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JSON Spirit library from http://www.codeproject.com/KB/recipes/JSON_Spirit.aspx, MIT license

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The MIT License
Copyright (c) 2007 - 2009 John W. Wilkinson
Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use,
copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following
conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.

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#ifndef JSON_SPIRIT
#define JSON_SPIRIT
// Copyright John W. Wilkinson 2007 - 2009.
// Distributed under the MIT License, see accompanying file LICENSE.txt
// json spirit version 4.03
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
#include "json_spirit_value.h"
#include "json_spirit_reader.h"
#include "json_spirit_writer.h"
#include "json_spirit_utils.h"
#endif

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#ifndef JSON_SPIRIT_ERROR_POSITION
#define JSON_SPIRIT_ERROR_POSITION
// Copyright John W. Wilkinson 2007 - 2009.
// Distributed under the MIT License, see accompanying file LICENSE.txt
// json spirit version 4.03
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
#include <string>
namespace json_spirit
{
// An Error_position exception is thrown by the "read_or_throw" functions below on finding an error.
// Note the "read_or_throw" functions are around 3 times slower than the standard functions "read"
// functions that return a bool.
//
struct Error_position
{
Error_position();
Error_position( unsigned int line, unsigned int column, const std::string& reason );
bool operator==( const Error_position& lhs ) const;
unsigned int line_;
unsigned int column_;
std::string reason_;
};
inline Error_position::Error_position()
: line_( 0 )
, column_( 0 )
{
}
inline Error_position::Error_position( unsigned int line, unsigned int column, const std::string& reason )
: line_( line )
, column_( column )
, reason_( reason )
{
}
inline bool Error_position::operator==( const Error_position& lhs ) const
{
if( this == &lhs ) return true;
return ( reason_ == lhs.reason_ ) &&
( line_ == lhs.line_ ) &&
( column_ == lhs.column_ );
}
}
#endif

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// Copyright John W. Wilkinson 2007 - 2009.
// Distributed under the MIT License, see accompanying file LICENSE.txt
// json spirit version 4.03
#include "json_spirit_reader.h"
#include "json_spirit_reader_template.h"
using namespace json_spirit;
bool json_spirit::read( const std::string& s, Value& value )
{
return read_string( s, value );
}
void json_spirit::read_or_throw( const std::string& s, Value& value )
{
read_string_or_throw( s, value );
}
bool json_spirit::read( std::istream& is, Value& value )
{
return read_stream( is, value );
}
void json_spirit::read_or_throw( std::istream& is, Value& value )
{
read_stream_or_throw( is, value );
}
bool json_spirit::read( std::string::const_iterator& begin, std::string::const_iterator end, Value& value )
{
return read_range( begin, end, value );
}
void json_spirit::read_or_throw( std::string::const_iterator& begin, std::string::const_iterator end, Value& value )
{
begin = read_range_or_throw( begin, end, value );
}
#ifndef BOOST_NO_STD_WSTRING
bool json_spirit::read( const std::wstring& s, wValue& value )
{
return read_string( s, value );
}
void json_spirit::read_or_throw( const std::wstring& s, wValue& value )
{
read_string_or_throw( s, value );
}
bool json_spirit::read( std::wistream& is, wValue& value )
{
return read_stream( is, value );
}
void json_spirit::read_or_throw( std::wistream& is, wValue& value )
{
read_stream_or_throw( is, value );
}
bool json_spirit::read( std::wstring::const_iterator& begin, std::wstring::const_iterator end, wValue& value )
{
return read_range( begin, end, value );
}
void json_spirit::read_or_throw( std::wstring::const_iterator& begin, std::wstring::const_iterator end, wValue& value )
{
begin = read_range_or_throw( begin, end, value );
}
#endif
bool json_spirit::read( const std::string& s, mValue& value )
{
return read_string( s, value );
}
void json_spirit::read_or_throw( const std::string& s, mValue& value )
{
read_string_or_throw( s, value );
}
bool json_spirit::read( std::istream& is, mValue& value )
{
return read_stream( is, value );
}
void json_spirit::read_or_throw( std::istream& is, mValue& value )
{
read_stream_or_throw( is, value );
}
bool json_spirit::read( std::string::const_iterator& begin, std::string::const_iterator end, mValue& value )
{
return read_range( begin, end, value );
}
void json_spirit::read_or_throw( std::string::const_iterator& begin, std::string::const_iterator end, mValue& value )
{
begin = read_range_or_throw( begin, end, value );
}
#ifndef BOOST_NO_STD_WSTRING
bool json_spirit::read( const std::wstring& s, wmValue& value )
{
return read_string( s, value );
}
void json_spirit::read_or_throw( const std::wstring& s, wmValue& value )
{
read_string_or_throw( s, value );
}
bool json_spirit::read( std::wistream& is, wmValue& value )
{
return read_stream( is, value );
}
void json_spirit::read_or_throw( std::wistream& is, wmValue& value )
{
read_stream_or_throw( is, value );
}
bool json_spirit::read( std::wstring::const_iterator& begin, std::wstring::const_iterator end, wmValue& value )
{
return read_range( begin, end, value );
}
void json_spirit::read_or_throw( std::wstring::const_iterator& begin, std::wstring::const_iterator end, wmValue& value )
{
begin = read_range_or_throw( begin, end, value );
}
#endif

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#ifndef JSON_SPIRIT_READER
#define JSON_SPIRIT_READER
// Copyright John W. Wilkinson 2007 - 2009.
