mirror of
https://github.com/matrix-construct/construct
synced 2024-11-13 21:41:06 +01:00
100 lines
3.2 KiB
C++
100 lines
3.2 KiB
C++
// 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.
|
|
|
|
ircd::string_view
|
|
ircd::m::display_name(const mutable_buffer &out,
|
|
const room &room)
|
|
{
|
|
const room::state state
|
|
{
|
|
room
|
|
};
|
|
|
|
// 1. If the room has an m.room.name state event with a non-empty name
|
|
// field, use the name given by that field.
|
|
string_view ret;
|
|
{
|
|
const event::idx event_idx
|
|
{
|
|
state.get(std::nothrow, "m.room.name", "")
|
|
};
|
|
|
|
m::get(std::nothrow, event_idx, "content", [&out, &ret]
|
|
(const json::object &content)
|
|
{
|
|
const json::string &name
|
|
{
|
|
content.get("name")
|
|
};
|
|
|
|
ret = strlcpy
|
|
{
|
|
out, name
|
|
};
|
|
});
|
|
}
|
|
|
|
// 2. If the room has an m.room.canonical_alias state event with a
|
|
// non-empty alias field, use the alias given by that field as the name.
|
|
if(!ret)
|
|
{
|
|
const event::idx event_idx
|
|
{
|
|
state.get(std::nothrow, "m.room.canonical_alias", "")
|
|
};
|
|
|
|
m::get(std::nothrow, event_idx, "content", [&out, &ret]
|
|
(const json::object &content)
|
|
{
|
|
const json::string &alias
|
|
{
|
|
content.get("alias")
|
|
};
|
|
|
|
ret = strlcpy
|
|
{
|
|
out, alias
|
|
};
|
|
});
|
|
}
|
|
|
|
// 3. If neither of the above conditions are met, the client can optionally
|
|
// guess an alias from the m.room.alias events in the room. This is a
|
|
// temporary measure while clients do not promote canonical aliases as
|
|
// prominently. This step may be removed in a future version of the
|
|
// specification.
|
|
|
|
// 4. If none of the above conditions are met, a name should be composed
|
|
// based on the members of the room. Clients should consider m.room.member
|
|
// events for users other than the logged-in user, as defined below.
|
|
|
|
// i. If the number of m.heroes for the room are greater or equal to
|
|
// m.joined_member_count + m.invited_member_count - 1, then use the
|
|
// membership events for the heroes to calculate display names for the
|
|
// users (disambiguating them if required) and concatenating them. For
|
|
// example, the client may choose to show "Alice, Bob, and Charlie
|
|
// (@charlie:example.org)" as the room name. The client may optionally
|
|
// limit the number of users it uses to generate a room name.
|
|
|
|
// ii. If there are fewer heroes than m.joined_member_count +
|
|
// m.invited_member_count - 1, and m.joined_member_count +
|
|
// m.invited_member_count is greater than 1, the client should use the
|
|
// heroes to calculate display names for the users (disambiguating them if
|
|
// required) and concatenating them alongside a count of the remaining
|
|
// users. For example, "Alice, Bob, and 1234 others".
|
|
|
|
// iii. If m.joined_member_count + m.invited_member_count is less than or
|
|
// equal to 1 (indicating the member is alone), the client should use the
|
|
// rules above to indicate that the room was empty. For example, "Empty Room
|
|
// (was Alice)", "Empty Room (was Alice and 1234 others)", or "Empty Room"
|
|
// if there are no heroes.
|
|
|
|
return ret;
|
|
}
|