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#include <pch.hpp>
#include "jsonpp.h"
#include <glibmm/convert.h>
#include <ios>
namespace json {
class JsonSerialize : public boost::static_visitor<> {
public:
JsonSerialize(std::ostream & out, const std::string & encoding) :
o(out),
e(encoding) {
}
void operator()(const String & s) const {
serializeString(s, o, e);
}
void operator()(const Number & s) const {
serializeNumber(s, o, e);
}
void operator()(const Array & s) const {
serializeArray(s, o, e);
}
void operator()(const Object & s) const {
serializeObject(s, o, e);
}
void operator()(const Null & s) const {
serializeNull(s, o, e);
}
void operator()(const Boolean & s) const {
serializeBoolean(s, o, e);
}
private:
std::ostream & o;
std::string e;
};
void serializeObject(const Object & o, std::ostream & s, const std::string & renc) {
std::string enc(renc == "utf-8" ? std::string() : renc);
s << std::boolalpha;
s << std::fixed;
s << '{';
for (const Object::value_type & v : o) {
if (&v != &*o.begin()) {
s << ',';
}
serializeString(v.first, s, enc);
s << ':';
serializeValue(*v.second, s, enc);
}
s << '}';
}
void serializeValue(const Value & v, std::ostream & s, const std::string & enc) {
boost::apply_visitor(JsonSerialize(s, enc), v);
}
void serializeArray(const Array & a, std::ostream & s, const std::string & enc) {
s << '[';
for (const Array::value_type & v : a) {
if (&v != &*a.begin()) {
s << ',';
}
serializeValue(*v, s, enc);
}
s << ']';
}
void serializeString(const String & str, std::ostream & s) {
s << '"';
for (auto i = str.begin(); i != str.end(); ) {
auto start = i;
while (i != str.end() && *i >= 32 && *i != '/' && *i != '"' && *i != '\\') {
i++;
}
if (start == str.begin() && i == str.end()) {
s << str.raw();
break;
}
else if (start != i) {
s << Glib::ustring(start, i).raw();
}
while (i != str.end() && (*i < 32 || *i == '/' || *i == '"' || *i == '\\')) {
gunichar c = *i;
switch (c) {
case '\f':
s << "\\f";
break;
case '\t':
s << "\\t";
break;
case '\n':
s << "\\n";
break;
case '\b':
s << "\\b";
break;
case '\r':
s << "\\r";
break;
case '/':
s << "\\/";
break;
case '\\':
s << "\\\\";
break;
case '"':
s << "\\\"";
break;
default:
char buf[7];
snprintf(buf, sizeof(buf), "\\u%04x", c);
s << buf;
break;
}
i++;
}
}
s << '"';
}
void serializeString(const String & str, std::ostream & o, const std::string & encoding) {
if (!encoding.empty()) {
std::stringstream s;
serializeString(str, s);
o << Glib::convert(s.str(), encoding, "utf-8");
}
else {
serializeString(str, o);
}
}
void serializeNumber(const Number & n, std::ostream & s, const std::string & ) {
s.unsetf(std::ios::fixed);
s << n;
}
void serializeBoolean(const Boolean & b, std::ostream & s, const std::string & ) {
s << (b ? "true" : "false");
}
void serializeNull(const Null &, std::ostream & s, const std::string & ) {
s << "null";
}
Glib::ustring serializeObject(const Object & o, const std::string & enc) {
std::stringstream out;
serializeObject(o, out, enc);
return out.str();
}
}
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