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
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
|
#include "core/pch.hh"
#include "core/io/buffer.hh"
#include "core/math/constexpr.hh"
io::ReadBuffer::ReadBuffer(const void* data, std::size_t size)
{
reset(data, size);
}
io::ReadBuffer::ReadBuffer(const ENetPacket* packet)
{
reset(packet);
}
io::ReadBuffer::ReadBuffer(PHYSFS_File* file)
{
reset(file);
}
std::size_t io::ReadBuffer::size(void) const
{
return m_vector.size();
}
const std::byte* io::ReadBuffer::data(void) const
{
return m_vector.data();
}
void io::ReadBuffer::reset(const void* data, std::size_t size)
{
auto bytes = reinterpret_cast<const std::byte*>(data);
m_vector.assign(bytes, bytes + size);
m_position = 0U;
}
void io::ReadBuffer::reset(const ENetPacket* packet)
{
auto bytes_ptr = reinterpret_cast<const std::byte*>(packet->data);
m_vector.assign(bytes_ptr, bytes_ptr + packet->dataLength);
m_position = 0;
}
void io::ReadBuffer::reset(PHYSFS_File* file)
{
m_vector.resize(PHYSFS_fileLength(file));
m_position = 0;
PHYSFS_seek(file, 0);
PHYSFS_readBytes(file, m_vector.data(), m_vector.size());
}
float io::ReadBuffer::read_FP32(void)
{
return math::uint32_to_float(read_UI32());
}
std::uint8_t io::ReadBuffer::read_UI8(void)
{
if((m_position + 1U) <= m_vector.size()) {
auto result = static_cast<std::uint8_t>(m_vector[m_position]);
m_position += 1U;
return result;
}
m_position += 1U;
return 0;
}
std::uint16_t io::ReadBuffer::read_UI16(void)
{
if((m_position + 2U) <= m_vector.size()) {
auto result = UINT16_C(0x0000);
result |= static_cast<std::uint16_t>(m_vector[m_position + 0U]) << 8U;
result |= static_cast<std::uint16_t>(m_vector[m_position + 1U]) << 0U;
m_position += 2U;
return result;
}
m_position += 2U;
return 0;
}
std::uint32_t io::ReadBuffer::read_UI32(void)
{
if((m_position + 4U) <= m_vector.size()) {
auto result = UINT32_C(0x00000000);
result |= static_cast<std::uint32_t>(m_vector[m_position + 0U]) << 24U;
result |= static_cast<std::uint32_t>(m_vector[m_position + 1U]) << 16U;
result |= static_cast<std::uint32_t>(m_vector[m_position + 2U]) << 8U;
result |= static_cast<std::uint32_t>(m_vector[m_position + 3U]) << 0U;
m_position += 4U;
return result;
}
m_position += 4U;
return 0;
}
std::uint64_t io::ReadBuffer::read_UI64(void)
{
if((m_position + 8U) <= m_vector.size()) {
auto result = UINT64_C(0x0000000000000000);
result |= (0x00000000000000FF & static_cast<std::uint64_t>(m_vector[m_position + 0U])) << 56U;
result |= (0x00000000000000FF & static_cast<std::uint64_t>(m_vector[m_position + 1U])) << 48U;
result |= (0x00000000000000FF & static_cast<std::uint64_t>(m_vector[m_position + 2U])) << 40U;
result |= (0x00000000000000FF & static_cast<std::uint64_t>(m_vector[m_position + 3U])) << 32U;
result |= (0x00000000000000FF & static_cast<std::uint64_t>(m_vector[m_position + 4U])) << 24U;
result |= (0x00000000000000FF & static_cast<std::uint64_t>(m_vector[m_position + 5U])) << 16U;
result |= (0x00000000000000FF & static_cast<std::uint64_t>(m_vector[m_position + 6U])) << 8U;
