);} inline bool create_directory(const path& p) {return detail::create_directory(p);} inline bool create_directory(const path& p, system::error_code& ec) {return detail::create_directory(p, &ec);} inline void create_directory_symlink(const path& to, const path& from) {detail::create_directory_symlink(to, from);} inline void create_directory_symlink(const path& to, const path& from, system::error_code& ec) {detail::create_directory_symlink(to, from, &ec);} inline void create_hard_link(const path& to, const path& new_hard_link) {detail::create_hard_link(to, new_hard_link);} inline void create_hard_link(const path& to, const path& new_hard_link, system::error_code& ec) {detail::create_hard_link(to, new_hard_link, &ec);} inline void create_symlink(const path& to, const path& new_symlink) {detail::create_symlink(to, new_symlink);} inline void create_symlink(const path& to, const path& new_symlink, system::error_code& ec) {detail::create_symlink(to, new_symlink, &ec);} inline path current_path() {return detail::current_path();} inline path current_path(system::error_code& ec) {return detail::current_path(&ec);} inline void current_path(const path& p) {detail::current_path(p);} inline void current_path(const path& p, system::error_code& ec) {detail::current_path(p, &ec);} inline bool equivalent(const path& p1, const path& p2) {return detail::equivalent(p1, p2);} inline bool equivalent(const path& p1, const path& p2, system::error_code& ec) {return detail::equivalent(p1, p2, &ec);} inline boost::uintmax_t file_size(const path& p) {return detail::file_size(p);} inline boost::uintmax_t file_size(const path& p, system::error_code& ec) {return detail::file_size(p, &ec);} inline boost::uintmax_t hard_link_count(const path& p) {return detail::hard_link_count(p);} inline boost::uintmax_t hard_link_count(const path& p, system::error_code& ec) {return detail::hard_link_count(p, &ec);} inline path initial_path() {return detail::initial_path();} inline path initial_path(system::error_code& ec) {return detail::initial_path(&ec);} template <class Path> path initial_path() {return initial_path();} template <class Path> path initial_path(system::error_code& ec) {return detail::initial_path(&ec);} inline std::time_t last_write_time(const path& p) {return detail::last_write_time(p);} inline std::time_t last_write_time(const path& p, system::error_code& ec) {return detail::last_write_time(p, &ec);} inline void last_write_time(const path& p, const std::time_t new_time) {detail::last_write_time(p, new_time);} inline void last_write_time(const path& p, const std::time_t new_time, system::error_code& ec) {detail::last_write_time(p, new_time, &ec);} inline path read_symlink(const path& p) {return detail::read_symlink(p);} inline path read_symlink(const path& p, system::error_code& ec) {return detail::read_symlink(p, &ec);} inline // For standardization, if the committee doesn't like "remove", consider "eliminate" bool remove(const path& p) {return detail::remove(p);} inline bool remove(const path& p, system::error_code& ec) {return detail::remove(p, &ec);} inline boost::uintmax_t remove_all(const path& p) {return detail::remove_all(p);} inline boost::uintmax_t remove_all(const path& p, system::error_code& ec) {return detail::remove_all(p, &ec);} inline void rename(const path& old_p, const path& new_p) {detail::rename(old_p, new_p);} inline void rename(const path& old_p, const path& new_p, system::error_code& ec) {detail::rename(old_p, new_p, &ec);} inline // name suggested by Scott McMurray void resize_file(const path& p, uintmax_t size) {detail::resize_file(p, size);} inline void resize_file(const path& p, uintmax_t size, system::error_code& ec) {detail::resize_file(p, size, &ec);} inline space_info space(const path& p) {return detail::space(p);} inline space_info space(const path& p, system::error_code& ec) {return detail::space(p, &ec);} # ifndef BOOST_FILESYSTEM_NO_DEPRECATED inline bool symbolic_link_exists(const path& p) { return is_symlink(symlink_status(p)); } # endif inline path system_complete(const path& p) {return detail::system_complete(p);} inline path system_complete(const