// Distributed under the MIT License, see accompanying file LICENSE.txt
// json spirit version 4.03
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
#include "json_spirit_value.h"
#include "json_spirit_error_position.h"
#include <iostream>
namespace json_spirit
{
// functions to reads a JSON values
bool read( const std::string& s, Value& value );
bool read( std::istream& is, Value& value );
bool read( std::string::const_iterator& begin, std::string::const_iterator end, Value& value );
void read_or_throw( const std::string& s, Value& value );
void read_or_throw( std::istream& is, Value& value );
void read_or_throw( std::string::const_iterator& begin, std::string::const_iterator end, Value& value );
#ifndef BOOST_NO_STD_WSTRING
bool read( const std::wstring& s, wValue& value );
bool read( std::wistream& is, wValue& value );
bool read( std::wstring::const_iterator& begin, std::wstring::const_iterator end, wValue& value );
void read_or_throw( const std::wstring& s, wValue& value );
void read_or_throw( std::wistream& is, wValue& value );
void read_or_throw( std::wstring::const_iterator& begin, std::wstring::const_iterator end, wValue& value );
#endif
bool read( const std::string& s, mValue& value );
bool read( std::istream& is, mValue& value );
bool read( std::string::const_iterator& begin, std::string::const_iterator end, mValue& value );
void read_or_throw( const std::string& s, mValue& value );
void read_or_throw( std::istream& is, mValue& value );
void read_or_throw( std::string::const_iterator& begin, std::string::const_iterator end, mValue& value );
#ifndef BOOST_NO_STD_WSTRING
bool read( const std::wstring& s, wmValue& value );
bool read( std::wistream& is, wmValue& value );
bool read( std::wstring::const_iterator& begin, std::wstring::const_iterator end, wmValue& value );
void read_or_throw( const std::wstring& s, wmValue& value );
void read_or_throw( std::wistream& is, wmValue& value );
void read_or_throw( std::wstring::const_iterator& begin, std::wstring::const_iterator end, wmValue& value );
#endif
}
#endif

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#ifndef JSON_SPIRIT_READER_TEMPLATE
#define JSON_SPIRIT_READER_TEMPLATE
// Copyright John W. Wilkinson 2007 - 2009.
// Distributed under the MIT License, see accompanying file LICENSE.txt
// json spirit version 4.03
#include "json_spirit_value.h"
#include "json_spirit_error_position.h"
//#define BOOST_SPIRIT_THREADSAFE // uncomment for multithreaded use, requires linking to boost.thread
#include <boost/bind.hpp>
#include <boost/function.hpp>
#include <boost/version.hpp>
#if BOOST_VERSION >= 103800
#include <boost/spirit/include/classic_core.hpp>
#include <boost/spirit/include/classic_confix.hpp>
#include <boost/spirit/include/classic_escape_char.hpp>
#include <boost/spirit/include/classic_multi_pass.hpp>
#include <boost/spirit/include/classic_position_iterator.hpp>
#define spirit_namespace boost::spirit::classic
#else
#include <boost/spirit/core.hpp>
#include <boost/spirit/utility/confix.hpp>
#include <boost/spirit/utility/escape_char.hpp>
#include <boost/spirit/iterator/multi_pass.hpp>
#include <boost/spirit/iterator/position_iterator.hpp>
#define spirit_namespace boost::spirit
#endif
namespace json_spirit
{
const spirit_namespace::int_parser < boost::int64_t > int64_p = spirit_namespace::int_parser < boost::int64_t >();
const spirit_namespace::uint_parser< boost::uint64_t > uint64_p = spirit_namespace::uint_parser< boost::uint64_t >();
template< class Iter_type >
bool is_eq( Iter_type first, Iter_type last, const char* c_str )
{
for( Iter_type i = first; i != last; ++i, ++c_str )
{
if( *c_str == 0 ) return false;
if( *i != *c_str ) return false;
}
return true;
}
template< class Char_type >
Char_type hex_to_num( const Char_type c )
{
if( ( c >= '0' ) && ( c <= '9' ) ) return c - '0';
if( ( c >= 'a' ) && ( c <= 'f' ) ) return c - 'a' + 10;
if( ( c >= 'A' ) && ( c <= 'F' ) ) return c - 'A' + 10;
return 0;
}
template< class Char_type, class Iter_type >
Char_type hex_str_to_char( Iter_type& begin )
{
const Char_type c1( *( ++begin ) );
const Char_type c2( *( ++begin ) );
return ( hex_to_num( c1 ) << 4 ) + hex_to_num( c2 );
}
template< class Char_type, class Iter_type >
Char_type unicode_str_to_char( Iter_type& begin )
{
const Char_type c1( *( ++begin ) );
const Char_type c2( *( ++begin ) );
const Char_type c3( *( ++begin ) );
const Char_type c4( *( ++begin ) );
return ( hex_to_num( c1 ) << 12 ) +
( hex_to_num( c2 ) << 8 ) +
( hex_to_num( c3 ) << 4 ) +
hex_to_num( c4 );
}
template< class String_type >
void append_esc_char_and_incr_iter( String_type& s,
typename String_type::const_iterator& begin,
typename String_type::const_iterator end )
{
typedef typename String_type::value_type Char_type;
const Char_type c2( *begin );
switch( c2 )
{
case 't': s += '\t'; break;
case 'b': s += '\b'; break;
case 'f': s += '\f'; break;
case 'n': s += '\n'; break;
case 'r': s += '\r'; break;
case '\\': s += '\\'; break;
case '/': s += '/'; break;
case '"': s += '"'; break;
case 'x':
{
if( end - begin >= 3 ) // expecting "xHH..."
{
s += hex_str_to_char< Char_type >( begin );
}
break;
}
case 'u':
{
if( end - begin >= 5 ) // expecting "uHHHH..."
