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// Copyright (c) 2016-2017 Dr. Colin Hirsch and Daniel Frey
// Please see LICENSE for license or visit https://github.com/taocpp/PEGTL/
#ifndef TAOCPP_PEGTL_INCLUDE_INTERNAL_CSTRING_READER_HPP
#define TAOCPP_PEGTL_INCLUDE_INTERNAL_CSTRING_READER_HPP
#include <cassert>
#include <cstddef>
#include "../config.hpp"
#include "../input_error.hpp"
namespace tao
{
namespace TAOCPP_PEGTL_NAMESPACE
{
namespace internal
{
struct cstring_reader
{
explicit cstring_reader( const char* zero_terminated ) noexcept
: m_cstring( zero_terminated )
{
assert( m_cstring );
}
std::size_t operator()( char* buffer, const std::size_t length ) noexcept
{
std::size_t i = 0;
char c;
while( ( i < length ) && ( ( c = m_cstring[ i ] ) != 0 ) ) {
*buffer++ = c;
++i;
}
m_cstring += i;
return i;
}
const char* m_cstring;
};
} // namespace internal
} // namespace TAOCPP_PEGTL_NAMESPACE
} // namespace tao
#endif
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