boost/filesystem/path.hpp
// filesystem path.hpp ---------------------------------------------------------------// // Copyright Beman Dawes 2002-2005, 2009 // 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 // path::stem(), extension(), and replace_extension() are based on // basename(), extension(), and change_extension() from the original // filesystem/convenience.hpp header by Vladimir Prus. #ifndef BOOST_FILESYSTEM_PATH_HPP #define BOOST_FILESYSTEM_PATH_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/assert.hpp> #include <boost/filesystem/config.hpp> #include <boost/filesystem/path_traits.hpp> // includes <cwchar> #include <boost/system/error_code.hpp> #include <boost/system/system_error.hpp> #include <boost/iterator/iterator_facade.hpp> #include <boost/core/enable_if.hpp> #include <boost/io/detail/quoted_manip.hpp> #include <boost/functional/hash_fwd.hpp> #include <boost/type_traits/is_integral.hpp> #include <string> #include <iterator> #include <cstring> #include <iosfwd> #include <stdexcept> #include <cassert> #include <locale> #include <algorithm> #include <boost/config/abi_prefix.hpp> // must be the last #include namespace boost { namespace filesystem { namespace path_detail // intentionally don't use filesystem::detail to not bring internal Boost.Filesystem functions into ADL via path_constants { template< typename Char, Char Separator, Char PreferredSeparator, Char Dot > struct path_constants { typedef path_constants< Char, Separator, PreferredSeparator, Dot > path_constants_base; typedef Char value_type; static BOOST_CONSTEXPR_OR_CONST value_type separator = Separator; static BOOST_CONSTEXPR_OR_CONST value_type preferred_separator = PreferredSeparator; static BOOST_CONSTEXPR_OR_CONST value_type dot = Dot; }; template< typename Char, Char Separator, Char PreferredSeparator, Char Dot > BOOST_CONSTEXPR_OR_CONST typename path_constants< Char, Separator, PreferredSeparator, Dot >::value_type path_constants< Char, Separator, PreferredSeparator, Dot >::separator; template< typename Char, Char Separator, Char PreferredSeparator, Char Dot > BOOST_CONSTEXPR_OR_CONST typename path_constants< Char, Separator, PreferredSeparator, Dot >::value_type path_constants< Char, Separator, PreferredSeparator, Dot >::preferred_separator; template< typename Char, Char Separator, Char PreferredSeparator, Char Dot > BOOST_CONSTEXPR_OR_CONST typename path_constants< Char, Separator, PreferredSeparator, Dot >::value_type path_constants< Char, Separator, PreferredSeparator, Dot >::dot; } // namespace path_detail //------------------------------------------------------------------------------------// // // // class path // // // //------------------------------------------------------------------------------------// class path : public filesystem::path_detail::path_constants< #ifdef BOOST_WINDOWS_API wchar_t, L'/', L'\\', L'.' #else char, '/', '/', '.' #endif > { public: // value_type is the character type used by the operating system API to // represent paths. typedef path_constants_base::value_type value_type; typedef std::basic_string<value_type> string_type; typedef std::codecvt<wchar_t, char, std::mbstate_t> codecvt_type; // ----- character encoding conversions ----- // Following the principle of least astonishment, path input arguments // passed to or obtained from the operating system via objects of // class path behave as if they were directly passed to or // obtained from the O/S API, unless conversion is explicitly requested. // // POSIX specfies that path strings are passed unchanged to and from the // API. Note that this is different from the POSIX command line utilities, // which convert according to a locale. // // Thus for POSIX, char strings do not undergo conversion. wchar_t strings // are converted to/from char using the path locale or, if a conversion // argument is given, using a conversion object modeled on // std::wstring_convert. // // The path locale, which is global to the thread, can be changed by the // imbue() function. It is initialized to an implementation defined locale. // // For Windows, wchar_t strings do not undergo conversion. char strings // are converted using the "ANSI" or "OEM" code pages, as determined by // the AreFileApisANSI() function, or, if a conversion argument is given, // using a conversion object modeled on std::wstring_convert. // // See