Added thirdparty: boost library

thirdparty/include/boost/url/detail/path.hpp

@@ -0,0 +1,140 @@
+//
+// Copyright (c) 2019 Vinnie Falco (vinnie.falco@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_DETAIL_PATH_HPP
+#define BOOST_URL_DETAIL_PATH_HPP
+
+#include <boost/core/detail/string_view.hpp>
+
+namespace boost {
+namespace urls {
+namespace detail {
+
+// Return the number of characters at
+// the front of the path that are reserved
+inline
+std::size_t
+path_prefix(
+    char const* p,
+    std::size_t n) noexcept
+{
+    switch(n)
+    {
+    case 0:
+        return 0;
+
+    case 1:
+        if(p[0] == '/')
+            return 1;
+        return 0;
+
+    case 2:
+        if(p[0] == '/')
+            return 1;
+        if( p[0] == '.' &&
+            p[1] == '/')
+            return 2;
+        return 0;
+
+    default:
+        if(p[0] == '/')
+        {
+            if( p[1] == '.' &&
+                p[2] == '/')
+                return 3;
+            return 1;
+        }
+        if( p[0] == '.' &&
+            p[1] == '/')
+            return 2;
+        break;
+    }
+    return 0;
+}
+
+// VFALCO DEPRECATED
+inline
+std::size_t
+path_prefix(
+    core::string_view s) noexcept
+{
+    return path_prefix(
+        s.data(), s.size());
+}
+
+// returns the number of adjusted
+// segments based on the malleable prefix.
+inline
+std::size_t
+path_segments(
+    core::string_view s,
+    std::size_t nseg) noexcept
+{
+    switch(s.size())
+    {
+    case 0:
+        BOOST_ASSERT(nseg == 0);
+        return 0;
+
+    case 1:
+        BOOST_ASSERT(nseg == 1);
+        if(s[0] == '/')
+            return 0;
+        return 1;
+
+    case 2:
+        if(s[0] == '/')
+            return nseg;
+        if( s[0] == '.' &&
+            s[1] == '/')
+        {
+            BOOST_ASSERT(nseg > 1);
+            return nseg - 1;
+        }
+        return nseg;
+
+    default:
+        if(s[0] == '/')
+        {
+            if( s[1] == '.' &&
+                s[2] == '/')
+            {
+                BOOST_ASSERT(nseg > 1);
+                return nseg - 1;
+            }
+            return nseg;
+        }
+        if( s[0] == '.' &&
+            s[1] == '/')
+        {
+            BOOST_ASSERT(nseg > 1);
+            return nseg - 1;
+        }
+        break;
+    }
+    return nseg;
+}
+
+// Trim reserved characters from
+// the front of the path.
+inline
+core::string_view
+clean_path(
+    core::string_view s) noexcept
+{
+    s.remove_prefix(
+        path_prefix(s));
+    return s;
+}
+
+} // detail
+} // urls
+} // boost
+
+#endif