path& p, system::error_code& ec) {return detail::system_complete(p, &ec);} inline path temp_directory_path() {return detail::temp_directory_path();} inline path temp_directory_path(system::error_code& ec) {return detail::temp_directory_path(&ec);} inline path unique_path(const path& p="%%%%-%%%%-%%%%-%%%%") { return detail::unique_path(p); } inline path unique_path(const path& p, system::error_code& ec) { return detail::unique_path(p, &ec); } //--------------------------------------------------------------------------------------// // // // directory_entry // // // //--------------------------------------------------------------------------------------// // GCC has a problem with a member function named path within a namespace or // sub-namespace that also has a class named path. The workaround is to always // fully qualify the name path when it refers to the class name. class BOOST_FILESYSTEM_DECL directory_entry { public: // compiler generated copy constructor, copy assignment, and destructor apply directory_entry() {} explicit directory_entry(const boost::filesystem::path& p, file_status st = file_status(), file_status symlink_st=file_status()) : m_path(p), m_status(st), m_symlink_status(symlink_st) {} void assign(const boost::filesystem::path& p, file_status st = file_status(), file_status symlink_st = file_status()) { m_path = p; m_status = st; m_symlink_status = symlink_st; } void replace_filename(const boost::filesystem::path& p, file_status st = file_status(), file_status symlink_st = file_status()) { m_path.remove_filename(); m_path /= p; m_status = st; m_symlink_status = symlink_st; } # ifndef BOOST_FILESYSTEM_NO_DEPRECATED void replace_leaf(const boost::filesystem::path& p, file_status st, file_status symlink_st) { replace_filename(p, st, symlink_st); } # endif const boost::filesystem::path& path() const {return m_path;} file_status status() const {return m_get_status();} file_status status(system::error_code& ec) const {return m_get_status(&ec);} file_status symlink_status() const {return m_get_symlink_status();} file_status symlink_status(system::error_code& ec) const {return m_get_symlink_status(&ec);} bool operator==(const directory_entry& rhs) {return m_path == rhs.m_path;} bool operator!=(const directory_entry& rhs) {return m_path != rhs.m_path;} bool operator< (const directory_entry& rhs) {return m_path < rhs.m_path;} bool operator<=(const directory_entry& rhs) {return m_path <= rhs.m_path;} bool operator> (const directory_entry& rhs) {return m_path > rhs.m_path;} bool operator>=(const directory_entry& rhs) {return m_path >= rhs.m_path;} private: boost::filesystem::path m_path; mutable file_status m_status; // stat()-like mutable file_status m_symlink_status; // lstat()-like file_status m_get_status(system::error_code* ec=0) const; file_status m_get_symlink_status(system::error_code* ec=0) const; }; // directory_entry //--------------------------------------------------------------------------------------// // // // directory_iterator helpers // // // //--------------------------------------------------------------------------------------// class directory_iterator; namespace detail { BOOST_FILESYSTEM_DECL system::error_code dir_itr_close(// never throws() void *& handle # if defined(BOOST_POSIX_API) , void *& buffer # endif ); struct dir_itr_imp { directory_entry dir_entry; void* handle; # ifdef BOOST_POSIX_API void* buffer; // see dir_itr_increment implementation # endif dir_itr_imp() : handle(0) # ifdef BOOST_POSIX_API , buffer(0) # endif {} ~dir_itr_imp() // never throws { dir_itr_close(handle # if defined(BOOST_POSIX_API) , buffer # endif ); } }; // see path::iterator: comment below BOOST_FILESYSTEM_DECL void directory_iterator_construct(directory_iterator& it, const path& p, system::error_code* ec); BOOST_FILESYSTEM_DECL void directory_iterator_increment(directory_iterator& it, system::error_code* ec); } // namespace detail //--------------------------------------------------------------------------------------// // // // directory_iterator // // // //--------------------------------------------------------------------------------------// class