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263 lines
9.2 KiB
263 lines
9.2 KiB
/* /////////////////////////////////////////////////////////////////////////
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* File: inetstl/filesystem/functionals.hpp
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*
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* Purpose: File-system functionals.
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*
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* Created: 19th January 2002
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* Updated: 29th November 2010
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*
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* Home: http://stlsoft.org/
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*
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* Copyright (c) 2002-2010, Matthew Wilson and Synesis Software
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name(s) of Matthew Wilson and Synesis Software nor the names of
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* any contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* ////////////////////////////////////////////////////////////////////// */
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/** \file inetstl/filesystem/functionals.hpp
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*
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* \brief [C++ only] File-system functionals
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* (\ref group__library__filesystem "File System" Library).
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*/
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#ifndef INETSTL_INCL_INETSTL_FILESYSTEM_HPP_FUNCTIONALS
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#define INETSTL_INCL_INETSTL_FILESYSTEM_HPP_FUNCTIONALS
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#ifndef STLSOFT_DOCUMENTATION_SKIP_SECTION
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# define INETSTL_VER_INETSTL_FILESYSTEM_HPP_FUNCTIONALS_MAJOR 4
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# define INETSTL_VER_INETSTL_FILESYSTEM_HPP_FUNCTIONALS_MINOR 0
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# define INETSTL_VER_INETSTL_FILESYSTEM_HPP_FUNCTIONALS_REVISION 4
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# define INETSTL_VER_INETSTL_FILESYSTEM_HPP_FUNCTIONALS_EDIT 34
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#endif /* !STLSOFT_DOCUMENTATION_SKIP_SECTION */
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/* /////////////////////////////////////////////////////////////////////////
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* Includes
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*/
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#ifndef INETSTL_INCL_INETSTL_H_INETSTL
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# include <inetstl/inetstl.h>
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#endif /* !INETSTL_INCL_INETSTL_H_INETSTL */
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#ifndef INETSTL_OS_IS_WINDOWS
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# error This file is currently compatible only with the Win32/Win64 API
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#endif /* !INETSTL_OS_IS_WINDOWS */
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#ifndef STLSOFT_INCL_STLSOFT_SHIMS_ACCESS_HPP_STRING
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# include <stlsoft/shims/access/string.hpp>
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#endif /* !STLSOFT_INCL_STLSOFT_SHIMS_ACCESS_HPP_STRING */
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#ifndef INETSTL_INCL_INETSTL_FILESYSTEM_HPP_FILESYSTEM_TRAITS
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# include <inetstl/filesystem/filesystem_traits.hpp>
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#endif /* !INETSTL_INCL_INETSTL_FILESYSTEM_HPP_FILESYSTEM_TRAITS */
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#ifndef STLSOFT_INCL_STLSOFT_UTIL_HPP_MINMAX
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# include <stlsoft/util/minmax.hpp>
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#endif /* !STLSOFT_INCL_STLSOFT_UTIL_HPP_MINMAX */
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#ifndef _INETSTL_FUNCTIONALS_NO_STD
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# include <functional>
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#else /* ? _INETSTL_FUNCTIONALS_NO_STD */
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# error Now need to write that std_binary_function stuff!!
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#endif /* _INETSTL_FUNCTIONALS_NO_STD */
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/* /////////////////////////////////////////////////////////////////////////
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* Namespace
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*/
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#ifndef _INETSTL_NO_NAMESPACE
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# if defined(_STLSOFT_NO_NAMESPACE) || \
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defined(STLSOFT_DOCUMENTATION_SKIP_SECTION)
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/* There is no stlsoft namespace, so must define ::inetstl */
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namespace inetstl
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{
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# else
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/* Define stlsoft::inetstl_project */
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namespace stlsoft
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{
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namespace inetstl_project
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{
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# endif /* _STLSOFT_NO_NAMESPACE */
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#endif /* !_INETSTL_NO_NAMESPACE */
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/* /////////////////////////////////////////////////////////////////////////
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* Classes
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*/
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/** \brief A function class that compares two file-system paths
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*
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* \ingroup group__library__filesystem
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*
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* \param C The character type
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* \param A1 The left-hand argument type; defaults to C const*
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* \param A2 The right-hand argument type; defaults to C const*
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*/
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// [[synesis:class:function-class:binary-predicate: path_compare<T<C>, T<A1>, T<A2>>]]
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template< ss_typename_param_k C
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, ss_typename_param_k A1 = C const*
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, ss_typename_param_k A2 = C const*
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>
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struct path_compare
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: public inetstl_ns_qual_std(binary_function)<A1, A2, is_bool_t>
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{
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public:
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/// The character type
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typedef C char_type;
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private:
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typedef inetstl_ns_qual_std(binary_function)<A1, A2, is_bool_t> parent_class_type;
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public:
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/// The first argument type
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typedef ss_typename_type_k parent_class_type::first_argument_type first_argument_type;
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/// The second argument type
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typedef ss_typename_type_k parent_class_type::second_argument_type second_argument_type;
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/// The result type
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typedef ss_typename_type_k parent_class_type::result_type result_type;
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/// The traits type
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typedef filesystem_traits<C> traits_type;