{
s += unicode_str_to_char< Char_type >( begin );
}
break;
}
}
}
template< class String_type >
String_type substitute_esc_chars( typename String_type::const_iterator begin,
typename String_type::const_iterator end )
{
typedef typename String_type::const_iterator Iter_type;
if( end - begin < 2 ) return String_type( begin, end );
String_type result;
result.reserve( end - begin );
const Iter_type end_minus_1( end - 1 );
Iter_type substr_start = begin;
Iter_type i = begin;
for( ; i < end_minus_1; ++i )
{
if( *i == '\\' )
{
result.append( substr_start, i );
++i; // skip the '\'
append_esc_char_and_incr_iter( result, i, end );
substr_start = i + 1;
}
}
result.append( substr_start, end );
return result;
}
template< class String_type >
String_type get_str_( typename String_type::const_iterator begin,
typename String_type::const_iterator end )
{
assert( end - begin >= 2 );
typedef typename String_type::const_iterator Iter_type;
Iter_type str_without_quotes( ++begin );
Iter_type end_without_quotes( --end );
return substitute_esc_chars< String_type >( str_without_quotes, end_without_quotes );
}
inline std::string get_str( std::string::const_iterator begin, std::string::const_iterator end )
{
return get_str_< std::string >( begin, end );
}
inline std::wstring get_str( std::wstring::const_iterator begin, std::wstring::const_iterator end )
{
return get_str_< std::wstring >( begin, end );
}
template< class String_type, class Iter_type >
String_type get_str( Iter_type begin, Iter_type end )
{
const String_type tmp( begin, end ); // convert multipass iterators to string iterators
return get_str( tmp.begin(), tmp.end() );
}
// this class's methods get called by the spirit parse resulting
// in the creation of a JSON object or array
//
// NB Iter_type could be a std::string iterator, wstring iterator, a position iterator or a multipass iterator
//
template< class Value_type, class Iter_type >
class Semantic_actions
{
public:
typedef typename Value_type::Config_type Config_type;
typedef typename Config_type::String_type String_type;
typedef typename Config_type::Object_type Object_type;
typedef typename Config_type::Array_type Array_type;
typedef typename String_type::value_type Char_type;
Semantic_actions( Value_type& value )
: value_( value )
, current_p_( 0 )
{
}
void begin_obj( Char_type c )
{
assert( c == '{' );
begin_compound< Object_type >();
}
void end_obj( Char_type c )
{
assert( c == '}' );
end_compound();
}
void begin_array( Char_type c )
{
assert( c == '[' );
begin_compound< Array_type >();
}
void end_array( Char_type c )
{
assert( c == ']' );
end_compound();
}
void new_name( Iter_type begin, Iter_type end )
{
assert( current_p_->type() == obj_type );
name_ = get_str< String_type >( begin, end );
}
void new_str( Iter_type begin, Iter_type end )
{
add_to_current( get_str< String_type >( begin, end ) );
}
void new_true( Iter_type begin, Iter_type end )
{
assert( is_eq( begin, end, "true" ) );
add_to_current( true );
}
void new_false( Iter_type begin, Iter_type end )
{
assert( is_eq( begin, end, "false" ) );
add_to_current( false );
}
void new_null( Iter_type begin, Iter_type end )
{
assert( is_eq( begin, end, "null" ) );
add_to_current( Value_type() );
}
void new_int( boost::int64_t i )
{
add_to_current( i );
}
void new_uint64( boost::uint64_t ui )
{
add_to_current( ui );
}
void new_real( double d )
{
add_to_current( d );
}
private:
Semantic_actions& operator=( const Semantic_actions& );
// to prevent "assignment operator could not be generated" warning
Value_type* add_first( const Value_type& value )
{
assert( current_p_ == 0 );
value_ = value;
current_p_ = &value_;
return current_p_;
}
template< class Array_or_obj >
void begin_compound()
{
if( current_p_ == 0 )
{
add_first( Array_or_obj() );
}
else
{
stack_.push_back( current_p_ );
Array_or_obj new_array_or_obj; // avoid copy by building new array or object in place
current_p_ = add_to_current( new_array_or_obj );
}
}
void end_compound()
{
if( current_p_ != &value_ )
{
current_p_ = stack_.back();
stack_.pop_back();
}
}
Value_type* add_to_current( const Value_type& value )
{
if( current_p_ == 0 )
{
return add_first( value );
}
else if( current_p_->type() == array_type )
{
current_p_->get_array().push_back( value );
return &current_p_->get_array().back();
}
assert( current_p_->type() == obj_type );
return &Config_type::add( current_p_->get_obj(), name_, value );
}
Value_type& value_; // this is the object or array that is being created
Value_type* current_p_; // the child object or array that is currently being constructed
std::vector< Value_type* > stack_; // previous child objects and arrays
String_type name_; // of current name/value pair
};
template< typename Iter_type >
void throw_error( spirit_namespace::position_iterator< Iter_type > i, const std::string& reason )
{
throw Error_position( i.get_position().line, i.get_position().column, reason );
}
template< typename Iter_type >
void throw_error( Iter_type i, const std::string& reason )
{
throw reason;
}
// the spirit grammer
//
template< class Value_type, class Iter_type >
class Json_grammer : public spirit_namespace::grammar< Json_grammer< Value_type, Iter_type > >
{
public:
typedef Semantic_actions< Value_type, Iter_type > Semantic_actions_t;
Json_grammer( Semantic_actions_t& semantic_actions )
: actions_( semantic_actions )
{
}
static void throw_not_value( Iter_type begin, Iter_type end )
{
throw_error( begin, "not a value" );
}
static void throw_not_array( Iter_type begin, Iter_type end )
{
throw_error( begin, "not an array" );
}
static void throw_not_object( Iter_type begin, Iter_type end )
{
throw_error( begin, "not an object" );
}
static void throw_not_pair( Iter_type begin, Iter_type end )
{
throw_error( begin, "not a pair" );
}