directory_iterator : public boost::iterator_facade< directory_iterator, directory_entry, boost::single_pass_traversal_tag > { public: directory_iterator(){} // creates the "end" iterator // iterator_facade derived classes don't seem to like implementations in // separate translation unit dll's, so forward to detail functions explicit directory_iterator(const path& p) : m_imp(new detail::dir_itr_imp) { detail::directory_iterator_construct(*this, p, 0); } directory_iterator(const path& p, system::error_code& ec) : m_imp(new detail::dir_itr_imp) { detail::directory_iterator_construct(*this, p, &ec); } ~directory_iterator() {} // never throws directory_iterator& increment(system::error_code& ec) { detail::directory_iterator_increment(*this, &ec); return *this; } private: friend struct detail::dir_itr_imp; friend BOOST_FILESYSTEM_DECL void detail::directory_iterator_construct(directory_iterator& it, const path& p, system::error_code* ec); friend BOOST_FILESYSTEM_DECL void detail::directory_iterator_increment(directory_iterator& it, system::error_code* ec); // shared_ptr provides shallow-copy semantics required for InputIterators. // m_imp.get()==0 indicates the end iterator. boost::shared_ptr< detail::dir_itr_imp > m_imp; friend class boost::iterator_core_access; boost::iterator_facade< directory_iterator, directory_entry, boost::single_pass_traversal_tag >::reference dereference() const { BOOST_ASSERT(m_imp.get() && "attempt to dereference end iterator"); return m_imp->dir_entry; } void increment() { detail::directory_iterator_increment(*this, 0); } bool equal(const directory_iterator& rhs) const { return m_imp == rhs.m_imp; } }; //--------------------------------------------------------------------------------------// // // // recursive_directory_iterator helpers // // // //--------------------------------------------------------------------------------------// BOOST_SCOPED_ENUM_START(symlink_option) { none, no_recurse = none, // don't follow directory symlinks (default behavior) recurse, // follow directory symlinks _detail_no_push = recurse << 1 // internal use only }; BOOST_SCOPED_ENUM_END BOOST_BITMASK(BOOST_SCOPED_ENUM(symlink_option)) namespace detail { struct recur_dir_itr_imp { typedef directory_iterator element_type; std::stack< element_type, std::vector< element_type > > m_stack; int m_level; BOOST_SCOPED_ENUM(symlink_option) m_options; recur_dir_itr_imp() : m_level(0), m_options(symlink_option::none) {} void increment(system::error_code* ec); // ec == 0 means throw on error void pop(); }; // Implementation is inline to avoid dynamic linking difficulties with m_stack: // Microsoft warning C4251, m_stack needs to have dll-interface to be used by // clients of struct 'boost::filesystem::detail::recur_dir_itr_imp' inline void recur_dir_itr_imp::increment(system::error_code* ec) // ec == 0 means throw on error { if ((m_options & symlink_option::_detail_no_push) == symlink_option::_detail_no_push) m_options &= ~symlink_option::_detail_no_push; else if (is_directory(m_stack.top()->status()) && (!is_symlink(m_stack.top()->symlink_status()) || (m_options & symlink_option::recurse) == symlink_option::recurse)) { if (ec == 0) m_stack.push(directory_iterator(m_stack.top()->path())); else { m_stack.push(directory_iterator(m_stack.top()->path(), *ec)); if (*ec) return; } if (m_stack.top() != directory_iterator()) { ++m_level; return; } m_stack.pop(); } while (!m_stack.empty() && ++m_stack.top() == directory_iterator()) { m_stack.pop(); --m_level; } } inline void recur_dir_itr_imp::pop() { BOOST_ASSERT(m_level > 0 && "pop() on recursive_directory_iterator with level < 1"); do { m_stack.pop(); --m_level; } while (!m_stack.empty() && ++m_stack.top() == directory_iterator()); } } // namespace detail //--------------------------------------------------------------------------------------// // // // recursive_directory_iterator // // // //--------------------------------------------------------------------------------------// class recursive_directory_iterator : public boost::iterator_facade< recursive_directory_iterator, directory_entry, boost::single_pass_traversal_tag > { public: recursive_directory_iterator(){} // creates the "end" iterator explicit recursive_directory_iterator(const path& dir_path, BOOST_SCOPED_ENUM(symlink_option) opt = symlink_option::none) : m_imp(new detail::recur_dir_itr_imp) { m_imp->m_options = opt; m_imp->m_stack.push(directory_iterator(dir_path)); if (m_imp->m_stack.top() == directory_iterator()) { m_imp.reset (); } } recursive_directory_iterator(const path& dir_path, BOOST_SCOPED_ENUM(symlink_option) opt, system::error_code & ec) : m_imp(new detail::recur_dir_itr_imp) { m_imp->m_options = opt; m_imp->m_stack.push(directory_iterator(dir_path, ec)); if (m_imp->m_stack.top() == directory_iterator()) { m_imp.reset (); } } recursive_directory_iterator(const path& dir_path, system::error_code & ec) : m_imp(new detail::recur_dir_itr_imp) { m_imp->m_options = symlink_option::none; m_imp->m_stack.push(directory_iterator(dir_path, ec)); if (m_imp->m_stack.top() == directory_iterator()) { m_imp.reset (); } } recursive_directory_iterator& increment(system::error_code& ec) { BOOST_ASSERT(m_imp.get() && "increment() on end recursive_directory_iterator"); m_imp->increment(&ec); return *this; } int level() const { BOOST_ASSERT(m_imp.get() && "level() on end recursive_directory_iterator"); return m_imp->m_level; } bool no_push_pending() const { BOOST_ASSERT(m_imp.get() && "is_no_push_requested() on end recursive_directory_iterator"); return (m_imp->m_options & symlink_option::_detail_no_push) == symlink_option::_detail_no_push; } # ifndef BOOST_FILESYSTEM_NO_DEPRECATED bool no_push_request() const { return no_push_pending(); } # endif void pop() { BOOST_ASSERT(m_imp.get() && "pop() on end recursive_directory_iterator"); m_imp->pop(); if (m_imp->m_stack.empty()) m_imp.reset(); // done, so make end iterator } void no_push(bool value=true) { BOOST_ASSERT(m_imp.get() && "no_push() on end recursive_directory_iterator"); if (value) m_imp->m_options |= symlink_option::_detail_no_push; else m_imp->m_options &= ~symlink_option::_detail_no_push; } file_status status() const { BOOST_ASSERT(m_imp.get() && "status() on end recursive_directory_iterator"); return m_imp->m_stack.top()->status(); } file_status symlink_status() const { BOOST_ASSERT(m_imp.get() && "symlink_status() on end recursive_directory_iterator"); return m_imp->m_stack.top()->symlink_status(); } private: // shared_ptr provides shallow-copy semantics required for InputIterators. // m_imp.get()==0 indicates the end iterator. boost::shared_ptr< detail::recur_dir_itr_imp > m_imp; friend class boost::iterator_core_access; boost::iterator_facade< recursive_directory_iterator, directory_entry, boost::single_pass_traversal_tag >::reference dereference() const { BOOST_ASSERT(m_imp.get() && "dereference of end recursive_directory_iterator"); return *m_imp->m_stack.top(); } void increment() { BOOST_ASSERT(m_imp.get() && "increment of end recursive_directory_iterator"); m_imp->increment(0); if (m_imp->m_stack.empty()) m_imp.reset(); // done, so make end iterator } bool equal(const recursive_directory_iterator& rhs) const { return m_imp == rhs.m_imp; } }; # if !defined(BOOST_FILESYSTEM_NO_DEPRECATED) typedef recursive_directory_iterator wrecursive_directory_iterator; # endif //--------------------------------------------------------------------------------------// // // // class filesystem_error // // // //--------------------------------------------------------------------------------------// class BOOST_SYMBOL_VISIBLE filesystem_error : public system::system_error { // see http://www.boost.org/more/error_handling.html for design rationale // all functions are inline to avoid issues with crossing dll boundaries public: // compiler generates copy constructor and copy assignment filesystem_error( const std::string & what_arg, system::error_code ec) : system::system_error(ec, what_arg) { try { m_imp_ptr.reset(new m_imp); } catch (...) { m_imp_ptr.reset(); } } filesystem_error( const std::string & what_arg, const path& path1_arg, system::error_code ec) : system::system_error(ec, what_arg) { try { m_imp_ptr.reset(new