m_pathname comments for further important rationale. // TODO: rules needed for operating systems that use / or . // differently, or format directory paths differently from file paths. // // ********************************************************************************** // // More work needed: How to handle an operating system that may have // slash characters or dot characters in valid filenames, either because // it doesn't follow the POSIX standard, or because it allows MBCS // filename encodings that may contain slash or dot characters. For // example, ISO/IEC 2022 (JIS) encoding which allows switching to // JIS x0208-1983 encoding. A valid filename in this set of encodings is // 0x1B 0x24 0x42 [switch to X0208-1983] 0x24 0x2F [U+304F Kiragana letter KU] // ^^^^ // Note that 0x2F is the ASCII slash character // // ********************************************************************************** // Supported source arguments: half-open iterator range, container, c-array, // and single pointer to null terminated string. // All source arguments except pointers to null terminated byte strings support // multi-byte character strings which may have embedded nulls. Embedded null // support is required for some Asian languages on Windows. // "const codecvt_type& cvt=codecvt()" default arguments are not used because this // limits the impact of locale("") initialization failures on POSIX systems to programs // that actually depend on locale(""). It further ensures that exceptions thrown // as a result of such failues occur after main() has started, so can be caught. // ----- constructors ----- path() BOOST_NOEXCEPT {} path(const path& p) : m_pathname(p.m_pathname) {} template <class Source> path(Source const& source, typename boost::enable_if<path_traits::is_pathable< typename boost::decay<Source>::type> >::type* =0) { path_traits::dispatch(source, m_pathname); } path(const value_type* s) : m_pathname(s) {} path(value_type* s) : m_pathname(s) {} path(const string_type& s) : m_pathname(s) {} path(string_type& s) : m_pathname(s) {} // As of October 2015 the interaction between noexcept and =default is so troublesome // for VC++, GCC, and probably other compilers, that =default is not used with noexcept // functions. GCC is not even consistent for the same release on different platforms. # if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) path(path&& p) BOOST_NOEXCEPT : m_pathname(std::move(p.m_pathname)) {} path& operator=(path&& p) BOOST_NOEXCEPT { m_pathname = std::move(p.m_pathname); return *this; } # endif template <class Source> path(Source const& source, const codecvt_type& cvt) { path_traits::dispatch(source, m_pathname, cvt); } template <class InputIterator> path(InputIterator begin, InputIterator end) { if (begin != end) { // convert requires contiguous string, so copy std::basic_string<typename std::iterator_traits<InputIterator>::value_type> seq(begin, end); path_traits::convert(seq.c_str(), seq.c_str()+seq.size(), m_pathname); } } template <class InputIterator> path(InputIterator begin, InputIterator end, const codecvt_type& cvt) { if (begin != end) { // convert requires contiguous string, so copy std::basic_string<typename std::iterator_traits<InputIterator>::value_type> seq(begin, end); path_traits::convert(seq.c_str(), seq.c_str()+seq.size(), m_pathname, cvt); } } // ----- assignments ----- path& operator=(const path& p) { m_pathname = p.m_pathname; return *this; } template <class Source> typename boost::enable_if<path_traits::is_pathable< typename boost::decay<Source>::type>, path&>::type operator=(Source const& source) { m_pathname.clear(); path_traits::dispatch(source, m_pathname); return *this; } // value_type overloads path& operator=(const value_type* ptr) // required in case ptr overlaps *this {m_pathname = ptr; return *this;} path& operator=(value_type* ptr) // required in case ptr overlaps *this {m_pathname = ptr; return *this;} path& operator=(const string_type& s) {m_pathname = s; return *this;} path& operator=(string_type& s) {m_pathname = s; return *this;} path& assign(const value_type* ptr, const codecvt_type&) // required in case ptr overlaps *this {m_pathname = ptr; return *this;} template <class Source> path& assign(Source const& source, const codecvt_type& cvt) { m_pathname.clear(); path_traits::dispatch(source, m_pathname, cvt); return *this; } template <class InputIterator> path& assign(InputIterator begin, InputIterator end) { m_pathname.clear(); if (begin != end) { std::basic_string<typename std::iterator_traits<InputIterator>::value_type> seq(begin, end); path_traits::convert(seq.c_str(), seq.c_str()+seq.size(), m_pathname); } return *this; } template <class InputIterator> path& assign(InputIterator begin, InputIterator end, const codecvt_type& cvt) { m_pathname.clear(); if (begin != end) { std::basic_string<typename std::iterator_traits<InputIterator>::value_type> seq(begin, end); path_traits::convert(seq.c_str(), seq.c_str()+seq.size(), m_pathname, cvt); } return *this; } // ----- concatenation ----- template <class Source> typename boost::enable_if<path_traits::is_pathable< typename boost::decay<Source>::type>, path&>::type operator+=(Source const& source) { return concat(source); } // value_type overloads. Same rationale as for constructors above path& operator+=(const path& p) { m_pathname += p.m_pathname; return *this; } path& operator+=(const value_type* ptr) { m_pathname += ptr; return *this; } path& operator+=(value_type* ptr) { m_pathname += ptr; return *this; } path& operator+=(const string_type& s) { m_pathname += s; return *this; } path& operator+=(string_type& s) { m_pathname += s; return *this; } path& operator+=(value_type c) { m_pathname += c; return *this; } template <class CharT> typename boost::enable_if<boost::is_integral<CharT>, path&>::type operator+=(CharT c) { CharT tmp[2]; tmp[0] = c; tmp[1] = 0; return concat(tmp); } template <class Source> path& concat(Source const& source) { path_traits::dispatch(source, m_pathname); return *this; } template <class Source> path& concat(Source const& source, const codecvt_type& cvt) { path_traits::dispatch(source, m_pathname, cvt); return *this; } template <class InputIterator> path& concat(InputIterator begin, InputIterator end) { if (begin == end) return *this; std::basic_string<typename std::iterator_traits<InputIterator>::value_type> seq(begin, end); path_traits::convert(seq.c_str(), seq.c_str()+seq.size(), m_pathname); return *this; } template <class InputIterator> path& concat(InputIterator begin, InputIterator end, const codecvt_type& cvt) { if (begin == end) return *this; std::basic_string<typename std::iterator_traits<InputIterator>::value_type> seq(begin, end); path_traits::convert(seq.c_str(), seq.c_str()+seq.size(), m_pathname, cvt); return *this; } // ----- appends ----- // if a separator is added, it is the preferred separator for the platform; // slash for POSIX, backslash for Windows BOOST_FILESYSTEM_DECL path& operator/=(const path& p); template <class Source> typename boost::enable_if<path_traits::is_pathable< typename boost::decay<Source>::type>, path&>::type operator/=(Source const& source) { return append(source); } BOOST_FILESYSTEM_DECL path& operator/=(const value_type* ptr); path& operator/=(value_type* ptr) { return this->operator/=(const_cast<const value_type*>(ptr)); } path& operator/=(const string_type& s) { return this->operator/=(path(s)); } path& operator/=(string_type& s) { return this->operator/=(path(s)); } path& append(const value_type* ptr) // required in case ptr overlaps *this { this->operator/=(ptr); return *this; } path& append(const value_type* ptr, const codecvt_type&) // required in case ptr overlaps *this { this->operator/=(ptr); return *this; } template <class Source> path& append(Source const& source); template <class Source> path& append(Source const& source, const codecvt_type& cvt); template <class InputIterator> path& append(InputIterator begin, InputIterator end); template <class InputIterator> path& append(InputIterator begin, InputIterator end, const codecvt_type& cvt); // ----- modifiers ----- void clear() BOOST_NOEXCEPT { m_pathname.clear(); } # ifdef BOOST_POSIX_API path& make_preferred() { return *this; } // POSIX no effect # else // BOOST_WINDOWS_API BOOST_FILESYSTEM_DECL path& make_preferred(); // change slashes to backslashes # endif BOOST_FILESYSTEM_DECL path& remove_filename(); BOOST_FILESYSTEM_DECL path& remove_trailing_separator(); BOOST_FILESYSTEM_DECL path& replace_extension(const path& new_extension = path()); void swap(path& rhs) BOOST_NOEXCEPT { m_pathname.swap(rhs.m_pathname); } // ----- observers ----- // For operating systems that format file paths differently than directory // paths, return values from