:man_page: bson_as_json

bson_as_json()
==============

.. warning::
   .. deprecated:: 1.29.0

      Use :symbol:`bson_as_canonical_extended_json()` and :symbol:`bson_as_relaxed_extended_json()` instead, which use the same `MongoDB Extended JSON format`_ as all other MongoDB drivers.

      To continue producing Legacy Extended JSON, use :symbol:`bson_as_legacy_extended_json()`.

Synopsis
--------

.. code-block:: c

  char *
  bson_as_json (const bson_t *bson, size_t *length);

Parameters
----------

* ``bson``: A :symbol:`bson_t`.
* ``length``: An optional location for the length of the resulting string.

Description
-----------

:symbol:`bson_as_json()` encodes ``bson`` as a UTF-8 string using :doc:`libbson's Legacy Extended JSON <legacy_extended_json>`.

The caller is responsible for freeing the resulting UTF-8 encoded string by calling :symbol:`bson_free()` with the result.

If non-NULL, ``length`` will be set to the length of the result in bytes.

Returns
-------

If successful, a newly allocated UTF-8 encoded string and ``length`` is set.

Upon failure, NULL is returned.

.. only:: html

  .. include:: includes/seealso/bson-as-json.txt

.. _MongoDB Extended JSON format: https://github.com/mongodb/specifications/blob/master/source/extended-json/extended-json.md
