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67 lines
2.2 KiB
C++
67 lines
2.2 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of Beast: https://github.com/vinniefalco/Beast
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Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#ifndef BEAST_UTILITY_CI_CHAR_TRAITS_H_INCLUDED
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#define BEAST_UTILITY_CI_CHAR_TRAITS_H_INCLUDED
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#include <beast/cxx14/algorithm.h> // <algorithm>
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#include <cctype>
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#include <locale>
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#include <string>
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namespace beast {
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/** Case-insensitive function object for performing less than comparisons. */
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struct ci_less
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{
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static bool const is_transparent = true;
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template <class String>
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bool
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operator() (String const& lhs, String const& rhs) const
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{
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typedef typename String::value_type char_type;
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return std::lexicographical_compare (std::begin(lhs), std::end(lhs),
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std::begin(rhs), std::end(rhs),
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[] (char_type lhs, char_type rhs)
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{
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return std::tolower(lhs) < std::tolower(rhs);
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}
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);
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}
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};
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/** Returns `true` if strings are case-insensitive equal. */
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template <class String>
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bool
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ci_equal(String const& lhs, String const& rhs)
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{
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typedef typename String::value_type char_type;
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return std::equal (lhs.begin(), lhs.end(), rhs.begin(), rhs.end(),
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[] (char_type lhs, char_type rhs)
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{
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return std::tolower(lhs) == std::tolower(rhs);
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}
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);
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}
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}
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#endif
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