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This commit is contained in:
lzwdgc 2024-04-02 12:21:03 +03:00
parent c2696d8ba7
commit 5cbb895bcf
1 changed files with 19 additions and 19 deletions
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38
src/common/db2.h
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@ -45,6 +45,16 @@ struct mem_stream {
auto &r = *(T *)p; auto &r = *(T *)p;
return r; return r;
} }
template <typename T>
auto operator=(const T &in) {
T &v = *this;
v = in;
return sizeof(T);
}
auto operator=(const std::string &in) {
*this += in;
return in.size() + 1;
}
void operator+=(const mem_stream &s) { void operator+=(const mem_stream &s) {
d.append_range(s.d); d.append_range(s.d);
} }
@ -63,6 +73,10 @@ struct mem_stream {
auto size() const { return d.size(); } auto size() const { return d.size(); }
}; };
decltype(auto) visit(auto &&var, auto &&...f) {
return ::std::visit(overload{FWD(f)...}, var);
}
struct db2 { struct db2 {
using char20 = char[0x20]; using char20 = char[0x20];
@ -145,7 +159,7 @@ struct db2 {
file(auto &&base) : fn{path{base} += "."s} { file(auto &&base) : fn{path{base} += "."s} {
fn += type_name<T>(); fn += type_name<T>();
f.open(fn, primitives::templates2::mmap_file<uint8_t>::rw{}); f.open(fn, primitives::templates2::mmap_file<uint8_t>::ro{});
data = (T *)f.p; data = (T *)f.p;
} }
}; };
@ -245,24 +259,10 @@ struct db2 {
i.offset = datv.size(); i.offset = datv.size();
for (auto &&[fn, fv] : fd) { for (auto &&[fn, fv] : fd) {
dat::field_value_base &_ = datv; dat::field_value_base &_ = datv;
auto sz = std::visit(overload{ auto sz = visit(fv,
[&](const int &v) { [&](const int &v) { return datv = v; },
int &i = datv; [&](const float &v) { return datv = v; },
i = v; [&](const std::string &v) { return datv = utf8_to_dbstr(v); });
return sizeof(int);
},
[&](const float &v) {
float &i = datv;
i = v;
return sizeof(float);
},
[&](const std::string &v) {
auto s = utf8_to_dbstr(v);
datv += s;
return s.size() + 1;
},
},
fv);
auto &v = datv.at<dat::field_value_base>(-(sizeof(dat::field_value_base) + sz)); auto &v = datv.at<dat::field_value_base>(-(sizeof(dat::field_value_base) + sz));
v.field_id = (int)fields[tn].find(fn)->second; v.field_id = (int)fields[tn].find(fn)->second;
v.size = sz; v.size = sz;