observers are formatted as file names unless there // is a trailing separator, in which case returns are formatted as directory // paths. POSIX and Windows make no such distinction. // Implementations are permitted to return const values or const references. // The string or path returned by an observer are specified as being formatted // as "native" or "generic". // // For POSIX, these are all the same format; slashes and backslashes are as input and // are not modified. // // For Windows, native: as input; slashes and backslashes are not modified; // this is the format of the internally stored string. // generic: backslashes are converted to slashes // ----- native format observers ----- const string_type& native() const BOOST_NOEXCEPT { return m_pathname; } const value_type* c_str() const BOOST_NOEXCEPT { return m_pathname.c_str(); } string_type::size_type size() const BOOST_NOEXCEPT { return m_pathname.size(); } template <class String> String string() const; template <class String> String string(const codecvt_type& cvt) const; # ifdef BOOST_WINDOWS_API const std::string string() const { std::string tmp; if (!m_pathname.empty()) path_traits::convert(m_pathname.c_str(), m_pathname.c_str()+m_pathname.size(), tmp); return tmp; } const std::string string(const codecvt_type& cvt) const { std::string tmp; if (!m_pathname.empty()) path_traits::convert(m_pathname.c_str(), m_pathname.c_str()+m_pathname.size(), tmp, cvt); return tmp; } // string_type is std::wstring, so there is no conversion const std::wstring& wstring() const { return m_pathname; } const std::wstring& wstring(const codecvt_type&) const { return m_pathname; } # else // BOOST_POSIX_API // string_type is std::string, so there is no conversion const std::string& string() const { return m_pathname; } const std::string& string(const codecvt_type&) const { return m_pathname; } const std::wstring wstring() const { std::wstring tmp; if (!m_pathname.empty()) path_traits::convert(m_pathname.c_str(), m_pathname.c_str()+m_pathname.size(), tmp); return tmp; } const std::wstring wstring(const codecvt_type& cvt) const { std::wstring tmp; if (!m_pathname.empty()) path_traits::convert(m_pathname.c_str(), m_pathname.c_str()+m_pathname.size(), tmp, cvt); return tmp; } # endif // ----- generic format observers ----- // Experimental generic function returning generic formatted path (i.e. separators // are forward slashes). Motivation: simpler than a family of generic_*string // functions. # ifdef BOOST_WINDOWS_API BOOST_FILESYSTEM_DECL path generic_path() const; # else path generic_path() const { return path(*this); } # endif template <class String> String generic_string() const; template <class String> String generic_string(const codecvt_type& cvt) const; # ifdef BOOST_WINDOWS_API const std::string generic_string() const { return generic_path().string(); } const std::string generic_string(const codecvt_type& cvt) const { return generic_path().string(cvt); } const std::wstring generic_wstring() const { return generic_path().wstring(); } const std::wstring generic_wstring(const codecvt_type&) const { return generic_wstring(); } # else // BOOST_POSIX_API // On POSIX-like systems, the generic format is the same as the native format const std::string& generic_string() const { return m_pathname; } const std::string& generic_string(const codecvt_type&) const { return m_pathname; } const std::wstring generic_wstring() const { return this->wstring(); } const std::wstring generic_wstring(const codecvt_type& cvt) const { return this->wstring(cvt); } # endif // ----- compare ----- BOOST_FILESYSTEM_DECL int compare(const path& p) const BOOST_NOEXCEPT; // generic, lexicographical int compare(const std::string& s) const { return compare(path(s)); } int compare(const value_type* s) const { return compare(path(s)); } // ----- decomposition ----- BOOST_FILESYSTEM_DECL path root_path() const; BOOST_FILESYSTEM_DECL path root_name() const; // returns 0 or 1 element path // even on POSIX, root_name() is non-empty() for network paths BOOST_FILESYSTEM_DECL path root_directory() const; // returns 0 or 1 element path BOOST_FILESYSTEM_DECL path relative_path() const; BOOST_FILESYSTEM_DECL path parent_path() const; BOOST_FILESYSTEM_DECL path filename() const; // returns 0 or 1 element path BOOST_FILESYSTEM_DECL path stem() const; // returns 0 or 1 element path BOOST_FILESYSTEM_DECL