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
|
/*
$Id: resource_tokenizer.cpp,v 1.5 2001/11/02 02:24:09 plasmoid Exp $
------------------------------------------------------------------------
ClanLib, the platform independent game SDK.
This library is distributed under the GNU LIBRARY GENERAL PUBLIC LICENSE
version 2. See COPYING for details.
For a total list of contributers see CREDITS.
------------------------------------------------------------------------
*/
#include "Core/precomp.h"
#include "resource_tokenizer.h"
#include <API/Core/IOData/inputsource.h>
#include <API/Core/System/cl_assert.h>
#include <API/Core/System/clanstring.h>
CL_ResourceTokenizer::CL_ResourceTokenizer(std::string filename, CL_InputSource *input)
{
this->filename = filename;
cur_pos = 0;
cur_line = 1;
in_remark = false;
cl_assert(input != NULL);
total_size = input->size();
config_file_data = new unsigned char[total_size];
input->read(config_file_data, total_size);
}
CL_ResourceTokenizer::~CL_ResourceTokenizer()
{
delete[] config_file_data;
}
bool CL_ResourceTokenizer::is_operator(char c)
{
return
c == ',' ||
c == '=' ||
c == '(' ||
c == ')' ||
c == ';' ||
c == '{' ||
c == '}';
}
bool CL_ResourceTokenizer::is_space(char c)
{
return
c == ' ' ||
c == '\t' ||
c == 13 ||
c == 10;
}
bool CL_ResourceTokenizer::is_remark(char c, int position)
{
if (in_remark)
{
if (c == '\n')
{
in_remark = false;
}
return true;
}
else
{
if (c == '/')
{
if (
position+1 < total_size &&
config_file_data[position+1] == '/')
{
in_remark = true;
return true;
}
}
else if (c == '#')
{
in_remark = true;
return true;
}
}
return false;
}
std::string CL_ResourceTokenizer::get_next_token()
{
while (
cur_pos < total_size &&
(
is_remark(config_file_data[cur_pos], cur_pos) ||
is_space(config_file_data[cur_pos])
))
{
if (config_file_data[cur_pos] == '\n') cur_line++;
cur_pos++;
}
if (cur_pos == total_size) return "";
if (is_operator(config_file_data[cur_pos]))
{
char temp[2];
temp[0] = config_file_data[cur_pos];
temp[1] = 0;
std::string ret(temp);
cur_pos++;
return ret;
}
else
{
int temp_pos = cur_pos;
if (config_file_data[temp_pos] == '"')
{
int num_chars = 0;
temp_pos++;
while (temp_pos < total_size)
{
if (config_file_data[temp_pos] == '"')
{
if (temp_pos+1>=total_size || config_file_data[temp_pos+1] != '"') break;
else
{
temp_pos++;
}
}
temp_pos++;
num_chars++;
}
if (temp_pos == total_size)
{
write_error("Missing '""' following '""'-begin");
return "";
}
char *temp = new char[num_chars+1];
temp[num_chars] = 0;
int ofs = 1;
for (int i=0;i<num_chars;i++)
{
temp[i] = config_file_data[cur_pos+ofs+i];
if (config_file_data[cur_pos+ofs+i] == '"')
{
ofs++;
}
}
cur_pos = temp_pos+1;
std::string ret(temp);
delete [] temp;
return ret;
}
else
{
while (temp_pos < total_size &&
!is_space(config_file_data[temp_pos]) &&
!is_operator(config_file_data[temp_pos]) &&
!is_remark(config_file_data[temp_pos], cur_pos))
{
temp_pos++;
}
int tok_size = temp_pos-cur_pos;
char *temp = new char[tok_size+1];
temp[tok_size] = 0;
memcpy(temp, &config_file_data[cur_pos], tok_size);
cur_pos += tok_size;
std::string ret(temp);
delete [] temp;
return ret;
}
}
}
std::string CL_ResourceTokenizer::write_error(std::string err_msg)
{
CL_String err;
err << "Error occured during read of config file '" <<
filename.c_str() << "' (line " << cur_line << "): " << err_msg.c_str();
return err.get_string();
}
|
