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/*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* JsonWriter.cpp
* Serialize JSON data.
* Copyright (C) 2012 Simon Newton
*/
#include <string>
#include "ola/StringUtils.h"
#include "ola/stl/STLUtils.h"
#include "ola/web/JsonWriter.h"
namespace ola {
namespace web {
using std::ostream;
using std::ostringstream;
using std::string;
void JsonWriter::Write(ostream *output, const JsonValue &obj) {
JsonWriter writer(output);
obj.Accept(&writer);
}
string JsonWriter::AsString(const JsonValue &obj) {
ostringstream str;
JsonWriter writer(&str);
obj.Accept(&writer);
return str.str();
}
void JsonWriter::Visit(const JsonString &value) {
*m_output << '"' << EscapeString(EncodeString(value.Value())) << '"';
}
void JsonWriter::Visit(const JsonBool &value) {
*m_output << (value.Value() ? "true" : "false");
}
void JsonWriter::Visit(const JsonNull &) {
*m_output << "null";
}
void JsonWriter::Visit(const JsonRawValue &value) {
*m_output << value.Value();
}
void JsonWriter::Visit(const JsonObject &value) {
if (value.IsEmpty()) {
*m_output << "{}";
return;
}
string old_separator = m_separator;
m_separator = "";
m_indent += DEFAULT_INDENT;
*m_output << "{\n";
value.VisitProperties(this);
m_indent -= DEFAULT_INDENT;
*m_output << "\n" << string(m_indent, ' ');
*m_output << "}";
m_separator = old_separator;
}
void JsonWriter::Visit(const JsonArray &value) {
*m_output << "[";
string default_separator = ", ";
if (value.IsComplexType()) {
m_indent += DEFAULT_INDENT;
*m_output << "\n" << string(m_indent, ' ');
default_separator = ",\n";
default_separator.append(m_indent, ' ');
}
string separator;
for (unsigned int i = 0; i < value.Size(); i++) {
*m_output << separator;
value.ElementAt(i)->Accept(this);
separator = default_separator;
}
if (value.IsComplexType()) {
*m_output << "\n";
m_indent -= DEFAULT_INDENT;
*m_output << string(m_indent, ' ');
}
*m_output << "]";
}
void JsonWriter::Visit(const JsonUInt &value) {
*m_output << value.Value();
}
void JsonWriter::Visit(const JsonUInt64 &value) {
*m_output << value.Value();
}
void JsonWriter::Visit(const JsonInt &value) {
*m_output << value.Value();
}
void JsonWriter::Visit(const JsonInt64 &value) {
*m_output << value.Value();
}
void JsonWriter::Visit(const JsonDouble &value) {
*m_output << value.ToString();
}
void JsonWriter::VisitProperty(const string &property,
const JsonValue &value) {
*m_output << m_separator << string(m_indent, ' ') << "\""
<< EscapeString(property) << "\": ";
value.Accept(this);
m_separator = ",\n";
}
} // namespace web
} // namespace ola
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