char *

       MongoDB, Inc

       2009-present, MongoDB, Inc.

1.30.4                                            Jun 08, 2025                   BSON_AS_LEGACY_EXTENDED_JSON(3)

bson_as_legacy_extended_json() encodes bson as a UTF-8 string using libbson'sLegacyExtendedJSON.  This
       function  is  superseded  by bson_as_canonical_extended_json() and bson_as_relaxed_extended_json(), which
       use the same MongoDBExtendedJSONformat as all other MongoDB drivers.

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

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

          bson_t *b = BCON_NEW ("foo", BCON_INT32 (123));
          char *str = bson_as_legacy_extended_json (b, NULL);
          printf ("Legacy Extended JSON: %s\n", str);
          // Prints:
          // Legacy Extended JSON: { "foo" : 123 }
          bson_free (str);
          bson_destroy (b);

       • bson: A bson_t.

       • length: An optional location for the length of the resulting string.

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

       Upon failure, NULL is returned.

          char *
          bson_as_legacy_extended_json (const bson_t *bson, size_t *length)