static void throw_not_colon( Iter_type begin, Iter_type end )
{
throw_error( begin, "no colon in pair" );
}
static void throw_not_string( Iter_type begin, Iter_type end )
{
throw_error( begin, "not a string" );
}
template< typename ScannerT >
class definition
{
public:
definition( const Json_grammer& self )
{
using namespace spirit_namespace;
typedef typename Value_type::String_type::value_type Char_type;
// first we convert the semantic action class methods to functors with the
// parameter signature expected by spirit
typedef boost::function< void( Char_type ) > Char_action;
typedef boost::function< void( Iter_type, Iter_type ) > Str_action;
typedef boost::function< void( double ) > Real_action;
typedef boost::function< void( boost::int64_t ) > Int_action;
typedef boost::function< void( boost::uint64_t ) > Uint64_action;
Char_action begin_obj ( boost::bind( &Semantic_actions_t::begin_obj, &self.actions_, _1 ) );
Char_action end_obj ( boost::bind( &Semantic_actions_t::end_obj, &self.actions_, _1 ) );
Char_action begin_array( boost::bind( &Semantic_actions_t::begin_array, &self.actions_, _1 ) );
Char_action end_array ( boost::bind( &Semantic_actions_t::end_array, &self.actions_, _1 ) );
Str_action new_name ( boost::bind( &Semantic_actions_t::new_name, &self.actions_, _1, _2 ) );
Str_action new_str ( boost::bind( &Semantic_actions_t::new_str, &self.actions_, _1, _2 ) );
Str_action new_true ( boost::bind( &Semantic_actions_t::new_true, &self.actions_, _1, _2 ) );
Str_action new_false ( boost::bind( &Semantic_actions_t::new_false, &self.actions_, _1, _2 ) );
Str_action new_null ( boost::bind( &Semantic_actions_t::new_null, &self.actions_, _1, _2 ) );
Real_action new_real ( boost::bind( &Semantic_actions_t::new_real, &self.actions_, _1 ) );
Int_action new_int ( boost::bind( &Semantic_actions_t::new_int, &self.actions_, _1 ) );
Uint64_action new_uint64 ( boost::bind( &Semantic_actions_t::new_uint64, &self.actions_, _1 ) );
// actual grammer
json_
= value_ | eps_p[ &throw_not_value ]
;
value_
= string_[ new_str ]
| number_
| object_
| array_
| str_p( "true" ) [ new_true ]
| str_p( "false" )[ new_false ]
| str_p( "null" ) [ new_null ]
;
object_
= ch_p('{')[ begin_obj ]
>> !members_
>> ( ch_p('}')[ end_obj ] | eps_p[ &throw_not_object ] )
;
members_
= pair_ >> *( ',' >> pair_ )
;
pair_
= string_[ new_name ]
>> ( ':' | eps_p[ &throw_not_colon ] )
>> ( value_ | eps_p[ &throw_not_value ] )
;
array_
= ch_p('[')[ begin_array ]
>> !elements_
>> ( ch_p(']')[ end_array ] | eps_p[ &throw_not_array ] )
;
elements_
= value_ >> *( ',' >> value_ )
;
string_
= lexeme_d // this causes white space inside a string to be retained
[
confix_p
(
'"',
*lex_escape_ch_p,
'"'
)
]
;
number_
= strict_real_p[ new_real ]
| int64_p [ new_int ]
| uint64_p [ new_uint64 ]
;
}
spirit_namespace::rule< ScannerT > json_, object_, members_, pair_, array_, elements_, value_, string_, number_;
const spirit_namespace::rule< ScannerT >& start() const { return json_; }
};
private:
Json_grammer& operator=( const Json_grammer& ); // to prevent "assignment operator could not be generated" warning
Semantic_actions_t& actions_;
};
template< class Iter_type, class Value_type >
Iter_type read_range_or_throw( Iter_type begin, Iter_type end, Value_type& value )
{
Semantic_actions< Value_type, Iter_type > semantic_actions( value );
const spirit_namespace::parse_info< Iter_type > info =
spirit_namespace::parse( begin, end,
Json_grammer< Value_type, Iter_type >( semantic_actions ),
spirit_namespace::space_p );
if( !info.hit )
{
assert( false ); // in theory exception should already have been thrown
throw_error( info.stop, "error" );
}
return info.stop;
}
template< class Iter_type, class Value_type >
void add_posn_iter_and_read_range_or_throw( Iter_type begin, Iter_type end, Value_type& value )
{
typedef spirit_namespace::position_iterator< Iter_type > Posn_iter_t;
const Posn_iter_t posn_begin( begin, end );
const Posn_iter_t posn_end( end, end );
read_range_or_throw( posn_begin, posn_end, value );
}
template< class Iter_type, class Value_type >
bool read_range( Iter_type& begin, Iter_type end, Value_type& value )
{
try
{
begin = read_range_or_throw( begin, end, value );
return true;
}
catch( ... )
{
return false;
}
}
template< class String_type, class Value_type >
void read_string_or_throw( const String_type& s, Value_type& value )
{
add_posn_iter_and_read_range_or_throw( s.begin(), s.end(), value );
}
template< class String_type, class Value_type >
bool read_string( const String_type& s, Value_type& value )
{
typename String_type::const_iterator begin = s.begin();
return read_range( begin, s.end(), value );
}
template< class Istream_type >
struct Multi_pass_iters
{
typedef typename Istream_type::char_type Char_type;
typedef std::istream_iterator< Char_type, Char_type > istream_iter;
typedef spirit_namespace::multi_pass< istream_iter > Mp_iter;
Multi_pass_iters( Istream_type& is )
{
is.unsetf( std::ios::skipws );
begin_ = spirit_namespace::make_multi_pass( istream_iter( is ) );
end_ = spirit_namespace::make_multi_pass( istream_iter() );
}
Mp_iter begin_;
Mp_iter end_;
};
template< class Istream_type, class Value_type >
bool read_stream( Istream_type& is, Value_type& value )
{
Multi_pass_iters< Istream_type > mp_iters( is );
return read_range( mp_iters.begin_, mp_iters.end_, value );
}
template< class Istream_type, class Value_type >
void read_stream_or_throw( Istream_type& is, Value_type& value )
{
const Multi_pass_iters< Istream_type > mp_iters( is );
add_posn_iter_and_read_range_or_throw( mp_iters.begin_, mp_iters.end_, value );
}
}
#endif

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#ifndef JSON_SPIRIT_READ_STREAM
#define JSON_SPIRIT_READ_STREAM
// Copyright John W. Wilkinson 2007 - 2009.
