70 lines
1.4 KiB
C++
70 lines
1.4 KiB
C++
|
|
// 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_GRAMMAR_IMPL_LITERAL_RULE_IPP
|
|
#define BOOST_URL_GRAMMAR_IMPL_LITERAL_RULE_IPP
|
|
|
|
#include <boost/url/grammar/literal_rule.hpp>
|
|
#include <boost/assert.hpp>
|
|
#include <cstring>
|
|
|
|
namespace boost {
|
|
namespace urls {
|
|
namespace grammar {
|
|
|
|
auto
|
|
literal_rule::
|
|
parse(
|
|
char const*& it,
|
|
char const* end) const noexcept ->
|
|
result<value_type>
|
|
{
|
|
// Can't have a literal
|
|
// with an empty string!
|
|
BOOST_ASSERT(n_ > 0);
|
|
|
|
std::size_t n = end - it;
|
|
if(n >= n_)
|
|
{
|
|
if(std::memcmp(
|
|
it, s_, n_) != 0)
|
|
{
|
|
// non-match
|
|
BOOST_URL_RETURN_EC(
|
|
error::mismatch);
|
|
}
|
|
it += n_;
|
|
return string_view(
|
|
it - n_, it);
|
|
}
|
|
if(n > 0)
|
|
{
|
|
// short input
|
|
if(std::memcmp(
|
|
it, s_, n) != 0)
|
|
{
|
|
// non-match
|
|
BOOST_URL_RETURN_EC(
|
|
error::mismatch);
|
|
}
|
|
// prefix matches
|
|
BOOST_URL_RETURN_EC(
|
|
error::need_more);
|
|
}
|
|
// end
|
|
BOOST_URL_RETURN_EC(
|
|
error::need_more);
|
|
}
|
|
|
|
} // grammar
|
|
} // urls
|
|
} // boost
|
|
|
|
#endif
|