path extension() const; // returns 0 or 1 element path // ----- query ----- bool empty() const BOOST_NOEXCEPT { return m_pathname.empty(); } bool filename_is_dot() const; bool filename_is_dot_dot() const; bool has_root_path() const { return has_root_directory() || has_root_name(); } bool has_root_name() const { return !root_name().empty(); } bool has_root_directory() const { return !root_directory().empty(); } bool has_relative_path() const { return !relative_path().empty(); } bool has_parent_path() const { return !parent_path().empty(); } bool has_filename() const { return !m_pathname.empty(); } bool has_stem() const { return !stem().empty(); } bool has_extension() const { return !extension().empty(); } bool is_relative() const { return !is_absolute(); } bool is_absolute() const { // Windows CE has no root name (aka drive letters) # if defined(BOOST_WINDOWS_API) && !defined(UNDER_CE) return has_root_name() && has_root_directory(); # else return has_root_directory(); # endif } // ----- lexical operations ----- BOOST_FILESYSTEM_DECL path lexically_normal() const; BOOST_FILESYSTEM_DECL path lexically_relative(const path& base) const; path lexically_proximate(const path& base) const { path tmp(lexically_relative(base)); return tmp.empty() ? *this : tmp; } // ----- iterators ----- class iterator; typedef iterator const_iterator; class reverse_iterator; typedef reverse_iterator const_reverse_iterator; BOOST_FILESYSTEM_DECL iterator begin() const; BOOST_FILESYSTEM_DECL iterator end() const; reverse_iterator rbegin() const; reverse_iterator rend() const; // ----- static member functions ----- static BOOST_FILESYSTEM_DECL std::locale imbue(const std::locale& loc); static BOOST_FILESYSTEM_DECL const codecvt_type& codecvt(); // ----- deprecated functions ----- # if defined(BOOST_FILESYSTEM_DEPRECATED) && defined(BOOST_FILESYSTEM_NO_DEPRECATED) # error both BOOST_FILESYSTEM_DEPRECATED and BOOST_FILESYSTEM_NO_DEPRECATED are defined # endif # if !defined(BOOST_FILESYSTEM_NO_DEPRECATED) // recently deprecated functions supplied by default path& normalize() { path tmp(lexically_normal()); m_pathname.swap(tmp.m_pathname); return *this; } path& remove_leaf() { return remove_filename(); } path leaf() const { return filename(); } path branch_path() const { return parent_path(); } path generic() const { return generic_path(); } bool has_leaf() const { return !m_pathname.empty(); } bool has_branch_path() const { return !parent_path().empty(); } bool is_complete() const { return is_absolute(); } # endif # if defined(BOOST_FILESYSTEM_DEPRECATED) // deprecated functions with enough signature or semantic changes that they are // not supplied by default const std::string file_string() const { return string(); } const std::string directory_string() const { return string(); } const std::string native_file_string() const { return string(); } const std::string native_directory_string() const { return string(); } const string_type external_file_string() const { return native(); } const string_type external_directory_string() const { return native(); } // older functions no longer supported //typedef bool (*name_check)(const std::string & name); //basic_path(const string_type& str, name_check) { operator/=(str); } //basic_path(const typename string_type::value_type* s, name_check) // { operator/=(s);} //static bool default_name_check_writable() { return false; } //static void default_name_check(name_check) {} //static name_check default_name_check() { return 0; } //basic_path& canonize(); # endif //--------------------------------------------------------------------------------------// // class path private members // //--------------------------------------------------------------------------------------// private: # if defined(_MSC_VER) # pragma warning(push) // Save warning settings # pragma warning(disable : 4251) // disable warning: class 'std::basic_string<_Elem,_Traits,_Ax>' # endif // needs to have dll-interface... /* m_pathname has the type, encoding, and format required by the native operating system. Thus for POSIX and Windows there is no conversion for passing m_pathname.c_str() to the O/S API or when obtaining a path from the O/S API. POSIX encoding is unspecified other than for dot and slash characters; POSIX just treats paths as a sequence of bytes. Windows encoding is UCS-2 or UTF-16 depending