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
|
#include "common.hh"
static void (*ErrorFunction)(const char *Text) = NULL;
static void (*PrintFunction)(int Level, const char *Text) = NULL;
void SetErrorFunction(TErrorFunction *Function){
ErrorFunction = Function;
}
void SetPrintFunction(TPrintFunction *Function){
PrintFunction = Function;
}
void error(char *Text, ...){
char s[1024];
va_list ap;
va_start(ap, Text);
vsnprintf(s, sizeof(s), Text, ap);
va_end(ap);
if(ErrorFunction){
ErrorFunction(s);
}else{
printf("%s", s);
}
}
void print(int Level, char *Text, ...){
char s[1024];
va_list ap;
va_start(ap, Text);
vsnprintf(s, sizeof(s), Text, ap);
va_end(ap);
if(PrintFunction){
PrintFunction(Level, s);
}else{
printf("%s", s);
}
}
// TReadStream
// =============================================================================
bool TReadStream::readFlag(void){
return this->readByte() != 0;
}
uint16 TReadStream::readWord(void){
// NOTE(fusion): Data is encoded in little endian.
uint8 Byte0 = this->readByte();
uint8 Byte1 = this->readByte();
return ((uint16)Byte1 << 8) | (uint16)Byte0;
}
uint32 TReadStream::readQuad(void){
// NOTE(fusion): Data is encoded in little endian.
uint8 Byte0 = this->readByte();
uint8 Byte1 = this->readByte();
uint8 Byte2 = this->readByte();
uint8 Byte3 = this->readByte();
return ((uint32)Byte3 << 24) | ((uint32)Byte2 << 16)
| ((uint32)Byte1 << 8) | (uint32)Byte0;
}
void TReadStream::readString(char *Buffer, int MaxLength){
if(Buffer == NULL || MaxLength == 0){
error("TReadStream::readString: Übergebener Puffer existiert nicht.\n");
throw "internal error";
}
int Length = (int)this->readWord();
if(Length == 0xFFFF){
Length = (int)this->readQuad();
}
if(Length > 0){
if(MaxLength < 0 || MaxLength > Length){
this->readBytes(Buffer, Length);
Buffer[Length] = 0;
}else{
this->readBytes(Buffer, MaxLength - 1);
this->skip(Length - MaxLength + 1);
Buffer[MaxLength - 1] = 0;
}
}else{
Buffer[0] = 0;
}
}
void TReadStream::readBytes(uint8 *Buffer, int Count){
if(Buffer == NULL){
error("TReadStream::readBytes: Übergebener Puffer existiert nicht.\n");
throw "internal error";
}
for(int i = 0; i < Count; i += 1){
Buffer[i] = this->readByte();
}
}
// TReadBuffer
// =============================================================================
TReadBuffer::TReadBuffer(uint8 *Data, int Size){
if(Data == NULL){
error("TReadBuffer::TReadBuffer: data ist NULL.\n");
Size = 0;
}else if(Size < 0){
error("TReadBuffer::TReadBuffer: Ungültige Datengröße %d.\n", Size);
Size = 0;
}
this->Data = Data;
this->Size = Size;
this->Position = 0;
}
uint8 TReadBuffer::readByte(void){
if((this->Size - this->Position) < 1){
throw "buffer empty";
}
uint8 Byte = this->Data[this->Position];
this->Position += 1;
return Byte;
}
uint16 TReadBuffer::readWord(void){
if((this->Size - this->Position) < 2){
throw "buffer empty";
}
uint8 Byte0 = this->Data[this->Position];
uint8 Byte1 = this->Data[this->Position + 1];
this->Position += 2;
return ((uint16)Byte1 << 8) | (uint16)Byte0;
}
uint32 TReadBuffer::readQuad(void){
if((this->Size - this->Position) < 4){
throw "buffer empty";
}
uint8 Byte0 = this->Data[this->Position];
uint8 Byte1 = this->Data[this->Position + 1];
uint8 Byte2 = this->Data[this->Position + 2];
uint8 Byte3 = this->Data[this->Position + 3];
this->Position += 4;
return ((uint32)Byte3 << 24) | ((uint32)Byte2 << 16)
| ((uint32)Byte1 << 8) | (uint32)Byte0;
}
void TReadBuffer::readBytes(uint8 *Buffer, int Count){
if(Buffer == NULL || Count <= 0){
error("TReadBuffer::readBytes: Übergebener Puffer existiert nicht.\n");
throw "buffer not existing";
}
if((this->Size - this->Position) < Count){
throw "buffer empty";
}
memcpy(Buffer, &this->Data[this->Position], Count);
this->Position += Count;
}
bool TReadBuffer::eof(void){
return this->Size <= this->Position;
}
void TReadBuffer::skip(int Count){
if((this->Size - this->Position) < Count){
throw "buffer empty";
}
this->Position += Count;
}
|
