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Function template read_json

boost::property_tree::json_parser::read_json

Synopsis

// In header: <boost/property_tree/json_parser.hpp>


template<typename Ptree> 
  void read_json(const std::string & filename, Ptree & pt, 
                 const std::locale & loc = std::locale());

Description

Read JSON from a the given file and translate it to a property tree.

Parameters:

filename

Name of file from which to read in the property tree.

loc

The locale to use when reading in the file contents.

pt

The property tree to populate.

Throws:

json_parser_error

Notes:

Clears existing contents of property tree. In case of error the property tree unmodified.

<simplesectsep></simplesectsep>

Items of JSON arrays are translated into ptree keys with empty names. Members of objects are translated into named keys.

<simplesectsep></simplesectsep>

JSON data can be a string, a numeric value, or one of literals "null", "true" and "false". During parse, any of the above is copied verbatim into ptree data string.


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