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construct/matrix/users_servers.cc

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// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2019 Jason Volk <jason@zemos.net>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice is present in all copies. The
// full license for this software is available in the LICENSE file.
bool
ircd::m::user::servers::has(const string_view &server,
const string_view &membership)
const
{
// Return true if broken out of loop.
return !for_each(membership, []
(const auto &server) noexcept
{
// Break out of loop at first shared room
return false;
});
}
size_t
ircd::m::user::servers::count(const string_view &membership)
const
{
size_t ret{0};
for_each(membership, [&ret]
(const auto &server) noexcept
{
++ret;
return true;
});
return ret;
}
bool
ircd::m::user::servers::for_each(const closure_bool &closure)
const
{
return for_each(string_view{}, closure);
}
bool
ircd::m::user::servers::for_each(const string_view &membership,
const closure_bool &closure)
const
{
const m::user::rooms rooms
{
user
};
std::set<std::string, std::less<>> seen;
return rooms.for_each(membership, rooms::closure_bool{[&closure, &seen]
(const m::room &room, const string_view &membership)
{
const room::origins origins
{
room
};
return origins.for_each(room::origins::closure_bool{[&closure, &seen]
(const string_view &origin)
{
const auto it
{
seen.lower_bound(origin)
};
if(it != end(seen) && *it == origin)
return true;
seen.emplace_hint(it, std::string{origin});
return closure(origin);
}});
}});
}