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// Copyright (c) 2003 Daniel Wallin and Arvid Norberg
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
// ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
// PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
// SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
// ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
// OR OTHER DEALINGS IN THE SOFTWARE.
#ifndef LUABIND_DIRECTORY_ITERATOR_HPP_INCLUDED
#define LUABIND_DIRECTORY_ITERATOR_HPP_INCLUDED
#include <luabind/config.hpp>
#include <luabind/detail/policy.hpp>
#include <luabind/detail/implicit_cast.hpp>
#include <luabind/detail/convert_to_lua.hpp>
namespace luabind { namespace detail
{
template<class Iter>
struct dir_iterator_state
{
typedef dir_iterator_state<Iter> self_t;
static int step(lua_State* L)
{
self_t& state = *static_cast<self_t*>(lua_touserdata(L, lua_upvalueindex(1)));
if (state.start == state.end)
{
lua_pushnil(L);
return 1;
}
else
{
convert_to_lua(L, *state.start);
}
++state.start;
return 1;
}
dir_iterator_state(const Iter& s, const Iter& e)
: start(s)
, end(e)
{}
Iter start;
Iter end;
};
struct dir_iterator_converter
{
template<class T>
void apply(lua_State* L, const T& c)
{
typedef boost::filesystem::directory_iterator iter_t;
typedef dir_iterator_state<iter_t> state_t;
// note that this should be destructed, for now.. just hope that iterator
// is a pod
void* iter = lua_newuserdata(L, sizeof(state_t));
new (iter) state_t(iter_t(c), iter_t());
lua_pushcclosure(L, state_t::step, 1);
}
template<class T>
void apply(lua_State* L, T& c)
{
typedef boost::filesystem::directory_iterator iter_t;
typedef dir_iterator_state<iter_t> state_t;
// note that this should be destructed, for now.. just hope that iterator
// is a pod
void* iter = lua_newuserdata(L, sizeof(state_t));
new (iter) state_t(iter_t(c), iter_t());
lua_pushcclosure(L, state_t::step, 1);
}
};
struct dir_iterator_policy : conversion_policy<0>
{
static void precall(lua_State*, const index_map&) {}
static void postcall(lua_State*, const index_map&) {}
template<class T, class Direction>
struct generate_converter
{
typedef dir_iterator_converter type;
};
};
}}
namespace luabind
{
namespace
{
LUABIND_ANONYMOUS_FIX detail::policy_cons<detail::dir_iterator_policy, detail::null_type> return_directory_iterator;
}
}
#endif // LUABIND_ITERATOR_POLICY_HPP_INCLUDED
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