on the version. */ string_type m_pathname; // Windows: as input; backslashes NOT converted to slashes, // slashes NOT converted to backslashes # if defined(_MSC_VER) # pragma warning(pop) // restore warning settings. # endif // Returns: If separator is to be appended, m_pathname.size() before append. Otherwise 0. // Note: An append is never performed if size()==0, so a returned 0 is unambiguous. BOOST_FILESYSTEM_DECL string_type::size_type m_append_separator_if_needed(); BOOST_FILESYSTEM_DECL void m_erase_redundant_separator(string_type::size_type sep_pos); BOOST_FILESYSTEM_DECL string_type::size_type m_parent_path_end() const; // Was qualified; como433beta8 reports: // warning #427-D: qualified name is not allowed in member declaration friend class iterator; friend bool operator<(const path& lhs, const path& rhs); // see path::iterator::increment/decrement comment below static BOOST_FILESYSTEM_DECL void m_path_iterator_increment(path::iterator& it); static BOOST_FILESYSTEM_DECL void m_path_iterator_decrement(path::iterator& it); }; // class path namespace detail { BOOST_FILESYSTEM_DECL int lex_compare(path::iterator first1, path::iterator last1, path::iterator first2, path::iterator last2); BOOST_FILESYSTEM_DECL const path& dot_path(); BOOST_FILESYSTEM_DECL const path& dot_dot_path(); } # ifndef BOOST_FILESYSTEM_NO_DEPRECATED typedef path wpath; # endif //------------------------------------------------------------------------------------// // class path::iterator // //------------------------------------------------------------------------------------// class path::iterator : public boost::iterator_facade< path::iterator, path const, boost::bidirectional_traversal_tag > { private: friend class boost::iterator_core_access; friend class boost::filesystem::path; friend class boost::filesystem::path::reverse_iterator; friend void m_path_iterator_increment(path::iterator & it); friend void m_path_iterator_decrement(path::iterator & it); const path& dereference() const { return m_element; } bool equal(const iterator & rhs) const { return m_path_ptr == rhs.m_path_ptr && m_pos == rhs.m_pos; } // iterator_facade derived classes don't seem to like implementations in // separate translation unit dll's, so forward to class path static members void increment() { m_path_iterator_increment(*this); } void decrement() { m_path_iterator_decrement(*this); } path m_element; // current element const path* m_path_ptr; // path being iterated over string_type::size_type m_pos; // position of m_element in // m_path_ptr->m_pathname. // if m_element is implicit dot, m_pos is the // position of the last separator in the path. // end() iterator is indicated by // m_pos == m_path_ptr->m_pathname.size() }; // path::iterator //------------------------------------------------------------------------------------// // class path::reverse_iterator // //------------------------------------------------------------------------------------// class path::reverse_iterator : public boost::iterator_facade< path::reverse_iterator, path const, boost::bidirectional_traversal_tag > { public: explicit reverse_iterator(iterator itr) : m_itr(itr) { if (itr != itr.m_path_ptr->begin()) m_element = *--itr; } private: friend class boost::iterator_core_access; friend class boost::filesystem::path; const path& dereference() const { return m_element; } bool equal(const reverse_iterator& rhs) const { return m_itr == rhs.m_itr; } void increment() { --m_itr; if (m_itr != m_itr.m_path_ptr->begin()) { iterator tmp = m_itr; m_element = *--tmp; } } void decrement() { m_element = *m_itr; ++m_itr; } iterator m_itr; path m_element; }; // path::reverse_iterator //------------------------------------------------------------------------------------// // // // non-member functions // // // //------------------------------------------------------------------------------------// // std::lexicographical_compare would infinitely recurse because path iterators // yield paths, so provide a path aware version inline bool lexicographical_compare(path::iterator first1, path::iterator last1, path::iterator first2, path::iterator last2) { return detail::lex_compare(first1, last1, first2, last2) < 0; } inline bool operator==(const path& lhs, const path& rhs) {return lhs.compare(rhs) == 0;} inline bool operator==(const path& lhs, const path::string_type& rhs) {return lhs.compare(rhs) == 0;} inline bool operator==(const path::string_type& lhs, const path& rhs) {return rhs.compare(lhs) == 0;} inline bool operator==(const path& lhs, const path::value_type* rhs) {return lhs.compare(rhs) == 0;} inline bool operator==(const path::value_type* lhs, const path& rhs) {return rhs.compare(lhs) == 0;} inline bool operator!