mirror of https://github.com/vitalif/grive2
120 lines
2.4 KiB
C++
120 lines
2.4 KiB
C++
/*
|
|
grive: an GPL program to sync a local directory with Google Drive
|
|
Copyright (C) 2013 Wan Wai Ho
|
|
|
|
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 version 2
|
|
of the License.
|
|
|
|
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 this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
|
MA 02110-1301, USA.
|
|
*/
|
|
|
|
#include "JsonWriter.hh"
|
|
#include "util/StringStream.hh"
|
|
|
|
#include <yajl/yajl_gen.h>
|
|
|
|
#include <cassert>
|
|
|
|
namespace gr {
|
|
|
|
struct JsonWriter::Impl
|
|
{
|
|
yajl_gen gen ;
|
|
DataStream *out ;
|
|
} ;
|
|
|
|
JsonWriter::JsonWriter( DataStream *out ) :
|
|
m_impl( new Impl )
|
|
{
|
|
assert( out != 0 ) ;
|
|
|
|
m_impl->out = out ;
|
|
m_impl->gen = yajl_gen_alloc(0) ;
|
|
yajl_gen_config( m_impl->gen, yajl_gen_print_callback, &JsonWriter::WriteCallback, this ) ;
|
|
}
|
|
|
|
JsonWriter::~JsonWriter()
|
|
{
|
|
yajl_gen_free( m_impl->gen ) ;
|
|
}
|
|
|
|
void JsonWriter::Visit( long long t )
|
|
{
|
|
yajl_gen_integer( m_impl->gen, t ) ;
|
|
}
|
|
|
|
void JsonWriter::Visit( double t )
|
|
{
|
|
yajl_gen_double( m_impl->gen, t ) ;
|
|
}
|
|
|
|
void JsonWriter::Visit( const std::string& t )
|
|
{
|
|
yajl_gen_string( m_impl->gen,
|
|
reinterpret_cast<const unsigned char*>(t.c_str()), t.size() ) ;
|
|
}
|
|
|
|
void JsonWriter::Visit( bool t )
|
|
{
|
|
yajl_gen_bool( m_impl->gen, t ) ;
|
|
}
|
|
|
|
void JsonWriter::VisitNull()
|
|
{
|
|
yajl_gen_null( m_impl->gen ) ;
|
|
}
|
|
|
|
void JsonWriter::StartArray()
|
|
{
|
|
yajl_gen_array_open( m_impl->gen ) ;
|
|
}
|
|
|
|
void JsonWriter::EndArray()
|
|
{
|
|
yajl_gen_array_close( m_impl->gen ) ;
|
|
}
|
|
|
|
void JsonWriter::StartObject()
|
|
{
|
|
yajl_gen_map_open( m_impl->gen ) ;
|
|
}
|
|
|
|
void JsonWriter::VisitKey( const std::string& t )
|
|
{
|
|
Visit(t) ;
|
|
}
|
|
|
|
void JsonWriter::EndObject()
|
|
{
|
|
yajl_gen_map_close( m_impl->gen ) ;
|
|
}
|
|
|
|
void JsonWriter::WriteCallback( void *ctx, const char *str, std::size_t size )
|
|
{
|
|
JsonWriter *pthis = reinterpret_cast<JsonWriter*>(ctx) ;
|
|
assert( pthis != 0 ) ;
|
|
assert( pthis->m_impl->out != 0 ) ;
|
|
|
|
pthis->m_impl->out->Write( str, size ) ;
|
|
}
|
|
|
|
std::string WriteJson( const Val& val )
|
|
{
|
|
StringStream ss ;
|
|
JsonWriter wr( &ss ) ;
|
|
val.Visit( &wr ) ;
|
|
return ss.Str() ;
|
|
}
|
|
|
|
} // end of namespace
|