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
|
#include <config/config.hpp>
#include <utils/tolower.hpp>
#include <iostream>
#include <cstring>
#include <cstdlib>
using namespace std::string_literals;
extern char** environ;
std::string Config::filename{};
std::map<std::string, std::string> Config::values{};
std::vector<t_config_changed_callback> Config::callbacks{};
std::string Config::get(const std::string& option, const std::string& def)
{
auto it = Config::values.find(option);
if (it == Config::values.end())
return def;
return it->second;
}
int Config::get_int(const std::string& option, const int& def)
{
std::string res = Config::get(option, "");
if (!res.empty())
return std::atoi(res.c_str());
else
return def;
}
void Config::set(const std::string& option, const std::string& value, bool save)
{
Config::values[option] = value;
if (save)
{
Config::save_to_file();
Config::trigger_configuration_change();
}
}
void Config::connect(const t_config_changed_callback& callback)
{
Config::callbacks.push_back(callback);
}
void Config::clear()
{
Config::values.clear();
}
/**
* Private methods
*/
void Config::trigger_configuration_change()
{
std::vector<t_config_changed_callback>::iterator it;
for (it = Config::callbacks.begin(); it < Config::callbacks.end(); ++it)
(*it)();
}
bool Config::read_conf(const std::string& name)
{
if (!name.empty())
Config::filename = name;
std::ifstream file(Config::filename.data());
if (!file.is_open())
{
std::cerr << "Error while opening file " << filename << " for reading: " << strerror(errno) << std::endl;
return false;
}
Config::clear();
auto parse_line = [](const std::string& line, const bool env)
{
static const auto env_option_prefix = "BIBOUMI_"s;
if (line == "" || line[0] == '#')
return;
size_t pos = line.find('=');
if (pos == std::string::npos)
return;
std::string option = line.substr(0, pos);
std::string value = line.substr(pos+1);
if (env)
{
auto a = option.substr(0, env_option_prefix.size());
if (a == env_option_prefix)
option = utils::tolower(option.substr(env_option_prefix.size()));
else
return;
}
Config::values[option] = value;
};
std::string line;
while (file.good())
{
std::getline(file, line);
parse_line(line, false);
}
char** env_line = environ;
while (*env_line)
{
parse_line(*env_line, true);
env_line++;
}
return true;
}
void Config::save_to_file()
{
std::ofstream file(Config::filename.data());
if (file.fail())
{
std::cerr << "Could not save config file." << std::endl;
return ;
}
for (const auto& it: Config::values)
file << it.first << "=" << it.second << '\n';
}
|
