1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/*
Minetest
Copyright (C) 2017 nerzhul, Loic Blot <loic.blot@unix-experience.fr>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "modchannels.h"
#include <algorithm>
#include <cassert>
#include "util/basic_macros.h"
bool ModChannel::registerConsumer(u16 peer_id)
{
// ignore if peer_id already joined
if (CONTAINS(m_client_consumers, peer_id))
return false;
m_client_consumers.push_back(peer_id);
return true;
}
bool ModChannel::removeConsumer(u16 peer_id)
{
bool found = false;
auto peer_removal_fct = [peer_id, &found](u16 p) {
if (p == peer_id)
found = true;
return p == peer_id;
};
m_client_consumers.erase(
std::remove_if(m_client_consumers.begin(),
m_client_consumers.end(), peer_removal_fct),
m_client_consumers.end());
return found;
}
bool ModChannel::canWrite() const
{
return m_state == MODCHANNEL_STATE_READ_WRITE;
}
void ModChannel::setState(ModChannelState state)
{
assert(state != MODCHANNEL_STATE_INIT);
m_state = state;
}
bool ModChannelMgr::channelRegistered(const std::string &channel) const
{
return m_registered_channels.find(channel) != m_registered_channels.end();
}
ModChannel *ModChannelMgr::getModChannel(const std::string &channel)
{
if (!channelRegistered(channel))
return nullptr;
return m_registered_channels[channel].get();
}
bool ModChannelMgr::canWriteOnChannel(const std::string &channel) const
{
const auto channel_it = m_registered_channels.find(channel);
if (channel_it == m_registered_channels.end()) {
return false;
}
return channel_it->second->canWrite();
}
void ModChannelMgr::registerChannel(const std::string &channel)
{
m_registered_channels[channel] =
std::unique_ptr<ModChannel>(new ModChannel(channel));
}
bool ModChannelMgr::setChannelState(const std::string &channel, ModChannelState state)
{
if (!channelRegistered(channel))
return false;
auto channel_it = m_registered_channels.find(channel);
channel_it->second->setState(state);
return true;
}
bool ModChannelMgr::removeChannel(const std::string &channel)
{
if (!channelRegistered(channel))
return false;
m_registered_channels.erase(channel);
return true;
}
bool ModChannelMgr::joinChannel(const std::string &channel, u16 peer_id)
{
if (!channelRegistered(channel))
registerChannel(channel);
return m_registered_channels[channel]->registerConsumer(peer_id);
}
bool ModChannelMgr::leaveChannel(const std::string &channel, u16 peer_id)
{
if (!channelRegistered(channel))
return false;
// Remove consumer from channel
bool consumerRemoved = m_registered_channels[channel]->removeConsumer(peer_id);
// If channel is empty, remove it
if (m_registered_channels[channel]->getChannelPeers().empty()) {
removeChannel(channel);
}
return consumerRemoved;
}
void ModChannelMgr::leaveAllChannels(u16 peer_id)
{
for (auto &channel_it : m_registered_channels)
channel_it.second->removeConsumer(peer_id);
}
static std::vector<u16> empty_channel_list;
const std::vector<u16> &ModChannelMgr::getChannelPeers(const std::string &channel) const
{
const auto &channel_it = m_registered_channels.find(channel);
if (channel_it == m_registered_channels.end())
return empty_channel_list;
return channel_it->second->getChannelPeers();
}
|
