Added thirdparty: boost library

thirdparty/include/boost/url/impl/decode_view.hpp

@@ -0,0 +1,172 @@
+//
+// Copyright (c) 2022 Alan de Freitas (alandefreitas@gmail.com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+// Official repository: https://github.com/boostorg/url
+//
+
+#ifndef BOOST_URL_IMPL_PCT_ENCODED_VIEW_HPP
+#define BOOST_URL_IMPL_PCT_ENCODED_VIEW_HPP
+
+#include <boost/url/grammar/type_traits.hpp>
+#include <boost/static_assert.hpp>
+
+namespace boost {
+namespace urls {
+
+class decode_view::iterator
+{
+    char const* begin_ = nullptr;
+    char const* pos_ = nullptr;
+    bool space_as_plus_ = true;
+
+    friend decode_view;
+
+    iterator(
+        char const* str,
+        bool space_as_plus) noexcept
+        : begin_(str)
+        , pos_(str)
+        , space_as_plus_(
+            space_as_plus)
+    {
+    }
+
+    // end ctor
+    iterator(
+        char const* str,
+        size_type n,
+        bool space_as_plus) noexcept
+        : begin_(str)
+        , pos_(str + n)
+        , space_as_plus_(space_as_plus)
+    {
+    }
+
+public:
+    using value_type = char;
+    using reference = char;
+    using pointer = void const*;
+    using const_reference = char;
+    using size_type = std::size_t;
+    using difference_type = std::ptrdiff_t;
+    using iterator_category =
+        std::bidirectional_iterator_tag;
+
+    iterator() = default;
+
+    iterator(iterator const&) = default;
+
+    iterator&
+    operator=(iterator const&) = default;
+
+    BOOST_URL_DECL
+    reference
+    operator*() const noexcept;
+
+    iterator&
+    operator++() noexcept
+    {
+        BOOST_ASSERT(pos_ != nullptr);
+        if (*pos_ != '%')
+            ++pos_;
+        else
+            pos_ += 3;
+        return *this;
+    }
+
+    iterator&
+    operator--() noexcept
+    {
+        BOOST_ASSERT(pos_ != begin_);
+        if (pos_ - begin_ < 3 ||
+                pos_[-3] != '%')
+            --pos_;
+        else
+            pos_ -= 3;
+        return *this;
+    }
+
+    iterator
+    operator++(int) noexcept
+    {
+        auto tmp = *this;
+        ++*this;
+        return tmp;
+    }
+
+    iterator
+    operator--(int) noexcept
+    {
+        auto tmp = *this;
+        --*this;
+        return tmp;
+    }
+
+    char const*
+    base()
+    {
+        return pos_;
+    }
+
+    bool
+    operator==(
+        iterator const& other) const noexcept
+    {
+        return pos_ == other.pos_;
+    }
+
+    bool
+    operator!=(
+        iterator const& other) const noexcept
+    {
+        return !(*this == other);
+    }
+};
+
+//------------------------------------------------
+
+inline
+auto
+decode_view::
+begin() const noexcept ->
+    const_iterator
+{
+    return {p_, space_as_plus_};
+}
+
+inline
+auto
+decode_view::
+end() const noexcept ->
+    const_iterator
+{
+    return {p_, n_, space_as_plus_};
+}
+
+inline
+auto
+decode_view::
+front() const noexcept ->
+    const_reference
+{
+    BOOST_ASSERT( !empty() );
+    return *begin();
+}
+
+inline
+auto
+decode_view::
+back() const noexcept ->
+    const_reference
+{
+    BOOST_ASSERT( !empty() );
+    return *--end();
+}
+
+} // urls
+} // boost
+
+#endif