forked from mia/Aegisub
133 lines
2.9 KiB
C++
133 lines
2.9 KiB
C++
/**********************************************
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License: BSD
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Project Webpage: http://cajun-jsonapi.sourceforge.net/
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Author: Terry Caton
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***********************************************/
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#include "libaegisub/cajun/writer.h"
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#ifndef LAGI_PRE
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#include <iostream>
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#include <iomanip>
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#endif
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/*
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TODO:
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* better documentation
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* unicode character encoding
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*/
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namespace json
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{
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Writer::Writer(std::ostream& ostr) :
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m_ostr(ostr),
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m_nTabDepth(0)
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{}
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void Writer::Write(const Array& array)
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{
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if (array.empty())
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m_ostr << "[]";
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else
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{
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m_ostr << '[' << std::endl;
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++m_nTabDepth;
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Array::const_iterator it(array.begin()), itend(array.end());
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while (it != itend) {
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m_ostr << std::string(m_nTabDepth, '\t');
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Write(*it);
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if (++it != itend)
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m_ostr << ',';
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m_ostr << std::endl;
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}
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--m_nTabDepth;
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m_ostr << std::string(m_nTabDepth, '\t') << ']';
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}
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}
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void Writer::Write(const Object& object)
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{
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if (object.empty())
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m_ostr << "{}";
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else
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{
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m_ostr << '{' << std::endl;
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++m_nTabDepth;
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Object::const_iterator it(object.begin()), itend(object.end());
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while (it != itend) {
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m_ostr << std::string(m_nTabDepth, '\t') << '"' << it->first << "\" : ";
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Write(it->second);
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if (++it != itend)
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m_ostr << ',';
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m_ostr << std::endl;
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}
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--m_nTabDepth;
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m_ostr << std::string(m_nTabDepth, '\t') << '}';
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}
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}
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void Writer::Write(const Number& numberElement)
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{
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m_ostr << std::setprecision(20) << numberElement;
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}
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void Writer::Write(const Boolean& booleanElement)
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{
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m_ostr << (booleanElement ? "true" : "false");
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}
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void Writer::Write(const String& stringElement)
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{
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m_ostr << '"';
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const std::string& s = stringElement;
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std::string::const_iterator it(s.begin()), itend(s.end());
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for (; it != itend; ++it)
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{
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switch (*it)
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{
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case '"': m_ostr << "\\\""; break;
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case '\\': m_ostr << "\\\\"; break;
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case '\b': m_ostr << "\\b"; break;
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case '\f': m_ostr << "\\f"; break;
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case '\n': m_ostr << "\\n"; break;
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case '\r': m_ostr << "\\r"; break;
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case '\t': m_ostr << "\\t"; break;
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//case '\u': m_ostr << ""; break; ??
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default: m_ostr << *it; break;
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}
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}
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m_ostr << '"';
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}
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void Writer::Write(const Null& )
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{
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m_ostr << "null";
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}
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void Writer::Write(const UnknownElement& unknown)
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{
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unknown.Accept(*this);
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}
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void Writer::Visit(const Array& array) { Write(array); }
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void Writer::Visit(const Object& object) { Write(object); }
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void Writer::Visit(const Number& number) { Write(number); }
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void Writer::Visit(const String& string) { Write(string); }
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void Writer::Visit(const Boolean& boolean) { Write(boolean); }
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void Writer::Visit(const Null& null) { Write(null); }
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} // end namespace
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