result |= (0x00000000000000FF & static_cast<std::uint64_t>(m_vector[m_position + 7U])) << 0U;
m_position += 8U;
return result;
}
m_position += 8U;
return 0;
}
std::string io::ReadBuffer::read_string(void)
{
auto size = static_cast<std::size_t>(read_UI16());
auto result = std::string();
for(std::size_t i = 0; i < size; ++i) {
if(m_position < m_vector.size()) {
result.push_back(static_cast<char>(m_vector[m_position]));
}
m_position += 1U;
}
return result;
}
std::size_t io::WriteBuffer::size(void) const
{
return m_vector.size();
}
const std::byte* io::WriteBuffer::data(void) const
{
return m_vector.data();
}
void io::WriteBuffer::reset(void)
{
m_vector.clear();
}
void io::WriteBuffer::write_UI8(std::uint8_t value)
{
m_vector.push_back(static_cast<std::byte>(value));
}
void io::WriteBuffer::write_UI16(std::uint16_t value)
{
m_vector.push_back(static_cast<std::byte>(UINT16_C(0xFF) & ((value & UINT16_C(0xFF00)) >> 8U)));
m_vector.push_back(static_cast<std::byte>(UINT16_C(0xFF) & ((value & UINT16_C(0x00FF)) >> 0U)));
}
void io::WriteBuffer::write_UI32(std::uint32_t value)
{
m_vector.push_back(static_cast<std::byte>(UINT32_C(0xFF) & ((value & UINT32_C(0xFF000000)) >> 24U)));
m_vector.push_back(static_cast<std::byte>(UINT32_C(0xFF) & ((value & UINT32_C(0x00FF0000)) >> 16U)));
m_vector.push_back(static_cast<std::byte>(UINT32_C(0xFF) & ((value & UINT32_C(0x0000FF00)) >> 8U)));
m_vector.push_back(static_cast<std::byte>(UINT32_C(0xFF) & ((value & UINT32_C(0x000000FF)) >> 0U)));
}
void io::WriteBuffer::write_UI64(std::uint64_t value)
{
m_vector.push_back(static_cast<std::byte>(UINT64_C(0xFF) & ((value & UINT64_C(0xFF00000000000000)) >> 56U)));
m_vector.push_back(static_cast<std::byte>(UINT64_C(0xFF) & ((value & UINT64_C(0x00FF000000000000)) >> 48U)));
m_vector.push_back(static_cast<std::byte>(UINT64_C(0xFF) & ((value & UINT64_C(0x0000FF0000000000)) >> 40U)));
m_vector.push_back(static_cast<std::byte>(UINT64_C(0xFF) & ((value & UINT64_C(0x000000FF00000000)) >> 32U)));
m_vector.push_back(static_cast<std::byte>(UINT64_C(0xFF) & ((value & UINT64_C(0x00000000FF000000)) >> 24U)));
m_vector.push_back(static_cast<std::byte>(UINT64_C(0xFF) & ((value & UINT64_C(0x0000000000FF0000)) >> 16U)));
m_vector.push_back(static_cast<std::byte>(UINT64_C(0xFF) & ((value & UINT64_C(0x000000000000FF00)) >> 8U)));
m_vector.push_back(static_cast<std::byte>(UINT64_C(0xFF) & ((value & UINT64_C(0x00000000000000FF)) >> 0U)));
}
void io::WriteBuffer::write_string(const std::string& value)
{
const std::size_t size = math::min<std::size_t>(UINT16_MAX, value.size());
write_UI16(static_cast<std::uint16_t>(size));
for(std::size_t i = 0; i < size; m_vector.push_back(static_cast<std::byte>(value[i++]))) {
// empty
}
}
PHYSFS_File* io::WriteBuffer::to_file(const char* path, bool append) const
{
if(auto file = (append ? PHYSFS_openAppend(path) : PHYSFS_openWrite(path))) {
PHYSFS_writeBytes(file, m_vector.data(), m_vector.size());
return file;
}
return nullptr;
}
ENetPacket* io::WriteBuffer::to_packet(enet_uint32 flags) const
{
return enet_packet_create(m_vector.data(), m_vector.size(), flags);
}
|