=(const path& lhs, const path& rhs) {return lhs.compare(rhs) != 0;} inline bool operator!=(const path& lhs, const path::string_type& rhs) {return lhs.compare(rhs) != 0;} inline bool operator!=(const path::string_type& lhs, const path& rhs) {return rhs.compare(lhs) != 0;} inline bool operator!=(const path& lhs, const path::value_type* rhs) {return lhs.compare(rhs) != 0;} inline bool operator!=(const path::value_type* lhs, const path& rhs) {return rhs.compare(lhs) != 0;} // TODO: why do == and != have additional overloads, but the others don't? inline bool operator<(const path& lhs, const path& rhs) {return lhs.compare(rhs) < 0;} inline bool operator<=(const path& lhs, const path& rhs) {return !(rhs < lhs);} inline bool operator> (const path& lhs, const path& rhs) {return rhs < lhs;} inline bool operator>=(const path& lhs, const path& rhs) {return !(lhs < rhs);} inline std::size_t hash_value(const path& x) BOOST_NOEXCEPT { # ifdef BOOST_WINDOWS_API std::size_t seed = 0; for(const path::value_type* it = x.c_str(); *it; ++it) hash_combine(seed, *it == L'/' ? L'\\' : *it); return seed; # else // BOOST_POSIX_API return hash_range(x.native().begin(), x.native().end()); # endif } inline void swap(path& lhs, path& rhs) BOOST_NOEXCEPT { lhs.swap(rhs); } inline path operator/(const path& lhs, const path& rhs) { path p = lhs; p /= rhs; return p; } # if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) inline path operator/(path&& lhs, const path& rhs) { lhs /= rhs; return std::move(lhs); } # endif // inserters and extractors // use boost::io::quoted() to handle spaces in paths // use '&' as escape character to ease use for Windows paths template <class Char, class Traits> inline std::basic_ostream<Char, Traits>& operator<<(std::basic_ostream<Char, Traits>& os, const path& p) { return os << boost::io::quoted(p.template string<std::basic_string<Char> >(), static_cast<Char>('&')); } template <class Char, class Traits> inline std::basic_istream<Char, Traits>& operator>>(std::basic_istream<Char, Traits>& is, path& p) { std::basic_string<Char> str; is >> boost::io::quoted(str, static_cast<Char>('&')); p = str; return is; } // name_checks // These functions are holdovers from version 1. It isn't clear they have much // usefulness, or how to generalize them for later versions. BOOST_FILESYSTEM_DECL bool portable_posix_name(const std::string & name); BOOST_FILESYSTEM_DECL bool windows_name(const std::string & name); BOOST_FILESYSTEM_DECL bool portable_name(const std::string & name); BOOST_FILESYSTEM_DECL bool portable_directory_name(const std::string & name); BOOST_FILESYSTEM_DECL bool portable_file_name(const std::string & name); BOOST_FILESYSTEM_DECL bool native(const std::string & name); namespace detail { // For POSIX, is_directory_separator() and is_element_separator() are identical since // a forward slash is the only valid directory separator and also the only valid // element separator. For Windows, forward slash and back slash are the possible // directory separators, but colon (example: "c:foo") is also an element separator. inline bool is_directory_separator(path::value_type c) BOOST_NOEXCEPT { return c == path::separator # ifdef BOOST_WINDOWS_API || c == path::preferred_separator # endif ; } inline bool is_element_separator(path::value_type c) BOOST_NOEXCEPT { return c == path::separator # ifdef BOOST_WINDOWS_API || c == path::preferred_separator || c == L':' # endif ; } } // namespace detail //------------------------------------------------------------------------------------// // class path miscellaneous function implementations // //------------------------------------------------------------------------------------// inline path::reverse_iterator path::rbegin() const { return reverse_iterator(end()); } inline path::reverse_iterator path::rend() const { return reverse_iterator(begin()); } inline bool path::filename_is_dot() const { // implicit dot is tricky, so actually call filename(); see path::filename() example // in reference.html path