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/// The current parameterisation of the type
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typedef path_compare<C, A1, A2> class_type;
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public:
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/// Function call, compares \c s1 with \c s2
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///
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/// \note The comparison is determined by evaluation the full-paths of both \c s1 and \c s2
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#ifdef STLSOFT_CF_MEMBER_TEMPLATE_FUNCTION_SUPPORT
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template<ss_typename_param_k T1, ss_typename_param_k T2>
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result_type operator ()(T1 const& s1, T2 const& s2) const
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#else /* ? STLSOFT_CF_MEMBER_TEMPLATE_FUNCTION_SUPPORT */
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result_type operator ()(first_argument_type s1, second_argument_type s2) const
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#endif /* STLSOFT_CF_MEMBER_TEMPLATE_FUNCTION_SUPPORT */
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{
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return compare_(stlsoft_ns_qual(c_str_ptr)(s1), stlsoft_ns_qual(c_str_ptr)(s2));
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}
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// Implementation
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private:
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static result_type compare_(char_type const* s1, char_type const* s2)
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{
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char_type path1[_MAX_PATH + 1];
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char_type path2[_MAX_PATH + 1];
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is_size_t const len1 = traits_type::str_len(s1);
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is_size_t const len2 = traits_type::str_len(s2);
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traits_type::char_copy(&path1[0], s1, stlsoft_ns_qual(minimum)(STLSOFT_NUM_ELEMENTS(path1), len1));
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path1[len1] = '\0';
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traits_type::char_copy(&path2[0], s2, stlsoft_ns_qual(minimum)(STLSOFT_NUM_ELEMENTS(path2), len2));
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path2[len2] = '\0';
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traits_type::remove_dir_end(&path1[0]);
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traits_type::remove_dir_end(&path2[0]);
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s1 = &path1[0];
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s2 = &path2[0];
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return 0 == traits_type::str_compare(s1, s2);
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}
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};
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/** \brief Predicate that indicates whether a given path exists
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*
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* \ingroup group__library__filesystem
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*
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* \param C The character type
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* \param A The argument type; defaults to C const*
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*/
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template< ss_typename_param_k C
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, ss_typename_param_k A = C const*
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>
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// [[synesis:class:function-class:unary-predicate: path_exists<T<C>, T<A>>]]
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struct path_exists
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: public inetstl_ns_qual_std(unary_function)<A, is_bool_t>
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{
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public:
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/// The character type
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typedef C char_type;
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/// The traits type
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typedef filesystem_traits<C> traits_type;
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/// The current parameterisation of the type
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typedef path_exists<C> class_type;
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public:
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ss_explicit_k path_exists(HINTERNET hConnection)
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: m_hConnection(hConnection)
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{}
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public:
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#ifdef STLSOFT_CF_MEMBER_TEMPLATE_FUNCTION_SUPPORT
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template <ss_typename_param_k S>
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is_bool_t operator ()(S const& s) const
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#else /* ? STLSOFT_CF_MEMBER_TEMPLATE_FUNCTION_SUPPORT */
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is_bool_t operator ()(argument_type s) const
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#endif /* STLSOFT_CF_MEMBER_TEMPLATE_FUNCTION_SUPPORT */
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{
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return exists_(stlsoft_ns_qual(c_str_ptr)(s));
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}
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private:
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is_bool_t exists_(char_type const* s) const
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{
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char_type sz0[1 + _MAX_PATH];
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is_dword_t dw;
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if(!traits_type::get_full_path_name(m_hConnection, s, STLSOFT_NUM_ELEMENTS(sz0), sz0))
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{
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dw = 0xFFFFFFFF;
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}
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else
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{
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dw = ::GetFileAttributes(sz0);
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}
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return 0xFFFFFFFF != dw;
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}
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private:
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HINTERNET m_hConnection;
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};
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////////////////////////////////////////////////////////////////////////////
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// Unit-testing
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#ifdef STLSOFT_UNITTEST
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# include "./unittest/functionals_unittest_.h"
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#endif /* STLSOFT_UNITTEST */
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/* ////////////////////////////////////////////////////////////////////// */
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#ifndef _INETSTL_NO_NAMESPACE
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# if defined(_STLSOFT_NO_NAMESPACE) || \
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defined(STLSOFT_DOCUMENTATION_SKIP_SECTION)
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} // namespace inetstl
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# else
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} // namespace inetstl_project
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} // namespace stlsoft
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# endif /* _STLSOFT_NO_NAMESPACE */
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#endif /* !_INETSTL_NO_NAMESPACE */
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/* ////////////////////////////////////////////////////////////////////// */
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#endif /* INETSTL_INCL_INETSTL_FILESYSTEM_HPP_FUNCTIONALS */
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/* ///////////////////////////// end of file //////////////////////////// */
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