// Distributed under the MIT License, see accompanying file LICENSE.txt
// json spirit version 4.03
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
#include "json_spirit_reader_template.h"
namespace json_spirit
{
// these classes allows you to read multiple top level contiguous values from a stream,
// the normal stream read functions have a bug that prevent multiple top level values
// from being read unless they are separated by spaces
template< class Istream_type, class Value_type >
class Stream_reader
{
public:
Stream_reader( Istream_type& is )
: iters_( is )
{
}
bool read_next( Value_type& value )
{
return read_range( iters_.begin_, iters_.end_, value );
}
private:
typedef Multi_pass_iters< Istream_type > Mp_iters;
Mp_iters iters_;
};
template< class Istream_type, class Value_type >
class Stream_reader_thrower
{
public:
Stream_reader_thrower( Istream_type& is )
: iters_( is )
, posn_begin_( iters_.begin_, iters_.end_ )
, posn_end_( iters_.end_, iters_.end_ )
{
}
void read_next( Value_type& value )
{
posn_begin_ = read_range_or_throw( posn_begin_, posn_end_, value );
}
private:
typedef Multi_pass_iters< Istream_type > Mp_iters;
typedef spirit_namespace::position_iterator< typename Mp_iters::Mp_iter > Posn_iter_t;
Mp_iters iters_;
Posn_iter_t posn_begin_, posn_end_;
};
}
#endif

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#ifndef JSON_SPIRIT_UTILS
#define JSON_SPIRIT_UTILS
// Copyright John W. Wilkinson 2007 - 2009.
// Distributed under the MIT License, see accompanying file LICENSE.txt
// json spirit version 4.03
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
#include "json_spirit_value.h"
#include <map>
namespace json_spirit
{
template< class Obj_t, class Map_t >
void obj_to_map( const Obj_t& obj, Map_t& mp_obj )
{
mp_obj.clear();
for( typename Obj_t::const_iterator i = obj.begin(); i != obj.end(); ++i )
{
mp_obj[ i->name_ ] = i->value_;
}
}
template< class Obj_t, class Map_t >
void map_to_obj( const Map_t& mp_obj, Obj_t& obj )
{
obj.clear();
for( typename Map_t::const_iterator i = mp_obj.begin(); i != mp_obj.end(); ++i )
{
obj.push_back( typename Obj_t::value_type( i->first, i->second ) );
}
}
typedef std::map< std::string, Value > Mapped_obj;
#ifndef BOOST_NO_STD_WSTRING
typedef std::map< std::wstring, wValue > wMapped_obj;
#endif
template< class Object_type, class String_type >
const typename Object_type::value_type::Value_type& find_value( const Object_type& obj, const String_type& name )
{
for( typename Object_type::const_iterator i = obj.begin(); i != obj.end(); ++i )
{
if( i->name_ == name )
{
return i->value_;
}
}
return Object_type::value_type::Value_type::null;
}
}
#endif

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/* Copyright (c) 2007 John W Wilkinson
This source code can be used for any purpose as long as
this comment is retained. */
// json spirit version 2.00
#include "json_spirit_value.h"

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#ifndef JSON_SPIRIT_VALUE
#define JSON_SPIRIT_VALUE
// Copyright John W. Wilkinson 2007 - 2009.
// Distributed under the MIT License, see accompanying file LICENSE.txt
// json spirit version 4.03
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
#include <vector>
#include <map>
#include <string>
#include <cassert>
#include <sstream>
#include <stdexcept>
#include <boost/config.hpp>
#include <boost/cstdint.hpp>
#include <boost/shared_ptr.hpp>
#include <boost/variant.hpp>
namespace json_spirit
{
enum Value_type{ obj_type, array_type, str_type, bool_type, int_type, real_type, null_type };
template< class Config > // Config determines whether the value uses std::string or std::wstring and
// whether JSON Objects are represented as vectors or maps
class Value_impl
{
public:
typedef Config Config_type;
typedef typename Config::String_type String_type;
typedef typename Config::Object_type Object;
typedef typename Config::Array_type Array;
typedef typename String_type::const_pointer Const_str_ptr; // eg const char*
Value_impl(); // creates null value
Value_impl( Const_str_ptr value );
Value_impl( const String_type& value );
Value_impl( const Object& value );
Value_impl( const Array& value );
Value_impl( bool value );
Value_impl( int value );
Value_impl( boost::int64_t value );
Value_impl( boost::uint64_t value );
Value_impl( double value );
Value_impl( const Value_impl& other );
bool operator==( const Value_impl& lhs ) const;
Value_impl& operator=( const Value_impl& lhs );
Value_type type() const;
bool is_uint64() const;
bool is_null() const;
const String_type& get_str() const;
const Object& get_obj() const;
const Array& get_array() const;
bool get_bool() const;
int get_int() const;
boost::int64_t get_int64() const;
boost::uint64_t get_uint64() const;
double get_real() const;
Object& get_obj();
Array& get_array();
template< typename T > T get_value() const; // example usage: int i = value.get_value< int >();
// or double d = value.get_value< double >();
static const Value_impl null;
private:
void check_type( const Value_type vtype ) const;
typedef boost::variant< String_type,
boost::recursive_wrapper< Object >, boost::recursive_wrapper< Array >,
bool, boost::int64_t, double > Variant;
Value_type type_;
Variant v_;
bool is_uint64_;
};
// vector objects
template< class Config >
struct Pair_impl
{
typedef typename Config::String_type String_type;
typedef typename Config::Value_type Value_type;
Pair_impl( const String_type& name, const Value_type& value );
bool operator==( const Pair_impl& lhs ) const;
String_type name_;
Value_type value_;
};
template< class String >
struct Config_vector
{
typedef String String_type;
typedef Value_impl< Config_vector > Value_type;
typedef Pair_impl < Config_vector > Pair_type;
typedef std::vector< Value_type > Array_type;
typedef std::vector< Pair_type > Object_type;
