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/*
* Copyright (C) 2005-2012 Team XBMC
* http://www.xbmc.org
*
* This Program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This Program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with XBMC; see the file COPYING. If not, see
* <http://www.gnu.org/licenses/>.
*
*/
#include "JSONVariantParser.h"
yajl_callbacks CJSONVariantParser::callbacks = {
CJSONVariantParser::ParseNull,
CJSONVariantParser::ParseBoolean,
CJSONVariantParser::ParseInteger,
CJSONVariantParser::ParseDouble,
NULL,
CJSONVariantParser::ParseString,
CJSONVariantParser::ParseMapStart,
CJSONVariantParser::ParseMapKey,
CJSONVariantParser::ParseMapEnd,
CJSONVariantParser::ParseArrayStart,
CJSONVariantParser::ParseArrayEnd
};
CJSONVariantParser::CJSONVariantParser(IParseCallback *callback)
{
m_callback = callback;
#if YAJL_MAJOR == 2
m_handler = yajl_alloc(&callbacks, NULL, this);
yajl_config(m_handler, yajl_allow_comments, 1);
yajl_config(m_handler, yajl_dont_validate_strings, 0);
#else
yajl_parser_config cfg = { 1, 1 };
m_handler = yajl_alloc(&callbacks, &cfg, NULL, this);
#endif
m_status = ParseVariable;
}
CJSONVariantParser::~CJSONVariantParser()
{
#if YAJL_MAJOR == 2
yajl_complete_parse(m_handler);
#else
yajl_parse_complete(m_handler);
#endif
yajl_free(m_handler);
}
void CJSONVariantParser::push_buffer(const unsigned char *buffer, unsigned int length)
{
yajl_parse(m_handler, buffer, length);
}
CVariant CJSONVariantParser::Parse(const unsigned char *json, unsigned int length)
{
CSimpleParseCallback callback;
CJSONVariantParser parser(&callback);
parser.push_buffer(json, length);
return callback.GetOutput();
}
int CJSONVariantParser::ParseNull(void * ctx)
{
CJSONVariantParser *parser = (CJSONVariantParser *)ctx;
parser->PushObject(CVariant::VariantTypeNull);
parser->PopObject();
return 1;
}
int CJSONVariantParser::ParseBoolean(void * ctx, int boolean)
{
CJSONVariantParser *parser = (CJSONVariantParser *)ctx;
parser->PushObject(CVariant(boolean != 0));
parser->PopObject();
return 1;
}
#if YAJL_MAJOR ==2
int CJSONVariantParser::ParseInteger(void * ctx, long long integerVal)
#else
int CJSONVariantParser::ParseInteger(void * ctx, long integerVal)
#endif
{
CJSONVariantParser *parser = (CJSONVariantParser *)ctx;
parser->PushObject(CVariant((int64_t)integerVal));
parser->PopObject();
return 1;
}
int CJSONVariantParser::ParseDouble(void * ctx, double doubleVal)
{
CJSONVariantParser *parser = (CJSONVariantParser *)ctx;
parser->PushObject(CVariant((float)doubleVal));
parser->PopObject();
return 1;
}
#if YAJL_MAJOR == 2
int CJSONVariantParser::ParseString(void * ctx, const unsigned char * stringVal, size_t stringLen)
#else
int CJSONVariantParser::ParseString(void * ctx, const unsigned char * stringVal, unsigned int stringLen)
#endif
{
CJSONVariantParser *parser = (CJSONVariantParser *)ctx;
parser->PushObject(CVariant((const char *)stringVal, stringLen));
parser->PopObject();
return 1;
}
int CJSONVariantParser::ParseMapStart(void * ctx)
{
CJSONVariantParser *parser = (CJSONVariantParser *)ctx;
parser->PushObject(CVariant::VariantTypeObject);
return 1;
}
#if YAJL_MAJOR == 2
int CJSONVariantParser::ParseMapKey(void * ctx, const unsigned char * stringVal, size_t stringLen)
#else
int CJSONVariantParser::ParseMapKey(void * ctx, const unsigned char * stringVal, unsigned int stringLen)
#endif
{
CJSONVariantParser *parser = (CJSONVariantParser *)ctx;
parser->m_key = std::string((const char *)stringVal, 0, stringLen);
return 1;
}
int CJSONVariantParser::ParseMapEnd(void * ctx)
{
CJSONVariantParser *parser = (CJSONVariantParser *)ctx;
parser->PopObject();
return 1;
}
int CJSONVariantParser::ParseArrayStart(void * ctx)
{
CJSONVariantParser *parser = (CJSONVariantParser *)ctx;
parser->PushObject(CVariant::VariantTypeArray);
return 1;
}
int CJSONVariantParser::ParseArrayEnd(void * ctx)
{
CJSONVariantParser *parser = (CJSONVariantParser *)ctx;
parser->PopObject();
return 1;
}
void CJSONVariantParser::PushObject(CVariant variant)
{
if (m_status == ParseObject)
{
(*m_parse[m_parse.size() - 1])[m_key] = variant;
m_parse.push_back(&(*m_parse[m_parse.size() - 1])[m_key]);
}
else if (m_status == ParseArray)
{
CVariant *temp = m_parse[m_parse.size() - 1];
temp->push_back(variant);
m_parse.push_back(&(*temp)[temp->size() - 1]);
}
else if (m_parse.size() == 0)
{
m_parse.push_back(new CVariant(variant));
}
if (variant.isObject())
m_status = ParseObject;
else if (variant.isArray())
m_status = ParseArray;
else
m_status = ParseVariable;
}
void CJSONVariantParser::PopObject()
{
CVariant *variant = m_parse[m_parse.size() - 1];
m_parse.pop_back();
if (m_parse.size())
{
variant = m_parse[m_parse.size() - 1];
if (variant->isObject())
m_status = ParseObject;
else if (variant->isArray())
m_status = ParseArray;
else
m_status = ParseVariable;
}
else if (m_callback)
{
m_callback->onParsed(variant);
delete variant;
m_parse.clear();
m_status = ParseVariable;
}
}
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