fbstring phpSerialize(const folly::dynamic& d) {
if (d.isNull()) {
return "N;";
}
if (d.isBool()) {
return d.asBool() ? "b:1;" : "b:0;";
}
if (d.isInt()) {
return "i:" + d.asString() + ";";
}
if (d.isDouble()) {
return "d:" + d.asString() + ";";
}
if (d.isString()) {
auto str = d.asString();
return folly::to<fbstring>("s:", str.size(), ":\"", str, "\";");
}
if (d.isArray()) {
fbstring ret = folly::to<fbstring>("a:", d.size(), ":{");
int i = 0;
for (auto &v : d) {
ret += folly::to<fbstring>("i:", i, ";", phpSerialize(v));
}
return ret + "};";
}
if (d.isObject()) {
fbstring ret = folly::to<fbstring>("a:", d.size(), ":{");
int nextindex = 0;
for (auto &k : d.keys()) {
if (k.isNull()) {
ret += "i:0;";
if (nextindex <= 0) {
nextindex = 1;
}
} else if (k.isInt() || k.isDouble()) {
int i = k.asInt();
ret += folly::to<fbstring>("i:", i, ";");
if (nextindex <= i) {
nextindex = i + 1;
}
} else if (k.isString()) {
ret += folly::to<fbstring>("s:", k.size(), ":\"",
escapeCpp(k.asString()), "\";");
} else {
/* Should never be reached, but cover it to be safe */
ret += folly::to<fbstring>("i:", nextindex++, ";");
}
ret += phpSerialize(d[k]);
}
return ret + "};";
}
throw std::logic_error("Unhandled dynamic type in php serialization");
return "N;";
}
// Infer type from an actual value, e.g. 123, "foo", null, true, etc...
static DataType kindOfFromValue(const folly::dynamic& v) {
if (v.isNull()) {
return KindOfNull;
}
if (v.isBool()) {
return KindOfBoolean;
}
if (v.isInt()) {
return KindOfInt64;
}
if (v.isDouble()) {
return KindOfDouble;
}
if (v.isString()) {
return KindOfString;
}
if (v.isArray()) {
return KindOfArray;
}
if (v.isObject()) {
return KindOfObject;
}
return KindOfInvalid;
}