static Value_type& add( Object_type& obj, const String_type& name, const Value_type& value )
{
obj.push_back( Pair_type( name , value ) );
return obj.back().value_;
}
static String_type get_name( const Pair_type& pair )
{
return pair.name_;
}
static Value_type get_value( const Pair_type& pair )
{
return pair.value_;
}
};
// typedefs for ASCII
typedef Config_vector< std::string > Config;
typedef Config::Value_type Value;
typedef Config::Pair_type Pair;
typedef Config::Object_type Object;
typedef Config::Array_type Array;
// typedefs for Unicode
#ifndef BOOST_NO_STD_WSTRING
typedef Config_vector< std::wstring > wConfig;
typedef wConfig::Value_type wValue;
typedef wConfig::Pair_type wPair;
typedef wConfig::Object_type wObject;
typedef wConfig::Array_type wArray;
#endif
// map objects
template< class String >
struct Config_map
{
typedef String String_type;
typedef Value_impl< Config_map > Value_type;
typedef std::vector< Value_type > Array_type;
typedef std::map< String_type, Value_type > Object_type;
typedef typename Object_type::value_type Pair_type;
static Value_type& add( Object_type& obj, const String_type& name, const Value_type& value )
{
return obj[ name ] = value;
}
static String_type get_name( const Pair_type& pair )
{
return pair.first;
}
static Value_type get_value( const Pair_type& pair )
{
return pair.second;
}
};
// typedefs for ASCII
typedef Config_map< std::string > mConfig;
typedef mConfig::Value_type mValue;
typedef mConfig::Object_type mObject;
typedef mConfig::Array_type mArray;
// typedefs for Unicode
#ifndef BOOST_NO_STD_WSTRING
typedef Config_map< std::wstring > wmConfig;
typedef wmConfig::Value_type wmValue;
typedef wmConfig::Object_type wmObject;
typedef wmConfig::Array_type wmArray;
#endif
///////////////////////////////////////////////////////////////////////////////////////////////
//
// implementation
template< class Config >
const Value_impl< Config > Value_impl< Config >::null;
template< class Config >
Value_impl< Config >::Value_impl()
: type_( null_type )
, is_uint64_( false )
{
}
template< class Config >
Value_impl< Config >::Value_impl( const Const_str_ptr value )
: type_( str_type )
, v_( String_type( value ) )
, is_uint64_( false )
{
}
template< class Config >
Value_impl< Config >::Value_impl( const String_type& value )
: type_( str_type )
, v_( value )
, is_uint64_( false )
{
}
template< class Config >
Value_impl< Config >::Value_impl( const Object& value )
: type_( obj_type )
, v_( value )
, is_uint64_( false )
{
}
template< class Config >
Value_impl< Config >::Value_impl( const Array& value )
: type_( array_type )
, v_( value )
, is_uint64_( false )
{
}
template< class Config >
Value_impl< Config >::Value_impl( bool value )
: type_( bool_type )
, v_( value )
, is_uint64_( false )
{
}
template< class Config >
Value_impl< Config >::Value_impl( int value )
: type_( int_type )
, v_( static_cast< boost::int64_t >( value ) )
, is_uint64_( false )
{
}
template< class Config >
Value_impl< Config >::Value_impl( boost::int64_t value )
: type_( int_type )
, v_( value )
, is_uint64_( false )
{
}
template< class Config >
Value_impl< Config >::Value_impl( boost::uint64_t value )
: type_( int_type )
, v_( static_cast< boost::int64_t >( value ) )
, is_uint64_( true )
{
}
template< class Config >
Value_impl< Config >::Value_impl( double value )
: type_( real_type )
, v_( value )
, is_uint64_( false )
{
}
template< class Config >
Value_impl< Config >::Value_impl( const Value_impl< Config >& other )
: type_( other.type() )
, v_( other.v_ )
, is_uint64_( other.is_uint64_ )
{
}
template< class Config >
Value_impl< Config >& Value_impl< Config >::operator=( const Value_impl& lhs )
{
Value_impl tmp( lhs );
std::swap( type_, tmp.type_ );
std::swap( v_, tmp.v_ );
std::swap( is_uint64_, tmp.is_uint64_ );
return *this;
}
template< class Config >
bool Value_impl< Config >::operator==( const Value_impl& lhs ) const
{
if( this == &lhs ) return true;
if( type() != lhs.type() ) return false;
return v_ == lhs.v_;
}
template< class Config >
Value_type Value_impl< Config >::type() const
{
return type_;
}
template< class Config >
bool Value_impl< Config >::is_uint64() const
{
return is_uint64_;
}
template< class Config >
bool Value_impl< Config >::is_null() const
{
return type() == null_type;
}
template< class Config >
void Value_impl< Config >::check_type( const Value_type vtype ) const
{
if( type() != vtype )
{
std::ostringstream os;
os << "value type is " << type() << " not " << vtype;
throw std::runtime_error( os.str() );
}
}
template< class Config >
const typename Config::String_type& Value_impl< Config >::get_str() const
{
check_type( str_type );
return *boost::get< String_type >( &v_ );
}
template< class Config >
const typename Value_impl< Config >::Object& Value_impl< Config >::get_obj() const
{
check_type( obj_type );
return *boost::get< Object >( &v_ );
}
template< class Config >
const typename Value_impl< Config >::Array& Value_impl< Config >::get_array() const
{
check_type( array_type );
return *boost::get< Array >( &v_ );
}
template< class Config >
bool Value_impl< Config >::get_bool() const
{
check_type( bool_type );
return boost::get< bool >( v_ );
}
template< class Config >
int Value_impl< Config >::get_int() const
{
check_type( int_type );
return static_cast< int >( get_int64() );
}
template< class Config >
boost::int64_t Value_impl< Config >::get_int64() const
{
check_type( int_type );
return boost::get< boost::int64_t >( v_ );
}
template< class Config >
boost::uint64_t Value_impl< Config >::get_uint64() const
{
check_type( int_type );
return static_cast< boost::uint64_t >( get_int64() );
}
template< class Config >
double Value_impl< Config >::get_real() const
{
if( type() == int_type )
{
return is_uint64() ? static_cast< double >( get_uint64() )
: static_cast< double >( get_int64() );
}
check_type( real_type );
return boost::get< double >( v_ );
