Sha256: dcd0ca1f08fe6ed654473c071e887bdd18e1d9d95fba58595d6c3412486f2299
Contents?: true
Size: 1.35 KB
Versions: 16
Compression:
Stored size: 1.35 KB
Contents
// Copyright (c) 2019-2020 Dr. Colin Hirsch and Daniel Frey
// Please see LICENSE for license or visit https://github.com/taocpp/json/
#include <cstdio>
#include <iostream>
#include <tao/json.hpp>
namespace tao::json::events
{
struct printf_doubles
: public to_stream
{
using to_stream::to_stream;
void number( const double v )
{
next();
if( !std::isfinite( v ) ) {
// if this throws, consider using non_finite_to_* transformers
throw std::runtime_error( "non-finite double value invalid for JSON string representation" );
}
char buffer[ 32 ];
const std::size_t n = std::snprintf( buffer, sizeof( buffer ), "%0.2f", v );
os.write( buffer, n );
}
void number( const std::int64_t v )
{
to_stream::number( v );
}
void number( const std::uint64_t v )
{
to_stream::number( v );
}
};
} // namespace tao::json::events
int main( int argc, char** argv )
{
if( argc != 2 ) {
std::cerr << "usage: " << argv[ 0 ] << " file.json" << std::endl;
std::cerr << " parses the json file and writes it to stdout with '%0.2f' for doubles" << std::endl;
return 1;
}
tao::json::events::printf_doubles consumer( std::cout );
tao::json::events::from_file( consumer, argv[ 1 ] );
return 0;
}
Version data entries
16 entries across 16 versions & 1 rubygems