bsnes/supergameboy/nall/config.hpp

124 lines
3.8 KiB
C++
Executable File

#ifndef NALL_CONFIG_HPP
#define NALL_CONFIG_HPP
#include <nall/file.hpp>
#include <nall/string.hpp>
#include <nall/vector.hpp>
namespace nall {
namespace configuration_traits {
template<typename T> struct is_boolean { enum { value = false }; };
template<> struct is_boolean<bool> { enum { value = true }; };
template<typename T> struct is_signed { enum { value = false }; };
template<> struct is_signed<signed> { enum { value = true }; };
template<typename T> struct is_unsigned { enum { value = false }; };
template<> struct is_unsigned<unsigned> { enum { value = true }; };
template<typename T> struct is_double { enum { value = false }; };
template<> struct is_double<double> { enum { value = true }; };
template<typename T> struct is_string { enum { value = false }; };
template<> struct is_string<string> { enum { value = true }; };
}
class configuration {
public:
enum type_t { boolean_t, signed_t, unsigned_t, double_t, string_t, unknown_t };
struct item_t {
uintptr_t data;
string name;
string desc;
type_t type;
string get() const {
switch(type) {
case boolean_t: return string() << *(bool*)data;
case signed_t: return string() << *(signed*)data;
case unsigned_t: return string() << *(unsigned*)data;
case double_t: return string() << *(double*)data;
case string_t: return string() << "\"" << *(string*)data << "\"";
}
return "???";
}
void set(string s) {
switch(type) {
case boolean_t: *(bool*)data = (s == "true"); break;
case signed_t: *(signed*)data = strsigned(s); break;
case unsigned_t: *(unsigned*)data = strunsigned(s); break;
case double_t: *(double*)data = strdouble(s); break;
case string_t: s.trim("\""); *(string*)data = s; break;
}
}
};
linear_vector<item_t> list;
template<typename T>
void attach(T &data, const char *name, const char *desc = "") {
unsigned n = list.size();
list[n].data = (uintptr_t)&data;
list[n].name = name;
list[n].desc = desc;
if(configuration_traits::is_boolean<T>::value) list[n].type = boolean_t;
else if(configuration_traits::is_signed<T>::value) list[n].type = signed_t;
else if(configuration_traits::is_unsigned<T>::value) list[n].type = unsigned_t;
else if(configuration_traits::is_double<T>::value) list[n].type = double_t;
else if(configuration_traits::is_string<T>::value) list[n].type = string_t;
else list[n].type = unknown_t;
}
virtual bool load(const char *filename) {
string data;
if(data.readfile(filename) == true) {
data.replace("\r", "");
lstring line;
line.split("\n", data);
for(unsigned i = 0; i < line.size(); i++) {
if(auto position = qstrpos(line[i], "#")) line[i][position()] = 0;
if(!qstrpos(line[i], " = ")) continue;
lstring part;
part.qsplit(" = ", line[i]);
part[0].trim();
part[1].trim();
for(unsigned n = 0; n < list.size(); n++) {
if(part[0] == list[n].name) {
list[n].set(part[1]);
break;
}
}
}
return true;
} else {
return false;
}
}
virtual bool save(const char *filename) const {
file fp;
if(fp.open(filename, file::mode::write)) {
for(unsigned i = 0; i < list.size(); i++) {
string output;
output << list[i].name << " = " << list[i].get();
if(list[i].desc != "") output << " # " << list[i].desc;
output << "\r\n";
fp.print(output);
}
fp.close();
return true;
} else {
return false;
}
}
};
}
#endif