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/**********************************************
License: BSD
Project Webpage: http://cajun-jsonapi.sourceforge.net/
Author: Terry Caton
***********************************************/
#include "writer.h"
#include <iostream>
#include <iomanip>
/*
TODO:
* better documentation
* unicode character encoding
*/
namespace json
{
inline void Writer::Write(const UnknownElement& elementRoot, std::ostream& ostr) { Write_i(elementRoot, ostr); }
inline void Writer::Write(const Object& object, std::ostream& ostr) { Write_i(object, ostr); }
inline void Writer::Write(const Array& array, std::ostream& ostr) { Write_i(array, ostr); }
inline void Writer::Write(const Number& number, std::ostream& ostr) { Write_i(number, ostr); }
inline void Writer::Write(const String& string, std::ostream& ostr) { Write_i(string, ostr); }
inline void Writer::Write(const Boolean& boolean, std::ostream& ostr) { Write_i(boolean, ostr); }
inline void Writer::Write(const Null& null, std::ostream& ostr) { Write_i(null, ostr); }
inline Writer::Writer(std::ostream& ostr) :
m_ostr(ostr),
m_nTabDepth(0)
{}
template <typename ElementTypeT>
void Writer::Write_i(const ElementTypeT& element, std::ostream& ostr)
{
Writer writer(ostr);
writer.Write_i(element);
ostr.flush(); // all done
}
inline void Writer::Write_i(const Array& array)
{
if (array.Empty())
m_ostr << "[]";
else
{
m_ostr << '[' << std::endl;
++m_nTabDepth;
Array::const_iterator it(array.Begin()),
itEnd(array.End());
while (it != itEnd) {
m_ostr << std::string(m_nTabDepth, '\t');
Write_i(*it);
if (++it != itEnd)
m_ostr << ',';
m_ostr << std::endl;
}
--m_nTabDepth;
m_ostr << std::string(m_nTabDepth, '\t') << ']';
}
}
inline void Writer::Write_i(const Object& object)
{
if (object.Empty())
m_ostr << "{}";
else
{
m_ostr << '{' << std::endl;
++m_nTabDepth;
Object::const_iterator it(object.Begin()),
itEnd(object.End());
while (it != itEnd) {
m_ostr << std::string(m_nTabDepth, '\t') << '"' << it->name << "\" : ";
Write_i(it->element);
if (++it != itEnd)
m_ostr << ',';
m_ostr << std::endl;
}
--m_nTabDepth;
m_ostr << std::string(m_nTabDepth, '\t') << '}';
}
}
inline void Writer::Write_i(const Number& numberElement)
{
m_ostr << std::setprecision(20) << numberElement.Value();
}
inline void Writer::Write_i(const Boolean& booleanElement)
{
m_ostr << (booleanElement.Value() ? "true" : "false");
}
inline void Writer::Write_i(const String& stringElement)
{
m_ostr << '"';
const std::string& s = stringElement.Value();
std::string::const_iterator it(s.begin()),
itEnd(s.end());
for (; it != itEnd; ++it)
{
switch (*it)
{
case '"': m_ostr << "\\\""; break;
case '\\': m_ostr << "\\\\"; break;
case '\b': m_ostr << "\\b"; break;
case '\f': m_ostr << "\\f"; break;
case '\n': m_ostr << "\\n"; break;
case '\r': m_ostr << "\\r"; break;
case '\t': m_ostr << "\\t"; break;
//case '\u': m_ostr << ""; break; ??
default: m_ostr << *it; break;
}
}
m_ostr << '"';
}
inline void Writer::Write_i(const Null& )
{
m_ostr << "null";
}
inline void Writer::Write_i(const UnknownElement& unknown)
{
unknown.Accept(*this);
}
inline void Writer::Visit(const Array& array) { Write_i(array); }
inline void Writer::Visit(const Object& object) { Write_i(object); }
inline void Writer::Visit(const Number& number) { Write_i(number); }
inline void Writer::Visit(const String& string) { Write_i(string); }
inline void Writer::Visit(const Boolean& boolean) { Write_i(boolean); }
inline void Writer::Visit(const Null& null) { Write_i(null); }
} // End namespace
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