efl/src/lib/eolian_cxx/grammar/html_escaped_string.hpp

54 lines
1.5 KiB
C++

#ifndef EOLIAN_CXX_HTML_ESCAPED_STRING_HH
#define EOLIAN_CXX_HTML_ESCAPED_STRING_HH
#include <cstdlib>
#include <cstring>
#include "grammar/generator.hpp"
#include "grammar/attributes.hpp"
#include "grammar/string.hpp"
namespace efl { namespace eolian { namespace grammar {
struct html_escaped_string_generator
{
template<typename OutputIterator, typename Context>
bool generate(OutputIterator sink, std::string const& input, Context const& context) const
{
std::string out;
out.reserve(input.size());
for (size_t pos = 0; pos != input.size(); ++pos)
{
switch(input[pos])
{
case '&': out.append("&amp;"); break;
case '\"': out.append("&quot;"); break;
case '\'': out.append("&apos;"); break;
case '<': out.append("&lt;"); break;
case '>': out.append("&gt;"); break;
case '\\': if (pos < input.size() - 1) pos++;
// fall through
default: out.append(&input[pos], 1); break;
}
}
return as_generator(string).generate(sink, out, context);
}
};
struct html_escaped_string_generator const html_escaped_string = {};
template <>
struct is_eager_generator<html_escaped_string_generator> : std::true_type {};
template <>
struct is_generator<html_escaped_string_generator> : std::true_type {};
namespace type_traits {
template <>
struct attributes_needed<html_escaped_string_generator> : std::integral_constant<int, 1> {};
}
} } }
#endif