}
template< class Config >
typename Value_impl< Config >::Object& Value_impl< Config >::get_obj()
{
check_type( obj_type );
return *boost::get< Object >( &v_ );
}
template< class Config >
typename Value_impl< Config >::Array& Value_impl< Config >::get_array()
{
check_type( array_type );
return *boost::get< Array >( &v_ );
}
template< class Config >
Pair_impl< Config >::Pair_impl( const String_type& name, const Value_type& value )
: name_( name )
, value_( value )
{
}
template< class Config >
bool Pair_impl< Config >::operator==( const Pair_impl< Config >& lhs ) const
{
if( this == &lhs ) return true;
return ( name_ == lhs.name_ ) && ( value_ == lhs.value_ );
}
// converts a C string, ie. 8 bit char array, to a string object
//
template < class String_type >
String_type to_str( const char* c_str )
{
String_type result;
for( const char* p = c_str; *p != 0; ++p )
{
result += *p;
}
return result;
}
//
namespace internal_
{
template< typename T >
struct Type_to_type
{
};
template< class Value >
int get_value( const Value& value, Type_to_type< int > )
{
return value.get_int();
}
template< class Value >
boost::int64_t get_value( const Value& value, Type_to_type< boost::int64_t > )
{
return value.get_int64();
}
template< class Value >
boost::uint64_t get_value( const Value& value, Type_to_type< boost::uint64_t > )
{
return value.get_uint64();
}
template< class Value >
double get_value( const Value& value, Type_to_type< double > )
{
return value.get_real();
}
template< class Value >
typename Value::String_type get_value( const Value& value, Type_to_type< typename Value::String_type > )
{
return value.get_str();
}
template< class Value >
typename Value::Array get_value( const Value& value, Type_to_type< typename Value::Array > )
{
return value.get_array();
}
template< class Value >
typename Value::Object get_value( const Value& value, Type_to_type< typename Value::Object > )
{
return value.get_obj();
}
template< class Value >
bool get_value( const Value& value, Type_to_type< bool > )
{
return value.get_bool();
}
}
template< class Config >
template< typename T >
T Value_impl< Config >::get_value() const
{
return internal_::get_value( *this, internal_::Type_to_type< T >() );
}
}
#endif

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// Copyright John W. Wilkinson 2007 - 2009.
// Distributed under the MIT License, see accompanying file LICENSE.txt
// json spirit version 4.03
#include "json_spirit_writer.h"
#include "json_spirit_writer_template.h"
void json_spirit::write( const Value& value, std::ostream& os )
{
write_stream( value, os, false );
}
void json_spirit::write_formatted( const Value& value, std::ostream& os )
{
write_stream( value, os, true );
}
std::string json_spirit::write( const Value& value )
{
return write_string( value, false );
}
std::string json_spirit::write_formatted( const Value& value )
{
return write_string( value, true );
}
#ifndef BOOST_NO_STD_WSTRING
void json_spirit::write( const wValue& value, std::wostream& os )
{
write_stream( value, os, false );
}
void json_spirit::write_formatted( const wValue& value, std::wostream& os )
{
write_stream( value, os, true );
}
std::wstring json_spirit::write( const wValue& value )
{
return write_string( value, false );
}
std::wstring json_spirit::write_formatted( const wValue& value )
{
return write_string( value, true );
}
#endif
void json_spirit::write( const mValue& value, std::ostream& os )
{
write_stream( value, os, false );
}
void json_spirit::write_formatted( const mValue& value, std::ostream& os )
{
write_stream( value, os, true );
}
std::string json_spirit::write( const mValue& value )
{
return write_string( value, false );
}
std::string json_spirit::write_formatted( const mValue& value )
{
return write_string( value, true );
}
#ifndef BOOST_NO_STD_WSTRING
void json_spirit::write( const wmValue& value, std::wostream& os )
{
write_stream( value, os, false );
}
void json_spirit::write_formatted( const wmValue& value, std::wostream& os )
{
write_stream( value, os, true );
}
std::wstring json_spirit::write( const wmValue& value )
{
return write_string( value, false );
}
std::wstring json_spirit::write_formatted( const wmValue& value )
{
return write_string( value, true );
}
#endif

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#ifndef JSON_SPIRIT_WRITER
#define JSON_SPIRIT_WRITER
// Copyright John W. Wilkinson 2007 - 2009.
// Distributed under the MIT License, see accompanying file LICENSE.txt
// json spirit version 4.03
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
#include "json_spirit_value.h"
#include <iostream>
namespace json_spirit
{
// functions to convert JSON Values to text,
// the "formatted" versions add whitespace to format the output nicely
void write ( const Value& value, std::ostream& os );
void write_formatted( const Value& value, std::ostream& os );
std::string write ( const Value& value );
std::string write_formatted( const Value& value );
#ifndef BOOST_NO_STD_WSTRING
void write ( const wValue& value, std::wostream& os );
void write_formatted( const wValue& value, std::wostream& os );
std::wstring write ( const wValue& value );
std::wstring write_formatted( const wValue& value );
#endif
void write ( const mValue& value, std::ostream& os );
void write_formatted( const mValue& value, std::ostream& os );
std::string write ( const mValue& value );
std::string write_formatted( const mValue& value );
#ifndef BOOST_NO_STD_WSTRING
void write ( const wmValue& value, std::wostream& os );
void write_formatted( const wmValue& value, std::wostream& os );
std::wstring write ( const wmValue& value );
std::wstring write_formatted( const wmValue& value );
#endif
}
#endif

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#ifndef JSON_SPIRIT_WRITER_TEMPLATE
#define JSON_SPIRIT_WRITER_TEMPLATE
// Copyright John W. Wilkinson 2007 - 2009.
