#include "stdafx.h"

#include "json.h"

#include <rapidjson/filereadstream.h>

//#include "io/io.h"

namespace json {

//! Wrapper around istream for parsing with rapidjson
class istreamwrapper {
 public:
 typedef char Ch;
 istreamwrapper(std::istream& is) : is_(is) { } // NOLINT
 Ch Peek() const {
 int c = is_.peek();
 return c == std::char_traits<char>::eof() ? '0円' : (Ch)c;
 }
 Ch Take() {
 int c = is_.get();
 return c == std::char_traits<char>::eof() ? '0円' : (Ch)c;
 }
 size_t Tell() const { return (size_t)is_.tellg(); }
 Ch* PutBegin() { return 0; }
 void Put(Ch) { }
 void Flush() { }
 size_t PutEnd(Ch* c) { return 0; }
 private:
 istreamwrapper(const istreamwrapper&);
 istreamwrapper& operator=(const istreamwrapper&);
 std::istream& is_;
};

bool parseRapidJSONDocument(const std::string& file, rapidjson::Document* d) {
 FILE* pFile = fopen(file.c_str(), "rb");
 char buffer[65536];
 rapidjson::FileReadStream is(pFile, buffer, sizeof(buffer));
 d->ParseStream<0, rapidjson::UTF8<>, rapidjson::FileReadStream>(is);
 fclose(pFile);

 if (d->HasParseError()) {
 std::cerr << "Parse error reading " << file << std::endl
 << "Error code " << d->GetParseError() << " at " << d->GetErrorOffset() << std::endl;
 return false;
 } else {
 return true;
 }
}

bool parseRapidJSONString(const std::string& jsonString, rapidjson::Document* d) {
 d->Parse(jsonString.c_str());

 if (d->HasParseError()) {
 std::cerr << "Parse error parsing json string " << std::endl
 << "Error code " << d->GetParseError() << " at " << d->GetErrorOffset() << std::endl;
 return false;
 } else {
 return true;
 }
}

} // namespace json