m_imp); m_imp_ptr->m_path1 = path1_arg; } catch (...) { m_imp_ptr.reset(); } } filesystem_error( const std::string & what_arg, const path& path1_arg, const path& path2_arg, system::error_code ec) : system::system_error(ec, what_arg) { try { m_imp_ptr.reset(new m_imp); m_imp_ptr->m_path1 = path1_arg; m_imp_ptr->m_path2 = path2_arg; } catch (...) { m_imp_ptr.reset(); } } ~filesystem_error() throw() {} const path& path1() const { static const path empty_path; return m_imp_ptr.get() ? m_imp_ptr->m_path1 : empty_path ; } const path& path2() const { static const path empty_path; return m_imp_ptr.get() ? m_imp_ptr->m_path2 : empty_path ; } const char* what() const throw() { if (!m_imp_ptr.get()) return system::system_error::what(); try { if (m_imp_ptr->m_what.empty()) { m_imp_ptr->m_what = system::system_error::what(); if (!m_imp_ptr->m_path1.empty()) { m_imp_ptr->m_what += ": \""; m_imp_ptr->m_what += m_imp_ptr->m_path1.string(); m_imp_ptr->m_what += "\""; } if (!m_imp_ptr->m_path2.empty()) { m_imp_ptr->m_what += ", \""; m_imp_ptr->m_what += m_imp_ptr->m_path2.string(); m_imp_ptr->m_what += "\""; } } return m_imp_ptr->m_what.c_str(); } catch (...) { return system::system_error::what(); } } private: struct m_imp { path m_path1; // may be empty() path m_path2; // may be empty() std::string m_what; // not built until needed }; boost::shared_ptr<m_imp> m_imp_ptr; }; // test helper -----------------------------------------------------------------------// // Not part of the documented interface since false positives are possible; // there is no law that says that an OS that has large stat.st_size // actually supports large file sizes. namespace detail { BOOST_FILESYSTEM_DECL bool possible_large_file_size_support(); } } // namespace filesystem3 } // namespace boost //----------------------------------------------------------------------------// namespace boost { namespace filesystem { using filesystem3::absolute; using filesystem3::block_file; using filesystem3::character_file; // using filesystem3::copy; using filesystem3::copy_file; using filesystem3::copy_option; using filesystem3::copy_symlink; using filesystem3::create_directories; using filesystem3::create_directory; using filesystem3::create_hard_link; using filesystem3::create_symlink; using filesystem3::create_directory_symlink; using filesystem3::current_path; using filesystem3::directory_entry; using filesystem3::directory_file; using filesystem3::directory_iterator; using filesystem3::equivalent; using filesystem3::exists; using filesystem3::fifo_file; using filesystem3::file_not_found; using filesystem3::file_size; using filesystem3::file_status; using filesystem3::file_type; using filesystem3::filesystem_error; using filesystem3::hard_link_count; using filesystem3::initial_path; using filesystem3::is_directory; using filesystem3::is_directory; using filesystem3::is_empty; using filesystem3::is_other; using filesystem3::is_regular_file; using filesystem3::is_symlink; using filesystem3::last_write_time; using filesystem3::read_symlink; using filesystem3::recursive_directory_iterator; using filesystem3::regular_file; using filesystem3::reparse_file; using filesystem3::remove; using filesystem3::remove_all; using filesystem3::rename; using filesystem3::resize_file; using filesystem3::socket_file; using filesystem3::space; using filesystem3::space_info; using filesystem3::status; using filesystem3::status_error; using filesystem3::status_known; using filesystem3::symlink_file; using filesystem3::symlink_option; using filesystem3::symlink_status; using filesystem3::system_complete; using filesystem3::temp_directory_path; using filesystem3::type_unknown; using filesystem3::unique_path; # ifndef BOOST_FILESYSTEM_NO_DEPRECATED using filesystem3::is_regular; using filesystem3::status_unknown; using filesystem3::symbolic_link_exists; //using filesystem3::wdirectory_iterator; //using filesystem3::wdirectory_entry; # endif namespace detail { using filesystem3::detail::possible_large_file_size_support; } } } #include <boost/config/abi_suffix.hpp> // pops abi_prefix.hpp pragmas #endif // BOOST_FILESYSTEM3_OPERATIONS_HPP