// Distributed under the MIT License, see accompanying file LICENSE.txt
// json spirit version 4.03
#include "json_spirit_value.h"
#include <cassert>
#include <sstream>
#include <iomanip>
namespace json_spirit
{
inline char to_hex_char( unsigned int c )
{
assert( c <= 0xF );
const char ch = static_cast< char >( c );
if( ch < 10 ) return '0' + ch;
return 'A' - 10 + ch;
}
template< class String_type >
String_type non_printable_to_string( unsigned int c )
{
typedef typename String_type::value_type Char_type;
String_type result( 6, '\\' );
result[1] = 'u';
result[ 5 ] = to_hex_char( c & 0x000F ); c >>= 4;
result[ 4 ] = to_hex_char( c & 0x000F ); c >>= 4;
result[ 3 ] = to_hex_char( c & 0x000F ); c >>= 4;
result[ 2 ] = to_hex_char( c & 0x000F );
return result;
}
template< typename Char_type, class String_type >
bool add_esc_char( Char_type c, String_type& s )
{
switch( c )
{
case '"': s += to_str< String_type >( "\\\"" ); return true;
case '\\': s += to_str< String_type >( "\\\\" ); return true;
case '\b': s += to_str< String_type >( "\\b" ); return true;
case '\f': s += to_str< String_type >( "\\f" ); return true;
case '\n': s += to_str< String_type >( "\\n" ); return true;
case '\r': s += to_str< String_type >( "\\r" ); return true;
case '\t': s += to_str< String_type >( "\\t" ); return true;
}
return false;
}
template< class String_type >
String_type add_esc_chars( const String_type& s )
{
typedef typename String_type::const_iterator Iter_type;
typedef typename String_type::value_type Char_type;
String_type result;
const Iter_type end( s.end() );
for( Iter_type i = s.begin(); i != end; ++i )
{
const Char_type c( *i );
if( add_esc_char( c, result ) ) continue;
const wint_t unsigned_c( ( c >= 0 ) ? c : 256 + c );
if( iswprint( unsigned_c ) )
{
result += c;
}
else
{
result += non_printable_to_string< String_type >( unsigned_c );
}
}
return result;
}
// this class generates the JSON text,
// it keeps track of the indentation level etc.
//
template< class Value_type, class Ostream_type >
class Generator
{
typedef typename Value_type::Config_type Config_type;
typedef typename Config_type::String_type String_type;
typedef typename Config_type::Object_type Object_type;
typedef typename Config_type::Array_type Array_type;
typedef typename String_type::value_type Char_type;
typedef typename Object_type::value_type Obj_member_type;
public:
Generator( const Value_type& value, Ostream_type& os, bool pretty )
: os_( os )
, indentation_level_( 0 )
, pretty_( pretty )
{
output( value );
}
private:
void output( const Value_type& value )
{
switch( value.type() )
{
case obj_type: output( value.get_obj() ); break;
case array_type: output( value.get_array() ); break;
case str_type: output( value.get_str() ); break;
case bool_type: output( value.get_bool() ); break;
case int_type: output_int( value ); break;
case real_type: os_ << std::showpoint << std::setprecision( 16 )
<< value.get_real(); break;
case null_type: os_ << "null"; break;
default: assert( false );
}
}
void output( const Object_type& obj )
{
output_array_or_obj( obj, '{', '}' );
}
void output( const Array_type& arr )
{
output_array_or_obj( arr, '[', ']' );
}
void output( const Obj_member_type& member )
{
output( Config_type::get_name( member ) ); space();
os_ << ':'; space();
output( Config_type::get_value( member ) );
}
void output_int( const Value_type& value )
{
if( value.is_uint64() )
{
os_ << value.get_uint64();
}
else
{
os_ << value.get_int64();
}
}
void output( const String_type& s )
{
os_ << '"' << add_esc_chars( s ) << '"';
}
void output( bool b )
{
os_ << to_str< String_type >( b ? "true" : "false" );
}
template< class T >
void output_array_or_obj( const T& t, Char_type start_char, Char_type end_char )
{
os_ << start_char; new_line();
++indentation_level_;
for( typename T::const_iterator i = t.begin(); i != t.end(); ++i )
{
indent(); output( *i );
typename T::const_iterator next = i;
if( ++next != t.end())
{
os_ << ',';
}
new_line();
}
--indentation_level_;
indent(); os_ << end_char;
}
void indent()
{
if( !pretty_ ) return;
for( int i = 0; i < indentation_level_; ++i )
{
os_ << " ";
}
}
void space()
{
if( pretty_ ) os_ << ' ';
}
void new_line()
{
if( pretty_ ) os_ << '\n';
}
Generator& operator=( const Generator& ); // to prevent "assignment operator could not be generated" warning
Ostream_type& os_;
int indentation_level_;
bool pretty_;
};
template< class Value_type, class Ostream_type >
void write_stream( const Value_type& value, Ostream_type& os, bool pretty )
{
Generator< Value_type, Ostream_type >( value, os, pretty );
}
template< class Value_type >
typename Value_type::String_type write_string( const Value_type& value, bool pretty )
{
typedef typename Value_type::String_type::value_type Char_type;
std::basic_ostringstream< Char_type > os;
write_stream( value, os, pretty );
return os.str();
}
}
#endif