p(filename()); return p.size() == 1 && *p.c_str() == dot; } inline bool path::filename_is_dot_dot() const { return size() >= 2 && m_pathname[size()-1] == dot && m_pathname[size()-2] == dot && (m_pathname.size() == 2 || detail::is_element_separator(m_pathname[size()-3])); // use detail::is_element_separator() rather than detail::is_directory_separator // to deal with "c:.." edge case on Windows when ':' acts as a separator } //--------------------------------------------------------------------------------------// // class path member template implementation // //--------------------------------------------------------------------------------------// template <class InputIterator> path& path::append(InputIterator begin, InputIterator end) { if (begin == end) return *this; string_type::size_type sep_pos(m_append_separator_if_needed()); std::basic_string<typename std::iterator_traits<InputIterator>::value_type> seq(begin, end); path_traits::convert(seq.c_str(), seq.c_str()+seq.size(), m_pathname); if (sep_pos) m_erase_redundant_separator(sep_pos); return *this; } template <class InputIterator> path& path::append(InputIterator begin, InputIterator end, const codecvt_type& cvt) { if (begin == end) return *this; string_type::size_type sep_pos(m_append_separator_if_needed()); std::basic_string<typename std::iterator_traits<InputIterator>::value_type> seq(begin, end); path_traits::convert(seq.c_str(), seq.c_str()+seq.size(), m_pathname, cvt); if (sep_pos) m_erase_redundant_separator(sep_pos); return *this; } template <class Source> path& path::append(Source const& source) { if (path_traits::empty(source)) return *this; string_type::size_type sep_pos(m_append_separator_if_needed()); path_traits::dispatch(source, m_pathname); if (sep_pos) m_erase_redundant_separator(sep_pos); return *this; } template <class Source> path& path::append(Source const& source, const codecvt_type& cvt) { if (path_traits::empty(source)) return *this; string_type::size_type sep_pos(m_append_separator_if_needed()); path_traits::dispatch(source, m_pathname, cvt); if (sep_pos) m_erase_redundant_separator(sep_pos); return *this; } //--------------------------------------------------------------------------------------// // class path member template specializations // //--------------------------------------------------------------------------------------// template <> inline std::string path::string<std::string>() const { return string(); } template <> inline std::wstring path::string<std::wstring>() const { return wstring(); } template <> inline std::string path::string<std::string>(const codecvt_type& cvt) const { return string(cvt); } template <> inline std::wstring path::string<std::wstring>(const codecvt_type& cvt) const { return wstring(cvt); } template <> inline std::string path::generic_string<std::string>() const { return generic_string(); } template <> inline std::wstring path::generic_string<std::wstring>() const { return generic_wstring(); } template <> inline std::string path::generic_string<std::string>(const codecvt_type& cvt) const { return generic_string(cvt); } template <> inline std::wstring path::generic_string<std::wstring>(const codecvt_type& cvt) const { return generic_wstring(cvt); } //--------------------------------------------------------------------------------------// // path_traits convert function implementations // // requiring path::codecvt() be visable // //--------------------------------------------------------------------------------------// namespace path_traits { // without codecvt inline void convert(const char* from, const char* from_end, // 0 for null terminated MBCS std::wstring & to) { convert(from, from_end, to, path::codecvt()); } inline void convert(const wchar_t* from, const wchar_t* from_end, // 0 for null terminated MBCS std::string & to) { convert(from, from_end, to, path::codecvt()); } inline void convert(const char* from, std::wstring & to) { BOOST_ASSERT(!!from); convert(from, 0, to, path::codecvt()); } inline void convert(const wchar_t* from, std::string & to) { BOOST_ASSERT(!!from); convert(from, 0, to, path::codecvt()); } } // namespace path_traits } // namespace filesystem } // namespace boost //----------------------------------------------------------------------------// #include <boost/config/abi_suffix.hpp> // pops abi_prefix.hpp pragmas #endif // BOOST_FILESYSTEM_PATH_HPP