update boost

linx64/include/boost/url/rfc/impl/pct_encoded_rule.hpp

@@ -0,0 +1,103 @@
+//
+// Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot 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_RFC_IMPL_PCT_ENCODED_RULE_HPP
+#define BOOST_URL_RFC_IMPL_PCT_ENCODED_RULE_HPP
+
+#include <boost/url/grammar/charset.hpp>
+#include <boost/url/grammar/error.hpp>
+#include <boost/url/grammar/hexdig_chars.hpp>
+
+namespace boost {
+namespace urls {
+
+namespace detail {
+
+template<class CharSet>
+auto
+parse_encoded(
+    char const*& it,
+    char const* end,
+    CharSet const& cs) noexcept ->
+        system::result<pct_string_view>
+{
+    auto const start = it;
+    std::size_t n = 0;
+    char const* it0;
+skip:
+    it0 = it;
+    it = grammar::find_if_not(
+        it0, end, cs);
+    n += it - it0;
+    if(it == end)
+        goto finish;
+    if(*it != '%')
+        goto finish;
+    for(;;)
+    {
+        ++it;
+        if(it == end)
+        {
+            // expected HEXDIG
+            BOOST_URL_RETURN_EC(
+                grammar::error::invalid);
+        }
+        auto r = grammar::hexdig_value(*it);
+        if(r < 0)
+        {
+            // expected HEXDIG
+            BOOST_URL_RETURN_EC(
+                grammar::error::invalid);
+        }
+        ++it;
+        if(it == end)
+        {
+            // expected HEXDIG
+            BOOST_URL_RETURN_EC(
+                grammar::error::invalid);
+        }
+        r = grammar::hexdig_value(*it);
+        if(r < 0)
+        {
+            // expected HEXDIG
+            BOOST_URL_RETURN_EC(
+                grammar::error::invalid);
+        }
+        ++n;
+        ++it;
+        if(it == end)
+            break;
+        if(*it != '%')
+            goto skip;
+    }
+finish:
+    return make_pct_string_view_unsafe(
+        start, it - start, n);
+}
+
+} // detail
+
+//------------------------------------------------
+
+template<class CharSet>
+auto
+pct_encoded_rule_t<CharSet>::
+parse(
+    char const*& it,
+    char const* end) const noexcept ->
+        system::result<value_type>
+{
+    return detail::parse_encoded(
+        it, end, cs_);
+}
+
+} // urls
+} // boost
+
+#endif